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Comparing libev/ev.c (file contents):
Revision 1.134 by root, Fri Nov 23 19:13:33 2007 UTC vs.
Revision 1.184 by root, Wed Dec 12 05:30:52 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	if (expect_false (!w_->cb))
403	return;
404
405	w_->pending = ++pendingcnt [ABSPRI (w_)];
406	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
407	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
408	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
409	}
410
411	static void
412	queue_events (EV_P_ W *events, int eventcnt, int type)
413	{
414	int i;
415
416	for (i = 0; i < eventcnt; ++i)
417	ev_feed_event (EV_A_ events [i], type);
418	}
419
420	inline void
421	fd_event (EV_P_ int fd, int revents)	506	fd_event (EV_P_ int fd, int revents)
422	{	507	{
423	ANFD *anfd = anfds + fd;	508	ANFD *anfd = anfds + fd;
424	struct ev_io *w;	509	ev_io *w;
425		510
426	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)
427	{	512	{
428	int ev = w->events & revents;	513	int ev = w->events & revents;
429		514
430	if (ev)	515	if (ev)
431	ev_feed_event (EV_A_ (W)w, ev);	516	ev_feed_event (EV_A_ (W)w, ev);
…		…
433	}	518	}
434		519
435	void	520	void
436	ev_feed_fd_event (EV_P_ int fd, int revents)	521	ev_feed_fd_event (EV_P_ int fd, int revents)
437	{	522	{
		523	if (fd >= 0 && fd < anfdmax)
438	fd_event (EV_A_ fd, revents);	524	fd_event (EV_A_ fd, revents);
439	}	525	}
440		526
441	/*****************************************************************************/	527	void inline_size
442
443	inline void
444	fd_reify (EV_P)	528	fd_reify (EV_P)
445	{	529	{
446	int i;	530	int i;
447		531
448	for (i = 0; i < fdchangecnt; ++i)	532	for (i = 0; i < fdchangecnt; ++i)
449	{	533	{
450	int fd = fdchanges [i];	534	int fd = fdchanges [i];
451	ANFD *anfd = anfds + fd;	535	ANFD *anfd = anfds + fd;
452	struct ev_io *w;	536	ev_io *w;
453		537
454	int events = 0;	538	unsigned char events = 0;
455		539
456	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)
457	events |= w->events;	541	events |= (unsigned char)w->events;
458		542
459	#if EV_SELECT_IS_WINSOCKET	543	#if EV_SELECT_IS_WINSOCKET
460	if (events)	544	if (events)
461	{	545	{
462	unsigned long argp;	546	unsigned long argp;
463	anfd->handle = _get_osfhandle (fd);	547	anfd->handle = _get_osfhandle (fd);
464	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	548	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
465	}	549	}
466	#endif	550	#endif
467		551
		552	{
		553	unsigned char o_events = anfd->events;
		554	unsigned char o_reify = anfd->reify;
		555
468	anfd->reify = 0;	556	anfd->reify = 0;
469
470	backend_modify (EV_A_ fd, anfd->events, events);
471	anfd->events = events;	557	anfd->events = events;
		558
		559	if (o_events != events || o_reify & EV_IOFDSET)
		560	backend_modify (EV_A_ fd, o_events, events);
		561	}
472	}	562	}
473		563
474	fdchangecnt = 0;	564	fdchangecnt = 0;
475	}	565	}
476		566
477	static void	567	void inline_size
478	fd_change (EV_P_ int fd)	568	fd_change (EV_P_ int fd, int flags)
479	{	569	{
480	if (expect_false (anfds [fd].reify))	570	unsigned char reify = anfds [fd].reify;
481	return;
482
483	anfds [fd].reify = 1;	571	anfds [fd].reify |= flags;
484		572
		573	if (expect_true (!reify))
		574	{
485	++fdchangecnt;	575	++fdchangecnt;
486	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	576	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
487	fdchanges [fdchangecnt - 1] = fd;	577	fdchanges [fdchangecnt - 1] = fd;
		578	}
488	}	579	}
489		580
490	static void	581	void inline_speed
491	fd_kill (EV_P_ int fd)	582	fd_kill (EV_P_ int fd)
492	{	583	{
493	struct ev_io *w;	584	ev_io *w;
494		585
495	while ((w = (struct ev_io *)anfds [fd].head))	586	while ((w = (ev_io *)anfds [fd].head))
496	{	587	{
497	ev_io_stop (EV_A_ w);	588	ev_io_stop (EV_A_ w);
498	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	589	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
499	}	590	}
500	}	591	}
501		592
502	inline int	593	int inline_size
503	fd_valid (int fd)	594	fd_valid (int fd)
504	{	595	{
505	#ifdef _WIN32	596	#ifdef _WIN32
506	return _get_osfhandle (fd) != -1;	597	return _get_osfhandle (fd) != -1;
507	#else	598	#else
508	return fcntl (fd, F_GETFD) != -1;	599	return fcntl (fd, F_GETFD) != -1;
509	#endif	600	#endif
510	}	601	}
511		602
512	/* called on EBADF to verify fds */	603	/* called on EBADF to verify fds */
513	static void	604	static void noinline
514	fd_ebadf (EV_P)	605	fd_ebadf (EV_P)
515	{	606	{
516	int fd;	607	int fd;
517		608
518	for (fd = 0; fd < anfdmax; ++fd)	609	for (fd = 0; fd < anfdmax; ++fd)
…		…
520	if (!fd_valid (fd) == -1 && errno == EBADF)	611	if (!fd_valid (fd) == -1 && errno == EBADF)
521	fd_kill (EV_A_ fd);	612	fd_kill (EV_A_ fd);
522	}	613	}
523		614
524	/* called on ENOMEM in select/poll to kill some fds and retry */	615	/* called on ENOMEM in select/poll to kill some fds and retry */
525	static void	616	static void noinline
526	fd_enomem (EV_P)	617	fd_enomem (EV_P)
527	{	618	{
528	int fd;	619	int fd;
529		620
530	for (fd = anfdmax; fd--; )	621	for (fd = anfdmax; fd--; )
…		…
534	return;	625	return;
535	}	626	}
536	}	627	}
537		628
538	/* usually called after fork if backend needs to re-arm all fds from scratch */	629	/* usually called after fork if backend needs to re-arm all fds from scratch */
539	static void	630	static void noinline
540	fd_rearm_all (EV_P)	631	fd_rearm_all (EV_P)
541	{	632	{
542	int fd;	633	int fd;
543		634
544	/* this should be highly optimised to not do anything but set a flag */
545	for (fd = 0; fd < anfdmax; ++fd)	635	for (fd = 0; fd < anfdmax; ++fd)
546	if (anfds [fd].events)	636	if (anfds [fd].events)
547	{	637	{
548	anfds [fd].events = 0;	638	anfds [fd].events = 0;
549	fd_change (EV_A_ fd);	639	fd_change (EV_A_ fd, EV_IOFDSET | 1);
550	}	640	}
551	}	641	}
552		642
553	/*****************************************************************************/	643	/*****************************************************************************/
554		644
555	static void	645	void inline_speed
556	upheap (WT *heap, int k)	646	upheap (WT *heap, int k)
557	{	647	{
558	WT w = heap [k];	648	WT w = heap [k];
559		649
560	while (k && heap [k >> 1]->at > w->at)	650	while (k)
561	{	651	{
		652	int p = (k - 1) >> 1;
		653
		654	if (heap [p]->at <= w->at)
		655	break;
		656
562	heap [k] = heap [k >> 1];	657	heap [k] = heap [p];
563	((W)heap [k])->active = k + 1;	658	((W)heap [k])->active = k + 1;
564	k >>= 1;	659	k = p;
565	}	660	}
566		661
567	heap [k] = w;	662	heap [k] = w;
568	((W)heap [k])->active = k + 1;	663	((W)heap [k])->active = k + 1;
569
570	}	664	}
571		665
572	static void	666	void inline_speed
573	downheap (WT *heap, int N, int k)	667	downheap (WT *heap, int N, int k)
574	{	668	{
575	WT w = heap [k];	669	WT w = heap [k];
576		670
577	while (k < (N >> 1))	671	for (;;)
578	{	672	{
579	int j = k << 1;	673	int c = (k << 1) + 1;
580		674
581	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	675	if (c >= N)
582	++j;
583
584	if (w->at <= heap [j]->at)
585	break;	676	break;
586		677
		678	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		679	? 1 : 0;
		680
		681	if (w->at <= heap [c]->at)
		682	break;
		683
587	heap [k] = heap [j];	684	heap [k] = heap [c];
588	((W)heap [k])->active = k + 1;	685	((W)heap [k])->active = k + 1;
		686
589	k = j;	687	k = c;
590	}	688	}
591		689
592	heap [k] = w;	690	heap [k] = w;
593	((W)heap [k])->active = k + 1;	691	((W)heap [k])->active = k + 1;
594	}	692	}
595		693
596	inline void	694	void inline_size
597	adjustheap (WT *heap, int N, int k)	695	adjustheap (WT *heap, int N, int k)
598	{	696	{
599	upheap (heap, k);	697	upheap (heap, k);
600	downheap (heap, N, k);	698	downheap (heap, N, k);
601	}	699	}
…		…
611	static ANSIG *signals;	709	static ANSIG *signals;
612	static int signalmax;	710	static int signalmax;
613		711
614	static int sigpipe [2];	712	static int sigpipe [2];
615	static sig_atomic_t volatile gotsig;	713	static sig_atomic_t volatile gotsig;
616	static struct ev_io sigev;	714	static ev_io sigev;
617		715
618	static void	716	void inline_size
619	signals_init (ANSIG *base, int count)	717	signals_init (ANSIG *base, int count)
620	{	718	{
621	while (count--)	719	while (count--)
622	{	720	{
623	base->head = 0;	721	base->head = 0;
…		…
643	write (sigpipe [1], &signum, 1);	741	write (sigpipe [1], &signum, 1);
644	errno = old_errno;	742	errno = old_errno;
645	}	743	}
646	}	744	}
647		745
648	void	746	void noinline
649	ev_feed_signal_event (EV_P_ int signum)	747	ev_feed_signal_event (EV_P_ int signum)
650	{	748	{
651	WL w;	749	WL w;
652		750
653	#if EV_MULTIPLICITY	751	#if EV_MULTIPLICITY
…		…
664	for (w = signals [signum].head; w; w = w->next)	762	for (w = signals [signum].head; w; w = w->next)
665	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	763	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
666	}	764	}
667		765
668	static void	766	static void
669	sigcb (EV_P_ struct ev_io *iow, int revents)	767	sigcb (EV_P_ ev_io *iow, int revents)
670	{	768	{
671	int signum;	769	int signum;
672		770
673	read (sigpipe [0], &revents, 1);	771	read (sigpipe [0], &revents, 1);
674	gotsig = 0;	772	gotsig = 0;
…		…
676	for (signum = signalmax; signum--; )	774	for (signum = signalmax; signum--; )
677	if (signals [signum].gotsig)	775	if (signals [signum].gotsig)
678	ev_feed_signal_event (EV_A_ signum + 1);	776	ev_feed_signal_event (EV_A_ signum + 1);
679	}	777	}
680		778
681	static void	779	void inline_speed
682	fd_intern (int fd)	780	fd_intern (int fd)
683	{	781	{
684	#ifdef _WIN32	782	#ifdef _WIN32
685	int arg = 1;	783	int arg = 1;
686	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	784	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
688	fcntl (fd, F_SETFD, FD_CLOEXEC);	786	fcntl (fd, F_SETFD, FD_CLOEXEC);
689	fcntl (fd, F_SETFL, O_NONBLOCK);	787	fcntl (fd, F_SETFL, O_NONBLOCK);
690	#endif	788	#endif
691	}	789	}
692		790
693	static void	791	static void noinline
694	siginit (EV_P)	792	siginit (EV_P)
695	{	793	{
696	fd_intern (sigpipe [0]);	794	fd_intern (sigpipe [0]);
697	fd_intern (sigpipe [1]);	795	fd_intern (sigpipe [1]);
698		796
…		…
701	ev_unref (EV_A); /* child watcher should not keep loop alive */	799	ev_unref (EV_A); /* child watcher should not keep loop alive */
702	}	800	}
703		801
704	/*****************************************************************************/	802	/*****************************************************************************/
705		803
706	static struct ev_child *childs [PID_HASHSIZE];	804	static WL childs [EV_PID_HASHSIZE];
707		805
708	#ifndef _WIN32	806	#ifndef _WIN32
709		807
710	static struct ev_signal childev;	808	static ev_signal childev;
		809
		810	void inline_speed
		811	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		812	{
		813	ev_child *w;
		814
		815	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		816	if (w->pid == pid || !w->pid)
		817	{
		818	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		819	w->rpid = pid;
		820	w->rstatus = status;
		821	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		822	}
		823	}
711		824
712	#ifndef WCONTINUED	825	#ifndef WCONTINUED
713	# define WCONTINUED 0	826	# define WCONTINUED 0
714	#endif	827	#endif
715		828
716	static void	829	static void
717	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
718	{
719	struct ev_child *w;
720
721	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
722	if (w->pid == pid || !w->pid)
723	{
724	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
725	w->rpid = pid;
726	w->rstatus = status;
727	ev_feed_event (EV_A_ (W)w, EV_CHILD);
728	}
729	}
730
731	static void
732	childcb (EV_P_ struct ev_signal *sw, int revents)	830	childcb (EV_P_ ev_signal *sw, int revents)
733	{	831	{
734	int pid, status;	832	int pid, status;
735		833
		834	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
736	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	835	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
737	{	836	if (!WCONTINUED
		837	|| errno != EINVAL
		838	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		839	return;
		840
738	/* make sure we are called again until all childs have been reaped */	841	/* make sure we are called again until all childs have been reaped */
739	/* we need to do it this way so that the callback gets called before we continue */	842	/* we need to do it this way so that the callback gets called before we continue */
740	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	843	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
741		844
742	child_reap (EV_A_ sw, pid, pid, status);	845	child_reap (EV_A_ sw, pid, pid, status);
		846	if (EV_PID_HASHSIZE > 1)
743	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	847	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
744	}
745	}	848	}
746		849
747	#endif	850	#endif
748		851
749	/*****************************************************************************/	852	/*****************************************************************************/
…		…
775	{	878	{
776	return EV_VERSION_MINOR;	879	return EV_VERSION_MINOR;
777	}	880	}
778		881
779	/* return true if we are running with elevated privileges and should ignore env variables */	882	/* return true if we are running with elevated privileges and should ignore env variables */
780	static int	883	int inline_size
781	enable_secure (void)	884	enable_secure (void)
782	{	885	{
783	#ifdef _WIN32	886	#ifdef _WIN32
784	return 0;	887	return 0;
785	#else	888	#else
…		…
832	ev_backend (EV_P)	935	ev_backend (EV_P)
833	{	936	{
834	return backend;	937	return backend;
835	}	938	}
836		939
837	static void	940	unsigned int
		941	ev_loop_count (EV_P)
		942	{
		943	return loop_count;
		944	}
		945
		946	static void noinline
838	loop_init (EV_P_ unsigned int flags)	947	loop_init (EV_P_ unsigned int flags)
839	{	948	{
840	if (!backend)	949	if (!backend)
841	{	950	{
842	#if EV_USE_MONOTONIC	951	#if EV_USE_MONOTONIC
…		…
850	ev_rt_now = ev_time ();	959	ev_rt_now = ev_time ();
851	mn_now = get_clock ();	960	mn_now = get_clock ();
852	now_floor = mn_now;	961	now_floor = mn_now;
853	rtmn_diff = ev_rt_now - mn_now;	962	rtmn_diff = ev_rt_now - mn_now;
854		963
		964	/* pid check not overridable via env */
		965	#ifndef _WIN32
		966	if (flags & EVFLAG_FORKCHECK)
		967	curpid = getpid ();
		968	#endif
		969
855	if (!(flags & EVFLAG_NOENV)	970	if (!(flags & EVFLAG_NOENV)
856	&& !enable_secure ()	971	&& !enable_secure ()
857	&& getenv ("LIBEV_FLAGS"))	972	&& getenv ("LIBEV_FLAGS"))
858	flags = atoi (getenv ("LIBEV_FLAGS"));	973	flags = atoi (getenv ("LIBEV_FLAGS"));
859		974
860	if (!(flags & 0x0000ffffUL))	975	if (!(flags & 0x0000ffffUL))
861	flags |= ev_recommended_backends ();	976	flags |= ev_recommended_backends ();
862		977
863	backend = 0;	978	backend = 0;
		979	backend_fd = -1;
		980	#if EV_USE_INOTIFY
		981	fs_fd = -2;
		982	#endif
		983
864	#if EV_USE_PORT	984	#if EV_USE_PORT
865	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	985	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
866	#endif	986	#endif
867	#if EV_USE_KQUEUE	987	#if EV_USE_KQUEUE
868	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	988	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
880	ev_init (&sigev, sigcb);	1000	ev_init (&sigev, sigcb);
881	ev_set_priority (&sigev, EV_MAXPRI);	1001	ev_set_priority (&sigev, EV_MAXPRI);
882	}	1002	}
883	}	1003	}
884		1004
885	static void	1005	static void noinline
886	loop_destroy (EV_P)	1006	loop_destroy (EV_P)
887	{	1007	{
888	int i;	1008	int i;
		1009
		1010	#if EV_USE_INOTIFY
		1011	if (fs_fd >= 0)
		1012	close (fs_fd);
		1013	#endif
		1014
		1015	if (backend_fd >= 0)
		1016	close (backend_fd);
889		1017
890	#if EV_USE_PORT	1018	#if EV_USE_PORT
891	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1019	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
892	#endif	1020	#endif
893	#if EV_USE_KQUEUE	1021	#if EV_USE_KQUEUE
…		…
902	#if EV_USE_SELECT	1030	#if EV_USE_SELECT
903	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1031	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
904	#endif	1032	#endif
905		1033
906	for (i = NUMPRI; i--; )	1034	for (i = NUMPRI; i--; )
		1035	{
907	array_free (pending, [i]);	1036	array_free (pending, [i]);
		1037	#if EV_IDLE_ENABLE
		1038	array_free (idle, [i]);
		1039	#endif
		1040	}
908		1041
909	/* have to use the microsoft-never-gets-it-right macro */	1042	/* have to use the microsoft-never-gets-it-right macro */
910	array_free (fdchange, EMPTY0);	1043	array_free (fdchange, EMPTY);
911	array_free (timer, EMPTY0);	1044	array_free (timer, EMPTY);
912	#if EV_PERIODICS	1045	#if EV_PERIODIC_ENABLE
913	array_free (periodic, EMPTY0);	1046	array_free (periodic, EMPTY);
914	#endif	1047	#endif
915	array_free (idle, EMPTY0);
916	array_free (prepare, EMPTY0);	1048	array_free (prepare, EMPTY);
917	array_free (check, EMPTY0);	1049	array_free (check, EMPTY);
918		1050
919	backend = 0;	1051	backend = 0;
920	}	1052	}
921		1053
922	static void	1054	void inline_size infy_fork (EV_P);
		1055
		1056	void inline_size
923	loop_fork (EV_P)	1057	loop_fork (EV_P)
924	{	1058	{
925	#if EV_USE_PORT	1059	#if EV_USE_PORT
926	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1060	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
927	#endif	1061	#endif
928	#if EV_USE_KQUEUE	1062	#if EV_USE_KQUEUE
929	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1063	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
930	#endif	1064	#endif
931	#if EV_USE_EPOLL	1065	#if EV_USE_EPOLL
932	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1066	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1067	#endif
		1068	#if EV_USE_INOTIFY
		1069	infy_fork (EV_A);
933	#endif	1070	#endif
934		1071
935	if (ev_is_active (&sigev))	1072	if (ev_is_active (&sigev))
936	{	1073	{
937	/* default loop */	1074	/* default loop */
…		…
1053	postfork = 1;	1190	postfork = 1;
1054	}	1191	}
1055		1192
1056	/*****************************************************************************/	1193	/*****************************************************************************/
1057		1194
1058	static int	1195	void
1059	any_pending (EV_P)	1196	ev_invoke (EV_P_ void *w, int revents)
1060	{	1197	{
1061	int pri;	1198	EV_CB_INVOKE ((W)w, revents);
1062
1063	for (pri = NUMPRI; pri--; )
1064	if (pendingcnt [pri])
1065	return 1;
1066
1067	return 0;
1068	}	1199	}
1069		1200
1070	inline void	1201	void inline_speed
1071	call_pending (EV_P)	1202	call_pending (EV_P)
1072	{	1203	{
1073	int pri;	1204	int pri;
1074		1205
1075	for (pri = NUMPRI; pri--; )	1206	for (pri = NUMPRI; pri--; )
…		…
1077	{	1208	{
1078	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1209	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1079		1210
1080	if (expect_true (p->w))	1211	if (expect_true (p->w))
1081	{	1212	{
		1213	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1214
1082	p->w->pending = 0;	1215	p->w->pending = 0;
1083	EV_CB_INVOKE (p->w, p->events);	1216	EV_CB_INVOKE (p->w, p->events);
1084	}	1217	}
1085	}	1218	}
1086	}	1219	}
1087		1220
1088	inline void	1221	void inline_size
1089	timers_reify (EV_P)	1222	timers_reify (EV_P)
1090	{	1223	{
1091	while (timercnt && ((WT)timers [0])->at <= mn_now)	1224	while (timercnt && ((WT)timers [0])->at <= mn_now)
1092	{	1225	{
1093	struct ev_timer *w = timers [0];	1226	ev_timer *w = (ev_timer *)timers [0];
1094		1227
1095	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1228	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1096		1229
1097	/* first reschedule or stop timer */	1230	/* first reschedule or stop timer */
1098	if (w->repeat)	1231	if (w->repeat)
1099	{	1232	{
1100	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1233	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1101		1234
1102	((WT)w)->at += w->repeat;	1235	((WT)w)->at += w->repeat;
1103	if (((WT)w)->at < mn_now)	1236	if (((WT)w)->at < mn_now)
1104	((WT)w)->at = mn_now;	1237	((WT)w)->at = mn_now;
1105		1238
1106	downheap ((WT *)timers, timercnt, 0);	1239	downheap (timers, timercnt, 0);
1107	}	1240	}
1108	else	1241	else
1109	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1242	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1110		1243
1111	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1244	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1112	}	1245	}
1113	}	1246	}
1114		1247
1115	#if EV_PERIODICS	1248	#if EV_PERIODIC_ENABLE
1116	inline void	1249	void inline_size
1117	periodics_reify (EV_P)	1250	periodics_reify (EV_P)
1118	{	1251	{
1119	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1252	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1120	{	1253	{
1121	struct ev_periodic *w = periodics [0];	1254	ev_periodic *w = (ev_periodic *)periodics [0];
1122		1255
1123	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1256	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1124		1257
1125	/* first reschedule or stop timer */	1258	/* first reschedule or stop timer */
1126	if (w->reschedule_cb)	1259	if (w->reschedule_cb)
1127	{	1260	{
1128	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1261	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1129	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1262	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1130	downheap ((WT *)periodics, periodiccnt, 0);	1263	downheap (periodics, periodiccnt, 0);
1131	}	1264	}
1132	else if (w->interval)	1265	else if (w->interval)
1133	{	1266	{
1134	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1267	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1268	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1135	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1269	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1136	downheap ((WT *)periodics, periodiccnt, 0);	1270	downheap (periodics, periodiccnt, 0);
1137	}	1271	}
1138	else	1272	else
1139	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1273	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1140		1274
1141	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1275	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1142	}	1276	}
1143	}	1277	}
1144		1278
1145	static void	1279	static void noinline
1146	periodics_reschedule (EV_P)	1280	periodics_reschedule (EV_P)
1147	{	1281	{
1148	int i;	1282	int i;
1149		1283
1150	/* adjust periodics after time jump */	1284	/* adjust periodics after time jump */
1151	for (i = 0; i < periodiccnt; ++i)	1285	for (i = 0; i < periodiccnt; ++i)
1152	{	1286	{
1153	struct ev_periodic *w = periodics [i];	1287	ev_periodic *w = (ev_periodic *)periodics [i];
1154		1288
1155	if (w->reschedule_cb)	1289	if (w->reschedule_cb)
1156	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1290	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1157	else if (w->interval)	1291	else if (w->interval)
1158	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1292	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1159	}	1293	}
1160		1294
1161	/* now rebuild the heap */	1295	/* now rebuild the heap */
1162	for (i = periodiccnt >> 1; i--; )	1296	for (i = periodiccnt >> 1; i--; )
1163	downheap ((WT *)periodics, periodiccnt, i);	1297	downheap (periodics, periodiccnt, i);
1164	}	1298	}
1165	#endif	1299	#endif
1166		1300
1167	inline int	1301	#if EV_IDLE_ENABLE
1168	time_update_monotonic (EV_P)	1302	void inline_size
		1303	idle_reify (EV_P)
1169	{	1304	{
		1305	if (expect_false (idleall))
		1306	{
		1307	int pri;
		1308
		1309	for (pri = NUMPRI; pri--; )
		1310	{
		1311	if (pendingcnt [pri])
		1312	break;
		1313
		1314	if (idlecnt [pri])
		1315	{
		1316	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1317	break;
		1318	}
		1319	}
		1320	}
		1321	}
		1322	#endif
		1323
		1324	void inline_speed
		1325	time_update (EV_P_ ev_tstamp max_block)
		1326	{
		1327	int i;
		1328
		1329	#if EV_USE_MONOTONIC
		1330	if (expect_true (have_monotonic))
		1331	{
		1332	ev_tstamp odiff = rtmn_diff;
		1333
1170	mn_now = get_clock ();	1334	mn_now = get_clock ();
1171		1335
		1336	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1337	/* interpolate in the meantime */
1172	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1338	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1173	{	1339	{
1174	ev_rt_now = rtmn_diff + mn_now;	1340	ev_rt_now = rtmn_diff + mn_now;
1175	return 0;	1341	return;
1176	}	1342	}
1177	else	1343
1178	{
1179	now_floor = mn_now;	1344	now_floor = mn_now;
1180	ev_rt_now = ev_time ();	1345	ev_rt_now = ev_time ();
1181	return 1;
1182	}
1183	}
1184		1346
1185	inline void	1347	/* loop a few times, before making important decisions.
1186	time_update (EV_P)	1348	* on the choice of "4": one iteration isn't enough,
1187	{	1349	* in case we get preempted during the calls to
1188	int i;	1350	* ev_time and get_clock. a second call is almost guaranteed
1189		1351	* to succeed in that case, though. and looping a few more times
1190	#if EV_USE_MONOTONIC	1352	* doesn't hurt either as we only do this on time-jumps or
1191	if (expect_true (have_monotonic))	1353	* in the unlikely event of having been preempted here.
1192	{	1354	*/
1193	if (time_update_monotonic (EV_A))	1355	for (i = 4; --i; )
1194	{	1356	{
1195	ev_tstamp odiff = rtmn_diff;
1196
1197	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1198	{
1199	rtmn_diff = ev_rt_now - mn_now;	1357	rtmn_diff = ev_rt_now - mn_now;
1200		1358
1201	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1359	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1202	return; /* all is well */	1360	return; /* all is well */
1203		1361
1204	ev_rt_now = ev_time ();	1362	ev_rt_now = ev_time ();
1205	mn_now = get_clock ();	1363	mn_now = get_clock ();
1206	now_floor = mn_now;	1364	now_floor = mn_now;
1207	}	1365	}
1208		1366
1209	# if EV_PERIODICS	1367	# if EV_PERIODIC_ENABLE
		1368	periodics_reschedule (EV_A);
		1369	# endif
		1370	/* no timer adjustment, as the monotonic clock doesn't jump */
		1371	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1372	}
		1373	else
		1374	#endif
		1375	{
		1376	ev_rt_now = ev_time ();
		1377
		1378	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1379	{
		1380	#if EV_PERIODIC_ENABLE
1210	periodics_reschedule (EV_A);	1381	periodics_reschedule (EV_A);
1211	# endif	1382	#endif
1212	/* no timer adjustment, as the monotonic clock doesn't jump */
1213	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1214	}
1215	}
1216	else
1217	#endif
1218	{
1219	ev_rt_now = ev_time ();
1220
1221	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1222	{
1223	#if EV_PERIODICS
1224	periodics_reschedule (EV_A);
1225	#endif
1226
1227	/* adjust timers. this is easy, as the offset is the same for all */	1383	/* adjust timers. this is easy, as the offset is the same for all of them */
1228	for (i = 0; i < timercnt; ++i)	1384	for (i = 0; i < timercnt; ++i)
1229	((WT)timers [i])->at += ev_rt_now - mn_now;	1385	((WT)timers [i])->at += ev_rt_now - mn_now;
1230	}	1386	}
1231		1387
1232	mn_now = ev_rt_now;	1388	mn_now = ev_rt_now;
…		…
1248	static int loop_done;	1404	static int loop_done;
1249		1405
1250	void	1406	void
1251	ev_loop (EV_P_ int flags)	1407	ev_loop (EV_P_ int flags)
1252	{	1408	{
1253	double block;
1254	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1409	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1410	? EVUNLOOP_ONE
		1411	: EVUNLOOP_CANCEL;
1255		1412
1256	while (activecnt)	1413	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1414
		1415	do
1257	{	1416	{
		1417	#ifndef _WIN32
		1418	if (expect_false (curpid)) /* penalise the forking check even more */
		1419	if (expect_false (getpid () != curpid))
		1420	{
		1421	curpid = getpid ();
		1422	postfork = 1;
		1423	}
		1424	#endif
		1425
		1426	#if EV_FORK_ENABLE
		1427	/* we might have forked, so queue fork handlers */
		1428	if (expect_false (postfork))
		1429	if (forkcnt)
		1430	{
		1431	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1432	call_pending (EV_A);
		1433	}
		1434	#endif
		1435
1258	/* queue check watchers (and execute them) */	1436	/* queue prepare watchers (and execute them) */
1259	if (expect_false (preparecnt))	1437	if (expect_false (preparecnt))
1260	{	1438	{
1261	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1439	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1262	call_pending (EV_A);	1440	call_pending (EV_A);
1263	}	1441	}
1264		1442
		1443	if (expect_false (!activecnt))
		1444	break;
		1445
1265	/* we might have forked, so reify kernel state if necessary */	1446	/* we might have forked, so reify kernel state if necessary */
1266	if (expect_false (postfork))	1447	if (expect_false (postfork))
1267	loop_fork (EV_A);	1448	loop_fork (EV_A);
1268		1449
1269	/* update fd-related kernel structures */	1450	/* update fd-related kernel structures */
1270	fd_reify (EV_A);	1451	fd_reify (EV_A);
1271		1452
1272	/* calculate blocking time */	1453	/* calculate blocking time */
		1454	{
		1455	ev_tstamp block;
1273		1456
1274	/* we only need this for !monotonic clock or timers, but as we basically	1457	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1275	always have timers, we just calculate it always */	1458	block = 0.; /* do not block at all */
1276	#if EV_USE_MONOTONIC
1277	if (expect_true (have_monotonic))
1278	time_update_monotonic (EV_A);
1279	else	1459	else
1280	#endif
1281	{	1460	{
1282	ev_rt_now = ev_time ();	1461	/* update time to cancel out callback processing overhead */
1283	mn_now = ev_rt_now;	1462	time_update (EV_A_ 1e100);
1284	}
1285		1463
1286	if (flags & EVLOOP_NONBLOCK || idlecnt)
1287	block = 0.;
1288	else
1289	{
1290	block = MAX_BLOCKTIME;	1464	block = MAX_BLOCKTIME;
1291		1465
1292	if (timercnt)	1466	if (timercnt)
1293	{	1467	{
1294	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1468	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1295	if (block > to) block = to;	1469	if (block > to) block = to;
1296	}	1470	}
1297		1471
1298	#if EV_PERIODICS	1472	#if EV_PERIODIC_ENABLE
1299	if (periodiccnt)	1473	if (periodiccnt)
1300	{	1474	{
1301	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1475	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1302	if (block > to) block = to;	1476	if (block > to) block = to;
1303	}	1477	}
1304	#endif	1478	#endif
1305		1479
1306	if (expect_false (block < 0.)) block = 0.;	1480	if (expect_false (block < 0.)) block = 0.;
1307	}	1481	}
1308		1482
		1483	++loop_count;
1309	backend_poll (EV_A_ block);	1484	backend_poll (EV_A_ block);
1310		1485
1311	/* update ev_rt_now, do magic */	1486	/* update ev_rt_now, do magic */
1312	time_update (EV_A);	1487	time_update (EV_A_ block);
		1488	}
1313		1489
1314	/* queue pending timers and reschedule them */	1490	/* queue pending timers and reschedule them */
1315	timers_reify (EV_A); /* relative timers called last */	1491	timers_reify (EV_A); /* relative timers called last */
1316	#if EV_PERIODICS	1492	#if EV_PERIODIC_ENABLE
1317	periodics_reify (EV_A); /* absolute timers called first */	1493	periodics_reify (EV_A); /* absolute timers called first */
1318	#endif	1494	#endif
1319		1495
		1496	#if EV_IDLE_ENABLE
1320	/* queue idle watchers unless io or timers are pending */	1497	/* queue idle watchers unless other events are pending */
1321	if (idlecnt && !any_pending (EV_A))	1498	idle_reify (EV_A);
1322	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1499	#endif
1323		1500
1324	/* queue check watchers, to be executed first */	1501	/* queue check watchers, to be executed first */
1325	if (expect_false (checkcnt))	1502	if (expect_false (checkcnt))
1326	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1503	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1327		1504
1328	call_pending (EV_A);	1505	call_pending (EV_A);
1329		1506
1330	if (expect_false (loop_done))
1331	break;
1332	}	1507	}
		1508	while (expect_true (activecnt && !loop_done));
1333		1509
1334	if (loop_done != 2)	1510	if (loop_done == EVUNLOOP_ONE)
1335	loop_done = 0;	1511	loop_done = EVUNLOOP_CANCEL;
1336	}	1512	}
1337		1513
1338	void	1514	void
1339	ev_unloop (EV_P_ int how)	1515	ev_unloop (EV_P_ int how)
1340	{	1516	{
1341	loop_done = how;	1517	loop_done = how;
1342	}	1518	}
1343		1519
1344	/*****************************************************************************/	1520	/*****************************************************************************/
1345		1521
1346	inline void	1522	void inline_size
1347	wlist_add (WL *head, WL elem)	1523	wlist_add (WL *head, WL elem)
1348	{	1524	{
1349	elem->next = *head;	1525	elem->next = *head;
1350	*head = elem;	1526	*head = elem;
1351	}	1527	}
1352		1528
1353	inline void	1529	void inline_size
1354	wlist_del (WL *head, WL elem)	1530	wlist_del (WL *head, WL elem)
1355	{	1531	{
1356	while (*head)	1532	while (*head)
1357	{	1533	{
1358	if (*head == elem)	1534	if (*head == elem)
…		…
1363		1539
1364	head = &(*head)->next;	1540	head = &(*head)->next;
1365	}	1541	}
1366	}	1542	}
1367		1543
1368	inline void	1544	void inline_speed
1369	ev_clear_pending (EV_P_ W w)	1545	clear_pending (EV_P_ W w)
1370	{	1546	{
1371	if (w->pending)	1547	if (w->pending)
1372	{	1548	{
1373	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1549	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1374	w->pending = 0;	1550	w->pending = 0;
1375	}	1551	}
1376	}	1552	}
1377		1553
1378	inline void	1554	int
		1555	ev_clear_pending (EV_P_ void *w)
		1556	{
		1557	W w_ = (W)w;
		1558	int pending = w_->pending;
		1559
		1560	if (expect_true (pending))
		1561	{
		1562	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1563	w_->pending = 0;
		1564	p->w = 0;
		1565	return p->events;
		1566	}
		1567	else
		1568	return 0;
		1569	}
		1570
		1571	void inline_size
		1572	pri_adjust (EV_P_ W w)
		1573	{
		1574	int pri = w->priority;
		1575	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1576	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1577	w->priority = pri;
		1578	}
		1579
		1580	void inline_speed
1379	ev_start (EV_P_ W w, int active)	1581	ev_start (EV_P_ W w, int active)
1380	{	1582	{
1381	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1583	pri_adjust (EV_A_ w);
1382	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1383
1384	w->active = active;	1584	w->active = active;
1385	ev_ref (EV_A);	1585	ev_ref (EV_A);
1386	}	1586	}
1387		1587
1388	inline void	1588	void inline_size
1389	ev_stop (EV_P_ W w)	1589	ev_stop (EV_P_ W w)
1390	{	1590	{
1391	ev_unref (EV_A);	1591	ev_unref (EV_A);
1392	w->active = 0;	1592	w->active = 0;
1393	}	1593	}
1394		1594
1395	/*****************************************************************************/	1595	/*****************************************************************************/
1396		1596
1397	void	1597	void noinline
1398	ev_io_start (EV_P_ struct ev_io *w)	1598	ev_io_start (EV_P_ ev_io *w)
1399	{	1599	{
1400	int fd = w->fd;	1600	int fd = w->fd;
1401		1601
1402	if (expect_false (ev_is_active (w)))	1602	if (expect_false (ev_is_active (w)))
1403	return;	1603	return;
1404		1604
1405	assert (("ev_io_start called with negative fd", fd >= 0));	1605	assert (("ev_io_start called with negative fd", fd >= 0));
1406		1606
1407	ev_start (EV_A_ (W)w, 1);	1607	ev_start (EV_A_ (W)w, 1);
1408	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1608	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1409	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1609	wlist_add (&anfds[fd].head, (WL)w);
1410		1610
1411	fd_change (EV_A_ fd);	1611	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1612	w->events &= ~EV_IOFDSET;
1412	}	1613	}
1413		1614
1414	void	1615	void noinline
1415	ev_io_stop (EV_P_ struct ev_io *w)	1616	ev_io_stop (EV_P_ ev_io *w)
1416	{	1617	{
1417	ev_clear_pending (EV_A_ (W)w);	1618	clear_pending (EV_A_ (W)w);
1418	if (expect_false (!ev_is_active (w)))	1619	if (expect_false (!ev_is_active (w)))
1419	return;	1620	return;
1420		1621
1421	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1622	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1422		1623
1423	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1624	wlist_del (&anfds[w->fd].head, (WL)w);
1424	ev_stop (EV_A_ (W)w);	1625	ev_stop (EV_A_ (W)w);
1425		1626
1426	fd_change (EV_A_ w->fd);	1627	fd_change (EV_A_ w->fd, 1);
1427	}	1628	}
1428		1629
1429	void	1630	void noinline
1430	ev_timer_start (EV_P_ struct ev_timer *w)	1631	ev_timer_start (EV_P_ ev_timer *w)
1431	{	1632	{
1432	if (expect_false (ev_is_active (w)))	1633	if (expect_false (ev_is_active (w)))
1433	return;	1634	return;
1434		1635
1435	((WT)w)->at += mn_now;	1636	((WT)w)->at += mn_now;
1436		1637
1437	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1638	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1438		1639
1439	ev_start (EV_A_ (W)w, ++timercnt);	1640	ev_start (EV_A_ (W)w, ++timercnt);
1440	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);	1641	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1441	timers [timercnt - 1] = w;	1642	timers [timercnt - 1] = (WT)w;
1442	upheap ((WT *)timers, timercnt - 1);	1643	upheap (timers, timercnt - 1);
1443		1644
1444	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1645	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1445	}	1646	}
1446		1647
1447	void	1648	void noinline
1448	ev_timer_stop (EV_P_ struct ev_timer *w)	1649	ev_timer_stop (EV_P_ ev_timer *w)
1449	{	1650	{
1450	ev_clear_pending (EV_A_ (W)w);	1651	clear_pending (EV_A_ (W)w);
1451	if (expect_false (!ev_is_active (w)))	1652	if (expect_false (!ev_is_active (w)))
1452	return;	1653	return;
1453		1654
1454	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1655	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1455		1656
		1657	{
		1658	int active = ((W)w)->active;
		1659
1456	if (expect_true (((W)w)->active < timercnt--))	1660	if (expect_true (--active < --timercnt))
1457	{	1661	{
1458	timers [((W)w)->active - 1] = timers [timercnt];	1662	timers [active] = timers [timercnt];
1459	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1663	adjustheap (timers, timercnt, active);
1460	}	1664	}
		1665	}
1461		1666
1462	((WT)w)->at -= mn_now;	1667	((WT)w)->at -= mn_now;
1463		1668
1464	ev_stop (EV_A_ (W)w);	1669	ev_stop (EV_A_ (W)w);
1465	}	1670	}
1466		1671
1467	void	1672	void noinline
1468	ev_timer_again (EV_P_ struct ev_timer *w)	1673	ev_timer_again (EV_P_ ev_timer *w)
1469	{	1674	{
1470	if (ev_is_active (w))	1675	if (ev_is_active (w))
1471	{	1676	{
1472	if (w->repeat)	1677	if (w->repeat)
1473	{	1678	{
1474	((WT)w)->at = mn_now + w->repeat;	1679	((WT)w)->at = mn_now + w->repeat;
1475	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1680	adjustheap (timers, timercnt, ((W)w)->active - 1);
1476	}	1681	}
1477	else	1682	else
1478	ev_timer_stop (EV_A_ w);	1683	ev_timer_stop (EV_A_ w);
1479	}	1684	}
1480	else if (w->repeat)	1685	else if (w->repeat)
…		…
1482	w->at = w->repeat;	1687	w->at = w->repeat;
1483	ev_timer_start (EV_A_ w);	1688	ev_timer_start (EV_A_ w);
1484	}	1689	}
1485	}	1690	}
1486		1691
1487	#if EV_PERIODICS	1692	#if EV_PERIODIC_ENABLE
1488	void	1693	void noinline
1489	ev_periodic_start (EV_P_ struct ev_periodic *w)	1694	ev_periodic_start (EV_P_ ev_periodic *w)
1490	{	1695	{
1491	if (expect_false (ev_is_active (w)))	1696	if (expect_false (ev_is_active (w)))
1492	return;	1697	return;
1493		1698
1494	if (w->reschedule_cb)	1699	if (w->reschedule_cb)
1495	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1700	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1496	else if (w->interval)	1701	else if (w->interval)
1497	{	1702	{
1498	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1703	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1499	/* this formula differs from the one in periodic_reify because we do not always round up */	1704	/* this formula differs from the one in periodic_reify because we do not always round up */
1500	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1705	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1501	}	1706	}
		1707	else
		1708	((WT)w)->at = w->offset;
1502		1709
1503	ev_start (EV_A_ (W)w, ++periodiccnt);	1710	ev_start (EV_A_ (W)w, ++periodiccnt);
1504	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1711	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1505	periodics [periodiccnt - 1] = w;	1712	periodics [periodiccnt - 1] = (WT)w;
1506	upheap ((WT *)periodics, periodiccnt - 1);	1713	upheap (periodics, periodiccnt - 1);
1507		1714
1508	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1715	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1509	}	1716	}
1510		1717
1511	void	1718	void noinline
1512	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1719	ev_periodic_stop (EV_P_ ev_periodic *w)
1513	{	1720	{
1514	ev_clear_pending (EV_A_ (W)w);	1721	clear_pending (EV_A_ (W)w);
1515	if (expect_false (!ev_is_active (w)))	1722	if (expect_false (!ev_is_active (w)))
1516	return;	1723	return;
1517		1724
1518	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1725	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1519		1726
		1727	{
		1728	int active = ((W)w)->active;
		1729
1520	if (expect_true (((W)w)->active < periodiccnt--))	1730	if (expect_true (--active < --periodiccnt))
1521	{	1731	{
1522	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1732	periodics [active] = periodics [periodiccnt];
1523	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1733	adjustheap (periodics, periodiccnt, active);
1524	}	1734	}
		1735	}
1525		1736
1526	ev_stop (EV_A_ (W)w);	1737	ev_stop (EV_A_ (W)w);
1527	}	1738	}
1528		1739
1529	void	1740	void noinline
1530	ev_periodic_again (EV_P_ struct ev_periodic *w)	1741	ev_periodic_again (EV_P_ ev_periodic *w)
1531	{	1742	{
1532	/* TODO: use adjustheap and recalculation */	1743	/* TODO: use adjustheap and recalculation */
1533	ev_periodic_stop (EV_A_ w);	1744	ev_periodic_stop (EV_A_ w);
1534	ev_periodic_start (EV_A_ w);	1745	ev_periodic_start (EV_A_ w);
1535	}	1746	}
1536	#endif	1747	#endif
1537		1748
1538	void
1539	ev_idle_start (EV_P_ struct ev_idle *w)
1540	{
1541	if (expect_false (ev_is_active (w)))
1542	return;
1543
1544	ev_start (EV_A_ (W)w, ++idlecnt);
1545	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1546	idles [idlecnt - 1] = w;
1547	}
1548
1549	void
1550	ev_idle_stop (EV_P_ struct ev_idle *w)
1551	{
1552	ev_clear_pending (EV_A_ (W)w);
1553	if (expect_false (!ev_is_active (w)))
1554	return;
1555
1556	idles [((W)w)->active - 1] = idles [--idlecnt];
1557	ev_stop (EV_A_ (W)w);
1558	}
1559
1560	void
1561	ev_prepare_start (EV_P_ struct ev_prepare *w)
1562	{
1563	if (expect_false (ev_is_active (w)))
1564	return;
1565
1566	ev_start (EV_A_ (W)w, ++preparecnt);
1567	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1568	prepares [preparecnt - 1] = w;
1569	}
1570
1571	void
1572	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1573	{
1574	ev_clear_pending (EV_A_ (W)w);
1575	if (expect_false (!ev_is_active (w)))
1576	return;
1577
1578	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1579	ev_stop (EV_A_ (W)w);
1580	}
1581
1582	void
1583	ev_check_start (EV_P_ struct ev_check *w)
1584	{
1585	if (expect_false (ev_is_active (w)))
1586	return;
1587
1588	ev_start (EV_A_ (W)w, ++checkcnt);
1589	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1590	checks [checkcnt - 1] = w;
1591	}
1592
1593	void
1594	ev_check_stop (EV_P_ struct ev_check *w)
1595	{
1596	ev_clear_pending (EV_A_ (W)w);
1597	if (expect_false (!ev_is_active (w)))
1598	return;
1599
1600	checks [((W)w)->active - 1] = checks [--checkcnt];
1601	ev_stop (EV_A_ (W)w);
1602	}
1603
1604	#ifndef SA_RESTART	1749	#ifndef SA_RESTART
1605	# define SA_RESTART 0	1750	# define SA_RESTART 0
1606	#endif	1751	#endif
1607		1752
1608	void	1753	void noinline
1609	ev_signal_start (EV_P_ struct ev_signal *w)	1754	ev_signal_start (EV_P_ ev_signal *w)
1610	{	1755	{
1611	#if EV_MULTIPLICITY	1756	#if EV_MULTIPLICITY
1612	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1757	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1613	#endif	1758	#endif
1614	if (expect_false (ev_is_active (w)))	1759	if (expect_false (ev_is_active (w)))
1615	return;	1760	return;
1616		1761
1617	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1762	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1618		1763
		1764	{
		1765	#ifndef _WIN32
		1766	sigset_t full, prev;
		1767	sigfillset (&full);
		1768	sigprocmask (SIG_SETMASK, &full, &prev);
		1769	#endif
		1770
		1771	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1772
		1773	#ifndef _WIN32
		1774	sigprocmask (SIG_SETMASK, &prev, 0);
		1775	#endif
		1776	}
		1777
1619	ev_start (EV_A_ (W)w, 1);	1778	ev_start (EV_A_ (W)w, 1);
1620	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1621	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1779	wlist_add (&signals [w->signum - 1].head, (WL)w);
1622		1780
1623	if (!((WL)w)->next)	1781	if (!((WL)w)->next)
1624	{	1782	{
1625	#if _WIN32	1783	#if _WIN32
1626	signal (w->signum, sighandler);	1784	signal (w->signum, sighandler);
…		…
1632	sigaction (w->signum, &sa, 0);	1790	sigaction (w->signum, &sa, 0);
1633	#endif	1791	#endif
1634	}	1792	}
1635	}	1793	}
1636		1794
1637	void	1795	void noinline
1638	ev_signal_stop (EV_P_ struct ev_signal *w)	1796	ev_signal_stop (EV_P_ ev_signal *w)
1639	{	1797	{
1640	ev_clear_pending (EV_A_ (W)w);	1798	clear_pending (EV_A_ (W)w);
1641	if (expect_false (!ev_is_active (w)))	1799	if (expect_false (!ev_is_active (w)))
1642	return;	1800	return;
1643		1801
1644	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1802	wlist_del (&signals [w->signum - 1].head, (WL)w);
1645	ev_stop (EV_A_ (W)w);	1803	ev_stop (EV_A_ (W)w);
1646		1804
1647	if (!signals [w->signum - 1].head)	1805	if (!signals [w->signum - 1].head)
1648	signal (w->signum, SIG_DFL);	1806	signal (w->signum, SIG_DFL);
1649	}	1807	}
1650		1808
1651	void	1809	void
1652	ev_child_start (EV_P_ struct ev_child *w)	1810	ev_child_start (EV_P_ ev_child *w)
1653	{	1811	{
1654	#if EV_MULTIPLICITY	1812	#if EV_MULTIPLICITY
1655	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1813	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1656	#endif	1814	#endif
1657	if (expect_false (ev_is_active (w)))	1815	if (expect_false (ev_is_active (w)))
1658	return;	1816	return;
1659		1817
1660	ev_start (EV_A_ (W)w, 1);	1818	ev_start (EV_A_ (W)w, 1);
1661	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1819	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1662	}	1820	}
1663		1821
1664	void	1822	void
1665	ev_child_stop (EV_P_ struct ev_child *w)	1823	ev_child_stop (EV_P_ ev_child *w)
1666	{	1824	{
1667	ev_clear_pending (EV_A_ (W)w);	1825	clear_pending (EV_A_ (W)w);
1668	if (expect_false (!ev_is_active (w)))	1826	if (expect_false (!ev_is_active (w)))
1669	return;	1827	return;
1670		1828
1671	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1829	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1672	ev_stop (EV_A_ (W)w);	1830	ev_stop (EV_A_ (W)w);
1673	}	1831	}
1674		1832
1675	#if EV_MULTIPLICITY	1833	#if EV_STAT_ENABLE
		1834
		1835	# ifdef _WIN32
		1836	# undef lstat
		1837	# define lstat(a,b) _stati64 (a,b)
		1838	# endif
		1839
		1840	#define DEF_STAT_INTERVAL 5.0074891
		1841	#define MIN_STAT_INTERVAL 0.1074891
		1842
		1843	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1844
		1845	#if EV_USE_INOTIFY
		1846	# define EV_INOTIFY_BUFSIZE 8192
		1847
		1848	static void noinline
		1849	infy_add (EV_P_ ev_stat *w)
		1850	{
		1851	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);
		1852
		1853	if (w->wd < 0)
		1854	{
		1855	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1856
		1857	/* monitor some parent directory for speedup hints */
		1858	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1859	{
		1860	char path [4096];
		1861	strcpy (path, w->path);
		1862
		1863	do
		1864	{
		1865	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1866	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1867
		1868	char *pend = strrchr (path, '/');
		1869
		1870	if (!pend)
		1871	break; /* whoops, no '/', complain to your admin */
		1872
		1873	*pend = 0;
		1874	w->wd = inotify_add_watch (fs_fd, path, mask);
		1875	}
		1876	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1877	}
		1878	}
		1879	else
		1880	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1881
		1882	if (w->wd >= 0)
		1883	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1884	}
		1885
		1886	static void noinline
		1887	infy_del (EV_P_ ev_stat *w)
		1888	{
		1889	int slot;
		1890	int wd = w->wd;
		1891
		1892	if (wd < 0)
		1893	return;
		1894
		1895	w->wd = -2;
		1896	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1897	wlist_del (&fs_hash [slot].head, (WL)w);
		1898
		1899	/* remove this watcher, if others are watching it, they will rearm */
		1900	inotify_rm_watch (fs_fd, wd);
		1901	}
		1902
		1903	static void noinline
		1904	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1905	{
		1906	if (slot < 0)
		1907	/* overflow, need to check for all hahs slots */
		1908	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1909	infy_wd (EV_A_ slot, wd, ev);
		1910	else
		1911	{
		1912	WL w_;
		1913
		1914	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1915	{
		1916	ev_stat *w = (ev_stat *)w_;
		1917	w_ = w_->next; /* lets us remove this watcher and all before it */
		1918
		1919	if (w->wd == wd || wd == -1)
		1920	{
		1921	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1922	{
		1923	w->wd = -1;
		1924	infy_add (EV_A_ w); /* re-add, no matter what */
		1925	}
		1926
		1927	stat_timer_cb (EV_A_ &w->timer, 0);
		1928	}
		1929	}
		1930	}
		1931	}
		1932
1676	static void	1933	static void
1677	embed_cb (EV_P_ struct ev_io *io, int revents)	1934	infy_cb (EV_P_ ev_io *w, int revents)
1678	{	1935	{
1679	struct ev_embed *w = (struct ev_embed *)(((char *)io) - offsetof (struct ev_embed, io));	1936	char buf [EV_INOTIFY_BUFSIZE];
		1937	struct inotify_event *ev = (struct inotify_event *)buf;
		1938	int ofs;
		1939	int len = read (fs_fd, buf, sizeof (buf));
1680		1940
		1941	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1942	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1943	}
		1944
		1945	void inline_size
		1946	infy_init (EV_P)
		1947	{
		1948	if (fs_fd != -2)
		1949	return;
		1950
		1951	fs_fd = inotify_init ();
		1952
		1953	if (fs_fd >= 0)
		1954	{
		1955	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1956	ev_set_priority (&fs_w, EV_MAXPRI);
		1957	ev_io_start (EV_A_ &fs_w);
		1958	}
		1959	}
		1960
		1961	void inline_size
		1962	infy_fork (EV_P)
		1963	{
		1964	int slot;
		1965
		1966	if (fs_fd < 0)
		1967	return;
		1968
		1969	close (fs_fd);
		1970	fs_fd = inotify_init ();
		1971
		1972	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1973	{
		1974	WL w_ = fs_hash [slot].head;
		1975	fs_hash [slot].head = 0;
		1976
		1977	while (w_)
		1978	{
		1979	ev_stat *w = (ev_stat *)w_;
		1980	w_ = w_->next; /* lets us add this watcher */
		1981
		1982	w->wd = -1;
		1983
		1984	if (fs_fd >= 0)
		1985	infy_add (EV_A_ w); /* re-add, no matter what */
		1986	else
		1987	ev_timer_start (EV_A_ &w->timer);
		1988	}
		1989
		1990	}
		1991	}
		1992
		1993	#endif
		1994
		1995	void
		1996	ev_stat_stat (EV_P_ ev_stat *w)
		1997	{
		1998	if (lstat (w->path, &w->attr) < 0)
		1999	w->attr.st_nlink = 0;
		2000	else if (!w->attr.st_nlink)
		2001	w->attr.st_nlink = 1;
		2002	}
		2003
		2004	static void noinline
		2005	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2006	{
		2007	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2008
		2009	/* we copy this here each the time so that */
		2010	/* prev has the old value when the callback gets invoked */
		2011	w->prev = w->attr;
		2012	ev_stat_stat (EV_A_ w);
		2013
		2014	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2015	if (
		2016	w->prev.st_dev != w->attr.st_dev
		2017	|| w->prev.st_ino != w->attr.st_ino
		2018	|| w->prev.st_mode != w->attr.st_mode
		2019	|| w->prev.st_nlink != w->attr.st_nlink
		2020	|| w->prev.st_uid != w->attr.st_uid
		2021	|| w->prev.st_gid != w->attr.st_gid
		2022	|| w->prev.st_rdev != w->attr.st_rdev
		2023	|| w->prev.st_size != w->attr.st_size
		2024	|| w->prev.st_atime != w->attr.st_atime
		2025	|| w->prev.st_mtime != w->attr.st_mtime
		2026	|| w->prev.st_ctime != w->attr.st_ctime
		2027	) {
		2028	#if EV_USE_INOTIFY
		2029	infy_del (EV_A_ w);
		2030	infy_add (EV_A_ w);
		2031	ev_stat_stat (EV_A_ w); /* avoid race... */
		2032	#endif
		2033
1681	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2034	ev_feed_event (EV_A_ w, EV_STAT);
		2035	}
		2036	}
		2037
		2038	void
		2039	ev_stat_start (EV_P_ ev_stat *w)
		2040	{
		2041	if (expect_false (ev_is_active (w)))
		2042	return;
		2043
		2044	/* since we use memcmp, we need to clear any padding data etc. */
		2045	memset (&w->prev, 0, sizeof (ev_statdata));
		2046	memset (&w->attr, 0, sizeof (ev_statdata));
		2047
		2048	ev_stat_stat (EV_A_ w);
		2049
		2050	if (w->interval < MIN_STAT_INTERVAL)
		2051	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2052
		2053	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2054	ev_set_priority (&w->timer, ev_priority (w));
		2055
		2056	#if EV_USE_INOTIFY
		2057	infy_init (EV_A);
		2058
		2059	if (fs_fd >= 0)
		2060	infy_add (EV_A_ w);
		2061	else
		2062	#endif
		2063	ev_timer_start (EV_A_ &w->timer);
		2064
		2065	ev_start (EV_A_ (W)w, 1);
		2066	}
		2067
		2068	void
		2069	ev_stat_stop (EV_P_ ev_stat *w)
		2070	{
		2071	clear_pending (EV_A_ (W)w);
		2072	if (expect_false (!ev_is_active (w)))
		2073	return;
		2074
		2075	#if EV_USE_INOTIFY
		2076	infy_del (EV_A_ w);
		2077	#endif
		2078	ev_timer_stop (EV_A_ &w->timer);
		2079
		2080	ev_stop (EV_A_ (W)w);
		2081	}
		2082	#endif
		2083
		2084	#if EV_IDLE_ENABLE
		2085	void
		2086	ev_idle_start (EV_P_ ev_idle *w)
		2087	{
		2088	if (expect_false (ev_is_active (w)))
		2089	return;
		2090
		2091	pri_adjust (EV_A_ (W)w);
		2092
		2093	{
		2094	int active = ++idlecnt [ABSPRI (w)];
		2095
		2096	++idleall;
		2097	ev_start (EV_A_ (W)w, active);
		2098
		2099	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2100	idles [ABSPRI (w)][active - 1] = w;
		2101	}
		2102	}
		2103
		2104	void
		2105	ev_idle_stop (EV_P_ ev_idle *w)
		2106	{
		2107	clear_pending (EV_A_ (W)w);
		2108	if (expect_false (!ev_is_active (w)))
		2109	return;
		2110
		2111	{
		2112	int active = ((W)w)->active;
		2113
		2114	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2115	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2116
		2117	ev_stop (EV_A_ (W)w);
		2118	--idleall;
		2119	}
		2120	}
		2121	#endif
		2122
		2123	void
		2124	ev_prepare_start (EV_P_ ev_prepare *w)
		2125	{
		2126	if (expect_false (ev_is_active (w)))
		2127	return;
		2128
		2129	ev_start (EV_A_ (W)w, ++preparecnt);
		2130	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2131	prepares [preparecnt - 1] = w;
		2132	}
		2133
		2134	void
		2135	ev_prepare_stop (EV_P_ ev_prepare *w)
		2136	{
		2137	clear_pending (EV_A_ (W)w);
		2138	if (expect_false (!ev_is_active (w)))
		2139	return;
		2140
		2141	{
		2142	int active = ((W)w)->active;
		2143	prepares [active - 1] = prepares [--preparecnt];
		2144	((W)prepares [active - 1])->active = active;
		2145	}
		2146
		2147	ev_stop (EV_A_ (W)w);
		2148	}
		2149
		2150	void
		2151	ev_check_start (EV_P_ ev_check *w)
		2152	{
		2153	if (expect_false (ev_is_active (w)))
		2154	return;
		2155
		2156	ev_start (EV_A_ (W)w, ++checkcnt);
		2157	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2158	checks [checkcnt - 1] = w;
		2159	}
		2160
		2161	void
		2162	ev_check_stop (EV_P_ ev_check *w)
		2163	{
		2164	clear_pending (EV_A_ (W)w);
		2165	if (expect_false (!ev_is_active (w)))
		2166	return;
		2167
		2168	{
		2169	int active = ((W)w)->active;
		2170	checks [active - 1] = checks [--checkcnt];
		2171	((W)checks [active - 1])->active = active;
		2172	}
		2173
		2174	ev_stop (EV_A_ (W)w);
		2175	}
		2176
		2177	#if EV_EMBED_ENABLE
		2178	void noinline
		2179	ev_embed_sweep (EV_P_ ev_embed *w)
		2180	{
1682	ev_loop (w->loop, EVLOOP_NONBLOCK);	2181	ev_loop (w->loop, EVLOOP_NONBLOCK);
1683	}	2182	}
1684		2183
		2184	static void
		2185	embed_cb (EV_P_ ev_io *io, int revents)
		2186	{
		2187	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2188
		2189	if (ev_cb (w))
		2190	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2191	else
		2192	ev_embed_sweep (loop, w);
		2193	}
		2194
1685	void	2195	void
1686	ev_embed_start (EV_P_ struct ev_embed *w)	2196	ev_embed_start (EV_P_ ev_embed *w)
1687	{	2197	{
1688	if (expect_false (ev_is_active (w)))	2198	if (expect_false (ev_is_active (w)))
1689	return;	2199	return;
1690		2200
1691	{	2201	{
1692	struct ev_loop *loop = w->loop;	2202	struct ev_loop *loop = w->loop;
1693	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2203	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1694	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2204	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1695	}	2205	}
1696		2206
		2207	ev_set_priority (&w->io, ev_priority (w));
1697	ev_io_start (EV_A_ &w->io);	2208	ev_io_start (EV_A_ &w->io);
		2209
1698	ev_start (EV_A_ (W)w, 1);	2210	ev_start (EV_A_ (W)w, 1);
1699	}	2211	}
1700		2212
1701	void	2213	void
1702	ev_embed_stop (EV_P_ struct ev_embed *w)	2214	ev_embed_stop (EV_P_ ev_embed *w)
1703	{	2215	{
1704	ev_clear_pending (EV_A_ (W)w);	2216	clear_pending (EV_A_ (W)w);
1705	if (expect_false (!ev_is_active (w)))	2217	if (expect_false (!ev_is_active (w)))
1706	return;	2218	return;
1707		2219
1708	ev_io_stop (EV_A_ &w->io);	2220	ev_io_stop (EV_A_ &w->io);
		2221
1709	ev_stop (EV_A_ (W)w);	2222	ev_stop (EV_A_ (W)w);
1710	}	2223	}
1711	#endif	2224	#endif
1712		2225
		2226	#if EV_FORK_ENABLE
		2227	void
		2228	ev_fork_start (EV_P_ ev_fork *w)
		2229	{
		2230	if (expect_false (ev_is_active (w)))
		2231	return;
		2232
		2233	ev_start (EV_A_ (W)w, ++forkcnt);
		2234	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2235	forks [forkcnt - 1] = w;
		2236	}
		2237
		2238	void
		2239	ev_fork_stop (EV_P_ ev_fork *w)
		2240	{
		2241	clear_pending (EV_A_ (W)w);
		2242	if (expect_false (!ev_is_active (w)))
		2243	return;
		2244
		2245	{
		2246	int active = ((W)w)->active;
		2247	forks [active - 1] = forks [--forkcnt];
		2248	((W)forks [active - 1])->active = active;
		2249	}
		2250
		2251	ev_stop (EV_A_ (W)w);
		2252	}
		2253	#endif
		2254
1713	/*****************************************************************************/	2255	/*****************************************************************************/
1714		2256
1715	struct ev_once	2257	struct ev_once
1716	{	2258	{
1717	struct ev_io io;	2259	ev_io io;
1718	struct ev_timer to;	2260	ev_timer to;
1719	void (*cb)(int revents, void *arg);	2261	void (*cb)(int revents, void *arg);
1720	void *arg;	2262	void *arg;
1721	};	2263	};
1722		2264
1723	static void	2265	static void
…		…
1732		2274
1733	cb (revents, arg);	2275	cb (revents, arg);
1734	}	2276	}
1735		2277
1736	static void	2278	static void
1737	once_cb_io (EV_P_ struct ev_io *w, int revents)	2279	once_cb_io (EV_P_ ev_io *w, int revents)
1738	{	2280	{
1739	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2281	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1740	}	2282	}
1741		2283
1742	static void	2284	static void
1743	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2285	once_cb_to (EV_P_ ev_timer *w, int revents)
1744	{	2286	{
1745	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2287	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1746	}	2288	}
1747		2289
1748	void	2290	void

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