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Comparing libev/ev.c (file contents):
Revision 1.131 by root, Fri Nov 23 05:43:45 2007 UTC vs.
Revision 1.184 by root, Wed Dec 12 05:30:52 2007 UTC

…		…
32	#ifdef __cplusplus	32	#ifdef __cplusplus
33	extern "C" {	33	extern "C" {
34	#endif	34	#endif
35		35
36	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
37	# include "config.h"	40	# include "config.h"
		41	# endif
38		42
39	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
40	# ifndef EV_USE_MONOTONIC	44	# ifndef EV_USE_MONOTONIC
41	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
42	# endif	46	# endif
…		…
90	# else	94	# else
91	# define EV_USE_PORT 0	95	# define EV_USE_PORT 0
92	# endif	96	# endif
93	# endif	97	# endif
94		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
95	#endif	107	#endif
96		108
97	#include <math.h>	109	#include <math.h>
98	#include <stdlib.h>	110	#include <stdlib.h>
99	#include <fcntl.h>	111	#include <fcntl.h>
…		…
106	#include <sys/types.h>	118	#include <sys/types.h>
107	#include <time.h>	119	#include <time.h>
108		120
109	#include <signal.h>	121	#include <signal.h>
110		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
111	#ifndef _WIN32	129	#ifndef _WIN32
112	# include <unistd.h>
113	# include <sys/time.h>	130	# include <sys/time.h>
114	# include <sys/wait.h>	131	# include <sys/wait.h>
		132	# include <unistd.h>
115	#else	133	#else
116	# define WIN32_LEAN_AND_MEAN	134	# define WIN32_LEAN_AND_MEAN
117	# include <windows.h>	135	# include <windows.h>
118	# ifndef EV_SELECT_IS_WINSOCKET	136	# ifndef EV_SELECT_IS_WINSOCKET
119	# define EV_SELECT_IS_WINSOCKET 1	137	# define EV_SELECT_IS_WINSOCKET 1
…		…
152		170
153	#ifndef EV_USE_PORT	171	#ifndef EV_USE_PORT
154	# define EV_USE_PORT 0	172	# define EV_USE_PORT 0
155	#endif	173	#endif
156		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
157	/**/	195	/**/
158		196
159	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
160	# undef EV_USE_MONOTONIC	198	# undef EV_USE_MONOTONIC
161	# define EV_USE_MONOTONIC 0	199	# define EV_USE_MONOTONIC 0
…		…
168		206
169	#if EV_SELECT_IS_WINSOCKET	207	#if EV_SELECT_IS_WINSOCKET
170	# include <winsock.h>	208	# include <winsock.h>
171	#endif	209	#endif
172		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
173	/**/	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 */
174		230
175	#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) */
176	#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) */
177	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
178	/*#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 */
179
180	#ifdef EV_H
181	# include EV_H
182	#else
183	# include "ev.h"
184	#endif
185		234
186	#if __GNUC__ >= 3	235	#if __GNUC__ >= 3
187	# define expect(expr,value) __builtin_expect ((expr),(value))	236	# define expect(expr,value) __builtin_expect ((expr),(value))
188	# define inline static inline	237	# define noinline __attribute__ ((noinline))
189	#else	238	#else
190	# define expect(expr,value) (expr)	239	# define expect(expr,value) (expr)
191	# define inline static	240	# define noinline
		241	# if __STDC_VERSION__ < 199901L
		242	# define inline
		243	# endif
192	#endif	244	#endif
193		245
194	#define expect_false(expr) expect ((expr) != 0, 0)	246	#define expect_false(expr) expect ((expr) != 0, 0)
195	#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
196		255
197	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	256	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
198	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	257	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
199		258
200	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	259	#define EMPTY /* required for microsofts broken pseudo-c compiler */
201	#define EMPTY2(a,b) /* used to suppress some warnings */	260	#define EMPTY2(a,b) /* used to suppress some warnings */
202		261
203	typedef struct ev_watcher *W;	262	typedef ev_watcher *W;
204	typedef struct ev_watcher_list *WL;	263	typedef ev_watcher_list *WL;
205	typedef struct ev_watcher_time *WT;	264	typedef ev_watcher_time *WT;
206		265
207	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	266	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
208		267
209	#ifdef _WIN32	268	#ifdef _WIN32
210	# include "ev_win32.c"	269	# include "ev_win32.c"
…		…
212		271
213	/*****************************************************************************/	272	/*****************************************************************************/
214		273
215	static void (*syserr_cb)(const char *msg);	274	static void (*syserr_cb)(const char *msg);
216		275
		276	void
217	void ev_set_syserr_cb (void (*cb)(const char *msg))	277	ev_set_syserr_cb (void (*cb)(const char *msg))
218	{	278	{
219	syserr_cb = cb;	279	syserr_cb = cb;
220	}	280	}
221		281
222	static void	282	static void noinline
223	syserr (const char *msg)	283	syserr (const char *msg)
224	{	284	{
225	if (!msg)	285	if (!msg)
226	msg = "(libev) system error";	286	msg = "(libev) system error";
227		287
…		…
234	}	294	}
235	}	295	}
236		296
237	static void *(*alloc)(void *ptr, long size);	297	static void *(*alloc)(void *ptr, long size);
238		298
		299	void
239	void ev_set_allocator (void *(*cb)(void *ptr, long size))	300	ev_set_allocator (void *(*cb)(void *ptr, long size))
240	{	301	{
241	alloc = cb;	302	alloc = cb;
242	}	303	}
243		304
244	static void *	305	inline_speed void *
245	ev_realloc (void *ptr, long size)	306	ev_realloc (void *ptr, long size)
246	{	307	{
247	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
248		309
249	if (!ptr && size)	310	if (!ptr && size)
…		…
273	typedef struct	334	typedef struct
274	{	335	{
275	W w;	336	W w;
276	int events;	337	int events;
277	} ANPENDING;	338	} ANPENDING;
		339
		340	#if EV_USE_INOTIFY
		341	typedef struct
		342	{
		343	WL head;
		344	} ANFS;
		345	#endif
278		346
279	#if EV_MULTIPLICITY	347	#if EV_MULTIPLICITY
280		348
281	struct ev_loop	349	struct ev_loop
282	{	350	{
…		…
316	gettimeofday (&tv, 0);	384	gettimeofday (&tv, 0);
317	return tv.tv_sec + tv.tv_usec * 1e-6;	385	return tv.tv_sec + tv.tv_usec * 1e-6;
318	#endif	386	#endif
319	}	387	}
320		388
321	inline ev_tstamp	389	ev_tstamp inline_size
322	get_clock (void)	390	get_clock (void)
323	{	391	{
324	#if EV_USE_MONOTONIC	392	#if EV_USE_MONOTONIC
325	if (expect_true (have_monotonic))	393	if (expect_true (have_monotonic))
326	{	394	{
…		…
339	{	407	{
340	return ev_rt_now;	408	return ev_rt_now;
341	}	409	}
342	#endif	410	#endif
343		411
344	#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	}
345		439
346	#define array_needsize(type,base,cur,cnt,init) \	440	#define array_needsize(type,base,cur,cnt,init) \
347	if (expect_false ((cnt) > cur)) \	441	if (expect_false ((cnt) > (cur))) \
348	{ \	442	{ \
349	int newcnt = cur; \	443	int ocur_ = (cur); \
350	do \	444	(base) = (type *)array_realloc \
351	{ \	445	(sizeof (type), (base), &(cur), (cnt)); \
352	newcnt = array_roundsize (type, newcnt << 1); \	446	init ((base) + (ocur_), (cur) - ocur_); \
353	} \
354	while ((cnt) > newcnt); \
355	\
356	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
357	init (base + cur, newcnt - cur); \
358	cur = newcnt; \
359	}	447	}
360		448
		449	#if 0
361	#define array_slim(type,stem) \	450	#define array_slim(type,stem) \
362	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	451	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
363	{ \	452	{ \
364	stem ## max = array_roundsize (stem ## cnt >> 1); \	453	stem ## max = array_roundsize (stem ## cnt >> 1); \
365	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	454	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
366	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	455	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
367	}	456	}
		457	#endif
368		458
369	#define array_free(stem, idx) \	459	#define array_free(stem, idx) \
370	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;
371		461
372	/*****************************************************************************/	462	/*****************************************************************************/
373		463
374	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
375	anfds_init (ANFD *base, int count)	493	anfds_init (ANFD *base, int count)
376	{	494	{
377	while (count--)	495	while (count--)
378	{	496	{
379	base->head = 0;	497	base->head = 0;
…		…
382		500
383	++base;	501	++base;
384	}	502	}
385	}	503	}
386		504
387	void	505	void inline_speed
388	ev_feed_event (EV_P_ void *w, int revents)
389	{
390	W w_ = (W)w;
391
392	if (expect_false (w_->pending))
393	{
394	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
395	return;
396	}
397
398	w_->pending = ++pendingcnt [ABSPRI (w_)];
399	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
400	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
401	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
402	}
403
404	static void
405	queue_events (EV_P_ W *events, int eventcnt, int type)
406	{
407	int i;
408
409	for (i = 0; i < eventcnt; ++i)
410	ev_feed_event (EV_A_ events [i], type);
411	}
412
413	inline void
414	fd_event (EV_P_ int fd, int revents)	506	fd_event (EV_P_ int fd, int revents)
415	{	507	{
416	ANFD *anfd = anfds + fd;	508	ANFD *anfd = anfds + fd;
417	struct ev_io *w;	509	ev_io *w;
418		510
419	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)
420	{	512	{
421	int ev = w->events & revents;	513	int ev = w->events & revents;
422		514
423	if (ev)	515	if (ev)
424	ev_feed_event (EV_A_ (W)w, ev);	516	ev_feed_event (EV_A_ (W)w, ev);
…		…
426	}	518	}
427		519
428	void	520	void
429	ev_feed_fd_event (EV_P_ int fd, int revents)	521	ev_feed_fd_event (EV_P_ int fd, int revents)
430	{	522	{
		523	if (fd >= 0 && fd < anfdmax)
431	fd_event (EV_A_ fd, revents);	524	fd_event (EV_A_ fd, revents);
432	}	525	}
433		526
434	/*****************************************************************************/	527	void inline_size
435
436	inline void
437	fd_reify (EV_P)	528	fd_reify (EV_P)
438	{	529	{
439	int i;	530	int i;
440		531
441	for (i = 0; i < fdchangecnt; ++i)	532	for (i = 0; i < fdchangecnt; ++i)
442	{	533	{
443	int fd = fdchanges [i];	534	int fd = fdchanges [i];
444	ANFD *anfd = anfds + fd;	535	ANFD *anfd = anfds + fd;
445	struct ev_io *w;	536	ev_io *w;
446		537
447	int events = 0;	538	unsigned char events = 0;
448		539
449	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)
450	events |= w->events;	541	events |= (unsigned char)w->events;
451		542
452	#if EV_SELECT_IS_WINSOCKET	543	#if EV_SELECT_IS_WINSOCKET
453	if (events)	544	if (events)
454	{	545	{
455	unsigned long argp;	546	unsigned long argp;
456	anfd->handle = _get_osfhandle (fd);	547	anfd->handle = _get_osfhandle (fd);
457	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));
458	}	549	}
459	#endif	550	#endif
460		551
		552	{
		553	unsigned char o_events = anfd->events;
		554	unsigned char o_reify = anfd->reify;
		555
461	anfd->reify = 0;	556	anfd->reify = 0;
462
463	backend_modify (EV_A_ fd, anfd->events, events);
464	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	}
465	}	562	}
466		563
467	fdchangecnt = 0;	564	fdchangecnt = 0;
468	}	565	}
469		566
470	static void	567	void inline_size
471	fd_change (EV_P_ int fd)	568	fd_change (EV_P_ int fd, int flags)
472	{	569	{
473	if (expect_false (anfds [fd].reify))	570	unsigned char reify = anfds [fd].reify;
474	return;
475
476	anfds [fd].reify = 1;	571	anfds [fd].reify |= flags;
477		572
		573	if (expect_true (!reify))
		574	{
478	++fdchangecnt;	575	++fdchangecnt;
479	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	576	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
480	fdchanges [fdchangecnt - 1] = fd;	577	fdchanges [fdchangecnt - 1] = fd;
		578	}
481	}	579	}
482		580
483	static void	581	void inline_speed
484	fd_kill (EV_P_ int fd)	582	fd_kill (EV_P_ int fd)
485	{	583	{
486	struct ev_io *w;	584	ev_io *w;
487		585
488	while ((w = (struct ev_io *)anfds [fd].head))	586	while ((w = (ev_io *)anfds [fd].head))
489	{	587	{
490	ev_io_stop (EV_A_ w);	588	ev_io_stop (EV_A_ w);
491	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);
492	}	590	}
493	}	591	}
494		592
495	inline int	593	int inline_size
496	fd_valid (int fd)	594	fd_valid (int fd)
497	{	595	{
498	#ifdef _WIN32	596	#ifdef _WIN32
499	return _get_osfhandle (fd) != -1;	597	return _get_osfhandle (fd) != -1;
500	#else	598	#else
501	return fcntl (fd, F_GETFD) != -1;	599	return fcntl (fd, F_GETFD) != -1;
502	#endif	600	#endif
503	}	601	}
504		602
505	/* called on EBADF to verify fds */	603	/* called on EBADF to verify fds */
506	static void	604	static void noinline
507	fd_ebadf (EV_P)	605	fd_ebadf (EV_P)
508	{	606	{
509	int fd;	607	int fd;
510		608
511	for (fd = 0; fd < anfdmax; ++fd)	609	for (fd = 0; fd < anfdmax; ++fd)
…		…
513	if (!fd_valid (fd) == -1 && errno == EBADF)	611	if (!fd_valid (fd) == -1 && errno == EBADF)
514	fd_kill (EV_A_ fd);	612	fd_kill (EV_A_ fd);
515	}	613	}
516		614
517	/* 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 */
518	static void	616	static void noinline
519	fd_enomem (EV_P)	617	fd_enomem (EV_P)
520	{	618	{
521	int fd;	619	int fd;
522		620
523	for (fd = anfdmax; fd--; )	621	for (fd = anfdmax; fd--; )
…		…
527	return;	625	return;
528	}	626	}
529	}	627	}
530		628
531	/* 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 */
532	static void	630	static void noinline
533	fd_rearm_all (EV_P)	631	fd_rearm_all (EV_P)
534	{	632	{
535	int fd;	633	int fd;
536		634
537	/* this should be highly optimised to not do anything but set a flag */
538	for (fd = 0; fd < anfdmax; ++fd)	635	for (fd = 0; fd < anfdmax; ++fd)
539	if (anfds [fd].events)	636	if (anfds [fd].events)
540	{	637	{
541	anfds [fd].events = 0;	638	anfds [fd].events = 0;
542	fd_change (EV_A_ fd);	639	fd_change (EV_A_ fd, EV_IOFDSET | 1);
543	}	640	}
544	}	641	}
545		642
546	/*****************************************************************************/	643	/*****************************************************************************/
547		644
548	static void	645	void inline_speed
549	upheap (WT *heap, int k)	646	upheap (WT *heap, int k)
550	{	647	{
551	WT w = heap [k];	648	WT w = heap [k];
552		649
553	while (k && heap [k >> 1]->at > w->at)	650	while (k)
554	{	651	{
		652	int p = (k - 1) >> 1;
		653
		654	if (heap [p]->at <= w->at)
		655	break;
		656
555	heap [k] = heap [k >> 1];	657	heap [k] = heap [p];
556	((W)heap [k])->active = k + 1;	658	((W)heap [k])->active = k + 1;
557	k >>= 1;	659	k = p;
558	}	660	}
559		661
560	heap [k] = w;	662	heap [k] = w;
561	((W)heap [k])->active = k + 1;	663	((W)heap [k])->active = k + 1;
562
563	}	664	}
564		665
565	static void	666	void inline_speed
566	downheap (WT *heap, int N, int k)	667	downheap (WT *heap, int N, int k)
567	{	668	{
568	WT w = heap [k];	669	WT w = heap [k];
569		670
570	while (k < (N >> 1))	671	for (;;)
571	{	672	{
572	int j = k << 1;	673	int c = (k << 1) + 1;
573		674
574	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	675	if (c >= N)
575	++j;
576
577	if (w->at <= heap [j]->at)
578	break;	676	break;
579		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
580	heap [k] = heap [j];	684	heap [k] = heap [c];
581	((W)heap [k])->active = k + 1;	685	((W)heap [k])->active = k + 1;
		686
582	k = j;	687	k = c;
583	}	688	}
584		689
585	heap [k] = w;	690	heap [k] = w;
586	((W)heap [k])->active = k + 1;	691	((W)heap [k])->active = k + 1;
587	}	692	}
588		693
589	inline void	694	void inline_size
590	adjustheap (WT *heap, int N, int k)	695	adjustheap (WT *heap, int N, int k)
591	{	696	{
592	upheap (heap, k);	697	upheap (heap, k);
593	downheap (heap, N, k);	698	downheap (heap, N, k);
594	}	699	}
…		…
604	static ANSIG *signals;	709	static ANSIG *signals;
605	static int signalmax;	710	static int signalmax;
606		711
607	static int sigpipe [2];	712	static int sigpipe [2];
608	static sig_atomic_t volatile gotsig;	713	static sig_atomic_t volatile gotsig;
609	static struct ev_io sigev;	714	static ev_io sigev;
610		715
611	static void	716	void inline_size
612	signals_init (ANSIG *base, int count)	717	signals_init (ANSIG *base, int count)
613	{	718	{
614	while (count--)	719	while (count--)
615	{	720	{
616	base->head = 0;	721	base->head = 0;
…		…
636	write (sigpipe [1], &signum, 1);	741	write (sigpipe [1], &signum, 1);
637	errno = old_errno;	742	errno = old_errno;
638	}	743	}
639	}	744	}
640		745
641	void	746	void noinline
642	ev_feed_signal_event (EV_P_ int signum)	747	ev_feed_signal_event (EV_P_ int signum)
643	{	748	{
644	WL w;	749	WL w;
645		750
646	#if EV_MULTIPLICITY	751	#if EV_MULTIPLICITY
…		…
657	for (w = signals [signum].head; w; w = w->next)	762	for (w = signals [signum].head; w; w = w->next)
658	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	763	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
659	}	764	}
660		765
661	static void	766	static void
662	sigcb (EV_P_ struct ev_io *iow, int revents)	767	sigcb (EV_P_ ev_io *iow, int revents)
663	{	768	{
664	int signum;	769	int signum;
665		770
666	read (sigpipe [0], &revents, 1);	771	read (sigpipe [0], &revents, 1);
667	gotsig = 0;	772	gotsig = 0;
…		…
669	for (signum = signalmax; signum--; )	774	for (signum = signalmax; signum--; )
670	if (signals [signum].gotsig)	775	if (signals [signum].gotsig)
671	ev_feed_signal_event (EV_A_ signum + 1);	776	ev_feed_signal_event (EV_A_ signum + 1);
672	}	777	}
673		778
674	static void	779	void inline_speed
675	fd_intern (int fd)	780	fd_intern (int fd)
676	{	781	{
677	#ifdef _WIN32	782	#ifdef _WIN32
678	int arg = 1;	783	int arg = 1;
679	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	784	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
681	fcntl (fd, F_SETFD, FD_CLOEXEC);	786	fcntl (fd, F_SETFD, FD_CLOEXEC);
682	fcntl (fd, F_SETFL, O_NONBLOCK);	787	fcntl (fd, F_SETFL, O_NONBLOCK);
683	#endif	788	#endif
684	}	789	}
685		790
686	static void	791	static void noinline
687	siginit (EV_P)	792	siginit (EV_P)
688	{	793	{
689	fd_intern (sigpipe [0]);	794	fd_intern (sigpipe [0]);
690	fd_intern (sigpipe [1]);	795	fd_intern (sigpipe [1]);
691		796
…		…
694	ev_unref (EV_A); /* child watcher should not keep loop alive */	799	ev_unref (EV_A); /* child watcher should not keep loop alive */
695	}	800	}
696		801
697	/*****************************************************************************/	802	/*****************************************************************************/
698		803
699	static struct ev_child *childs [PID_HASHSIZE];	804	static WL childs [EV_PID_HASHSIZE];
700		805
701	#ifndef _WIN32	806	#ifndef _WIN32
702		807
703	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	}
704		824
705	#ifndef WCONTINUED	825	#ifndef WCONTINUED
706	# define WCONTINUED 0	826	# define WCONTINUED 0
707	#endif	827	#endif
708		828
709	static void	829	static void
710	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
711	{
712	struct ev_child *w;
713
714	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
715	if (w->pid == pid || !w->pid)
716	{
717	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
718	w->rpid = pid;
719	w->rstatus = status;
720	ev_feed_event (EV_A_ (W)w, EV_CHILD);
721	}
722	}
723
724	static void
725	childcb (EV_P_ struct ev_signal *sw, int revents)	830	childcb (EV_P_ ev_signal *sw, int revents)
726	{	831	{
727	int pid, status;	832	int pid, status;
728		833
		834	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
729	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	835	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
730	{	836	if (!WCONTINUED
		837	|| errno != EINVAL
		838	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		839	return;
		840
731	/* 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 */
		842	/* we need to do it this way so that the callback gets called before we continue */
732	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	843	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
733		844
734	child_reap (EV_A_ sw, pid, pid, status);	845	child_reap (EV_A_ sw, pid, pid, status);
		846	if (EV_PID_HASHSIZE > 1)
735	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	847	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
736	}
737	}	848	}
738		849
739	#endif	850	#endif
740		851
741	/*****************************************************************************/	852	/*****************************************************************************/
…		…
767	{	878	{
768	return EV_VERSION_MINOR;	879	return EV_VERSION_MINOR;
769	}	880	}
770		881
771	/* 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 */
772	static int	883	int inline_size
773	enable_secure (void)	884	enable_secure (void)
774	{	885	{
775	#ifdef _WIN32	886	#ifdef _WIN32
776	return 0;	887	return 0;
777	#else	888	#else
…		…
811		922
812	return flags;	923	return flags;
813	}	924	}
814		925
815	unsigned int	926	unsigned int
		927	ev_embeddable_backends (void)
		928	{
		929	return EVBACKEND_EPOLL
		930	| EVBACKEND_KQUEUE
		931	| EVBACKEND_PORT;
		932	}
		933
		934	unsigned int
816	ev_backend (EV_P)	935	ev_backend (EV_P)
817	{	936	{
818	return backend;	937	return backend;
819	}	938	}
820		939
821	static void	940	unsigned int
		941	ev_loop_count (EV_P)
		942	{
		943	return loop_count;
		944	}
		945
		946	static void noinline
822	loop_init (EV_P_ unsigned int flags)	947	loop_init (EV_P_ unsigned int flags)
823	{	948	{
824	if (!backend)	949	if (!backend)
825	{	950	{
826	#if EV_USE_MONOTONIC	951	#if EV_USE_MONOTONIC
…		…
834	ev_rt_now = ev_time ();	959	ev_rt_now = ev_time ();
835	mn_now = get_clock ();	960	mn_now = get_clock ();
836	now_floor = mn_now;	961	now_floor = mn_now;
837	rtmn_diff = ev_rt_now - mn_now;	962	rtmn_diff = ev_rt_now - mn_now;
838		963
		964	/* pid check not overridable via env */
		965	#ifndef _WIN32
		966	if (flags & EVFLAG_FORKCHECK)
		967	curpid = getpid ();
		968	#endif
		969
839	if (!(flags & EVFLAG_NOENV)	970	if (!(flags & EVFLAG_NOENV)
840	&& !enable_secure ()	971	&& !enable_secure ()
841	&& getenv ("LIBEV_FLAGS"))	972	&& getenv ("LIBEV_FLAGS"))
842	flags = atoi (getenv ("LIBEV_FLAGS"));	973	flags = atoi (getenv ("LIBEV_FLAGS"));
843		974
844	if (!(flags & 0x0000ffffUL))	975	if (!(flags & 0x0000ffffUL))
845	flags |= ev_recommended_backends ();	976	flags |= ev_recommended_backends ();
846		977
847	backend = 0;	978	backend = 0;
		979	backend_fd = -1;
		980	#if EV_USE_INOTIFY
		981	fs_fd = -2;
		982	#endif
		983
848	#if EV_USE_PORT	984	#if EV_USE_PORT
849	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	985	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
850	#endif	986	#endif
851	#if EV_USE_KQUEUE	987	#if EV_USE_KQUEUE
852	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	988	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
864	ev_init (&sigev, sigcb);	1000	ev_init (&sigev, sigcb);
865	ev_set_priority (&sigev, EV_MAXPRI);	1001	ev_set_priority (&sigev, EV_MAXPRI);
866	}	1002	}
867	}	1003	}
868		1004
869	static void	1005	static void noinline
870	loop_destroy (EV_P)	1006	loop_destroy (EV_P)
871	{	1007	{
872	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);
873		1017
874	#if EV_USE_PORT	1018	#if EV_USE_PORT
875	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1019	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
876	#endif	1020	#endif
877	#if EV_USE_KQUEUE	1021	#if EV_USE_KQUEUE
…		…
886	#if EV_USE_SELECT	1030	#if EV_USE_SELECT
887	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1031	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
888	#endif	1032	#endif
889		1033
890	for (i = NUMPRI; i--; )	1034	for (i = NUMPRI; i--; )
		1035	{
891	array_free (pending, [i]);	1036	array_free (pending, [i]);
		1037	#if EV_IDLE_ENABLE
		1038	array_free (idle, [i]);
		1039	#endif
		1040	}
892		1041
893	/* have to use the microsoft-never-gets-it-right macro */	1042	/* have to use the microsoft-never-gets-it-right macro */
894	array_free (fdchange, EMPTY0);	1043	array_free (fdchange, EMPTY);
895	array_free (timer, EMPTY0);	1044	array_free (timer, EMPTY);
896	#if EV_PERIODICS	1045	#if EV_PERIODIC_ENABLE
897	array_free (periodic, EMPTY0);	1046	array_free (periodic, EMPTY);
898	#endif	1047	#endif
899	array_free (idle, EMPTY0);
900	array_free (prepare, EMPTY0);	1048	array_free (prepare, EMPTY);
901	array_free (check, EMPTY0);	1049	array_free (check, EMPTY);
902		1050
903	backend = 0;	1051	backend = 0;
904	}	1052	}
905		1053
906	static void	1054	void inline_size infy_fork (EV_P);
		1055
		1056	void inline_size
907	loop_fork (EV_P)	1057	loop_fork (EV_P)
908	{	1058	{
909	#if EV_USE_PORT	1059	#if EV_USE_PORT
910	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1060	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
911	#endif	1061	#endif
912	#if EV_USE_KQUEUE	1062	#if EV_USE_KQUEUE
913	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1063	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
914	#endif	1064	#endif
915	#if EV_USE_EPOLL	1065	#if EV_USE_EPOLL
916	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);
917	#endif	1070	#endif
918		1071
919	if (ev_is_active (&sigev))	1072	if (ev_is_active (&sigev))
920	{	1073	{
921	/* default loop */	1074	/* default loop */
…		…
1037	postfork = 1;	1190	postfork = 1;
1038	}	1191	}
1039		1192
1040	/*****************************************************************************/	1193	/*****************************************************************************/
1041		1194
1042	static int	1195	void
1043	any_pending (EV_P)	1196	ev_invoke (EV_P_ void *w, int revents)
1044	{	1197	{
1045	int pri;	1198	EV_CB_INVOKE ((W)w, revents);
1046
1047	for (pri = NUMPRI; pri--; )
1048	if (pendingcnt [pri])
1049	return 1;
1050
1051	return 0;
1052	}	1199	}
1053		1200
1054	inline void	1201	void inline_speed
1055	call_pending (EV_P)	1202	call_pending (EV_P)
1056	{	1203	{
1057	int pri;	1204	int pri;
1058		1205
1059	for (pri = NUMPRI; pri--; )	1206	for (pri = NUMPRI; pri--; )
…		…
1061	{	1208	{
1062	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1209	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1063		1210
1064	if (expect_true (p->w))	1211	if (expect_true (p->w))
1065	{	1212	{
		1213	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1214
1066	p->w->pending = 0;	1215	p->w->pending = 0;
1067	EV_CB_INVOKE (p->w, p->events);	1216	EV_CB_INVOKE (p->w, p->events);
1068	}	1217	}
1069	}	1218	}
1070	}	1219	}
1071		1220
1072	inline void	1221	void inline_size
1073	timers_reify (EV_P)	1222	timers_reify (EV_P)
1074	{	1223	{
1075	while (timercnt && ((WT)timers [0])->at <= mn_now)	1224	while (timercnt && ((WT)timers [0])->at <= mn_now)
1076	{	1225	{
1077	struct ev_timer *w = timers [0];	1226	ev_timer *w = (ev_timer *)timers [0];
1078		1227
1079	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1228	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1080		1229
1081	/* first reschedule or stop timer */	1230	/* first reschedule or stop timer */
1082	if (w->repeat)	1231	if (w->repeat)
1083	{	1232	{
1084	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.));
1085		1234
1086	((WT)w)->at += w->repeat;	1235	((WT)w)->at += w->repeat;
1087	if (((WT)w)->at < mn_now)	1236	if (((WT)w)->at < mn_now)
1088	((WT)w)->at = mn_now;	1237	((WT)w)->at = mn_now;
1089		1238
1090	downheap ((WT *)timers, timercnt, 0);	1239	downheap (timers, timercnt, 0);
1091	}	1240	}
1092	else	1241	else
1093	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1242	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1094		1243
1095	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1244	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1096	}	1245	}
1097	}	1246	}
1098		1247
1099	#if EV_PERIODICS	1248	#if EV_PERIODIC_ENABLE
1100	inline void	1249	void inline_size
1101	periodics_reify (EV_P)	1250	periodics_reify (EV_P)
1102	{	1251	{
1103	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1252	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1104	{	1253	{
1105	struct ev_periodic *w = periodics [0];	1254	ev_periodic *w = (ev_periodic *)periodics [0];
1106		1255
1107	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1256	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1108		1257
1109	/* first reschedule or stop timer */	1258	/* first reschedule or stop timer */
1110	if (w->reschedule_cb)	1259	if (w->reschedule_cb)
1111	{	1260	{
1112	((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);
1113	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));
1114	downheap ((WT *)periodics, periodiccnt, 0);	1263	downheap (periodics, periodiccnt, 0);
1115	}	1264	}
1116	else if (w->interval)	1265	else if (w->interval)
1117	{	1266	{
1118	((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;
1119	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));
1120	downheap ((WT *)periodics, periodiccnt, 0);	1270	downheap (periodics, periodiccnt, 0);
1121	}	1271	}
1122	else	1272	else
1123	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1273	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1124		1274
1125	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1275	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1126	}	1276	}
1127	}	1277	}
1128		1278
1129	static void	1279	static void noinline
1130	periodics_reschedule (EV_P)	1280	periodics_reschedule (EV_P)
1131	{	1281	{
1132	int i;	1282	int i;
1133		1283
1134	/* adjust periodics after time jump */	1284	/* adjust periodics after time jump */
1135	for (i = 0; i < periodiccnt; ++i)	1285	for (i = 0; i < periodiccnt; ++i)
1136	{	1286	{
1137	struct ev_periodic *w = periodics [i];	1287	ev_periodic *w = (ev_periodic *)periodics [i];
1138		1288
1139	if (w->reschedule_cb)	1289	if (w->reschedule_cb)
1140	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1290	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1141	else if (w->interval)	1291	else if (w->interval)
1142	((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;
1143	}	1293	}
1144		1294
1145	/* now rebuild the heap */	1295	/* now rebuild the heap */
1146	for (i = periodiccnt >> 1; i--; )	1296	for (i = periodiccnt >> 1; i--; )
1147	downheap ((WT *)periodics, periodiccnt, i);	1297	downheap (periodics, periodiccnt, i);
1148	}	1298	}
1149	#endif	1299	#endif
1150		1300
1151	inline int	1301	#if EV_IDLE_ENABLE
1152	time_update_monotonic (EV_P)	1302	void inline_size
		1303	idle_reify (EV_P)
1153	{	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
1154	mn_now = get_clock ();	1334	mn_now = get_clock ();
1155		1335
		1336	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1337	/* interpolate in the meantime */
1156	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1338	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1157	{	1339	{
1158	ev_rt_now = rtmn_diff + mn_now;	1340	ev_rt_now = rtmn_diff + mn_now;
1159	return 0;	1341	return;
1160	}	1342	}
1161	else	1343
1162	{
1163	now_floor = mn_now;	1344	now_floor = mn_now;
1164	ev_rt_now = ev_time ();	1345	ev_rt_now = ev_time ();
1165	return 1;
1166	}
1167	}
1168		1346
1169	inline void	1347	/* loop a few times, before making important decisions.
1170	time_update (EV_P)	1348	* on the choice of "4": one iteration isn't enough,
1171	{	1349	* in case we get preempted during the calls to
1172	int i;	1350	* ev_time and get_clock. a second call is almost guaranteed
1173		1351	* to succeed in that case, though. and looping a few more times
1174	#if EV_USE_MONOTONIC	1352	* doesn't hurt either as we only do this on time-jumps or
1175	if (expect_true (have_monotonic))	1353	* in the unlikely event of having been preempted here.
1176	{	1354	*/
1177	if (time_update_monotonic (EV_A))	1355	for (i = 4; --i; )
1178	{	1356	{
1179	ev_tstamp odiff = rtmn_diff;
1180
1181	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1182	{
1183	rtmn_diff = ev_rt_now - mn_now;	1357	rtmn_diff = ev_rt_now - mn_now;
1184		1358
1185	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1359	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1186	return; /* all is well */	1360	return; /* all is well */
1187		1361
1188	ev_rt_now = ev_time ();	1362	ev_rt_now = ev_time ();
1189	mn_now = get_clock ();	1363	mn_now = get_clock ();
1190	now_floor = mn_now;	1364	now_floor = mn_now;
1191	}	1365	}
1192		1366
1193	# 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
1194	periodics_reschedule (EV_A);	1381	periodics_reschedule (EV_A);
1195	# endif	1382	#endif
1196	/* no timer adjustment, as the monotonic clock doesn't jump */
1197	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1198	}
1199	}
1200	else
1201	#endif
1202	{
1203	ev_rt_now = ev_time ();
1204
1205	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1206	{
1207	#if EV_PERIODICS
1208	periodics_reschedule (EV_A);
1209	#endif
1210
1211	/* 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 */
1212	for (i = 0; i < timercnt; ++i)	1384	for (i = 0; i < timercnt; ++i)
1213	((WT)timers [i])->at += ev_rt_now - mn_now;	1385	((WT)timers [i])->at += ev_rt_now - mn_now;
1214	}	1386	}
1215		1387
1216	mn_now = ev_rt_now;	1388	mn_now = ev_rt_now;
…		…
1232	static int loop_done;	1404	static int loop_done;
1233		1405
1234	void	1406	void
1235	ev_loop (EV_P_ int flags)	1407	ev_loop (EV_P_ int flags)
1236	{	1408	{
1237	double block;
1238	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1409	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1410	? EVUNLOOP_ONE
		1411	: EVUNLOOP_CANCEL;
1239		1412
1240	while (activecnt)	1413	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1414
		1415	do
1241	{	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
1242	/* queue check watchers (and execute them) */	1436	/* queue prepare watchers (and execute them) */
1243	if (expect_false (preparecnt))	1437	if (expect_false (preparecnt))
1244	{	1438	{
1245	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1439	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1246	call_pending (EV_A);	1440	call_pending (EV_A);
1247	}	1441	}
1248		1442
		1443	if (expect_false (!activecnt))
		1444	break;
		1445
1249	/* we might have forked, so reify kernel state if necessary */	1446	/* we might have forked, so reify kernel state if necessary */
1250	if (expect_false (postfork))	1447	if (expect_false (postfork))
1251	loop_fork (EV_A);	1448	loop_fork (EV_A);
1252		1449
1253	/* update fd-related kernel structures */	1450	/* update fd-related kernel structures */
1254	fd_reify (EV_A);	1451	fd_reify (EV_A);
1255		1452
1256	/* calculate blocking time */	1453	/* calculate blocking time */
		1454	{
		1455	ev_tstamp block;
1257		1456
1258	/* we only need this for !monotonic clock or timers, but as we basically	1457	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1259	always have timers, we just calculate it always */	1458	block = 0.; /* do not block at all */
1260	#if EV_USE_MONOTONIC
1261	if (expect_true (have_monotonic))
1262	time_update_monotonic (EV_A);
1263	else	1459	else
1264	#endif
1265	{	1460	{
1266	ev_rt_now = ev_time ();	1461	/* update time to cancel out callback processing overhead */
1267	mn_now = ev_rt_now;	1462	time_update (EV_A_ 1e100);
1268	}
1269		1463
1270	if (flags & EVLOOP_NONBLOCK || idlecnt)
1271	block = 0.;
1272	else
1273	{
1274	block = MAX_BLOCKTIME;	1464	block = MAX_BLOCKTIME;
1275		1465
1276	if (timercnt)	1466	if (timercnt)
1277	{	1467	{
1278	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1468	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1279	if (block > to) block = to;	1469	if (block > to) block = to;
1280	}	1470	}
1281		1471
1282	#if EV_PERIODICS	1472	#if EV_PERIODIC_ENABLE
1283	if (periodiccnt)	1473	if (periodiccnt)
1284	{	1474	{
1285	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;
1286	if (block > to) block = to;	1476	if (block > to) block = to;
1287	}	1477	}
1288	#endif	1478	#endif
1289		1479
1290	if (expect_false (block < 0.)) block = 0.;	1480	if (expect_false (block < 0.)) block = 0.;
1291	}	1481	}
1292		1482
		1483	++loop_count;
1293	backend_poll (EV_A_ block);	1484	backend_poll (EV_A_ block);
1294		1485
1295	/* update ev_rt_now, do magic */	1486	/* update ev_rt_now, do magic */
1296	time_update (EV_A);	1487	time_update (EV_A_ block);
		1488	}
1297		1489
1298	/* queue pending timers and reschedule them */	1490	/* queue pending timers and reschedule them */
1299	timers_reify (EV_A); /* relative timers called last */	1491	timers_reify (EV_A); /* relative timers called last */
1300	#if EV_PERIODICS	1492	#if EV_PERIODIC_ENABLE
1301	periodics_reify (EV_A); /* absolute timers called first */	1493	periodics_reify (EV_A); /* absolute timers called first */
1302	#endif	1494	#endif
1303		1495
		1496	#if EV_IDLE_ENABLE
1304	/* queue idle watchers unless io or timers are pending */	1497	/* queue idle watchers unless other events are pending */
1305	if (idlecnt && !any_pending (EV_A))	1498	idle_reify (EV_A);
1306	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1499	#endif
1307		1500
1308	/* queue check watchers, to be executed first */	1501	/* queue check watchers, to be executed first */
1309	if (expect_false (checkcnt))	1502	if (expect_false (checkcnt))
1310	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1503	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1311		1504
1312	call_pending (EV_A);	1505	call_pending (EV_A);
1313		1506
1314	if (expect_false (loop_done))
1315	break;
1316	}	1507	}
		1508	while (expect_true (activecnt && !loop_done));
1317		1509
1318	if (loop_done != 2)	1510	if (loop_done == EVUNLOOP_ONE)
1319	loop_done = 0;	1511	loop_done = EVUNLOOP_CANCEL;
1320	}	1512	}
1321		1513
1322	void	1514	void
1323	ev_unloop (EV_P_ int how)	1515	ev_unloop (EV_P_ int how)
1324	{	1516	{
1325	loop_done = how;	1517	loop_done = how;
1326	}	1518	}
1327		1519
1328	/*****************************************************************************/	1520	/*****************************************************************************/
1329		1521
1330	inline void	1522	void inline_size
1331	wlist_add (WL *head, WL elem)	1523	wlist_add (WL *head, WL elem)
1332	{	1524	{
1333	elem->next = *head;	1525	elem->next = *head;
1334	*head = elem;	1526	*head = elem;
1335	}	1527	}
1336		1528
1337	inline void	1529	void inline_size
1338	wlist_del (WL *head, WL elem)	1530	wlist_del (WL *head, WL elem)
1339	{	1531	{
1340	while (*head)	1532	while (*head)
1341	{	1533	{
1342	if (*head == elem)	1534	if (*head == elem)
…		…
1347		1539
1348	head = &(*head)->next;	1540	head = &(*head)->next;
1349	}	1541	}
1350	}	1542	}
1351		1543
1352	inline void	1544	void inline_speed
1353	ev_clear_pending (EV_P_ W w)	1545	clear_pending (EV_P_ W w)
1354	{	1546	{
1355	if (w->pending)	1547	if (w->pending)
1356	{	1548	{
1357	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1549	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1358	w->pending = 0;	1550	w->pending = 0;
1359	}	1551	}
1360	}	1552	}
1361		1553
1362	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
1363	ev_start (EV_P_ W w, int active)	1581	ev_start (EV_P_ W w, int active)
1364	{	1582	{
1365	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1583	pri_adjust (EV_A_ w);
1366	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1367
1368	w->active = active;	1584	w->active = active;
1369	ev_ref (EV_A);	1585	ev_ref (EV_A);
1370	}	1586	}
1371		1587
1372	inline void	1588	void inline_size
1373	ev_stop (EV_P_ W w)	1589	ev_stop (EV_P_ W w)
1374	{	1590	{
1375	ev_unref (EV_A);	1591	ev_unref (EV_A);
1376	w->active = 0;	1592	w->active = 0;
1377	}	1593	}
1378		1594
1379	/*****************************************************************************/	1595	/*****************************************************************************/
1380		1596
1381	void	1597	void noinline
1382	ev_io_start (EV_P_ struct ev_io *w)	1598	ev_io_start (EV_P_ ev_io *w)
1383	{	1599	{
1384	int fd = w->fd;	1600	int fd = w->fd;
1385		1601
1386	if (expect_false (ev_is_active (w)))	1602	if (expect_false (ev_is_active (w)))
1387	return;	1603	return;
1388		1604
1389	assert (("ev_io_start called with negative fd", fd >= 0));	1605	assert (("ev_io_start called with negative fd", fd >= 0));
1390		1606
1391	ev_start (EV_A_ (W)w, 1);	1607	ev_start (EV_A_ (W)w, 1);
1392	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1608	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1393	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1609	wlist_add (&anfds[fd].head, (WL)w);
1394		1610
1395	fd_change (EV_A_ fd);	1611	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1612	w->events &= ~EV_IOFDSET;
1396	}	1613	}
1397		1614
1398	void	1615	void noinline
1399	ev_io_stop (EV_P_ struct ev_io *w)	1616	ev_io_stop (EV_P_ ev_io *w)
1400	{	1617	{
1401	ev_clear_pending (EV_A_ (W)w);	1618	clear_pending (EV_A_ (W)w);
1402	if (expect_false (!ev_is_active (w)))	1619	if (expect_false (!ev_is_active (w)))
1403	return;	1620	return;
1404		1621
1405	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));
1406		1623
1407	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1624	wlist_del (&anfds[w->fd].head, (WL)w);
1408	ev_stop (EV_A_ (W)w);	1625	ev_stop (EV_A_ (W)w);
1409		1626
1410	fd_change (EV_A_ w->fd);	1627	fd_change (EV_A_ w->fd, 1);
1411	}	1628	}
1412		1629
1413	void	1630	void noinline
1414	ev_timer_start (EV_P_ struct ev_timer *w)	1631	ev_timer_start (EV_P_ ev_timer *w)
1415	{	1632	{
1416	if (expect_false (ev_is_active (w)))	1633	if (expect_false (ev_is_active (w)))
1417	return;	1634	return;
1418		1635
1419	((WT)w)->at += mn_now;	1636	((WT)w)->at += mn_now;
1420		1637
1421	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.));
1422		1639
1423	ev_start (EV_A_ (W)w, ++timercnt);	1640	ev_start (EV_A_ (W)w, ++timercnt);
1424	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);	1641	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1425	timers [timercnt - 1] = w;	1642	timers [timercnt - 1] = (WT)w;
1426	upheap ((WT *)timers, timercnt - 1);	1643	upheap (timers, timercnt - 1);
1427		1644
1428	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1645	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1429	}	1646	}
1430		1647
1431	void	1648	void noinline
1432	ev_timer_stop (EV_P_ struct ev_timer *w)	1649	ev_timer_stop (EV_P_ ev_timer *w)
1433	{	1650	{
1434	ev_clear_pending (EV_A_ (W)w);	1651	clear_pending (EV_A_ (W)w);
1435	if (expect_false (!ev_is_active (w)))	1652	if (expect_false (!ev_is_active (w)))
1436	return;	1653	return;
1437		1654
1438	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1655	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1439		1656
		1657	{
		1658	int active = ((W)w)->active;
		1659
1440	if (expect_true (((W)w)->active < timercnt--))	1660	if (expect_true (--active < --timercnt))
1441	{	1661	{
1442	timers [((W)w)->active - 1] = timers [timercnt];	1662	timers [active] = timers [timercnt];
1443	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1663	adjustheap (timers, timercnt, active);
1444	}	1664	}
		1665	}
1445		1666
1446	((WT)w)->at -= mn_now;	1667	((WT)w)->at -= mn_now;
1447		1668
1448	ev_stop (EV_A_ (W)w);	1669	ev_stop (EV_A_ (W)w);
1449	}	1670	}
1450		1671
1451	void	1672	void noinline
1452	ev_timer_again (EV_P_ struct ev_timer *w)	1673	ev_timer_again (EV_P_ ev_timer *w)
1453	{	1674	{
1454	if (ev_is_active (w))	1675	if (ev_is_active (w))
1455	{	1676	{
1456	if (w->repeat)	1677	if (w->repeat)
1457	{	1678	{
1458	((WT)w)->at = mn_now + w->repeat;	1679	((WT)w)->at = mn_now + w->repeat;
1459	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1680	adjustheap (timers, timercnt, ((W)w)->active - 1);
1460	}	1681	}
1461	else	1682	else
1462	ev_timer_stop (EV_A_ w);	1683	ev_timer_stop (EV_A_ w);
1463	}	1684	}
1464	else if (w->repeat)	1685	else if (w->repeat)
…		…
1466	w->at = w->repeat;	1687	w->at = w->repeat;
1467	ev_timer_start (EV_A_ w);	1688	ev_timer_start (EV_A_ w);
1468	}	1689	}
1469	}	1690	}
1470		1691
1471	#if EV_PERIODICS	1692	#if EV_PERIODIC_ENABLE
1472	void	1693	void noinline
1473	ev_periodic_start (EV_P_ struct ev_periodic *w)	1694	ev_periodic_start (EV_P_ ev_periodic *w)
1474	{	1695	{
1475	if (expect_false (ev_is_active (w)))	1696	if (expect_false (ev_is_active (w)))
1476	return;	1697	return;
1477		1698
1478	if (w->reschedule_cb)	1699	if (w->reschedule_cb)
1479	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1700	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1480	else if (w->interval)	1701	else if (w->interval)
1481	{	1702	{
1482	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.));
1483	/* 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 */
1484	((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;
1485	}	1706	}
		1707	else
		1708	((WT)w)->at = w->offset;
1486		1709
1487	ev_start (EV_A_ (W)w, ++periodiccnt);	1710	ev_start (EV_A_ (W)w, ++periodiccnt);
1488	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1711	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1489	periodics [periodiccnt - 1] = w;	1712	periodics [periodiccnt - 1] = (WT)w;
1490	upheap ((WT *)periodics, periodiccnt - 1);	1713	upheap (periodics, periodiccnt - 1);
1491		1714
1492	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1715	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1493	}	1716	}
1494		1717
1495	void	1718	void noinline
1496	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1719	ev_periodic_stop (EV_P_ ev_periodic *w)
1497	{	1720	{
1498	ev_clear_pending (EV_A_ (W)w);	1721	clear_pending (EV_A_ (W)w);
1499	if (expect_false (!ev_is_active (w)))	1722	if (expect_false (!ev_is_active (w)))
1500	return;	1723	return;
1501		1724
1502	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1725	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1503		1726
		1727	{
		1728	int active = ((W)w)->active;
		1729
1504	if (expect_true (((W)w)->active < periodiccnt--))	1730	if (expect_true (--active < --periodiccnt))
1505	{	1731	{
1506	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1732	periodics [active] = periodics [periodiccnt];
1507	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1733	adjustheap (periodics, periodiccnt, active);
1508	}	1734	}
		1735	}
1509		1736
1510	ev_stop (EV_A_ (W)w);	1737	ev_stop (EV_A_ (W)w);
1511	}	1738	}
1512		1739
1513	void	1740	void noinline
1514	ev_periodic_again (EV_P_ struct ev_periodic *w)	1741	ev_periodic_again (EV_P_ ev_periodic *w)
1515	{	1742	{
1516	/* TODO: use adjustheap and recalculation */	1743	/* TODO: use adjustheap and recalculation */
1517	ev_periodic_stop (EV_A_ w);	1744	ev_periodic_stop (EV_A_ w);
1518	ev_periodic_start (EV_A_ w);	1745	ev_periodic_start (EV_A_ w);
1519	}	1746	}
1520	#endif	1747	#endif
1521		1748
1522	void
1523	ev_idle_start (EV_P_ struct ev_idle *w)
1524	{
1525	if (expect_false (ev_is_active (w)))
1526	return;
1527
1528	ev_start (EV_A_ (W)w, ++idlecnt);
1529	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1530	idles [idlecnt - 1] = w;
1531	}
1532
1533	void
1534	ev_idle_stop (EV_P_ struct ev_idle *w)
1535	{
1536	ev_clear_pending (EV_A_ (W)w);
1537	if (expect_false (!ev_is_active (w)))
1538	return;
1539
1540	idles [((W)w)->active - 1] = idles [--idlecnt];
1541	ev_stop (EV_A_ (W)w);
1542	}
1543
1544	void
1545	ev_prepare_start (EV_P_ struct ev_prepare *w)
1546	{
1547	if (expect_false (ev_is_active (w)))
1548	return;
1549
1550	ev_start (EV_A_ (W)w, ++preparecnt);
1551	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1552	prepares [preparecnt - 1] = w;
1553	}
1554
1555	void
1556	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1557	{
1558	ev_clear_pending (EV_A_ (W)w);
1559	if (expect_false (!ev_is_active (w)))
1560	return;
1561
1562	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1563	ev_stop (EV_A_ (W)w);
1564	}
1565
1566	void
1567	ev_check_start (EV_P_ struct ev_check *w)
1568	{
1569	if (expect_false (ev_is_active (w)))
1570	return;
1571
1572	ev_start (EV_A_ (W)w, ++checkcnt);
1573	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1574	checks [checkcnt - 1] = w;
1575	}
1576
1577	void
1578	ev_check_stop (EV_P_ struct ev_check *w)
1579	{
1580	ev_clear_pending (EV_A_ (W)w);
1581	if (expect_false (!ev_is_active (w)))
1582	return;
1583
1584	checks [((W)w)->active - 1] = checks [--checkcnt];
1585	ev_stop (EV_A_ (W)w);
1586	}
1587
1588	#ifndef SA_RESTART	1749	#ifndef SA_RESTART
1589	# define SA_RESTART 0	1750	# define SA_RESTART 0
1590	#endif	1751	#endif
1591		1752
1592	void	1753	void noinline
1593	ev_signal_start (EV_P_ struct ev_signal *w)	1754	ev_signal_start (EV_P_ ev_signal *w)
1594	{	1755	{
1595	#if EV_MULTIPLICITY	1756	#if EV_MULTIPLICITY
1596	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));
1597	#endif	1758	#endif
1598	if (expect_false (ev_is_active (w)))	1759	if (expect_false (ev_is_active (w)))
1599	return;	1760	return;
1600		1761
1601	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));
1602		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
1603	ev_start (EV_A_ (W)w, 1);	1778	ev_start (EV_A_ (W)w, 1);
1604	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1605	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1779	wlist_add (&signals [w->signum - 1].head, (WL)w);
1606		1780
1607	if (!((WL)w)->next)	1781	if (!((WL)w)->next)
1608	{	1782	{
1609	#if _WIN32	1783	#if _WIN32
1610	signal (w->signum, sighandler);	1784	signal (w->signum, sighandler);
…		…
1616	sigaction (w->signum, &sa, 0);	1790	sigaction (w->signum, &sa, 0);
1617	#endif	1791	#endif
1618	}	1792	}
1619	}	1793	}
1620		1794
1621	void	1795	void noinline
1622	ev_signal_stop (EV_P_ struct ev_signal *w)	1796	ev_signal_stop (EV_P_ ev_signal *w)
1623	{	1797	{
1624	ev_clear_pending (EV_A_ (W)w);	1798	clear_pending (EV_A_ (W)w);
1625	if (expect_false (!ev_is_active (w)))	1799	if (expect_false (!ev_is_active (w)))
1626	return;	1800	return;
1627		1801
1628	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1802	wlist_del (&signals [w->signum - 1].head, (WL)w);
1629	ev_stop (EV_A_ (W)w);	1803	ev_stop (EV_A_ (W)w);
1630		1804
1631	if (!signals [w->signum - 1].head)	1805	if (!signals [w->signum - 1].head)
1632	signal (w->signum, SIG_DFL);	1806	signal (w->signum, SIG_DFL);
1633	}	1807	}
1634		1808
1635	void	1809	void
1636	ev_child_start (EV_P_ struct ev_child *w)	1810	ev_child_start (EV_P_ ev_child *w)
1637	{	1811	{
1638	#if EV_MULTIPLICITY	1812	#if EV_MULTIPLICITY
1639	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));
1640	#endif	1814	#endif
1641	if (expect_false (ev_is_active (w)))	1815	if (expect_false (ev_is_active (w)))
1642	return;	1816	return;
1643		1817
1644	ev_start (EV_A_ (W)w, 1);	1818	ev_start (EV_A_ (W)w, 1);
1645	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1819	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1646	}	1820	}
1647		1821
1648	void	1822	void
1649	ev_child_stop (EV_P_ struct ev_child *w)	1823	ev_child_stop (EV_P_ ev_child *w)
1650	{	1824	{
1651	ev_clear_pending (EV_A_ (W)w);	1825	clear_pending (EV_A_ (W)w);
1652	if (expect_false (!ev_is_active (w)))	1826	if (expect_false (!ev_is_active (w)))
1653	return;	1827	return;
1654		1828
1655	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1829	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1656	ev_stop (EV_A_ (W)w);	1830	ev_stop (EV_A_ (W)w);
1657	}	1831	}
1658		1832
		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
		1933	static void
		1934	infy_cb (EV_P_ ev_io *w, int revents)
		1935	{
		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));
		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
		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	{
		2181	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2182	}
		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
		2195	void
		2196	ev_embed_start (EV_P_ ev_embed *w)
		2197	{
		2198	if (expect_false (ev_is_active (w)))
		2199	return;
		2200
		2201	{
		2202	struct ev_loop *loop = w->loop;
		2203	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2204	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2205	}
		2206
		2207	ev_set_priority (&w->io, ev_priority (w));
		2208	ev_io_start (EV_A_ &w->io);
		2209
		2210	ev_start (EV_A_ (W)w, 1);
		2211	}
		2212
		2213	void
		2214	ev_embed_stop (EV_P_ ev_embed *w)
		2215	{
		2216	clear_pending (EV_A_ (W)w);
		2217	if (expect_false (!ev_is_active (w)))
		2218	return;
		2219
		2220	ev_io_stop (EV_A_ &w->io);
		2221
		2222	ev_stop (EV_A_ (W)w);
		2223	}
		2224	#endif
		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
1659	/*****************************************************************************/	2255	/*****************************************************************************/
1660		2256
1661	struct ev_once	2257	struct ev_once
1662	{	2258	{
1663	struct ev_io io;	2259	ev_io io;
1664	struct ev_timer to;	2260	ev_timer to;
1665	void (*cb)(int revents, void *arg);	2261	void (*cb)(int revents, void *arg);
1666	void *arg;	2262	void *arg;
1667	};	2263	};
1668		2264
1669	static void	2265	static void
…		…
1678		2274
1679	cb (revents, arg);	2275	cb (revents, arg);
1680	}	2276	}
1681		2277
1682	static void	2278	static void
1683	once_cb_io (EV_P_ struct ev_io *w, int revents)	2279	once_cb_io (EV_P_ ev_io *w, int revents)
1684	{	2280	{
1685	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);
1686	}	2282	}
1687		2283
1688	static void	2284	static void
1689	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2285	once_cb_to (EV_P_ ev_timer *w, int revents)
1690	{	2286	{
1691	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);
1692	}	2288	}
1693		2289
1694	void	2290	void

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