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Comparing libev/ev.c (file contents):
Revision 1.127 by root, Sun Nov 18 02:17:57 2007 UTC vs.
Revision 1.178 by root, Tue Dec 11 18:36:11 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
159	/* darwin simply cannot be helped */
160	#ifdef __APPLE__
161	# undef EV_USE_POLL
162	# undef EV_USE_KQUEUE
163	#endif
164		196
165	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
166	# undef EV_USE_MONOTONIC	198	# undef EV_USE_MONOTONIC
167	# define EV_USE_MONOTONIC 0	199	# define EV_USE_MONOTONIC 0
168	#endif	200	#endif
…		…
174		206
175	#if EV_SELECT_IS_WINSOCKET	207	#if EV_SELECT_IS_WINSOCKET
176	# include <winsock.h>	208	# include <winsock.h>
177	#endif	209	#endif
178		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
179	/**/	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 */
180		230
181	#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) */
182	#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) */
183	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
184	/*#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 */
185
186	#ifdef EV_H
187	# include EV_H
188	#else
189	# include "ev.h"
190	#endif
191		234
192	#if __GNUC__ >= 3	235	#if __GNUC__ >= 3
193	# define expect(expr,value) __builtin_expect ((expr),(value))	236	# define expect(expr,value) __builtin_expect ((expr),(value))
194	# define inline static inline	237	# define noinline __attribute__ ((noinline))
195	#else	238	#else
196	# define expect(expr,value) (expr)	239	# define expect(expr,value) (expr)
197	# define inline static	240	# define noinline
		241	# if __STDC_VERSION__ < 199901L
		242	# define inline
		243	# endif
198	#endif	244	#endif
199		245
200	#define expect_false(expr) expect ((expr) != 0, 0)	246	#define expect_false(expr) expect ((expr) != 0, 0)
201	#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
202		255
203	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	256	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
204	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	257	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
205		258
206	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	259	#define EMPTY /* required for microsofts broken pseudo-c compiler */
207	#define EMPTY2(a,b) /* used to suppress some warnings */	260	#define EMPTY2(a,b) /* used to suppress some warnings */
208		261
209	typedef struct ev_watcher *W;	262	typedef ev_watcher *W;
210	typedef struct ev_watcher_list *WL;	263	typedef ev_watcher_list *WL;
211	typedef struct ev_watcher_time *WT;	264	typedef ev_watcher_time *WT;
212		265
213	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	266	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
214		267
215	#ifdef _WIN32	268	#ifdef _WIN32
216	# include "ev_win32.c"	269	# include "ev_win32.c"
…		…
218		271
219	/*****************************************************************************/	272	/*****************************************************************************/
220		273
221	static void (*syserr_cb)(const char *msg);	274	static void (*syserr_cb)(const char *msg);
222		275
		276	void
223	void ev_set_syserr_cb (void (*cb)(const char *msg))	277	ev_set_syserr_cb (void (*cb)(const char *msg))
224	{	278	{
225	syserr_cb = cb;	279	syserr_cb = cb;
226	}	280	}
227		281
228	static void	282	static void noinline
229	syserr (const char *msg)	283	syserr (const char *msg)
230	{	284	{
231	if (!msg)	285	if (!msg)
232	msg = "(libev) system error";	286	msg = "(libev) system error";
233		287
…		…
240	}	294	}
241	}	295	}
242		296
243	static void *(*alloc)(void *ptr, long size);	297	static void *(*alloc)(void *ptr, long size);
244		298
		299	void
245	void ev_set_allocator (void *(*cb)(void *ptr, long size))	300	ev_set_allocator (void *(*cb)(void *ptr, long size))
246	{	301	{
247	alloc = cb;	302	alloc = cb;
248	}	303	}
249		304
250	static void *	305	inline_speed void *
251	ev_realloc (void *ptr, long size)	306	ev_realloc (void *ptr, long size)
252	{	307	{
253	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
254		309
255	if (!ptr && size)	310	if (!ptr && size)
…		…
279	typedef struct	334	typedef struct
280	{	335	{
281	W w;	336	W w;
282	int events;	337	int events;
283	} ANPENDING;	338	} ANPENDING;
		339
		340	#if EV_USE_INOTIFY
		341	typedef struct
		342	{
		343	WL head;
		344	} ANFS;
		345	#endif
284		346
285	#if EV_MULTIPLICITY	347	#if EV_MULTIPLICITY
286		348
287	struct ev_loop	349	struct ev_loop
288	{	350	{
…		…
322	gettimeofday (&tv, 0);	384	gettimeofday (&tv, 0);
323	return tv.tv_sec + tv.tv_usec * 1e-6;	385	return tv.tv_sec + tv.tv_usec * 1e-6;
324	#endif	386	#endif
325	}	387	}
326		388
327	inline ev_tstamp	389	ev_tstamp inline_size
328	get_clock (void)	390	get_clock (void)
329	{	391	{
330	#if EV_USE_MONOTONIC	392	#if EV_USE_MONOTONIC
331	if (expect_true (have_monotonic))	393	if (expect_true (have_monotonic))
332	{	394	{
…		…
345	{	407	{
346	return ev_rt_now;	408	return ev_rt_now;
347	}	409	}
348	#endif	410	#endif
349		411
350	#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	}
351		439
352	#define array_needsize(type,base,cur,cnt,init) \	440	#define array_needsize(type,base,cur,cnt,init) \
353	if (expect_false ((cnt) > cur)) \	441	if (expect_false ((cnt) > (cur))) \
354	{ \	442	{ \
355	int newcnt = cur; \	443	int ocur_ = (cur); \
356	do \	444	(base) = (type *)array_realloc \
357	{ \	445	(sizeof (type), (base), &(cur), (cnt)); \
358	newcnt = array_roundsize (type, newcnt << 1); \	446	init ((base) + (ocur_), (cur) - ocur_); \
359	} \
360	while ((cnt) > newcnt); \
361	\
362	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
363	init (base + cur, newcnt - cur); \
364	cur = newcnt; \
365	}	447	}
366		448
		449	#if 0
367	#define array_slim(type,stem) \	450	#define array_slim(type,stem) \
368	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	451	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
369	{ \	452	{ \
370	stem ## max = array_roundsize (stem ## cnt >> 1); \	453	stem ## max = array_roundsize (stem ## cnt >> 1); \
371	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	454	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
372	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	455	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
373	}	456	}
		457	#endif
374		458
375	#define array_free(stem, idx) \	459	#define array_free(stem, idx) \
376	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;
377		461
378	/*****************************************************************************/	462	/*****************************************************************************/
379		463
380	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_size
		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
381	anfds_init (ANFD *base, int count)	493	anfds_init (ANFD *base, int count)
382	{	494	{
383	while (count--)	495	while (count--)
384	{	496	{
385	base->head = 0;	497	base->head = 0;
…		…
388		500
389	++base;	501	++base;
390	}	502	}
391	}	503	}
392		504
393	void	505	void inline_speed
394	ev_feed_event (EV_P_ void *w, int revents)
395	{
396	W w_ = (W)w;
397
398	if (expect_false (w_->pending))
399	{
400	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
401	return;
402	}
403
404	w_->pending = ++pendingcnt [ABSPRI (w_)];
405	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
406	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
407	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
408	}
409
410	static void
411	queue_events (EV_P_ W *events, int eventcnt, int type)
412	{
413	int i;
414
415	for (i = 0; i < eventcnt; ++i)
416	ev_feed_event (EV_A_ events [i], type);
417	}
418
419	inline void
420	fd_event (EV_P_ int fd, int revents)	506	fd_event (EV_P_ int fd, int revents)
421	{	507	{
422	ANFD *anfd = anfds + fd;	508	ANFD *anfd = anfds + fd;
423	struct ev_io *w;	509	ev_io *w;
424		510
425	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)
426	{	512	{
427	int ev = w->events & revents;	513	int ev = w->events & revents;
428		514
429	if (ev)	515	if (ev)
430	ev_feed_event (EV_A_ (W)w, ev);	516	ev_feed_event (EV_A_ (W)w, ev);
…		…
432	}	518	}
433		519
434	void	520	void
435	ev_feed_fd_event (EV_P_ int fd, int revents)	521	ev_feed_fd_event (EV_P_ int fd, int revents)
436	{	522	{
		523	if (fd >= 0 && fd < anfdmax)
437	fd_event (EV_A_ fd, revents);	524	fd_event (EV_A_ fd, revents);
438	}	525	}
439		526
440	/*****************************************************************************/	527	void inline_size
441
442	inline void
443	fd_reify (EV_P)	528	fd_reify (EV_P)
444	{	529	{
445	int i;	530	int i;
446		531
447	for (i = 0; i < fdchangecnt; ++i)	532	for (i = 0; i < fdchangecnt; ++i)
448	{	533	{
449	int fd = fdchanges [i];	534	int fd = fdchanges [i];
450	ANFD *anfd = anfds + fd;	535	ANFD *anfd = anfds + fd;
451	struct ev_io *w;	536	ev_io *w;
452		537
453	int events = 0;	538	int events = 0;
454		539
455	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)
456	events |= w->events;	541	events |= w->events;
457		542
458	#if EV_SELECT_IS_WINSOCKET	543	#if EV_SELECT_IS_WINSOCKET
459	if (events)	544	if (events)
460	{	545	{
…		…
464	}	549	}
465	#endif	550	#endif
466		551
467	anfd->reify = 0;	552	anfd->reify = 0;
468		553
469	method_modify (EV_A_ fd, anfd->events, events);	554	backend_modify (EV_A_ fd, anfd->events, events);
470	anfd->events = events;	555	anfd->events = events;
471	}	556	}
472		557
473	fdchangecnt = 0;	558	fdchangecnt = 0;
474	}	559	}
475		560
476	static void	561	void inline_size
477	fd_change (EV_P_ int fd)	562	fd_change (EV_P_ int fd)
478	{	563	{
479	if (expect_false (anfds [fd].reify))	564	if (expect_false (anfds [fd].reify))
480	return;	565	return;
481		566
…		…
484	++fdchangecnt;	569	++fdchangecnt;
485	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
486	fdchanges [fdchangecnt - 1] = fd;	571	fdchanges [fdchangecnt - 1] = fd;
487	}	572	}
488		573
489	static void	574	void inline_speed
490	fd_kill (EV_P_ int fd)	575	fd_kill (EV_P_ int fd)
491	{	576	{
492	struct ev_io *w;	577	ev_io *w;
493		578
494	while ((w = (struct ev_io *)anfds [fd].head))	579	while ((w = (ev_io *)anfds [fd].head))
495	{	580	{
496	ev_io_stop (EV_A_ w);	581	ev_io_stop (EV_A_ w);
497	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	582	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
498	}	583	}
499	}	584	}
500		585
501	inline int	586	int inline_size
502	fd_valid (int fd)	587	fd_valid (int fd)
503	{	588	{
504	#ifdef _WIN32	589	#ifdef _WIN32
505	return _get_osfhandle (fd) != -1;	590	return _get_osfhandle (fd) != -1;
506	#else	591	#else
507	return fcntl (fd, F_GETFD) != -1;	592	return fcntl (fd, F_GETFD) != -1;
508	#endif	593	#endif
509	}	594	}
510		595
511	/* called on EBADF to verify fds */	596	/* called on EBADF to verify fds */
512	static void	597	static void noinline
513	fd_ebadf (EV_P)	598	fd_ebadf (EV_P)
514	{	599	{
515	int fd;	600	int fd;
516		601
517	for (fd = 0; fd < anfdmax; ++fd)	602	for (fd = 0; fd < anfdmax; ++fd)
…		…
519	if (!fd_valid (fd) == -1 && errno == EBADF)	604	if (!fd_valid (fd) == -1 && errno == EBADF)
520	fd_kill (EV_A_ fd);	605	fd_kill (EV_A_ fd);
521	}	606	}
522		607
523	/* called on ENOMEM in select/poll to kill some fds and retry */	608	/* called on ENOMEM in select/poll to kill some fds and retry */
524	static void	609	static void noinline
525	fd_enomem (EV_P)	610	fd_enomem (EV_P)
526	{	611	{
527	int fd;	612	int fd;
528		613
529	for (fd = anfdmax; fd--; )	614	for (fd = anfdmax; fd--; )
…		…
532	fd_kill (EV_A_ fd);	617	fd_kill (EV_A_ fd);
533	return;	618	return;
534	}	619	}
535	}	620	}
536		621
537	/* usually called after fork if method needs to re-arm all fds from scratch */	622	/* usually called after fork if backend needs to re-arm all fds from scratch */
538	static void	623	static void noinline
539	fd_rearm_all (EV_P)	624	fd_rearm_all (EV_P)
540	{	625	{
541	int fd;	626	int fd;
542		627
543	/* this should be highly optimised to not do anything but set a flag */
544	for (fd = 0; fd < anfdmax; ++fd)	628	for (fd = 0; fd < anfdmax; ++fd)
545	if (anfds [fd].events)	629	if (anfds [fd].events)
546	{	630	{
547	anfds [fd].events = 0;	631	anfds [fd].events = 0;
548	fd_change (EV_A_ fd);	632	fd_change (EV_A_ fd);
549	}	633	}
550	}	634	}
551		635
552	/*****************************************************************************/	636	/*****************************************************************************/
553		637
554	static void	638	void inline_speed
555	upheap (WT *heap, int k)	639	upheap (WT *heap, int k)
556	{	640	{
557	WT w = heap [k];	641	WT w = heap [k];
558		642
559	while (k && heap [k >> 1]->at > w->at)	643	while (k && heap [k >> 1]->at > w->at)
…		…
566	heap [k] = w;	650	heap [k] = w;
567	((W)heap [k])->active = k + 1;	651	((W)heap [k])->active = k + 1;
568		652
569	}	653	}
570		654
571	static void	655	void inline_speed
572	downheap (WT *heap, int N, int k)	656	downheap (WT *heap, int N, int k)
573	{	657	{
574	WT w = heap [k];	658	WT w = heap [k];
575		659
576	while (k < (N >> 1))	660	while (k < (N >> 1))
…		…
590		674
591	heap [k] = w;	675	heap [k] = w;
592	((W)heap [k])->active = k + 1;	676	((W)heap [k])->active = k + 1;
593	}	677	}
594		678
595	inline void	679	void inline_size
596	adjustheap (WT *heap, int N, int k)	680	adjustheap (WT *heap, int N, int k)
597	{	681	{
598	upheap (heap, k);	682	upheap (heap, k);
599	downheap (heap, N, k);	683	downheap (heap, N, k);
600	}	684	}
…		…
610	static ANSIG *signals;	694	static ANSIG *signals;
611	static int signalmax;	695	static int signalmax;
612		696
613	static int sigpipe [2];	697	static int sigpipe [2];
614	static sig_atomic_t volatile gotsig;	698	static sig_atomic_t volatile gotsig;
615	static struct ev_io sigev;	699	static ev_io sigev;
616		700
617	static void	701	void inline_size
618	signals_init (ANSIG *base, int count)	702	signals_init (ANSIG *base, int count)
619	{	703	{
620	while (count--)	704	while (count--)
621	{	705	{
622	base->head = 0;	706	base->head = 0;
…		…
642	write (sigpipe [1], &signum, 1);	726	write (sigpipe [1], &signum, 1);
643	errno = old_errno;	727	errno = old_errno;
644	}	728	}
645	}	729	}
646		730
647	void	731	void noinline
648	ev_feed_signal_event (EV_P_ int signum)	732	ev_feed_signal_event (EV_P_ int signum)
649	{	733	{
650	WL w;	734	WL w;
651		735
652	#if EV_MULTIPLICITY	736	#if EV_MULTIPLICITY
…		…
663	for (w = signals [signum].head; w; w = w->next)	747	for (w = signals [signum].head; w; w = w->next)
664	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	748	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
665	}	749	}
666		750
667	static void	751	static void
668	sigcb (EV_P_ struct ev_io *iow, int revents)	752	sigcb (EV_P_ ev_io *iow, int revents)
669	{	753	{
670	int signum;	754	int signum;
671		755
672	read (sigpipe [0], &revents, 1);	756	read (sigpipe [0], &revents, 1);
673	gotsig = 0;	757	gotsig = 0;
…		…
675	for (signum = signalmax; signum--; )	759	for (signum = signalmax; signum--; )
676	if (signals [signum].gotsig)	760	if (signals [signum].gotsig)
677	ev_feed_signal_event (EV_A_ signum + 1);	761	ev_feed_signal_event (EV_A_ signum + 1);
678	}	762	}
679		763
680	static void	764	void inline_speed
681	fd_intern (int fd)	765	fd_intern (int fd)
682	{	766	{
683	#ifdef _WIN32	767	#ifdef _WIN32
684	int arg = 1;	768	int arg = 1;
685	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	769	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
687	fcntl (fd, F_SETFD, FD_CLOEXEC);	771	fcntl (fd, F_SETFD, FD_CLOEXEC);
688	fcntl (fd, F_SETFL, O_NONBLOCK);	772	fcntl (fd, F_SETFL, O_NONBLOCK);
689	#endif	773	#endif
690	}	774	}
691		775
692	static void	776	static void noinline
693	siginit (EV_P)	777	siginit (EV_P)
694	{	778	{
695	fd_intern (sigpipe [0]);	779	fd_intern (sigpipe [0]);
696	fd_intern (sigpipe [1]);	780	fd_intern (sigpipe [1]);
697		781
…		…
700	ev_unref (EV_A); /* child watcher should not keep loop alive */	784	ev_unref (EV_A); /* child watcher should not keep loop alive */
701	}	785	}
702		786
703	/*****************************************************************************/	787	/*****************************************************************************/
704		788
705	static struct ev_child *childs [PID_HASHSIZE];	789	static ev_child *childs [EV_PID_HASHSIZE];
706		790
707	#ifndef _WIN32	791	#ifndef _WIN32
708		792
709	static struct ev_signal childev;	793	static ev_signal childev;
		794
		795	void inline_speed
		796	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		797	{
		798	ev_child *w;
		799
		800	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		801	if (w->pid == pid || !w->pid)
		802	{
		803	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		804	w->rpid = pid;
		805	w->rstatus = status;
		806	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		807	}
		808	}
710		809
711	#ifndef WCONTINUED	810	#ifndef WCONTINUED
712	# define WCONTINUED 0	811	# define WCONTINUED 0
713	#endif	812	#endif
714		813
715	static void	814	static void
716	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
717	{
718	struct ev_child *w;
719
720	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
721	if (w->pid == pid || !w->pid)
722	{
723	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
724	w->rpid = pid;
725	w->rstatus = status;
726	ev_feed_event (EV_A_ (W)w, EV_CHILD);
727	}
728	}
729
730	static void
731	childcb (EV_P_ struct ev_signal *sw, int revents)	815	childcb (EV_P_ ev_signal *sw, int revents)
732	{	816	{
733	int pid, status;	817	int pid, status;
734		818
		819	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
735	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	820	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
736	{	821	if (!WCONTINUED
		822	|| errno != EINVAL
		823	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		824	return;
		825
737	/* make sure we are called again until all childs have been reaped */	826	/* make sure we are called again until all childs have been reaped */
		827	/* we need to do it this way so that the callback gets called before we continue */
738	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	828	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
739		829
740	child_reap (EV_A_ sw, pid, pid, status);	830	child_reap (EV_A_ sw, pid, pid, status);
		831	if (EV_PID_HASHSIZE > 1)
741	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	832	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
742	}
743	}	833	}
744		834
745	#endif	835	#endif
746		836
747	/*****************************************************************************/	837	/*****************************************************************************/
…		…
773	{	863	{
774	return EV_VERSION_MINOR;	864	return EV_VERSION_MINOR;
775	}	865	}
776		866
777	/* return true if we are running with elevated privileges and should ignore env variables */	867	/* return true if we are running with elevated privileges and should ignore env variables */
778	static int	868	int inline_size
779	enable_secure (void)	869	enable_secure (void)
780	{	870	{
781	#ifdef _WIN32	871	#ifdef _WIN32
782	return 0;	872	return 0;
783	#else	873	#else
…		…
785	|| getgid () != getegid ();	875	|| getgid () != getegid ();
786	#endif	876	#endif
787	}	877	}
788		878
789	unsigned int	879	unsigned int
790	ev_method (EV_P)	880	ev_supported_backends (void)
791	{	881	{
792	return method;	882	unsigned int flags = 0;
793	}
794		883
795	static void	884	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		885	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		886	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		887	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		888	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		889
		890	return flags;
		891	}
		892
		893	unsigned int
		894	ev_recommended_backends (void)
		895	{
		896	unsigned int flags = ev_supported_backends ();
		897
		898	#ifndef __NetBSD__
		899	/* kqueue is borked on everything but netbsd apparently */
		900	/* it usually doesn't work correctly on anything but sockets and pipes */
		901	flags &= ~EVBACKEND_KQUEUE;
		902	#endif
		903	#ifdef __APPLE__
		904	// flags &= ~EVBACKEND_KQUEUE; for documentation
		905	flags &= ~EVBACKEND_POLL;
		906	#endif
		907
		908	return flags;
		909	}
		910
		911	unsigned int
		912	ev_embeddable_backends (void)
		913	{
		914	return EVBACKEND_EPOLL
		915	| EVBACKEND_KQUEUE
		916	| EVBACKEND_PORT;
		917	}
		918
		919	unsigned int
		920	ev_backend (EV_P)
		921	{
		922	return backend;
		923	}
		924
		925	unsigned int
		926	ev_loop_count (EV_P)
		927	{
		928	return loop_count;
		929	}
		930
		931	static void noinline
796	loop_init (EV_P_ unsigned int flags)	932	loop_init (EV_P_ unsigned int flags)
797	{	933	{
798	if (!method)	934	if (!backend)
799	{	935	{
800	#if EV_USE_MONOTONIC	936	#if EV_USE_MONOTONIC
801	{	937	{
802	struct timespec ts;	938	struct timespec ts;
803	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	939	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
808	ev_rt_now = ev_time ();	944	ev_rt_now = ev_time ();
809	mn_now = get_clock ();	945	mn_now = get_clock ();
810	now_floor = mn_now;	946	now_floor = mn_now;
811	rtmn_diff = ev_rt_now - mn_now;	947	rtmn_diff = ev_rt_now - mn_now;
812		948
813	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))	949	/* pid check not overridable via env */
		950	#ifndef _WIN32
		951	if (flags & EVFLAG_FORKCHECK)
		952	curpid = getpid ();
		953	#endif
		954
		955	if (!(flags & EVFLAG_NOENV)
		956	&& !enable_secure ()
		957	&& getenv ("LIBEV_FLAGS"))
814	flags = atoi (getenv ("LIBEV_FLAGS"));	958	flags = atoi (getenv ("LIBEV_FLAGS"));
815		959
816	if (!(flags & 0x0000ffff))	960	if (!(flags & 0x0000ffffUL))
817	flags |= 0x0000ffff;	961	flags |= ev_recommended_backends ();
818		962
819	method = 0;	963	backend = 0;
		964	backend_fd = -1;
		965	#if EV_USE_INOTIFY
		966	fs_fd = -2;
		967	#endif
		968
820	#if EV_USE_PORT	969	#if EV_USE_PORT
821	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);	970	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
822	#endif	971	#endif
823	#if EV_USE_KQUEUE	972	#if EV_USE_KQUEUE
824	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);	973	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
825	#endif	974	#endif
826	#if EV_USE_EPOLL	975	#if EV_USE_EPOLL
827	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);	976	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
828	#endif	977	#endif
829	#if EV_USE_POLL	978	#if EV_USE_POLL
830	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);	979	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
831	#endif	980	#endif
832	#if EV_USE_SELECT	981	#if EV_USE_SELECT
833	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);	982	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
834	#endif	983	#endif
835		984
836	ev_init (&sigev, sigcb);	985	ev_init (&sigev, sigcb);
837	ev_set_priority (&sigev, EV_MAXPRI);	986	ev_set_priority (&sigev, EV_MAXPRI);
838	}	987	}
839	}	988	}
840		989
841	static void	990	static void noinline
842	loop_destroy (EV_P)	991	loop_destroy (EV_P)
843	{	992	{
844	int i;	993	int i;
845		994
		995	#if EV_USE_INOTIFY
		996	if (fs_fd >= 0)
		997	close (fs_fd);
		998	#endif
		999
		1000	if (backend_fd >= 0)
		1001	close (backend_fd);
		1002
846	#if EV_USE_PORT	1003	#if EV_USE_PORT
847	if (method == EVMETHOD_PORT ) port_destroy (EV_A);	1004	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
848	#endif	1005	#endif
849	#if EV_USE_KQUEUE	1006	#if EV_USE_KQUEUE
850	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1007	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
851	#endif	1008	#endif
852	#if EV_USE_EPOLL	1009	#if EV_USE_EPOLL
853	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1010	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
854	#endif	1011	#endif
855	#if EV_USE_POLL	1012	#if EV_USE_POLL
856	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1013	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
857	#endif	1014	#endif
858	#if EV_USE_SELECT	1015	#if EV_USE_SELECT
859	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1016	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
860	#endif	1017	#endif
861		1018
862	for (i = NUMPRI; i--; )	1019	for (i = NUMPRI; i--; )
		1020	{
863	array_free (pending, [i]);	1021	array_free (pending, [i]);
		1022	#if EV_IDLE_ENABLE
		1023	array_free (idle, [i]);
		1024	#endif
		1025	}
864		1026
865	/* have to use the microsoft-never-gets-it-right macro */	1027	/* have to use the microsoft-never-gets-it-right macro */
866	array_free (fdchange, EMPTY0);	1028	array_free (fdchange, EMPTY);
867	array_free (timer, EMPTY0);	1029	array_free (timer, EMPTY);
868	#if EV_PERIODICS	1030	#if EV_PERIODIC_ENABLE
869	array_free (periodic, EMPTY0);	1031	array_free (periodic, EMPTY);
870	#endif	1032	#endif
871	array_free (idle, EMPTY0);
872	array_free (prepare, EMPTY0);	1033	array_free (prepare, EMPTY);
873	array_free (check, EMPTY0);	1034	array_free (check, EMPTY);
874		1035
875	method = 0;	1036	backend = 0;
876	}	1037	}
877		1038
878	static void	1039	void inline_size infy_fork (EV_P);
		1040
		1041	void inline_size
879	loop_fork (EV_P)	1042	loop_fork (EV_P)
880	{	1043	{
881	#if EV_USE_PORT	1044	#if EV_USE_PORT
882	if (method == EVMETHOD_PORT ) port_fork (EV_A);	1045	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
883	#endif	1046	#endif
884	#if EV_USE_KQUEUE	1047	#if EV_USE_KQUEUE
885	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1048	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
886	#endif	1049	#endif
887	#if EV_USE_EPOLL	1050	#if EV_USE_EPOLL
888	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1051	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1052	#endif
		1053	#if EV_USE_INOTIFY
		1054	infy_fork (EV_A);
889	#endif	1055	#endif
890		1056
891	if (ev_is_active (&sigev))	1057	if (ev_is_active (&sigev))
892	{	1058	{
893	/* default loop */	1059	/* default loop */
…		…
914		1080
915	memset (loop, 0, sizeof (struct ev_loop));	1081	memset (loop, 0, sizeof (struct ev_loop));
916		1082
917	loop_init (EV_A_ flags);	1083	loop_init (EV_A_ flags);
918		1084
919	if (ev_method (EV_A))	1085	if (ev_backend (EV_A))
920	return loop;	1086	return loop;
921		1087
922	return 0;	1088	return 0;
923	}	1089	}
924		1090
…		…
957	ev_default_loop_ptr = 1;	1123	ev_default_loop_ptr = 1;
958	#endif	1124	#endif
959		1125
960	loop_init (EV_A_ flags);	1126	loop_init (EV_A_ flags);
961		1127
962	if (ev_method (EV_A))	1128	if (ev_backend (EV_A))
963	{	1129	{
964	siginit (EV_A);	1130	siginit (EV_A);
965		1131
966	#ifndef _WIN32	1132	#ifndef _WIN32
967	ev_signal_init (&childev, childcb, SIGCHLD);	1133	ev_signal_init (&childev, childcb, SIGCHLD);
…		…
1003	{	1169	{
1004	#if EV_MULTIPLICITY	1170	#if EV_MULTIPLICITY
1005	struct ev_loop *loop = ev_default_loop_ptr;	1171	struct ev_loop *loop = ev_default_loop_ptr;
1006	#endif	1172	#endif
1007		1173
1008	if (method)	1174	if (backend)
1009	postfork = 1;	1175	postfork = 1;
1010	}	1176	}
1011		1177
1012	/*****************************************************************************/	1178	/*****************************************************************************/
1013		1179
1014	static int	1180	void
1015	any_pending (EV_P)	1181	ev_invoke (EV_P_ void *w, int revents)
1016	{	1182	{
1017	int pri;	1183	EV_CB_INVOKE ((W)w, revents);
1018
1019	for (pri = NUMPRI; pri--; )
1020	if (pendingcnt [pri])
1021	return 1;
1022
1023	return 0;
1024	}	1184	}
1025		1185
1026	inline void	1186	void inline_speed
1027	call_pending (EV_P)	1187	call_pending (EV_P)
1028	{	1188	{
1029	int pri;	1189	int pri;
1030		1190
1031	for (pri = NUMPRI; pri--; )	1191	for (pri = NUMPRI; pri--; )
…		…
1033	{	1193	{
1034	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1194	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1035		1195
1036	if (expect_true (p->w))	1196	if (expect_true (p->w))
1037	{	1197	{
		1198	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1199
1038	p->w->pending = 0;	1200	p->w->pending = 0;
1039	EV_CB_INVOKE (p->w, p->events);	1201	EV_CB_INVOKE (p->w, p->events);
1040	}	1202	}
1041	}	1203	}
1042	}	1204	}
1043		1205
1044	inline void	1206	void inline_size
1045	timers_reify (EV_P)	1207	timers_reify (EV_P)
1046	{	1208	{
1047	while (timercnt && ((WT)timers [0])->at <= mn_now)	1209	while (timercnt && ((WT)timers [0])->at <= mn_now)
1048	{	1210	{
1049	struct ev_timer *w = timers [0];	1211	ev_timer *w = timers [0];
1050		1212
1051	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1213	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1052		1214
1053	/* first reschedule or stop timer */	1215	/* first reschedule or stop timer */
1054	if (w->repeat)	1216	if (w->repeat)
1055	{	1217	{
1056	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1218	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
…		…
1066		1228
1067	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1229	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1068	}	1230	}
1069	}	1231	}
1070		1232
1071	#if EV_PERIODICS	1233	#if EV_PERIODIC_ENABLE
1072	inline void	1234	void inline_size
1073	periodics_reify (EV_P)	1235	periodics_reify (EV_P)
1074	{	1236	{
1075	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1237	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1076	{	1238	{
1077	struct ev_periodic *w = periodics [0];	1239	ev_periodic *w = periodics [0];
1078		1240
1079	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1241	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1080		1242
1081	/* first reschedule or stop timer */	1243	/* first reschedule or stop timer */
1082	if (w->reschedule_cb)	1244	if (w->reschedule_cb)
1083	{	1245	{
1084	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1246	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1085	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1247	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1086	downheap ((WT *)periodics, periodiccnt, 0);	1248	downheap ((WT *)periodics, periodiccnt, 0);
1087	}	1249	}
1088	else if (w->interval)	1250	else if (w->interval)
1089	{	1251	{
1090	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1252	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1253	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1091	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1254	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1092	downheap ((WT *)periodics, periodiccnt, 0);	1255	downheap ((WT *)periodics, periodiccnt, 0);
1093	}	1256	}
1094	else	1257	else
1095	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1258	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1096		1259
1097	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1260	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1098	}	1261	}
1099	}	1262	}
1100		1263
1101	static void	1264	static void noinline
1102	periodics_reschedule (EV_P)	1265	periodics_reschedule (EV_P)
1103	{	1266	{
1104	int i;	1267	int i;
1105		1268
1106	/* adjust periodics after time jump */	1269	/* adjust periodics after time jump */
1107	for (i = 0; i < periodiccnt; ++i)	1270	for (i = 0; i < periodiccnt; ++i)
1108	{	1271	{
1109	struct ev_periodic *w = periodics [i];	1272	ev_periodic *w = periodics [i];
1110		1273
1111	if (w->reschedule_cb)	1274	if (w->reschedule_cb)
1112	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1275	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1113	else if (w->interval)	1276	else if (w->interval)
1114	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1277	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1115	}	1278	}
1116		1279
1117	/* now rebuild the heap */	1280	/* now rebuild the heap */
1118	for (i = periodiccnt >> 1; i--; )	1281	for (i = periodiccnt >> 1; i--; )
1119	downheap ((WT *)periodics, periodiccnt, i);	1282	downheap ((WT *)periodics, periodiccnt, i);
1120	}	1283	}
1121	#endif	1284	#endif
1122		1285
1123	inline int	1286	#if EV_IDLE_ENABLE
1124	time_update_monotonic (EV_P)	1287	void inline_size
		1288	idle_reify (EV_P)
1125	{	1289	{
		1290	if (expect_false (idleall))
		1291	{
		1292	int pri;
		1293
		1294	for (pri = NUMPRI; pri--; )
		1295	{
		1296	if (pendingcnt [pri])
		1297	break;
		1298
		1299	if (idlecnt [pri])
		1300	{
		1301	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1302	break;
		1303	}
		1304	}
		1305	}
		1306	}
		1307	#endif
		1308
		1309	void inline_speed
		1310	time_update (EV_P_ ev_tstamp max_block)
		1311	{
		1312	int i;
		1313
		1314	#if EV_USE_MONOTONIC
		1315	if (expect_true (have_monotonic))
		1316	{
		1317	ev_tstamp odiff = rtmn_diff;
		1318
1126	mn_now = get_clock ();	1319	mn_now = get_clock ();
1127		1320
		1321	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1322	/* interpolate in the meantime */
1128	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1323	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1129	{	1324	{
1130	ev_rt_now = rtmn_diff + mn_now;	1325	ev_rt_now = rtmn_diff + mn_now;
1131	return 0;	1326	return;
1132	}	1327	}
1133	else	1328
1134	{
1135	now_floor = mn_now;	1329	now_floor = mn_now;
1136	ev_rt_now = ev_time ();	1330	ev_rt_now = ev_time ();
1137	return 1;
1138	}
1139	}
1140		1331
1141	inline void	1332	/* loop a few times, before making important decisions.
1142	time_update (EV_P)	1333	* on the choice of "4": one iteration isn't enough,
1143	{	1334	* in case we get preempted during the calls to
1144	int i;	1335	* ev_time and get_clock. a second call is almost guaranteed
1145		1336	* to succeed in that case, though. and looping a few more times
1146	#if EV_USE_MONOTONIC	1337	* doesn't hurt either as we only do this on time-jumps or
1147	if (expect_true (have_monotonic))	1338	* in the unlikely event of having been preempted here.
1148	{	1339	*/
1149	if (time_update_monotonic (EV_A))	1340	for (i = 4; --i; )
1150	{	1341	{
1151	ev_tstamp odiff = rtmn_diff;
1152
1153	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1154	{
1155	rtmn_diff = ev_rt_now - mn_now;	1342	rtmn_diff = ev_rt_now - mn_now;
1156		1343
1157	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1344	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1158	return; /* all is well */	1345	return; /* all is well */
1159		1346
1160	ev_rt_now = ev_time ();	1347	ev_rt_now = ev_time ();
1161	mn_now = get_clock ();	1348	mn_now = get_clock ();
1162	now_floor = mn_now;	1349	now_floor = mn_now;
1163	}	1350	}
1164		1351
1165	# if EV_PERIODICS	1352	# if EV_PERIODIC_ENABLE
		1353	periodics_reschedule (EV_A);
		1354	# endif
		1355	/* no timer adjustment, as the monotonic clock doesn't jump */
		1356	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1357	}
		1358	else
		1359	#endif
		1360	{
		1361	ev_rt_now = ev_time ();
		1362
		1363	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1364	{
		1365	#if EV_PERIODIC_ENABLE
1166	periodics_reschedule (EV_A);	1366	periodics_reschedule (EV_A);
1167	# endif	1367	#endif
1168	/* no timer adjustment, as the monotonic clock doesn't jump */
1169	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1170	}
1171	}
1172	else
1173	#endif
1174	{
1175	ev_rt_now = ev_time ();
1176
1177	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1178	{
1179	#if EV_PERIODICS
1180	periodics_reschedule (EV_A);
1181	#endif
1182
1183	/* adjust timers. this is easy, as the offset is the same for all */	1368	/* adjust timers. this is easy, as the offset is the same for all of them */
1184	for (i = 0; i < timercnt; ++i)	1369	for (i = 0; i < timercnt; ++i)
1185	((WT)timers [i])->at += ev_rt_now - mn_now;	1370	((WT)timers [i])->at += ev_rt_now - mn_now;
1186	}	1371	}
1187		1372
1188	mn_now = ev_rt_now;	1373	mn_now = ev_rt_now;
…		…
1204	static int loop_done;	1389	static int loop_done;
1205		1390
1206	void	1391	void
1207	ev_loop (EV_P_ int flags)	1392	ev_loop (EV_P_ int flags)
1208	{	1393	{
1209	double block;
1210	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1394	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1395	? EVUNLOOP_ONE
		1396	: EVUNLOOP_CANCEL;
1211		1397
1212	while (activecnt)	1398	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1399
		1400	do
1213	{	1401	{
		1402	#ifndef _WIN32
		1403	if (expect_false (curpid)) /* penalise the forking check even more */
		1404	if (expect_false (getpid () != curpid))
		1405	{
		1406	curpid = getpid ();
		1407	postfork = 1;
		1408	}
		1409	#endif
		1410
		1411	#if EV_FORK_ENABLE
		1412	/* we might have forked, so queue fork handlers */
		1413	if (expect_false (postfork))
		1414	if (forkcnt)
		1415	{
		1416	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1417	call_pending (EV_A);
		1418	}
		1419	#endif
		1420
1214	/* queue check watchers (and execute them) */	1421	/* queue prepare watchers (and execute them) */
1215	if (expect_false (preparecnt))	1422	if (expect_false (preparecnt))
1216	{	1423	{
1217	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1424	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1218	call_pending (EV_A);	1425	call_pending (EV_A);
1219	}	1426	}
1220		1427
		1428	if (expect_false (!activecnt))
		1429	break;
		1430
1221	/* we might have forked, so reify kernel state if necessary */	1431	/* we might have forked, so reify kernel state if necessary */
1222	if (expect_false (postfork))	1432	if (expect_false (postfork))
1223	loop_fork (EV_A);	1433	loop_fork (EV_A);
1224		1434
1225	/* update fd-related kernel structures */	1435	/* update fd-related kernel structures */
1226	fd_reify (EV_A);	1436	fd_reify (EV_A);
1227		1437
1228	/* calculate blocking time */	1438	/* calculate blocking time */
		1439	{
		1440	ev_tstamp block;
1229		1441
1230	/* we only need this for !monotonic clock or timers, but as we basically	1442	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1231	always have timers, we just calculate it always */	1443	block = 0.; /* do not block at all */
1232	#if EV_USE_MONOTONIC
1233	if (expect_true (have_monotonic))
1234	time_update_monotonic (EV_A);
1235	else	1444	else
1236	#endif
1237	{	1445	{
1238	ev_rt_now = ev_time ();	1446	/* update time to cancel out callback processing overhead */
1239	mn_now = ev_rt_now;	1447	time_update (EV_A_ 1e100);
1240	}
1241		1448
1242	if (flags & EVLOOP_NONBLOCK || idlecnt)
1243	block = 0.;
1244	else
1245	{
1246	block = MAX_BLOCKTIME;	1449	block = MAX_BLOCKTIME;
1247		1450
1248	if (timercnt)	1451	if (timercnt)
1249	{	1452	{
1250	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1453	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1251	if (block > to) block = to;	1454	if (block > to) block = to;
1252	}	1455	}
1253		1456
1254	#if EV_PERIODICS	1457	#if EV_PERIODIC_ENABLE
1255	if (periodiccnt)	1458	if (periodiccnt)
1256	{	1459	{
1257	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1460	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1258	if (block > to) block = to;	1461	if (block > to) block = to;
1259	}	1462	}
1260	#endif	1463	#endif
1261		1464
1262	if (expect_false (block < 0.)) block = 0.;	1465	if (expect_false (block < 0.)) block = 0.;
1263	}	1466	}
1264		1467
		1468	++loop_count;
1265	method_poll (EV_A_ block);	1469	backend_poll (EV_A_ block);
1266		1470
1267	/* update ev_rt_now, do magic */	1471	/* update ev_rt_now, do magic */
1268	time_update (EV_A);	1472	time_update (EV_A_ block);
		1473	}
1269		1474
1270	/* queue pending timers and reschedule them */	1475	/* queue pending timers and reschedule them */
1271	timers_reify (EV_A); /* relative timers called last */	1476	timers_reify (EV_A); /* relative timers called last */
1272	#if EV_PERIODICS	1477	#if EV_PERIODIC_ENABLE
1273	periodics_reify (EV_A); /* absolute timers called first */	1478	periodics_reify (EV_A); /* absolute timers called first */
1274	#endif	1479	#endif
1275		1480
		1481	#if EV_IDLE_ENABLE
1276	/* queue idle watchers unless io or timers are pending */	1482	/* queue idle watchers unless other events are pending */
1277	if (idlecnt && !any_pending (EV_A))	1483	idle_reify (EV_A);
1278	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1484	#endif
1279		1485
1280	/* queue check watchers, to be executed first */	1486	/* queue check watchers, to be executed first */
1281	if (expect_false (checkcnt))	1487	if (expect_false (checkcnt))
1282	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1488	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1283		1489
1284	call_pending (EV_A);	1490	call_pending (EV_A);
1285		1491
1286	if (expect_false (loop_done))
1287	break;
1288	}	1492	}
		1493	while (expect_true (activecnt && !loop_done));
1289		1494
1290	if (loop_done != 2)	1495	if (loop_done == EVUNLOOP_ONE)
1291	loop_done = 0;	1496	loop_done = EVUNLOOP_CANCEL;
1292	}	1497	}
1293		1498
1294	void	1499	void
1295	ev_unloop (EV_P_ int how)	1500	ev_unloop (EV_P_ int how)
1296	{	1501	{
1297	loop_done = how;	1502	loop_done = how;
1298	}	1503	}
1299		1504
1300	/*****************************************************************************/	1505	/*****************************************************************************/
1301		1506
1302	inline void	1507	void inline_size
1303	wlist_add (WL *head, WL elem)	1508	wlist_add (WL *head, WL elem)
1304	{	1509	{
1305	elem->next = *head;	1510	elem->next = *head;
1306	*head = elem;	1511	*head = elem;
1307	}	1512	}
1308		1513
1309	inline void	1514	void inline_size
1310	wlist_del (WL *head, WL elem)	1515	wlist_del (WL *head, WL elem)
1311	{	1516	{
1312	while (*head)	1517	while (*head)
1313	{	1518	{
1314	if (*head == elem)	1519	if (*head == elem)
…		…
1319		1524
1320	head = &(*head)->next;	1525	head = &(*head)->next;
1321	}	1526	}
1322	}	1527	}
1323		1528
1324	inline void	1529	void inline_speed
1325	ev_clear_pending (EV_P_ W w)	1530	clear_pending (EV_P_ W w)
1326	{	1531	{
1327	if (w->pending)	1532	if (w->pending)
1328	{	1533	{
1329	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1534	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1330	w->pending = 0;	1535	w->pending = 0;
1331	}	1536	}
1332	}	1537	}
1333		1538
1334	inline void	1539	int
		1540	ev_clear_pending (EV_P_ void *w)
		1541	{
		1542	W w_ = (W)w;
		1543	int pending = w_->pending;
		1544
		1545	if (expect_true (pending))
		1546	{
		1547	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1548	w_->pending = 0;
		1549	p->w = 0;
		1550	return p->events;
		1551	}
		1552	else
		1553	return 0;
		1554	}
		1555
		1556	void inline_size
		1557	pri_adjust (EV_P_ W w)
		1558	{
		1559	int pri = w->priority;
		1560	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1561	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1562	w->priority = pri;
		1563	}
		1564
		1565	void inline_speed
1335	ev_start (EV_P_ W w, int active)	1566	ev_start (EV_P_ W w, int active)
1336	{	1567	{
1337	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1568	pri_adjust (EV_A_ w);
1338	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1339
1340	w->active = active;	1569	w->active = active;
1341	ev_ref (EV_A);	1570	ev_ref (EV_A);
1342	}	1571	}
1343		1572
1344	inline void	1573	void inline_size
1345	ev_stop (EV_P_ W w)	1574	ev_stop (EV_P_ W w)
1346	{	1575	{
1347	ev_unref (EV_A);	1576	ev_unref (EV_A);
1348	w->active = 0;	1577	w->active = 0;
1349	}	1578	}
1350		1579
1351	/*****************************************************************************/	1580	/*****************************************************************************/
1352		1581
1353	void	1582	void noinline
1354	ev_io_start (EV_P_ struct ev_io *w)	1583	ev_io_start (EV_P_ ev_io *w)
1355	{	1584	{
1356	int fd = w->fd;	1585	int fd = w->fd;
1357		1586
1358	if (expect_false (ev_is_active (w)))	1587	if (expect_false (ev_is_active (w)))
1359	return;	1588	return;
…		…
1365	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1594	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1366		1595
1367	fd_change (EV_A_ fd);	1596	fd_change (EV_A_ fd);
1368	}	1597	}
1369		1598
1370	void	1599	void noinline
1371	ev_io_stop (EV_P_ struct ev_io *w)	1600	ev_io_stop (EV_P_ ev_io *w)
1372	{	1601	{
1373	ev_clear_pending (EV_A_ (W)w);	1602	clear_pending (EV_A_ (W)w);
1374	if (expect_false (!ev_is_active (w)))	1603	if (expect_false (!ev_is_active (w)))
1375	return;	1604	return;
1376		1605
1377	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1606	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1378		1607
…		…
1380	ev_stop (EV_A_ (W)w);	1609	ev_stop (EV_A_ (W)w);
1381		1610
1382	fd_change (EV_A_ w->fd);	1611	fd_change (EV_A_ w->fd);
1383	}	1612	}
1384		1613
1385	void	1614	void noinline
1386	ev_timer_start (EV_P_ struct ev_timer *w)	1615	ev_timer_start (EV_P_ ev_timer *w)
1387	{	1616	{
1388	if (expect_false (ev_is_active (w)))	1617	if (expect_false (ev_is_active (w)))
1389	return;	1618	return;
1390		1619
1391	((WT)w)->at += mn_now;	1620	((WT)w)->at += mn_now;
1392		1621
1393	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1622	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1394		1623
1395	ev_start (EV_A_ (W)w, ++timercnt);	1624	ev_start (EV_A_ (W)w, ++timercnt);
1396	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);	1625	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1397	timers [timercnt - 1] = w;	1626	timers [timercnt - 1] = w;
1398	upheap ((WT *)timers, timercnt - 1);	1627	upheap ((WT *)timers, timercnt - 1);
1399		1628
		1629	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1630	}
		1631
		1632	void noinline
		1633	ev_timer_stop (EV_P_ ev_timer *w)
		1634	{
		1635	clear_pending (EV_A_ (W)w);
		1636	if (expect_false (!ev_is_active (w)))
		1637	return;
		1638
1400	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1639	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1401	}
1402		1640
1403	void	1641	{
1404	ev_timer_stop (EV_P_ struct ev_timer *w)	1642	int active = ((W)w)->active;
1405	{
1406	ev_clear_pending (EV_A_ (W)w);
1407	if (expect_false (!ev_is_active (w)))
1408	return;
1409		1643
1410	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1411
1412	if (expect_true (((W)w)->active < timercnt--))	1644	if (expect_true (--active < --timercnt))
1413	{	1645	{
1414	timers [((W)w)->active - 1] = timers [timercnt];	1646	timers [active] = timers [timercnt];
1415	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1647	adjustheap ((WT *)timers, timercnt, active);
1416	}	1648	}
		1649	}
1417		1650
1418	((WT)w)->at -= mn_now;	1651	((WT)w)->at -= mn_now;
1419		1652
1420	ev_stop (EV_A_ (W)w);	1653	ev_stop (EV_A_ (W)w);
1421	}	1654	}
1422		1655
1423	void	1656	void noinline
1424	ev_timer_again (EV_P_ struct ev_timer *w)	1657	ev_timer_again (EV_P_ ev_timer *w)
1425	{	1658	{
1426	if (ev_is_active (w))	1659	if (ev_is_active (w))
1427	{	1660	{
1428	if (w->repeat)	1661	if (w->repeat)
1429	{	1662	{
…		…
1438	w->at = w->repeat;	1671	w->at = w->repeat;
1439	ev_timer_start (EV_A_ w);	1672	ev_timer_start (EV_A_ w);
1440	}	1673	}
1441	}	1674	}
1442		1675
1443	#if EV_PERIODICS	1676	#if EV_PERIODIC_ENABLE
1444	void	1677	void noinline
1445	ev_periodic_start (EV_P_ struct ev_periodic *w)	1678	ev_periodic_start (EV_P_ ev_periodic *w)
1446	{	1679	{
1447	if (expect_false (ev_is_active (w)))	1680	if (expect_false (ev_is_active (w)))
1448	return;	1681	return;
1449		1682
1450	if (w->reschedule_cb)	1683	if (w->reschedule_cb)
1451	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1684	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1452	else if (w->interval)	1685	else if (w->interval)
1453	{	1686	{
1454	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1687	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1455	/* this formula differs from the one in periodic_reify because we do not always round up */	1688	/* this formula differs from the one in periodic_reify because we do not always round up */
1456	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1689	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1457	}	1690	}
		1691	else
		1692	((WT)w)->at = w->offset;
1458		1693
1459	ev_start (EV_A_ (W)w, ++periodiccnt);	1694	ev_start (EV_A_ (W)w, ++periodiccnt);
1460	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1695	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1461	periodics [periodiccnt - 1] = w;	1696	periodics [periodiccnt - 1] = w;
1462	upheap ((WT *)periodics, periodiccnt - 1);	1697	upheap ((WT *)periodics, periodiccnt - 1);
1463		1698
		1699	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1700	}
		1701
		1702	void noinline
		1703	ev_periodic_stop (EV_P_ ev_periodic *w)
		1704	{
		1705	clear_pending (EV_A_ (W)w);
		1706	if (expect_false (!ev_is_active (w)))
		1707	return;
		1708
1464	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1709	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1465	}
1466		1710
1467	void	1711	{
1468	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1712	int active = ((W)w)->active;
1469	{
1470	ev_clear_pending (EV_A_ (W)w);
1471	if (expect_false (!ev_is_active (w)))
1472	return;
1473		1713
1474	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1475
1476	if (expect_true (((W)w)->active < periodiccnt--))	1714	if (expect_true (--active < --periodiccnt))
1477	{	1715	{
1478	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1716	periodics [active] = periodics [periodiccnt];
1479	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1717	adjustheap ((WT *)periodics, periodiccnt, active);
1480	}	1718	}
		1719	}
1481		1720
1482	ev_stop (EV_A_ (W)w);	1721	ev_stop (EV_A_ (W)w);
1483	}	1722	}
1484		1723
1485	void	1724	void noinline
1486	ev_periodic_again (EV_P_ struct ev_periodic *w)	1725	ev_periodic_again (EV_P_ ev_periodic *w)
1487	{	1726	{
1488	/* TODO: use adjustheap and recalculation */	1727	/* TODO: use adjustheap and recalculation */
1489	ev_periodic_stop (EV_A_ w);	1728	ev_periodic_stop (EV_A_ w);
1490	ev_periodic_start (EV_A_ w);	1729	ev_periodic_start (EV_A_ w);
1491	}	1730	}
1492	#endif	1731	#endif
1493		1732
1494	void
1495	ev_idle_start (EV_P_ struct ev_idle *w)
1496	{
1497	if (expect_false (ev_is_active (w)))
1498	return;
1499
1500	ev_start (EV_A_ (W)w, ++idlecnt);
1501	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1502	idles [idlecnt - 1] = w;
1503	}
1504
1505	void
1506	ev_idle_stop (EV_P_ struct ev_idle *w)
1507	{
1508	ev_clear_pending (EV_A_ (W)w);
1509	if (expect_false (!ev_is_active (w)))
1510	return;
1511
1512	idles [((W)w)->active - 1] = idles [--idlecnt];
1513	ev_stop (EV_A_ (W)w);
1514	}
1515
1516	void
1517	ev_prepare_start (EV_P_ struct ev_prepare *w)
1518	{
1519	if (expect_false (ev_is_active (w)))
1520	return;
1521
1522	ev_start (EV_A_ (W)w, ++preparecnt);
1523	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1524	prepares [preparecnt - 1] = w;
1525	}
1526
1527	void
1528	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1529	{
1530	ev_clear_pending (EV_A_ (W)w);
1531	if (expect_false (!ev_is_active (w)))
1532	return;
1533
1534	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1535	ev_stop (EV_A_ (W)w);
1536	}
1537
1538	void
1539	ev_check_start (EV_P_ struct ev_check *w)
1540	{
1541	if (expect_false (ev_is_active (w)))
1542	return;
1543
1544	ev_start (EV_A_ (W)w, ++checkcnt);
1545	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1546	checks [checkcnt - 1] = w;
1547	}
1548
1549	void
1550	ev_check_stop (EV_P_ struct ev_check *w)
1551	{
1552	ev_clear_pending (EV_A_ (W)w);
1553	if (expect_false (!ev_is_active (w)))
1554	return;
1555
1556	checks [((W)w)->active - 1] = checks [--checkcnt];
1557	ev_stop (EV_A_ (W)w);
1558	}
1559
1560	#ifndef SA_RESTART	1733	#ifndef SA_RESTART
1561	# define SA_RESTART 0	1734	# define SA_RESTART 0
1562	#endif	1735	#endif
1563		1736
1564	void	1737	void noinline
1565	ev_signal_start (EV_P_ struct ev_signal *w)	1738	ev_signal_start (EV_P_ ev_signal *w)
1566	{	1739	{
1567	#if EV_MULTIPLICITY	1740	#if EV_MULTIPLICITY
1568	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1741	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1569	#endif	1742	#endif
1570	if (expect_false (ev_is_active (w)))	1743	if (expect_false (ev_is_active (w)))
…		…
1588	sigaction (w->signum, &sa, 0);	1761	sigaction (w->signum, &sa, 0);
1589	#endif	1762	#endif
1590	}	1763	}
1591	}	1764	}
1592		1765
1593	void	1766	void noinline
1594	ev_signal_stop (EV_P_ struct ev_signal *w)	1767	ev_signal_stop (EV_P_ ev_signal *w)
1595	{	1768	{
1596	ev_clear_pending (EV_A_ (W)w);	1769	clear_pending (EV_A_ (W)w);
1597	if (expect_false (!ev_is_active (w)))	1770	if (expect_false (!ev_is_active (w)))
1598	return;	1771	return;
1599		1772
1600	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1773	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1601	ev_stop (EV_A_ (W)w);	1774	ev_stop (EV_A_ (W)w);
…		…
1603	if (!signals [w->signum - 1].head)	1776	if (!signals [w->signum - 1].head)
1604	signal (w->signum, SIG_DFL);	1777	signal (w->signum, SIG_DFL);
1605	}	1778	}
1606		1779
1607	void	1780	void
1608	ev_child_start (EV_P_ struct ev_child *w)	1781	ev_child_start (EV_P_ ev_child *w)
1609	{	1782	{
1610	#if EV_MULTIPLICITY	1783	#if EV_MULTIPLICITY
1611	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1784	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1612	#endif	1785	#endif
1613	if (expect_false (ev_is_active (w)))	1786	if (expect_false (ev_is_active (w)))
1614	return;	1787	return;
1615		1788
1616	ev_start (EV_A_ (W)w, 1);	1789	ev_start (EV_A_ (W)w, 1);
1617	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1790	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1618	}	1791	}
1619		1792
1620	void	1793	void
1621	ev_child_stop (EV_P_ struct ev_child *w)	1794	ev_child_stop (EV_P_ ev_child *w)
1622	{	1795	{
1623	ev_clear_pending (EV_A_ (W)w);	1796	clear_pending (EV_A_ (W)w);
1624	if (expect_false (!ev_is_active (w)))	1797	if (expect_false (!ev_is_active (w)))
1625	return;	1798	return;
1626		1799
1627	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1800	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1628	ev_stop (EV_A_ (W)w);	1801	ev_stop (EV_A_ (W)w);
1629	}	1802	}
1630		1803
		1804	#if EV_STAT_ENABLE
		1805
		1806	# ifdef _WIN32
		1807	# undef lstat
		1808	# define lstat(a,b) _stati64 (a,b)
		1809	# endif
		1810
		1811	#define DEF_STAT_INTERVAL 5.0074891
		1812	#define MIN_STAT_INTERVAL 0.1074891
		1813
		1814	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1815
		1816	#if EV_USE_INOTIFY
		1817	# define EV_INOTIFY_BUFSIZE 8192
		1818
		1819	static void noinline
		1820	infy_add (EV_P_ ev_stat *w)
		1821	{
		1822	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);
		1823
		1824	if (w->wd < 0)
		1825	{
		1826	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1827
		1828	/* monitor some parent directory for speedup hints */
		1829	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1830	{
		1831	char path [4096];
		1832	strcpy (path, w->path);
		1833
		1834	do
		1835	{
		1836	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1837	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1838
		1839	char *pend = strrchr (path, '/');
		1840
		1841	if (!pend)
		1842	break; /* whoops, no '/', complain to your admin */
		1843
		1844	*pend = 0;
		1845	w->wd = inotify_add_watch (fs_fd, path, mask);
		1846	}
		1847	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1848	}
		1849	}
		1850	else
		1851	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1852
		1853	if (w->wd >= 0)
		1854	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1855	}
		1856
		1857	static void noinline
		1858	infy_del (EV_P_ ev_stat *w)
		1859	{
		1860	int slot;
		1861	int wd = w->wd;
		1862
		1863	if (wd < 0)
		1864	return;
		1865
		1866	w->wd = -2;
		1867	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1868	wlist_del (&fs_hash [slot].head, (WL)w);
		1869
		1870	/* remove this watcher, if others are watching it, they will rearm */
		1871	inotify_rm_watch (fs_fd, wd);
		1872	}
		1873
		1874	static void noinline
		1875	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1876	{
		1877	if (slot < 0)
		1878	/* overflow, need to check for all hahs slots */
		1879	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1880	infy_wd (EV_A_ slot, wd, ev);
		1881	else
		1882	{
		1883	WL w_;
		1884
		1885	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1886	{
		1887	ev_stat *w = (ev_stat *)w_;
		1888	w_ = w_->next; /* lets us remove this watcher and all before it */
		1889
		1890	if (w->wd == wd || wd == -1)
		1891	{
		1892	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1893	{
		1894	w->wd = -1;
		1895	infy_add (EV_A_ w); /* re-add, no matter what */
		1896	}
		1897
		1898	stat_timer_cb (EV_A_ &w->timer, 0);
		1899	}
		1900	}
		1901	}
		1902	}
		1903
		1904	static void
		1905	infy_cb (EV_P_ ev_io *w, int revents)
		1906	{
		1907	char buf [EV_INOTIFY_BUFSIZE];
		1908	struct inotify_event *ev = (struct inotify_event *)buf;
		1909	int ofs;
		1910	int len = read (fs_fd, buf, sizeof (buf));
		1911
		1912	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1913	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1914	}
		1915
		1916	void inline_size
		1917	infy_init (EV_P)
		1918	{
		1919	if (fs_fd != -2)
		1920	return;
		1921
		1922	fs_fd = inotify_init ();
		1923
		1924	if (fs_fd >= 0)
		1925	{
		1926	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1927	ev_set_priority (&fs_w, EV_MAXPRI);
		1928	ev_io_start (EV_A_ &fs_w);
		1929	}
		1930	}
		1931
		1932	void inline_size
		1933	infy_fork (EV_P)
		1934	{
		1935	int slot;
		1936
		1937	if (fs_fd < 0)
		1938	return;
		1939
		1940	close (fs_fd);
		1941	fs_fd = inotify_init ();
		1942
		1943	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1944	{
		1945	WL w_ = fs_hash [slot].head;
		1946	fs_hash [slot].head = 0;
		1947
		1948	while (w_)
		1949	{
		1950	ev_stat *w = (ev_stat *)w_;
		1951	w_ = w_->next; /* lets us add this watcher */
		1952
		1953	w->wd = -1;
		1954
		1955	if (fs_fd >= 0)
		1956	infy_add (EV_A_ w); /* re-add, no matter what */
		1957	else
		1958	ev_timer_start (EV_A_ &w->timer);
		1959	}
		1960
		1961	}
		1962	}
		1963
		1964	#endif
		1965
		1966	void
		1967	ev_stat_stat (EV_P_ ev_stat *w)
		1968	{
		1969	if (lstat (w->path, &w->attr) < 0)
		1970	w->attr.st_nlink = 0;
		1971	else if (!w->attr.st_nlink)
		1972	w->attr.st_nlink = 1;
		1973	}
		1974
		1975	static void noinline
		1976	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1977	{
		1978	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1979
		1980	/* we copy this here each the time so that */
		1981	/* prev has the old value when the callback gets invoked */
		1982	w->prev = w->attr;
		1983	ev_stat_stat (EV_A_ w);
		1984
		1985	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1986	if (
		1987	w->prev.st_dev != w->attr.st_dev
		1988	|| w->prev.st_ino != w->attr.st_ino
		1989	|| w->prev.st_mode != w->attr.st_mode
		1990	|| w->prev.st_nlink != w->attr.st_nlink
		1991	|| w->prev.st_uid != w->attr.st_uid
		1992	|| w->prev.st_gid != w->attr.st_gid
		1993	|| w->prev.st_rdev != w->attr.st_rdev
		1994	|| w->prev.st_size != w->attr.st_size
		1995	|| w->prev.st_atime != w->attr.st_atime
		1996	|| w->prev.st_mtime != w->attr.st_mtime
		1997	|| w->prev.st_ctime != w->attr.st_ctime
		1998	) {
		1999	#if EV_USE_INOTIFY
		2000	infy_del (EV_A_ w);
		2001	infy_add (EV_A_ w);
		2002	ev_stat_stat (EV_A_ w); /* avoid race... */
		2003	#endif
		2004
		2005	ev_feed_event (EV_A_ w, EV_STAT);
		2006	}
		2007	}
		2008
		2009	void
		2010	ev_stat_start (EV_P_ ev_stat *w)
		2011	{
		2012	if (expect_false (ev_is_active (w)))
		2013	return;
		2014
		2015	/* since we use memcmp, we need to clear any padding data etc. */
		2016	memset (&w->prev, 0, sizeof (ev_statdata));
		2017	memset (&w->attr, 0, sizeof (ev_statdata));
		2018
		2019	ev_stat_stat (EV_A_ w);
		2020
		2021	if (w->interval < MIN_STAT_INTERVAL)
		2022	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2023
		2024	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2025	ev_set_priority (&w->timer, ev_priority (w));
		2026
		2027	#if EV_USE_INOTIFY
		2028	infy_init (EV_A);
		2029
		2030	if (fs_fd >= 0)
		2031	infy_add (EV_A_ w);
		2032	else
		2033	#endif
		2034	ev_timer_start (EV_A_ &w->timer);
		2035
		2036	ev_start (EV_A_ (W)w, 1);
		2037	}
		2038
		2039	void
		2040	ev_stat_stop (EV_P_ ev_stat *w)
		2041	{
		2042	clear_pending (EV_A_ (W)w);
		2043	if (expect_false (!ev_is_active (w)))
		2044	return;
		2045
		2046	#if EV_USE_INOTIFY
		2047	infy_del (EV_A_ w);
		2048	#endif
		2049	ev_timer_stop (EV_A_ &w->timer);
		2050
		2051	ev_stop (EV_A_ (W)w);
		2052	}
		2053	#endif
		2054
		2055	#if EV_IDLE_ENABLE
		2056	void
		2057	ev_idle_start (EV_P_ ev_idle *w)
		2058	{
		2059	if (expect_false (ev_is_active (w)))
		2060	return;
		2061
		2062	pri_adjust (EV_A_ (W)w);
		2063
		2064	{
		2065	int active = ++idlecnt [ABSPRI (w)];
		2066
		2067	++idleall;
		2068	ev_start (EV_A_ (W)w, active);
		2069
		2070	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2071	idles [ABSPRI (w)][active - 1] = w;
		2072	}
		2073	}
		2074
		2075	void
		2076	ev_idle_stop (EV_P_ ev_idle *w)
		2077	{
		2078	clear_pending (EV_A_ (W)w);
		2079	if (expect_false (!ev_is_active (w)))
		2080	return;
		2081
		2082	{
		2083	int active = ((W)w)->active;
		2084
		2085	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2086	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2087
		2088	ev_stop (EV_A_ (W)w);
		2089	--idleall;
		2090	}
		2091	}
		2092	#endif
		2093
		2094	void
		2095	ev_prepare_start (EV_P_ ev_prepare *w)
		2096	{
		2097	if (expect_false (ev_is_active (w)))
		2098	return;
		2099
		2100	ev_start (EV_A_ (W)w, ++preparecnt);
		2101	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2102	prepares [preparecnt - 1] = w;
		2103	}
		2104
		2105	void
		2106	ev_prepare_stop (EV_P_ ev_prepare *w)
		2107	{
		2108	clear_pending (EV_A_ (W)w);
		2109	if (expect_false (!ev_is_active (w)))
		2110	return;
		2111
		2112	{
		2113	int active = ((W)w)->active;
		2114	prepares [active - 1] = prepares [--preparecnt];
		2115	((W)prepares [active - 1])->active = active;
		2116	}
		2117
		2118	ev_stop (EV_A_ (W)w);
		2119	}
		2120
		2121	void
		2122	ev_check_start (EV_P_ ev_check *w)
		2123	{
		2124	if (expect_false (ev_is_active (w)))
		2125	return;
		2126
		2127	ev_start (EV_A_ (W)w, ++checkcnt);
		2128	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2129	checks [checkcnt - 1] = w;
		2130	}
		2131
		2132	void
		2133	ev_check_stop (EV_P_ ev_check *w)
		2134	{
		2135	clear_pending (EV_A_ (W)w);
		2136	if (expect_false (!ev_is_active (w)))
		2137	return;
		2138
		2139	{
		2140	int active = ((W)w)->active;
		2141	checks [active - 1] = checks [--checkcnt];
		2142	((W)checks [active - 1])->active = active;
		2143	}
		2144
		2145	ev_stop (EV_A_ (W)w);
		2146	}
		2147
		2148	#if EV_EMBED_ENABLE
		2149	void noinline
		2150	ev_embed_sweep (EV_P_ ev_embed *w)
		2151	{
		2152	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2153	}
		2154
		2155	static void
		2156	embed_cb (EV_P_ ev_io *io, int revents)
		2157	{
		2158	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2159
		2160	if (ev_cb (w))
		2161	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2162	else
		2163	ev_embed_sweep (loop, w);
		2164	}
		2165
		2166	void
		2167	ev_embed_start (EV_P_ ev_embed *w)
		2168	{
		2169	if (expect_false (ev_is_active (w)))
		2170	return;
		2171
		2172	{
		2173	struct ev_loop *loop = w->loop;
		2174	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2175	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2176	}
		2177
		2178	ev_set_priority (&w->io, ev_priority (w));
		2179	ev_io_start (EV_A_ &w->io);
		2180
		2181	ev_start (EV_A_ (W)w, 1);
		2182	}
		2183
		2184	void
		2185	ev_embed_stop (EV_P_ ev_embed *w)
		2186	{
		2187	clear_pending (EV_A_ (W)w);
		2188	if (expect_false (!ev_is_active (w)))
		2189	return;
		2190
		2191	ev_io_stop (EV_A_ &w->io);
		2192
		2193	ev_stop (EV_A_ (W)w);
		2194	}
		2195	#endif
		2196
		2197	#if EV_FORK_ENABLE
		2198	void
		2199	ev_fork_start (EV_P_ ev_fork *w)
		2200	{
		2201	if (expect_false (ev_is_active (w)))
		2202	return;
		2203
		2204	ev_start (EV_A_ (W)w, ++forkcnt);
		2205	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2206	forks [forkcnt - 1] = w;
		2207	}
		2208
		2209	void
		2210	ev_fork_stop (EV_P_ ev_fork *w)
		2211	{
		2212	clear_pending (EV_A_ (W)w);
		2213	if (expect_false (!ev_is_active (w)))
		2214	return;
		2215
		2216	{
		2217	int active = ((W)w)->active;
		2218	forks [active - 1] = forks [--forkcnt];
		2219	((W)forks [active - 1])->active = active;
		2220	}
		2221
		2222	ev_stop (EV_A_ (W)w);
		2223	}
		2224	#endif
		2225
1631	/*****************************************************************************/	2226	/*****************************************************************************/
1632		2227
1633	struct ev_once	2228	struct ev_once
1634	{	2229	{
1635	struct ev_io io;	2230	ev_io io;
1636	struct ev_timer to;	2231	ev_timer to;
1637	void (*cb)(int revents, void *arg);	2232	void (*cb)(int revents, void *arg);
1638	void *arg;	2233	void *arg;
1639	};	2234	};
1640		2235
1641	static void	2236	static void
…		…
1650		2245
1651	cb (revents, arg);	2246	cb (revents, arg);
1652	}	2247	}
1653		2248
1654	static void	2249	static void
1655	once_cb_io (EV_P_ struct ev_io *w, int revents)	2250	once_cb_io (EV_P_ ev_io *w, int revents)
1656	{	2251	{
1657	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2252	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1658	}	2253	}
1659		2254
1660	static void	2255	static void
1661	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2256	once_cb_to (EV_P_ ev_timer *w, int revents)
1662	{	2257	{
1663	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2258	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1664	}	2259	}
1665		2260
1666	void	2261	void

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