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Comparing libev/ev.c (file contents):
Revision 1.134 by root, Fri Nov 23 19:13:33 2007 UTC vs.
Revision 1.185 by root, Fri Dec 14 18:22:30 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 struct ev_watcher *W;	263	typedef ev_watcher *W;
208	typedef struct ev_watcher_list *WL;	264	typedef ev_watcher_list *WL;
209	typedef struct ev_watcher_time *WT;	265	typedef ev_watcher_time *WT;
210		266
211	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	267	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
212		268
213	#ifdef _WIN32	269	#ifdef _WIN32
214	# include "ev_win32.c"	270	# include "ev_win32.c"
…		…
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	if (expect_false (!w_->cb))
403	return;
404
405	w_->pending = ++pendingcnt [ABSPRI (w_)];
406	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
407	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
408	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
409	}
410
411	static void
412	queue_events (EV_P_ W *events, int eventcnt, int type)
413	{
414	int i;
415
416	for (i = 0; i < eventcnt; ++i)
417	ev_feed_event (EV_A_ events [i], type);
418	}
419
420	inline void
421	fd_event (EV_P_ int fd, int revents)	507	fd_event (EV_P_ int fd, int revents)
422	{	508	{
423	ANFD *anfd = anfds + fd;	509	ANFD *anfd = anfds + fd;
424	struct ev_io *w;	510	ev_io *w;
425		511
426	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	512	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
427	{	513	{
428	int ev = w->events & revents;	514	int ev = w->events & revents;
429		515
430	if (ev)	516	if (ev)
431	ev_feed_event (EV_A_ (W)w, ev);	517	ev_feed_event (EV_A_ (W)w, ev);
…		…
433	}	519	}
434		520
435	void	521	void
436	ev_feed_fd_event (EV_P_ int fd, int revents)	522	ev_feed_fd_event (EV_P_ int fd, int revents)
437	{	523	{
		524	if (fd >= 0 && fd < anfdmax)
438	fd_event (EV_A_ fd, revents);	525	fd_event (EV_A_ fd, revents);
439	}	526	}
440		527
441	/*****************************************************************************/	528	void inline_size
442
443	inline void
444	fd_reify (EV_P)	529	fd_reify (EV_P)
445	{	530	{
446	int i;	531	int i;
447		532
448	for (i = 0; i < fdchangecnt; ++i)	533	for (i = 0; i < fdchangecnt; ++i)
449	{	534	{
450	int fd = fdchanges [i];	535	int fd = fdchanges [i];
451	ANFD *anfd = anfds + fd;	536	ANFD *anfd = anfds + fd;
452	struct ev_io *w;	537	ev_io *w;
453		538
454	int events = 0;	539	unsigned char events = 0;
455		540
456	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	541	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
457	events |= w->events;	542	events |= (unsigned char)w->events;
458		543
459	#if EV_SELECT_IS_WINSOCKET	544	#if EV_SELECT_IS_WINSOCKET
460	if (events)	545	if (events)
461	{	546	{
462	unsigned long argp;	547	unsigned long argp;
463	anfd->handle = _get_osfhandle (fd);	548	anfd->handle = _get_osfhandle (fd);
464	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));
465	}	550	}
466	#endif	551	#endif
467		552
		553	{
		554	unsigned char o_events = anfd->events;
		555	unsigned char o_reify = anfd->reify;
		556
468	anfd->reify = 0;	557	anfd->reify = 0;
469
470	backend_modify (EV_A_ fd, anfd->events, events);
471	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	}
472	}	563	}
473		564
474	fdchangecnt = 0;	565	fdchangecnt = 0;
475	}	566	}
476		567
477	static void	568	void inline_size
478	fd_change (EV_P_ int fd)	569	fd_change (EV_P_ int fd, int flags)
479	{	570	{
480	if (expect_false (anfds [fd].reify))	571	unsigned char reify = anfds [fd].reify;
481	return;
482
483	anfds [fd].reify = 1;	572	anfds [fd].reify |= flags;
484		573
		574	if (expect_true (!reify))
		575	{
485	++fdchangecnt;	576	++fdchangecnt;
486	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	577	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
487	fdchanges [fdchangecnt - 1] = fd;	578	fdchanges [fdchangecnt - 1] = fd;
		579	}
488	}	580	}
489		581
490	static void	582	void inline_speed
491	fd_kill (EV_P_ int fd)	583	fd_kill (EV_P_ int fd)
492	{	584	{
493	struct ev_io *w;	585	ev_io *w;
494		586
495	while ((w = (struct ev_io *)anfds [fd].head))	587	while ((w = (ev_io *)anfds [fd].head))
496	{	588	{
497	ev_io_stop (EV_A_ w);	589	ev_io_stop (EV_A_ w);
498	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);
499	}	591	}
500	}	592	}
501		593
502	inline int	594	int inline_size
503	fd_valid (int fd)	595	fd_valid (int fd)
504	{	596	{
505	#ifdef _WIN32	597	#ifdef _WIN32
506	return _get_osfhandle (fd) != -1;	598	return _get_osfhandle (fd) != -1;
507	#else	599	#else
508	return fcntl (fd, F_GETFD) != -1;	600	return fcntl (fd, F_GETFD) != -1;
509	#endif	601	#endif
510	}	602	}
511		603
512	/* called on EBADF to verify fds */	604	/* called on EBADF to verify fds */
513	static void	605	static void noinline
514	fd_ebadf (EV_P)	606	fd_ebadf (EV_P)
515	{	607	{
516	int fd;	608	int fd;
517		609
518	for (fd = 0; fd < anfdmax; ++fd)	610	for (fd = 0; fd < anfdmax; ++fd)
…		…
520	if (!fd_valid (fd) == -1 && errno == EBADF)	612	if (!fd_valid (fd) == -1 && errno == EBADF)
521	fd_kill (EV_A_ fd);	613	fd_kill (EV_A_ fd);
522	}	614	}
523		615
524	/* 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 */
525	static void	617	static void noinline
526	fd_enomem (EV_P)	618	fd_enomem (EV_P)
527	{	619	{
528	int fd;	620	int fd;
529		621
530	for (fd = anfdmax; fd--; )	622	for (fd = anfdmax; fd--; )
…		…
534	return;	626	return;
535	}	627	}
536	}	628	}
537		629
538	/* 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 */
539	static void	631	static void noinline
540	fd_rearm_all (EV_P)	632	fd_rearm_all (EV_P)
541	{	633	{
542	int fd;	634	int fd;
543		635
544	/* this should be highly optimised to not do anything but set a flag */
545	for (fd = 0; fd < anfdmax; ++fd)	636	for (fd = 0; fd < anfdmax; ++fd)
546	if (anfds [fd].events)	637	if (anfds [fd].events)
547	{	638	{
548	anfds [fd].events = 0;	639	anfds [fd].events = 0;
549	fd_change (EV_A_ fd);	640	fd_change (EV_A_ fd, EV_IOFDSET | 1);
550	}	641	}
551	}	642	}
552		643
553	/*****************************************************************************/	644	/*****************************************************************************/
554		645
555	static void	646	void inline_speed
556	upheap (WT *heap, int k)	647	upheap (WT *heap, int k)
557	{	648	{
558	WT w = heap [k];	649	WT w = heap [k];
559		650
560	while (k && heap [k >> 1]->at > w->at)	651	while (k)
561	{	652	{
		653	int p = (k - 1) >> 1;
		654
		655	if (heap [p]->at <= w->at)
		656	break;
		657
562	heap [k] = heap [k >> 1];	658	heap [k] = heap [p];
563	((W)heap [k])->active = k + 1;	659	((W)heap [k])->active = k + 1;
564	k >>= 1;	660	k = p;
565	}	661	}
566		662
567	heap [k] = w;	663	heap [k] = w;
568	((W)heap [k])->active = k + 1;	664	((W)heap [k])->active = k + 1;
569
570	}	665	}
571		666
572	static void	667	void inline_speed
573	downheap (WT *heap, int N, int k)	668	downheap (WT *heap, int N, int k)
574	{	669	{
575	WT w = heap [k];	670	WT w = heap [k];
576		671
577	while (k < (N >> 1))	672	for (;;)
578	{	673	{
579	int j = k << 1;	674	int c = (k << 1) + 1;
580		675
581	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	676	if (c >= N)
582	++j;
583
584	if (w->at <= heap [j]->at)
585	break;	677	break;
586		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
587	heap [k] = heap [j];	685	heap [k] = heap [c];
588	((W)heap [k])->active = k + 1;	686	((W)heap [k])->active = k + 1;
		687
589	k = j;	688	k = c;
590	}	689	}
591		690
592	heap [k] = w;	691	heap [k] = w;
593	((W)heap [k])->active = k + 1;	692	((W)heap [k])->active = k + 1;
594	}	693	}
595		694
596	inline void	695	void inline_size
597	adjustheap (WT *heap, int N, int k)	696	adjustheap (WT *heap, int N, int k)
598	{	697	{
599	upheap (heap, k);	698	upheap (heap, k);
600	downheap (heap, N, k);	699	downheap (heap, N, k);
601	}	700	}
…		…
611	static ANSIG *signals;	710	static ANSIG *signals;
612	static int signalmax;	711	static int signalmax;
613		712
614	static int sigpipe [2];	713	static int sigpipe [2];
615	static sig_atomic_t volatile gotsig;	714	static sig_atomic_t volatile gotsig;
616	static struct ev_io sigev;	715	static ev_io sigev;
617		716
618	static void	717	void inline_size
619	signals_init (ANSIG *base, int count)	718	signals_init (ANSIG *base, int count)
620	{	719	{
621	while (count--)	720	while (count--)
622	{	721	{
623	base->head = 0;	722	base->head = 0;
…		…
643	write (sigpipe [1], &signum, 1);	742	write (sigpipe [1], &signum, 1);
644	errno = old_errno;	743	errno = old_errno;
645	}	744	}
646	}	745	}
647		746
648	void	747	void noinline
649	ev_feed_signal_event (EV_P_ int signum)	748	ev_feed_signal_event (EV_P_ int signum)
650	{	749	{
651	WL w;	750	WL w;
652		751
653	#if EV_MULTIPLICITY	752	#if EV_MULTIPLICITY
…		…
664	for (w = signals [signum].head; w; w = w->next)	763	for (w = signals [signum].head; w; w = w->next)
665	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	764	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
666	}	765	}
667		766
668	static void	767	static void
669	sigcb (EV_P_ struct ev_io *iow, int revents)	768	sigcb (EV_P_ ev_io *iow, int revents)
670	{	769	{
671	int signum;	770	int signum;
672		771
673	read (sigpipe [0], &revents, 1);	772	read (sigpipe [0], &revents, 1);
674	gotsig = 0;	773	gotsig = 0;
…		…
676	for (signum = signalmax; signum--; )	775	for (signum = signalmax; signum--; )
677	if (signals [signum].gotsig)	776	if (signals [signum].gotsig)
678	ev_feed_signal_event (EV_A_ signum + 1);	777	ev_feed_signal_event (EV_A_ signum + 1);
679	}	778	}
680		779
681	static void	780	void inline_speed
682	fd_intern (int fd)	781	fd_intern (int fd)
683	{	782	{
684	#ifdef _WIN32	783	#ifdef _WIN32
685	int arg = 1;	784	int arg = 1;
686	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	785	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
688	fcntl (fd, F_SETFD, FD_CLOEXEC);	787	fcntl (fd, F_SETFD, FD_CLOEXEC);
689	fcntl (fd, F_SETFL, O_NONBLOCK);	788	fcntl (fd, F_SETFL, O_NONBLOCK);
690	#endif	789	#endif
691	}	790	}
692		791
693	static void	792	static void noinline
694	siginit (EV_P)	793	siginit (EV_P)
695	{	794	{
696	fd_intern (sigpipe [0]);	795	fd_intern (sigpipe [0]);
697	fd_intern (sigpipe [1]);	796	fd_intern (sigpipe [1]);
698		797
…		…
701	ev_unref (EV_A); /* child watcher should not keep loop alive */	800	ev_unref (EV_A); /* child watcher should not keep loop alive */
702	}	801	}
703		802
704	/*****************************************************************************/	803	/*****************************************************************************/
705		804
706	static struct ev_child *childs [PID_HASHSIZE];	805	static WL childs [EV_PID_HASHSIZE];
707		806
708	#ifndef _WIN32	807	#ifndef _WIN32
709		808
710	static struct 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	}
711		825
712	#ifndef WCONTINUED	826	#ifndef WCONTINUED
713	# define WCONTINUED 0	827	# define WCONTINUED 0
714	#endif	828	#endif
715		829
716	static void	830	static void
717	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
718	{
719	struct ev_child *w;
720
721	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
722	if (w->pid == pid || !w->pid)
723	{
724	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
725	w->rpid = pid;
726	w->rstatus = status;
727	ev_feed_event (EV_A_ (W)w, EV_CHILD);
728	}
729	}
730
731	static void
732	childcb (EV_P_ struct ev_signal *sw, int revents)	831	childcb (EV_P_ ev_signal *sw, int revents)
733	{	832	{
734	int pid, status;	833	int pid, status;
735		834
		835	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
736	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	836	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
737	{	837	if (!WCONTINUED
		838	|| errno != EINVAL
		839	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		840	return;
		841
738	/* 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 */
739	/* 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 */
740	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	844	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
741		845
742	child_reap (EV_A_ sw, pid, pid, status);	846	child_reap (EV_A_ sw, pid, pid, status);
		847	if (EV_PID_HASHSIZE > 1)
743	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 */
744	}
745	}	849	}
746		850
747	#endif	851	#endif
748		852
749	/*****************************************************************************/	853	/*****************************************************************************/
…		…
775	{	879	{
776	return EV_VERSION_MINOR;	880	return EV_VERSION_MINOR;
777	}	881	}
778		882
779	/* 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 */
780	static int	884	int inline_size
781	enable_secure (void)	885	enable_secure (void)
782	{	886	{
783	#ifdef _WIN32	887	#ifdef _WIN32
784	return 0;	888	return 0;
785	#else	889	#else
…		…
832	ev_backend (EV_P)	936	ev_backend (EV_P)
833	{	937	{
834	return backend;	938	return backend;
835	}	939	}
836		940
837	static void	941	unsigned int
		942	ev_loop_count (EV_P)
		943	{
		944	return loop_count;
		945	}
		946
		947	static void noinline
838	loop_init (EV_P_ unsigned int flags)	948	loop_init (EV_P_ unsigned int flags)
839	{	949	{
840	if (!backend)	950	if (!backend)
841	{	951	{
842	#if EV_USE_MONOTONIC	952	#if EV_USE_MONOTONIC
…		…
850	ev_rt_now = ev_time ();	960	ev_rt_now = ev_time ();
851	mn_now = get_clock ();	961	mn_now = get_clock ();
852	now_floor = mn_now;	962	now_floor = mn_now;
853	rtmn_diff = ev_rt_now - mn_now;	963	rtmn_diff = ev_rt_now - mn_now;
854		964
		965	/* pid check not overridable via env */
		966	#ifndef _WIN32
		967	if (flags & EVFLAG_FORKCHECK)
		968	curpid = getpid ();
		969	#endif
		970
855	if (!(flags & EVFLAG_NOENV)	971	if (!(flags & EVFLAG_NOENV)
856	&& !enable_secure ()	972	&& !enable_secure ()
857	&& getenv ("LIBEV_FLAGS"))	973	&& getenv ("LIBEV_FLAGS"))
858	flags = atoi (getenv ("LIBEV_FLAGS"));	974	flags = atoi (getenv ("LIBEV_FLAGS"));
859		975
860	if (!(flags & 0x0000ffffUL))	976	if (!(flags & 0x0000ffffUL))
861	flags |= ev_recommended_backends ();	977	flags |= ev_recommended_backends ();
862		978
863	backend = 0;	979	backend = 0;
		980	backend_fd = -1;
		981	#if EV_USE_INOTIFY
		982	fs_fd = -2;
		983	#endif
		984
864	#if EV_USE_PORT	985	#if EV_USE_PORT
865	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	986	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
866	#endif	987	#endif
867	#if EV_USE_KQUEUE	988	#if EV_USE_KQUEUE
868	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	989	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
880	ev_init (&sigev, sigcb);	1001	ev_init (&sigev, sigcb);
881	ev_set_priority (&sigev, EV_MAXPRI);	1002	ev_set_priority (&sigev, EV_MAXPRI);
882	}	1003	}
883	}	1004	}
884		1005
885	static void	1006	static void noinline
886	loop_destroy (EV_P)	1007	loop_destroy (EV_P)
887	{	1008	{
888	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);
889		1018
890	#if EV_USE_PORT	1019	#if EV_USE_PORT
891	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1020	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
892	#endif	1021	#endif
893	#if EV_USE_KQUEUE	1022	#if EV_USE_KQUEUE
…		…
902	#if EV_USE_SELECT	1031	#if EV_USE_SELECT
903	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1032	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
904	#endif	1033	#endif
905		1034
906	for (i = NUMPRI; i--; )	1035	for (i = NUMPRI; i--; )
		1036	{
907	array_free (pending, [i]);	1037	array_free (pending, [i]);
		1038	#if EV_IDLE_ENABLE
		1039	array_free (idle, [i]);
		1040	#endif
		1041	}
908		1042
909	/* have to use the microsoft-never-gets-it-right macro */	1043	/* have to use the microsoft-never-gets-it-right macro */
910	array_free (fdchange, EMPTY0);	1044	array_free (fdchange, EMPTY);
911	array_free (timer, EMPTY0);	1045	array_free (timer, EMPTY);
912	#if EV_PERIODICS	1046	#if EV_PERIODIC_ENABLE
913	array_free (periodic, EMPTY0);	1047	array_free (periodic, EMPTY);
914	#endif	1048	#endif
915	array_free (idle, EMPTY0);
916	array_free (prepare, EMPTY0);	1049	array_free (prepare, EMPTY);
917	array_free (check, EMPTY0);	1050	array_free (check, EMPTY);
918		1051
919	backend = 0;	1052	backend = 0;
920	}	1053	}
921		1054
922	static void	1055	void inline_size infy_fork (EV_P);
		1056
		1057	void inline_size
923	loop_fork (EV_P)	1058	loop_fork (EV_P)
924	{	1059	{
925	#if EV_USE_PORT	1060	#if EV_USE_PORT
926	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1061	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
927	#endif	1062	#endif
928	#if EV_USE_KQUEUE	1063	#if EV_USE_KQUEUE
929	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1064	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
930	#endif	1065	#endif
931	#if EV_USE_EPOLL	1066	#if EV_USE_EPOLL
932	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1067	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1068	#endif
		1069	#if EV_USE_INOTIFY
		1070	infy_fork (EV_A);
933	#endif	1071	#endif
934		1072
935	if (ev_is_active (&sigev))	1073	if (ev_is_active (&sigev))
936	{	1074	{
937	/* default loop */	1075	/* default loop */
…		…
1053	postfork = 1;	1191	postfork = 1;
1054	}	1192	}
1055		1193
1056	/*****************************************************************************/	1194	/*****************************************************************************/
1057		1195
1058	static int	1196	void
1059	any_pending (EV_P)	1197	ev_invoke (EV_P_ void *w, int revents)
1060	{	1198	{
1061	int pri;	1199	EV_CB_INVOKE ((W)w, revents);
1062
1063	for (pri = NUMPRI; pri--; )
1064	if (pendingcnt [pri])
1065	return 1;
1066
1067	return 0;
1068	}	1200	}
1069		1201
1070	inline void	1202	void inline_speed
1071	call_pending (EV_P)	1203	call_pending (EV_P)
1072	{	1204	{
1073	int pri;	1205	int pri;
1074		1206
1075	for (pri = NUMPRI; pri--; )	1207	for (pri = NUMPRI; pri--; )
…		…
1077	{	1209	{
1078	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1210	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1079		1211
1080	if (expect_true (p->w))	1212	if (expect_true (p->w))
1081	{	1213	{
		1214	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1215
1082	p->w->pending = 0;	1216	p->w->pending = 0;
1083	EV_CB_INVOKE (p->w, p->events);	1217	EV_CB_INVOKE (p->w, p->events);
1084	}	1218	}
1085	}	1219	}
1086	}	1220	}
1087		1221
1088	inline void	1222	void inline_size
1089	timers_reify (EV_P)	1223	timers_reify (EV_P)
1090	{	1224	{
1091	while (timercnt && ((WT)timers [0])->at <= mn_now)	1225	while (timercnt && ((WT)timers [0])->at <= mn_now)
1092	{	1226	{
1093	struct ev_timer *w = timers [0];	1227	ev_timer *w = (ev_timer *)timers [0];
1094		1228
1095	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1229	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1096		1230
1097	/* first reschedule or stop timer */	1231	/* first reschedule or stop timer */
1098	if (w->repeat)	1232	if (w->repeat)
1099	{	1233	{
1100	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1234	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1101		1235
1102	((WT)w)->at += w->repeat;	1236	((WT)w)->at += w->repeat;
1103	if (((WT)w)->at < mn_now)	1237	if (((WT)w)->at < mn_now)
1104	((WT)w)->at = mn_now;	1238	((WT)w)->at = mn_now;
1105		1239
1106	downheap ((WT *)timers, timercnt, 0);	1240	downheap (timers, timercnt, 0);
1107	}	1241	}
1108	else	1242	else
1109	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1243	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1110		1244
1111	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1245	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1112	}	1246	}
1113	}	1247	}
1114		1248
1115	#if EV_PERIODICS	1249	#if EV_PERIODIC_ENABLE
1116	inline void	1250	void inline_size
1117	periodics_reify (EV_P)	1251	periodics_reify (EV_P)
1118	{	1252	{
1119	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1253	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1120	{	1254	{
1121	struct ev_periodic *w = periodics [0];	1255	ev_periodic *w = (ev_periodic *)periodics [0];
1122		1256
1123	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1257	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1124		1258
1125	/* first reschedule or stop timer */	1259	/* first reschedule or stop timer */
1126	if (w->reschedule_cb)	1260	if (w->reschedule_cb)
1127	{	1261	{
1128	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1262	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1129	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1263	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1130	downheap ((WT *)periodics, periodiccnt, 0);	1264	downheap (periodics, periodiccnt, 0);
1131	}	1265	}
1132	else if (w->interval)	1266	else if (w->interval)
1133	{	1267	{
1134	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1268	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1269	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1135	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1270	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1136	downheap ((WT *)periodics, periodiccnt, 0);	1271	downheap (periodics, periodiccnt, 0);
1137	}	1272	}
1138	else	1273	else
1139	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1274	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1140		1275
1141	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1276	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1142	}	1277	}
1143	}	1278	}
1144		1279
1145	static void	1280	static void noinline
1146	periodics_reschedule (EV_P)	1281	periodics_reschedule (EV_P)
1147	{	1282	{
1148	int i;	1283	int i;
1149		1284
1150	/* adjust periodics after time jump */	1285	/* adjust periodics after time jump */
1151	for (i = 0; i < periodiccnt; ++i)	1286	for (i = 0; i < periodiccnt; ++i)
1152	{	1287	{
1153	struct ev_periodic *w = periodics [i];	1288	ev_periodic *w = (ev_periodic *)periodics [i];
1154		1289
1155	if (w->reschedule_cb)	1290	if (w->reschedule_cb)
1156	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1291	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1157	else if (w->interval)	1292	else if (w->interval)
1158	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1293	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1159	}	1294	}
1160		1295
1161	/* now rebuild the heap */	1296	/* now rebuild the heap */
1162	for (i = periodiccnt >> 1; i--; )	1297	for (i = periodiccnt >> 1; i--; )
1163	downheap ((WT *)periodics, periodiccnt, i);	1298	downheap (periodics, periodiccnt, i);
1164	}	1299	}
1165	#endif	1300	#endif
1166		1301
1167	inline int	1302	#if EV_IDLE_ENABLE
1168	time_update_monotonic (EV_P)	1303	void inline_size
		1304	idle_reify (EV_P)
1169	{	1305	{
		1306	if (expect_false (idleall))
		1307	{
		1308	int pri;
		1309
		1310	for (pri = NUMPRI; pri--; )
		1311	{
		1312	if (pendingcnt [pri])
		1313	break;
		1314
		1315	if (idlecnt [pri])
		1316	{
		1317	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1318	break;
		1319	}
		1320	}
		1321	}
		1322	}
		1323	#endif
		1324
		1325	void inline_speed
		1326	time_update (EV_P_ ev_tstamp max_block)
		1327	{
		1328	int i;
		1329
		1330	#if EV_USE_MONOTONIC
		1331	if (expect_true (have_monotonic))
		1332	{
		1333	ev_tstamp odiff = rtmn_diff;
		1334
1170	mn_now = get_clock ();	1335	mn_now = get_clock ();
1171		1336
		1337	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1338	/* interpolate in the meantime */
1172	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1339	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1173	{	1340	{
1174	ev_rt_now = rtmn_diff + mn_now;	1341	ev_rt_now = rtmn_diff + mn_now;
1175	return 0;	1342	return;
1176	}	1343	}
1177	else	1344
1178	{
1179	now_floor = mn_now;	1345	now_floor = mn_now;
1180	ev_rt_now = ev_time ();	1346	ev_rt_now = ev_time ();
1181	return 1;
1182	}
1183	}
1184		1347
1185	inline void	1348	/* loop a few times, before making important decisions.
1186	time_update (EV_P)	1349	* on the choice of "4": one iteration isn't enough,
1187	{	1350	* in case we get preempted during the calls to
1188	int i;	1351	* ev_time and get_clock. a second call is almost guaranteed
1189		1352	* to succeed in that case, though. and looping a few more times
1190	#if EV_USE_MONOTONIC	1353	* doesn't hurt either as we only do this on time-jumps or
1191	if (expect_true (have_monotonic))	1354	* in the unlikely event of having been preempted here.
1192	{	1355	*/
1193	if (time_update_monotonic (EV_A))	1356	for (i = 4; --i; )
1194	{	1357	{
1195	ev_tstamp odiff = rtmn_diff;
1196
1197	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1198	{
1199	rtmn_diff = ev_rt_now - mn_now;	1358	rtmn_diff = ev_rt_now - mn_now;
1200		1359
1201	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1360	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1202	return; /* all is well */	1361	return; /* all is well */
1203		1362
1204	ev_rt_now = ev_time ();	1363	ev_rt_now = ev_time ();
1205	mn_now = get_clock ();	1364	mn_now = get_clock ();
1206	now_floor = mn_now;	1365	now_floor = mn_now;
1207	}	1366	}
1208		1367
1209	# if EV_PERIODICS	1368	# if EV_PERIODIC_ENABLE
		1369	periodics_reschedule (EV_A);
		1370	# endif
		1371	/* no timer adjustment, as the monotonic clock doesn't jump */
		1372	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1373	}
		1374	else
		1375	#endif
		1376	{
		1377	ev_rt_now = ev_time ();
		1378
		1379	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1380	{
		1381	#if EV_PERIODIC_ENABLE
1210	periodics_reschedule (EV_A);	1382	periodics_reschedule (EV_A);
1211	# endif	1383	#endif
1212	/* no timer adjustment, as the monotonic clock doesn't jump */
1213	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1214	}
1215	}
1216	else
1217	#endif
1218	{
1219	ev_rt_now = ev_time ();
1220
1221	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1222	{
1223	#if EV_PERIODICS
1224	periodics_reschedule (EV_A);
1225	#endif
1226
1227	/* adjust timers. this is easy, as the offset is the same for all */	1384	/* adjust timers. this is easy, as the offset is the same for all of them */
1228	for (i = 0; i < timercnt; ++i)	1385	for (i = 0; i < timercnt; ++i)
1229	((WT)timers [i])->at += ev_rt_now - mn_now;	1386	((WT)timers [i])->at += ev_rt_now - mn_now;
1230	}	1387	}
1231		1388
1232	mn_now = ev_rt_now;	1389	mn_now = ev_rt_now;
…		…
1248	static int loop_done;	1405	static int loop_done;
1249		1406
1250	void	1407	void
1251	ev_loop (EV_P_ int flags)	1408	ev_loop (EV_P_ int flags)
1252	{	1409	{
1253	double block;
1254	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1410	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1411	? EVUNLOOP_ONE
		1412	: EVUNLOOP_CANCEL;
1255		1413
1256	while (activecnt)	1414	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1415
		1416	do
1257	{	1417	{
		1418	#ifndef _WIN32
		1419	if (expect_false (curpid)) /* penalise the forking check even more */
		1420	if (expect_false (getpid () != curpid))
		1421	{
		1422	curpid = getpid ();
		1423	postfork = 1;
		1424	}
		1425	#endif
		1426
		1427	#if EV_FORK_ENABLE
		1428	/* we might have forked, so queue fork handlers */
		1429	if (expect_false (postfork))
		1430	if (forkcnt)
		1431	{
		1432	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1433	call_pending (EV_A);
		1434	}
		1435	#endif
		1436
1258	/* queue check watchers (and execute them) */	1437	/* queue prepare watchers (and execute them) */
1259	if (expect_false (preparecnt))	1438	if (expect_false (preparecnt))
1260	{	1439	{
1261	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1440	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1262	call_pending (EV_A);	1441	call_pending (EV_A);
1263	}	1442	}
1264		1443
		1444	if (expect_false (!activecnt))
		1445	break;
		1446
1265	/* we might have forked, so reify kernel state if necessary */	1447	/* we might have forked, so reify kernel state if necessary */
1266	if (expect_false (postfork))	1448	if (expect_false (postfork))
1267	loop_fork (EV_A);	1449	loop_fork (EV_A);
1268		1450
1269	/* update fd-related kernel structures */	1451	/* update fd-related kernel structures */
1270	fd_reify (EV_A);	1452	fd_reify (EV_A);
1271		1453
1272	/* calculate blocking time */	1454	/* calculate blocking time */
		1455	{
		1456	ev_tstamp block;
1273		1457
1274	/* we only need this for !monotonic clock or timers, but as we basically	1458	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1275	always have timers, we just calculate it always */	1459	block = 0.; /* do not block at all */
1276	#if EV_USE_MONOTONIC
1277	if (expect_true (have_monotonic))
1278	time_update_monotonic (EV_A);
1279	else	1460	else
1280	#endif
1281	{	1461	{
1282	ev_rt_now = ev_time ();	1462	/* update time to cancel out callback processing overhead */
1283	mn_now = ev_rt_now;	1463	time_update (EV_A_ 1e100);
1284	}
1285		1464
1286	if (flags & EVLOOP_NONBLOCK || idlecnt)
1287	block = 0.;
1288	else
1289	{
1290	block = MAX_BLOCKTIME;	1465	block = MAX_BLOCKTIME;
1291		1466
1292	if (timercnt)	1467	if (timercnt)
1293	{	1468	{
1294	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1469	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1295	if (block > to) block = to;	1470	if (block > to) block = to;
1296	}	1471	}
1297		1472
1298	#if EV_PERIODICS	1473	#if EV_PERIODIC_ENABLE
1299	if (periodiccnt)	1474	if (periodiccnt)
1300	{	1475	{
1301	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1476	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1302	if (block > to) block = to;	1477	if (block > to) block = to;
1303	}	1478	}
1304	#endif	1479	#endif
1305		1480
1306	if (expect_false (block < 0.)) block = 0.;	1481	if (expect_false (block < 0.)) block = 0.;
1307	}	1482	}
1308		1483
		1484	++loop_count;
1309	backend_poll (EV_A_ block);	1485	backend_poll (EV_A_ block);
1310		1486
1311	/* update ev_rt_now, do magic */	1487	/* update ev_rt_now, do magic */
1312	time_update (EV_A);	1488	time_update (EV_A_ block);
		1489	}
1313		1490
1314	/* queue pending timers and reschedule them */	1491	/* queue pending timers and reschedule them */
1315	timers_reify (EV_A); /* relative timers called last */	1492	timers_reify (EV_A); /* relative timers called last */
1316	#if EV_PERIODICS	1493	#if EV_PERIODIC_ENABLE
1317	periodics_reify (EV_A); /* absolute timers called first */	1494	periodics_reify (EV_A); /* absolute timers called first */
1318	#endif	1495	#endif
1319		1496
		1497	#if EV_IDLE_ENABLE
1320	/* queue idle watchers unless io or timers are pending */	1498	/* queue idle watchers unless other events are pending */
1321	if (idlecnt && !any_pending (EV_A))	1499	idle_reify (EV_A);
1322	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1500	#endif
1323		1501
1324	/* queue check watchers, to be executed first */	1502	/* queue check watchers, to be executed first */
1325	if (expect_false (checkcnt))	1503	if (expect_false (checkcnt))
1326	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1504	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1327		1505
1328	call_pending (EV_A);	1506	call_pending (EV_A);
1329		1507
1330	if (expect_false (loop_done))
1331	break;
1332	}	1508	}
		1509	while (expect_true (activecnt && !loop_done));
1333		1510
1334	if (loop_done != 2)	1511	if (loop_done == EVUNLOOP_ONE)
1335	loop_done = 0;	1512	loop_done = EVUNLOOP_CANCEL;
1336	}	1513	}
1337		1514
1338	void	1515	void
1339	ev_unloop (EV_P_ int how)	1516	ev_unloop (EV_P_ int how)
1340	{	1517	{
1341	loop_done = how;	1518	loop_done = how;
1342	}	1519	}
1343		1520
1344	/*****************************************************************************/	1521	/*****************************************************************************/
1345		1522
1346	inline void	1523	void inline_size
1347	wlist_add (WL *head, WL elem)	1524	wlist_add (WL *head, WL elem)
1348	{	1525	{
1349	elem->next = *head;	1526	elem->next = *head;
1350	*head = elem;	1527	*head = elem;
1351	}	1528	}
1352		1529
1353	inline void	1530	void inline_size
1354	wlist_del (WL *head, WL elem)	1531	wlist_del (WL *head, WL elem)
1355	{	1532	{
1356	while (*head)	1533	while (*head)
1357	{	1534	{
1358	if (*head == elem)	1535	if (*head == elem)
…		…
1363		1540
1364	head = &(*head)->next;	1541	head = &(*head)->next;
1365	}	1542	}
1366	}	1543	}
1367		1544
1368	inline void	1545	void inline_speed
1369	ev_clear_pending (EV_P_ W w)	1546	clear_pending (EV_P_ W w)
1370	{	1547	{
1371	if (w->pending)	1548	if (w->pending)
1372	{	1549	{
1373	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1550	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1374	w->pending = 0;	1551	w->pending = 0;
1375	}	1552	}
1376	}	1553	}
1377		1554
1378	inline void	1555	int
		1556	ev_clear_pending (EV_P_ void *w)
		1557	{
		1558	W w_ = (W)w;
		1559	int pending = w_->pending;
		1560
		1561	if (expect_true (pending))
		1562	{
		1563	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1564	w_->pending = 0;
		1565	p->w = 0;
		1566	return p->events;
		1567	}
		1568	else
		1569	return 0;
		1570	}
		1571
		1572	void inline_size
		1573	pri_adjust (EV_P_ W w)
		1574	{
		1575	int pri = w->priority;
		1576	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1577	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1578	w->priority = pri;
		1579	}
		1580
		1581	void inline_speed
1379	ev_start (EV_P_ W w, int active)	1582	ev_start (EV_P_ W w, int active)
1380	{	1583	{
1381	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1584	pri_adjust (EV_A_ w);
1382	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1383
1384	w->active = active;	1585	w->active = active;
1385	ev_ref (EV_A);	1586	ev_ref (EV_A);
1386	}	1587	}
1387		1588
1388	inline void	1589	void inline_size
1389	ev_stop (EV_P_ W w)	1590	ev_stop (EV_P_ W w)
1390	{	1591	{
1391	ev_unref (EV_A);	1592	ev_unref (EV_A);
1392	w->active = 0;	1593	w->active = 0;
1393	}	1594	}
1394		1595
1395	/*****************************************************************************/	1596	/*****************************************************************************/
1396		1597
1397	void	1598	void noinline
1398	ev_io_start (EV_P_ struct ev_io *w)	1599	ev_io_start (EV_P_ ev_io *w)
1399	{	1600	{
1400	int fd = w->fd;	1601	int fd = w->fd;
1401		1602
1402	if (expect_false (ev_is_active (w)))	1603	if (expect_false (ev_is_active (w)))
1403	return;	1604	return;
1404		1605
1405	assert (("ev_io_start called with negative fd", fd >= 0));	1606	assert (("ev_io_start called with negative fd", fd >= 0));
1406		1607
1407	ev_start (EV_A_ (W)w, 1);	1608	ev_start (EV_A_ (W)w, 1);
1408	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1609	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1409	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1610	wlist_add (&anfds[fd].head, (WL)w);
1410		1611
1411	fd_change (EV_A_ fd);	1612	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1613	w->events &= ~EV_IOFDSET;
1412	}	1614	}
1413		1615
1414	void	1616	void noinline
1415	ev_io_stop (EV_P_ struct ev_io *w)	1617	ev_io_stop (EV_P_ ev_io *w)
1416	{	1618	{
1417	ev_clear_pending (EV_A_ (W)w);	1619	clear_pending (EV_A_ (W)w);
1418	if (expect_false (!ev_is_active (w)))	1620	if (expect_false (!ev_is_active (w)))
1419	return;	1621	return;
1420		1622
1421	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1623	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1422		1624
1423	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1625	wlist_del (&anfds[w->fd].head, (WL)w);
1424	ev_stop (EV_A_ (W)w);	1626	ev_stop (EV_A_ (W)w);
1425		1627
1426	fd_change (EV_A_ w->fd);	1628	fd_change (EV_A_ w->fd, 1);
1427	}	1629	}
1428		1630
1429	void	1631	void noinline
1430	ev_timer_start (EV_P_ struct ev_timer *w)	1632	ev_timer_start (EV_P_ ev_timer *w)
1431	{	1633	{
1432	if (expect_false (ev_is_active (w)))	1634	if (expect_false (ev_is_active (w)))
1433	return;	1635	return;
1434		1636
1435	((WT)w)->at += mn_now;	1637	((WT)w)->at += mn_now;
1436		1638
1437	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1639	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1438		1640
1439	ev_start (EV_A_ (W)w, ++timercnt);	1641	ev_start (EV_A_ (W)w, ++timercnt);
1440	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);	1642	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1441	timers [timercnt - 1] = w;	1643	timers [timercnt - 1] = (WT)w;
1442	upheap ((WT *)timers, timercnt - 1);	1644	upheap (timers, timercnt - 1);
1443		1645
1444	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1646	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1445	}	1647	}
1446		1648
1447	void	1649	void noinline
1448	ev_timer_stop (EV_P_ struct ev_timer *w)	1650	ev_timer_stop (EV_P_ ev_timer *w)
1449	{	1651	{
1450	ev_clear_pending (EV_A_ (W)w);	1652	clear_pending (EV_A_ (W)w);
1451	if (expect_false (!ev_is_active (w)))	1653	if (expect_false (!ev_is_active (w)))
1452	return;	1654	return;
1453		1655
1454	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1656	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1455		1657
		1658	{
		1659	int active = ((W)w)->active;
		1660
1456	if (expect_true (((W)w)->active < timercnt--))	1661	if (expect_true (--active < --timercnt))
1457	{	1662	{
1458	timers [((W)w)->active - 1] = timers [timercnt];	1663	timers [active] = timers [timercnt];
1459	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1664	adjustheap (timers, timercnt, active);
1460	}	1665	}
		1666	}
1461		1667
1462	((WT)w)->at -= mn_now;	1668	((WT)w)->at -= mn_now;
1463		1669
1464	ev_stop (EV_A_ (W)w);	1670	ev_stop (EV_A_ (W)w);
1465	}	1671	}
1466		1672
1467	void	1673	void noinline
1468	ev_timer_again (EV_P_ struct ev_timer *w)	1674	ev_timer_again (EV_P_ ev_timer *w)
1469	{	1675	{
1470	if (ev_is_active (w))	1676	if (ev_is_active (w))
1471	{	1677	{
1472	if (w->repeat)	1678	if (w->repeat)
1473	{	1679	{
1474	((WT)w)->at = mn_now + w->repeat;	1680	((WT)w)->at = mn_now + w->repeat;
1475	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1681	adjustheap (timers, timercnt, ((W)w)->active - 1);
1476	}	1682	}
1477	else	1683	else
1478	ev_timer_stop (EV_A_ w);	1684	ev_timer_stop (EV_A_ w);
1479	}	1685	}
1480	else if (w->repeat)	1686	else if (w->repeat)
…		…
1482	w->at = w->repeat;	1688	w->at = w->repeat;
1483	ev_timer_start (EV_A_ w);	1689	ev_timer_start (EV_A_ w);
1484	}	1690	}
1485	}	1691	}
1486		1692
1487	#if EV_PERIODICS	1693	#if EV_PERIODIC_ENABLE
1488	void	1694	void noinline
1489	ev_periodic_start (EV_P_ struct ev_periodic *w)	1695	ev_periodic_start (EV_P_ ev_periodic *w)
1490	{	1696	{
1491	if (expect_false (ev_is_active (w)))	1697	if (expect_false (ev_is_active (w)))
1492	return;	1698	return;
1493		1699
1494	if (w->reschedule_cb)	1700	if (w->reschedule_cb)
1495	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1701	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1496	else if (w->interval)	1702	else if (w->interval)
1497	{	1703	{
1498	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1704	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 */	1705	/* 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;	1706	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1501	}	1707	}
		1708	else
		1709	((WT)w)->at = w->offset;
1502		1710
1503	ev_start (EV_A_ (W)w, ++periodiccnt);	1711	ev_start (EV_A_ (W)w, ++periodiccnt);
1504	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1712	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1505	periodics [periodiccnt - 1] = w;	1713	periodics [periodiccnt - 1] = (WT)w;
1506	upheap ((WT *)periodics, periodiccnt - 1);	1714	upheap (periodics, periodiccnt - 1);
1507		1715
1508	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1716	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1509	}	1717	}
1510		1718
1511	void	1719	void noinline
1512	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1720	ev_periodic_stop (EV_P_ ev_periodic *w)
1513	{	1721	{
1514	ev_clear_pending (EV_A_ (W)w);	1722	clear_pending (EV_A_ (W)w);
1515	if (expect_false (!ev_is_active (w)))	1723	if (expect_false (!ev_is_active (w)))
1516	return;	1724	return;
1517		1725
1518	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1726	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1519		1727
		1728	{
		1729	int active = ((W)w)->active;
		1730
1520	if (expect_true (((W)w)->active < periodiccnt--))	1731	if (expect_true (--active < --periodiccnt))
1521	{	1732	{
1522	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1733	periodics [active] = periodics [periodiccnt];
1523	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1734	adjustheap (periodics, periodiccnt, active);
1524	}	1735	}
		1736	}
1525		1737
1526	ev_stop (EV_A_ (W)w);	1738	ev_stop (EV_A_ (W)w);
1527	}	1739	}
1528		1740
1529	void	1741	void noinline
1530	ev_periodic_again (EV_P_ struct ev_periodic *w)	1742	ev_periodic_again (EV_P_ ev_periodic *w)
1531	{	1743	{
1532	/* TODO: use adjustheap and recalculation */	1744	/* TODO: use adjustheap and recalculation */
1533	ev_periodic_stop (EV_A_ w);	1745	ev_periodic_stop (EV_A_ w);
1534	ev_periodic_start (EV_A_ w);	1746	ev_periodic_start (EV_A_ w);
1535	}	1747	}
1536	#endif	1748	#endif
1537		1749
1538	void
1539	ev_idle_start (EV_P_ struct 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 (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1546	idles [idlecnt - 1] = w;
1547	}
1548
1549	void
1550	ev_idle_stop (EV_P_ struct 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_ struct 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 (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1568	prepares [preparecnt - 1] = w;
1569	}
1570
1571	void
1572	ev_prepare_stop (EV_P_ struct 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_ struct 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 (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1590	checks [checkcnt - 1] = w;
1591	}
1592
1593	void
1594	ev_check_stop (EV_P_ struct 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	1750	#ifndef SA_RESTART
1605	# define SA_RESTART 0	1751	# define SA_RESTART 0
1606	#endif	1752	#endif
1607		1753
1608	void	1754	void noinline
1609	ev_signal_start (EV_P_ struct ev_signal *w)	1755	ev_signal_start (EV_P_ ev_signal *w)
1610	{	1756	{
1611	#if EV_MULTIPLICITY	1757	#if EV_MULTIPLICITY
1612	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1758	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1613	#endif	1759	#endif
1614	if (expect_false (ev_is_active (w)))	1760	if (expect_false (ev_is_active (w)))
1615	return;	1761	return;
1616		1762
1617	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1763	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1618		1764
		1765	{
		1766	#ifndef _WIN32
		1767	sigset_t full, prev;
		1768	sigfillset (&full);
		1769	sigprocmask (SIG_SETMASK, &full, &prev);
		1770	#endif
		1771
		1772	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1773
		1774	#ifndef _WIN32
		1775	sigprocmask (SIG_SETMASK, &prev, 0);
		1776	#endif
		1777	}
		1778
1619	ev_start (EV_A_ (W)w, 1);	1779	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);	1780	wlist_add (&signals [w->signum - 1].head, (WL)w);
1622		1781
1623	if (!((WL)w)->next)	1782	if (!((WL)w)->next)
1624	{	1783	{
1625	#if _WIN32	1784	#if _WIN32
1626	signal (w->signum, sighandler);	1785	signal (w->signum, sighandler);
…		…
1632	sigaction (w->signum, &sa, 0);	1791	sigaction (w->signum, &sa, 0);
1633	#endif	1792	#endif
1634	}	1793	}
1635	}	1794	}
1636		1795
1637	void	1796	void noinline
1638	ev_signal_stop (EV_P_ struct ev_signal *w)	1797	ev_signal_stop (EV_P_ ev_signal *w)
1639	{	1798	{
1640	ev_clear_pending (EV_A_ (W)w);	1799	clear_pending (EV_A_ (W)w);
1641	if (expect_false (!ev_is_active (w)))	1800	if (expect_false (!ev_is_active (w)))
1642	return;	1801	return;
1643		1802
1644	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1803	wlist_del (&signals [w->signum - 1].head, (WL)w);
1645	ev_stop (EV_A_ (W)w);	1804	ev_stop (EV_A_ (W)w);
1646		1805
1647	if (!signals [w->signum - 1].head)	1806	if (!signals [w->signum - 1].head)
1648	signal (w->signum, SIG_DFL);	1807	signal (w->signum, SIG_DFL);
1649	}	1808	}
1650		1809
1651	void	1810	void
1652	ev_child_start (EV_P_ struct ev_child *w)	1811	ev_child_start (EV_P_ ev_child *w)
1653	{	1812	{
1654	#if EV_MULTIPLICITY	1813	#if EV_MULTIPLICITY
1655	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1814	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1656	#endif	1815	#endif
1657	if (expect_false (ev_is_active (w)))	1816	if (expect_false (ev_is_active (w)))
1658	return;	1817	return;
1659		1818
1660	ev_start (EV_A_ (W)w, 1);	1819	ev_start (EV_A_ (W)w, 1);
1661	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1820	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1662	}	1821	}
1663		1822
1664	void	1823	void
1665	ev_child_stop (EV_P_ struct ev_child *w)	1824	ev_child_stop (EV_P_ ev_child *w)
1666	{	1825	{
1667	ev_clear_pending (EV_A_ (W)w);	1826	clear_pending (EV_A_ (W)w);
1668	if (expect_false (!ev_is_active (w)))	1827	if (expect_false (!ev_is_active (w)))
1669	return;	1828	return;
1670		1829
1671	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1830	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1672	ev_stop (EV_A_ (W)w);	1831	ev_stop (EV_A_ (W)w);
1673	}	1832	}
1674		1833
1675	#if EV_MULTIPLICITY	1834	#if EV_STAT_ENABLE
		1835
		1836	# ifdef _WIN32
		1837	# undef lstat
		1838	# define lstat(a,b) _stati64 (a,b)
		1839	# endif
		1840
		1841	#define DEF_STAT_INTERVAL 5.0074891
		1842	#define MIN_STAT_INTERVAL 0.1074891
		1843
		1844	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1845
		1846	#if EV_USE_INOTIFY
		1847	# define EV_INOTIFY_BUFSIZE 8192
		1848
		1849	static void noinline
		1850	infy_add (EV_P_ ev_stat *w)
		1851	{
		1852	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);
		1853
		1854	if (w->wd < 0)
		1855	{
		1856	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1857
		1858	/* monitor some parent directory for speedup hints */
		1859	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1860	{
		1861	char path [4096];
		1862	strcpy (path, w->path);
		1863
		1864	do
		1865	{
		1866	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1867	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1868
		1869	char *pend = strrchr (path, '/');
		1870
		1871	if (!pend)
		1872	break; /* whoops, no '/', complain to your admin */
		1873
		1874	*pend = 0;
		1875	w->wd = inotify_add_watch (fs_fd, path, mask);
		1876	}
		1877	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1878	}
		1879	}
		1880	else
		1881	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1882
		1883	if (w->wd >= 0)
		1884	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1885	}
		1886
		1887	static void noinline
		1888	infy_del (EV_P_ ev_stat *w)
		1889	{
		1890	int slot;
		1891	int wd = w->wd;
		1892
		1893	if (wd < 0)
		1894	return;
		1895
		1896	w->wd = -2;
		1897	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1898	wlist_del (&fs_hash [slot].head, (WL)w);
		1899
		1900	/* remove this watcher, if others are watching it, they will rearm */
		1901	inotify_rm_watch (fs_fd, wd);
		1902	}
		1903
		1904	static void noinline
		1905	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1906	{
		1907	if (slot < 0)
		1908	/* overflow, need to check for all hahs slots */
		1909	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1910	infy_wd (EV_A_ slot, wd, ev);
		1911	else
		1912	{
		1913	WL w_;
		1914
		1915	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1916	{
		1917	ev_stat *w = (ev_stat *)w_;
		1918	w_ = w_->next; /* lets us remove this watcher and all before it */
		1919
		1920	if (w->wd == wd || wd == -1)
		1921	{
		1922	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1923	{
		1924	w->wd = -1;
		1925	infy_add (EV_A_ w); /* re-add, no matter what */
		1926	}
		1927
		1928	stat_timer_cb (EV_A_ &w->timer, 0);
		1929	}
		1930	}
		1931	}
		1932	}
		1933
1676	static void	1934	static void
1677	embed_cb (EV_P_ struct ev_io *io, int revents)	1935	infy_cb (EV_P_ ev_io *w, int revents)
1678	{	1936	{
1679	struct ev_embed *w = (struct ev_embed *)(((char *)io) - offsetof (struct ev_embed, io));	1937	char buf [EV_INOTIFY_BUFSIZE];
		1938	struct inotify_event *ev = (struct inotify_event *)buf;
		1939	int ofs;
		1940	int len = read (fs_fd, buf, sizeof (buf));
1680		1941
		1942	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1943	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1944	}
		1945
		1946	void inline_size
		1947	infy_init (EV_P)
		1948	{
		1949	if (fs_fd != -2)
		1950	return;
		1951
		1952	fs_fd = inotify_init ();
		1953
		1954	if (fs_fd >= 0)
		1955	{
		1956	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1957	ev_set_priority (&fs_w, EV_MAXPRI);
		1958	ev_io_start (EV_A_ &fs_w);
		1959	}
		1960	}
		1961
		1962	void inline_size
		1963	infy_fork (EV_P)
		1964	{
		1965	int slot;
		1966
		1967	if (fs_fd < 0)
		1968	return;
		1969
		1970	close (fs_fd);
		1971	fs_fd = inotify_init ();
		1972
		1973	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1974	{
		1975	WL w_ = fs_hash [slot].head;
		1976	fs_hash [slot].head = 0;
		1977
		1978	while (w_)
		1979	{
		1980	ev_stat *w = (ev_stat *)w_;
		1981	w_ = w_->next; /* lets us add this watcher */
		1982
		1983	w->wd = -1;
		1984
		1985	if (fs_fd >= 0)
		1986	infy_add (EV_A_ w); /* re-add, no matter what */
		1987	else
		1988	ev_timer_start (EV_A_ &w->timer);
		1989	}
		1990
		1991	}
		1992	}
		1993
		1994	#endif
		1995
		1996	void
		1997	ev_stat_stat (EV_P_ ev_stat *w)
		1998	{
		1999	if (lstat (w->path, &w->attr) < 0)
		2000	w->attr.st_nlink = 0;
		2001	else if (!w->attr.st_nlink)
		2002	w->attr.st_nlink = 1;
		2003	}
		2004
		2005	static void noinline
		2006	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2007	{
		2008	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2009
		2010	/* we copy this here each the time so that */
		2011	/* prev has the old value when the callback gets invoked */
		2012	w->prev = w->attr;
		2013	ev_stat_stat (EV_A_ w);
		2014
		2015	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2016	if (
		2017	w->prev.st_dev != w->attr.st_dev
		2018	|| w->prev.st_ino != w->attr.st_ino
		2019	|| w->prev.st_mode != w->attr.st_mode
		2020	|| w->prev.st_nlink != w->attr.st_nlink
		2021	|| w->prev.st_uid != w->attr.st_uid
		2022	|| w->prev.st_gid != w->attr.st_gid
		2023	|| w->prev.st_rdev != w->attr.st_rdev
		2024	|| w->prev.st_size != w->attr.st_size
		2025	|| w->prev.st_atime != w->attr.st_atime
		2026	|| w->prev.st_mtime != w->attr.st_mtime
		2027	|| w->prev.st_ctime != w->attr.st_ctime
		2028	) {
		2029	#if EV_USE_INOTIFY
		2030	infy_del (EV_A_ w);
		2031	infy_add (EV_A_ w);
		2032	ev_stat_stat (EV_A_ w); /* avoid race... */
		2033	#endif
		2034
1681	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2035	ev_feed_event (EV_A_ w, EV_STAT);
		2036	}
		2037	}
		2038
		2039	void
		2040	ev_stat_start (EV_P_ ev_stat *w)
		2041	{
		2042	if (expect_false (ev_is_active (w)))
		2043	return;
		2044
		2045	/* since we use memcmp, we need to clear any padding data etc. */
		2046	memset (&w->prev, 0, sizeof (ev_statdata));
		2047	memset (&w->attr, 0, sizeof (ev_statdata));
		2048
		2049	ev_stat_stat (EV_A_ w);
		2050
		2051	if (w->interval < MIN_STAT_INTERVAL)
		2052	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2053
		2054	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2055	ev_set_priority (&w->timer, ev_priority (w));
		2056
		2057	#if EV_USE_INOTIFY
		2058	infy_init (EV_A);
		2059
		2060	if (fs_fd >= 0)
		2061	infy_add (EV_A_ w);
		2062	else
		2063	#endif
		2064	ev_timer_start (EV_A_ &w->timer);
		2065
		2066	ev_start (EV_A_ (W)w, 1);
		2067	}
		2068
		2069	void
		2070	ev_stat_stop (EV_P_ ev_stat *w)
		2071	{
		2072	clear_pending (EV_A_ (W)w);
		2073	if (expect_false (!ev_is_active (w)))
		2074	return;
		2075
		2076	#if EV_USE_INOTIFY
		2077	infy_del (EV_A_ w);
		2078	#endif
		2079	ev_timer_stop (EV_A_ &w->timer);
		2080
		2081	ev_stop (EV_A_ (W)w);
		2082	}
		2083	#endif
		2084
		2085	#if EV_IDLE_ENABLE
		2086	void
		2087	ev_idle_start (EV_P_ ev_idle *w)
		2088	{
		2089	if (expect_false (ev_is_active (w)))
		2090	return;
		2091
		2092	pri_adjust (EV_A_ (W)w);
		2093
		2094	{
		2095	int active = ++idlecnt [ABSPRI (w)];
		2096
		2097	++idleall;
		2098	ev_start (EV_A_ (W)w, active);
		2099
		2100	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2101	idles [ABSPRI (w)][active - 1] = w;
		2102	}
		2103	}
		2104
		2105	void
		2106	ev_idle_stop (EV_P_ ev_idle *w)
		2107	{
		2108	clear_pending (EV_A_ (W)w);
		2109	if (expect_false (!ev_is_active (w)))
		2110	return;
		2111
		2112	{
		2113	int active = ((W)w)->active;
		2114
		2115	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2116	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2117
		2118	ev_stop (EV_A_ (W)w);
		2119	--idleall;
		2120	}
		2121	}
		2122	#endif
		2123
		2124	void
		2125	ev_prepare_start (EV_P_ ev_prepare *w)
		2126	{
		2127	if (expect_false (ev_is_active (w)))
		2128	return;
		2129
		2130	ev_start (EV_A_ (W)w, ++preparecnt);
		2131	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2132	prepares [preparecnt - 1] = w;
		2133	}
		2134
		2135	void
		2136	ev_prepare_stop (EV_P_ ev_prepare *w)
		2137	{
		2138	clear_pending (EV_A_ (W)w);
		2139	if (expect_false (!ev_is_active (w)))
		2140	return;
		2141
		2142	{
		2143	int active = ((W)w)->active;
		2144	prepares [active - 1] = prepares [--preparecnt];
		2145	((W)prepares [active - 1])->active = active;
		2146	}
		2147
		2148	ev_stop (EV_A_ (W)w);
		2149	}
		2150
		2151	void
		2152	ev_check_start (EV_P_ ev_check *w)
		2153	{
		2154	if (expect_false (ev_is_active (w)))
		2155	return;
		2156
		2157	ev_start (EV_A_ (W)w, ++checkcnt);
		2158	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2159	checks [checkcnt - 1] = w;
		2160	}
		2161
		2162	void
		2163	ev_check_stop (EV_P_ ev_check *w)
		2164	{
		2165	clear_pending (EV_A_ (W)w);
		2166	if (expect_false (!ev_is_active (w)))
		2167	return;
		2168
		2169	{
		2170	int active = ((W)w)->active;
		2171	checks [active - 1] = checks [--checkcnt];
		2172	((W)checks [active - 1])->active = active;
		2173	}
		2174
		2175	ev_stop (EV_A_ (W)w);
		2176	}
		2177
		2178	#if EV_EMBED_ENABLE
		2179	void noinline
		2180	ev_embed_sweep (EV_P_ ev_embed *w)
		2181	{
1682	ev_loop (w->loop, EVLOOP_NONBLOCK);	2182	ev_loop (w->loop, EVLOOP_NONBLOCK);
1683	}	2183	}
1684		2184
		2185	static void
		2186	embed_cb (EV_P_ ev_io *io, int revents)
		2187	{
		2188	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2189
		2190	if (ev_cb (w))
		2191	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2192	else
		2193	ev_embed_sweep (loop, w);
		2194	}
		2195
1685	void	2196	void
1686	ev_embed_start (EV_P_ struct ev_embed *w)	2197	ev_embed_start (EV_P_ ev_embed *w)
1687	{	2198	{
1688	if (expect_false (ev_is_active (w)))	2199	if (expect_false (ev_is_active (w)))
1689	return;	2200	return;
1690		2201
1691	{	2202	{
1692	struct ev_loop *loop = w->loop;	2203	struct ev_loop *loop = w->loop;
1693	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2204	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1694	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2205	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1695	}	2206	}
1696		2207
		2208	ev_set_priority (&w->io, ev_priority (w));
1697	ev_io_start (EV_A_ &w->io);	2209	ev_io_start (EV_A_ &w->io);
		2210
1698	ev_start (EV_A_ (W)w, 1);	2211	ev_start (EV_A_ (W)w, 1);
1699	}	2212	}
1700		2213
1701	void	2214	void
1702	ev_embed_stop (EV_P_ struct ev_embed *w)	2215	ev_embed_stop (EV_P_ ev_embed *w)
1703	{	2216	{
1704	ev_clear_pending (EV_A_ (W)w);	2217	clear_pending (EV_A_ (W)w);
1705	if (expect_false (!ev_is_active (w)))	2218	if (expect_false (!ev_is_active (w)))
1706	return;	2219	return;
1707		2220
1708	ev_io_stop (EV_A_ &w->io);	2221	ev_io_stop (EV_A_ &w->io);
		2222
1709	ev_stop (EV_A_ (W)w);	2223	ev_stop (EV_A_ (W)w);
1710	}	2224	}
1711	#endif	2225	#endif
1712		2226
		2227	#if EV_FORK_ENABLE
		2228	void
		2229	ev_fork_start (EV_P_ ev_fork *w)
		2230	{
		2231	if (expect_false (ev_is_active (w)))
		2232	return;
		2233
		2234	ev_start (EV_A_ (W)w, ++forkcnt);
		2235	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2236	forks [forkcnt - 1] = w;
		2237	}
		2238
		2239	void
		2240	ev_fork_stop (EV_P_ ev_fork *w)
		2241	{
		2242	clear_pending (EV_A_ (W)w);
		2243	if (expect_false (!ev_is_active (w)))
		2244	return;
		2245
		2246	{
		2247	int active = ((W)w)->active;
		2248	forks [active - 1] = forks [--forkcnt];
		2249	((W)forks [active - 1])->active = active;
		2250	}
		2251
		2252	ev_stop (EV_A_ (W)w);
		2253	}
		2254	#endif
		2255
1713	/*****************************************************************************/	2256	/*****************************************************************************/
1714		2257
1715	struct ev_once	2258	struct ev_once
1716	{	2259	{
1717	struct ev_io io;	2260	ev_io io;
1718	struct ev_timer to;	2261	ev_timer to;
1719	void (*cb)(int revents, void *arg);	2262	void (*cb)(int revents, void *arg);
1720	void *arg;	2263	void *arg;
1721	};	2264	};
1722		2265
1723	static void	2266	static void
…		…
1732		2275
1733	cb (revents, arg);	2276	cb (revents, arg);
1734	}	2277	}
1735		2278
1736	static void	2279	static void
1737	once_cb_io (EV_P_ struct ev_io *w, int revents)	2280	once_cb_io (EV_P_ ev_io *w, int revents)
1738	{	2281	{
1739	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2282	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1740	}	2283	}
1741		2284
1742	static void	2285	static void
1743	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2286	once_cb_to (EV_P_ ev_timer *w, int revents)
1744	{	2287	{
1745	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2288	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1746	}	2289	}
1747		2290
1748	void	2291	void

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