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Comparing libev/ev.c (file contents):
Revision 1.132 by root, Fri Nov 23 10:36:30 2007 UTC vs.
Revision 1.181 by root, Wed Dec 12 00:17:08 2007 UTC

…		…
32	#ifdef __cplusplus	32	#ifdef __cplusplus
33	extern "C" {	33	extern "C" {
34	#endif	34	#endif
35		35
36	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
37	# include "config.h"	40	# include "config.h"
		41	# endif
38		42
39	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
40	# ifndef EV_USE_MONOTONIC	44	# ifndef EV_USE_MONOTONIC
41	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
42	# endif	46	# endif
…		…
90	# else	94	# else
91	# define EV_USE_PORT 0	95	# define EV_USE_PORT 0
92	# endif	96	# endif
93	# endif	97	# endif
94		98
		99	# ifndef EV_USE_INOTIFY
		100	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		101	# define EV_USE_INOTIFY 1
		102	# else
		103	# define EV_USE_INOTIFY 0
		104	# endif
		105	# endif
		106
95	#endif	107	#endif
96		108
97	#include <math.h>	109	#include <math.h>
98	#include <stdlib.h>	110	#include <stdlib.h>
99	#include <fcntl.h>	111	#include <fcntl.h>
…		…
106	#include <sys/types.h>	118	#include <sys/types.h>
107	#include <time.h>	119	#include <time.h>
108		120
109	#include <signal.h>	121	#include <signal.h>
110		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
111	#ifndef _WIN32	129	#ifndef _WIN32
112	# include <unistd.h>
113	# include <sys/time.h>	130	# include <sys/time.h>
114	# include <sys/wait.h>	131	# include <sys/wait.h>
		132	# include <unistd.h>
115	#else	133	#else
116	# define WIN32_LEAN_AND_MEAN	134	# define WIN32_LEAN_AND_MEAN
117	# include <windows.h>	135	# include <windows.h>
118	# ifndef EV_SELECT_IS_WINSOCKET	136	# ifndef EV_SELECT_IS_WINSOCKET
119	# define EV_SELECT_IS_WINSOCKET 1	137	# define EV_SELECT_IS_WINSOCKET 1
…		…
152		170
153	#ifndef EV_USE_PORT	171	#ifndef EV_USE_PORT
154	# define EV_USE_PORT 0	172	# define EV_USE_PORT 0
155	#endif	173	#endif
156		174
		175	#ifndef EV_USE_INOTIFY
		176	# define EV_USE_INOTIFY 0
		177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
		182	# else
		183	# define EV_PID_HASHSIZE 16
		184	# endif
		185	#endif
		186
		187	#ifndef EV_INOTIFY_HASHSIZE
		188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
		193	#endif
		194
157	/**/	195	/**/
158		196
159	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
160	# undef EV_USE_MONOTONIC	198	# undef EV_USE_MONOTONIC
161	# define EV_USE_MONOTONIC 0	199	# define EV_USE_MONOTONIC 0
…		…
168		206
169	#if EV_SELECT_IS_WINSOCKET	207	#if EV_SELECT_IS_WINSOCKET
170	# include <winsock.h>	208	# include <winsock.h>
171	#endif	209	#endif
172		210
		211	#if !EV_STAT_ENABLE
		212	# define EV_USE_INOTIFY 0
		213	#endif
		214
		215	#if EV_USE_INOTIFY
		216	# include <sys/inotify.h>
		217	#endif
		218
173	/**/	219	/**/
		220
		221	/*
		222	* This is used to avoid floating point rounding problems.
		223	* It is added to ev_rt_now when scheduling periodics
		224	* to ensure progress, time-wise, even when rounding
		225	* errors are against us.
		226	* This value is good at least till the year 4000.
		227	* Better solutions welcome.
		228	*/
		229	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
174		230
175	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	231	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
176	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	232	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
177	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
178	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */	233	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
179
180	#ifdef EV_H
181	# include EV_H
182	#else
183	# include "ev.h"
184	#endif
185		234
186	#if __GNUC__ >= 3	235	#if __GNUC__ >= 3
187	# define expect(expr,value) __builtin_expect ((expr),(value))	236	# define expect(expr,value) __builtin_expect ((expr),(value))
188	# define inline static inline	237	# define noinline __attribute__ ((noinline))
189	#else	238	#else
190	# define expect(expr,value) (expr)	239	# define expect(expr,value) (expr)
191	# define inline static	240	# define noinline
		241	# if __STDC_VERSION__ < 199901L
		242	# define inline
		243	# endif
192	#endif	244	#endif
193		245
194	#define expect_false(expr) expect ((expr) != 0, 0)	246	#define expect_false(expr) expect ((expr) != 0, 0)
195	#define expect_true(expr) expect ((expr) != 0, 1)	247	#define expect_true(expr) expect ((expr) != 0, 1)
		248	#define inline_size static inline
		249
		250	#if EV_MINIMAL
		251	# define inline_speed static noinline
		252	#else
		253	# define inline_speed static inline
		254	#endif
196		255
197	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	256	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
198	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	257	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
199		258
200	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	259	#define EMPTY /* required for microsofts broken pseudo-c compiler */
201	#define EMPTY2(a,b) /* used to suppress some warnings */	260	#define EMPTY2(a,b) /* used to suppress some warnings */
202		261
203	typedef struct ev_watcher *W;	262	typedef ev_watcher *W;
204	typedef struct ev_watcher_list *WL;	263	typedef ev_watcher_list *WL;
205	typedef struct ev_watcher_time *WT;	264	typedef ev_watcher_time *WT;
206		265
207	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	266	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
208		267
209	#ifdef _WIN32	268	#ifdef _WIN32
210	# include "ev_win32.c"	269	# include "ev_win32.c"
…		…
212		271
213	/*****************************************************************************/	272	/*****************************************************************************/
214		273
215	static void (*syserr_cb)(const char *msg);	274	static void (*syserr_cb)(const char *msg);
216		275
		276	void
217	void ev_set_syserr_cb (void (*cb)(const char *msg))	277	ev_set_syserr_cb (void (*cb)(const char *msg))
218	{	278	{
219	syserr_cb = cb;	279	syserr_cb = cb;
220	}	280	}
221		281
222	static void	282	static void noinline
223	syserr (const char *msg)	283	syserr (const char *msg)
224	{	284	{
225	if (!msg)	285	if (!msg)
226	msg = "(libev) system error";	286	msg = "(libev) system error";
227		287
…		…
234	}	294	}
235	}	295	}
236		296
237	static void *(*alloc)(void *ptr, long size);	297	static void *(*alloc)(void *ptr, long size);
238		298
		299	void
239	void ev_set_allocator (void *(*cb)(void *ptr, long size))	300	ev_set_allocator (void *(*cb)(void *ptr, long size))
240	{	301	{
241	alloc = cb;	302	alloc = cb;
242	}	303	}
243		304
244	static void *	305	inline_speed void *
245	ev_realloc (void *ptr, long size)	306	ev_realloc (void *ptr, long size)
246	{	307	{
247	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
248		309
249	if (!ptr && size)	310	if (!ptr && size)
…		…
273	typedef struct	334	typedef struct
274	{	335	{
275	W w;	336	W w;
276	int events;	337	int events;
277	} ANPENDING;	338	} ANPENDING;
		339
		340	#if EV_USE_INOTIFY
		341	typedef struct
		342	{
		343	WL head;
		344	} ANFS;
		345	#endif
278		346
279	#if EV_MULTIPLICITY	347	#if EV_MULTIPLICITY
280		348
281	struct ev_loop	349	struct ev_loop
282	{	350	{
…		…
316	gettimeofday (&tv, 0);	384	gettimeofday (&tv, 0);
317	return tv.tv_sec + tv.tv_usec * 1e-6;	385	return tv.tv_sec + tv.tv_usec * 1e-6;
318	#endif	386	#endif
319	}	387	}
320		388
321	inline ev_tstamp	389	ev_tstamp inline_size
322	get_clock (void)	390	get_clock (void)
323	{	391	{
324	#if EV_USE_MONOTONIC	392	#if EV_USE_MONOTONIC
325	if (expect_true (have_monotonic))	393	if (expect_true (have_monotonic))
326	{	394	{
…		…
339	{	407	{
340	return ev_rt_now;	408	return ev_rt_now;
341	}	409	}
342	#endif	410	#endif
343		411
344	#define array_roundsize(type,n) (((n) | 4) & ~3)	412	int inline_size
		413	array_nextsize (int elem, int cur, int cnt)
		414	{
		415	int ncur = cur + 1;
		416
		417	do
		418	ncur <<= 1;
		419	while (cnt > ncur);
		420
		421	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		422	if (elem * ncur > 4096)
		423	{
		424	ncur *= elem;
		425	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		426	ncur = ncur - sizeof (void *) * 4;
		427	ncur /= elem;
		428	}
		429
		430	return ncur;
		431	}
		432
		433	static noinline void *
		434	array_realloc (int elem, void *base, int *cur, int cnt)
		435	{
		436	*cur = array_nextsize (elem, *cur, cnt);
		437	return ev_realloc (base, elem * *cur);
		438	}
345		439
346	#define array_needsize(type,base,cur,cnt,init) \	440	#define array_needsize(type,base,cur,cnt,init) \
347	if (expect_false ((cnt) > cur)) \	441	if (expect_false ((cnt) > (cur))) \
348	{ \	442	{ \
349	int newcnt = cur; \	443	int ocur_ = (cur); \
350	do \	444	(base) = (type *)array_realloc \
351	{ \	445	(sizeof (type), (base), &(cur), (cnt)); \
352	newcnt = array_roundsize (type, newcnt << 1); \	446	init ((base) + (ocur_), (cur) - ocur_); \
353	} \
354	while ((cnt) > newcnt); \
355	\
356	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
357	init (base + cur, newcnt - cur); \
358	cur = newcnt; \
359	}	447	}
360		448
		449	#if 0
361	#define array_slim(type,stem) \	450	#define array_slim(type,stem) \
362	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	451	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
363	{ \	452	{ \
364	stem ## max = array_roundsize (stem ## cnt >> 1); \	453	stem ## max = array_roundsize (stem ## cnt >> 1); \
365	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	454	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
366	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	455	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
367	}	456	}
		457	#endif
368		458
369	#define array_free(stem, idx) \	459	#define array_free(stem, idx) \
370	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	460	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
371		461
372	/*****************************************************************************/	462	/*****************************************************************************/
373		463
374	static void	464	void noinline
		465	ev_feed_event (EV_P_ void *w, int revents)
		466	{
		467	W w_ = (W)w;
		468	int pri = ABSPRI (w_);
		469
		470	if (expect_false (w_->pending))
		471	pendings [pri][w_->pending - 1].events |= revents;
		472	else
		473	{
		474	w_->pending = ++pendingcnt [pri];
		475	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		476	pendings [pri][w_->pending - 1].w = w_;
		477	pendings [pri][w_->pending - 1].events = revents;
		478	}
		479	}
		480
		481	void inline_speed
		482	queue_events (EV_P_ W *events, int eventcnt, int type)
		483	{
		484	int i;
		485
		486	for (i = 0; i < eventcnt; ++i)
		487	ev_feed_event (EV_A_ events [i], type);
		488	}
		489
		490	/*****************************************************************************/
		491
		492	void inline_size
375	anfds_init (ANFD *base, int count)	493	anfds_init (ANFD *base, int count)
376	{	494	{
377	while (count--)	495	while (count--)
378	{	496	{
379	base->head = 0;	497	base->head = 0;
…		…
382		500
383	++base;	501	++base;
384	}	502	}
385	}	503	}
386		504
387	void	505	void inline_speed
388	ev_feed_event (EV_P_ void *w, int revents)
389	{
390	W w_ = (W)w;
391
392	if (expect_false (w_->pending))
393	{
394	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
395	return;
396	}
397
398	w_->pending = ++pendingcnt [ABSPRI (w_)];
399	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
400	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
401	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
402	}
403
404	static void
405	queue_events (EV_P_ W *events, int eventcnt, int type)
406	{
407	int i;
408
409	for (i = 0; i < eventcnt; ++i)
410	ev_feed_event (EV_A_ events [i], type);
411	}
412
413	inline void
414	fd_event (EV_P_ int fd, int revents)	506	fd_event (EV_P_ int fd, int revents)
415	{	507	{
416	ANFD *anfd = anfds + fd;	508	ANFD *anfd = anfds + fd;
417	struct ev_io *w;	509	ev_io *w;
418		510
419	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	511	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
420	{	512	{
421	int ev = w->events & revents;	513	int ev = w->events & revents;
422		514
423	if (ev)	515	if (ev)
424	ev_feed_event (EV_A_ (W)w, ev);	516	ev_feed_event (EV_A_ (W)w, ev);
…		…
426	}	518	}
427		519
428	void	520	void
429	ev_feed_fd_event (EV_P_ int fd, int revents)	521	ev_feed_fd_event (EV_P_ int fd, int revents)
430	{	522	{
		523	if (fd >= 0 && fd < anfdmax)
431	fd_event (EV_A_ fd, revents);	524	fd_event (EV_A_ fd, revents);
432	}	525	}
433		526
434	/*****************************************************************************/	527	void inline_size
435
436	inline void
437	fd_reify (EV_P)	528	fd_reify (EV_P)
438	{	529	{
439	int i;	530	int i;
440		531
441	for (i = 0; i < fdchangecnt; ++i)	532	for (i = 0; i < fdchangecnt; ++i)
442	{	533	{
443	int fd = fdchanges [i];	534	int fd = fdchanges [i];
444	ANFD *anfd = anfds + fd;	535	ANFD *anfd = anfds + fd;
445	struct ev_io *w;	536	ev_io *w;
446		537
447	int events = 0;	538	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	{
…		…
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--; )
…		…
527	return;	618	return;
528	}	619	}
529	}	620	}
530		621
531	/* usually called after fork if backend 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)
554	{	644	{
		645	int p = (k - 1) >> 1;
		646
		647	if (heap [p]->at <= w->at)
		648	break;
		649
555	heap [k] = heap [k >> 1];	650	heap [k] = heap [p];
556	((W)heap [k])->active = k + 1;	651	((W)heap [k])->active = k + 1;
557	k >>= 1;	652	k = p;
558	}	653	}
559		654
560	heap [k] = w;	655	heap [k] = w;
561	((W)heap [k])->active = k + 1;	656	((W)heap [k])->active = k + 1;
562
563	}	657	}
564		658
565	static void	659	void inline_speed
566	downheap (WT *heap, int N, int k)	660	downheap (WT *heap, int N, int k)
567	{	661	{
568	WT w = heap [k];	662	WT w = heap [k];
569		663
570	while (k < (N >> 1))	664	for (;;)
571	{	665	{
572	int j = k << 1;	666	int c = (k << 1) + 1;
573		667
574	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	668	if (c >= N)
575	++j;
576
577	if (w->at <= heap [j]->at)
578	break;	669	break;
579		670
		671	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		672	? 1 : 0;
		673
		674	if (w->at <= heap [c]->at)
		675	break;
		676
580	heap [k] = heap [j];	677	heap [k] = heap [c];
581	((W)heap [k])->active = k + 1;	678	((W)heap [k])->active = k + 1;
		679
582	k = j;	680	k = c;
583	}	681	}
584		682
585	heap [k] = w;	683	heap [k] = w;
586	((W)heap [k])->active = k + 1;	684	((W)heap [k])->active = k + 1;
587	}	685	}
588		686
589	inline void	687	void inline_size
590	adjustheap (WT *heap, int N, int k)	688	adjustheap (WT *heap, int N, int k)
591	{	689	{
592	upheap (heap, k);	690	upheap (heap, k);
593	downheap (heap, N, k);	691	downheap (heap, N, k);
594	}	692	}
…		…
604	static ANSIG *signals;	702	static ANSIG *signals;
605	static int signalmax;	703	static int signalmax;
606		704
607	static int sigpipe [2];	705	static int sigpipe [2];
608	static sig_atomic_t volatile gotsig;	706	static sig_atomic_t volatile gotsig;
609	static struct ev_io sigev;	707	static ev_io sigev;
610		708
611	static void	709	void inline_size
612	signals_init (ANSIG *base, int count)	710	signals_init (ANSIG *base, int count)
613	{	711	{
614	while (count--)	712	while (count--)
615	{	713	{
616	base->head = 0;	714	base->head = 0;
…		…
636	write (sigpipe [1], &signum, 1);	734	write (sigpipe [1], &signum, 1);
637	errno = old_errno;	735	errno = old_errno;
638	}	736	}
639	}	737	}
640		738
641	void	739	void noinline
642	ev_feed_signal_event (EV_P_ int signum)	740	ev_feed_signal_event (EV_P_ int signum)
643	{	741	{
644	WL w;	742	WL w;
645		743
646	#if EV_MULTIPLICITY	744	#if EV_MULTIPLICITY
…		…
657	for (w = signals [signum].head; w; w = w->next)	755	for (w = signals [signum].head; w; w = w->next)
658	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	756	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
659	}	757	}
660		758
661	static void	759	static void
662	sigcb (EV_P_ struct ev_io *iow, int revents)	760	sigcb (EV_P_ ev_io *iow, int revents)
663	{	761	{
664	int signum;	762	int signum;
665		763
666	read (sigpipe [0], &revents, 1);	764	read (sigpipe [0], &revents, 1);
667	gotsig = 0;	765	gotsig = 0;
…		…
669	for (signum = signalmax; signum--; )	767	for (signum = signalmax; signum--; )
670	if (signals [signum].gotsig)	768	if (signals [signum].gotsig)
671	ev_feed_signal_event (EV_A_ signum + 1);	769	ev_feed_signal_event (EV_A_ signum + 1);
672	}	770	}
673		771
674	static void	772	void inline_speed
675	fd_intern (int fd)	773	fd_intern (int fd)
676	{	774	{
677	#ifdef _WIN32	775	#ifdef _WIN32
678	int arg = 1;	776	int arg = 1;
679	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	777	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
681	fcntl (fd, F_SETFD, FD_CLOEXEC);	779	fcntl (fd, F_SETFD, FD_CLOEXEC);
682	fcntl (fd, F_SETFL, O_NONBLOCK);	780	fcntl (fd, F_SETFL, O_NONBLOCK);
683	#endif	781	#endif
684	}	782	}
685		783
686	static void	784	static void noinline
687	siginit (EV_P)	785	siginit (EV_P)
688	{	786	{
689	fd_intern (sigpipe [0]);	787	fd_intern (sigpipe [0]);
690	fd_intern (sigpipe [1]);	788	fd_intern (sigpipe [1]);
691		789
…		…
694	ev_unref (EV_A); /* child watcher should not keep loop alive */	792	ev_unref (EV_A); /* child watcher should not keep loop alive */
695	}	793	}
696		794
697	/*****************************************************************************/	795	/*****************************************************************************/
698		796
699	static struct ev_child *childs [PID_HASHSIZE];	797	static ev_child *childs [EV_PID_HASHSIZE];
700		798
701	#ifndef _WIN32	799	#ifndef _WIN32
702		800
703	static struct ev_signal childev;	801	static ev_signal childev;
		802
		803	void inline_speed
		804	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		805	{
		806	ev_child *w;
		807
		808	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		809	if (w->pid == pid || !w->pid)
		810	{
		811	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		812	w->rpid = pid;
		813	w->rstatus = status;
		814	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		815	}
		816	}
704		817
705	#ifndef WCONTINUED	818	#ifndef WCONTINUED
706	# define WCONTINUED 0	819	# define WCONTINUED 0
707	#endif	820	#endif
708		821
709	static void	822	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)	823	childcb (EV_P_ ev_signal *sw, int revents)
726	{	824	{
727	int pid, status;	825	int pid, status;
728		826
		827	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
729	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	828	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
730	{	829	if (!WCONTINUED
		830	|| errno != EINVAL
		831	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		832	return;
		833
731	/* make sure we are called again until all childs have been reaped */	834	/* make sure we are called again until all childs have been reaped */
732	/* we need to do it this way so that the callback gets called before we continue */	835	/* we need to do it this way so that the callback gets called before we continue */
733	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	836	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
734		837
735	child_reap (EV_A_ sw, pid, pid, status);	838	child_reap (EV_A_ sw, pid, pid, status);
		839	if (EV_PID_HASHSIZE > 1)
736	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	840	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
737	}
738	}	841	}
739		842
740	#endif	843	#endif
741		844
742	/*****************************************************************************/	845	/*****************************************************************************/
…		…
768	{	871	{
769	return EV_VERSION_MINOR;	872	return EV_VERSION_MINOR;
770	}	873	}
771		874
772	/* return true if we are running with elevated privileges and should ignore env variables */	875	/* return true if we are running with elevated privileges and should ignore env variables */
773	static int	876	int inline_size
774	enable_secure (void)	877	enable_secure (void)
775	{	878	{
776	#ifdef _WIN32	879	#ifdef _WIN32
777	return 0;	880	return 0;
778	#else	881	#else
…		…
812		915
813	return flags;	916	return flags;
814	}	917	}
815		918
816	unsigned int	919	unsigned int
		920	ev_embeddable_backends (void)
		921	{
		922	return EVBACKEND_EPOLL
		923	| EVBACKEND_KQUEUE
		924	| EVBACKEND_PORT;
		925	}
		926
		927	unsigned int
817	ev_backend (EV_P)	928	ev_backend (EV_P)
818	{	929	{
819	return backend;	930	return backend;
820	}	931	}
821		932
822	static void	933	unsigned int
		934	ev_loop_count (EV_P)
		935	{
		936	return loop_count;
		937	}
		938
		939	static void noinline
823	loop_init (EV_P_ unsigned int flags)	940	loop_init (EV_P_ unsigned int flags)
824	{	941	{
825	if (!backend)	942	if (!backend)
826	{	943	{
827	#if EV_USE_MONOTONIC	944	#if EV_USE_MONOTONIC
…		…
835	ev_rt_now = ev_time ();	952	ev_rt_now = ev_time ();
836	mn_now = get_clock ();	953	mn_now = get_clock ();
837	now_floor = mn_now;	954	now_floor = mn_now;
838	rtmn_diff = ev_rt_now - mn_now;	955	rtmn_diff = ev_rt_now - mn_now;
839		956
		957	/* pid check not overridable via env */
		958	#ifndef _WIN32
		959	if (flags & EVFLAG_FORKCHECK)
		960	curpid = getpid ();
		961	#endif
		962
840	if (!(flags & EVFLAG_NOENV)	963	if (!(flags & EVFLAG_NOENV)
841	&& !enable_secure ()	964	&& !enable_secure ()
842	&& getenv ("LIBEV_FLAGS"))	965	&& getenv ("LIBEV_FLAGS"))
843	flags = atoi (getenv ("LIBEV_FLAGS"));	966	flags = atoi (getenv ("LIBEV_FLAGS"));
844		967
845	if (!(flags & 0x0000ffffUL))	968	if (!(flags & 0x0000ffffUL))
846	flags |= ev_recommended_backends ();	969	flags |= ev_recommended_backends ();
847		970
848	backend = 0;	971	backend = 0;
		972	backend_fd = -1;
		973	#if EV_USE_INOTIFY
		974	fs_fd = -2;
		975	#endif
		976
849	#if EV_USE_PORT	977	#if EV_USE_PORT
850	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	978	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
851	#endif	979	#endif
852	#if EV_USE_KQUEUE	980	#if EV_USE_KQUEUE
853	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	981	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
865	ev_init (&sigev, sigcb);	993	ev_init (&sigev, sigcb);
866	ev_set_priority (&sigev, EV_MAXPRI);	994	ev_set_priority (&sigev, EV_MAXPRI);
867	}	995	}
868	}	996	}
869		997
870	static void	998	static void noinline
871	loop_destroy (EV_P)	999	loop_destroy (EV_P)
872	{	1000	{
873	int i;	1001	int i;
		1002
		1003	#if EV_USE_INOTIFY
		1004	if (fs_fd >= 0)
		1005	close (fs_fd);
		1006	#endif
		1007
		1008	if (backend_fd >= 0)
		1009	close (backend_fd);
874		1010
875	#if EV_USE_PORT	1011	#if EV_USE_PORT
876	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1012	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
877	#endif	1013	#endif
878	#if EV_USE_KQUEUE	1014	#if EV_USE_KQUEUE
…		…
887	#if EV_USE_SELECT	1023	#if EV_USE_SELECT
888	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1024	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
889	#endif	1025	#endif
890		1026
891	for (i = NUMPRI; i--; )	1027	for (i = NUMPRI; i--; )
		1028	{
892	array_free (pending, [i]);	1029	array_free (pending, [i]);
		1030	#if EV_IDLE_ENABLE
		1031	array_free (idle, [i]);
		1032	#endif
		1033	}
893		1034
894	/* have to use the microsoft-never-gets-it-right macro */	1035	/* have to use the microsoft-never-gets-it-right macro */
895	array_free (fdchange, EMPTY0);	1036	array_free (fdchange, EMPTY);
896	array_free (timer, EMPTY0);	1037	array_free (timer, EMPTY);
897	#if EV_PERIODICS	1038	#if EV_PERIODIC_ENABLE
898	array_free (periodic, EMPTY0);	1039	array_free (periodic, EMPTY);
899	#endif	1040	#endif
900	array_free (idle, EMPTY0);
901	array_free (prepare, EMPTY0);	1041	array_free (prepare, EMPTY);
902	array_free (check, EMPTY0);	1042	array_free (check, EMPTY);
903		1043
904	backend = 0;	1044	backend = 0;
905	}	1045	}
906		1046
907	static void	1047	void inline_size infy_fork (EV_P);
		1048
		1049	void inline_size
908	loop_fork (EV_P)	1050	loop_fork (EV_P)
909	{	1051	{
910	#if EV_USE_PORT	1052	#if EV_USE_PORT
911	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1053	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
912	#endif	1054	#endif
913	#if EV_USE_KQUEUE	1055	#if EV_USE_KQUEUE
914	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1056	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
915	#endif	1057	#endif
916	#if EV_USE_EPOLL	1058	#if EV_USE_EPOLL
917	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1059	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1060	#endif
		1061	#if EV_USE_INOTIFY
		1062	infy_fork (EV_A);
918	#endif	1063	#endif
919		1064
920	if (ev_is_active (&sigev))	1065	if (ev_is_active (&sigev))
921	{	1066	{
922	/* default loop */	1067	/* default loop */
…		…
1038	postfork = 1;	1183	postfork = 1;
1039	}	1184	}
1040		1185
1041	/*****************************************************************************/	1186	/*****************************************************************************/
1042		1187
1043	static int	1188	void
1044	any_pending (EV_P)	1189	ev_invoke (EV_P_ void *w, int revents)
1045	{	1190	{
1046	int pri;	1191	EV_CB_INVOKE ((W)w, revents);
1047
1048	for (pri = NUMPRI; pri--; )
1049	if (pendingcnt [pri])
1050	return 1;
1051
1052	return 0;
1053	}	1192	}
1054		1193
1055	inline void	1194	void inline_speed
1056	call_pending (EV_P)	1195	call_pending (EV_P)
1057	{	1196	{
1058	int pri;	1197	int pri;
1059		1198
1060	for (pri = NUMPRI; pri--; )	1199	for (pri = NUMPRI; pri--; )
…		…
1062	{	1201	{
1063	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1202	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1064		1203
1065	if (expect_true (p->w))	1204	if (expect_true (p->w))
1066	{	1205	{
		1206	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1207
1067	p->w->pending = 0;	1208	p->w->pending = 0;
1068	EV_CB_INVOKE (p->w, p->events);	1209	EV_CB_INVOKE (p->w, p->events);
1069	}	1210	}
1070	}	1211	}
1071	}	1212	}
1072		1213
1073	inline void	1214	void inline_size
1074	timers_reify (EV_P)	1215	timers_reify (EV_P)
1075	{	1216	{
1076	while (timercnt && ((WT)timers [0])->at <= mn_now)	1217	while (timercnt && ((WT)timers [0])->at <= mn_now)
1077	{	1218	{
1078	struct ev_timer *w = timers [0];	1219	ev_timer *w = (ev_timer *)timers [0];
1079		1220
1080	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1221	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1081		1222
1082	/* first reschedule or stop timer */	1223	/* first reschedule or stop timer */
1083	if (w->repeat)	1224	if (w->repeat)
1084	{	1225	{
1085	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1226	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1086		1227
1087	((WT)w)->at += w->repeat;	1228	((WT)w)->at += w->repeat;
1088	if (((WT)w)->at < mn_now)	1229	if (((WT)w)->at < mn_now)
1089	((WT)w)->at = mn_now;	1230	((WT)w)->at = mn_now;
1090		1231
1091	downheap ((WT *)timers, timercnt, 0);	1232	downheap (timers, timercnt, 0);
1092	}	1233	}
1093	else	1234	else
1094	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1235	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1095		1236
1096	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1237	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1097	}	1238	}
1098	}	1239	}
1099		1240
1100	#if EV_PERIODICS	1241	#if EV_PERIODIC_ENABLE
1101	inline void	1242	void inline_size
1102	periodics_reify (EV_P)	1243	periodics_reify (EV_P)
1103	{	1244	{
1104	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1245	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1105	{	1246	{
1106	struct ev_periodic *w = periodics [0];	1247	ev_periodic *w = (ev_periodic *)periodics [0];
1107		1248
1108	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1249	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1109		1250
1110	/* first reschedule or stop timer */	1251	/* first reschedule or stop timer */
1111	if (w->reschedule_cb)	1252	if (w->reschedule_cb)
1112	{	1253	{
1113	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1254	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1114	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1255	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1115	downheap ((WT *)periodics, periodiccnt, 0);	1256	downheap (periodics, periodiccnt, 0);
1116	}	1257	}
1117	else if (w->interval)	1258	else if (w->interval)
1118	{	1259	{
1119	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1260	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1261	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1120	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1262	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1121	downheap ((WT *)periodics, periodiccnt, 0);	1263	downheap (periodics, periodiccnt, 0);
1122	}	1264	}
1123	else	1265	else
1124	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1266	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1125		1267
1126	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1268	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1127	}	1269	}
1128	}	1270	}
1129		1271
1130	static void	1272	static void noinline
1131	periodics_reschedule (EV_P)	1273	periodics_reschedule (EV_P)
1132	{	1274	{
1133	int i;	1275	int i;
1134		1276
1135	/* adjust periodics after time jump */	1277	/* adjust periodics after time jump */
1136	for (i = 0; i < periodiccnt; ++i)	1278	for (i = 0; i < periodiccnt; ++i)
1137	{	1279	{
1138	struct ev_periodic *w = periodics [i];	1280	ev_periodic *w = (ev_periodic *)periodics [i];
1139		1281
1140	if (w->reschedule_cb)	1282	if (w->reschedule_cb)
1141	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1283	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1142	else if (w->interval)	1284	else if (w->interval)
1143	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1285	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1144	}	1286	}
1145		1287
1146	/* now rebuild the heap */	1288	/* now rebuild the heap */
1147	for (i = periodiccnt >> 1; i--; )	1289	for (i = periodiccnt >> 1; i--; )
1148	downheap ((WT *)periodics, periodiccnt, i);	1290	downheap (periodics, periodiccnt, i);
1149	}	1291	}
1150	#endif	1292	#endif
1151		1293
1152	inline int	1294	#if EV_IDLE_ENABLE
1153	time_update_monotonic (EV_P)	1295	void inline_size
		1296	idle_reify (EV_P)
1154	{	1297	{
		1298	if (expect_false (idleall))
		1299	{
		1300	int pri;
		1301
		1302	for (pri = NUMPRI; pri--; )
		1303	{
		1304	if (pendingcnt [pri])
		1305	break;
		1306
		1307	if (idlecnt [pri])
		1308	{
		1309	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1310	break;
		1311	}
		1312	}
		1313	}
		1314	}
		1315	#endif
		1316
		1317	void inline_speed
		1318	time_update (EV_P_ ev_tstamp max_block)
		1319	{
		1320	int i;
		1321
		1322	#if EV_USE_MONOTONIC
		1323	if (expect_true (have_monotonic))
		1324	{
		1325	ev_tstamp odiff = rtmn_diff;
		1326
1155	mn_now = get_clock ();	1327	mn_now = get_clock ();
1156		1328
		1329	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1330	/* interpolate in the meantime */
1157	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1331	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1158	{	1332	{
1159	ev_rt_now = rtmn_diff + mn_now;	1333	ev_rt_now = rtmn_diff + mn_now;
1160	return 0;	1334	return;
1161	}	1335	}
1162	else	1336
1163	{
1164	now_floor = mn_now;	1337	now_floor = mn_now;
1165	ev_rt_now = ev_time ();	1338	ev_rt_now = ev_time ();
1166	return 1;
1167	}
1168	}
1169		1339
1170	inline void	1340	/* loop a few times, before making important decisions.
1171	time_update (EV_P)	1341	* on the choice of "4": one iteration isn't enough,
1172	{	1342	* in case we get preempted during the calls to
1173	int i;	1343	* ev_time and get_clock. a second call is almost guaranteed
1174		1344	* to succeed in that case, though. and looping a few more times
1175	#if EV_USE_MONOTONIC	1345	* doesn't hurt either as we only do this on time-jumps or
1176	if (expect_true (have_monotonic))	1346	* in the unlikely event of having been preempted here.
1177	{	1347	*/
1178	if (time_update_monotonic (EV_A))	1348	for (i = 4; --i; )
1179	{	1349	{
1180	ev_tstamp odiff = rtmn_diff;
1181
1182	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1183	{
1184	rtmn_diff = ev_rt_now - mn_now;	1350	rtmn_diff = ev_rt_now - mn_now;
1185		1351
1186	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1352	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1187	return; /* all is well */	1353	return; /* all is well */
1188		1354
1189	ev_rt_now = ev_time ();	1355	ev_rt_now = ev_time ();
1190	mn_now = get_clock ();	1356	mn_now = get_clock ();
1191	now_floor = mn_now;	1357	now_floor = mn_now;
1192	}	1358	}
1193		1359
1194	# if EV_PERIODICS	1360	# if EV_PERIODIC_ENABLE
		1361	periodics_reschedule (EV_A);
		1362	# endif
		1363	/* no timer adjustment, as the monotonic clock doesn't jump */
		1364	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1365	}
		1366	else
		1367	#endif
		1368	{
		1369	ev_rt_now = ev_time ();
		1370
		1371	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1372	{
		1373	#if EV_PERIODIC_ENABLE
1195	periodics_reschedule (EV_A);	1374	periodics_reschedule (EV_A);
1196	# endif	1375	#endif
1197	/* no timer adjustment, as the monotonic clock doesn't jump */
1198	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1199	}
1200	}
1201	else
1202	#endif
1203	{
1204	ev_rt_now = ev_time ();
1205
1206	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1207	{
1208	#if EV_PERIODICS
1209	periodics_reschedule (EV_A);
1210	#endif
1211
1212	/* adjust timers. this is easy, as the offset is the same for all */	1376	/* adjust timers. this is easy, as the offset is the same for all of them */
1213	for (i = 0; i < timercnt; ++i)	1377	for (i = 0; i < timercnt; ++i)
1214	((WT)timers [i])->at += ev_rt_now - mn_now;	1378	((WT)timers [i])->at += ev_rt_now - mn_now;
1215	}	1379	}
1216		1380
1217	mn_now = ev_rt_now;	1381	mn_now = ev_rt_now;
…		…
1233	static int loop_done;	1397	static int loop_done;
1234		1398
1235	void	1399	void
1236	ev_loop (EV_P_ int flags)	1400	ev_loop (EV_P_ int flags)
1237	{	1401	{
1238	double block;
1239	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1402	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1403	? EVUNLOOP_ONE
		1404	: EVUNLOOP_CANCEL;
1240		1405
1241	while (activecnt)	1406	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1407
		1408	do
1242	{	1409	{
		1410	#ifndef _WIN32
		1411	if (expect_false (curpid)) /* penalise the forking check even more */
		1412	if (expect_false (getpid () != curpid))
		1413	{
		1414	curpid = getpid ();
		1415	postfork = 1;
		1416	}
		1417	#endif
		1418
		1419	#if EV_FORK_ENABLE
		1420	/* we might have forked, so queue fork handlers */
		1421	if (expect_false (postfork))
		1422	if (forkcnt)
		1423	{
		1424	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1425	call_pending (EV_A);
		1426	}
		1427	#endif
		1428
1243	/* queue check watchers (and execute them) */	1429	/* queue prepare watchers (and execute them) */
1244	if (expect_false (preparecnt))	1430	if (expect_false (preparecnt))
1245	{	1431	{
1246	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1432	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1247	call_pending (EV_A);	1433	call_pending (EV_A);
1248	}	1434	}
1249		1435
		1436	if (expect_false (!activecnt))
		1437	break;
		1438
1250	/* we might have forked, so reify kernel state if necessary */	1439	/* we might have forked, so reify kernel state if necessary */
1251	if (expect_false (postfork))	1440	if (expect_false (postfork))
1252	loop_fork (EV_A);	1441	loop_fork (EV_A);
1253		1442
1254	/* update fd-related kernel structures */	1443	/* update fd-related kernel structures */
1255	fd_reify (EV_A);	1444	fd_reify (EV_A);
1256		1445
1257	/* calculate blocking time */	1446	/* calculate blocking time */
		1447	{
		1448	ev_tstamp block;
1258		1449
1259	/* we only need this for !monotonic clock or timers, but as we basically	1450	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1260	always have timers, we just calculate it always */	1451	block = 0.; /* do not block at all */
1261	#if EV_USE_MONOTONIC
1262	if (expect_true (have_monotonic))
1263	time_update_monotonic (EV_A);
1264	else	1452	else
1265	#endif
1266	{	1453	{
1267	ev_rt_now = ev_time ();	1454	/* update time to cancel out callback processing overhead */
1268	mn_now = ev_rt_now;	1455	time_update (EV_A_ 1e100);
1269	}
1270		1456
1271	if (flags & EVLOOP_NONBLOCK || idlecnt)
1272	block = 0.;
1273	else
1274	{
1275	block = MAX_BLOCKTIME;	1457	block = MAX_BLOCKTIME;
1276		1458
1277	if (timercnt)	1459	if (timercnt)
1278	{	1460	{
1279	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1461	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1280	if (block > to) block = to;	1462	if (block > to) block = to;
1281	}	1463	}
1282		1464
1283	#if EV_PERIODICS	1465	#if EV_PERIODIC_ENABLE
1284	if (periodiccnt)	1466	if (periodiccnt)
1285	{	1467	{
1286	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1468	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1287	if (block > to) block = to;	1469	if (block > to) block = to;
1288	}	1470	}
1289	#endif	1471	#endif
1290		1472
1291	if (expect_false (block < 0.)) block = 0.;	1473	if (expect_false (block < 0.)) block = 0.;
1292	}	1474	}
1293		1475
		1476	++loop_count;
1294	backend_poll (EV_A_ block);	1477	backend_poll (EV_A_ block);
1295		1478
1296	/* update ev_rt_now, do magic */	1479	/* update ev_rt_now, do magic */
1297	time_update (EV_A);	1480	time_update (EV_A_ block);
		1481	}
1298		1482
1299	/* queue pending timers and reschedule them */	1483	/* queue pending timers and reschedule them */
1300	timers_reify (EV_A); /* relative timers called last */	1484	timers_reify (EV_A); /* relative timers called last */
1301	#if EV_PERIODICS	1485	#if EV_PERIODIC_ENABLE
1302	periodics_reify (EV_A); /* absolute timers called first */	1486	periodics_reify (EV_A); /* absolute timers called first */
1303	#endif	1487	#endif
1304		1488
		1489	#if EV_IDLE_ENABLE
1305	/* queue idle watchers unless io or timers are pending */	1490	/* queue idle watchers unless other events are pending */
1306	if (idlecnt && !any_pending (EV_A))	1491	idle_reify (EV_A);
1307	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1492	#endif
1308		1493
1309	/* queue check watchers, to be executed first */	1494	/* queue check watchers, to be executed first */
1310	if (expect_false (checkcnt))	1495	if (expect_false (checkcnt))
1311	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1496	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1312		1497
1313	call_pending (EV_A);	1498	call_pending (EV_A);
1314		1499
1315	if (expect_false (loop_done))
1316	break;
1317	}	1500	}
		1501	while (expect_true (activecnt && !loop_done));
1318		1502
1319	if (loop_done != 2)	1503	if (loop_done == EVUNLOOP_ONE)
1320	loop_done = 0;	1504	loop_done = EVUNLOOP_CANCEL;
1321	}	1505	}
1322		1506
1323	void	1507	void
1324	ev_unloop (EV_P_ int how)	1508	ev_unloop (EV_P_ int how)
1325	{	1509	{
1326	loop_done = how;	1510	loop_done = how;
1327	}	1511	}
1328		1512
1329	/*****************************************************************************/	1513	/*****************************************************************************/
1330		1514
1331	inline void	1515	void inline_size
1332	wlist_add (WL *head, WL elem)	1516	wlist_add (WL *head, WL elem)
1333	{	1517	{
1334	elem->next = *head;	1518	elem->next = *head;
1335	*head = elem;	1519	*head = elem;
1336	}	1520	}
1337		1521
1338	inline void	1522	void inline_size
1339	wlist_del (WL *head, WL elem)	1523	wlist_del (WL *head, WL elem)
1340	{	1524	{
1341	while (*head)	1525	while (*head)
1342	{	1526	{
1343	if (*head == elem)	1527	if (*head == elem)
…		…
1348		1532
1349	head = &(*head)->next;	1533	head = &(*head)->next;
1350	}	1534	}
1351	}	1535	}
1352		1536
1353	inline void	1537	void inline_speed
1354	ev_clear_pending (EV_P_ W w)	1538	clear_pending (EV_P_ W w)
1355	{	1539	{
1356	if (w->pending)	1540	if (w->pending)
1357	{	1541	{
1358	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1542	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1359	w->pending = 0;	1543	w->pending = 0;
1360	}	1544	}
1361	}	1545	}
1362		1546
1363	inline void	1547	int
		1548	ev_clear_pending (EV_P_ void *w)
		1549	{
		1550	W w_ = (W)w;
		1551	int pending = w_->pending;
		1552
		1553	if (expect_true (pending))
		1554	{
		1555	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1556	w_->pending = 0;
		1557	p->w = 0;
		1558	return p->events;
		1559	}
		1560	else
		1561	return 0;
		1562	}
		1563
		1564	void inline_size
		1565	pri_adjust (EV_P_ W w)
		1566	{
		1567	int pri = w->priority;
		1568	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1569	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1570	w->priority = pri;
		1571	}
		1572
		1573	void inline_speed
1364	ev_start (EV_P_ W w, int active)	1574	ev_start (EV_P_ W w, int active)
1365	{	1575	{
1366	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1576	pri_adjust (EV_A_ w);
1367	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1368
1369	w->active = active;	1577	w->active = active;
1370	ev_ref (EV_A);	1578	ev_ref (EV_A);
1371	}	1579	}
1372		1580
1373	inline void	1581	void inline_size
1374	ev_stop (EV_P_ W w)	1582	ev_stop (EV_P_ W w)
1375	{	1583	{
1376	ev_unref (EV_A);	1584	ev_unref (EV_A);
1377	w->active = 0;	1585	w->active = 0;
1378	}	1586	}
1379		1587
1380	/*****************************************************************************/	1588	/*****************************************************************************/
1381		1589
1382	void	1590	void noinline
1383	ev_io_start (EV_P_ struct ev_io *w)	1591	ev_io_start (EV_P_ ev_io *w)
1384	{	1592	{
1385	int fd = w->fd;	1593	int fd = w->fd;
1386		1594
1387	if (expect_false (ev_is_active (w)))	1595	if (expect_false (ev_is_active (w)))
1388	return;	1596	return;
…		…
1394	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1602	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1395		1603
1396	fd_change (EV_A_ fd);	1604	fd_change (EV_A_ fd);
1397	}	1605	}
1398		1606
1399	void	1607	void noinline
1400	ev_io_stop (EV_P_ struct ev_io *w)	1608	ev_io_stop (EV_P_ ev_io *w)
1401	{	1609	{
1402	ev_clear_pending (EV_A_ (W)w);	1610	clear_pending (EV_A_ (W)w);
1403	if (expect_false (!ev_is_active (w)))	1611	if (expect_false (!ev_is_active (w)))
1404	return;	1612	return;
1405		1613
1406	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1614	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1407		1615
…		…
1409	ev_stop (EV_A_ (W)w);	1617	ev_stop (EV_A_ (W)w);
1410		1618
1411	fd_change (EV_A_ w->fd);	1619	fd_change (EV_A_ w->fd);
1412	}	1620	}
1413		1621
1414	void	1622	void noinline
1415	ev_timer_start (EV_P_ struct ev_timer *w)	1623	ev_timer_start (EV_P_ ev_timer *w)
1416	{	1624	{
1417	if (expect_false (ev_is_active (w)))	1625	if (expect_false (ev_is_active (w)))
1418	return;	1626	return;
1419		1627
1420	((WT)w)->at += mn_now;	1628	((WT)w)->at += mn_now;
1421		1629
1422	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1630	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1423		1631
1424	ev_start (EV_A_ (W)w, ++timercnt);	1632	ev_start (EV_A_ (W)w, ++timercnt);
1425	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);	1633	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1426	timers [timercnt - 1] = w;	1634	timers [timercnt - 1] = (WT)w;
1427	upheap ((WT *)timers, timercnt - 1);	1635	upheap (timers, timercnt - 1);
1428		1636
1429	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1637	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1430	}	1638	}
1431		1639
1432	void	1640	void noinline
1433	ev_timer_stop (EV_P_ struct ev_timer *w)	1641	ev_timer_stop (EV_P_ ev_timer *w)
1434	{	1642	{
1435	ev_clear_pending (EV_A_ (W)w);	1643	clear_pending (EV_A_ (W)w);
1436	if (expect_false (!ev_is_active (w)))	1644	if (expect_false (!ev_is_active (w)))
1437	return;	1645	return;
1438		1646
1439	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1647	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1440		1648
		1649	{
		1650	int active = ((W)w)->active;
		1651
1441	if (expect_true (((W)w)->active < timercnt--))	1652	if (expect_true (--active < --timercnt))
1442	{	1653	{
1443	timers [((W)w)->active - 1] = timers [timercnt];	1654	timers [active] = timers [timercnt];
1444	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1655	adjustheap (timers, timercnt, active);
1445	}	1656	}
		1657	}
1446		1658
1447	((WT)w)->at -= mn_now;	1659	((WT)w)->at -= mn_now;
1448		1660
1449	ev_stop (EV_A_ (W)w);	1661	ev_stop (EV_A_ (W)w);
1450	}	1662	}
1451		1663
1452	void	1664	void noinline
1453	ev_timer_again (EV_P_ struct ev_timer *w)	1665	ev_timer_again (EV_P_ ev_timer *w)
1454	{	1666	{
1455	if (ev_is_active (w))	1667	if (ev_is_active (w))
1456	{	1668	{
1457	if (w->repeat)	1669	if (w->repeat)
1458	{	1670	{
1459	((WT)w)->at = mn_now + w->repeat;	1671	((WT)w)->at = mn_now + w->repeat;
1460	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1672	adjustheap (timers, timercnt, ((W)w)->active - 1);
1461	}	1673	}
1462	else	1674	else
1463	ev_timer_stop (EV_A_ w);	1675	ev_timer_stop (EV_A_ w);
1464	}	1676	}
1465	else if (w->repeat)	1677	else if (w->repeat)
…		…
1467	w->at = w->repeat;	1679	w->at = w->repeat;
1468	ev_timer_start (EV_A_ w);	1680	ev_timer_start (EV_A_ w);
1469	}	1681	}
1470	}	1682	}
1471		1683
1472	#if EV_PERIODICS	1684	#if EV_PERIODIC_ENABLE
1473	void	1685	void noinline
1474	ev_periodic_start (EV_P_ struct ev_periodic *w)	1686	ev_periodic_start (EV_P_ ev_periodic *w)
1475	{	1687	{
1476	if (expect_false (ev_is_active (w)))	1688	if (expect_false (ev_is_active (w)))
1477	return;	1689	return;
1478		1690
1479	if (w->reschedule_cb)	1691	if (w->reschedule_cb)
1480	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1692	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1481	else if (w->interval)	1693	else if (w->interval)
1482	{	1694	{
1483	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1695	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1484	/* this formula differs from the one in periodic_reify because we do not always round up */	1696	/* this formula differs from the one in periodic_reify because we do not always round up */
1485	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1697	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1486	}	1698	}
		1699	else
		1700	((WT)w)->at = w->offset;
1487		1701
1488	ev_start (EV_A_ (W)w, ++periodiccnt);	1702	ev_start (EV_A_ (W)w, ++periodiccnt);
1489	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1703	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1490	periodics [periodiccnt - 1] = w;	1704	periodics [periodiccnt - 1] = (WT)w;
1491	upheap ((WT *)periodics, periodiccnt - 1);	1705	upheap (periodics, periodiccnt - 1);
1492		1706
1493	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1707	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1494	}	1708	}
1495		1709
1496	void	1710	void noinline
1497	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1711	ev_periodic_stop (EV_P_ ev_periodic *w)
1498	{	1712	{
1499	ev_clear_pending (EV_A_ (W)w);	1713	clear_pending (EV_A_ (W)w);
1500	if (expect_false (!ev_is_active (w)))	1714	if (expect_false (!ev_is_active (w)))
1501	return;	1715	return;
1502		1716
1503	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1717	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1504		1718
		1719	{
		1720	int active = ((W)w)->active;
		1721
1505	if (expect_true (((W)w)->active < periodiccnt--))	1722	if (expect_true (--active < --periodiccnt))
1506	{	1723	{
1507	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1724	periodics [active] = periodics [periodiccnt];
1508	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1725	adjustheap (periodics, periodiccnt, active);
1509	}	1726	}
		1727	}
1510		1728
1511	ev_stop (EV_A_ (W)w);	1729	ev_stop (EV_A_ (W)w);
1512	}	1730	}
1513		1731
1514	void	1732	void noinline
1515	ev_periodic_again (EV_P_ struct ev_periodic *w)	1733	ev_periodic_again (EV_P_ ev_periodic *w)
1516	{	1734	{
1517	/* TODO: use adjustheap and recalculation */	1735	/* TODO: use adjustheap and recalculation */
1518	ev_periodic_stop (EV_A_ w);	1736	ev_periodic_stop (EV_A_ w);
1519	ev_periodic_start (EV_A_ w);	1737	ev_periodic_start (EV_A_ w);
1520	}	1738	}
1521	#endif	1739	#endif
1522		1740
1523	void
1524	ev_idle_start (EV_P_ struct ev_idle *w)
1525	{
1526	if (expect_false (ev_is_active (w)))
1527	return;
1528
1529	ev_start (EV_A_ (W)w, ++idlecnt);
1530	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1531	idles [idlecnt - 1] = w;
1532	}
1533
1534	void
1535	ev_idle_stop (EV_P_ struct ev_idle *w)
1536	{
1537	ev_clear_pending (EV_A_ (W)w);
1538	if (expect_false (!ev_is_active (w)))
1539	return;
1540
1541	idles [((W)w)->active - 1] = idles [--idlecnt];
1542	ev_stop (EV_A_ (W)w);
1543	}
1544
1545	void
1546	ev_prepare_start (EV_P_ struct ev_prepare *w)
1547	{
1548	if (expect_false (ev_is_active (w)))
1549	return;
1550
1551	ev_start (EV_A_ (W)w, ++preparecnt);
1552	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1553	prepares [preparecnt - 1] = w;
1554	}
1555
1556	void
1557	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1558	{
1559	ev_clear_pending (EV_A_ (W)w);
1560	if (expect_false (!ev_is_active (w)))
1561	return;
1562
1563	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1564	ev_stop (EV_A_ (W)w);
1565	}
1566
1567	void
1568	ev_check_start (EV_P_ struct ev_check *w)
1569	{
1570	if (expect_false (ev_is_active (w)))
1571	return;
1572
1573	ev_start (EV_A_ (W)w, ++checkcnt);
1574	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1575	checks [checkcnt - 1] = w;
1576	}
1577
1578	void
1579	ev_check_stop (EV_P_ struct ev_check *w)
1580	{
1581	ev_clear_pending (EV_A_ (W)w);
1582	if (expect_false (!ev_is_active (w)))
1583	return;
1584
1585	checks [((W)w)->active - 1] = checks [--checkcnt];
1586	ev_stop (EV_A_ (W)w);
1587	}
1588
1589	#ifndef SA_RESTART	1741	#ifndef SA_RESTART
1590	# define SA_RESTART 0	1742	# define SA_RESTART 0
1591	#endif	1743	#endif
1592		1744
1593	void	1745	void noinline
1594	ev_signal_start (EV_P_ struct ev_signal *w)	1746	ev_signal_start (EV_P_ ev_signal *w)
1595	{	1747	{
1596	#if EV_MULTIPLICITY	1748	#if EV_MULTIPLICITY
1597	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1749	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1598	#endif	1750	#endif
1599	if (expect_false (ev_is_active (w)))	1751	if (expect_false (ev_is_active (w)))
1600	return;	1752	return;
1601		1753
1602	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1754	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1603		1755
		1756	{
		1757	#ifndef _WIN32
		1758	sigset_t full, prev;
		1759	sigfillset (&full);
		1760	sigprocmask (SIG_SETMASK, &full, &prev);
		1761	#endif
		1762
		1763	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1764
		1765	#ifndef _WIN32
		1766	sigprocmask (SIG_SETMASK, &prev, 0);
		1767	#endif
		1768	}
		1769
1604	ev_start (EV_A_ (W)w, 1);	1770	ev_start (EV_A_ (W)w, 1);
1605	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1606	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1771	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1607		1772
1608	if (!((WL)w)->next)	1773	if (!((WL)w)->next)
1609	{	1774	{
1610	#if _WIN32	1775	#if _WIN32
…		…
1617	sigaction (w->signum, &sa, 0);	1782	sigaction (w->signum, &sa, 0);
1618	#endif	1783	#endif
1619	}	1784	}
1620	}	1785	}
1621		1786
1622	void	1787	void noinline
1623	ev_signal_stop (EV_P_ struct ev_signal *w)	1788	ev_signal_stop (EV_P_ ev_signal *w)
1624	{	1789	{
1625	ev_clear_pending (EV_A_ (W)w);	1790	clear_pending (EV_A_ (W)w);
1626	if (expect_false (!ev_is_active (w)))	1791	if (expect_false (!ev_is_active (w)))
1627	return;	1792	return;
1628		1793
1629	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1794	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1630	ev_stop (EV_A_ (W)w);	1795	ev_stop (EV_A_ (W)w);
…		…
1632	if (!signals [w->signum - 1].head)	1797	if (!signals [w->signum - 1].head)
1633	signal (w->signum, SIG_DFL);	1798	signal (w->signum, SIG_DFL);
1634	}	1799	}
1635		1800
1636	void	1801	void
1637	ev_child_start (EV_P_ struct ev_child *w)	1802	ev_child_start (EV_P_ ev_child *w)
1638	{	1803	{
1639	#if EV_MULTIPLICITY	1804	#if EV_MULTIPLICITY
1640	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1805	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1641	#endif	1806	#endif
1642	if (expect_false (ev_is_active (w)))	1807	if (expect_false (ev_is_active (w)))
1643	return;	1808	return;
1644		1809
1645	ev_start (EV_A_ (W)w, 1);	1810	ev_start (EV_A_ (W)w, 1);
1646	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1811	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1647	}	1812	}
1648		1813
1649	void	1814	void
1650	ev_child_stop (EV_P_ struct ev_child *w)	1815	ev_child_stop (EV_P_ ev_child *w)
1651	{	1816	{
1652	ev_clear_pending (EV_A_ (W)w);	1817	clear_pending (EV_A_ (W)w);
1653	if (expect_false (!ev_is_active (w)))	1818	if (expect_false (!ev_is_active (w)))
1654	return;	1819	return;
1655		1820
1656	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1821	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1657	ev_stop (EV_A_ (W)w);	1822	ev_stop (EV_A_ (W)w);
1658	}	1823	}
1659		1824
		1825	#if EV_STAT_ENABLE
		1826
		1827	# ifdef _WIN32
		1828	# undef lstat
		1829	# define lstat(a,b) _stati64 (a,b)
		1830	# endif
		1831
		1832	#define DEF_STAT_INTERVAL 5.0074891
		1833	#define MIN_STAT_INTERVAL 0.1074891
		1834
		1835	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1836
		1837	#if EV_USE_INOTIFY
		1838	# define EV_INOTIFY_BUFSIZE 8192
		1839
		1840	static void noinline
		1841	infy_add (EV_P_ ev_stat *w)
		1842	{
		1843	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);
		1844
		1845	if (w->wd < 0)
		1846	{
		1847	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1848
		1849	/* monitor some parent directory for speedup hints */
		1850	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1851	{
		1852	char path [4096];
		1853	strcpy (path, w->path);
		1854
		1855	do
		1856	{
		1857	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1858	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1859
		1860	char *pend = strrchr (path, '/');
		1861
		1862	if (!pend)
		1863	break; /* whoops, no '/', complain to your admin */
		1864
		1865	*pend = 0;
		1866	w->wd = inotify_add_watch (fs_fd, path, mask);
		1867	}
		1868	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1869	}
		1870	}
		1871	else
		1872	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1873
		1874	if (w->wd >= 0)
		1875	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1876	}
		1877
		1878	static void noinline
		1879	infy_del (EV_P_ ev_stat *w)
		1880	{
		1881	int slot;
		1882	int wd = w->wd;
		1883
		1884	if (wd < 0)
		1885	return;
		1886
		1887	w->wd = -2;
		1888	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1889	wlist_del (&fs_hash [slot].head, (WL)w);
		1890
		1891	/* remove this watcher, if others are watching it, they will rearm */
		1892	inotify_rm_watch (fs_fd, wd);
		1893	}
		1894
		1895	static void noinline
		1896	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1897	{
		1898	if (slot < 0)
		1899	/* overflow, need to check for all hahs slots */
		1900	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1901	infy_wd (EV_A_ slot, wd, ev);
		1902	else
		1903	{
		1904	WL w_;
		1905
		1906	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1907	{
		1908	ev_stat *w = (ev_stat *)w_;
		1909	w_ = w_->next; /* lets us remove this watcher and all before it */
		1910
		1911	if (w->wd == wd || wd == -1)
		1912	{
		1913	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1914	{
		1915	w->wd = -1;
		1916	infy_add (EV_A_ w); /* re-add, no matter what */
		1917	}
		1918
		1919	stat_timer_cb (EV_A_ &w->timer, 0);
		1920	}
		1921	}
		1922	}
		1923	}
		1924
		1925	static void
		1926	infy_cb (EV_P_ ev_io *w, int revents)
		1927	{
		1928	char buf [EV_INOTIFY_BUFSIZE];
		1929	struct inotify_event *ev = (struct inotify_event *)buf;
		1930	int ofs;
		1931	int len = read (fs_fd, buf, sizeof (buf));
		1932
		1933	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1934	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1935	}
		1936
		1937	void inline_size
		1938	infy_init (EV_P)
		1939	{
		1940	if (fs_fd != -2)
		1941	return;
		1942
		1943	fs_fd = inotify_init ();
		1944
		1945	if (fs_fd >= 0)
		1946	{
		1947	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1948	ev_set_priority (&fs_w, EV_MAXPRI);
		1949	ev_io_start (EV_A_ &fs_w);
		1950	}
		1951	}
		1952
		1953	void inline_size
		1954	infy_fork (EV_P)
		1955	{
		1956	int slot;
		1957
		1958	if (fs_fd < 0)
		1959	return;
		1960
		1961	close (fs_fd);
		1962	fs_fd = inotify_init ();
		1963
		1964	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1965	{
		1966	WL w_ = fs_hash [slot].head;
		1967	fs_hash [slot].head = 0;
		1968
		1969	while (w_)
		1970	{
		1971	ev_stat *w = (ev_stat *)w_;
		1972	w_ = w_->next; /* lets us add this watcher */
		1973
		1974	w->wd = -1;
		1975
		1976	if (fs_fd >= 0)
		1977	infy_add (EV_A_ w); /* re-add, no matter what */
		1978	else
		1979	ev_timer_start (EV_A_ &w->timer);
		1980	}
		1981
		1982	}
		1983	}
		1984
		1985	#endif
		1986
		1987	void
		1988	ev_stat_stat (EV_P_ ev_stat *w)
		1989	{
		1990	if (lstat (w->path, &w->attr) < 0)
		1991	w->attr.st_nlink = 0;
		1992	else if (!w->attr.st_nlink)
		1993	w->attr.st_nlink = 1;
		1994	}
		1995
		1996	static void noinline
		1997	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1998	{
		1999	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2000
		2001	/* we copy this here each the time so that */
		2002	/* prev has the old value when the callback gets invoked */
		2003	w->prev = w->attr;
		2004	ev_stat_stat (EV_A_ w);
		2005
		2006	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2007	if (
		2008	w->prev.st_dev != w->attr.st_dev
		2009	|| w->prev.st_ino != w->attr.st_ino
		2010	|| w->prev.st_mode != w->attr.st_mode
		2011	|| w->prev.st_nlink != w->attr.st_nlink
		2012	|| w->prev.st_uid != w->attr.st_uid
		2013	|| w->prev.st_gid != w->attr.st_gid
		2014	|| w->prev.st_rdev != w->attr.st_rdev
		2015	|| w->prev.st_size != w->attr.st_size
		2016	|| w->prev.st_atime != w->attr.st_atime
		2017	|| w->prev.st_mtime != w->attr.st_mtime
		2018	|| w->prev.st_ctime != w->attr.st_ctime
		2019	) {
		2020	#if EV_USE_INOTIFY
		2021	infy_del (EV_A_ w);
		2022	infy_add (EV_A_ w);
		2023	ev_stat_stat (EV_A_ w); /* avoid race... */
		2024	#endif
		2025
		2026	ev_feed_event (EV_A_ w, EV_STAT);
		2027	}
		2028	}
		2029
		2030	void
		2031	ev_stat_start (EV_P_ ev_stat *w)
		2032	{
		2033	if (expect_false (ev_is_active (w)))
		2034	return;
		2035
		2036	/* since we use memcmp, we need to clear any padding data etc. */
		2037	memset (&w->prev, 0, sizeof (ev_statdata));
		2038	memset (&w->attr, 0, sizeof (ev_statdata));
		2039
		2040	ev_stat_stat (EV_A_ w);
		2041
		2042	if (w->interval < MIN_STAT_INTERVAL)
		2043	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2044
		2045	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2046	ev_set_priority (&w->timer, ev_priority (w));
		2047
		2048	#if EV_USE_INOTIFY
		2049	infy_init (EV_A);
		2050
		2051	if (fs_fd >= 0)
		2052	infy_add (EV_A_ w);
		2053	else
		2054	#endif
		2055	ev_timer_start (EV_A_ &w->timer);
		2056
		2057	ev_start (EV_A_ (W)w, 1);
		2058	}
		2059
		2060	void
		2061	ev_stat_stop (EV_P_ ev_stat *w)
		2062	{
		2063	clear_pending (EV_A_ (W)w);
		2064	if (expect_false (!ev_is_active (w)))
		2065	return;
		2066
		2067	#if EV_USE_INOTIFY
		2068	infy_del (EV_A_ w);
		2069	#endif
		2070	ev_timer_stop (EV_A_ &w->timer);
		2071
		2072	ev_stop (EV_A_ (W)w);
		2073	}
		2074	#endif
		2075
		2076	#if EV_IDLE_ENABLE
		2077	void
		2078	ev_idle_start (EV_P_ ev_idle *w)
		2079	{
		2080	if (expect_false (ev_is_active (w)))
		2081	return;
		2082
		2083	pri_adjust (EV_A_ (W)w);
		2084
		2085	{
		2086	int active = ++idlecnt [ABSPRI (w)];
		2087
		2088	++idleall;
		2089	ev_start (EV_A_ (W)w, active);
		2090
		2091	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2092	idles [ABSPRI (w)][active - 1] = w;
		2093	}
		2094	}
		2095
		2096	void
		2097	ev_idle_stop (EV_P_ ev_idle *w)
		2098	{
		2099	clear_pending (EV_A_ (W)w);
		2100	if (expect_false (!ev_is_active (w)))
		2101	return;
		2102
		2103	{
		2104	int active = ((W)w)->active;
		2105
		2106	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2107	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2108
		2109	ev_stop (EV_A_ (W)w);
		2110	--idleall;
		2111	}
		2112	}
		2113	#endif
		2114
		2115	void
		2116	ev_prepare_start (EV_P_ ev_prepare *w)
		2117	{
		2118	if (expect_false (ev_is_active (w)))
		2119	return;
		2120
		2121	ev_start (EV_A_ (W)w, ++preparecnt);
		2122	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2123	prepares [preparecnt - 1] = w;
		2124	}
		2125
		2126	void
		2127	ev_prepare_stop (EV_P_ ev_prepare *w)
		2128	{
		2129	clear_pending (EV_A_ (W)w);
		2130	if (expect_false (!ev_is_active (w)))
		2131	return;
		2132
		2133	{
		2134	int active = ((W)w)->active;
		2135	prepares [active - 1] = prepares [--preparecnt];
		2136	((W)prepares [active - 1])->active = active;
		2137	}
		2138
		2139	ev_stop (EV_A_ (W)w);
		2140	}
		2141
		2142	void
		2143	ev_check_start (EV_P_ ev_check *w)
		2144	{
		2145	if (expect_false (ev_is_active (w)))
		2146	return;
		2147
		2148	ev_start (EV_A_ (W)w, ++checkcnt);
		2149	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2150	checks [checkcnt - 1] = w;
		2151	}
		2152
		2153	void
		2154	ev_check_stop (EV_P_ ev_check *w)
		2155	{
		2156	clear_pending (EV_A_ (W)w);
		2157	if (expect_false (!ev_is_active (w)))
		2158	return;
		2159
		2160	{
		2161	int active = ((W)w)->active;
		2162	checks [active - 1] = checks [--checkcnt];
		2163	((W)checks [active - 1])->active = active;
		2164	}
		2165
		2166	ev_stop (EV_A_ (W)w);
		2167	}
		2168
		2169	#if EV_EMBED_ENABLE
		2170	void noinline
		2171	ev_embed_sweep (EV_P_ ev_embed *w)
		2172	{
		2173	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2174	}
		2175
		2176	static void
		2177	embed_cb (EV_P_ ev_io *io, int revents)
		2178	{
		2179	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2180
		2181	if (ev_cb (w))
		2182	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2183	else
		2184	ev_embed_sweep (loop, w);
		2185	}
		2186
		2187	void
		2188	ev_embed_start (EV_P_ ev_embed *w)
		2189	{
		2190	if (expect_false (ev_is_active (w)))
		2191	return;
		2192
		2193	{
		2194	struct ev_loop *loop = w->loop;
		2195	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2196	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2197	}
		2198
		2199	ev_set_priority (&w->io, ev_priority (w));
		2200	ev_io_start (EV_A_ &w->io);
		2201
		2202	ev_start (EV_A_ (W)w, 1);
		2203	}
		2204
		2205	void
		2206	ev_embed_stop (EV_P_ ev_embed *w)
		2207	{
		2208	clear_pending (EV_A_ (W)w);
		2209	if (expect_false (!ev_is_active (w)))
		2210	return;
		2211
		2212	ev_io_stop (EV_A_ &w->io);
		2213
		2214	ev_stop (EV_A_ (W)w);
		2215	}
		2216	#endif
		2217
		2218	#if EV_FORK_ENABLE
		2219	void
		2220	ev_fork_start (EV_P_ ev_fork *w)
		2221	{
		2222	if (expect_false (ev_is_active (w)))
		2223	return;
		2224
		2225	ev_start (EV_A_ (W)w, ++forkcnt);
		2226	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2227	forks [forkcnt - 1] = w;
		2228	}
		2229
		2230	void
		2231	ev_fork_stop (EV_P_ ev_fork *w)
		2232	{
		2233	clear_pending (EV_A_ (W)w);
		2234	if (expect_false (!ev_is_active (w)))
		2235	return;
		2236
		2237	{
		2238	int active = ((W)w)->active;
		2239	forks [active - 1] = forks [--forkcnt];
		2240	((W)forks [active - 1])->active = active;
		2241	}
		2242
		2243	ev_stop (EV_A_ (W)w);
		2244	}
		2245	#endif
		2246
1660	/*****************************************************************************/	2247	/*****************************************************************************/
1661		2248
1662	struct ev_once	2249	struct ev_once
1663	{	2250	{
1664	struct ev_io io;	2251	ev_io io;
1665	struct ev_timer to;	2252	ev_timer to;
1666	void (*cb)(int revents, void *arg);	2253	void (*cb)(int revents, void *arg);
1667	void *arg;	2254	void *arg;
1668	};	2255	};
1669		2256
1670	static void	2257	static void
…		…
1679		2266
1680	cb (revents, arg);	2267	cb (revents, arg);
1681	}	2268	}
1682		2269
1683	static void	2270	static void
1684	once_cb_io (EV_P_ struct ev_io *w, int revents)	2271	once_cb_io (EV_P_ ev_io *w, int revents)
1685	{	2272	{
1686	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2273	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1687	}	2274	}
1688		2275
1689	static void	2276	static void
1690	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2277	once_cb_to (EV_P_ ev_timer *w, int revents)
1691	{	2278	{
1692	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2279	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1693	}	2280	}
1694		2281
1695	void	2282	void

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