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Comparing libev/ev.c (file contents):
Revision 1.138 by root, Sat Nov 24 09:48:38 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>
…		…
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>
114		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
115	#ifndef _WIN32	129	#ifndef _WIN32
116	# include <unistd.h>
117	# include <sys/time.h>	130	# include <sys/time.h>
118	# include <sys/wait.h>	131	# include <sys/wait.h>
		132	# include <unistd.h>
119	#else	133	#else
120	# define WIN32_LEAN_AND_MEAN	134	# define WIN32_LEAN_AND_MEAN
121	# include <windows.h>	135	# include <windows.h>
122	# ifndef EV_SELECT_IS_WINSOCKET	136	# ifndef EV_SELECT_IS_WINSOCKET
123	# define EV_SELECT_IS_WINSOCKET 1	137	# define EV_SELECT_IS_WINSOCKET 1
…		…
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 static inline	238	# define noinline __attribute__ ((noinline))
193	#else	239	#else
194	# define expect(expr,value) (expr)	240	# define expect(expr,value) (expr)
195	# define inline static	241	# define noinline
		242	# if __STDC_VERSION__ < 199901L
		243	# define inline
		244	# endif
196	#endif	245	#endif
197		246
198	#define expect_false(expr) expect ((expr) != 0, 0)	247	#define expect_false(expr) expect ((expr) != 0, 0)
199	#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
200		256
201	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	257	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
202	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	258	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
203		259
204	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	260	#define EMPTY /* required for microsofts broken pseudo-c compiler */
205	#define EMPTY2(a,b) /* used to suppress some warnings */	261	#define EMPTY2(a,b) /* used to suppress some warnings */
206		262
207	typedef ev_watcher *W;	263	typedef ev_watcher *W;
208	typedef ev_watcher_list *WL;	264	typedef ev_watcher_list *WL;
209	typedef ev_watcher_time *WT;	265	typedef ev_watcher_time *WT;
…		…
216		272
217	/*****************************************************************************/	273	/*****************************************************************************/
218		274
219	static void (*syserr_cb)(const char *msg);	275	static void (*syserr_cb)(const char *msg);
220		276
		277	void
221	void ev_set_syserr_cb (void (*cb)(const char *msg))	278	ev_set_syserr_cb (void (*cb)(const char *msg))
222	{	279	{
223	syserr_cb = cb;	280	syserr_cb = cb;
224	}	281	}
225		282
226	static void	283	static void noinline
227	syserr (const char *msg)	284	syserr (const char *msg)
228	{	285	{
229	if (!msg)	286	if (!msg)
230	msg = "(libev) system error";	287	msg = "(libev) system error";
231		288
…		…
238	}	295	}
239	}	296	}
240		297
241	static void *(*alloc)(void *ptr, long size);	298	static void *(*alloc)(void *ptr, long size);
242		299
		300	void
243	void ev_set_allocator (void *(*cb)(void *ptr, long size))	301	ev_set_allocator (void *(*cb)(void *ptr, long size))
244	{	302	{
245	alloc = cb;	303	alloc = cb;
246	}	304	}
247		305
248	static void *	306	inline_speed void *
249	ev_realloc (void *ptr, long size)	307	ev_realloc (void *ptr, long size)
250	{	308	{
251	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	309	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
252		310
253	if (!ptr && size)	311	if (!ptr && size)
…		…
277	typedef struct	335	typedef struct
278	{	336	{
279	W w;	337	W w;
280	int events;	338	int events;
281	} ANPENDING;	339	} ANPENDING;
		340
		341	#if EV_USE_INOTIFY
		342	typedef struct
		343	{
		344	WL head;
		345	} ANFS;
		346	#endif
282		347
283	#if EV_MULTIPLICITY	348	#if EV_MULTIPLICITY
284		349
285	struct ev_loop	350	struct ev_loop
286	{	351	{
…		…
320	gettimeofday (&tv, 0);	385	gettimeofday (&tv, 0);
321	return tv.tv_sec + tv.tv_usec * 1e-6;	386	return tv.tv_sec + tv.tv_usec * 1e-6;
322	#endif	387	#endif
323	}	388	}
324		389
325	inline ev_tstamp	390	ev_tstamp inline_size
326	get_clock (void)	391	get_clock (void)
327	{	392	{
328	#if EV_USE_MONOTONIC	393	#if EV_USE_MONOTONIC
329	if (expect_true (have_monotonic))	394	if (expect_true (have_monotonic))
330	{	395	{
…		…
343	{	408	{
344	return ev_rt_now;	409	return ev_rt_now;
345	}	410	}
346	#endif	411	#endif
347		412
348	#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	}
349		440
350	#define array_needsize(type,base,cur,cnt,init) \	441	#define array_needsize(type,base,cur,cnt,init) \
351	if (expect_false ((cnt) > cur)) \	442	if (expect_false ((cnt) > (cur))) \
352	{ \	443	{ \
353	int newcnt = cur; \	444	int ocur_ = (cur); \
354	do \	445	(base) = (type *)array_realloc \
355	{ \	446	(sizeof (type), (base), &(cur), (cnt)); \
356	newcnt = array_roundsize (type, newcnt << 1); \	447	init ((base) + (ocur_), (cur) - ocur_); \
357	} \
358	while ((cnt) > newcnt); \
359	\
360	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
361	init (base + cur, newcnt - cur); \
362	cur = newcnt; \
363	}	448	}
364		449
		450	#if 0
365	#define array_slim(type,stem) \	451	#define array_slim(type,stem) \
366	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	452	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
367	{ \	453	{ \
368	stem ## max = array_roundsize (stem ## cnt >> 1); \	454	stem ## max = array_roundsize (stem ## cnt >> 1); \
369	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	455	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
370	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	456	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
371	}	457	}
		458	#endif
372		459
373	#define array_free(stem, idx) \	460	#define array_free(stem, idx) \
374	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;
375		462
376	/*****************************************************************************/	463	/*****************************************************************************/
377		464
378	static void	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	}
		490
		491	/*****************************************************************************/
		492
		493	void inline_size
379	anfds_init (ANFD *base, int count)	494	anfds_init (ANFD *base, int count)
380	{	495	{
381	while (count--)	496	while (count--)
382	{	497	{
383	base->head = 0;	498	base->head = 0;
…		…
386		501
387	++base;	502	++base;
388	}	503	}
389	}	504	}
390		505
391	void	506	void inline_speed
392	ev_feed_event (EV_P_ void *w, int revents)
393	{
394	W w_ = (W)w;
395
396	if (expect_false (w_->pending))
397	{
398	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
399	return;
400	}
401
402	w_->pending = ++pendingcnt [ABSPRI (w_)];
403	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
404	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
405	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
406	}
407
408	static void
409	queue_events (EV_P_ W *events, int eventcnt, int type)
410	{
411	int i;
412
413	for (i = 0; i < eventcnt; ++i)
414	ev_feed_event (EV_A_ events [i], type);
415	}
416
417	inline void
418	fd_event (EV_P_ int fd, int revents)	507	fd_event (EV_P_ int fd, int revents)
419	{	508	{
420	ANFD *anfd = anfds + fd;	509	ANFD *anfd = anfds + fd;
421	ev_io *w;	510	ev_io *w;
422		511
…		…
430	}	519	}
431		520
432	void	521	void
433	ev_feed_fd_event (EV_P_ int fd, int revents)	522	ev_feed_fd_event (EV_P_ int fd, int revents)
434	{	523	{
		524	if (fd >= 0 && fd < anfdmax)
435	fd_event (EV_A_ fd, revents);	525	fd_event (EV_A_ fd, revents);
436	}	526	}
437		527
438	/*****************************************************************************/	528	void inline_size
439
440	inline void
441	fd_reify (EV_P)	529	fd_reify (EV_P)
442	{	530	{
443	int i;	531	int i;
444		532
445	for (i = 0; i < fdchangecnt; ++i)	533	for (i = 0; i < fdchangecnt; ++i)
446	{	534	{
447	int fd = fdchanges [i];	535	int fd = fdchanges [i];
448	ANFD *anfd = anfds + fd;	536	ANFD *anfd = anfds + fd;
449	ev_io *w;	537	ev_io *w;
450		538
451	int events = 0;	539	unsigned char events = 0;
452		540
453	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)
454	events |= w->events;	542	events |= (unsigned char)w->events;
455		543
456	#if EV_SELECT_IS_WINSOCKET	544	#if EV_SELECT_IS_WINSOCKET
457	if (events)	545	if (events)
458	{	546	{
459	unsigned long argp;	547	unsigned long argp;
460	anfd->handle = _get_osfhandle (fd);	548	anfd->handle = _get_osfhandle (fd);
461	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));
462	}	550	}
463	#endif	551	#endif
464		552
		553	{
		554	unsigned char o_events = anfd->events;
		555	unsigned char o_reify = anfd->reify;
		556
465	anfd->reify = 0;	557	anfd->reify = 0;
466
467	backend_modify (EV_A_ fd, anfd->events, events);
468	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	}
469	}	563	}
470		564
471	fdchangecnt = 0;	565	fdchangecnt = 0;
472	}	566	}
473		567
474	static void	568	void inline_size
475	fd_change (EV_P_ int fd)	569	fd_change (EV_P_ int fd, int flags)
476	{	570	{
477	if (expect_false (anfds [fd].reify))	571	unsigned char reify = anfds [fd].reify;
478	return;
479
480	anfds [fd].reify = 1;	572	anfds [fd].reify |= flags;
481		573
		574	if (expect_true (!reify))
		575	{
482	++fdchangecnt;	576	++fdchangecnt;
483	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	577	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
484	fdchanges [fdchangecnt - 1] = fd;	578	fdchanges [fdchangecnt - 1] = fd;
		579	}
485	}	580	}
486		581
487	static void	582	void inline_speed
488	fd_kill (EV_P_ int fd)	583	fd_kill (EV_P_ int fd)
489	{	584	{
490	ev_io *w;	585	ev_io *w;
491		586
492	while ((w = (ev_io *)anfds [fd].head))	587	while ((w = (ev_io *)anfds [fd].head))
…		…
494	ev_io_stop (EV_A_ w);	589	ev_io_stop (EV_A_ w);
495	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	590	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
496	}	591	}
497	}	592	}
498		593
499	inline int	594	int inline_size
500	fd_valid (int fd)	595	fd_valid (int fd)
501	{	596	{
502	#ifdef _WIN32	597	#ifdef _WIN32
503	return _get_osfhandle (fd) != -1;	598	return _get_osfhandle (fd) != -1;
504	#else	599	#else
505	return fcntl (fd, F_GETFD) != -1;	600	return fcntl (fd, F_GETFD) != -1;
506	#endif	601	#endif
507	}	602	}
508		603
509	/* called on EBADF to verify fds */	604	/* called on EBADF to verify fds */
510	static void	605	static void noinline
511	fd_ebadf (EV_P)	606	fd_ebadf (EV_P)
512	{	607	{
513	int fd;	608	int fd;
514		609
515	for (fd = 0; fd < anfdmax; ++fd)	610	for (fd = 0; fd < anfdmax; ++fd)
…		…
517	if (!fd_valid (fd) == -1 && errno == EBADF)	612	if (!fd_valid (fd) == -1 && errno == EBADF)
518	fd_kill (EV_A_ fd);	613	fd_kill (EV_A_ fd);
519	}	614	}
520		615
521	/* called on ENOMEM in select/poll to kill some fds and retry */	616	/* called on ENOMEM in select/poll to kill some fds and retry */
522	static void	617	static void noinline
523	fd_enomem (EV_P)	618	fd_enomem (EV_P)
524	{	619	{
525	int fd;	620	int fd;
526		621
527	for (fd = anfdmax; fd--; )	622	for (fd = anfdmax; fd--; )
…		…
531	return;	626	return;
532	}	627	}
533	}	628	}
534		629
535	/* usually called after fork if backend needs to re-arm all fds from scratch */	630	/* usually called after fork if backend needs to re-arm all fds from scratch */
536	static void	631	static void noinline
537	fd_rearm_all (EV_P)	632	fd_rearm_all (EV_P)
538	{	633	{
539	int fd;	634	int fd;
540		635
541	/* this should be highly optimised to not do anything but set a flag */
542	for (fd = 0; fd < anfdmax; ++fd)	636	for (fd = 0; fd < anfdmax; ++fd)
543	if (anfds [fd].events)	637	if (anfds [fd].events)
544	{	638	{
545	anfds [fd].events = 0;	639	anfds [fd].events = 0;
546	fd_change (EV_A_ fd);	640	fd_change (EV_A_ fd, EV_IOFDSET | 1);
547	}	641	}
548	}	642	}
549		643
550	/*****************************************************************************/	644	/*****************************************************************************/
551		645
552	static void	646	void inline_speed
553	upheap (WT *heap, int k)	647	upheap (WT *heap, int k)
554	{	648	{
555	WT w = heap [k];	649	WT w = heap [k];
556		650
557	while (k && heap [k >> 1]->at > w->at)	651	while (k)
558	{	652	{
		653	int p = (k - 1) >> 1;
		654
		655	if (heap [p]->at <= w->at)
		656	break;
		657
559	heap [k] = heap [k >> 1];	658	heap [k] = heap [p];
560	((W)heap [k])->active = k + 1;	659	((W)heap [k])->active = k + 1;
561	k >>= 1;	660	k = p;
562	}	661	}
563		662
564	heap [k] = w;	663	heap [k] = w;
565	((W)heap [k])->active = k + 1;	664	((W)heap [k])->active = k + 1;
566
567	}	665	}
568		666
569	static void	667	void inline_speed
570	downheap (WT *heap, int N, int k)	668	downheap (WT *heap, int N, int k)
571	{	669	{
572	WT w = heap [k];	670	WT w = heap [k];
573		671
574	while (k < (N >> 1))	672	for (;;)
575	{	673	{
576	int j = k << 1;	674	int c = (k << 1) + 1;
577		675
578	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	676	if (c >= N)
579	++j;
580
581	if (w->at <= heap [j]->at)
582	break;	677	break;
583		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
584	heap [k] = heap [j];	685	heap [k] = heap [c];
585	((W)heap [k])->active = k + 1;	686	((W)heap [k])->active = k + 1;
		687
586	k = j;	688	k = c;
587	}	689	}
588		690
589	heap [k] = w;	691	heap [k] = w;
590	((W)heap [k])->active = k + 1;	692	((W)heap [k])->active = k + 1;
591	}	693	}
592		694
593	inline void	695	void inline_size
594	adjustheap (WT *heap, int N, int k)	696	adjustheap (WT *heap, int N, int k)
595	{	697	{
596	upheap (heap, k);	698	upheap (heap, k);
597	downheap (heap, N, k);	699	downheap (heap, N, k);
598	}	700	}
…		…
610		712
611	static int sigpipe [2];	713	static int sigpipe [2];
612	static sig_atomic_t volatile gotsig;	714	static sig_atomic_t volatile gotsig;
613	static ev_io sigev;	715	static ev_io sigev;
614		716
615	static void	717	void inline_size
616	signals_init (ANSIG *base, int count)	718	signals_init (ANSIG *base, int count)
617	{	719	{
618	while (count--)	720	while (count--)
619	{	721	{
620	base->head = 0;	722	base->head = 0;
…		…
640	write (sigpipe [1], &signum, 1);	742	write (sigpipe [1], &signum, 1);
641	errno = old_errno;	743	errno = old_errno;
642	}	744	}
643	}	745	}
644		746
645	void	747	void noinline
646	ev_feed_signal_event (EV_P_ int signum)	748	ev_feed_signal_event (EV_P_ int signum)
647	{	749	{
648	WL w;	750	WL w;
649		751
650	#if EV_MULTIPLICITY	752	#if EV_MULTIPLICITY
…		…
673	for (signum = signalmax; signum--; )	775	for (signum = signalmax; signum--; )
674	if (signals [signum].gotsig)	776	if (signals [signum].gotsig)
675	ev_feed_signal_event (EV_A_ signum + 1);	777	ev_feed_signal_event (EV_A_ signum + 1);
676	}	778	}
677		779
678	static void	780	void inline_speed
679	fd_intern (int fd)	781	fd_intern (int fd)
680	{	782	{
681	#ifdef _WIN32	783	#ifdef _WIN32
682	int arg = 1;	784	int arg = 1;
683	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	785	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
685	fcntl (fd, F_SETFD, FD_CLOEXEC);	787	fcntl (fd, F_SETFD, FD_CLOEXEC);
686	fcntl (fd, F_SETFL, O_NONBLOCK);	788	fcntl (fd, F_SETFL, O_NONBLOCK);
687	#endif	789	#endif
688	}	790	}
689		791
690	static void	792	static void noinline
691	siginit (EV_P)	793	siginit (EV_P)
692	{	794	{
693	fd_intern (sigpipe [0]);	795	fd_intern (sigpipe [0]);
694	fd_intern (sigpipe [1]);	796	fd_intern (sigpipe [1]);
695		797
…		…
698	ev_unref (EV_A); /* child watcher should not keep loop alive */	800	ev_unref (EV_A); /* child watcher should not keep loop alive */
699	}	801	}
700		802
701	/*****************************************************************************/	803	/*****************************************************************************/
702		804
703	static ev_child *childs [PID_HASHSIZE];	805	static WL childs [EV_PID_HASHSIZE];
704		806
705	#ifndef _WIN32	807	#ifndef _WIN32
706		808
707	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	}
708		825
709	#ifndef WCONTINUED	826	#ifndef WCONTINUED
710	# define WCONTINUED 0	827	# define WCONTINUED 0
711	#endif	828	#endif
712		829
713	static void	830	static void
714	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
715	{
716	ev_child *w;
717
718	for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
719	if (w->pid == pid || !w->pid)
720	{
721	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
722	w->rpid = pid;
723	w->rstatus = status;
724	ev_feed_event (EV_A_ (W)w, EV_CHILD);
725	}
726	}
727
728	static void
729	childcb (EV_P_ ev_signal *sw, int revents)	831	childcb (EV_P_ ev_signal *sw, int revents)
730	{	832	{
731	int pid, status;	833	int pid, status;
732		834
		835	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
733	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	836	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
734	{	837	if (!WCONTINUED
		838	|| errno != EINVAL
		839	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		840	return;
		841
735	/* 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 */
736	/* 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 */
737	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	844	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
738		845
739	child_reap (EV_A_ sw, pid, pid, status);	846	child_reap (EV_A_ sw, pid, pid, status);
		847	if (EV_PID_HASHSIZE > 1)
740	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 */
741	}
742	}	849	}
743		850
744	#endif	851	#endif
745		852
746	/*****************************************************************************/	853	/*****************************************************************************/
…		…
772	{	879	{
773	return EV_VERSION_MINOR;	880	return EV_VERSION_MINOR;
774	}	881	}
775		882
776	/* return true if we are running with elevated privileges and should ignore env variables */	883	/* return true if we are running with elevated privileges and should ignore env variables */
777	static int	884	int inline_size
778	enable_secure (void)	885	enable_secure (void)
779	{	886	{
780	#ifdef _WIN32	887	#ifdef _WIN32
781	return 0;	888	return 0;
782	#else	889	#else
…		…
829	ev_backend (EV_P)	936	ev_backend (EV_P)
830	{	937	{
831	return backend;	938	return backend;
832	}	939	}
833		940
834	static void	941	unsigned int
		942	ev_loop_count (EV_P)
		943	{
		944	return loop_count;
		945	}
		946
		947	static void noinline
835	loop_init (EV_P_ unsigned int flags)	948	loop_init (EV_P_ unsigned int flags)
836	{	949	{
837	if (!backend)	950	if (!backend)
838	{	951	{
839	#if EV_USE_MONOTONIC	952	#if EV_USE_MONOTONIC
…		…
847	ev_rt_now = ev_time ();	960	ev_rt_now = ev_time ();
848	mn_now = get_clock ();	961	mn_now = get_clock ();
849	now_floor = mn_now;	962	now_floor = mn_now;
850	rtmn_diff = ev_rt_now - mn_now;	963	rtmn_diff = ev_rt_now - mn_now;
851		964
		965	/* pid check not overridable via env */
		966	#ifndef _WIN32
		967	if (flags & EVFLAG_FORKCHECK)
		968	curpid = getpid ();
		969	#endif
		970
852	if (!(flags & EVFLAG_NOENV)	971	if (!(flags & EVFLAG_NOENV)
853	&& !enable_secure ()	972	&& !enable_secure ()
854	&& getenv ("LIBEV_FLAGS"))	973	&& getenv ("LIBEV_FLAGS"))
855	flags = atoi (getenv ("LIBEV_FLAGS"));	974	flags = atoi (getenv ("LIBEV_FLAGS"));
856		975
857	if (!(flags & 0x0000ffffUL))	976	if (!(flags & 0x0000ffffUL))
858	flags |= ev_recommended_backends ();	977	flags |= ev_recommended_backends ();
859		978
860	backend = 0;	979	backend = 0;
		980	backend_fd = -1;
		981	#if EV_USE_INOTIFY
		982	fs_fd = -2;
		983	#endif
		984
861	#if EV_USE_PORT	985	#if EV_USE_PORT
862	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	986	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
863	#endif	987	#endif
864	#if EV_USE_KQUEUE	988	#if EV_USE_KQUEUE
865	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	989	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
877	ev_init (&sigev, sigcb);	1001	ev_init (&sigev, sigcb);
878	ev_set_priority (&sigev, EV_MAXPRI);	1002	ev_set_priority (&sigev, EV_MAXPRI);
879	}	1003	}
880	}	1004	}
881		1005
882	static void	1006	static void noinline
883	loop_destroy (EV_P)	1007	loop_destroy (EV_P)
884	{	1008	{
885	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);
886		1018
887	#if EV_USE_PORT	1019	#if EV_USE_PORT
888	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1020	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
889	#endif	1021	#endif
890	#if EV_USE_KQUEUE	1022	#if EV_USE_KQUEUE
…		…
899	#if EV_USE_SELECT	1031	#if EV_USE_SELECT
900	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1032	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
901	#endif	1033	#endif
902		1034
903	for (i = NUMPRI; i--; )	1035	for (i = NUMPRI; i--; )
		1036	{
904	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;
905		1044
906	/* have to use the microsoft-never-gets-it-right macro */	1045	/* have to use the microsoft-never-gets-it-right macro */
907	array_free (fdchange, EMPTY0);	1046	array_free (fdchange, EMPTY);
908	array_free (timer, EMPTY0);	1047	array_free (timer, EMPTY);
909	#if EV_PERIODICS	1048	#if EV_PERIODIC_ENABLE
910	array_free (periodic, EMPTY0);	1049	array_free (periodic, EMPTY);
911	#endif	1050	#endif
912	array_free (idle, EMPTY0);
913	array_free (prepare, EMPTY0);	1051	array_free (prepare, EMPTY);
914	array_free (check, EMPTY0);	1052	array_free (check, EMPTY);
		1053	array_free (fork, EMPTY);
915		1054
916	backend = 0;	1055	backend = 0;
917	}	1056	}
918		1057
919	static void	1058	void inline_size infy_fork (EV_P);
		1059
		1060	void inline_size
920	loop_fork (EV_P)	1061	loop_fork (EV_P)
921	{	1062	{
922	#if EV_USE_PORT	1063	#if EV_USE_PORT
923	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1064	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
924	#endif	1065	#endif
925	#if EV_USE_KQUEUE	1066	#if EV_USE_KQUEUE
926	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1067	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
927	#endif	1068	#endif
928	#if EV_USE_EPOLL	1069	#if EV_USE_EPOLL
929	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);
930	#endif	1074	#endif
931		1075
932	if (ev_is_active (&sigev))	1076	if (ev_is_active (&sigev))
933	{	1077	{
934	/* default loop */	1078	/* default loop */
…		…
1050	postfork = 1;	1194	postfork = 1;
1051	}	1195	}
1052		1196
1053	/*****************************************************************************/	1197	/*****************************************************************************/
1054		1198
1055	static int	1199	void
1056	any_pending (EV_P)	1200	ev_invoke (EV_P_ void *w, int revents)
1057	{	1201	{
1058	int pri;	1202	EV_CB_INVOKE ((W)w, revents);
1059
1060	for (pri = NUMPRI; pri--; )
1061	if (pendingcnt [pri])
1062	return 1;
1063
1064	return 0;
1065	}	1203	}
1066		1204
1067	inline void	1205	void inline_speed
1068	call_pending (EV_P)	1206	call_pending (EV_P)
1069	{	1207	{
1070	int pri;	1208	int pri;
1071		1209
1072	for (pri = NUMPRI; pri--; )	1210	for (pri = NUMPRI; pri--; )
…		…
1074	{	1212	{
1075	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1213	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1076		1214
1077	if (expect_true (p->w))	1215	if (expect_true (p->w))
1078	{	1216	{
		1217	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1218
1079	p->w->pending = 0;	1219	p->w->pending = 0;
1080	EV_CB_INVOKE (p->w, p->events);	1220	EV_CB_INVOKE (p->w, p->events);
1081	}	1221	}
1082	}	1222	}
1083	}	1223	}
1084		1224
1085	inline void	1225	void inline_size
1086	timers_reify (EV_P)	1226	timers_reify (EV_P)
1087	{	1227	{
1088	while (timercnt && ((WT)timers [0])->at <= mn_now)	1228	while (timercnt && ((WT)timers [0])->at <= mn_now)
1089	{	1229	{
1090	ev_timer *w = timers [0];	1230	ev_timer *w = (ev_timer *)timers [0];
1091		1231
1092	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1232	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1093		1233
1094	/* first reschedule or stop timer */	1234	/* first reschedule or stop timer */
1095	if (w->repeat)	1235	if (w->repeat)
1096	{	1236	{
1097	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.));
1098		1238
1099	((WT)w)->at += w->repeat;	1239	((WT)w)->at += w->repeat;
1100	if (((WT)w)->at < mn_now)	1240	if (((WT)w)->at < mn_now)
1101	((WT)w)->at = mn_now;	1241	((WT)w)->at = mn_now;
1102		1242
1103	downheap ((WT *)timers, timercnt, 0);	1243	downheap (timers, timercnt, 0);
1104	}	1244	}
1105	else	1245	else
1106	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1246	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1107		1247
1108	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1248	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1109	}	1249	}
1110	}	1250	}
1111		1251
1112	#if EV_PERIODICS	1252	#if EV_PERIODIC_ENABLE
1113	inline void	1253	void inline_size
1114	periodics_reify (EV_P)	1254	periodics_reify (EV_P)
1115	{	1255	{
1116	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1256	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1117	{	1257	{
1118	ev_periodic *w = periodics [0];	1258	ev_periodic *w = (ev_periodic *)periodics [0];
1119		1259
1120	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1260	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1121		1261
1122	/* first reschedule or stop timer */	1262	/* first reschedule or stop timer */
1123	if (w->reschedule_cb)	1263	if (w->reschedule_cb)
1124	{	1264	{
1125	((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);
1126	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));
1127	downheap ((WT *)periodics, periodiccnt, 0);	1267	downheap (periodics, periodiccnt, 0);
1128	}	1268	}
1129	else if (w->interval)	1269	else if (w->interval)
1130	{	1270	{
1131	((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;
1132	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));
1133	downheap ((WT *)periodics, periodiccnt, 0);	1274	downheap (periodics, periodiccnt, 0);
1134	}	1275	}
1135	else	1276	else
1136	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1277	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1137		1278
1138	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1279	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1139	}	1280	}
1140	}	1281	}
1141		1282
1142	static void	1283	static void noinline
1143	periodics_reschedule (EV_P)	1284	periodics_reschedule (EV_P)
1144	{	1285	{
1145	int i;	1286	int i;
1146		1287
1147	/* adjust periodics after time jump */	1288	/* adjust periodics after time jump */
1148	for (i = 0; i < periodiccnt; ++i)	1289	for (i = 0; i < periodiccnt; ++i)
1149	{	1290	{
1150	ev_periodic *w = periodics [i];	1291	ev_periodic *w = (ev_periodic *)periodics [i];
1151		1292
1152	if (w->reschedule_cb)	1293	if (w->reschedule_cb)
1153	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1294	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1154	else if (w->interval)	1295	else if (w->interval)
1155	((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;
1156	}	1297	}
1157		1298
1158	/* now rebuild the heap */	1299	/* now rebuild the heap */
1159	for (i = periodiccnt >> 1; i--; )	1300	for (i = periodiccnt >> 1; i--; )
1160	downheap ((WT *)periodics, periodiccnt, i);	1301	downheap (periodics, periodiccnt, i);
1161	}	1302	}
1162	#endif	1303	#endif
1163		1304
1164	inline int	1305	#if EV_IDLE_ENABLE
1165	time_update_monotonic (EV_P)	1306	void inline_size
		1307	idle_reify (EV_P)
1166	{	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
1167	mn_now = get_clock ();	1338	mn_now = get_clock ();
1168		1339
		1340	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1341	/* interpolate in the meantime */
1169	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1342	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1170	{	1343	{
1171	ev_rt_now = rtmn_diff + mn_now;	1344	ev_rt_now = rtmn_diff + mn_now;
1172	return 0;	1345	return;
1173	}	1346	}
1174	else	1347
1175	{
1176	now_floor = mn_now;	1348	now_floor = mn_now;
1177	ev_rt_now = ev_time ();	1349	ev_rt_now = ev_time ();
1178	return 1;
1179	}
1180	}
1181		1350
1182	inline void	1351	/* loop a few times, before making important decisions.
1183	time_update (EV_P)	1352	* on the choice of "4": one iteration isn't enough,
1184	{	1353	* in case we get preempted during the calls to
1185	int i;	1354	* ev_time and get_clock. a second call is almost guaranteed
1186		1355	* to succeed in that case, though. and looping a few more times
1187	#if EV_USE_MONOTONIC	1356	* doesn't hurt either as we only do this on time-jumps or
1188	if (expect_true (have_monotonic))	1357	* in the unlikely event of having been preempted here.
1189	{	1358	*/
1190	if (time_update_monotonic (EV_A))	1359	for (i = 4; --i; )
1191	{	1360	{
1192	ev_tstamp odiff = rtmn_diff;
1193
1194	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1195	{
1196	rtmn_diff = ev_rt_now - mn_now;	1361	rtmn_diff = ev_rt_now - mn_now;
1197		1362
1198	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1363	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1199	return; /* all is well */	1364	return; /* all is well */
1200		1365
1201	ev_rt_now = ev_time ();	1366	ev_rt_now = ev_time ();
1202	mn_now = get_clock ();	1367	mn_now = get_clock ();
1203	now_floor = mn_now;	1368	now_floor = mn_now;
1204	}	1369	}
1205		1370
1206	# if EV_PERIODICS	1371	# if EV_PERIODIC_ENABLE
		1372	periodics_reschedule (EV_A);
		1373	# endif
		1374	/* no timer adjustment, as the monotonic clock doesn't jump */
		1375	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1376	}
		1377	else
		1378	#endif
		1379	{
		1380	ev_rt_now = ev_time ();
		1381
		1382	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1383	{
		1384	#if EV_PERIODIC_ENABLE
1207	periodics_reschedule (EV_A);	1385	periodics_reschedule (EV_A);
1208	# endif	1386	#endif
1209	/* no timer adjustment, as the monotonic clock doesn't jump */
1210	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1211	}
1212	}
1213	else
1214	#endif
1215	{
1216	ev_rt_now = ev_time ();
1217
1218	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1219	{
1220	#if EV_PERIODICS
1221	periodics_reschedule (EV_A);
1222	#endif
1223
1224	/* 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 */
1225	for (i = 0; i < timercnt; ++i)	1388	for (i = 0; i < timercnt; ++i)
1226	((WT)timers [i])->at += ev_rt_now - mn_now;	1389	((WT)timers [i])->at += ev_rt_now - mn_now;
1227	}	1390	}
1228		1391
1229	mn_now = ev_rt_now;	1392	mn_now = ev_rt_now;
…		…
1249	{	1412	{
1250	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1413	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1251	? EVUNLOOP_ONE	1414	? EVUNLOOP_ONE
1252	: EVUNLOOP_CANCEL;	1415	: EVUNLOOP_CANCEL;
1253		1416
1254	while (activecnt)	1417	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1418
		1419	do
1255	{	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
1256	/* queue check watchers (and execute them) */	1440	/* queue prepare watchers (and execute them) */
1257	if (expect_false (preparecnt))	1441	if (expect_false (preparecnt))
1258	{	1442	{
1259	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1443	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1260	call_pending (EV_A);	1444	call_pending (EV_A);
1261	}	1445	}
1262		1446
		1447	if (expect_false (!activecnt))
		1448	break;
		1449
1263	/* we might have forked, so reify kernel state if necessary */	1450	/* we might have forked, so reify kernel state if necessary */
1264	if (expect_false (postfork))	1451	if (expect_false (postfork))
1265	loop_fork (EV_A);	1452	loop_fork (EV_A);
1266		1453
1267	/* update fd-related kernel structures */	1454	/* update fd-related kernel structures */
1268	fd_reify (EV_A);	1455	fd_reify (EV_A);
1269		1456
1270	/* calculate blocking time */	1457	/* calculate blocking time */
1271	{	1458	{
1272	double block;	1459	ev_tstamp block;
1273		1460
1274	if (flags & EVLOOP_NONBLOCK || idlecnt)	1461	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1275	block = 0.; /* do not block at all */	1462	block = 0.; /* do not block at all */
1276	else	1463	else
1277	{	1464	{
1278	/* update time to cancel out callback processing overhead */	1465	/* update time to cancel out callback processing overhead */
1279	#if EV_USE_MONOTONIC
1280	if (expect_true (have_monotonic))
1281	time_update_monotonic (EV_A);	1466	time_update (EV_A_ 1e100);
1282	else
1283	#endif
1284	{
1285	ev_rt_now = ev_time ();
1286	mn_now = ev_rt_now;
1287	}
1288		1467
1289	block = MAX_BLOCKTIME;	1468	block = MAX_BLOCKTIME;
1290		1469
1291	if (timercnt)	1470	if (timercnt)
1292	{	1471	{
1293	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1472	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1294	if (block > to) block = to;	1473	if (block > to) block = to;
1295	}	1474	}
1296		1475
1297	#if EV_PERIODICS	1476	#if EV_PERIODIC_ENABLE
1298	if (periodiccnt)	1477	if (periodiccnt)
1299	{	1478	{
1300	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1479	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1301	if (block > to) block = to;	1480	if (block > to) block = to;
1302	}	1481	}
1303	#endif	1482	#endif
1304		1483
1305	if (expect_false (block < 0.)) block = 0.;	1484	if (expect_false (block < 0.)) block = 0.;
1306	}	1485	}
1307		1486
		1487	++loop_count;
1308	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);
1309	}	1492	}
1310
1311	/* update ev_rt_now, do magic */
1312	time_update (EV_A);
1313		1493
1314	/* queue pending timers and reschedule them */	1494	/* queue pending timers and reschedule them */
1315	timers_reify (EV_A); /* relative timers called last */	1495	timers_reify (EV_A); /* relative timers called last */
1316	#if EV_PERIODICS	1496	#if EV_PERIODIC_ENABLE
1317	periodics_reify (EV_A); /* absolute timers called first */	1497	periodics_reify (EV_A); /* absolute timers called first */
1318	#endif	1498	#endif
1319		1499
		1500	#if EV_IDLE_ENABLE
1320	/* queue idle watchers unless other events are pending */	1501	/* queue idle watchers unless other events are pending */
1321	if (idlecnt && !any_pending (EV_A))	1502	idle_reify (EV_A);
1322	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1503	#endif
1323		1504
1324	/* queue check watchers, to be executed first */	1505	/* queue check watchers, to be executed first */
1325	if (expect_false (checkcnt))	1506	if (expect_false (checkcnt))
1326	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1507	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1327		1508
1328	call_pending (EV_A);	1509	call_pending (EV_A);
1329		1510
1330	if (expect_false (loop_done))
1331	break;
1332	}	1511	}
		1512	while (expect_true (activecnt && !loop_done));
1333		1513
1334	if (loop_done == EVUNLOOP_ONE)	1514	if (loop_done == EVUNLOOP_ONE)
1335	loop_done = EVUNLOOP_CANCEL;	1515	loop_done = EVUNLOOP_CANCEL;
1336	}	1516	}
1337		1517
…		…
1341	loop_done = how;	1521	loop_done = how;
1342	}	1522	}
1343		1523
1344	/*****************************************************************************/	1524	/*****************************************************************************/
1345		1525
1346	inline void	1526	void inline_size
1347	wlist_add (WL *head, WL elem)	1527	wlist_add (WL *head, WL elem)
1348	{	1528	{
1349	elem->next = *head;	1529	elem->next = *head;
1350	*head = elem;	1530	*head = elem;
1351	}	1531	}
1352		1532
1353	inline void	1533	void inline_size
1354	wlist_del (WL *head, WL elem)	1534	wlist_del (WL *head, WL elem)
1355	{	1535	{
1356	while (*head)	1536	while (*head)
1357	{	1537	{
1358	if (*head == elem)	1538	if (*head == elem)
…		…
1363		1543
1364	head = &(*head)->next;	1544	head = &(*head)->next;
1365	}	1545	}
1366	}	1546	}
1367		1547
1368	inline void	1548	void inline_speed
1369	ev_clear_pending (EV_P_ W w)	1549	clear_pending (EV_P_ W w)
1370	{	1550	{
1371	if (w->pending)	1551	if (w->pending)
1372	{	1552	{
1373	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1553	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1374	w->pending = 0;	1554	w->pending = 0;
1375	}	1555	}
1376	}	1556	}
1377		1557
1378	inline void	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
		1584	void inline_speed
1379	ev_start (EV_P_ W w, int active)	1585	ev_start (EV_P_ W w, int active)
1380	{	1586	{
1381	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1587	pri_adjust (EV_A_ w);
1382	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1383
1384	w->active = active;	1588	w->active = active;
1385	ev_ref (EV_A);	1589	ev_ref (EV_A);
1386	}	1590	}
1387		1591
1388	inline void	1592	void inline_size
1389	ev_stop (EV_P_ W w)	1593	ev_stop (EV_P_ W w)
1390	{	1594	{
1391	ev_unref (EV_A);	1595	ev_unref (EV_A);
1392	w->active = 0;	1596	w->active = 0;
1393	}	1597	}
1394		1598
1395	/*****************************************************************************/	1599	/*****************************************************************************/
1396		1600
1397	void	1601	void noinline
1398	ev_io_start (EV_P_ ev_io *w)	1602	ev_io_start (EV_P_ ev_io *w)
1399	{	1603	{
1400	int fd = w->fd;	1604	int fd = w->fd;
1401		1605
1402	if (expect_false (ev_is_active (w)))	1606	if (expect_false (ev_is_active (w)))
…		…
1404		1608
1405	assert (("ev_io_start called with negative fd", fd >= 0));	1609	assert (("ev_io_start called with negative fd", fd >= 0));
1406		1610
1407	ev_start (EV_A_ (W)w, 1);	1611	ev_start (EV_A_ (W)w, 1);
1408	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1612	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1409	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1613	wlist_add (&anfds[fd].head, (WL)w);
1410		1614
1411	fd_change (EV_A_ fd);	1615	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1616	w->events &= ~EV_IOFDSET;
1412	}	1617	}
1413		1618
1414	void	1619	void noinline
1415	ev_io_stop (EV_P_ ev_io *w)	1620	ev_io_stop (EV_P_ ev_io *w)
1416	{	1621	{
1417	ev_clear_pending (EV_A_ (W)w);	1622	clear_pending (EV_A_ (W)w);
1418	if (expect_false (!ev_is_active (w)))	1623	if (expect_false (!ev_is_active (w)))
1419	return;	1624	return;
1420		1625
1421	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));
1422		1627
1423	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1628	wlist_del (&anfds[w->fd].head, (WL)w);
1424	ev_stop (EV_A_ (W)w);	1629	ev_stop (EV_A_ (W)w);
1425		1630
1426	fd_change (EV_A_ w->fd);	1631	fd_change (EV_A_ w->fd, 1);
1427	}	1632	}
1428		1633
1429	void	1634	void noinline
1430	ev_timer_start (EV_P_ ev_timer *w)	1635	ev_timer_start (EV_P_ ev_timer *w)
1431	{	1636	{
1432	if (expect_false (ev_is_active (w)))	1637	if (expect_false (ev_is_active (w)))
1433	return;	1638	return;
1434		1639
1435	((WT)w)->at += mn_now;	1640	((WT)w)->at += mn_now;
1436		1641
1437	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.));
1438		1643
1439	ev_start (EV_A_ (W)w, ++timercnt);	1644	ev_start (EV_A_ (W)w, ++timercnt);
1440	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1645	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1441	timers [timercnt - 1] = w;	1646	timers [timercnt - 1] = (WT)w;
1442	upheap ((WT *)timers, timercnt - 1);	1647	upheap (timers, timercnt - 1);
1443		1648
1444	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1649	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1445	}	1650	}
1446		1651
1447	void	1652	void noinline
1448	ev_timer_stop (EV_P_ ev_timer *w)	1653	ev_timer_stop (EV_P_ ev_timer *w)
1449	{	1654	{
1450	ev_clear_pending (EV_A_ (W)w);	1655	clear_pending (EV_A_ (W)w);
1451	if (expect_false (!ev_is_active (w)))	1656	if (expect_false (!ev_is_active (w)))
1452	return;	1657	return;
1453		1658
1454	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1659	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1455		1660
		1661	{
		1662	int active = ((W)w)->active;
		1663
1456	if (expect_true (((W)w)->active < timercnt--))	1664	if (expect_true (--active < --timercnt))
1457	{	1665	{
1458	timers [((W)w)->active - 1] = timers [timercnt];	1666	timers [active] = timers [timercnt];
1459	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1667	adjustheap (timers, timercnt, active);
1460	}	1668	}
		1669	}
1461		1670
1462	((WT)w)->at -= mn_now;	1671	((WT)w)->at -= mn_now;
1463		1672
1464	ev_stop (EV_A_ (W)w);	1673	ev_stop (EV_A_ (W)w);
1465	}	1674	}
1466		1675
1467	void	1676	void noinline
1468	ev_timer_again (EV_P_ ev_timer *w)	1677	ev_timer_again (EV_P_ ev_timer *w)
1469	{	1678	{
1470	if (ev_is_active (w))	1679	if (ev_is_active (w))
1471	{	1680	{
1472	if (w->repeat)	1681	if (w->repeat)
1473	{	1682	{
1474	((WT)w)->at = mn_now + w->repeat;	1683	((WT)w)->at = mn_now + w->repeat;
1475	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1684	adjustheap (timers, timercnt, ((W)w)->active - 1);
1476	}	1685	}
1477	else	1686	else
1478	ev_timer_stop (EV_A_ w);	1687	ev_timer_stop (EV_A_ w);
1479	}	1688	}
1480	else if (w->repeat)	1689	else if (w->repeat)
…		…
1482	w->at = w->repeat;	1691	w->at = w->repeat;
1483	ev_timer_start (EV_A_ w);	1692	ev_timer_start (EV_A_ w);
1484	}	1693	}
1485	}	1694	}
1486		1695
1487	#if EV_PERIODICS	1696	#if EV_PERIODIC_ENABLE
1488	void	1697	void noinline
1489	ev_periodic_start (EV_P_ ev_periodic *w)	1698	ev_periodic_start (EV_P_ ev_periodic *w)
1490	{	1699	{
1491	if (expect_false (ev_is_active (w)))	1700	if (expect_false (ev_is_active (w)))
1492	return;	1701	return;
1493		1702
…		…
1495	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1704	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1496	else if (w->interval)	1705	else if (w->interval)
1497	{	1706	{
1498	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.));
1499	/* 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 */
1500	((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;
1501	}	1710	}
		1711	else
		1712	((WT)w)->at = w->offset;
1502		1713
1503	ev_start (EV_A_ (W)w, ++periodiccnt);	1714	ev_start (EV_A_ (W)w, ++periodiccnt);
1504	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1715	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1505	periodics [periodiccnt - 1] = w;	1716	periodics [periodiccnt - 1] = (WT)w;
1506	upheap ((WT *)periodics, periodiccnt - 1);	1717	upheap (periodics, periodiccnt - 1);
1507		1718
1508	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1719	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1509	}	1720	}
1510		1721
1511	void	1722	void noinline
1512	ev_periodic_stop (EV_P_ ev_periodic *w)	1723	ev_periodic_stop (EV_P_ ev_periodic *w)
1513	{	1724	{
1514	ev_clear_pending (EV_A_ (W)w);	1725	clear_pending (EV_A_ (W)w);
1515	if (expect_false (!ev_is_active (w)))	1726	if (expect_false (!ev_is_active (w)))
1516	return;	1727	return;
1517		1728
1518	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1729	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1519		1730
		1731	{
		1732	int active = ((W)w)->active;
		1733
1520	if (expect_true (((W)w)->active < periodiccnt--))	1734	if (expect_true (--active < --periodiccnt))
1521	{	1735	{
1522	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1736	periodics [active] = periodics [periodiccnt];
1523	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1737	adjustheap (periodics, periodiccnt, active);
1524	}	1738	}
		1739	}
1525		1740
1526	ev_stop (EV_A_ (W)w);	1741	ev_stop (EV_A_ (W)w);
1527	}	1742	}
1528		1743
1529	void	1744	void noinline
1530	ev_periodic_again (EV_P_ ev_periodic *w)	1745	ev_periodic_again (EV_P_ ev_periodic *w)
1531	{	1746	{
1532	/* TODO: use adjustheap and recalculation */	1747	/* TODO: use adjustheap and recalculation */
1533	ev_periodic_stop (EV_A_ w);	1748	ev_periodic_stop (EV_A_ w);
1534	ev_periodic_start (EV_A_ w);	1749	ev_periodic_start (EV_A_ w);
1535	}	1750	}
1536	#endif	1751	#endif
1537		1752
1538	void
1539	ev_idle_start (EV_P_ ev_idle *w)
1540	{
1541	if (expect_false (ev_is_active (w)))
1542	return;
1543
1544	ev_start (EV_A_ (W)w, ++idlecnt);
1545	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1546	idles [idlecnt - 1] = w;
1547	}
1548
1549	void
1550	ev_idle_stop (EV_P_ ev_idle *w)
1551	{
1552	ev_clear_pending (EV_A_ (W)w);
1553	if (expect_false (!ev_is_active (w)))
1554	return;
1555
1556	idles [((W)w)->active - 1] = idles [--idlecnt];
1557	ev_stop (EV_A_ (W)w);
1558	}
1559
1560	void
1561	ev_prepare_start (EV_P_ ev_prepare *w)
1562	{
1563	if (expect_false (ev_is_active (w)))
1564	return;
1565
1566	ev_start (EV_A_ (W)w, ++preparecnt);
1567	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1568	prepares [preparecnt - 1] = w;
1569	}
1570
1571	void
1572	ev_prepare_stop (EV_P_ ev_prepare *w)
1573	{
1574	ev_clear_pending (EV_A_ (W)w);
1575	if (expect_false (!ev_is_active (w)))
1576	return;
1577
1578	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1579	ev_stop (EV_A_ (W)w);
1580	}
1581
1582	void
1583	ev_check_start (EV_P_ ev_check *w)
1584	{
1585	if (expect_false (ev_is_active (w)))
1586	return;
1587
1588	ev_start (EV_A_ (W)w, ++checkcnt);
1589	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1590	checks [checkcnt - 1] = w;
1591	}
1592
1593	void
1594	ev_check_stop (EV_P_ ev_check *w)
1595	{
1596	ev_clear_pending (EV_A_ (W)w);
1597	if (expect_false (!ev_is_active (w)))
1598	return;
1599
1600	checks [((W)w)->active - 1] = checks [--checkcnt];
1601	ev_stop (EV_A_ (W)w);
1602	}
1603
1604	#ifndef SA_RESTART	1753	#ifndef SA_RESTART
1605	# define SA_RESTART 0	1754	# define SA_RESTART 0
1606	#endif	1755	#endif
1607		1756
1608	void	1757	void noinline
1609	ev_signal_start (EV_P_ ev_signal *w)	1758	ev_signal_start (EV_P_ ev_signal *w)
1610	{	1759	{
1611	#if EV_MULTIPLICITY	1760	#if EV_MULTIPLICITY
1612	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));
1613	#endif	1762	#endif
1614	if (expect_false (ev_is_active (w)))	1763	if (expect_false (ev_is_active (w)))
1615	return;	1764	return;
1616		1765
1617	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));
1618		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
1619	ev_start (EV_A_ (W)w, 1);	1782	ev_start (EV_A_ (W)w, 1);
1620	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1621	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1783	wlist_add (&signals [w->signum - 1].head, (WL)w);
1622		1784
1623	if (!((WL)w)->next)	1785	if (!((WL)w)->next)
1624	{	1786	{
1625	#if _WIN32	1787	#if _WIN32
1626	signal (w->signum, sighandler);	1788	signal (w->signum, sighandler);
…		…
1632	sigaction (w->signum, &sa, 0);	1794	sigaction (w->signum, &sa, 0);
1633	#endif	1795	#endif
1634	}	1796	}
1635	}	1797	}
1636		1798
1637	void	1799	void noinline
1638	ev_signal_stop (EV_P_ ev_signal *w)	1800	ev_signal_stop (EV_P_ ev_signal *w)
1639	{	1801	{
1640	ev_clear_pending (EV_A_ (W)w);	1802	clear_pending (EV_A_ (W)w);
1641	if (expect_false (!ev_is_active (w)))	1803	if (expect_false (!ev_is_active (w)))
1642	return;	1804	return;
1643		1805
1644	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1806	wlist_del (&signals [w->signum - 1].head, (WL)w);
1645	ev_stop (EV_A_ (W)w);	1807	ev_stop (EV_A_ (W)w);
1646		1808
1647	if (!signals [w->signum - 1].head)	1809	if (!signals [w->signum - 1].head)
1648	signal (w->signum, SIG_DFL);	1810	signal (w->signum, SIG_DFL);
1649	}	1811	}
…		…
1656	#endif	1818	#endif
1657	if (expect_false (ev_is_active (w)))	1819	if (expect_false (ev_is_active (w)))
1658	return;	1820	return;
1659		1821
1660	ev_start (EV_A_ (W)w, 1);	1822	ev_start (EV_A_ (W)w, 1);
1661	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1823	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1662	}	1824	}
1663		1825
1664	void	1826	void
1665	ev_child_stop (EV_P_ ev_child *w)	1827	ev_child_stop (EV_P_ ev_child *w)
1666	{	1828	{
1667	ev_clear_pending (EV_A_ (W)w);	1829	clear_pending (EV_A_ (W)w);
1668	if (expect_false (!ev_is_active (w)))	1830	if (expect_false (!ev_is_active (w)))
1669	return;	1831	return;
1670		1832
1671	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1833	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1672	ev_stop (EV_A_ (W)w);	1834	ev_stop (EV_A_ (W)w);
1673	}	1835	}
1674		1836
1675	#if EV_MULTIPLICITY	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
1676	void	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
		2178	ev_stop (EV_A_ (W)w);
		2179	}
		2180
		2181	#if EV_EMBED_ENABLE
		2182	void noinline
1677	ev_embed_sweep (EV_P_ ev_embed *w)	2183	ev_embed_sweep (EV_P_ ev_embed *w)
1678	{	2184	{
1679	ev_loop (w->loop, EVLOOP_NONBLOCK);	2185	ev_loop (w->loop, EVLOOP_NONBLOCK);
1680	}	2186	}
1681		2187
…		…
1702	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2208	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1703	}	2209	}
1704		2210
1705	ev_set_priority (&w->io, ev_priority (w));	2211	ev_set_priority (&w->io, ev_priority (w));
1706	ev_io_start (EV_A_ &w->io);	2212	ev_io_start (EV_A_ &w->io);
		2213
1707	ev_start (EV_A_ (W)w, 1);	2214	ev_start (EV_A_ (W)w, 1);
1708	}	2215	}
1709		2216
1710	void	2217	void
1711	ev_embed_stop (EV_P_ ev_embed *w)	2218	ev_embed_stop (EV_P_ ev_embed *w)
1712	{	2219	{
1713	ev_clear_pending (EV_A_ (W)w);	2220	clear_pending (EV_A_ (W)w);
1714	if (expect_false (!ev_is_active (w)))	2221	if (expect_false (!ev_is_active (w)))
1715	return;	2222	return;
1716		2223
1717	ev_io_stop (EV_A_ &w->io);	2224	ev_io_stop (EV_A_ &w->io);
		2225
		2226	ev_stop (EV_A_ (W)w);
		2227	}
		2228	#endif
		2229
		2230	#if EV_FORK_ENABLE
		2231	void
		2232	ev_fork_start (EV_P_ ev_fork *w)
		2233	{
		2234	if (expect_false (ev_is_active (w)))
		2235	return;
		2236
		2237	ev_start (EV_A_ (W)w, ++forkcnt);
		2238	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2239	forks [forkcnt - 1] = w;
		2240	}
		2241
		2242	void
		2243	ev_fork_stop (EV_P_ ev_fork *w)
		2244	{
		2245	clear_pending (EV_A_ (W)w);
		2246	if (expect_false (!ev_is_active (w)))
		2247	return;
		2248
		2249	{
		2250	int active = ((W)w)->active;
		2251	forks [active - 1] = forks [--forkcnt];
		2252	((W)forks [active - 1])->active = active;
		2253	}
		2254
1718	ev_stop (EV_A_ (W)w);	2255	ev_stop (EV_A_ (W)w);
1719	}	2256	}
1720	#endif	2257	#endif
1721		2258
1722	/*****************************************************************************/	2259	/*****************************************************************************/

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