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Comparing libev/ev.c (file contents):
Revision 1.139 by root, Sun Nov 25 09:24:37 2007 UTC vs.
Revision 1.188 by root, Thu Dec 20 07:12:57 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
		1051	#if EV_FORK_ENABLE
912	array_free (idle, EMPTY0);	1052	array_free (fork, EMPTY);
		1053	#endif
913	array_free (prepare, EMPTY0);	1054	array_free (prepare, EMPTY);
914	array_free (check, EMPTY0);	1055	array_free (check, EMPTY);
915		1056
916	backend = 0;	1057	backend = 0;
917	}	1058	}
918		1059
919	static void	1060	void inline_size infy_fork (EV_P);
		1061
		1062	void inline_size
920	loop_fork (EV_P)	1063	loop_fork (EV_P)
921	{	1064	{
922	#if EV_USE_PORT	1065	#if EV_USE_PORT
923	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1066	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
924	#endif	1067	#endif
925	#if EV_USE_KQUEUE	1068	#if EV_USE_KQUEUE
926	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1069	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
927	#endif	1070	#endif
928	#if EV_USE_EPOLL	1071	#if EV_USE_EPOLL
929	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1072	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1073	#endif
		1074	#if EV_USE_INOTIFY
		1075	infy_fork (EV_A);
930	#endif	1076	#endif
931		1077
932	if (ev_is_active (&sigev))	1078	if (ev_is_active (&sigev))
933	{	1079	{
934	/* default loop */	1080	/* default loop */
…		…
1050	postfork = 1;	1196	postfork = 1;
1051	}	1197	}
1052		1198
1053	/*****************************************************************************/	1199	/*****************************************************************************/
1054		1200
1055	static int	1201	void
1056	any_pending (EV_P)	1202	ev_invoke (EV_P_ void *w, int revents)
1057	{	1203	{
1058	int pri;	1204	EV_CB_INVOKE ((W)w, revents);
1059
1060	for (pri = NUMPRI; pri--; )
1061	if (pendingcnt [pri])
1062	return 1;
1063
1064	return 0;
1065	}	1205	}
1066		1206
1067	inline void	1207	void inline_speed
1068	call_pending (EV_P)	1208	call_pending (EV_P)
1069	{	1209	{
1070	int pri;	1210	int pri;
1071		1211
1072	for (pri = NUMPRI; pri--; )	1212	for (pri = NUMPRI; pri--; )
…		…
1074	{	1214	{
1075	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1215	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1076		1216
1077	if (expect_true (p->w))	1217	if (expect_true (p->w))
1078	{	1218	{
1079	assert (("non-pending watcher on pending list", p->w->pending));	1219	/*assert (("non-pending watcher on pending list", p->w->pending));*/
1080		1220
1081	p->w->pending = 0;	1221	p->w->pending = 0;
1082	EV_CB_INVOKE (p->w, p->events);	1222	EV_CB_INVOKE (p->w, p->events);
1083	}	1223	}
1084	}	1224	}
1085	}	1225	}
1086		1226
1087	inline void	1227	void inline_size
1088	timers_reify (EV_P)	1228	timers_reify (EV_P)
1089	{	1229	{
1090	while (timercnt && ((WT)timers [0])->at <= mn_now)	1230	while (timercnt && ((WT)timers [0])->at <= mn_now)
1091	{	1231	{
1092	ev_timer *w = timers [0];	1232	ev_timer *w = (ev_timer *)timers [0];
1093		1233
1094	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1234	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1095		1235
1096	/* first reschedule or stop timer */	1236	/* first reschedule or stop timer */
1097	if (w->repeat)	1237	if (w->repeat)
1098	{	1238	{
1099	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1239	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1100		1240
1101	((WT)w)->at += w->repeat;	1241	((WT)w)->at += w->repeat;
1102	if (((WT)w)->at < mn_now)	1242	if (((WT)w)->at < mn_now)
1103	((WT)w)->at = mn_now;	1243	((WT)w)->at = mn_now;
1104		1244
1105	downheap ((WT *)timers, timercnt, 0);	1245	downheap (timers, timercnt, 0);
1106	}	1246	}
1107	else	1247	else
1108	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1248	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1109		1249
1110	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1250	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1111	}	1251	}
1112	}	1252	}
1113		1253
1114	#if EV_PERIODICS	1254	#if EV_PERIODIC_ENABLE
1115	inline void	1255	void inline_size
1116	periodics_reify (EV_P)	1256	periodics_reify (EV_P)
1117	{	1257	{
1118	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1258	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1119	{	1259	{
1120	ev_periodic *w = periodics [0];	1260	ev_periodic *w = (ev_periodic *)periodics [0];
1121		1261
1122	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1262	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1123		1263
1124	/* first reschedule or stop timer */	1264	/* first reschedule or stop timer */
1125	if (w->reschedule_cb)	1265	if (w->reschedule_cb)
1126	{	1266	{
1127	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1267	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1128	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1268	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1129	downheap ((WT *)periodics, periodiccnt, 0);	1269	downheap (periodics, periodiccnt, 0);
1130	}	1270	}
1131	else if (w->interval)	1271	else if (w->interval)
1132	{	1272	{
1133	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1273	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1274	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1134	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1275	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1135	downheap ((WT *)periodics, periodiccnt, 0);	1276	downheap (periodics, periodiccnt, 0);
1136	}	1277	}
1137	else	1278	else
1138	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1279	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1139		1280
1140	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1281	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1141	}	1282	}
1142	}	1283	}
1143		1284
1144	static void	1285	static void noinline
1145	periodics_reschedule (EV_P)	1286	periodics_reschedule (EV_P)
1146	{	1287	{
1147	int i;	1288	int i;
1148		1289
1149	/* adjust periodics after time jump */	1290	/* adjust periodics after time jump */
1150	for (i = 0; i < periodiccnt; ++i)	1291	for (i = 0; i < periodiccnt; ++i)
1151	{	1292	{
1152	ev_periodic *w = periodics [i];	1293	ev_periodic *w = (ev_periodic *)periodics [i];
1153		1294
1154	if (w->reschedule_cb)	1295	if (w->reschedule_cb)
1155	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1296	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1156	else if (w->interval)	1297	else if (w->interval)
1157	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1298	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1158	}	1299	}
1159		1300
1160	/* now rebuild the heap */	1301	/* now rebuild the heap */
1161	for (i = periodiccnt >> 1; i--; )	1302	for (i = periodiccnt >> 1; i--; )
1162	downheap ((WT *)periodics, periodiccnt, i);	1303	downheap (periodics, periodiccnt, i);
1163	}	1304	}
1164	#endif	1305	#endif
1165		1306
1166	inline int	1307	#if EV_IDLE_ENABLE
1167	time_update_monotonic (EV_P)	1308	void inline_size
		1309	idle_reify (EV_P)
1168	{	1310	{
		1311	if (expect_false (idleall))
		1312	{
		1313	int pri;
		1314
		1315	for (pri = NUMPRI; pri--; )
		1316	{
		1317	if (pendingcnt [pri])
		1318	break;
		1319
		1320	if (idlecnt [pri])
		1321	{
		1322	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1323	break;
		1324	}
		1325	}
		1326	}
		1327	}
		1328	#endif
		1329
		1330	void inline_speed
		1331	time_update (EV_P_ ev_tstamp max_block)
		1332	{
		1333	int i;
		1334
		1335	#if EV_USE_MONOTONIC
		1336	if (expect_true (have_monotonic))
		1337	{
		1338	ev_tstamp odiff = rtmn_diff;
		1339
1169	mn_now = get_clock ();	1340	mn_now = get_clock ();
1170		1341
		1342	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1343	/* interpolate in the meantime */
1171	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1344	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1172	{	1345	{
1173	ev_rt_now = rtmn_diff + mn_now;	1346	ev_rt_now = rtmn_diff + mn_now;
1174	return 0;	1347	return;
1175	}	1348	}
1176	else	1349
1177	{
1178	now_floor = mn_now;	1350	now_floor = mn_now;
1179	ev_rt_now = ev_time ();	1351	ev_rt_now = ev_time ();
1180	return 1;
1181	}
1182	}
1183		1352
1184	inline void	1353	/* loop a few times, before making important decisions.
1185	time_update (EV_P)	1354	* on the choice of "4": one iteration isn't enough,
1186	{	1355	* in case we get preempted during the calls to
1187	int i;	1356	* ev_time and get_clock. a second call is almost guaranteed
1188		1357	* to succeed in that case, though. and looping a few more times
1189	#if EV_USE_MONOTONIC	1358	* doesn't hurt either as we only do this on time-jumps or
1190	if (expect_true (have_monotonic))	1359	* in the unlikely event of having been preempted here.
1191	{	1360	*/
1192	if (time_update_monotonic (EV_A))	1361	for (i = 4; --i; )
1193	{	1362	{
1194	ev_tstamp odiff = rtmn_diff;
1195
1196	/* loop a few times, before making important decisions.
1197	* on the choice of "4": one iteration isn't enough,
1198	* in case we get preempted during the calls to
1199	* ev_time and get_clock. a second call is almost guarenteed
1200	* to succeed in that case, though. and looping a few more times
1201	* doesn't hurt either as we only do this on time-jumps or
1202	* in the unlikely event of getting preempted here.
1203	*/
1204	for (i = 4; --i; )
1205	{
1206	rtmn_diff = ev_rt_now - mn_now;	1363	rtmn_diff = ev_rt_now - mn_now;
1207		1364
1208	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1365	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1209	return; /* all is well */	1366	return; /* all is well */
1210		1367
1211	ev_rt_now = ev_time ();	1368	ev_rt_now = ev_time ();
1212	mn_now = get_clock ();	1369	mn_now = get_clock ();
1213	now_floor = mn_now;	1370	now_floor = mn_now;
1214	}	1371	}
1215		1372
1216	# if EV_PERIODICS	1373	# if EV_PERIODIC_ENABLE
		1374	periodics_reschedule (EV_A);
		1375	# endif
		1376	/* no timer adjustment, as the monotonic clock doesn't jump */
		1377	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1378	}
		1379	else
		1380	#endif
		1381	{
		1382	ev_rt_now = ev_time ();
		1383
		1384	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1385	{
		1386	#if EV_PERIODIC_ENABLE
1217	periodics_reschedule (EV_A);	1387	periodics_reschedule (EV_A);
1218	# endif	1388	#endif
1219	/* no timer adjustment, as the monotonic clock doesn't jump */
1220	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1221	}
1222	}
1223	else
1224	#endif
1225	{
1226	ev_rt_now = ev_time ();
1227
1228	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1229	{
1230	#if EV_PERIODICS
1231	periodics_reschedule (EV_A);
1232	#endif
1233
1234	/* adjust timers. this is easy, as the offset is the same for all */	1389	/* adjust timers. this is easy, as the offset is the same for all of them */
1235	for (i = 0; i < timercnt; ++i)	1390	for (i = 0; i < timercnt; ++i)
1236	((WT)timers [i])->at += ev_rt_now - mn_now;	1391	((WT)timers [i])->at += ev_rt_now - mn_now;
1237	}	1392	}
1238		1393
1239	mn_now = ev_rt_now;	1394	mn_now = ev_rt_now;
…		…
1259	{	1414	{
1260	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1415	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1261	? EVUNLOOP_ONE	1416	? EVUNLOOP_ONE
1262	: EVUNLOOP_CANCEL;	1417	: EVUNLOOP_CANCEL;
1263		1418
1264	while (activecnt)	1419	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1420
		1421	do
1265	{	1422	{
		1423	#ifndef _WIN32
		1424	if (expect_false (curpid)) /* penalise the forking check even more */
		1425	if (expect_false (getpid () != curpid))
		1426	{
		1427	curpid = getpid ();
		1428	postfork = 1;
		1429	}
		1430	#endif
		1431
		1432	#if EV_FORK_ENABLE
		1433	/* we might have forked, so queue fork handlers */
		1434	if (expect_false (postfork))
		1435	if (forkcnt)
		1436	{
		1437	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1438	call_pending (EV_A);
		1439	}
		1440	#endif
		1441
1266	/* queue check watchers (and execute them) */	1442	/* queue prepare watchers (and execute them) */
1267	if (expect_false (preparecnt))	1443	if (expect_false (preparecnt))
1268	{	1444	{
1269	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1445	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1270	call_pending (EV_A);	1446	call_pending (EV_A);
1271	}	1447	}
1272		1448
		1449	if (expect_false (!activecnt))
		1450	break;
		1451
1273	/* we might have forked, so reify kernel state if necessary */	1452	/* we might have forked, so reify kernel state if necessary */
1274	if (expect_false (postfork))	1453	if (expect_false (postfork))
1275	loop_fork (EV_A);	1454	loop_fork (EV_A);
1276		1455
1277	/* update fd-related kernel structures */	1456	/* update fd-related kernel structures */
1278	fd_reify (EV_A);	1457	fd_reify (EV_A);
1279		1458
1280	/* calculate blocking time */	1459	/* calculate blocking time */
1281	{	1460	{
1282	double block;	1461	ev_tstamp block;
1283		1462
1284	if (flags & EVLOOP_NONBLOCK || idlecnt)	1463	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1285	block = 0.; /* do not block at all */	1464	block = 0.; /* do not block at all */
1286	else	1465	else
1287	{	1466	{
1288	/* update time to cancel out callback processing overhead */	1467	/* update time to cancel out callback processing overhead */
1289	#if EV_USE_MONOTONIC
1290	if (expect_true (have_monotonic))
1291	time_update_monotonic (EV_A);	1468	time_update (EV_A_ 1e100);
1292	else
1293	#endif
1294	{
1295	ev_rt_now = ev_time ();
1296	mn_now = ev_rt_now;
1297	}
1298		1469
1299	block = MAX_BLOCKTIME;	1470	block = MAX_BLOCKTIME;
1300		1471
1301	if (timercnt)	1472	if (timercnt)
1302	{	1473	{
1303	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1474	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1304	if (block > to) block = to;	1475	if (block > to) block = to;
1305	}	1476	}
1306		1477
1307	#if EV_PERIODICS	1478	#if EV_PERIODIC_ENABLE
1308	if (periodiccnt)	1479	if (periodiccnt)
1309	{	1480	{
1310	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1481	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1311	if (block > to) block = to;	1482	if (block > to) block = to;
1312	}	1483	}
1313	#endif	1484	#endif
1314		1485
1315	if (expect_false (block < 0.)) block = 0.;	1486	if (expect_false (block < 0.)) block = 0.;
1316	}	1487	}
1317		1488
		1489	++loop_count;
1318	backend_poll (EV_A_ block);	1490	backend_poll (EV_A_ block);
		1491
		1492	/* update ev_rt_now, do magic */
		1493	time_update (EV_A_ block);
1319	}	1494	}
1320
1321	/* update ev_rt_now, do magic */
1322	time_update (EV_A);
1323		1495
1324	/* queue pending timers and reschedule them */	1496	/* queue pending timers and reschedule them */
1325	timers_reify (EV_A); /* relative timers called last */	1497	timers_reify (EV_A); /* relative timers called last */
1326	#if EV_PERIODICS	1498	#if EV_PERIODIC_ENABLE
1327	periodics_reify (EV_A); /* absolute timers called first */	1499	periodics_reify (EV_A); /* absolute timers called first */
1328	#endif	1500	#endif
1329		1501
		1502	#if EV_IDLE_ENABLE
1330	/* queue idle watchers unless other events are pending */	1503	/* queue idle watchers unless other events are pending */
1331	if (idlecnt && !any_pending (EV_A))	1504	idle_reify (EV_A);
1332	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1505	#endif
1333		1506
1334	/* queue check watchers, to be executed first */	1507	/* queue check watchers, to be executed first */
1335	if (expect_false (checkcnt))	1508	if (expect_false (checkcnt))
1336	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1509	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1337		1510
1338	call_pending (EV_A);	1511	call_pending (EV_A);
1339		1512
1340	if (expect_false (loop_done))
1341	break;
1342	}	1513	}
		1514	while (expect_true (activecnt && !loop_done));
1343		1515
1344	if (loop_done == EVUNLOOP_ONE)	1516	if (loop_done == EVUNLOOP_ONE)
1345	loop_done = EVUNLOOP_CANCEL;	1517	loop_done = EVUNLOOP_CANCEL;
1346	}	1518	}
1347		1519
…		…
1351	loop_done = how;	1523	loop_done = how;
1352	}	1524	}
1353		1525
1354	/*****************************************************************************/	1526	/*****************************************************************************/
1355		1527
1356	inline void	1528	void inline_size
1357	wlist_add (WL *head, WL elem)	1529	wlist_add (WL *head, WL elem)
1358	{	1530	{
1359	elem->next = *head;	1531	elem->next = *head;
1360	*head = elem;	1532	*head = elem;
1361	}	1533	}
1362		1534
1363	inline void	1535	void inline_size
1364	wlist_del (WL *head, WL elem)	1536	wlist_del (WL *head, WL elem)
1365	{	1537	{
1366	while (*head)	1538	while (*head)
1367	{	1539	{
1368	if (*head == elem)	1540	if (*head == elem)
…		…
1373		1545
1374	head = &(*head)->next;	1546	head = &(*head)->next;
1375	}	1547	}
1376	}	1548	}
1377		1549
1378	inline void	1550	void inline_speed
1379	ev_clear_pending (EV_P_ W w)	1551	clear_pending (EV_P_ W w)
1380	{	1552	{
1381	if (w->pending)	1553	if (w->pending)
1382	{	1554	{
1383	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1555	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1384	w->pending = 0;	1556	w->pending = 0;
1385	}	1557	}
1386	}	1558	}
1387		1559
1388	inline void	1560	int
		1561	ev_clear_pending (EV_P_ void *w)
		1562	{
		1563	W w_ = (W)w;
		1564	int pending = w_->pending;
		1565
		1566	if (expect_true (pending))
		1567	{
		1568	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1569	w_->pending = 0;
		1570	p->w = 0;
		1571	return p->events;
		1572	}
		1573	else
		1574	return 0;
		1575	}
		1576
		1577	void inline_size
		1578	pri_adjust (EV_P_ W w)
		1579	{
		1580	int pri = w->priority;
		1581	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1582	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1583	w->priority = pri;
		1584	}
		1585
		1586	void inline_speed
1389	ev_start (EV_P_ W w, int active)	1587	ev_start (EV_P_ W w, int active)
1390	{	1588	{
1391	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1589	pri_adjust (EV_A_ w);
1392	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1393
1394	w->active = active;	1590	w->active = active;
1395	ev_ref (EV_A);	1591	ev_ref (EV_A);
1396	}	1592	}
1397		1593
1398	inline void	1594	void inline_size
1399	ev_stop (EV_P_ W w)	1595	ev_stop (EV_P_ W w)
1400	{	1596	{
1401	ev_unref (EV_A);	1597	ev_unref (EV_A);
1402	w->active = 0;	1598	w->active = 0;
1403	}	1599	}
1404		1600
1405	/*****************************************************************************/	1601	/*****************************************************************************/
1406		1602
1407	void	1603	void noinline
1408	ev_io_start (EV_P_ ev_io *w)	1604	ev_io_start (EV_P_ ev_io *w)
1409	{	1605	{
1410	int fd = w->fd;	1606	int fd = w->fd;
1411		1607
1412	if (expect_false (ev_is_active (w)))	1608	if (expect_false (ev_is_active (w)))
…		…
1414		1610
1415	assert (("ev_io_start called with negative fd", fd >= 0));	1611	assert (("ev_io_start called with negative fd", fd >= 0));
1416		1612
1417	ev_start (EV_A_ (W)w, 1);	1613	ev_start (EV_A_ (W)w, 1);
1418	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1614	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1419	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1615	wlist_add (&anfds[fd].head, (WL)w);
1420		1616
1421	fd_change (EV_A_ fd);	1617	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1618	w->events &= ~EV_IOFDSET;
1422	}	1619	}
1423		1620
1424	void	1621	void noinline
1425	ev_io_stop (EV_P_ ev_io *w)	1622	ev_io_stop (EV_P_ ev_io *w)
1426	{	1623	{
1427	ev_clear_pending (EV_A_ (W)w);	1624	clear_pending (EV_A_ (W)w);
1428	if (expect_false (!ev_is_active (w)))	1625	if (expect_false (!ev_is_active (w)))
1429	return;	1626	return;
1430		1627
1431	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1628	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1432		1629
1433	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1630	wlist_del (&anfds[w->fd].head, (WL)w);
1434	ev_stop (EV_A_ (W)w);	1631	ev_stop (EV_A_ (W)w);
1435		1632
1436	fd_change (EV_A_ w->fd);	1633	fd_change (EV_A_ w->fd, 1);
1437	}	1634	}
1438		1635
1439	void	1636	void noinline
1440	ev_timer_start (EV_P_ ev_timer *w)	1637	ev_timer_start (EV_P_ ev_timer *w)
1441	{	1638	{
1442	if (expect_false (ev_is_active (w)))	1639	if (expect_false (ev_is_active (w)))
1443	return;	1640	return;
1444		1641
1445	((WT)w)->at += mn_now;	1642	((WT)w)->at += mn_now;
1446		1643
1447	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1644	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1448		1645
1449	ev_start (EV_A_ (W)w, ++timercnt);	1646	ev_start (EV_A_ (W)w, ++timercnt);
1450	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1647	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1451	timers [timercnt - 1] = w;	1648	timers [timercnt - 1] = (WT)w;
1452	upheap ((WT *)timers, timercnt - 1);	1649	upheap (timers, timercnt - 1);
1453		1650
1454	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1651	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1455	}	1652	}
1456		1653
1457	void	1654	void noinline
1458	ev_timer_stop (EV_P_ ev_timer *w)	1655	ev_timer_stop (EV_P_ ev_timer *w)
1459	{	1656	{
1460	ev_clear_pending (EV_A_ (W)w);	1657	clear_pending (EV_A_ (W)w);
1461	if (expect_false (!ev_is_active (w)))	1658	if (expect_false (!ev_is_active (w)))
1462	return;	1659	return;
1463		1660
1464	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1661	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1465		1662
		1663	{
		1664	int active = ((W)w)->active;
		1665
1466	if (expect_true (((W)w)->active < timercnt--))	1666	if (expect_true (--active < --timercnt))
1467	{	1667	{
1468	timers [((W)w)->active - 1] = timers [timercnt];	1668	timers [active] = timers [timercnt];
1469	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1669	adjustheap (timers, timercnt, active);
1470	}	1670	}
		1671	}
1471		1672
1472	((WT)w)->at -= mn_now;	1673	((WT)w)->at -= mn_now;
1473		1674
1474	ev_stop (EV_A_ (W)w);	1675	ev_stop (EV_A_ (W)w);
1475	}	1676	}
1476		1677
1477	void	1678	void noinline
1478	ev_timer_again (EV_P_ ev_timer *w)	1679	ev_timer_again (EV_P_ ev_timer *w)
1479	{	1680	{
1480	if (ev_is_active (w))	1681	if (ev_is_active (w))
1481	{	1682	{
1482	if (w->repeat)	1683	if (w->repeat)
1483	{	1684	{
1484	((WT)w)->at = mn_now + w->repeat;	1685	((WT)w)->at = mn_now + w->repeat;
1485	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1686	adjustheap (timers, timercnt, ((W)w)->active - 1);
1486	}	1687	}
1487	else	1688	else
1488	ev_timer_stop (EV_A_ w);	1689	ev_timer_stop (EV_A_ w);
1489	}	1690	}
1490	else if (w->repeat)	1691	else if (w->repeat)
…		…
1492	w->at = w->repeat;	1693	w->at = w->repeat;
1493	ev_timer_start (EV_A_ w);	1694	ev_timer_start (EV_A_ w);
1494	}	1695	}
1495	}	1696	}
1496		1697
1497	#if EV_PERIODICS	1698	#if EV_PERIODIC_ENABLE
1498	void	1699	void noinline
1499	ev_periodic_start (EV_P_ ev_periodic *w)	1700	ev_periodic_start (EV_P_ ev_periodic *w)
1500	{	1701	{
1501	if (expect_false (ev_is_active (w)))	1702	if (expect_false (ev_is_active (w)))
1502	return;	1703	return;
1503		1704
…		…
1505	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1706	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1506	else if (w->interval)	1707	else if (w->interval)
1507	{	1708	{
1508	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1709	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1509	/* this formula differs from the one in periodic_reify because we do not always round up */	1710	/* this formula differs from the one in periodic_reify because we do not always round up */
1510	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1711	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1511	}	1712	}
		1713	else
		1714	((WT)w)->at = w->offset;
1512		1715
1513	ev_start (EV_A_ (W)w, ++periodiccnt);	1716	ev_start (EV_A_ (W)w, ++periodiccnt);
1514	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1717	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1515	periodics [periodiccnt - 1] = w;	1718	periodics [periodiccnt - 1] = (WT)w;
1516	upheap ((WT *)periodics, periodiccnt - 1);	1719	upheap (periodics, periodiccnt - 1);
1517		1720
1518	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1721	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1519	}	1722	}
1520		1723
1521	void	1724	void noinline
1522	ev_periodic_stop (EV_P_ ev_periodic *w)	1725	ev_periodic_stop (EV_P_ ev_periodic *w)
1523	{	1726	{
1524	ev_clear_pending (EV_A_ (W)w);	1727	clear_pending (EV_A_ (W)w);
1525	if (expect_false (!ev_is_active (w)))	1728	if (expect_false (!ev_is_active (w)))
1526	return;	1729	return;
1527		1730
1528	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1731	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1529		1732
		1733	{
		1734	int active = ((W)w)->active;
		1735
1530	if (expect_true (((W)w)->active < periodiccnt--))	1736	if (expect_true (--active < --periodiccnt))
1531	{	1737	{
1532	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1738	periodics [active] = periodics [periodiccnt];
1533	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1739	adjustheap (periodics, periodiccnt, active);
1534	}	1740	}
		1741	}
1535		1742
1536	ev_stop (EV_A_ (W)w);	1743	ev_stop (EV_A_ (W)w);
1537	}	1744	}
1538		1745
1539	void	1746	void noinline
1540	ev_periodic_again (EV_P_ ev_periodic *w)	1747	ev_periodic_again (EV_P_ ev_periodic *w)
1541	{	1748	{
1542	/* TODO: use adjustheap and recalculation */	1749	/* TODO: use adjustheap and recalculation */
1543	ev_periodic_stop (EV_A_ w);	1750	ev_periodic_stop (EV_A_ w);
1544	ev_periodic_start (EV_A_ w);	1751	ev_periodic_start (EV_A_ w);
1545	}	1752	}
1546	#endif	1753	#endif
1547		1754
1548	void
1549	ev_idle_start (EV_P_ ev_idle *w)
1550	{
1551	if (expect_false (ev_is_active (w)))
1552	return;
1553
1554	ev_start (EV_A_ (W)w, ++idlecnt);
1555	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1556	idles [idlecnt - 1] = w;
1557	}
1558
1559	void
1560	ev_idle_stop (EV_P_ ev_idle *w)
1561	{
1562	ev_clear_pending (EV_A_ (W)w);
1563	if (expect_false (!ev_is_active (w)))
1564	return;
1565
1566	{
1567	int active = ((W)w)->active;
1568	idles [active - 1] = idles [--idlecnt];
1569	((W)idles [active - 1])->active = active;
1570	}
1571
1572	ev_stop (EV_A_ (W)w);
1573	}
1574
1575	void
1576	ev_prepare_start (EV_P_ ev_prepare *w)
1577	{
1578	if (expect_false (ev_is_active (w)))
1579	return;
1580
1581	ev_start (EV_A_ (W)w, ++preparecnt);
1582	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1583	prepares [preparecnt - 1] = w;
1584	}
1585
1586	void
1587	ev_prepare_stop (EV_P_ ev_prepare *w)
1588	{
1589	ev_clear_pending (EV_A_ (W)w);
1590	if (expect_false (!ev_is_active (w)))
1591	return;
1592
1593	{
1594	int active = ((W)w)->active;
1595	prepares [active - 1] = prepares [--preparecnt];
1596	((W)prepares [active - 1])->active = active;
1597	}
1598
1599	ev_stop (EV_A_ (W)w);
1600	}
1601
1602	void
1603	ev_check_start (EV_P_ ev_check *w)
1604	{
1605	if (expect_false (ev_is_active (w)))
1606	return;
1607
1608	ev_start (EV_A_ (W)w, ++checkcnt);
1609	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1610	checks [checkcnt - 1] = w;
1611	}
1612
1613	void
1614	ev_check_stop (EV_P_ ev_check *w)
1615	{
1616	ev_clear_pending (EV_A_ (W)w);
1617	if (expect_false (!ev_is_active (w)))
1618	return;
1619
1620	{
1621	int active = ((W)w)->active;
1622	checks [active - 1] = checks [--checkcnt];
1623	((W)checks [active - 1])->active = active;
1624	}
1625
1626	ev_stop (EV_A_ (W)w);
1627	}
1628
1629	#ifndef SA_RESTART	1755	#ifndef SA_RESTART
1630	# define SA_RESTART 0	1756	# define SA_RESTART 0
1631	#endif	1757	#endif
1632		1758
1633	void	1759	void noinline
1634	ev_signal_start (EV_P_ ev_signal *w)	1760	ev_signal_start (EV_P_ ev_signal *w)
1635	{	1761	{
1636	#if EV_MULTIPLICITY	1762	#if EV_MULTIPLICITY
1637	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1763	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1638	#endif	1764	#endif
1639	if (expect_false (ev_is_active (w)))	1765	if (expect_false (ev_is_active (w)))
1640	return;	1766	return;
1641		1767
1642	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1768	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1643		1769
		1770	{
		1771	#ifndef _WIN32
		1772	sigset_t full, prev;
		1773	sigfillset (&full);
		1774	sigprocmask (SIG_SETMASK, &full, &prev);
		1775	#endif
		1776
		1777	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1778
		1779	#ifndef _WIN32
		1780	sigprocmask (SIG_SETMASK, &prev, 0);
		1781	#endif
		1782	}
		1783
1644	ev_start (EV_A_ (W)w, 1);	1784	ev_start (EV_A_ (W)w, 1);
1645	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1646	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1785	wlist_add (&signals [w->signum - 1].head, (WL)w);
1647		1786
1648	if (!((WL)w)->next)	1787	if (!((WL)w)->next)
1649	{	1788	{
1650	#if _WIN32	1789	#if _WIN32
1651	signal (w->signum, sighandler);	1790	signal (w->signum, sighandler);
…		…
1657	sigaction (w->signum, &sa, 0);	1796	sigaction (w->signum, &sa, 0);
1658	#endif	1797	#endif
1659	}	1798	}
1660	}	1799	}
1661		1800
1662	void	1801	void noinline
1663	ev_signal_stop (EV_P_ ev_signal *w)	1802	ev_signal_stop (EV_P_ ev_signal *w)
1664	{	1803	{
1665	ev_clear_pending (EV_A_ (W)w);	1804	clear_pending (EV_A_ (W)w);
1666	if (expect_false (!ev_is_active (w)))	1805	if (expect_false (!ev_is_active (w)))
1667	return;	1806	return;
1668		1807
1669	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1808	wlist_del (&signals [w->signum - 1].head, (WL)w);
1670	ev_stop (EV_A_ (W)w);	1809	ev_stop (EV_A_ (W)w);
1671		1810
1672	if (!signals [w->signum - 1].head)	1811	if (!signals [w->signum - 1].head)
1673	signal (w->signum, SIG_DFL);	1812	signal (w->signum, SIG_DFL);
1674	}	1813	}
…		…
1681	#endif	1820	#endif
1682	if (expect_false (ev_is_active (w)))	1821	if (expect_false (ev_is_active (w)))
1683	return;	1822	return;
1684		1823
1685	ev_start (EV_A_ (W)w, 1);	1824	ev_start (EV_A_ (W)w, 1);
1686	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1825	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1687	}	1826	}
1688		1827
1689	void	1828	void
1690	ev_child_stop (EV_P_ ev_child *w)	1829	ev_child_stop (EV_P_ ev_child *w)
1691	{	1830	{
1692	ev_clear_pending (EV_A_ (W)w);	1831	clear_pending (EV_A_ (W)w);
1693	if (expect_false (!ev_is_active (w)))	1832	if (expect_false (!ev_is_active (w)))
1694	return;	1833	return;
1695		1834
1696	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1835	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1697	ev_stop (EV_A_ (W)w);	1836	ev_stop (EV_A_ (W)w);
1698	}	1837	}
1699		1838
1700	#if EV_MULTIPLICITY	1839	#if EV_STAT_ENABLE
		1840
		1841	# ifdef _WIN32
		1842	# undef lstat
		1843	# define lstat(a,b) _stati64 (a,b)
		1844	# endif
		1845
		1846	#define DEF_STAT_INTERVAL 5.0074891
		1847	#define MIN_STAT_INTERVAL 0.1074891
		1848
		1849	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1850
		1851	#if EV_USE_INOTIFY
		1852	# define EV_INOTIFY_BUFSIZE 8192
		1853
		1854	static void noinline
		1855	infy_add (EV_P_ ev_stat *w)
		1856	{
		1857	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);
		1858
		1859	if (w->wd < 0)
		1860	{
		1861	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1862
		1863	/* monitor some parent directory for speedup hints */
		1864	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1865	{
		1866	char path [4096];
		1867	strcpy (path, w->path);
		1868
		1869	do
		1870	{
		1871	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1872	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1873
		1874	char *pend = strrchr (path, '/');
		1875
		1876	if (!pend)
		1877	break; /* whoops, no '/', complain to your admin */
		1878
		1879	*pend = 0;
		1880	w->wd = inotify_add_watch (fs_fd, path, mask);
		1881	}
		1882	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1883	}
		1884	}
		1885	else
		1886	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1887
		1888	if (w->wd >= 0)
		1889	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1890	}
		1891
		1892	static void noinline
		1893	infy_del (EV_P_ ev_stat *w)
		1894	{
		1895	int slot;
		1896	int wd = w->wd;
		1897
		1898	if (wd < 0)
		1899	return;
		1900
		1901	w->wd = -2;
		1902	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1903	wlist_del (&fs_hash [slot].head, (WL)w);
		1904
		1905	/* remove this watcher, if others are watching it, they will rearm */
		1906	inotify_rm_watch (fs_fd, wd);
		1907	}
		1908
		1909	static void noinline
		1910	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1911	{
		1912	if (slot < 0)
		1913	/* overflow, need to check for all hahs slots */
		1914	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1915	infy_wd (EV_A_ slot, wd, ev);
		1916	else
		1917	{
		1918	WL w_;
		1919
		1920	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1921	{
		1922	ev_stat *w = (ev_stat *)w_;
		1923	w_ = w_->next; /* lets us remove this watcher and all before it */
		1924
		1925	if (w->wd == wd || wd == -1)
		1926	{
		1927	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1928	{
		1929	w->wd = -1;
		1930	infy_add (EV_A_ w); /* re-add, no matter what */
		1931	}
		1932
		1933	stat_timer_cb (EV_A_ &w->timer, 0);
		1934	}
		1935	}
		1936	}
		1937	}
		1938
		1939	static void
		1940	infy_cb (EV_P_ ev_io *w, int revents)
		1941	{
		1942	char buf [EV_INOTIFY_BUFSIZE];
		1943	struct inotify_event *ev = (struct inotify_event *)buf;
		1944	int ofs;
		1945	int len = read (fs_fd, buf, sizeof (buf));
		1946
		1947	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1948	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1949	}
		1950
		1951	void inline_size
		1952	infy_init (EV_P)
		1953	{
		1954	if (fs_fd != -2)
		1955	return;
		1956
		1957	fs_fd = inotify_init ();
		1958
		1959	if (fs_fd >= 0)
		1960	{
		1961	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1962	ev_set_priority (&fs_w, EV_MAXPRI);
		1963	ev_io_start (EV_A_ &fs_w);
		1964	}
		1965	}
		1966
		1967	void inline_size
		1968	infy_fork (EV_P)
		1969	{
		1970	int slot;
		1971
		1972	if (fs_fd < 0)
		1973	return;
		1974
		1975	close (fs_fd);
		1976	fs_fd = inotify_init ();
		1977
		1978	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1979	{
		1980	WL w_ = fs_hash [slot].head;
		1981	fs_hash [slot].head = 0;
		1982
		1983	while (w_)
		1984	{
		1985	ev_stat *w = (ev_stat *)w_;
		1986	w_ = w_->next; /* lets us add this watcher */
		1987
		1988	w->wd = -1;
		1989
		1990	if (fs_fd >= 0)
		1991	infy_add (EV_A_ w); /* re-add, no matter what */
		1992	else
		1993	ev_timer_start (EV_A_ &w->timer);
		1994	}
		1995
		1996	}
		1997	}
		1998
		1999	#endif
		2000
1701	void	2001	void
		2002	ev_stat_stat (EV_P_ ev_stat *w)
		2003	{
		2004	if (lstat (w->path, &w->attr) < 0)
		2005	w->attr.st_nlink = 0;
		2006	else if (!w->attr.st_nlink)
		2007	w->attr.st_nlink = 1;
		2008	}
		2009
		2010	static void noinline
		2011	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2012	{
		2013	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2014
		2015	/* we copy this here each the time so that */
		2016	/* prev has the old value when the callback gets invoked */
		2017	w->prev = w->attr;
		2018	ev_stat_stat (EV_A_ w);
		2019
		2020	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2021	if (
		2022	w->prev.st_dev != w->attr.st_dev
		2023	|| w->prev.st_ino != w->attr.st_ino
		2024	|| w->prev.st_mode != w->attr.st_mode
		2025	|| w->prev.st_nlink != w->attr.st_nlink
		2026	|| w->prev.st_uid != w->attr.st_uid
		2027	|| w->prev.st_gid != w->attr.st_gid
		2028	|| w->prev.st_rdev != w->attr.st_rdev
		2029	|| w->prev.st_size != w->attr.st_size
		2030	|| w->prev.st_atime != w->attr.st_atime
		2031	|| w->prev.st_mtime != w->attr.st_mtime
		2032	|| w->prev.st_ctime != w->attr.st_ctime
		2033	) {
		2034	#if EV_USE_INOTIFY
		2035	infy_del (EV_A_ w);
		2036	infy_add (EV_A_ w);
		2037	ev_stat_stat (EV_A_ w); /* avoid race... */
		2038	#endif
		2039
		2040	ev_feed_event (EV_A_ w, EV_STAT);
		2041	}
		2042	}
		2043
		2044	void
		2045	ev_stat_start (EV_P_ ev_stat *w)
		2046	{
		2047	if (expect_false (ev_is_active (w)))
		2048	return;
		2049
		2050	/* since we use memcmp, we need to clear any padding data etc. */
		2051	memset (&w->prev, 0, sizeof (ev_statdata));
		2052	memset (&w->attr, 0, sizeof (ev_statdata));
		2053
		2054	ev_stat_stat (EV_A_ w);
		2055
		2056	if (w->interval < MIN_STAT_INTERVAL)
		2057	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2058
		2059	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2060	ev_set_priority (&w->timer, ev_priority (w));
		2061
		2062	#if EV_USE_INOTIFY
		2063	infy_init (EV_A);
		2064
		2065	if (fs_fd >= 0)
		2066	infy_add (EV_A_ w);
		2067	else
		2068	#endif
		2069	ev_timer_start (EV_A_ &w->timer);
		2070
		2071	ev_start (EV_A_ (W)w, 1);
		2072	}
		2073
		2074	void
		2075	ev_stat_stop (EV_P_ ev_stat *w)
		2076	{
		2077	clear_pending (EV_A_ (W)w);
		2078	if (expect_false (!ev_is_active (w)))
		2079	return;
		2080
		2081	#if EV_USE_INOTIFY
		2082	infy_del (EV_A_ w);
		2083	#endif
		2084	ev_timer_stop (EV_A_ &w->timer);
		2085
		2086	ev_stop (EV_A_ (W)w);
		2087	}
		2088	#endif
		2089
		2090	#if EV_IDLE_ENABLE
		2091	void
		2092	ev_idle_start (EV_P_ ev_idle *w)
		2093	{
		2094	if (expect_false (ev_is_active (w)))
		2095	return;
		2096
		2097	pri_adjust (EV_A_ (W)w);
		2098
		2099	{
		2100	int active = ++idlecnt [ABSPRI (w)];
		2101
		2102	++idleall;
		2103	ev_start (EV_A_ (W)w, active);
		2104
		2105	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2106	idles [ABSPRI (w)][active - 1] = w;
		2107	}
		2108	}
		2109
		2110	void
		2111	ev_idle_stop (EV_P_ ev_idle *w)
		2112	{
		2113	clear_pending (EV_A_ (W)w);
		2114	if (expect_false (!ev_is_active (w)))
		2115	return;
		2116
		2117	{
		2118	int active = ((W)w)->active;
		2119
		2120	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2121	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2122
		2123	ev_stop (EV_A_ (W)w);
		2124	--idleall;
		2125	}
		2126	}
		2127	#endif
		2128
		2129	void
		2130	ev_prepare_start (EV_P_ ev_prepare *w)
		2131	{
		2132	if (expect_false (ev_is_active (w)))
		2133	return;
		2134
		2135	ev_start (EV_A_ (W)w, ++preparecnt);
		2136	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2137	prepares [preparecnt - 1] = w;
		2138	}
		2139
		2140	void
		2141	ev_prepare_stop (EV_P_ ev_prepare *w)
		2142	{
		2143	clear_pending (EV_A_ (W)w);
		2144	if (expect_false (!ev_is_active (w)))
		2145	return;
		2146
		2147	{
		2148	int active = ((W)w)->active;
		2149	prepares [active - 1] = prepares [--preparecnt];
		2150	((W)prepares [active - 1])->active = active;
		2151	}
		2152
		2153	ev_stop (EV_A_ (W)w);
		2154	}
		2155
		2156	void
		2157	ev_check_start (EV_P_ ev_check *w)
		2158	{
		2159	if (expect_false (ev_is_active (w)))
		2160	return;
		2161
		2162	ev_start (EV_A_ (W)w, ++checkcnt);
		2163	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2164	checks [checkcnt - 1] = w;
		2165	}
		2166
		2167	void
		2168	ev_check_stop (EV_P_ ev_check *w)
		2169	{
		2170	clear_pending (EV_A_ (W)w);
		2171	if (expect_false (!ev_is_active (w)))
		2172	return;
		2173
		2174	{
		2175	int active = ((W)w)->active;
		2176	checks [active - 1] = checks [--checkcnt];
		2177	((W)checks [active - 1])->active = active;
		2178	}
		2179
		2180	ev_stop (EV_A_ (W)w);
		2181	}
		2182
		2183	#if EV_EMBED_ENABLE
		2184	void noinline
1702	ev_embed_sweep (EV_P_ ev_embed *w)	2185	ev_embed_sweep (EV_P_ ev_embed *w)
1703	{	2186	{
1704	ev_loop (w->loop, EVLOOP_NONBLOCK);	2187	ev_loop (w->other, EVLOOP_NONBLOCK);
1705	}	2188	}
1706		2189
1707	static void	2190	static void
1708	embed_cb (EV_P_ ev_io *io, int revents)	2191	embed_cb (EV_P_ ev_io *io, int revents)
1709	{	2192	{
…		…
1720	{	2203	{
1721	if (expect_false (ev_is_active (w)))	2204	if (expect_false (ev_is_active (w)))
1722	return;	2205	return;
1723		2206
1724	{	2207	{
1725	struct ev_loop *loop = w->loop;	2208	struct ev_loop *loop = w->other;
1726	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2209	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1727	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2210	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1728	}	2211	}
1729		2212
1730	ev_set_priority (&w->io, ev_priority (w));	2213	ev_set_priority (&w->io, ev_priority (w));
1731	ev_io_start (EV_A_ &w->io);	2214	ev_io_start (EV_A_ &w->io);
		2215
1732	ev_start (EV_A_ (W)w, 1);	2216	ev_start (EV_A_ (W)w, 1);
1733	}	2217	}
1734		2218
1735	void	2219	void
1736	ev_embed_stop (EV_P_ ev_embed *w)	2220	ev_embed_stop (EV_P_ ev_embed *w)
1737	{	2221	{
1738	ev_clear_pending (EV_A_ (W)w);	2222	clear_pending (EV_A_ (W)w);
1739	if (expect_false (!ev_is_active (w)))	2223	if (expect_false (!ev_is_active (w)))
1740	return;	2224	return;
1741		2225
1742	ev_io_stop (EV_A_ &w->io);	2226	ev_io_stop (EV_A_ &w->io);
		2227
		2228	ev_stop (EV_A_ (W)w);
		2229	}
		2230	#endif
		2231
		2232	#if EV_FORK_ENABLE
		2233	void
		2234	ev_fork_start (EV_P_ ev_fork *w)
		2235	{
		2236	if (expect_false (ev_is_active (w)))
		2237	return;
		2238
		2239	ev_start (EV_A_ (W)w, ++forkcnt);
		2240	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2241	forks [forkcnt - 1] = w;
		2242	}
		2243
		2244	void
		2245	ev_fork_stop (EV_P_ ev_fork *w)
		2246	{
		2247	clear_pending (EV_A_ (W)w);
		2248	if (expect_false (!ev_is_active (w)))
		2249	return;
		2250
		2251	{
		2252	int active = ((W)w)->active;
		2253	forks [active - 1] = forks [--forkcnt];
		2254	((W)forks [active - 1])->active = active;
		2255	}
		2256
1743	ev_stop (EV_A_ (W)w);	2257	ev_stop (EV_A_ (W)w);
1744	}	2258	}
1745	#endif	2259	#endif
1746		2260
1747	/*****************************************************************************/	2261	/*****************************************************************************/
…		…
1806	ev_timer_set (&once->to, timeout, 0.);	2320	ev_timer_set (&once->to, timeout, 0.);
1807	ev_timer_start (EV_A_ &once->to);	2321	ev_timer_start (EV_A_ &once->to);
1808	}	2322	}
1809	}	2323	}
1810		2324
		2325	#if EV_MULTIPLICITY
		2326	#include "ev_wrap.h"
		2327	#endif
		2328
1811	#ifdef __cplusplus	2329	#ifdef __cplusplus
1812	}	2330	}
1813	#endif	2331	#endif
1814		2332

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