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Comparing libev/ev.c (file contents):
Revision 1.140 by root, Mon Nov 26 19:49:36 2007 UTC vs.
Revision 1.186 by root, Sat Dec 15 23:14:38 2007 UTC

…		…
94	# else	94	# else
95	# define EV_USE_PORT 0	95	# define EV_USE_PORT 0
96	# endif	96	# endif
97	# endif	97	# endif
98		98
		99	# ifndef EV_USE_INOTIFY
		100	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		101	# define EV_USE_INOTIFY 1
		102	# else
		103	# define EV_USE_INOTIFY 0
		104	# endif
		105	# endif
		106
99	#endif	107	#endif
100		108
101	#include <math.h>	109	#include <math.h>
102	#include <stdlib.h>	110	#include <stdlib.h>
103	#include <fcntl.h>	111	#include <fcntl.h>
…		…
109	#include <errno.h>	117	#include <errno.h>
110	#include <sys/types.h>	118	#include <sys/types.h>
111	#include <time.h>	119	#include <time.h>
112		120
113	#include <signal.h>	121	#include <signal.h>
		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
114		128
115	#ifndef _WIN32	129	#ifndef _WIN32
116	# include <sys/time.h>	130	# include <sys/time.h>
117	# include <sys/wait.h>	131	# include <sys/wait.h>
118	# include <unistd.h>	132	# include <unistd.h>
…		…
156		170
157	#ifndef EV_USE_PORT	171	#ifndef EV_USE_PORT
158	# define EV_USE_PORT 0	172	# define EV_USE_PORT 0
159	#endif	173	#endif
160		174
		175	#ifndef EV_USE_INOTIFY
		176	# define EV_USE_INOTIFY 0
		177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
		182	# else
		183	# define EV_PID_HASHSIZE 16
		184	# endif
		185	#endif
		186
		187	#ifndef EV_INOTIFY_HASHSIZE
		188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
		193	#endif
		194
161	/**/	195	/**/
162		196
163	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
164	# undef EV_USE_MONOTONIC	198	# undef EV_USE_MONOTONIC
165	# define EV_USE_MONOTONIC 0	199	# define EV_USE_MONOTONIC 0
…		…
168	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
169	# undef EV_USE_REALTIME	203	# undef EV_USE_REALTIME
170	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
171	#endif	205	#endif
172		206
		207	#if !EV_STAT_ENABLE
		208	# undef EV_USE_INOTIFY
		209	# define EV_USE_INOTIFY 0
		210	#endif
		211
		212	#if EV_USE_INOTIFY
		213	# include <sys/inotify.h>
		214	#endif
		215
173	#if EV_SELECT_IS_WINSOCKET	216	#if EV_SELECT_IS_WINSOCKET
174	# include <winsock.h>	217	# include <winsock.h>
175	#endif	218	#endif
176		219
177	/**/	220	/**/
178		221
		222	/*
		223	* This is used to avoid floating point rounding problems.
		224	* It is added to ev_rt_now when scheduling periodics
		225	* to ensure progress, time-wise, even when rounding
		226	* errors are against us.
		227	* This value is good at least till the year 4000.
		228	* Better solutions welcome.
		229	*/
		230	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
		231
179	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	232	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
180	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	233	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
181	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
182	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */	234	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
183		235
184	#ifdef EV_H
185	# include EV_H
186	#else
187	# include "ev.h"
188	#endif
189
190	#if __GNUC__ >= 3	236	#if __GNUC__ >= 4
191	# define expect(expr,value) __builtin_expect ((expr),(value))	237	# define expect(expr,value) __builtin_expect ((expr),(value))
192	# define inline_size static inline /* inline for codesize */
193	# if EV_MINIMAL
194	# define noinline __attribute__ ((noinline))	238	# define noinline __attribute__ ((noinline))
195	# define inline_speed static noinline
196	# else
197	# define noinline
198	# define inline_speed static inline
199	# endif
200	#else	239	#else
201	# define expect(expr,value) (expr)	240	# define expect(expr,value) (expr)
202	# define inline_speed static
203	# define inline_minimal static
204	# define noinline	241	# define noinline
		242	# if __STDC_VERSION__ < 199901L
		243	# define inline
		244	# endif
205	#endif	245	#endif
206		246
207	#define expect_false(expr) expect ((expr) != 0, 0)	247	#define expect_false(expr) expect ((expr) != 0, 0)
208	#define expect_true(expr) expect ((expr) != 0, 1)	248	#define expect_true(expr) expect ((expr) != 0, 1)
		249	#define inline_size static inline
		250
		251	#if EV_MINIMAL
		252	# define inline_speed static noinline
		253	#else
		254	# define inline_speed static inline
		255	#endif
209		256
210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	257	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	258	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
212		259
213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	260	#define EMPTY /* required for microsofts broken pseudo-c compiler */
214	#define EMPTY2(a,b) /* used to suppress some warnings */	261	#define EMPTY2(a,b) /* used to suppress some warnings */
215		262
216	typedef ev_watcher *W;	263	typedef ev_watcher *W;
217	typedef ev_watcher_list *WL;	264	typedef ev_watcher_list *WL;
218	typedef ev_watcher_time *WT;	265	typedef ev_watcher_time *WT;
…		…
225		272
226	/*****************************************************************************/	273	/*****************************************************************************/
227		274
228	static void (*syserr_cb)(const char *msg);	275	static void (*syserr_cb)(const char *msg);
229		276
		277	void
230	void ev_set_syserr_cb (void (*cb)(const char *msg))	278	ev_set_syserr_cb (void (*cb)(const char *msg))
231	{	279	{
232	syserr_cb = cb;	280	syserr_cb = cb;
233	}	281	}
234		282
235	static void	283	static void noinline
236	syserr (const char *msg)	284	syserr (const char *msg)
237	{	285	{
238	if (!msg)	286	if (!msg)
239	msg = "(libev) system error";	287	msg = "(libev) system error";
240		288
…		…
247	}	295	}
248	}	296	}
249		297
250	static void *(*alloc)(void *ptr, long size);	298	static void *(*alloc)(void *ptr, long size);
251		299
		300	void
252	void ev_set_allocator (void *(*cb)(void *ptr, long size))	301	ev_set_allocator (void *(*cb)(void *ptr, long size))
253	{	302	{
254	alloc = cb;	303	alloc = cb;
255	}	304	}
256		305
257	static void *	306	inline_speed void *
258	ev_realloc (void *ptr, long size)	307	ev_realloc (void *ptr, long size)
259	{	308	{
260	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	309	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
261		310
262	if (!ptr && size)	311	if (!ptr && size)
…		…
286	typedef struct	335	typedef struct
287	{	336	{
288	W w;	337	W w;
289	int events;	338	int events;
290	} ANPENDING;	339	} ANPENDING;
		340
		341	#if EV_USE_INOTIFY
		342	typedef struct
		343	{
		344	WL head;
		345	} ANFS;
		346	#endif
291		347
292	#if EV_MULTIPLICITY	348	#if EV_MULTIPLICITY
293		349
294	struct ev_loop	350	struct ev_loop
295	{	351	{
…		…
315		371
316	#endif	372	#endif
317		373
318	/*****************************************************************************/	374	/*****************************************************************************/
319		375
320	ev_tstamp noinline	376	ev_tstamp
321	ev_time (void)	377	ev_time (void)
322	{	378	{
323	#if EV_USE_REALTIME	379	#if EV_USE_REALTIME
324	struct timespec ts;	380	struct timespec ts;
325	clock_gettime (CLOCK_REALTIME, &ts);	381	clock_gettime (CLOCK_REALTIME, &ts);
…		…
352	{	408	{
353	return ev_rt_now;	409	return ev_rt_now;
354	}	410	}
355	#endif	411	#endif
356		412
357	#define array_roundsize(type,n) (((n) | 4) & ~3)	413	int inline_size
		414	array_nextsize (int elem, int cur, int cnt)
		415	{
		416	int ncur = cur + 1;
		417
		418	do
		419	ncur <<= 1;
		420	while (cnt > ncur);
		421
		422	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		423	if (elem * ncur > 4096)
		424	{
		425	ncur *= elem;
		426	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		427	ncur = ncur - sizeof (void *) * 4;
		428	ncur /= elem;
		429	}
		430
		431	return ncur;
		432	}
		433
		434	static noinline void *
		435	array_realloc (int elem, void *base, int *cur, int cnt)
		436	{
		437	*cur = array_nextsize (elem, *cur, cnt);
		438	return ev_realloc (base, elem * *cur);
		439	}
358		440
359	#define array_needsize(type,base,cur,cnt,init) \	441	#define array_needsize(type,base,cur,cnt,init) \
360	if (expect_false ((cnt) > cur)) \	442	if (expect_false ((cnt) > (cur))) \
361	{ \	443	{ \
362	int newcnt = cur; \	444	int ocur_ = (cur); \
363	do \	445	(base) = (type *)array_realloc \
364	{ \	446	(sizeof (type), (base), &(cur), (cnt)); \
365	newcnt = array_roundsize (type, newcnt << 1); \	447	init ((base) + (ocur_), (cur) - ocur_); \
366	} \
367	while ((cnt) > newcnt); \
368	\
369	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
370	init (base + cur, newcnt - cur); \
371	cur = newcnt; \
372	}	448	}
373		449
		450	#if 0
374	#define array_slim(type,stem) \	451	#define array_slim(type,stem) \
375	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	452	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
376	{ \	453	{ \
377	stem ## max = array_roundsize (stem ## cnt >> 1); \	454	stem ## max = array_roundsize (stem ## cnt >> 1); \
378	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	455	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
379	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	456	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
380	}	457	}
		458	#endif
381		459
382	#define array_free(stem, idx) \	460	#define array_free(stem, idx) \
383	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	461	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
		462
		463	/*****************************************************************************/
		464
		465	void noinline
		466	ev_feed_event (EV_P_ void *w, int revents)
		467	{
		468	W w_ = (W)w;
		469	int pri = ABSPRI (w_);
		470
		471	if (expect_false (w_->pending))
		472	pendings [pri][w_->pending - 1].events |= revents;
		473	else
		474	{
		475	w_->pending = ++pendingcnt [pri];
		476	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		477	pendings [pri][w_->pending - 1].w = w_;
		478	pendings [pri][w_->pending - 1].events = revents;
		479	}
		480	}
		481
		482	void inline_speed
		483	queue_events (EV_P_ W *events, int eventcnt, int type)
		484	{
		485	int i;
		486
		487	for (i = 0; i < eventcnt; ++i)
		488	ev_feed_event (EV_A_ events [i], type);
		489	}
384		490
385	/*****************************************************************************/	491	/*****************************************************************************/
386		492
387	void inline_size	493	void inline_size
388	anfds_init (ANFD *base, int count)	494	anfds_init (ANFD *base, int count)
…		…
395		501
396	++base;	502	++base;
397	}	503	}
398	}	504	}
399		505
400	void noinline
401	ev_feed_event (EV_P_ void *w, int revents)
402	{
403	W w_ = (W)w;
404
405	if (expect_false (w_->pending))
406	{
407	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
408	return;
409	}
410
411	w_->pending = ++pendingcnt [ABSPRI (w_)];
412	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
413	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
414	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
415	}
416
417	static void
418	queue_events (EV_P_ W *events, int eventcnt, int type)
419	{
420	int i;
421
422	for (i = 0; i < eventcnt; ++i)
423	ev_feed_event (EV_A_ events [i], type);
424	}
425
426	void inline_speed	506	void inline_speed
427	fd_event (EV_P_ int fd, int revents)	507	fd_event (EV_P_ int fd, int revents)
428	{	508	{
429	ANFD *anfd = anfds + fd;	509	ANFD *anfd = anfds + fd;
430	ev_io *w;	510	ev_io *w;
…		…
439	}	519	}
440		520
441	void	521	void
442	ev_feed_fd_event (EV_P_ int fd, int revents)	522	ev_feed_fd_event (EV_P_ int fd, int revents)
443	{	523	{
		524	if (fd >= 0 && fd < anfdmax)
444	fd_event (EV_A_ fd, revents);	525	fd_event (EV_A_ fd, revents);
445	}	526	}
446
447	/*****************************************************************************/
448		527
449	void inline_size	528	void inline_size
450	fd_reify (EV_P)	529	fd_reify (EV_P)
451	{	530	{
452	int i;	531	int i;
…		…
455	{	534	{
456	int fd = fdchanges [i];	535	int fd = fdchanges [i];
457	ANFD *anfd = anfds + fd;	536	ANFD *anfd = anfds + fd;
458	ev_io *w;	537	ev_io *w;
459		538
460	int events = 0;	539	unsigned char events = 0;
461		540
462	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	541	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
463	events |= w->events;	542	events |= (unsigned char)w->events;
464		543
465	#if EV_SELECT_IS_WINSOCKET	544	#if EV_SELECT_IS_WINSOCKET
466	if (events)	545	if (events)
467	{	546	{
468	unsigned long argp;	547	unsigned long argp;
469	anfd->handle = _get_osfhandle (fd);	548	anfd->handle = _get_osfhandle (fd);
470	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	549	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
471	}	550	}
472	#endif	551	#endif
473		552
		553	{
		554	unsigned char o_events = anfd->events;
		555	unsigned char o_reify = anfd->reify;
		556
474	anfd->reify = 0;	557	anfd->reify = 0;
475
476	backend_modify (EV_A_ fd, anfd->events, events);
477	anfd->events = events;	558	anfd->events = events;
		559
		560	if (o_events != events || o_reify & EV_IOFDSET)
		561	backend_modify (EV_A_ fd, o_events, events);
		562	}
478	}	563	}
479		564
480	fdchangecnt = 0;	565	fdchangecnt = 0;
481	}	566	}
482		567
483	void inline_size	568	void inline_size
484	fd_change (EV_P_ int fd)	569	fd_change (EV_P_ int fd, int flags)
485	{	570	{
486	if (expect_false (anfds [fd].reify))	571	unsigned char reify = anfds [fd].reify;
487	return;
488
489	anfds [fd].reify = 1;	572	anfds [fd].reify |= flags;
490		573
		574	if (expect_true (!reify))
		575	{
491	++fdchangecnt;	576	++fdchangecnt;
492	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	577	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
493	fdchanges [fdchangecnt - 1] = fd;	578	fdchanges [fdchangecnt - 1] = fd;
		579	}
494	}	580	}
495		581
496	void inline_speed	582	void inline_speed
497	fd_kill (EV_P_ int fd)	583	fd_kill (EV_P_ int fd)
498	{	584	{
…		…
545	static void noinline	631	static void noinline
546	fd_rearm_all (EV_P)	632	fd_rearm_all (EV_P)
547	{	633	{
548	int fd;	634	int fd;
549		635
550	/* this should be highly optimised to not do anything but set a flag */
551	for (fd = 0; fd < anfdmax; ++fd)	636	for (fd = 0; fd < anfdmax; ++fd)
552	if (anfds [fd].events)	637	if (anfds [fd].events)
553	{	638	{
554	anfds [fd].events = 0;	639	anfds [fd].events = 0;
555	fd_change (EV_A_ fd);	640	fd_change (EV_A_ fd, EV_IOFDSET | 1);
556	}	641	}
557	}	642	}
558		643
559	/*****************************************************************************/	644	/*****************************************************************************/
560		645
561	void inline_speed	646	void inline_speed
562	upheap (WT *heap, int k)	647	upheap (WT *heap, int k)
563	{	648	{
564	WT w = heap [k];	649	WT w = heap [k];
565		650
566	while (k && heap [k >> 1]->at > w->at)	651	while (k)
567	{	652	{
		653	int p = (k - 1) >> 1;
		654
		655	if (heap [p]->at <= w->at)
		656	break;
		657
568	heap [k] = heap [k >> 1];	658	heap [k] = heap [p];
569	((W)heap [k])->active = k + 1;	659	((W)heap [k])->active = k + 1;
570	k >>= 1;	660	k = p;
571	}	661	}
572		662
573	heap [k] = w;	663	heap [k] = w;
574	((W)heap [k])->active = k + 1;	664	((W)heap [k])->active = k + 1;
575
576	}	665	}
577		666
578	void inline_speed	667	void inline_speed
579	downheap (WT *heap, int N, int k)	668	downheap (WT *heap, int N, int k)
580	{	669	{
581	WT w = heap [k];	670	WT w = heap [k];
582		671
583	while (k < (N >> 1))	672	for (;;)
584	{	673	{
585	int j = k << 1;	674	int c = (k << 1) + 1;
586		675
587	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	676	if (c >= N)
588	++j;
589
590	if (w->at <= heap [j]->at)
591	break;	677	break;
592		678
		679	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		680	? 1 : 0;
		681
		682	if (w->at <= heap [c]->at)
		683	break;
		684
593	heap [k] = heap [j];	685	heap [k] = heap [c];
594	((W)heap [k])->active = k + 1;	686	((W)heap [k])->active = k + 1;
		687
595	k = j;	688	k = c;
596	}	689	}
597		690
598	heap [k] = w;	691	heap [k] = w;
599	((W)heap [k])->active = k + 1;	692	((W)heap [k])->active = k + 1;
600	}	693	}
…		…
682	for (signum = signalmax; signum--; )	775	for (signum = signalmax; signum--; )
683	if (signals [signum].gotsig)	776	if (signals [signum].gotsig)
684	ev_feed_signal_event (EV_A_ signum + 1);	777	ev_feed_signal_event (EV_A_ signum + 1);
685	}	778	}
686		779
687	void inline_size	780	void inline_speed
688	fd_intern (int fd)	781	fd_intern (int fd)
689	{	782	{
690	#ifdef _WIN32	783	#ifdef _WIN32
691	int arg = 1;	784	int arg = 1;
692	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	785	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
707	ev_unref (EV_A); /* child watcher should not keep loop alive */	800	ev_unref (EV_A); /* child watcher should not keep loop alive */
708	}	801	}
709		802
710	/*****************************************************************************/	803	/*****************************************************************************/
711		804
712	static ev_child *childs [PID_HASHSIZE];	805	static WL childs [EV_PID_HASHSIZE];
713		806
714	#ifndef _WIN32	807	#ifndef _WIN32
715		808
716	static ev_signal childev;	809	static ev_signal childev;
		810
		811	void inline_speed
		812	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		813	{
		814	ev_child *w;
		815
		816	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		817	if (w->pid == pid || !w->pid)
		818	{
		819	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		820	w->rpid = pid;
		821	w->rstatus = status;
		822	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		823	}
		824	}
717		825
718	#ifndef WCONTINUED	826	#ifndef WCONTINUED
719	# define WCONTINUED 0	827	# define WCONTINUED 0
720	#endif	828	#endif
721		829
722	void inline_speed
723	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
724	{
725	ev_child *w;
726
727	for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
728	if (w->pid == pid || !w->pid)
729	{
730	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
731	w->rpid = pid;
732	w->rstatus = status;
733	ev_feed_event (EV_A_ (W)w, EV_CHILD);
734	}
735	}
736
737	static void	830	static void
738	childcb (EV_P_ ev_signal *sw, int revents)	831	childcb (EV_P_ ev_signal *sw, int revents)
739	{	832	{
740	int pid, status;	833	int pid, status;
741		834
		835	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
742	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	836	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
743	{	837	if (!WCONTINUED
		838	|| errno != EINVAL
		839	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		840	return;
		841
744	/* make sure we are called again until all childs have been reaped */	842	/* make sure we are called again until all childs have been reaped */
745	/* we need to do it this way so that the callback gets called before we continue */	843	/* we need to do it this way so that the callback gets called before we continue */
746	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	844	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
747		845
748	child_reap (EV_A_ sw, pid, pid, status);	846	child_reap (EV_A_ sw, pid, pid, status);
		847	if (EV_PID_HASHSIZE > 1)
749	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	848	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
750	}
751	}	849	}
752		850
753	#endif	851	#endif
754		852
755	/*****************************************************************************/	853	/*****************************************************************************/
…		…
838	ev_backend (EV_P)	936	ev_backend (EV_P)
839	{	937	{
840	return backend;	938	return backend;
841	}	939	}
842		940
843	static void	941	unsigned int
		942	ev_loop_count (EV_P)
		943	{
		944	return loop_count;
		945	}
		946
		947	static void noinline
844	loop_init (EV_P_ unsigned int flags)	948	loop_init (EV_P_ unsigned int flags)
845	{	949	{
846	if (!backend)	950	if (!backend)
847	{	951	{
848	#if EV_USE_MONOTONIC	952	#if EV_USE_MONOTONIC
…		…
856	ev_rt_now = ev_time ();	960	ev_rt_now = ev_time ();
857	mn_now = get_clock ();	961	mn_now = get_clock ();
858	now_floor = mn_now;	962	now_floor = mn_now;
859	rtmn_diff = ev_rt_now - mn_now;	963	rtmn_diff = ev_rt_now - mn_now;
860		964
		965	/* pid check not overridable via env */
		966	#ifndef _WIN32
		967	if (flags & EVFLAG_FORKCHECK)
		968	curpid = getpid ();
		969	#endif
		970
861	if (!(flags & EVFLAG_NOENV)	971	if (!(flags & EVFLAG_NOENV)
862	&& !enable_secure ()	972	&& !enable_secure ()
863	&& getenv ("LIBEV_FLAGS"))	973	&& getenv ("LIBEV_FLAGS"))
864	flags = atoi (getenv ("LIBEV_FLAGS"));	974	flags = atoi (getenv ("LIBEV_FLAGS"));
865		975
866	if (!(flags & 0x0000ffffUL))	976	if (!(flags & 0x0000ffffUL))
867	flags |= ev_recommended_backends ();	977	flags |= ev_recommended_backends ();
868		978
869	backend = 0;	979	backend = 0;
		980	backend_fd = -1;
		981	#if EV_USE_INOTIFY
		982	fs_fd = -2;
		983	#endif
		984
870	#if EV_USE_PORT	985	#if EV_USE_PORT
871	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	986	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
872	#endif	987	#endif
873	#if EV_USE_KQUEUE	988	#if EV_USE_KQUEUE
874	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	989	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
886	ev_init (&sigev, sigcb);	1001	ev_init (&sigev, sigcb);
887	ev_set_priority (&sigev, EV_MAXPRI);	1002	ev_set_priority (&sigev, EV_MAXPRI);
888	}	1003	}
889	}	1004	}
890		1005
891	static void	1006	static void noinline
892	loop_destroy (EV_P)	1007	loop_destroy (EV_P)
893	{	1008	{
894	int i;	1009	int i;
		1010
		1011	#if EV_USE_INOTIFY
		1012	if (fs_fd >= 0)
		1013	close (fs_fd);
		1014	#endif
		1015
		1016	if (backend_fd >= 0)
		1017	close (backend_fd);
895		1018
896	#if EV_USE_PORT	1019	#if EV_USE_PORT
897	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1020	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
898	#endif	1021	#endif
899	#if EV_USE_KQUEUE	1022	#if EV_USE_KQUEUE
…		…
908	#if EV_USE_SELECT	1031	#if EV_USE_SELECT
909	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1032	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
910	#endif	1033	#endif
911		1034
912	for (i = NUMPRI; i--; )	1035	for (i = NUMPRI; i--; )
		1036	{
913	array_free (pending, [i]);	1037	array_free (pending, [i]);
		1038	#if EV_IDLE_ENABLE
		1039	array_free (idle, [i]);
		1040	#endif
		1041	}
		1042
		1043	ev_free (anfds); anfdmax = 0;
914		1044
915	/* have to use the microsoft-never-gets-it-right macro */	1045	/* have to use the microsoft-never-gets-it-right macro */
916	array_free (fdchange, EMPTY0);	1046	array_free (fdchange, EMPTY);
917	array_free (timer, EMPTY0);	1047	array_free (timer, EMPTY);
918	#if EV_PERIODIC_ENABLE	1048	#if EV_PERIODIC_ENABLE
919	array_free (periodic, EMPTY0);	1049	array_free (periodic, EMPTY);
920	#endif	1050	#endif
921	array_free (idle, EMPTY0);
922	array_free (prepare, EMPTY0);	1051	array_free (prepare, EMPTY);
923	array_free (check, EMPTY0);	1052	array_free (check, EMPTY);
		1053	array_free (fork, EMPTY);
924		1054
925	backend = 0;	1055	backend = 0;
926	}	1056	}
927		1057
928	static void	1058	void inline_size infy_fork (EV_P);
		1059
		1060	void inline_size
929	loop_fork (EV_P)	1061	loop_fork (EV_P)
930	{	1062	{
931	#if EV_USE_PORT	1063	#if EV_USE_PORT
932	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1064	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
933	#endif	1065	#endif
934	#if EV_USE_KQUEUE	1066	#if EV_USE_KQUEUE
935	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1067	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
936	#endif	1068	#endif
937	#if EV_USE_EPOLL	1069	#if EV_USE_EPOLL
938	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1070	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1071	#endif
		1072	#if EV_USE_INOTIFY
		1073	infy_fork (EV_A);
939	#endif	1074	#endif
940		1075
941	if (ev_is_active (&sigev))	1076	if (ev_is_active (&sigev))
942	{	1077	{
943	/* default loop */	1078	/* default loop */
…		…
1059	postfork = 1;	1194	postfork = 1;
1060	}	1195	}
1061		1196
1062	/*****************************************************************************/	1197	/*****************************************************************************/
1063		1198
1064	int inline_size	1199	void
1065	any_pending (EV_P)	1200	ev_invoke (EV_P_ void *w, int revents)
1066	{	1201	{
1067	int pri;	1202	EV_CB_INVOKE ((W)w, revents);
1068
1069	for (pri = NUMPRI; pri--; )
1070	if (pendingcnt [pri])
1071	return 1;
1072
1073	return 0;
1074	}	1203	}
1075		1204
1076	void inline_speed	1205	void inline_speed
1077	call_pending (EV_P)	1206	call_pending (EV_P)
1078	{	1207	{
…		…
1083	{	1212	{
1084	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1213	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1085		1214
1086	if (expect_true (p->w))	1215	if (expect_true (p->w))
1087	{	1216	{
1088	assert (("non-pending watcher on pending list", p->w->pending));	1217	/*assert (("non-pending watcher on pending list", p->w->pending));*/
1089		1218
1090	p->w->pending = 0;	1219	p->w->pending = 0;
1091	EV_CB_INVOKE (p->w, p->events);	1220	EV_CB_INVOKE (p->w, p->events);
1092	}	1221	}
1093	}	1222	}
…		…
1096	void inline_size	1225	void inline_size
1097	timers_reify (EV_P)	1226	timers_reify (EV_P)
1098	{	1227	{
1099	while (timercnt && ((WT)timers [0])->at <= mn_now)	1228	while (timercnt && ((WT)timers [0])->at <= mn_now)
1100	{	1229	{
1101	ev_timer *w = timers [0];	1230	ev_timer *w = (ev_timer *)timers [0];
1102		1231
1103	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1232	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1104		1233
1105	/* first reschedule or stop timer */	1234	/* first reschedule or stop timer */
1106	if (w->repeat)	1235	if (w->repeat)
1107	{	1236	{
1108	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1237	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1109		1238
1110	((WT)w)->at += w->repeat;	1239	((WT)w)->at += w->repeat;
1111	if (((WT)w)->at < mn_now)	1240	if (((WT)w)->at < mn_now)
1112	((WT)w)->at = mn_now;	1241	((WT)w)->at = mn_now;
1113		1242
1114	downheap ((WT *)timers, timercnt, 0);	1243	downheap (timers, timercnt, 0);
1115	}	1244	}
1116	else	1245	else
1117	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1246	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1118		1247
1119	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1248	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1124	void inline_size	1253	void inline_size
1125	periodics_reify (EV_P)	1254	periodics_reify (EV_P)
1126	{	1255	{
1127	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1256	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1128	{	1257	{
1129	ev_periodic *w = periodics [0];	1258	ev_periodic *w = (ev_periodic *)periodics [0];
1130		1259
1131	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1260	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1132		1261
1133	/* first reschedule or stop timer */	1262	/* first reschedule or stop timer */
1134	if (w->reschedule_cb)	1263	if (w->reschedule_cb)
1135	{	1264	{
1136	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1265	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1137	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1266	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1138	downheap ((WT *)periodics, periodiccnt, 0);	1267	downheap (periodics, periodiccnt, 0);
1139	}	1268	}
1140	else if (w->interval)	1269	else if (w->interval)
1141	{	1270	{
1142	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1271	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1272	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1143	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1273	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1144	downheap ((WT *)periodics, periodiccnt, 0);	1274	downheap (periodics, periodiccnt, 0);
1145	}	1275	}
1146	else	1276	else
1147	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1277	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1148		1278
1149	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1279	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1156	int i;	1286	int i;
1157		1287
1158	/* adjust periodics after time jump */	1288	/* adjust periodics after time jump */
1159	for (i = 0; i < periodiccnt; ++i)	1289	for (i = 0; i < periodiccnt; ++i)
1160	{	1290	{
1161	ev_periodic *w = periodics [i];	1291	ev_periodic *w = (ev_periodic *)periodics [i];
1162		1292
1163	if (w->reschedule_cb)	1293	if (w->reschedule_cb)
1164	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1294	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1165	else if (w->interval)	1295	else if (w->interval)
1166	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1296	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1167	}	1297	}
1168		1298
1169	/* now rebuild the heap */	1299	/* now rebuild the heap */
1170	for (i = periodiccnt >> 1; i--; )	1300	for (i = periodiccnt >> 1; i--; )
1171	downheap ((WT *)periodics, periodiccnt, i);	1301	downheap (periodics, periodiccnt, i);
1172	}	1302	}
1173	#endif	1303	#endif
1174		1304
		1305	#if EV_IDLE_ENABLE
1175	int inline_size	1306	void inline_size
1176	time_update_monotonic (EV_P)	1307	idle_reify (EV_P)
1177	{	1308	{
		1309	if (expect_false (idleall))
		1310	{
		1311	int pri;
		1312
		1313	for (pri = NUMPRI; pri--; )
		1314	{
		1315	if (pendingcnt [pri])
		1316	break;
		1317
		1318	if (idlecnt [pri])
		1319	{
		1320	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1321	break;
		1322	}
		1323	}
		1324	}
		1325	}
		1326	#endif
		1327
		1328	void inline_speed
		1329	time_update (EV_P_ ev_tstamp max_block)
		1330	{
		1331	int i;
		1332
		1333	#if EV_USE_MONOTONIC
		1334	if (expect_true (have_monotonic))
		1335	{
		1336	ev_tstamp odiff = rtmn_diff;
		1337
1178	mn_now = get_clock ();	1338	mn_now = get_clock ();
1179		1339
		1340	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1341	/* interpolate in the meantime */
1180	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1342	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1181	{	1343	{
1182	ev_rt_now = rtmn_diff + mn_now;	1344	ev_rt_now = rtmn_diff + mn_now;
1183	return 0;	1345	return;
1184	}	1346	}
1185	else	1347
1186	{
1187	now_floor = mn_now;	1348	now_floor = mn_now;
1188	ev_rt_now = ev_time ();	1349	ev_rt_now = ev_time ();
1189	return 1;
1190	}
1191	}
1192		1350
1193	void inline_size	1351	/* loop a few times, before making important decisions.
1194	time_update (EV_P)	1352	* on the choice of "4": one iteration isn't enough,
1195	{	1353	* in case we get preempted during the calls to
1196	int i;	1354	* ev_time and get_clock. a second call is almost guaranteed
1197		1355	* to succeed in that case, though. and looping a few more times
1198	#if EV_USE_MONOTONIC	1356	* doesn't hurt either as we only do this on time-jumps or
1199	if (expect_true (have_monotonic))	1357	* in the unlikely event of having been preempted here.
1200	{	1358	*/
1201	if (time_update_monotonic (EV_A))	1359	for (i = 4; --i; )
1202	{	1360	{
1203	ev_tstamp odiff = rtmn_diff;
1204
1205	/* loop a few times, before making important decisions.
1206	* on the choice of "4": one iteration isn't enough,
1207	* in case we get preempted during the calls to
1208	* ev_time and get_clock. a second call is almost guarenteed
1209	* to succeed in that case, though. and looping a few more times
1210	* doesn't hurt either as we only do this on time-jumps or
1211	* in the unlikely event of getting preempted here.
1212	*/
1213	for (i = 4; --i; )
1214	{
1215	rtmn_diff = ev_rt_now - mn_now;	1361	rtmn_diff = ev_rt_now - mn_now;
1216		1362
1217	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1363	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1218	return; /* all is well */	1364	return; /* all is well */
1219		1365
1220	ev_rt_now = ev_time ();	1366	ev_rt_now = ev_time ();
1221	mn_now = get_clock ();	1367	mn_now = get_clock ();
1222	now_floor = mn_now;	1368	now_floor = mn_now;
1223	}	1369	}
1224		1370
1225	# if EV_PERIODIC_ENABLE	1371	# if EV_PERIODIC_ENABLE
1226	periodics_reschedule (EV_A);	1372	periodics_reschedule (EV_A);
1227	# endif	1373	# endif
1228	/* no timer adjustment, as the monotonic clock doesn't jump */	1374	/* no timer adjustment, as the monotonic clock doesn't jump */
1229	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1375	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1230	}
1231	}	1376	}
1232	else	1377	else
1233	#endif	1378	#endif
1234	{	1379	{
1235	ev_rt_now = ev_time ();	1380	ev_rt_now = ev_time ();
1236		1381
1237	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1382	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1238	{	1383	{
1239	#if EV_PERIODIC_ENABLE	1384	#if EV_PERIODIC_ENABLE
1240	periodics_reschedule (EV_A);	1385	periodics_reschedule (EV_A);
1241	#endif	1386	#endif
1242
1243	/* adjust timers. this is easy, as the offset is the same for all */	1387	/* adjust timers. this is easy, as the offset is the same for all of them */
1244	for (i = 0; i < timercnt; ++i)	1388	for (i = 0; i < timercnt; ++i)
1245	((WT)timers [i])->at += ev_rt_now - mn_now;	1389	((WT)timers [i])->at += ev_rt_now - mn_now;
1246	}	1390	}
1247		1391
1248	mn_now = ev_rt_now;	1392	mn_now = ev_rt_now;
…		…
1268	{	1412	{
1269	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1413	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1270	? EVUNLOOP_ONE	1414	? EVUNLOOP_ONE
1271	: EVUNLOOP_CANCEL;	1415	: EVUNLOOP_CANCEL;
1272		1416
1273	while (activecnt)	1417	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1418
		1419	do
1274	{	1420	{
		1421	#ifndef _WIN32
		1422	if (expect_false (curpid)) /* penalise the forking check even more */
		1423	if (expect_false (getpid () != curpid))
		1424	{
		1425	curpid = getpid ();
		1426	postfork = 1;
		1427	}
		1428	#endif
		1429
		1430	#if EV_FORK_ENABLE
		1431	/* we might have forked, so queue fork handlers */
		1432	if (expect_false (postfork))
		1433	if (forkcnt)
		1434	{
		1435	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1436	call_pending (EV_A);
		1437	}
		1438	#endif
		1439
1275	/* queue check watchers (and execute them) */	1440	/* queue prepare watchers (and execute them) */
1276	if (expect_false (preparecnt))	1441	if (expect_false (preparecnt))
1277	{	1442	{
1278	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1443	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1279	call_pending (EV_A);	1444	call_pending (EV_A);
1280	}	1445	}
1281		1446
		1447	if (expect_false (!activecnt))
		1448	break;
		1449
1282	/* we might have forked, so reify kernel state if necessary */	1450	/* we might have forked, so reify kernel state if necessary */
1283	if (expect_false (postfork))	1451	if (expect_false (postfork))
1284	loop_fork (EV_A);	1452	loop_fork (EV_A);
1285		1453
1286	/* update fd-related kernel structures */	1454	/* update fd-related kernel structures */
1287	fd_reify (EV_A);	1455	fd_reify (EV_A);
1288		1456
1289	/* calculate blocking time */	1457	/* calculate blocking time */
1290	{	1458	{
1291	double block;	1459	ev_tstamp block;
1292		1460
1293	if (flags & EVLOOP_NONBLOCK || idlecnt)	1461	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1294	block = 0.; /* do not block at all */	1462	block = 0.; /* do not block at all */
1295	else	1463	else
1296	{	1464	{
1297	/* update time to cancel out callback processing overhead */	1465	/* update time to cancel out callback processing overhead */
1298	#if EV_USE_MONOTONIC
1299	if (expect_true (have_monotonic))
1300	time_update_monotonic (EV_A);	1466	time_update (EV_A_ 1e100);
1301	else
1302	#endif
1303	{
1304	ev_rt_now = ev_time ();
1305	mn_now = ev_rt_now;
1306	}
1307		1467
1308	block = MAX_BLOCKTIME;	1468	block = MAX_BLOCKTIME;
1309		1469
1310	if (timercnt)	1470	if (timercnt)
1311	{	1471	{
…		…
1322	#endif	1482	#endif
1323		1483
1324	if (expect_false (block < 0.)) block = 0.;	1484	if (expect_false (block < 0.)) block = 0.;
1325	}	1485	}
1326		1486
		1487	++loop_count;
1327	backend_poll (EV_A_ block);	1488	backend_poll (EV_A_ block);
		1489
		1490	/* update ev_rt_now, do magic */
		1491	time_update (EV_A_ block);
1328	}	1492	}
1329
1330	/* update ev_rt_now, do magic */
1331	time_update (EV_A);
1332		1493
1333	/* queue pending timers and reschedule them */	1494	/* queue pending timers and reschedule them */
1334	timers_reify (EV_A); /* relative timers called last */	1495	timers_reify (EV_A); /* relative timers called last */
1335	#if EV_PERIODIC_ENABLE	1496	#if EV_PERIODIC_ENABLE
1336	periodics_reify (EV_A); /* absolute timers called first */	1497	periodics_reify (EV_A); /* absolute timers called first */
1337	#endif	1498	#endif
1338		1499
		1500	#if EV_IDLE_ENABLE
1339	/* queue idle watchers unless other events are pending */	1501	/* queue idle watchers unless other events are pending */
1340	if (idlecnt && !any_pending (EV_A))	1502	idle_reify (EV_A);
1341	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1503	#endif
1342		1504
1343	/* queue check watchers, to be executed first */	1505	/* queue check watchers, to be executed first */
1344	if (expect_false (checkcnt))	1506	if (expect_false (checkcnt))
1345	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1507	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1346		1508
1347	call_pending (EV_A);	1509	call_pending (EV_A);
1348		1510
1349	if (expect_false (loop_done))
1350	break;
1351	}	1511	}
		1512	while (expect_true (activecnt && !loop_done));
1352		1513
1353	if (loop_done == EVUNLOOP_ONE)	1514	if (loop_done == EVUNLOOP_ONE)
1354	loop_done = EVUNLOOP_CANCEL;	1515	loop_done = EVUNLOOP_CANCEL;
1355	}	1516	}
1356		1517
…		…
1383	head = &(*head)->next;	1544	head = &(*head)->next;
1384	}	1545	}
1385	}	1546	}
1386		1547
1387	void inline_speed	1548	void inline_speed
1388	ev_clear_pending (EV_P_ W w)	1549	clear_pending (EV_P_ W w)
1389	{	1550	{
1390	if (w->pending)	1551	if (w->pending)
1391	{	1552	{
1392	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1553	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1393	w->pending = 0;	1554	w->pending = 0;
1394	}	1555	}
1395	}	1556	}
1396		1557
		1558	int
		1559	ev_clear_pending (EV_P_ void *w)
		1560	{
		1561	W w_ = (W)w;
		1562	int pending = w_->pending;
		1563
		1564	if (expect_true (pending))
		1565	{
		1566	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1567	w_->pending = 0;
		1568	p->w = 0;
		1569	return p->events;
		1570	}
		1571	else
		1572	return 0;
		1573	}
		1574
		1575	void inline_size
		1576	pri_adjust (EV_P_ W w)
		1577	{
		1578	int pri = w->priority;
		1579	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1580	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1581	w->priority = pri;
		1582	}
		1583
1397	void inline_speed	1584	void inline_speed
1398	ev_start (EV_P_ W w, int active)	1585	ev_start (EV_P_ W w, int active)
1399	{	1586	{
1400	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1587	pri_adjust (EV_A_ w);
1401	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1402
1403	w->active = active;	1588	w->active = active;
1404	ev_ref (EV_A);	1589	ev_ref (EV_A);
1405	}	1590	}
1406		1591
1407	void inline_size	1592	void inline_size
…		…
1411	w->active = 0;	1596	w->active = 0;
1412	}	1597	}
1413		1598
1414	/*****************************************************************************/	1599	/*****************************************************************************/
1415		1600
1416	void	1601	void noinline
1417	ev_io_start (EV_P_ ev_io *w)	1602	ev_io_start (EV_P_ ev_io *w)
1418	{	1603	{
1419	int fd = w->fd;	1604	int fd = w->fd;
1420		1605
1421	if (expect_false (ev_is_active (w)))	1606	if (expect_false (ev_is_active (w)))
…		…
1423		1608
1424	assert (("ev_io_start called with negative fd", fd >= 0));	1609	assert (("ev_io_start called with negative fd", fd >= 0));
1425		1610
1426	ev_start (EV_A_ (W)w, 1);	1611	ev_start (EV_A_ (W)w, 1);
1427	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1612	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1428	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1613	wlist_add (&anfds[fd].head, (WL)w);
1429		1614
1430	fd_change (EV_A_ fd);	1615	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1616	w->events &= ~EV_IOFDSET;
1431	}	1617	}
1432		1618
1433	void	1619	void noinline
1434	ev_io_stop (EV_P_ ev_io *w)	1620	ev_io_stop (EV_P_ ev_io *w)
1435	{	1621	{
1436	ev_clear_pending (EV_A_ (W)w);	1622	clear_pending (EV_A_ (W)w);
1437	if (expect_false (!ev_is_active (w)))	1623	if (expect_false (!ev_is_active (w)))
1438	return;	1624	return;
1439		1625
1440	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1626	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1441		1627
1442	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1628	wlist_del (&anfds[w->fd].head, (WL)w);
1443	ev_stop (EV_A_ (W)w);	1629	ev_stop (EV_A_ (W)w);
1444		1630
1445	fd_change (EV_A_ w->fd);	1631	fd_change (EV_A_ w->fd, 1);
1446	}	1632	}
1447		1633
1448	void	1634	void noinline
1449	ev_timer_start (EV_P_ ev_timer *w)	1635	ev_timer_start (EV_P_ ev_timer *w)
1450	{	1636	{
1451	if (expect_false (ev_is_active (w)))	1637	if (expect_false (ev_is_active (w)))
1452	return;	1638	return;
1453		1639
1454	((WT)w)->at += mn_now;	1640	((WT)w)->at += mn_now;
1455		1641
1456	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1642	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1457		1643
1458	ev_start (EV_A_ (W)w, ++timercnt);	1644	ev_start (EV_A_ (W)w, ++timercnt);
1459	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1645	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1460	timers [timercnt - 1] = w;	1646	timers [timercnt - 1] = (WT)w;
1461	upheap ((WT *)timers, timercnt - 1);	1647	upheap (timers, timercnt - 1);
1462		1648
1463	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1649	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1464	}	1650	}
1465		1651
1466	void	1652	void noinline
1467	ev_timer_stop (EV_P_ ev_timer *w)	1653	ev_timer_stop (EV_P_ ev_timer *w)
1468	{	1654	{
1469	ev_clear_pending (EV_A_ (W)w);	1655	clear_pending (EV_A_ (W)w);
1470	if (expect_false (!ev_is_active (w)))	1656	if (expect_false (!ev_is_active (w)))
1471	return;	1657	return;
1472		1658
1473	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1659	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1474		1660
		1661	{
		1662	int active = ((W)w)->active;
		1663
1475	if (expect_true (((W)w)->active < timercnt--))	1664	if (expect_true (--active < --timercnt))
1476	{	1665	{
1477	timers [((W)w)->active - 1] = timers [timercnt];	1666	timers [active] = timers [timercnt];
1478	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1667	adjustheap (timers, timercnt, active);
1479	}	1668	}
		1669	}
1480		1670
1481	((WT)w)->at -= mn_now;	1671	((WT)w)->at -= mn_now;
1482		1672
1483	ev_stop (EV_A_ (W)w);	1673	ev_stop (EV_A_ (W)w);
1484	}	1674	}
1485		1675
1486	void	1676	void noinline
1487	ev_timer_again (EV_P_ ev_timer *w)	1677	ev_timer_again (EV_P_ ev_timer *w)
1488	{	1678	{
1489	if (ev_is_active (w))	1679	if (ev_is_active (w))
1490	{	1680	{
1491	if (w->repeat)	1681	if (w->repeat)
1492	{	1682	{
1493	((WT)w)->at = mn_now + w->repeat;	1683	((WT)w)->at = mn_now + w->repeat;
1494	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1684	adjustheap (timers, timercnt, ((W)w)->active - 1);
1495	}	1685	}
1496	else	1686	else
1497	ev_timer_stop (EV_A_ w);	1687	ev_timer_stop (EV_A_ w);
1498	}	1688	}
1499	else if (w->repeat)	1689	else if (w->repeat)
…		…
1502	ev_timer_start (EV_A_ w);	1692	ev_timer_start (EV_A_ w);
1503	}	1693	}
1504	}	1694	}
1505		1695
1506	#if EV_PERIODIC_ENABLE	1696	#if EV_PERIODIC_ENABLE
1507	void	1697	void noinline
1508	ev_periodic_start (EV_P_ ev_periodic *w)	1698	ev_periodic_start (EV_P_ ev_periodic *w)
1509	{	1699	{
1510	if (expect_false (ev_is_active (w)))	1700	if (expect_false (ev_is_active (w)))
1511	return;	1701	return;
1512		1702
…		…
1514	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1704	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1515	else if (w->interval)	1705	else if (w->interval)
1516	{	1706	{
1517	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1707	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1518	/* this formula differs from the one in periodic_reify because we do not always round up */	1708	/* this formula differs from the one in periodic_reify because we do not always round up */
1519	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1709	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1520	}	1710	}
		1711	else
		1712	((WT)w)->at = w->offset;
1521		1713
1522	ev_start (EV_A_ (W)w, ++periodiccnt);	1714	ev_start (EV_A_ (W)w, ++periodiccnt);
1523	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1715	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1524	periodics [periodiccnt - 1] = w;	1716	periodics [periodiccnt - 1] = (WT)w;
1525	upheap ((WT *)periodics, periodiccnt - 1);	1717	upheap (periodics, periodiccnt - 1);
1526		1718
1527	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1719	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1528	}	1720	}
1529		1721
1530	void	1722	void noinline
1531	ev_periodic_stop (EV_P_ ev_periodic *w)	1723	ev_periodic_stop (EV_P_ ev_periodic *w)
1532	{	1724	{
1533	ev_clear_pending (EV_A_ (W)w);	1725	clear_pending (EV_A_ (W)w);
1534	if (expect_false (!ev_is_active (w)))	1726	if (expect_false (!ev_is_active (w)))
1535	return;	1727	return;
1536		1728
1537	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1729	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1538		1730
		1731	{
		1732	int active = ((W)w)->active;
		1733
1539	if (expect_true (((W)w)->active < periodiccnt--))	1734	if (expect_true (--active < --periodiccnt))
1540	{	1735	{
1541	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1736	periodics [active] = periodics [periodiccnt];
1542	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1737	adjustheap (periodics, periodiccnt, active);
1543	}	1738	}
		1739	}
1544		1740
1545	ev_stop (EV_A_ (W)w);	1741	ev_stop (EV_A_ (W)w);
1546	}	1742	}
1547		1743
1548	void	1744	void noinline
1549	ev_periodic_again (EV_P_ ev_periodic *w)	1745	ev_periodic_again (EV_P_ ev_periodic *w)
1550	{	1746	{
1551	/* TODO: use adjustheap and recalculation */	1747	/* TODO: use adjustheap and recalculation */
1552	ev_periodic_stop (EV_A_ w);	1748	ev_periodic_stop (EV_A_ w);
1553	ev_periodic_start (EV_A_ w);	1749	ev_periodic_start (EV_A_ w);
1554	}	1750	}
1555	#endif	1751	#endif
1556		1752
1557	void
1558	ev_idle_start (EV_P_ ev_idle *w)
1559	{
1560	if (expect_false (ev_is_active (w)))
1561	return;
1562
1563	ev_start (EV_A_ (W)w, ++idlecnt);
1564	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1565	idles [idlecnt - 1] = w;
1566	}
1567
1568	void
1569	ev_idle_stop (EV_P_ ev_idle *w)
1570	{
1571	ev_clear_pending (EV_A_ (W)w);
1572	if (expect_false (!ev_is_active (w)))
1573	return;
1574
1575	{
1576	int active = ((W)w)->active;
1577	idles [active - 1] = idles [--idlecnt];
1578	((W)idles [active - 1])->active = active;
1579	}
1580
1581	ev_stop (EV_A_ (W)w);
1582	}
1583
1584	void
1585	ev_prepare_start (EV_P_ ev_prepare *w)
1586	{
1587	if (expect_false (ev_is_active (w)))
1588	return;
1589
1590	ev_start (EV_A_ (W)w, ++preparecnt);
1591	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1592	prepares [preparecnt - 1] = w;
1593	}
1594
1595	void
1596	ev_prepare_stop (EV_P_ ev_prepare *w)
1597	{
1598	ev_clear_pending (EV_A_ (W)w);
1599	if (expect_false (!ev_is_active (w)))
1600	return;
1601
1602	{
1603	int active = ((W)w)->active;
1604	prepares [active - 1] = prepares [--preparecnt];
1605	((W)prepares [active - 1])->active = active;
1606	}
1607
1608	ev_stop (EV_A_ (W)w);
1609	}
1610
1611	void
1612	ev_check_start (EV_P_ ev_check *w)
1613	{
1614	if (expect_false (ev_is_active (w)))
1615	return;
1616
1617	ev_start (EV_A_ (W)w, ++checkcnt);
1618	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1619	checks [checkcnt - 1] = w;
1620	}
1621
1622	void
1623	ev_check_stop (EV_P_ ev_check *w)
1624	{
1625	ev_clear_pending (EV_A_ (W)w);
1626	if (expect_false (!ev_is_active (w)))
1627	return;
1628
1629	{
1630	int active = ((W)w)->active;
1631	checks [active - 1] = checks [--checkcnt];
1632	((W)checks [active - 1])->active = active;
1633	}
1634
1635	ev_stop (EV_A_ (W)w);
1636	}
1637
1638	#ifndef SA_RESTART	1753	#ifndef SA_RESTART
1639	# define SA_RESTART 0	1754	# define SA_RESTART 0
1640	#endif	1755	#endif
1641		1756
1642	void	1757	void noinline
1643	ev_signal_start (EV_P_ ev_signal *w)	1758	ev_signal_start (EV_P_ ev_signal *w)
1644	{	1759	{
1645	#if EV_MULTIPLICITY	1760	#if EV_MULTIPLICITY
1646	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1761	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1647	#endif	1762	#endif
1648	if (expect_false (ev_is_active (w)))	1763	if (expect_false (ev_is_active (w)))
1649	return;	1764	return;
1650		1765
1651	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1766	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1652		1767
		1768	{
		1769	#ifndef _WIN32
		1770	sigset_t full, prev;
		1771	sigfillset (&full);
		1772	sigprocmask (SIG_SETMASK, &full, &prev);
		1773	#endif
		1774
		1775	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1776
		1777	#ifndef _WIN32
		1778	sigprocmask (SIG_SETMASK, &prev, 0);
		1779	#endif
		1780	}
		1781
1653	ev_start (EV_A_ (W)w, 1);	1782	ev_start (EV_A_ (W)w, 1);
1654	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1655	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1783	wlist_add (&signals [w->signum - 1].head, (WL)w);
1656		1784
1657	if (!((WL)w)->next)	1785	if (!((WL)w)->next)
1658	{	1786	{
1659	#if _WIN32	1787	#if _WIN32
1660	signal (w->signum, sighandler);	1788	signal (w->signum, sighandler);
…		…
1666	sigaction (w->signum, &sa, 0);	1794	sigaction (w->signum, &sa, 0);
1667	#endif	1795	#endif
1668	}	1796	}
1669	}	1797	}
1670		1798
1671	void	1799	void noinline
1672	ev_signal_stop (EV_P_ ev_signal *w)	1800	ev_signal_stop (EV_P_ ev_signal *w)
1673	{	1801	{
1674	ev_clear_pending (EV_A_ (W)w);	1802	clear_pending (EV_A_ (W)w);
1675	if (expect_false (!ev_is_active (w)))	1803	if (expect_false (!ev_is_active (w)))
1676	return;	1804	return;
1677		1805
1678	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1806	wlist_del (&signals [w->signum - 1].head, (WL)w);
1679	ev_stop (EV_A_ (W)w);	1807	ev_stop (EV_A_ (W)w);
1680		1808
1681	if (!signals [w->signum - 1].head)	1809	if (!signals [w->signum - 1].head)
1682	signal (w->signum, SIG_DFL);	1810	signal (w->signum, SIG_DFL);
1683	}	1811	}
…		…
1690	#endif	1818	#endif
1691	if (expect_false (ev_is_active (w)))	1819	if (expect_false (ev_is_active (w)))
1692	return;	1820	return;
1693		1821
1694	ev_start (EV_A_ (W)w, 1);	1822	ev_start (EV_A_ (W)w, 1);
1695	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1823	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1696	}	1824	}
1697		1825
1698	void	1826	void
1699	ev_child_stop (EV_P_ ev_child *w)	1827	ev_child_stop (EV_P_ ev_child *w)
1700	{	1828	{
1701	ev_clear_pending (EV_A_ (W)w);	1829	clear_pending (EV_A_ (W)w);
1702	if (expect_false (!ev_is_active (w)))	1830	if (expect_false (!ev_is_active (w)))
1703	return;	1831	return;
1704		1832
1705	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1833	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		1834	ev_stop (EV_A_ (W)w);
		1835	}
		1836
		1837	#if EV_STAT_ENABLE
		1838
		1839	# ifdef _WIN32
		1840	# undef lstat
		1841	# define lstat(a,b) _stati64 (a,b)
		1842	# endif
		1843
		1844	#define DEF_STAT_INTERVAL 5.0074891
		1845	#define MIN_STAT_INTERVAL 0.1074891
		1846
		1847	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1848
		1849	#if EV_USE_INOTIFY
		1850	# define EV_INOTIFY_BUFSIZE 8192
		1851
		1852	static void noinline
		1853	infy_add (EV_P_ ev_stat *w)
		1854	{
		1855	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);
		1856
		1857	if (w->wd < 0)
		1858	{
		1859	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1860
		1861	/* monitor some parent directory for speedup hints */
		1862	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1863	{
		1864	char path [4096];
		1865	strcpy (path, w->path);
		1866
		1867	do
		1868	{
		1869	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1870	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1871
		1872	char *pend = strrchr (path, '/');
		1873
		1874	if (!pend)
		1875	break; /* whoops, no '/', complain to your admin */
		1876
		1877	*pend = 0;
		1878	w->wd = inotify_add_watch (fs_fd, path, mask);
		1879	}
		1880	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1881	}
		1882	}
		1883	else
		1884	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1885
		1886	if (w->wd >= 0)
		1887	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1888	}
		1889
		1890	static void noinline
		1891	infy_del (EV_P_ ev_stat *w)
		1892	{
		1893	int slot;
		1894	int wd = w->wd;
		1895
		1896	if (wd < 0)
		1897	return;
		1898
		1899	w->wd = -2;
		1900	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1901	wlist_del (&fs_hash [slot].head, (WL)w);
		1902
		1903	/* remove this watcher, if others are watching it, they will rearm */
		1904	inotify_rm_watch (fs_fd, wd);
		1905	}
		1906
		1907	static void noinline
		1908	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1909	{
		1910	if (slot < 0)
		1911	/* overflow, need to check for all hahs slots */
		1912	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1913	infy_wd (EV_A_ slot, wd, ev);
		1914	else
		1915	{
		1916	WL w_;
		1917
		1918	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1919	{
		1920	ev_stat *w = (ev_stat *)w_;
		1921	w_ = w_->next; /* lets us remove this watcher and all before it */
		1922
		1923	if (w->wd == wd || wd == -1)
		1924	{
		1925	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1926	{
		1927	w->wd = -1;
		1928	infy_add (EV_A_ w); /* re-add, no matter what */
		1929	}
		1930
		1931	stat_timer_cb (EV_A_ &w->timer, 0);
		1932	}
		1933	}
		1934	}
		1935	}
		1936
		1937	static void
		1938	infy_cb (EV_P_ ev_io *w, int revents)
		1939	{
		1940	char buf [EV_INOTIFY_BUFSIZE];
		1941	struct inotify_event *ev = (struct inotify_event *)buf;
		1942	int ofs;
		1943	int len = read (fs_fd, buf, sizeof (buf));
		1944
		1945	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1946	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1947	}
		1948
		1949	void inline_size
		1950	infy_init (EV_P)
		1951	{
		1952	if (fs_fd != -2)
		1953	return;
		1954
		1955	fs_fd = inotify_init ();
		1956
		1957	if (fs_fd >= 0)
		1958	{
		1959	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1960	ev_set_priority (&fs_w, EV_MAXPRI);
		1961	ev_io_start (EV_A_ &fs_w);
		1962	}
		1963	}
		1964
		1965	void inline_size
		1966	infy_fork (EV_P)
		1967	{
		1968	int slot;
		1969
		1970	if (fs_fd < 0)
		1971	return;
		1972
		1973	close (fs_fd);
		1974	fs_fd = inotify_init ();
		1975
		1976	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1977	{
		1978	WL w_ = fs_hash [slot].head;
		1979	fs_hash [slot].head = 0;
		1980
		1981	while (w_)
		1982	{
		1983	ev_stat *w = (ev_stat *)w_;
		1984	w_ = w_->next; /* lets us add this watcher */
		1985
		1986	w->wd = -1;
		1987
		1988	if (fs_fd >= 0)
		1989	infy_add (EV_A_ w); /* re-add, no matter what */
		1990	else
		1991	ev_timer_start (EV_A_ &w->timer);
		1992	}
		1993
		1994	}
		1995	}
		1996
		1997	#endif
		1998
		1999	void
		2000	ev_stat_stat (EV_P_ ev_stat *w)
		2001	{
		2002	if (lstat (w->path, &w->attr) < 0)
		2003	w->attr.st_nlink = 0;
		2004	else if (!w->attr.st_nlink)
		2005	w->attr.st_nlink = 1;
		2006	}
		2007
		2008	static void noinline
		2009	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2010	{
		2011	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2012
		2013	/* we copy this here each the time so that */
		2014	/* prev has the old value when the callback gets invoked */
		2015	w->prev = w->attr;
		2016	ev_stat_stat (EV_A_ w);
		2017
		2018	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2019	if (
		2020	w->prev.st_dev != w->attr.st_dev
		2021	|| w->prev.st_ino != w->attr.st_ino
		2022	|| w->prev.st_mode != w->attr.st_mode
		2023	|| w->prev.st_nlink != w->attr.st_nlink
		2024	|| w->prev.st_uid != w->attr.st_uid
		2025	|| w->prev.st_gid != w->attr.st_gid
		2026	|| w->prev.st_rdev != w->attr.st_rdev
		2027	|| w->prev.st_size != w->attr.st_size
		2028	|| w->prev.st_atime != w->attr.st_atime
		2029	|| w->prev.st_mtime != w->attr.st_mtime
		2030	|| w->prev.st_ctime != w->attr.st_ctime
		2031	) {
		2032	#if EV_USE_INOTIFY
		2033	infy_del (EV_A_ w);
		2034	infy_add (EV_A_ w);
		2035	ev_stat_stat (EV_A_ w); /* avoid race... */
		2036	#endif
		2037
		2038	ev_feed_event (EV_A_ w, EV_STAT);
		2039	}
		2040	}
		2041
		2042	void
		2043	ev_stat_start (EV_P_ ev_stat *w)
		2044	{
		2045	if (expect_false (ev_is_active (w)))
		2046	return;
		2047
		2048	/* since we use memcmp, we need to clear any padding data etc. */
		2049	memset (&w->prev, 0, sizeof (ev_statdata));
		2050	memset (&w->attr, 0, sizeof (ev_statdata));
		2051
		2052	ev_stat_stat (EV_A_ w);
		2053
		2054	if (w->interval < MIN_STAT_INTERVAL)
		2055	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2056
		2057	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2058	ev_set_priority (&w->timer, ev_priority (w));
		2059
		2060	#if EV_USE_INOTIFY
		2061	infy_init (EV_A);
		2062
		2063	if (fs_fd >= 0)
		2064	infy_add (EV_A_ w);
		2065	else
		2066	#endif
		2067	ev_timer_start (EV_A_ &w->timer);
		2068
		2069	ev_start (EV_A_ (W)w, 1);
		2070	}
		2071
		2072	void
		2073	ev_stat_stop (EV_P_ ev_stat *w)
		2074	{
		2075	clear_pending (EV_A_ (W)w);
		2076	if (expect_false (!ev_is_active (w)))
		2077	return;
		2078
		2079	#if EV_USE_INOTIFY
		2080	infy_del (EV_A_ w);
		2081	#endif
		2082	ev_timer_stop (EV_A_ &w->timer);
		2083
		2084	ev_stop (EV_A_ (W)w);
		2085	}
		2086	#endif
		2087
		2088	#if EV_IDLE_ENABLE
		2089	void
		2090	ev_idle_start (EV_P_ ev_idle *w)
		2091	{
		2092	if (expect_false (ev_is_active (w)))
		2093	return;
		2094
		2095	pri_adjust (EV_A_ (W)w);
		2096
		2097	{
		2098	int active = ++idlecnt [ABSPRI (w)];
		2099
		2100	++idleall;
		2101	ev_start (EV_A_ (W)w, active);
		2102
		2103	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2104	idles [ABSPRI (w)][active - 1] = w;
		2105	}
		2106	}
		2107
		2108	void
		2109	ev_idle_stop (EV_P_ ev_idle *w)
		2110	{
		2111	clear_pending (EV_A_ (W)w);
		2112	if (expect_false (!ev_is_active (w)))
		2113	return;
		2114
		2115	{
		2116	int active = ((W)w)->active;
		2117
		2118	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2119	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2120
		2121	ev_stop (EV_A_ (W)w);
		2122	--idleall;
		2123	}
		2124	}
		2125	#endif
		2126
		2127	void
		2128	ev_prepare_start (EV_P_ ev_prepare *w)
		2129	{
		2130	if (expect_false (ev_is_active (w)))
		2131	return;
		2132
		2133	ev_start (EV_A_ (W)w, ++preparecnt);
		2134	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2135	prepares [preparecnt - 1] = w;
		2136	}
		2137
		2138	void
		2139	ev_prepare_stop (EV_P_ ev_prepare *w)
		2140	{
		2141	clear_pending (EV_A_ (W)w);
		2142	if (expect_false (!ev_is_active (w)))
		2143	return;
		2144
		2145	{
		2146	int active = ((W)w)->active;
		2147	prepares [active - 1] = prepares [--preparecnt];
		2148	((W)prepares [active - 1])->active = active;
		2149	}
		2150
		2151	ev_stop (EV_A_ (W)w);
		2152	}
		2153
		2154	void
		2155	ev_check_start (EV_P_ ev_check *w)
		2156	{
		2157	if (expect_false (ev_is_active (w)))
		2158	return;
		2159
		2160	ev_start (EV_A_ (W)w, ++checkcnt);
		2161	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2162	checks [checkcnt - 1] = w;
		2163	}
		2164
		2165	void
		2166	ev_check_stop (EV_P_ ev_check *w)
		2167	{
		2168	clear_pending (EV_A_ (W)w);
		2169	if (expect_false (!ev_is_active (w)))
		2170	return;
		2171
		2172	{
		2173	int active = ((W)w)->active;
		2174	checks [active - 1] = checks [--checkcnt];
		2175	((W)checks [active - 1])->active = active;
		2176	}
		2177
1706	ev_stop (EV_A_ (W)w);	2178	ev_stop (EV_A_ (W)w);
1707	}	2179	}
1708		2180
1709	#if EV_EMBED_ENABLE	2181	#if EV_EMBED_ENABLE
1710	void noinline	2182	void noinline
…		…
1743	}	2215	}
1744		2216
1745	void	2217	void
1746	ev_embed_stop (EV_P_ ev_embed *w)	2218	ev_embed_stop (EV_P_ ev_embed *w)
1747	{	2219	{
1748	ev_clear_pending (EV_A_ (W)w);	2220	clear_pending (EV_A_ (W)w);
1749	if (expect_false (!ev_is_active (w)))	2221	if (expect_false (!ev_is_active (w)))
1750	return;	2222	return;
1751		2223
1752	ev_io_stop (EV_A_ &w->io);	2224	ev_io_stop (EV_A_ &w->io);
1753		2225
1754	ev_stop (EV_A_ (W)w);	2226	ev_stop (EV_A_ (W)w);
1755	}	2227	}
1756	#endif	2228	#endif
1757		2229
1758	#if EV_STAT_ENABLE	2230	#if EV_FORK_ENABLE
1759
1760	# ifdef _WIN32
1761	# define lstat(a,b) stat(a,b)
1762	# endif
1763
1764	void	2231	void
1765	ev_stat_stat (EV_P_ ev_stat *w)
1766	{
1767	if (lstat (w->path, &w->attr) < 0)
1768	w->attr.st_nlink = 0;
1769	else if (!w->attr.st_nlink)
1770	w->attr.st_nlink = 1;
1771	}
1772
1773	static void
1774	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1775	{
1776	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1777
1778	/* we copy this here each the time so that */
1779	/* prev has the old value when the callback gets invoked */
1780	w->prev = w->attr;
1781	ev_stat_stat (EV_A_ w);
1782
1783	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
1784	ev_feed_event (EV_A_ w, EV_STAT);
1785	}
1786
1787	void
1788	ev_stat_start (EV_P_ ev_stat *w)	2232	ev_fork_start (EV_P_ ev_fork *w)
1789	{	2233	{
1790	if (expect_false (ev_is_active (w)))	2234	if (expect_false (ev_is_active (w)))
1791	return;	2235	return;
1792		2236
1793	/* since we use memcmp, we need to clear any padding data etc. */
1794	memset (&w->prev, 0, sizeof (ev_statdata));
1795	memset (&w->attr, 0, sizeof (ev_statdata));
1796
1797	ev_stat_stat (EV_A_ w);
1798
1799	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1800	ev_set_priority (&w->timer, ev_priority (w));
1801	ev_timer_start (EV_A_ &w->timer);
1802
1803	ev_start (EV_A_ (W)w, 1);	2237	ev_start (EV_A_ (W)w, ++forkcnt);
		2238	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2239	forks [forkcnt - 1] = w;
1804	}	2240	}
1805		2241
1806	void	2242	void
1807	ev_stat_stop (EV_P_ ev_stat *w)	2243	ev_fork_stop (EV_P_ ev_fork *w)
1808	{	2244	{
1809	ev_clear_pending (EV_A_ (W)w);	2245	clear_pending (EV_A_ (W)w);
1810	if (expect_false (!ev_is_active (w)))	2246	if (expect_false (!ev_is_active (w)))
1811	return;	2247	return;
1812		2248
1813	ev_timer_stop (EV_A_ &w->timer);	2249	{
		2250	int active = ((W)w)->active;
		2251	forks [active - 1] = forks [--forkcnt];
		2252	((W)forks [active - 1])->active = active;
		2253	}
1814		2254
1815	ev_stop (EV_A_ (W)w);	2255	ev_stop (EV_A_ (W)w);
1816	}	2256	}
1817	#endif	2257	#endif
1818		2258

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