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Comparing libev/ev.c (file contents):
Revision 1.129 by root, Fri Nov 23 05:00:44 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		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_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
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	int 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 |= w->events;
451		542
452	#if EV_SELECT_IS_WINSOCKET	543	#if EV_SELECT_IS_WINSOCKET
453	if (events)	544	if (events)
454	{	545	{
…		…
458	}	549	}
459	#endif	550	#endif
460		551
461	anfd->reify = 0;	552	anfd->reify = 0;
462		553
463	method_modify (EV_A_ fd, anfd->events, events);	554	backend_modify (EV_A_ fd, anfd->events, events);
464	anfd->events = events;	555	anfd->events = events;
465	}	556	}
466		557
467	fdchangecnt = 0;	558	fdchangecnt = 0;
468	}	559	}
469		560
470	static void	561	void inline_size
471	fd_change (EV_P_ int fd)	562	fd_change (EV_P_ int fd)
472	{	563	{
473	if (expect_false (anfds [fd].reify))	564	if (expect_false (anfds [fd].reify))
474	return;	565	return;
475		566
…		…
478	++fdchangecnt;	569	++fdchangecnt;
479	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
480	fdchanges [fdchangecnt - 1] = fd;	571	fdchanges [fdchangecnt - 1] = fd;
481	}	572	}
482		573
483	static void	574	void inline_speed
484	fd_kill (EV_P_ int fd)	575	fd_kill (EV_P_ int fd)
485	{	576	{
486	struct ev_io *w;	577	ev_io *w;
487		578
488	while ((w = (struct ev_io *)anfds [fd].head))	579	while ((w = (ev_io *)anfds [fd].head))
489	{	580	{
490	ev_io_stop (EV_A_ w);	581	ev_io_stop (EV_A_ w);
491	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);
492	}	583	}
493	}	584	}
494		585
495	inline int	586	int inline_size
496	fd_valid (int fd)	587	fd_valid (int fd)
497	{	588	{
498	#ifdef _WIN32	589	#ifdef _WIN32
499	return _get_osfhandle (fd) != -1;	590	return _get_osfhandle (fd) != -1;
500	#else	591	#else
501	return fcntl (fd, F_GETFD) != -1;	592	return fcntl (fd, F_GETFD) != -1;
502	#endif	593	#endif
503	}	594	}
504		595
505	/* called on EBADF to verify fds */	596	/* called on EBADF to verify fds */
506	static void	597	static void noinline
507	fd_ebadf (EV_P)	598	fd_ebadf (EV_P)
508	{	599	{
509	int fd;	600	int fd;
510		601
511	for (fd = 0; fd < anfdmax; ++fd)	602	for (fd = 0; fd < anfdmax; ++fd)
…		…
513	if (!fd_valid (fd) == -1 && errno == EBADF)	604	if (!fd_valid (fd) == -1 && errno == EBADF)
514	fd_kill (EV_A_ fd);	605	fd_kill (EV_A_ fd);
515	}	606	}
516		607
517	/* 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 */
518	static void	609	static void noinline
519	fd_enomem (EV_P)	610	fd_enomem (EV_P)
520	{	611	{
521	int fd;	612	int fd;
522		613
523	for (fd = anfdmax; fd--; )	614	for (fd = anfdmax; fd--; )
…		…
526	fd_kill (EV_A_ fd);	617	fd_kill (EV_A_ fd);
527	return;	618	return;
528	}	619	}
529	}	620	}
530		621
531	/* 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 */
532	static void	623	static void noinline
533	fd_rearm_all (EV_P)	624	fd_rearm_all (EV_P)
534	{	625	{
535	int fd;	626	int fd;
536		627
537	/* this should be highly optimised to not do anything but set a flag */
538	for (fd = 0; fd < anfdmax; ++fd)	628	for (fd = 0; fd < anfdmax; ++fd)
539	if (anfds [fd].events)	629	if (anfds [fd].events)
540	{	630	{
541	anfds [fd].events = 0;	631	anfds [fd].events = 0;
542	fd_change (EV_A_ fd);	632	fd_change (EV_A_ fd);
543	}	633	}
544	}	634	}
545		635
546	/*****************************************************************************/	636	/*****************************************************************************/
547		637
548	static void	638	void inline_speed
549	upheap (WT *heap, int k)	639	upheap (WT *heap, int k)
550	{	640	{
551	WT w = heap [k];	641	WT w = heap [k];
552		642
553	while (k && heap [k >> 1]->at > w->at)	643	while (k && heap [k >> 1]->at > w->at)
…		…
560	heap [k] = w;	650	heap [k] = w;
561	((W)heap [k])->active = k + 1;	651	((W)heap [k])->active = k + 1;
562		652
563	}	653	}
564		654
565	static void	655	void inline_speed
566	downheap (WT *heap, int N, int k)	656	downheap (WT *heap, int N, int k)
567	{	657	{
568	WT w = heap [k];	658	WT w = heap [k];
569		659
570	while (k < (N >> 1))	660	while (k < (N >> 1))
…		…
584		674
585	heap [k] = w;	675	heap [k] = w;
586	((W)heap [k])->active = k + 1;	676	((W)heap [k])->active = k + 1;
587	}	677	}
588		678
589	inline void	679	void inline_size
590	adjustheap (WT *heap, int N, int k)	680	adjustheap (WT *heap, int N, int k)
591	{	681	{
592	upheap (heap, k);	682	upheap (heap, k);
593	downheap (heap, N, k);	683	downheap (heap, N, k);
594	}	684	}
…		…
604	static ANSIG *signals;	694	static ANSIG *signals;
605	static int signalmax;	695	static int signalmax;
606		696
607	static int sigpipe [2];	697	static int sigpipe [2];
608	static sig_atomic_t volatile gotsig;	698	static sig_atomic_t volatile gotsig;
609	static struct ev_io sigev;	699	static ev_io sigev;
610		700
611	static void	701	void inline_size
612	signals_init (ANSIG *base, int count)	702	signals_init (ANSIG *base, int count)
613	{	703	{
614	while (count--)	704	while (count--)
615	{	705	{
616	base->head = 0;	706	base->head = 0;
…		…
636	write (sigpipe [1], &signum, 1);	726	write (sigpipe [1], &signum, 1);
637	errno = old_errno;	727	errno = old_errno;
638	}	728	}
639	}	729	}
640		730
641	void	731	void noinline
642	ev_feed_signal_event (EV_P_ int signum)	732	ev_feed_signal_event (EV_P_ int signum)
643	{	733	{
644	WL w;	734	WL w;
645		735
646	#if EV_MULTIPLICITY	736	#if EV_MULTIPLICITY
…		…
657	for (w = signals [signum].head; w; w = w->next)	747	for (w = signals [signum].head; w; w = w->next)
658	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	748	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
659	}	749	}
660		750
661	static void	751	static void
662	sigcb (EV_P_ struct ev_io *iow, int revents)	752	sigcb (EV_P_ ev_io *iow, int revents)
663	{	753	{
664	int signum;	754	int signum;
665		755
666	read (sigpipe [0], &revents, 1);	756	read (sigpipe [0], &revents, 1);
667	gotsig = 0;	757	gotsig = 0;
…		…
669	for (signum = signalmax; signum--; )	759	for (signum = signalmax; signum--; )
670	if (signals [signum].gotsig)	760	if (signals [signum].gotsig)
671	ev_feed_signal_event (EV_A_ signum + 1);	761	ev_feed_signal_event (EV_A_ signum + 1);
672	}	762	}
673		763
674	static void	764	void inline_speed
675	fd_intern (int fd)	765	fd_intern (int fd)
676	{	766	{
677	#ifdef _WIN32	767	#ifdef _WIN32
678	int arg = 1;	768	int arg = 1;
679	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	769	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
681	fcntl (fd, F_SETFD, FD_CLOEXEC);	771	fcntl (fd, F_SETFD, FD_CLOEXEC);
682	fcntl (fd, F_SETFL, O_NONBLOCK);	772	fcntl (fd, F_SETFL, O_NONBLOCK);
683	#endif	773	#endif
684	}	774	}
685		775
686	static void	776	static void noinline
687	siginit (EV_P)	777	siginit (EV_P)
688	{	778	{
689	fd_intern (sigpipe [0]);	779	fd_intern (sigpipe [0]);
690	fd_intern (sigpipe [1]);	780	fd_intern (sigpipe [1]);
691		781
…		…
694	ev_unref (EV_A); /* child watcher should not keep loop alive */	784	ev_unref (EV_A); /* child watcher should not keep loop alive */
695	}	785	}
696		786
697	/*****************************************************************************/	787	/*****************************************************************************/
698		788
699	static struct ev_child *childs [PID_HASHSIZE];	789	static ev_child *childs [EV_PID_HASHSIZE];
700		790
701	#ifndef _WIN32	791	#ifndef _WIN32
702		792
703	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	}
704		809
705	#ifndef WCONTINUED	810	#ifndef WCONTINUED
706	# define WCONTINUED 0	811	# define WCONTINUED 0
707	#endif	812	#endif
708		813
709	static void	814	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)	815	childcb (EV_P_ ev_signal *sw, int revents)
726	{	816	{
727	int pid, status;	817	int pid, status;
728		818
		819	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
729	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	820	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
730	{	821	if (!WCONTINUED
		822	|| errno != EINVAL
		823	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		824	return;
		825
731	/* 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 */
732	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	828	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
733		829
734	child_reap (EV_A_ sw, pid, pid, status);	830	child_reap (EV_A_ sw, pid, pid, status);
		831	if (EV_PID_HASHSIZE > 1)
735	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 */
736	}
737	}	833	}
738		834
739	#endif	835	#endif
740		836
741	/*****************************************************************************/	837	/*****************************************************************************/
…		…
767	{	863	{
768	return EV_VERSION_MINOR;	864	return EV_VERSION_MINOR;
769	}	865	}
770		866
771	/* 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 */
772	static int	868	int inline_size
773	enable_secure (void)	869	enable_secure (void)
774	{	870	{
775	#ifdef _WIN32	871	#ifdef _WIN32
776	return 0;	872	return 0;
777	#else	873	#else
…		…
781	}	877	}
782		878
783	unsigned int	879	unsigned int
784	ev_supported_backends (void)	880	ev_supported_backends (void)
785	{	881	{
786	}
787
788	unsigned int
789	ev_recommended_backends (void)
790	{
791	unsigned int flags;	882	unsigned int flags = 0;
792		883
793	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;	884	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
794	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;	885	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
795	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;	886	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
796	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;	887	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
…		…
798		889
799	return flags;	890	return flags;
800	}	891	}
801		892
802	unsigned int	893	unsigned int
803	ev_backend (EV_P)	894	ev_recommended_backends (void)
804	{	895	{
805	unsigned int flags = ev_recommended_backends ();	896	unsigned int flags = ev_supported_backends ();
806		897
807	#ifndef __NetBSD__	898	#ifndef __NetBSD__
808	/* kqueue is borked on everything but netbsd apparently */	899	/* kqueue is borked on everything but netbsd apparently */
809	/* it usually doesn't work correctly on anything but sockets and pipes */	900	/* it usually doesn't work correctly on anything but sockets and pipes */
810	flags &= ~EVBACKEND_KQUEUE;	901	flags &= ~EVBACKEND_KQUEUE;
…		…
815	#endif	906	#endif
816		907
817	return flags;	908	return flags;
818	}	909	}
819		910
820	static void	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
821	loop_init (EV_P_ unsigned int flags)	932	loop_init (EV_P_ unsigned int flags)
822	{	933	{
823	if (!method)	934	if (!backend)
824	{	935	{
825	#if EV_USE_MONOTONIC	936	#if EV_USE_MONOTONIC
826	{	937	{
827	struct timespec ts;	938	struct timespec ts;
828	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	939	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
833	ev_rt_now = ev_time ();	944	ev_rt_now = ev_time ();
834	mn_now = get_clock ();	945	mn_now = get_clock ();
835	now_floor = mn_now;	946	now_floor = mn_now;
836	rtmn_diff = ev_rt_now - mn_now;	947	rtmn_diff = ev_rt_now - mn_now;
837		948
		949	/* pid check not overridable via env */
		950	#ifndef _WIN32
		951	if (flags & EVFLAG_FORKCHECK)
		952	curpid = getpid ();
		953	#endif
		954
838	if (!(flags & EVFLAG_NOENV)	955	if (!(flags & EVFLAG_NOENV)
839	&& !enable_secure ()	956	&& !enable_secure ()
840	&& getenv ("LIBEV_FLAGS"))	957	&& getenv ("LIBEV_FLAGS"))
841	flags = atoi (getenv ("LIBEV_FLAGS"));	958	flags = atoi (getenv ("LIBEV_FLAGS"));
842		959
843	if (!(flags & 0x0000ffffUL))	960	if (!(flags & 0x0000ffffUL))
844	flags |= ev_recommended_backends ();	961	flags |= ev_recommended_backends ();
845		962
846	method = 0;	963	backend = 0;
		964	backend_fd = -1;
		965	#if EV_USE_INOTIFY
		966	fs_fd = -2;
		967	#endif
		968
847	#if EV_USE_PORT	969	#if EV_USE_PORT
848	if (!method && (flags & EVBACKEND_PORT )) method = port_init (EV_A_ flags);	970	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
849	#endif	971	#endif
850	#if EV_USE_KQUEUE	972	#if EV_USE_KQUEUE
851	if (!method && (flags & EVBACKEND_KQUEUE)) method = kqueue_init (EV_A_ flags);	973	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
852	#endif	974	#endif
853	#if EV_USE_EPOLL	975	#if EV_USE_EPOLL
854	if (!method && (flags & EVBACKEND_EPOLL )) method = epoll_init (EV_A_ flags);	976	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
855	#endif	977	#endif
856	#if EV_USE_POLL	978	#if EV_USE_POLL
857	if (!method && (flags & EVBACKEND_POLL )) method = poll_init (EV_A_ flags);	979	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
858	#endif	980	#endif
859	#if EV_USE_SELECT	981	#if EV_USE_SELECT
860	if (!method && (flags & EVBACKEND_SELECT)) method = select_init (EV_A_ flags);	982	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
861	#endif	983	#endif
862		984
863	ev_init (&sigev, sigcb);	985	ev_init (&sigev, sigcb);
864	ev_set_priority (&sigev, EV_MAXPRI);	986	ev_set_priority (&sigev, EV_MAXPRI);
865	}	987	}
866	}	988	}
867		989
868	static void	990	static void noinline
869	loop_destroy (EV_P)	991	loop_destroy (EV_P)
870	{	992	{
871	int i;	993	int i;
872		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
873	#if EV_USE_PORT	1003	#if EV_USE_PORT
874	if (method == EVBACKEND_PORT ) port_destroy (EV_A);	1004	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
875	#endif	1005	#endif
876	#if EV_USE_KQUEUE	1006	#if EV_USE_KQUEUE
877	if (method == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);	1007	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
878	#endif	1008	#endif
879	#if EV_USE_EPOLL	1009	#if EV_USE_EPOLL
880	if (method == EVBACKEND_EPOLL ) epoll_destroy (EV_A);	1010	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
881	#endif	1011	#endif
882	#if EV_USE_POLL	1012	#if EV_USE_POLL
883	if (method == EVBACKEND_POLL ) poll_destroy (EV_A);	1013	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
884	#endif	1014	#endif
885	#if EV_USE_SELECT	1015	#if EV_USE_SELECT
886	if (method == EVBACKEND_SELECT) select_destroy (EV_A);	1016	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
887	#endif	1017	#endif
888		1018
889	for (i = NUMPRI; i--; )	1019	for (i = NUMPRI; i--; )
		1020	{
890	array_free (pending, [i]);	1021	array_free (pending, [i]);
		1022	#if EV_IDLE_ENABLE
		1023	array_free (idle, [i]);
		1024	#endif
		1025	}
891		1026
892	/* have to use the microsoft-never-gets-it-right macro */	1027	/* have to use the microsoft-never-gets-it-right macro */
893	array_free (fdchange, EMPTY0);	1028	array_free (fdchange, EMPTY);
894	array_free (timer, EMPTY0);	1029	array_free (timer, EMPTY);
895	#if EV_PERIODICS	1030	#if EV_PERIODIC_ENABLE
896	array_free (periodic, EMPTY0);	1031	array_free (periodic, EMPTY);
897	#endif	1032	#endif
898	array_free (idle, EMPTY0);
899	array_free (prepare, EMPTY0);	1033	array_free (prepare, EMPTY);
900	array_free (check, EMPTY0);	1034	array_free (check, EMPTY);
901		1035
902	method = 0;	1036	backend = 0;
903	}	1037	}
904		1038
905	static void	1039	void inline_size infy_fork (EV_P);
		1040
		1041	void inline_size
906	loop_fork (EV_P)	1042	loop_fork (EV_P)
907	{	1043	{
908	#if EV_USE_PORT	1044	#if EV_USE_PORT
909	if (method == EVBACKEND_PORT ) port_fork (EV_A);	1045	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
910	#endif	1046	#endif
911	#if EV_USE_KQUEUE	1047	#if EV_USE_KQUEUE
912	if (method == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1048	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
913	#endif	1049	#endif
914	#if EV_USE_EPOLL	1050	#if EV_USE_EPOLL
915	if (method == EVBACKEND_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);
916	#endif	1055	#endif
917		1056
918	if (ev_is_active (&sigev))	1057	if (ev_is_active (&sigev))
919	{	1058	{
920	/* default loop */	1059	/* default loop */
…		…
941		1080
942	memset (loop, 0, sizeof (struct ev_loop));	1081	memset (loop, 0, sizeof (struct ev_loop));
943		1082
944	loop_init (EV_A_ flags);	1083	loop_init (EV_A_ flags);
945		1084
946	if (ev_method (EV_A))	1085	if (ev_backend (EV_A))
947	return loop;	1086	return loop;
948		1087
949	return 0;	1088	return 0;
950	}	1089	}
951		1090
…		…
984	ev_default_loop_ptr = 1;	1123	ev_default_loop_ptr = 1;
985	#endif	1124	#endif
986		1125
987	loop_init (EV_A_ flags);	1126	loop_init (EV_A_ flags);
988		1127
989	if (ev_method (EV_A))	1128	if (ev_backend (EV_A))
990	{	1129	{
991	siginit (EV_A);	1130	siginit (EV_A);
992		1131
993	#ifndef _WIN32	1132	#ifndef _WIN32
994	ev_signal_init (&childev, childcb, SIGCHLD);	1133	ev_signal_init (&childev, childcb, SIGCHLD);
…		…
1030	{	1169	{
1031	#if EV_MULTIPLICITY	1170	#if EV_MULTIPLICITY
1032	struct ev_loop *loop = ev_default_loop_ptr;	1171	struct ev_loop *loop = ev_default_loop_ptr;
1033	#endif	1172	#endif
1034		1173
1035	if (method)	1174	if (backend)
1036	postfork = 1;	1175	postfork = 1;
1037	}	1176	}
1038		1177
1039	/*****************************************************************************/	1178	/*****************************************************************************/
1040		1179
1041	static int	1180	void
1042	any_pending (EV_P)	1181	ev_invoke (EV_P_ void *w, int revents)
1043	{	1182	{
1044	int pri;	1183	EV_CB_INVOKE ((W)w, revents);
1045
1046	for (pri = NUMPRI; pri--; )
1047	if (pendingcnt [pri])
1048	return 1;
1049
1050	return 0;
1051	}	1184	}
1052		1185
1053	inline void	1186	void inline_speed
1054	call_pending (EV_P)	1187	call_pending (EV_P)
1055	{	1188	{
1056	int pri;	1189	int pri;
1057		1190
1058	for (pri = NUMPRI; pri--; )	1191	for (pri = NUMPRI; pri--; )
…		…
1060	{	1193	{
1061	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1194	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1062		1195
1063	if (expect_true (p->w))	1196	if (expect_true (p->w))
1064	{	1197	{
		1198	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1199
1065	p->w->pending = 0;	1200	p->w->pending = 0;
1066	EV_CB_INVOKE (p->w, p->events);	1201	EV_CB_INVOKE (p->w, p->events);
1067	}	1202	}
1068	}	1203	}
1069	}	1204	}
1070		1205
1071	inline void	1206	void inline_size
1072	timers_reify (EV_P)	1207	timers_reify (EV_P)
1073	{	1208	{
1074	while (timercnt && ((WT)timers [0])->at <= mn_now)	1209	while (timercnt && ((WT)timers [0])->at <= mn_now)
1075	{	1210	{
1076	struct ev_timer *w = timers [0];	1211	ev_timer *w = timers [0];
1077		1212
1078	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1213	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1079		1214
1080	/* first reschedule or stop timer */	1215	/* first reschedule or stop timer */
1081	if (w->repeat)	1216	if (w->repeat)
1082	{	1217	{
1083	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.));
…		…
1093		1228
1094	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1229	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1095	}	1230	}
1096	}	1231	}
1097		1232
1098	#if EV_PERIODICS	1233	#if EV_PERIODIC_ENABLE
1099	inline void	1234	void inline_size
1100	periodics_reify (EV_P)	1235	periodics_reify (EV_P)
1101	{	1236	{
1102	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1237	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1103	{	1238	{
1104	struct ev_periodic *w = periodics [0];	1239	ev_periodic *w = periodics [0];
1105		1240
1106	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1241	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1107		1242
1108	/* first reschedule or stop timer */	1243	/* first reschedule or stop timer */
1109	if (w->reschedule_cb)	1244	if (w->reschedule_cb)
1110	{	1245	{
1111	((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);
1112	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));
1113	downheap ((WT *)periodics, periodiccnt, 0);	1248	downheap ((WT *)periodics, periodiccnt, 0);
1114	}	1249	}
1115	else if (w->interval)	1250	else if (w->interval)
1116	{	1251	{
1117	((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;
1118	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));
1119	downheap ((WT *)periodics, periodiccnt, 0);	1255	downheap ((WT *)periodics, periodiccnt, 0);
1120	}	1256	}
1121	else	1257	else
1122	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1258	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1123		1259
1124	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1260	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1125	}	1261	}
1126	}	1262	}
1127		1263
1128	static void	1264	static void noinline
1129	periodics_reschedule (EV_P)	1265	periodics_reschedule (EV_P)
1130	{	1266	{
1131	int i;	1267	int i;
1132		1268
1133	/* adjust periodics after time jump */	1269	/* adjust periodics after time jump */
1134	for (i = 0; i < periodiccnt; ++i)	1270	for (i = 0; i < periodiccnt; ++i)
1135	{	1271	{
1136	struct ev_periodic *w = periodics [i];	1272	ev_periodic *w = periodics [i];
1137		1273
1138	if (w->reschedule_cb)	1274	if (w->reschedule_cb)
1139	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1275	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1140	else if (w->interval)	1276	else if (w->interval)
1141	((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;
1142	}	1278	}
1143		1279
1144	/* now rebuild the heap */	1280	/* now rebuild the heap */
1145	for (i = periodiccnt >> 1; i--; )	1281	for (i = periodiccnt >> 1; i--; )
1146	downheap ((WT *)periodics, periodiccnt, i);	1282	downheap ((WT *)periodics, periodiccnt, i);
1147	}	1283	}
1148	#endif	1284	#endif
1149		1285
1150	inline int	1286	#if EV_IDLE_ENABLE
1151	time_update_monotonic (EV_P)	1287	void inline_size
		1288	idle_reify (EV_P)
1152	{	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
1153	mn_now = get_clock ();	1319	mn_now = get_clock ();
1154		1320
		1321	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1322	/* interpolate in the meantime */
1155	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1323	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1156	{	1324	{
1157	ev_rt_now = rtmn_diff + mn_now;	1325	ev_rt_now = rtmn_diff + mn_now;
1158	return 0;	1326	return;
1159	}	1327	}
1160	else	1328
1161	{
1162	now_floor = mn_now;	1329	now_floor = mn_now;
1163	ev_rt_now = ev_time ();	1330	ev_rt_now = ev_time ();
1164	return 1;
1165	}
1166	}
1167		1331
1168	inline void	1332	/* loop a few times, before making important decisions.
1169	time_update (EV_P)	1333	* on the choice of "4": one iteration isn't enough,
1170	{	1334	* in case we get preempted during the calls to
1171	int i;	1335	* ev_time and get_clock. a second call is almost guaranteed
1172		1336	* to succeed in that case, though. and looping a few more times
1173	#if EV_USE_MONOTONIC	1337	* doesn't hurt either as we only do this on time-jumps or
1174	if (expect_true (have_monotonic))	1338	* in the unlikely event of having been preempted here.
1175	{	1339	*/
1176	if (time_update_monotonic (EV_A))	1340	for (i = 4; --i; )
1177	{	1341	{
1178	ev_tstamp odiff = rtmn_diff;
1179
1180	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1181	{
1182	rtmn_diff = ev_rt_now - mn_now;	1342	rtmn_diff = ev_rt_now - mn_now;
1183		1343
1184	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1344	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1185	return; /* all is well */	1345	return; /* all is well */
1186		1346
1187	ev_rt_now = ev_time ();	1347	ev_rt_now = ev_time ();
1188	mn_now = get_clock ();	1348	mn_now = get_clock ();
1189	now_floor = mn_now;	1349	now_floor = mn_now;
1190	}	1350	}
1191		1351
1192	# 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
1193	periodics_reschedule (EV_A);	1366	periodics_reschedule (EV_A);
1194	# endif	1367	#endif
1195	/* no timer adjustment, as the monotonic clock doesn't jump */
1196	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1197	}
1198	}
1199	else
1200	#endif
1201	{
1202	ev_rt_now = ev_time ();
1203
1204	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1205	{
1206	#if EV_PERIODICS
1207	periodics_reschedule (EV_A);
1208	#endif
1209
1210	/* 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 */
1211	for (i = 0; i < timercnt; ++i)	1369	for (i = 0; i < timercnt; ++i)
1212	((WT)timers [i])->at += ev_rt_now - mn_now;	1370	((WT)timers [i])->at += ev_rt_now - mn_now;
1213	}	1371	}
1214		1372
1215	mn_now = ev_rt_now;	1373	mn_now = ev_rt_now;
…		…
1231	static int loop_done;	1389	static int loop_done;
1232		1390
1233	void	1391	void
1234	ev_loop (EV_P_ int flags)	1392	ev_loop (EV_P_ int flags)
1235	{	1393	{
1236	double block;
1237	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1394	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1395	? EVUNLOOP_ONE
		1396	: EVUNLOOP_CANCEL;
1238		1397
1239	while (activecnt)	1398	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1399
		1400	do
1240	{	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
1241	/* queue check watchers (and execute them) */	1421	/* queue prepare watchers (and execute them) */
1242	if (expect_false (preparecnt))	1422	if (expect_false (preparecnt))
1243	{	1423	{
1244	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1424	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1245	call_pending (EV_A);	1425	call_pending (EV_A);
1246	}	1426	}
1247		1427
		1428	if (expect_false (!activecnt))
		1429	break;
		1430
1248	/* we might have forked, so reify kernel state if necessary */	1431	/* we might have forked, so reify kernel state if necessary */
1249	if (expect_false (postfork))	1432	if (expect_false (postfork))
1250	loop_fork (EV_A);	1433	loop_fork (EV_A);
1251		1434
1252	/* update fd-related kernel structures */	1435	/* update fd-related kernel structures */
1253	fd_reify (EV_A);	1436	fd_reify (EV_A);
1254		1437
1255	/* calculate blocking time */	1438	/* calculate blocking time */
		1439	{
		1440	ev_tstamp block;
1256		1441
1257	/* we only need this for !monotonic clock or timers, but as we basically	1442	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1258	always have timers, we just calculate it always */	1443	block = 0.; /* do not block at all */
1259	#if EV_USE_MONOTONIC
1260	if (expect_true (have_monotonic))
1261	time_update_monotonic (EV_A);
1262	else	1444	else
1263	#endif
1264	{	1445	{
1265	ev_rt_now = ev_time ();	1446	/* update time to cancel out callback processing overhead */
1266	mn_now = ev_rt_now;	1447	time_update (EV_A_ 1e100);
1267	}
1268		1448
1269	if (flags & EVLOOP_NONBLOCK || idlecnt)
1270	block = 0.;
1271	else
1272	{
1273	block = MAX_BLOCKTIME;	1449	block = MAX_BLOCKTIME;
1274		1450
1275	if (timercnt)	1451	if (timercnt)
1276	{	1452	{
1277	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1453	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1278	if (block > to) block = to;	1454	if (block > to) block = to;
1279	}	1455	}
1280		1456
1281	#if EV_PERIODICS	1457	#if EV_PERIODIC_ENABLE
1282	if (periodiccnt)	1458	if (periodiccnt)
1283	{	1459	{
1284	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;
1285	if (block > to) block = to;	1461	if (block > to) block = to;
1286	}	1462	}
1287	#endif	1463	#endif
1288		1464
1289	if (expect_false (block < 0.)) block = 0.;	1465	if (expect_false (block < 0.)) block = 0.;
1290	}	1466	}
1291		1467
		1468	++loop_count;
1292	method_poll (EV_A_ block);	1469	backend_poll (EV_A_ block);
1293		1470
1294	/* update ev_rt_now, do magic */	1471	/* update ev_rt_now, do magic */
1295	time_update (EV_A);	1472	time_update (EV_A_ block);
		1473	}
1296		1474
1297	/* queue pending timers and reschedule them */	1475	/* queue pending timers and reschedule them */
1298	timers_reify (EV_A); /* relative timers called last */	1476	timers_reify (EV_A); /* relative timers called last */
1299	#if EV_PERIODICS	1477	#if EV_PERIODIC_ENABLE
1300	periodics_reify (EV_A); /* absolute timers called first */	1478	periodics_reify (EV_A); /* absolute timers called first */
1301	#endif	1479	#endif
1302		1480
		1481	#if EV_IDLE_ENABLE
1303	/* queue idle watchers unless io or timers are pending */	1482	/* queue idle watchers unless other events are pending */
1304	if (idlecnt && !any_pending (EV_A))	1483	idle_reify (EV_A);
1305	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1484	#endif
1306		1485
1307	/* queue check watchers, to be executed first */	1486	/* queue check watchers, to be executed first */
1308	if (expect_false (checkcnt))	1487	if (expect_false (checkcnt))
1309	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1488	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1310		1489
1311	call_pending (EV_A);	1490	call_pending (EV_A);
1312		1491
1313	if (expect_false (loop_done))
1314	break;
1315	}	1492	}
		1493	while (expect_true (activecnt && !loop_done));
1316		1494
1317	if (loop_done != 2)	1495	if (loop_done == EVUNLOOP_ONE)
1318	loop_done = 0;	1496	loop_done = EVUNLOOP_CANCEL;
1319	}	1497	}
1320		1498
1321	void	1499	void
1322	ev_unloop (EV_P_ int how)	1500	ev_unloop (EV_P_ int how)
1323	{	1501	{
1324	loop_done = how;	1502	loop_done = how;
1325	}	1503	}
1326		1504
1327	/*****************************************************************************/	1505	/*****************************************************************************/
1328		1506
1329	inline void	1507	void inline_size
1330	wlist_add (WL *head, WL elem)	1508	wlist_add (WL *head, WL elem)
1331	{	1509	{
1332	elem->next = *head;	1510	elem->next = *head;
1333	*head = elem;	1511	*head = elem;
1334	}	1512	}
1335		1513
1336	inline void	1514	void inline_size
1337	wlist_del (WL *head, WL elem)	1515	wlist_del (WL *head, WL elem)
1338	{	1516	{
1339	while (*head)	1517	while (*head)
1340	{	1518	{
1341	if (*head == elem)	1519	if (*head == elem)
…		…
1346		1524
1347	head = &(*head)->next;	1525	head = &(*head)->next;
1348	}	1526	}
1349	}	1527	}
1350		1528
1351	inline void	1529	void inline_speed
1352	ev_clear_pending (EV_P_ W w)	1530	clear_pending (EV_P_ W w)
1353	{	1531	{
1354	if (w->pending)	1532	if (w->pending)
1355	{	1533	{
1356	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1534	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1357	w->pending = 0;	1535	w->pending = 0;
1358	}	1536	}
1359	}	1537	}
1360		1538
1361	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
1362	ev_start (EV_P_ W w, int active)	1566	ev_start (EV_P_ W w, int active)
1363	{	1567	{
1364	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1568	pri_adjust (EV_A_ w);
1365	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1366
1367	w->active = active;	1569	w->active = active;
1368	ev_ref (EV_A);	1570	ev_ref (EV_A);
1369	}	1571	}
1370		1572
1371	inline void	1573	void inline_size
1372	ev_stop (EV_P_ W w)	1574	ev_stop (EV_P_ W w)
1373	{	1575	{
1374	ev_unref (EV_A);	1576	ev_unref (EV_A);
1375	w->active = 0;	1577	w->active = 0;
1376	}	1578	}
1377		1579
1378	/*****************************************************************************/	1580	/*****************************************************************************/
1379		1581
1380	void	1582	void noinline
1381	ev_io_start (EV_P_ struct ev_io *w)	1583	ev_io_start (EV_P_ ev_io *w)
1382	{	1584	{
1383	int fd = w->fd;	1585	int fd = w->fd;
1384		1586
1385	if (expect_false (ev_is_active (w)))	1587	if (expect_false (ev_is_active (w)))
1386	return;	1588	return;
…		…
1392	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1594	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1393		1595
1394	fd_change (EV_A_ fd);	1596	fd_change (EV_A_ fd);
1395	}	1597	}
1396		1598
1397	void	1599	void noinline
1398	ev_io_stop (EV_P_ struct ev_io *w)	1600	ev_io_stop (EV_P_ ev_io *w)
1399	{	1601	{
1400	ev_clear_pending (EV_A_ (W)w);	1602	clear_pending (EV_A_ (W)w);
1401	if (expect_false (!ev_is_active (w)))	1603	if (expect_false (!ev_is_active (w)))
1402	return;	1604	return;
1403		1605
1404	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));
1405		1607
…		…
1407	ev_stop (EV_A_ (W)w);	1609	ev_stop (EV_A_ (W)w);
1408		1610
1409	fd_change (EV_A_ w->fd);	1611	fd_change (EV_A_ w->fd);
1410	}	1612	}
1411		1613
1412	void	1614	void noinline
1413	ev_timer_start (EV_P_ struct ev_timer *w)	1615	ev_timer_start (EV_P_ ev_timer *w)
1414	{	1616	{
1415	if (expect_false (ev_is_active (w)))	1617	if (expect_false (ev_is_active (w)))
1416	return;	1618	return;
1417		1619
1418	((WT)w)->at += mn_now;	1620	((WT)w)->at += mn_now;
1419		1621
1420	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.));
1421		1623
1422	ev_start (EV_A_ (W)w, ++timercnt);	1624	ev_start (EV_A_ (W)w, ++timercnt);
1423	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);	1625	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1424	timers [timercnt - 1] = w;	1626	timers [timercnt - 1] = w;
1425	upheap ((WT *)timers, timercnt - 1);	1627	upheap ((WT *)timers, timercnt - 1);
1426		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
1427	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1639	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1428	}
1429		1640
1430	void	1641	{
1431	ev_timer_stop (EV_P_ struct ev_timer *w)	1642	int active = ((W)w)->active;
1432	{
1433	ev_clear_pending (EV_A_ (W)w);
1434	if (expect_false (!ev_is_active (w)))
1435	return;
1436		1643
1437	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1438
1439	if (expect_true (((W)w)->active < timercnt--))	1644	if (expect_true (--active < --timercnt))
1440	{	1645	{
1441	timers [((W)w)->active - 1] = timers [timercnt];	1646	timers [active] = timers [timercnt];
1442	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1647	adjustheap ((WT *)timers, timercnt, active);
1443	}	1648	}
		1649	}
1444		1650
1445	((WT)w)->at -= mn_now;	1651	((WT)w)->at -= mn_now;
1446		1652
1447	ev_stop (EV_A_ (W)w);	1653	ev_stop (EV_A_ (W)w);
1448	}	1654	}
1449		1655
1450	void	1656	void noinline
1451	ev_timer_again (EV_P_ struct ev_timer *w)	1657	ev_timer_again (EV_P_ ev_timer *w)
1452	{	1658	{
1453	if (ev_is_active (w))	1659	if (ev_is_active (w))
1454	{	1660	{
1455	if (w->repeat)	1661	if (w->repeat)
1456	{	1662	{
…		…
1465	w->at = w->repeat;	1671	w->at = w->repeat;
1466	ev_timer_start (EV_A_ w);	1672	ev_timer_start (EV_A_ w);
1467	}	1673	}
1468	}	1674	}
1469		1675
1470	#if EV_PERIODICS	1676	#if EV_PERIODIC_ENABLE
1471	void	1677	void noinline
1472	ev_periodic_start (EV_P_ struct ev_periodic *w)	1678	ev_periodic_start (EV_P_ ev_periodic *w)
1473	{	1679	{
1474	if (expect_false (ev_is_active (w)))	1680	if (expect_false (ev_is_active (w)))
1475	return;	1681	return;
1476		1682
1477	if (w->reschedule_cb)	1683	if (w->reschedule_cb)
1478	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1684	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1479	else if (w->interval)	1685	else if (w->interval)
1480	{	1686	{
1481	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.));
1482	/* 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 */
1483	((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;
1484	}	1690	}
		1691	else
		1692	((WT)w)->at = w->offset;
1485		1693
1486	ev_start (EV_A_ (W)w, ++periodiccnt);	1694	ev_start (EV_A_ (W)w, ++periodiccnt);
1487	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1695	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1488	periodics [periodiccnt - 1] = w;	1696	periodics [periodiccnt - 1] = w;
1489	upheap ((WT *)periodics, periodiccnt - 1);	1697	upheap ((WT *)periodics, periodiccnt - 1);
1490		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
1491	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1709	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1492	}
1493		1710
1494	void	1711	{
1495	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1712	int active = ((W)w)->active;
1496	{
1497	ev_clear_pending (EV_A_ (W)w);
1498	if (expect_false (!ev_is_active (w)))
1499	return;
1500		1713
1501	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1502
1503	if (expect_true (((W)w)->active < periodiccnt--))	1714	if (expect_true (--active < --periodiccnt))
1504	{	1715	{
1505	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1716	periodics [active] = periodics [periodiccnt];
1506	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1717	adjustheap ((WT *)periodics, periodiccnt, active);
1507	}	1718	}
		1719	}
1508		1720
1509	ev_stop (EV_A_ (W)w);	1721	ev_stop (EV_A_ (W)w);
1510	}	1722	}
1511		1723
1512	void	1724	void noinline
1513	ev_periodic_again (EV_P_ struct ev_periodic *w)	1725	ev_periodic_again (EV_P_ ev_periodic *w)
1514	{	1726	{
1515	/* TODO: use adjustheap and recalculation */	1727	/* TODO: use adjustheap and recalculation */
1516	ev_periodic_stop (EV_A_ w);	1728	ev_periodic_stop (EV_A_ w);
1517	ev_periodic_start (EV_A_ w);	1729	ev_periodic_start (EV_A_ w);
1518	}	1730	}
1519	#endif	1731	#endif
1520		1732
1521	void
1522	ev_idle_start (EV_P_ struct ev_idle *w)
1523	{
1524	if (expect_false (ev_is_active (w)))
1525	return;
1526
1527	ev_start (EV_A_ (W)w, ++idlecnt);
1528	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1529	idles [idlecnt - 1] = w;
1530	}
1531
1532	void
1533	ev_idle_stop (EV_P_ struct ev_idle *w)
1534	{
1535	ev_clear_pending (EV_A_ (W)w);
1536	if (expect_false (!ev_is_active (w)))
1537	return;
1538
1539	idles [((W)w)->active - 1] = idles [--idlecnt];
1540	ev_stop (EV_A_ (W)w);
1541	}
1542
1543	void
1544	ev_prepare_start (EV_P_ struct ev_prepare *w)
1545	{
1546	if (expect_false (ev_is_active (w)))
1547	return;
1548
1549	ev_start (EV_A_ (W)w, ++preparecnt);
1550	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1551	prepares [preparecnt - 1] = w;
1552	}
1553
1554	void
1555	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1556	{
1557	ev_clear_pending (EV_A_ (W)w);
1558	if (expect_false (!ev_is_active (w)))
1559	return;
1560
1561	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1562	ev_stop (EV_A_ (W)w);
1563	}
1564
1565	void
1566	ev_check_start (EV_P_ struct ev_check *w)
1567	{
1568	if (expect_false (ev_is_active (w)))
1569	return;
1570
1571	ev_start (EV_A_ (W)w, ++checkcnt);
1572	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1573	checks [checkcnt - 1] = w;
1574	}
1575
1576	void
1577	ev_check_stop (EV_P_ struct ev_check *w)
1578	{
1579	ev_clear_pending (EV_A_ (W)w);
1580	if (expect_false (!ev_is_active (w)))
1581	return;
1582
1583	checks [((W)w)->active - 1] = checks [--checkcnt];
1584	ev_stop (EV_A_ (W)w);
1585	}
1586
1587	#ifndef SA_RESTART	1733	#ifndef SA_RESTART
1588	# define SA_RESTART 0	1734	# define SA_RESTART 0
1589	#endif	1735	#endif
1590		1736
1591	void	1737	void noinline
1592	ev_signal_start (EV_P_ struct ev_signal *w)	1738	ev_signal_start (EV_P_ ev_signal *w)
1593	{	1739	{
1594	#if EV_MULTIPLICITY	1740	#if EV_MULTIPLICITY
1595	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));
1596	#endif	1742	#endif
1597	if (expect_false (ev_is_active (w)))	1743	if (expect_false (ev_is_active (w)))
…		…
1615	sigaction (w->signum, &sa, 0);	1761	sigaction (w->signum, &sa, 0);
1616	#endif	1762	#endif
1617	}	1763	}
1618	}	1764	}
1619		1765
1620	void	1766	void noinline
1621	ev_signal_stop (EV_P_ struct ev_signal *w)	1767	ev_signal_stop (EV_P_ ev_signal *w)
1622	{	1768	{
1623	ev_clear_pending (EV_A_ (W)w);	1769	clear_pending (EV_A_ (W)w);
1624	if (expect_false (!ev_is_active (w)))	1770	if (expect_false (!ev_is_active (w)))
1625	return;	1771	return;
1626		1772
1627	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1773	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1628	ev_stop (EV_A_ (W)w);	1774	ev_stop (EV_A_ (W)w);
…		…
1630	if (!signals [w->signum - 1].head)	1776	if (!signals [w->signum - 1].head)
1631	signal (w->signum, SIG_DFL);	1777	signal (w->signum, SIG_DFL);
1632	}	1778	}
1633		1779
1634	void	1780	void
1635	ev_child_start (EV_P_ struct ev_child *w)	1781	ev_child_start (EV_P_ ev_child *w)
1636	{	1782	{
1637	#if EV_MULTIPLICITY	1783	#if EV_MULTIPLICITY
1638	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));
1639	#endif	1785	#endif
1640	if (expect_false (ev_is_active (w)))	1786	if (expect_false (ev_is_active (w)))
1641	return;	1787	return;
1642		1788
1643	ev_start (EV_A_ (W)w, 1);	1789	ev_start (EV_A_ (W)w, 1);
1644	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1790	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1645	}	1791	}
1646		1792
1647	void	1793	void
1648	ev_child_stop (EV_P_ struct ev_child *w)	1794	ev_child_stop (EV_P_ ev_child *w)
1649	{	1795	{
1650	ev_clear_pending (EV_A_ (W)w);	1796	clear_pending (EV_A_ (W)w);
1651	if (expect_false (!ev_is_active (w)))	1797	if (expect_false (!ev_is_active (w)))
1652	return;	1798	return;
1653		1799
1654	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1800	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1655	ev_stop (EV_A_ (W)w);	1801	ev_stop (EV_A_ (W)w);
1656	}	1802	}
1657		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
1658	/*****************************************************************************/	2226	/*****************************************************************************/
1659		2227
1660	struct ev_once	2228	struct ev_once
1661	{	2229	{
1662	struct ev_io io;	2230	ev_io io;
1663	struct ev_timer to;	2231	ev_timer to;
1664	void (*cb)(int revents, void *arg);	2232	void (*cb)(int revents, void *arg);
1665	void *arg;	2233	void *arg;
1666	};	2234	};
1667		2235
1668	static void	2236	static void
…		…
1677		2245
1678	cb (revents, arg);	2246	cb (revents, arg);
1679	}	2247	}
1680		2248
1681	static void	2249	static void
1682	once_cb_io (EV_P_ struct ev_io *w, int revents)	2250	once_cb_io (EV_P_ ev_io *w, int revents)
1683	{	2251	{
1684	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);
1685	}	2253	}
1686		2254
1687	static void	2255	static void
1688	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2256	once_cb_to (EV_P_ ev_timer *w, int revents)
1689	{	2257	{
1690	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);
1691	}	2259	}
1692		2260
1693	void	2261	void

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