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Comparing libev/ev.c (file contents):
Revision 1.127 by root, Sun Nov 18 02:17:57 2007 UTC vs.
Revision 1.193 by root, Sat Dec 22 05:47:58 2007 UTC

…		…
32	#ifdef __cplusplus	32	#ifdef __cplusplus
33	extern "C" {	33	extern "C" {
34	#endif	34	#endif
35		35
36	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
37	# include "config.h"	40	# include "config.h"
		41	# endif
38		42
39	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
40	# ifndef EV_USE_MONOTONIC	44	# ifndef EV_USE_MONOTONIC
41	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
42	# endif	46	# endif
…		…
47	# ifndef EV_USE_MONOTONIC	51	# ifndef EV_USE_MONOTONIC
48	# define EV_USE_MONOTONIC 0	52	# define EV_USE_MONOTONIC 0
49	# endif	53	# endif
50	# ifndef EV_USE_REALTIME	54	# ifndef EV_USE_REALTIME
51	# define EV_USE_REALTIME 0	55	# define EV_USE_REALTIME 0
		56	# endif
		57	# endif
		58
		59	# ifndef EV_USE_NANOSLEEP
		60	# if HAVE_NANOSLEEP
		61	# define EV_USE_NANOSLEEP 1
		62	# else
		63	# define EV_USE_NANOSLEEP 0
52	# endif	64	# endif
53	# endif	65	# endif
54		66
55	# ifndef EV_USE_SELECT	67	# ifndef EV_USE_SELECT
56	# if HAVE_SELECT && HAVE_SYS_SELECT_H	68	# if HAVE_SELECT && HAVE_SYS_SELECT_H
…		…
90	# else	102	# else
91	# define EV_USE_PORT 0	103	# define EV_USE_PORT 0
92	# endif	104	# endif
93	# endif	105	# endif
94		106
		107	# ifndef EV_USE_INOTIFY
		108	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		109	# define EV_USE_INOTIFY 1
		110	# else
		111	# define EV_USE_INOTIFY 0
		112	# endif
		113	# endif
		114
95	#endif	115	#endif
96		116
97	#include <math.h>	117	#include <math.h>
98	#include <stdlib.h>	118	#include <stdlib.h>
99	#include <fcntl.h>	119	#include <fcntl.h>
…		…
106	#include <sys/types.h>	126	#include <sys/types.h>
107	#include <time.h>	127	#include <time.h>
108		128
109	#include <signal.h>	129	#include <signal.h>
110		130
		131	#ifdef EV_H
		132	# include EV_H
		133	#else
		134	# include "ev.h"
		135	#endif
		136
111	#ifndef _WIN32	137	#ifndef _WIN32
112	# include <unistd.h>
113	# include <sys/time.h>	138	# include <sys/time.h>
114	# include <sys/wait.h>	139	# include <sys/wait.h>
		140	# include <unistd.h>
115	#else	141	#else
116	# define WIN32_LEAN_AND_MEAN	142	# define WIN32_LEAN_AND_MEAN
117	# include <windows.h>	143	# include <windows.h>
118	# ifndef EV_SELECT_IS_WINSOCKET	144	# ifndef EV_SELECT_IS_WINSOCKET
119	# define EV_SELECT_IS_WINSOCKET 1	145	# define EV_SELECT_IS_WINSOCKET 1
…		…
128		154
129	#ifndef EV_USE_REALTIME	155	#ifndef EV_USE_REALTIME
130	# define EV_USE_REALTIME 0	156	# define EV_USE_REALTIME 0
131	#endif	157	#endif
132		158
		159	#ifndef EV_USE_NANOSLEEP
		160	# define EV_USE_NANOSLEEP 0
		161	#endif
		162
133	#ifndef EV_USE_SELECT	163	#ifndef EV_USE_SELECT
134	# define EV_USE_SELECT 1	164	# define EV_USE_SELECT 1
135	#endif	165	#endif
136		166
137	#ifndef EV_USE_POLL	167	#ifndef EV_USE_POLL
…		…
152		182
153	#ifndef EV_USE_PORT	183	#ifndef EV_USE_PORT
154	# define EV_USE_PORT 0	184	# define EV_USE_PORT 0
155	#endif	185	#endif
156		186
		187	#ifndef EV_USE_INOTIFY
		188	# define EV_USE_INOTIFY 0
		189	#endif
		190
		191	#ifndef EV_PID_HASHSIZE
		192	# if EV_MINIMAL
		193	# define EV_PID_HASHSIZE 1
		194	# else
		195	# define EV_PID_HASHSIZE 16
		196	# endif
		197	#endif
		198
		199	#ifndef EV_INOTIFY_HASHSIZE
		200	# if EV_MINIMAL
		201	# define EV_INOTIFY_HASHSIZE 1
		202	# else
		203	# define EV_INOTIFY_HASHSIZE 16
		204	# endif
		205	#endif
		206
157	/**/	207	/**/
158
159	/* darwin simply cannot be helped */
160	#ifdef __APPLE__
161	# undef EV_USE_POLL
162	# undef EV_USE_KQUEUE
163	#endif
164		208
165	#ifndef CLOCK_MONOTONIC	209	#ifndef CLOCK_MONOTONIC
166	# undef EV_USE_MONOTONIC	210	# undef EV_USE_MONOTONIC
167	# define EV_USE_MONOTONIC 0	211	# define EV_USE_MONOTONIC 0
168	#endif	212	#endif
…		…
170	#ifndef CLOCK_REALTIME	214	#ifndef CLOCK_REALTIME
171	# undef EV_USE_REALTIME	215	# undef EV_USE_REALTIME
172	# define EV_USE_REALTIME 0	216	# define EV_USE_REALTIME 0
173	#endif	217	#endif
174		218
		219	#if !EV_STAT_ENABLE
		220	# undef EV_USE_INOTIFY
		221	# define EV_USE_INOTIFY 0
		222	#endif
		223
		224	#if !EV_USE_NANOSLEEP
		225	# ifndef _WIN32
		226	# include <sys/select.h>
		227	# endif
		228	#endif
		229
		230	#if EV_USE_INOTIFY
		231	# include <sys/inotify.h>
		232	#endif
		233
175	#if EV_SELECT_IS_WINSOCKET	234	#if EV_SELECT_IS_WINSOCKET
176	# include <winsock.h>	235	# include <winsock.h>
177	#endif	236	#endif
178		237
179	/**/	238	/**/
180		239
		240	/*
		241	* This is used to avoid floating point rounding problems.
		242	* It is added to ev_rt_now when scheduling periodics
		243	* to ensure progress, time-wise, even when rounding
		244	* errors are against us.
		245	* This value is good at least till the year 4000.
		246	* Better solutions welcome.
		247	*/
		248	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
		249
181	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	250	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
182	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	251	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
183	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
184	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */	252	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
185		253
186	#ifdef EV_H
187	# include EV_H
188	#else
189	# include "ev.h"
190	#endif
191
192	#if __GNUC__ >= 3	254	#if __GNUC__ >= 4
193	# define expect(expr,value) __builtin_expect ((expr),(value))	255	# define expect(expr,value) __builtin_expect ((expr),(value))
194	# define inline static inline	256	# define noinline __attribute__ ((noinline))
195	#else	257	#else
196	# define expect(expr,value) (expr)	258	# define expect(expr,value) (expr)
197	# define inline static	259	# define noinline
		260	# if __STDC_VERSION__ < 199901L
		261	# define inline
		262	# endif
198	#endif	263	#endif
199		264
200	#define expect_false(expr) expect ((expr) != 0, 0)	265	#define expect_false(expr) expect ((expr) != 0, 0)
201	#define expect_true(expr) expect ((expr) != 0, 1)	266	#define expect_true(expr) expect ((expr) != 0, 1)
		267	#define inline_size static inline
		268
		269	#if EV_MINIMAL
		270	# define inline_speed static noinline
		271	#else
		272	# define inline_speed static inline
		273	#endif
202		274
203	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	275	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
204	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	276	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
205		277
206	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	278	#define EMPTY /* required for microsofts broken pseudo-c compiler */
207	#define EMPTY2(a,b) /* used to suppress some warnings */	279	#define EMPTY2(a,b) /* used to suppress some warnings */
208		280
209	typedef struct ev_watcher *W;	281	typedef ev_watcher *W;
210	typedef struct ev_watcher_list *WL;	282	typedef ev_watcher_list *WL;
211	typedef struct ev_watcher_time *WT;	283	typedef ev_watcher_time *WT;
212		284
213	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	285	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
214		286
215	#ifdef _WIN32	287	#ifdef _WIN32
216	# include "ev_win32.c"	288	# include "ev_win32.c"
…		…
218		290
219	/*****************************************************************************/	291	/*****************************************************************************/
220		292
221	static void (*syserr_cb)(const char *msg);	293	static void (*syserr_cb)(const char *msg);
222		294
		295	void
223	void ev_set_syserr_cb (void (*cb)(const char *msg))	296	ev_set_syserr_cb (void (*cb)(const char *msg))
224	{	297	{
225	syserr_cb = cb;	298	syserr_cb = cb;
226	}	299	}
227		300
228	static void	301	static void noinline
229	syserr (const char *msg)	302	syserr (const char *msg)
230	{	303	{
231	if (!msg)	304	if (!msg)
232	msg = "(libev) system error";	305	msg = "(libev) system error";
233		306
…		…
240	}	313	}
241	}	314	}
242		315
243	static void *(*alloc)(void *ptr, long size);	316	static void *(*alloc)(void *ptr, long size);
244		317
		318	void
245	void ev_set_allocator (void *(*cb)(void *ptr, long size))	319	ev_set_allocator (void *(*cb)(void *ptr, long size))
246	{	320	{
247	alloc = cb;	321	alloc = cb;
248	}	322	}
249		323
250	static void *	324	inline_speed void *
251	ev_realloc (void *ptr, long size)	325	ev_realloc (void *ptr, long size)
252	{	326	{
253	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	327	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
254		328
255	if (!ptr && size)	329	if (!ptr && size)
…		…
279	typedef struct	353	typedef struct
280	{	354	{
281	W w;	355	W w;
282	int events;	356	int events;
283	} ANPENDING;	357	} ANPENDING;
		358
		359	#if EV_USE_INOTIFY
		360	typedef struct
		361	{
		362	WL head;
		363	} ANFS;
		364	#endif
284		365
285	#if EV_MULTIPLICITY	366	#if EV_MULTIPLICITY
286		367
287	struct ev_loop	368	struct ev_loop
288	{	369	{
…		…
322	gettimeofday (&tv, 0);	403	gettimeofday (&tv, 0);
323	return tv.tv_sec + tv.tv_usec * 1e-6;	404	return tv.tv_sec + tv.tv_usec * 1e-6;
324	#endif	405	#endif
325	}	406	}
326		407
327	inline ev_tstamp	408	ev_tstamp inline_size
328	get_clock (void)	409	get_clock (void)
329	{	410	{
330	#if EV_USE_MONOTONIC	411	#if EV_USE_MONOTONIC
331	if (expect_true (have_monotonic))	412	if (expect_true (have_monotonic))
332	{	413	{
…		…
345	{	426	{
346	return ev_rt_now;	427	return ev_rt_now;
347	}	428	}
348	#endif	429	#endif
349		430
350	#define array_roundsize(type,n) (((n) | 4) & ~3)	431	void
		432	ev_sleep (ev_tstamp delay)
		433	{
		434	if (delay > 0.)
		435	{
		436	#if EV_USE_NANOSLEEP
		437	struct timespec ts;
		438
		439	ts.tv_sec = (time_t)delay;
		440	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		441
		442	nanosleep (&ts, 0);
		443	#elif defined(_WIN32)
		444	Sleep (delay * 1e3);
		445	#else
		446	struct timeval tv;
		447
		448	tv.tv_sec = (time_t)delay;
		449	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		450
		451	select (0, 0, 0, 0, &tv);
		452	#endif
		453	}
		454	}
		455
		456	/*****************************************************************************/
		457
		458	int inline_size
		459	array_nextsize (int elem, int cur, int cnt)
		460	{
		461	int ncur = cur + 1;
		462
		463	do
		464	ncur <<= 1;
		465	while (cnt > ncur);
		466
		467	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		468	if (elem * ncur > 4096)
		469	{
		470	ncur *= elem;
		471	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		472	ncur = ncur - sizeof (void *) * 4;
		473	ncur /= elem;
		474	}
		475
		476	return ncur;
		477	}
		478
		479	static noinline void *
		480	array_realloc (int elem, void *base, int *cur, int cnt)
		481	{
		482	*cur = array_nextsize (elem, *cur, cnt);
		483	return ev_realloc (base, elem * *cur);
		484	}
351		485
352	#define array_needsize(type,base,cur,cnt,init) \	486	#define array_needsize(type,base,cur,cnt,init) \
353	if (expect_false ((cnt) > cur)) \	487	if (expect_false ((cnt) > (cur))) \
354	{ \	488	{ \
355	int newcnt = cur; \	489	int ocur_ = (cur); \
356	do \	490	(base) = (type *)array_realloc \
357	{ \	491	(sizeof (type), (base), &(cur), (cnt)); \
358	newcnt = array_roundsize (type, newcnt << 1); \	492	init ((base) + (ocur_), (cur) - ocur_); \
359	} \
360	while ((cnt) > newcnt); \
361	\
362	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
363	init (base + cur, newcnt - cur); \
364	cur = newcnt; \
365	}	493	}
366		494
		495	#if 0
367	#define array_slim(type,stem) \	496	#define array_slim(type,stem) \
368	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	497	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
369	{ \	498	{ \
370	stem ## max = array_roundsize (stem ## cnt >> 1); \	499	stem ## max = array_roundsize (stem ## cnt >> 1); \
371	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	500	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
372	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	501	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
373	}	502	}
		503	#endif
374		504
375	#define array_free(stem, idx) \	505	#define array_free(stem, idx) \
376	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	506	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
377		507
378	/*****************************************************************************/	508	/*****************************************************************************/
379		509
380	static void	510	void noinline
		511	ev_feed_event (EV_P_ void *w, int revents)
		512	{
		513	W w_ = (W)w;
		514	int pri = ABSPRI (w_);
		515
		516	if (expect_false (w_->pending))
		517	pendings [pri][w_->pending - 1].events |= revents;
		518	else
		519	{
		520	w_->pending = ++pendingcnt [pri];
		521	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		522	pendings [pri][w_->pending - 1].w = w_;
		523	pendings [pri][w_->pending - 1].events = revents;
		524	}
		525	}
		526
		527	void inline_speed
		528	queue_events (EV_P_ W *events, int eventcnt, int type)
		529	{
		530	int i;
		531
		532	for (i = 0; i < eventcnt; ++i)
		533	ev_feed_event (EV_A_ events [i], type);
		534	}
		535
		536	/*****************************************************************************/
		537
		538	void inline_size
381	anfds_init (ANFD *base, int count)	539	anfds_init (ANFD *base, int count)
382	{	540	{
383	while (count--)	541	while (count--)
384	{	542	{
385	base->head = 0;	543	base->head = 0;
…		…
388		546
389	++base;	547	++base;
390	}	548	}
391	}	549	}
392		550
393	void	551	void inline_speed
394	ev_feed_event (EV_P_ void *w, int revents)
395	{
396	W w_ = (W)w;
397
398	if (expect_false (w_->pending))
399	{
400	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
401	return;
402	}
403
404	w_->pending = ++pendingcnt [ABSPRI (w_)];
405	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
406	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
407	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
408	}
409
410	static void
411	queue_events (EV_P_ W *events, int eventcnt, int type)
412	{
413	int i;
414
415	for (i = 0; i < eventcnt; ++i)
416	ev_feed_event (EV_A_ events [i], type);
417	}
418
419	inline void
420	fd_event (EV_P_ int fd, int revents)	552	fd_event (EV_P_ int fd, int revents)
421	{	553	{
422	ANFD *anfd = anfds + fd;	554	ANFD *anfd = anfds + fd;
423	struct ev_io *w;	555	ev_io *w;
424		556
425	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	557	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
426	{	558	{
427	int ev = w->events & revents;	559	int ev = w->events & revents;
428		560
429	if (ev)	561	if (ev)
430	ev_feed_event (EV_A_ (W)w, ev);	562	ev_feed_event (EV_A_ (W)w, ev);
…		…
432	}	564	}
433		565
434	void	566	void
435	ev_feed_fd_event (EV_P_ int fd, int revents)	567	ev_feed_fd_event (EV_P_ int fd, int revents)
436	{	568	{
		569	if (fd >= 0 && fd < anfdmax)
437	fd_event (EV_A_ fd, revents);	570	fd_event (EV_A_ fd, revents);
438	}	571	}
439		572
440	/*****************************************************************************/	573	void inline_size
441
442	inline void
443	fd_reify (EV_P)	574	fd_reify (EV_P)
444	{	575	{
445	int i;	576	int i;
446		577
447	for (i = 0; i < fdchangecnt; ++i)	578	for (i = 0; i < fdchangecnt; ++i)
448	{	579	{
449	int fd = fdchanges [i];	580	int fd = fdchanges [i];
450	ANFD *anfd = anfds + fd;	581	ANFD *anfd = anfds + fd;
451	struct ev_io *w;	582	ev_io *w;
452		583
453	int events = 0;	584	unsigned char events = 0;
454		585
455	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	586	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
456	events |= w->events;	587	events |= (unsigned char)w->events;
457		588
458	#if EV_SELECT_IS_WINSOCKET	589	#if EV_SELECT_IS_WINSOCKET
459	if (events)	590	if (events)
460	{	591	{
461	unsigned long argp;	592	unsigned long argp;
462	anfd->handle = _get_osfhandle (fd);	593	anfd->handle = _get_osfhandle (fd);
463	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	594	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
464	}	595	}
465	#endif	596	#endif
466		597
		598	{
		599	unsigned char o_events = anfd->events;
		600	unsigned char o_reify = anfd->reify;
		601
467	anfd->reify = 0;	602	anfd->reify = 0;
468
469	method_modify (EV_A_ fd, anfd->events, events);
470	anfd->events = events;	603	anfd->events = events;
		604
		605	if (o_events != events || o_reify & EV_IOFDSET)
		606	backend_modify (EV_A_ fd, o_events, events);
		607	}
471	}	608	}
472		609
473	fdchangecnt = 0;	610	fdchangecnt = 0;
474	}	611	}
475		612
476	static void	613	void inline_size
477	fd_change (EV_P_ int fd)	614	fd_change (EV_P_ int fd, int flags)
478	{	615	{
479	if (expect_false (anfds [fd].reify))	616	unsigned char reify = anfds [fd].reify;
480	return;
481
482	anfds [fd].reify = 1;	617	anfds [fd].reify |= flags;
483		618
		619	if (expect_true (!reify))
		620	{
484	++fdchangecnt;	621	++fdchangecnt;
485	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	622	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
486	fdchanges [fdchangecnt - 1] = fd;	623	fdchanges [fdchangecnt - 1] = fd;
		624	}
487	}	625	}
488		626
489	static void	627	void inline_speed
490	fd_kill (EV_P_ int fd)	628	fd_kill (EV_P_ int fd)
491	{	629	{
492	struct ev_io *w;	630	ev_io *w;
493		631
494	while ((w = (struct ev_io *)anfds [fd].head))	632	while ((w = (ev_io *)anfds [fd].head))
495	{	633	{
496	ev_io_stop (EV_A_ w);	634	ev_io_stop (EV_A_ w);
497	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	635	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
498	}	636	}
499	}	637	}
500		638
501	inline int	639	int inline_size
502	fd_valid (int fd)	640	fd_valid (int fd)
503	{	641	{
504	#ifdef _WIN32	642	#ifdef _WIN32
505	return _get_osfhandle (fd) != -1;	643	return _get_osfhandle (fd) != -1;
506	#else	644	#else
507	return fcntl (fd, F_GETFD) != -1;	645	return fcntl (fd, F_GETFD) != -1;
508	#endif	646	#endif
509	}	647	}
510		648
511	/* called on EBADF to verify fds */	649	/* called on EBADF to verify fds */
512	static void	650	static void noinline
513	fd_ebadf (EV_P)	651	fd_ebadf (EV_P)
514	{	652	{
515	int fd;	653	int fd;
516		654
517	for (fd = 0; fd < anfdmax; ++fd)	655	for (fd = 0; fd < anfdmax; ++fd)
…		…
519	if (!fd_valid (fd) == -1 && errno == EBADF)	657	if (!fd_valid (fd) == -1 && errno == EBADF)
520	fd_kill (EV_A_ fd);	658	fd_kill (EV_A_ fd);
521	}	659	}
522		660
523	/* called on ENOMEM in select/poll to kill some fds and retry */	661	/* called on ENOMEM in select/poll to kill some fds and retry */
524	static void	662	static void noinline
525	fd_enomem (EV_P)	663	fd_enomem (EV_P)
526	{	664	{
527	int fd;	665	int fd;
528		666
529	for (fd = anfdmax; fd--; )	667	for (fd = anfdmax; fd--; )
…		…
532	fd_kill (EV_A_ fd);	670	fd_kill (EV_A_ fd);
533	return;	671	return;
534	}	672	}
535	}	673	}
536		674
537	/* usually called after fork if method needs to re-arm all fds from scratch */	675	/* usually called after fork if backend needs to re-arm all fds from scratch */
538	static void	676	static void noinline
539	fd_rearm_all (EV_P)	677	fd_rearm_all (EV_P)
540	{	678	{
541	int fd;	679	int fd;
542		680
543	/* this should be highly optimised to not do anything but set a flag */
544	for (fd = 0; fd < anfdmax; ++fd)	681	for (fd = 0; fd < anfdmax; ++fd)
545	if (anfds [fd].events)	682	if (anfds [fd].events)
546	{	683	{
547	anfds [fd].events = 0;	684	anfds [fd].events = 0;
548	fd_change (EV_A_ fd);	685	fd_change (EV_A_ fd, EV_IOFDSET | 1);
549	}	686	}
550	}	687	}
551		688
552	/*****************************************************************************/	689	/*****************************************************************************/
553		690
554	static void	691	void inline_speed
555	upheap (WT *heap, int k)	692	upheap (WT *heap, int k)
556	{	693	{
557	WT w = heap [k];	694	WT w = heap [k];
558		695
559	while (k && heap [k >> 1]->at > w->at)	696	while (k)
560	{	697	{
		698	int p = (k - 1) >> 1;
		699
		700	if (heap [p]->at <= w->at)
		701	break;
		702
561	heap [k] = heap [k >> 1];	703	heap [k] = heap [p];
562	((W)heap [k])->active = k + 1;	704	((W)heap [k])->active = k + 1;
563	k >>= 1;	705	k = p;
564	}	706	}
565		707
566	heap [k] = w;	708	heap [k] = w;
567	((W)heap [k])->active = k + 1;	709	((W)heap [k])->active = k + 1;
568
569	}	710	}
570		711
571	static void	712	void inline_speed
572	downheap (WT *heap, int N, int k)	713	downheap (WT *heap, int N, int k)
573	{	714	{
574	WT w = heap [k];	715	WT w = heap [k];
575		716
576	while (k < (N >> 1))	717	for (;;)
577	{	718	{
578	int j = k << 1;	719	int c = (k << 1) + 1;
579		720
580	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	721	if (c >= N)
581	++j;
582
583	if (w->at <= heap [j]->at)
584	break;	722	break;
585		723
		724	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		725	? 1 : 0;
		726
		727	if (w->at <= heap [c]->at)
		728	break;
		729
586	heap [k] = heap [j];	730	heap [k] = heap [c];
587	((W)heap [k])->active = k + 1;	731	((W)heap [k])->active = k + 1;
		732
588	k = j;	733	k = c;
589	}	734	}
590		735
591	heap [k] = w;	736	heap [k] = w;
592	((W)heap [k])->active = k + 1;	737	((W)heap [k])->active = k + 1;
593	}	738	}
594		739
595	inline void	740	void inline_size
596	adjustheap (WT *heap, int N, int k)	741	adjustheap (WT *heap, int N, int k)
597	{	742	{
598	upheap (heap, k);	743	upheap (heap, k);
599	downheap (heap, N, k);	744	downheap (heap, N, k);
600	}	745	}
…		…
610	static ANSIG *signals;	755	static ANSIG *signals;
611	static int signalmax;	756	static int signalmax;
612		757
613	static int sigpipe [2];	758	static int sigpipe [2];
614	static sig_atomic_t volatile gotsig;	759	static sig_atomic_t volatile gotsig;
615	static struct ev_io sigev;	760	static ev_io sigev;
616		761
617	static void	762	void inline_size
618	signals_init (ANSIG *base, int count)	763	signals_init (ANSIG *base, int count)
619	{	764	{
620	while (count--)	765	while (count--)
621	{	766	{
622	base->head = 0;	767	base->head = 0;
…		…
642	write (sigpipe [1], &signum, 1);	787	write (sigpipe [1], &signum, 1);
643	errno = old_errno;	788	errno = old_errno;
644	}	789	}
645	}	790	}
646		791
647	void	792	void noinline
648	ev_feed_signal_event (EV_P_ int signum)	793	ev_feed_signal_event (EV_P_ int signum)
649	{	794	{
650	WL w;	795	WL w;
651		796
652	#if EV_MULTIPLICITY	797	#if EV_MULTIPLICITY
…		…
663	for (w = signals [signum].head; w; w = w->next)	808	for (w = signals [signum].head; w; w = w->next)
664	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	809	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
665	}	810	}
666		811
667	static void	812	static void
668	sigcb (EV_P_ struct ev_io *iow, int revents)	813	sigcb (EV_P_ ev_io *iow, int revents)
669	{	814	{
670	int signum;	815	int signum;
671		816
672	read (sigpipe [0], &revents, 1);	817	read (sigpipe [0], &revents, 1);
673	gotsig = 0;	818	gotsig = 0;
…		…
675	for (signum = signalmax; signum--; )	820	for (signum = signalmax; signum--; )
676	if (signals [signum].gotsig)	821	if (signals [signum].gotsig)
677	ev_feed_signal_event (EV_A_ signum + 1);	822	ev_feed_signal_event (EV_A_ signum + 1);
678	}	823	}
679		824
680	static void	825	void inline_speed
681	fd_intern (int fd)	826	fd_intern (int fd)
682	{	827	{
683	#ifdef _WIN32	828	#ifdef _WIN32
684	int arg = 1;	829	int arg = 1;
685	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	830	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
687	fcntl (fd, F_SETFD, FD_CLOEXEC);	832	fcntl (fd, F_SETFD, FD_CLOEXEC);
688	fcntl (fd, F_SETFL, O_NONBLOCK);	833	fcntl (fd, F_SETFL, O_NONBLOCK);
689	#endif	834	#endif
690	}	835	}
691		836
692	static void	837	static void noinline
693	siginit (EV_P)	838	siginit (EV_P)
694	{	839	{
695	fd_intern (sigpipe [0]);	840	fd_intern (sigpipe [0]);
696	fd_intern (sigpipe [1]);	841	fd_intern (sigpipe [1]);
697		842
…		…
700	ev_unref (EV_A); /* child watcher should not keep loop alive */	845	ev_unref (EV_A); /* child watcher should not keep loop alive */
701	}	846	}
702		847
703	/*****************************************************************************/	848	/*****************************************************************************/
704		849
705	static struct ev_child *childs [PID_HASHSIZE];	850	static WL childs [EV_PID_HASHSIZE];
706		851
707	#ifndef _WIN32	852	#ifndef _WIN32
708		853
709	static struct ev_signal childev;	854	static ev_signal childev;
		855
		856	void inline_speed
		857	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		858	{
		859	ev_child *w;
		860
		861	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		862	if (w->pid == pid || !w->pid)
		863	{
		864	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		865	w->rpid = pid;
		866	w->rstatus = status;
		867	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		868	}
		869	}
710		870
711	#ifndef WCONTINUED	871	#ifndef WCONTINUED
712	# define WCONTINUED 0	872	# define WCONTINUED 0
713	#endif	873	#endif
714		874
715	static void	875	static void
716	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
717	{
718	struct ev_child *w;
719
720	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
721	if (w->pid == pid || !w->pid)
722	{
723	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
724	w->rpid = pid;
725	w->rstatus = status;
726	ev_feed_event (EV_A_ (W)w, EV_CHILD);
727	}
728	}
729
730	static void
731	childcb (EV_P_ struct ev_signal *sw, int revents)	876	childcb (EV_P_ ev_signal *sw, int revents)
732	{	877	{
733	int pid, status;	878	int pid, status;
734		879
		880	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
735	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	881	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
736	{	882	if (!WCONTINUED
		883	|| errno != EINVAL
		884	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		885	return;
		886
737	/* make sure we are called again until all childs have been reaped */	887	/* make sure we are called again until all childs have been reaped */
		888	/* we need to do it this way so that the callback gets called before we continue */
738	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	889	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
739		890
740	child_reap (EV_A_ sw, pid, pid, status);	891	child_reap (EV_A_ sw, pid, pid, status);
		892	if (EV_PID_HASHSIZE > 1)
741	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	893	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
742	}
743	}	894	}
744		895
745	#endif	896	#endif
746		897
747	/*****************************************************************************/	898	/*****************************************************************************/
…		…
773	{	924	{
774	return EV_VERSION_MINOR;	925	return EV_VERSION_MINOR;
775	}	926	}
776		927
777	/* return true if we are running with elevated privileges and should ignore env variables */	928	/* return true if we are running with elevated privileges and should ignore env variables */
778	static int	929	int inline_size
779	enable_secure (void)	930	enable_secure (void)
780	{	931	{
781	#ifdef _WIN32	932	#ifdef _WIN32
782	return 0;	933	return 0;
783	#else	934	#else
…		…
785	|| getgid () != getegid ();	936	|| getgid () != getegid ();
786	#endif	937	#endif
787	}	938	}
788		939
789	unsigned int	940	unsigned int
790	ev_method (EV_P)	941	ev_supported_backends (void)
791	{	942	{
792	return method;	943	unsigned int flags = 0;
793	}
794		944
795	static void	945	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		946	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		947	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		948	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		949	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		950
		951	return flags;
		952	}
		953
		954	unsigned int
		955	ev_recommended_backends (void)
		956	{
		957	unsigned int flags = ev_supported_backends ();
		958
		959	#ifndef __NetBSD__
		960	/* kqueue is borked on everything but netbsd apparently */
		961	/* it usually doesn't work correctly on anything but sockets and pipes */
		962	flags &= ~EVBACKEND_KQUEUE;
		963	#endif
		964	#ifdef __APPLE__
		965	// flags &= ~EVBACKEND_KQUEUE; for documentation
		966	flags &= ~EVBACKEND_POLL;
		967	#endif
		968
		969	return flags;
		970	}
		971
		972	unsigned int
		973	ev_embeddable_backends (void)
		974	{
		975	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		976	return EVBACKEND_KQUEUE
		977	| EVBACKEND_PORT;
		978	}
		979
		980	unsigned int
		981	ev_backend (EV_P)
		982	{
		983	return backend;
		984	}
		985
		986	unsigned int
		987	ev_loop_count (EV_P)
		988	{
		989	return loop_count;
		990	}
		991
		992	void
		993	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		994	{
		995	io_blocktime = interval;
		996	}
		997
		998	void
		999	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1000	{
		1001	timeout_blocktime = interval;
		1002	}
		1003
		1004	static void noinline
796	loop_init (EV_P_ unsigned int flags)	1005	loop_init (EV_P_ unsigned int flags)
797	{	1006	{
798	if (!method)	1007	if (!backend)
799	{	1008	{
800	#if EV_USE_MONOTONIC	1009	#if EV_USE_MONOTONIC
801	{	1010	{
802	struct timespec ts;	1011	struct timespec ts;
803	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1012	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
808	ev_rt_now = ev_time ();	1017	ev_rt_now = ev_time ();
809	mn_now = get_clock ();	1018	mn_now = get_clock ();
810	now_floor = mn_now;	1019	now_floor = mn_now;
811	rtmn_diff = ev_rt_now - mn_now;	1020	rtmn_diff = ev_rt_now - mn_now;
812		1021
813	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))	1022	io_blocktime = 0.;
		1023	timeout_blocktime = 0.;
		1024
		1025	/* pid check not overridable via env */
		1026	#ifndef _WIN32
		1027	if (flags & EVFLAG_FORKCHECK)
		1028	curpid = getpid ();
		1029	#endif
		1030
		1031	if (!(flags & EVFLAG_NOENV)
		1032	&& !enable_secure ()
		1033	&& getenv ("LIBEV_FLAGS"))
814	flags = atoi (getenv ("LIBEV_FLAGS"));	1034	flags = atoi (getenv ("LIBEV_FLAGS"));
815		1035
816	if (!(flags & 0x0000ffff))	1036	if (!(flags & 0x0000ffffUL))
817	flags |= 0x0000ffff;	1037	flags |= ev_recommended_backends ();
818		1038
819	method = 0;	1039	backend = 0;
		1040	backend_fd = -1;
		1041	#if EV_USE_INOTIFY
		1042	fs_fd = -2;
		1043	#endif
		1044
820	#if EV_USE_PORT	1045	#if EV_USE_PORT
821	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);	1046	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
822	#endif	1047	#endif
823	#if EV_USE_KQUEUE	1048	#if EV_USE_KQUEUE
824	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);	1049	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
825	#endif	1050	#endif
826	#if EV_USE_EPOLL	1051	#if EV_USE_EPOLL
827	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);	1052	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
828	#endif	1053	#endif
829	#if EV_USE_POLL	1054	#if EV_USE_POLL
830	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);	1055	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
831	#endif	1056	#endif
832	#if EV_USE_SELECT	1057	#if EV_USE_SELECT
833	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);	1058	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
834	#endif	1059	#endif
835		1060
836	ev_init (&sigev, sigcb);	1061	ev_init (&sigev, sigcb);
837	ev_set_priority (&sigev, EV_MAXPRI);	1062	ev_set_priority (&sigev, EV_MAXPRI);
838	}	1063	}
839	}	1064	}
840		1065
841	static void	1066	static void noinline
842	loop_destroy (EV_P)	1067	loop_destroy (EV_P)
843	{	1068	{
844	int i;	1069	int i;
845		1070
		1071	#if EV_USE_INOTIFY
		1072	if (fs_fd >= 0)
		1073	close (fs_fd);
		1074	#endif
		1075
		1076	if (backend_fd >= 0)
		1077	close (backend_fd);
		1078
846	#if EV_USE_PORT	1079	#if EV_USE_PORT
847	if (method == EVMETHOD_PORT ) port_destroy (EV_A);	1080	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
848	#endif	1081	#endif
849	#if EV_USE_KQUEUE	1082	#if EV_USE_KQUEUE
850	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1083	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
851	#endif	1084	#endif
852	#if EV_USE_EPOLL	1085	#if EV_USE_EPOLL
853	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1086	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
854	#endif	1087	#endif
855	#if EV_USE_POLL	1088	#if EV_USE_POLL
856	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1089	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
857	#endif	1090	#endif
858	#if EV_USE_SELECT	1091	#if EV_USE_SELECT
859	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1092	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
860	#endif	1093	#endif
861		1094
862	for (i = NUMPRI; i--; )	1095	for (i = NUMPRI; i--; )
		1096	{
863	array_free (pending, [i]);	1097	array_free (pending, [i]);
		1098	#if EV_IDLE_ENABLE
		1099	array_free (idle, [i]);
		1100	#endif
		1101	}
		1102
		1103	ev_free (anfds); anfdmax = 0;
864		1104
865	/* have to use the microsoft-never-gets-it-right macro */	1105	/* have to use the microsoft-never-gets-it-right macro */
866	array_free (fdchange, EMPTY0);	1106	array_free (fdchange, EMPTY);
867	array_free (timer, EMPTY0);	1107	array_free (timer, EMPTY);
868	#if EV_PERIODICS	1108	#if EV_PERIODIC_ENABLE
869	array_free (periodic, EMPTY0);	1109	array_free (periodic, EMPTY);
870	#endif	1110	#endif
		1111	#if EV_FORK_ENABLE
871	array_free (idle, EMPTY0);	1112	array_free (fork, EMPTY);
		1113	#endif
872	array_free (prepare, EMPTY0);	1114	array_free (prepare, EMPTY);
873	array_free (check, EMPTY0);	1115	array_free (check, EMPTY);
874		1116
875	method = 0;	1117	backend = 0;
876	}	1118	}
877		1119
878	static void	1120	void inline_size infy_fork (EV_P);
		1121
		1122	void inline_size
879	loop_fork (EV_P)	1123	loop_fork (EV_P)
880	{	1124	{
881	#if EV_USE_PORT	1125	#if EV_USE_PORT
882	if (method == EVMETHOD_PORT ) port_fork (EV_A);	1126	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
883	#endif	1127	#endif
884	#if EV_USE_KQUEUE	1128	#if EV_USE_KQUEUE
885	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1129	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
886	#endif	1130	#endif
887	#if EV_USE_EPOLL	1131	#if EV_USE_EPOLL
888	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1132	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1133	#endif
		1134	#if EV_USE_INOTIFY
		1135	infy_fork (EV_A);
889	#endif	1136	#endif
890		1137
891	if (ev_is_active (&sigev))	1138	if (ev_is_active (&sigev))
892	{	1139	{
893	/* default loop */	1140	/* default loop */
…		…
914		1161
915	memset (loop, 0, sizeof (struct ev_loop));	1162	memset (loop, 0, sizeof (struct ev_loop));
916		1163
917	loop_init (EV_A_ flags);	1164	loop_init (EV_A_ flags);
918		1165
919	if (ev_method (EV_A))	1166	if (ev_backend (EV_A))
920	return loop;	1167	return loop;
921		1168
922	return 0;	1169	return 0;
923	}	1170	}
924		1171
…		…
957	ev_default_loop_ptr = 1;	1204	ev_default_loop_ptr = 1;
958	#endif	1205	#endif
959		1206
960	loop_init (EV_A_ flags);	1207	loop_init (EV_A_ flags);
961		1208
962	if (ev_method (EV_A))	1209	if (ev_backend (EV_A))
963	{	1210	{
964	siginit (EV_A);	1211	siginit (EV_A);
965		1212
966	#ifndef _WIN32	1213	#ifndef _WIN32
967	ev_signal_init (&childev, childcb, SIGCHLD);	1214	ev_signal_init (&childev, childcb, SIGCHLD);
…		…
1003	{	1250	{
1004	#if EV_MULTIPLICITY	1251	#if EV_MULTIPLICITY
1005	struct ev_loop *loop = ev_default_loop_ptr;	1252	struct ev_loop *loop = ev_default_loop_ptr;
1006	#endif	1253	#endif
1007		1254
1008	if (method)	1255	if (backend)
1009	postfork = 1;	1256	postfork = 1;
1010	}	1257	}
1011		1258
1012	/*****************************************************************************/	1259	/*****************************************************************************/
1013		1260
1014	static int	1261	void
1015	any_pending (EV_P)	1262	ev_invoke (EV_P_ void *w, int revents)
1016	{	1263	{
1017	int pri;	1264	EV_CB_INVOKE ((W)w, revents);
1018
1019	for (pri = NUMPRI; pri--; )
1020	if (pendingcnt [pri])
1021	return 1;
1022
1023	return 0;
1024	}	1265	}
1025		1266
1026	inline void	1267	void inline_speed
1027	call_pending (EV_P)	1268	call_pending (EV_P)
1028	{	1269	{
1029	int pri;	1270	int pri;
1030		1271
1031	for (pri = NUMPRI; pri--; )	1272	for (pri = NUMPRI; pri--; )
…		…
1033	{	1274	{
1034	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1275	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1035		1276
1036	if (expect_true (p->w))	1277	if (expect_true (p->w))
1037	{	1278	{
		1279	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1280
1038	p->w->pending = 0;	1281	p->w->pending = 0;
1039	EV_CB_INVOKE (p->w, p->events);	1282	EV_CB_INVOKE (p->w, p->events);
1040	}	1283	}
1041	}	1284	}
1042	}	1285	}
1043		1286
1044	inline void	1287	void inline_size
1045	timers_reify (EV_P)	1288	timers_reify (EV_P)
1046	{	1289	{
1047	while (timercnt && ((WT)timers [0])->at <= mn_now)	1290	while (timercnt && ((WT)timers [0])->at <= mn_now)
1048	{	1291	{
1049	struct ev_timer *w = timers [0];	1292	ev_timer *w = (ev_timer *)timers [0];
1050		1293
1051	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1294	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1052		1295
1053	/* first reschedule or stop timer */	1296	/* first reschedule or stop timer */
1054	if (w->repeat)	1297	if (w->repeat)
1055	{	1298	{
1056	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1299	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1057		1300
1058	((WT)w)->at += w->repeat;	1301	((WT)w)->at += w->repeat;
1059	if (((WT)w)->at < mn_now)	1302	if (((WT)w)->at < mn_now)
1060	((WT)w)->at = mn_now;	1303	((WT)w)->at = mn_now;
1061		1304
1062	downheap ((WT *)timers, timercnt, 0);	1305	downheap (timers, timercnt, 0);
1063	}	1306	}
1064	else	1307	else
1065	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1308	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1066		1309
1067	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1310	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1068	}	1311	}
1069	}	1312	}
1070		1313
1071	#if EV_PERIODICS	1314	#if EV_PERIODIC_ENABLE
1072	inline void	1315	void inline_size
1073	periodics_reify (EV_P)	1316	periodics_reify (EV_P)
1074	{	1317	{
1075	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1318	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1076	{	1319	{
1077	struct ev_periodic *w = periodics [0];	1320	ev_periodic *w = (ev_periodic *)periodics [0];
1078		1321
1079	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1322	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1080		1323
1081	/* first reschedule or stop timer */	1324	/* first reschedule or stop timer */
1082	if (w->reschedule_cb)	1325	if (w->reschedule_cb)
1083	{	1326	{
1084	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1327	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1085	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1328	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1086	downheap ((WT *)periodics, periodiccnt, 0);	1329	downheap (periodics, periodiccnt, 0);
1087	}	1330	}
1088	else if (w->interval)	1331	else if (w->interval)
1089	{	1332	{
1090	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1333	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1334	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1091	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1335	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1092	downheap ((WT *)periodics, periodiccnt, 0);	1336	downheap (periodics, periodiccnt, 0);
1093	}	1337	}
1094	else	1338	else
1095	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1339	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1096		1340
1097	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1341	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1098	}	1342	}
1099	}	1343	}
1100		1344
1101	static void	1345	static void noinline
1102	periodics_reschedule (EV_P)	1346	periodics_reschedule (EV_P)
1103	{	1347	{
1104	int i;	1348	int i;
1105		1349
1106	/* adjust periodics after time jump */	1350	/* adjust periodics after time jump */
1107	for (i = 0; i < periodiccnt; ++i)	1351	for (i = 0; i < periodiccnt; ++i)
1108	{	1352	{
1109	struct ev_periodic *w = periodics [i];	1353	ev_periodic *w = (ev_periodic *)periodics [i];
1110		1354
1111	if (w->reschedule_cb)	1355	if (w->reschedule_cb)
1112	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1356	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1113	else if (w->interval)	1357	else if (w->interval)
1114	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1358	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1115	}	1359	}
1116		1360
1117	/* now rebuild the heap */	1361	/* now rebuild the heap */
1118	for (i = periodiccnt >> 1; i--; )	1362	for (i = periodiccnt >> 1; i--; )
1119	downheap ((WT *)periodics, periodiccnt, i);	1363	downheap (periodics, periodiccnt, i);
1120	}	1364	}
1121	#endif	1365	#endif
1122		1366
1123	inline int	1367	#if EV_IDLE_ENABLE
1124	time_update_monotonic (EV_P)	1368	void inline_size
		1369	idle_reify (EV_P)
1125	{	1370	{
		1371	if (expect_false (idleall))
		1372	{
		1373	int pri;
		1374
		1375	for (pri = NUMPRI; pri--; )
		1376	{
		1377	if (pendingcnt [pri])
		1378	break;
		1379
		1380	if (idlecnt [pri])
		1381	{
		1382	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1383	break;
		1384	}
		1385	}
		1386	}
		1387	}
		1388	#endif
		1389
		1390	void inline_speed
		1391	time_update (EV_P_ ev_tstamp max_block)
		1392	{
		1393	int i;
		1394
		1395	#if EV_USE_MONOTONIC
		1396	if (expect_true (have_monotonic))
		1397	{
		1398	ev_tstamp odiff = rtmn_diff;
		1399
1126	mn_now = get_clock ();	1400	mn_now = get_clock ();
1127		1401
		1402	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1403	/* interpolate in the meantime */
1128	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1404	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1129	{	1405	{
1130	ev_rt_now = rtmn_diff + mn_now;	1406	ev_rt_now = rtmn_diff + mn_now;
1131	return 0;	1407	return;
1132	}	1408	}
1133	else	1409
1134	{
1135	now_floor = mn_now;	1410	now_floor = mn_now;
1136	ev_rt_now = ev_time ();	1411	ev_rt_now = ev_time ();
1137	return 1;
1138	}
1139	}
1140		1412
1141	inline void	1413	/* loop a few times, before making important decisions.
1142	time_update (EV_P)	1414	* on the choice of "4": one iteration isn't enough,
1143	{	1415	* in case we get preempted during the calls to
1144	int i;	1416	* ev_time and get_clock. a second call is almost guaranteed
1145		1417	* to succeed in that case, though. and looping a few more times
1146	#if EV_USE_MONOTONIC	1418	* doesn't hurt either as we only do this on time-jumps or
1147	if (expect_true (have_monotonic))	1419	* in the unlikely event of having been preempted here.
1148	{	1420	*/
1149	if (time_update_monotonic (EV_A))	1421	for (i = 4; --i; )
1150	{	1422	{
1151	ev_tstamp odiff = rtmn_diff;
1152
1153	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1154	{
1155	rtmn_diff = ev_rt_now - mn_now;	1423	rtmn_diff = ev_rt_now - mn_now;
1156		1424
1157	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1425	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1158	return; /* all is well */	1426	return; /* all is well */
1159		1427
1160	ev_rt_now = ev_time ();	1428	ev_rt_now = ev_time ();
1161	mn_now = get_clock ();	1429	mn_now = get_clock ();
1162	now_floor = mn_now;	1430	now_floor = mn_now;
1163	}	1431	}
1164		1432
1165	# if EV_PERIODICS	1433	# if EV_PERIODIC_ENABLE
		1434	periodics_reschedule (EV_A);
		1435	# endif
		1436	/* no timer adjustment, as the monotonic clock doesn't jump */
		1437	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1438	}
		1439	else
		1440	#endif
		1441	{
		1442	ev_rt_now = ev_time ();
		1443
		1444	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1445	{
		1446	#if EV_PERIODIC_ENABLE
1166	periodics_reschedule (EV_A);	1447	periodics_reschedule (EV_A);
1167	# endif	1448	#endif
1168	/* no timer adjustment, as the monotonic clock doesn't jump */
1169	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1170	}
1171	}
1172	else
1173	#endif
1174	{
1175	ev_rt_now = ev_time ();
1176
1177	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1178	{
1179	#if EV_PERIODICS
1180	periodics_reschedule (EV_A);
1181	#endif
1182
1183	/* adjust timers. this is easy, as the offset is the same for all */	1449	/* adjust timers. this is easy, as the offset is the same for all of them */
1184	for (i = 0; i < timercnt; ++i)	1450	for (i = 0; i < timercnt; ++i)
1185	((WT)timers [i])->at += ev_rt_now - mn_now;	1451	((WT)timers [i])->at += ev_rt_now - mn_now;
1186	}	1452	}
1187		1453
1188	mn_now = ev_rt_now;	1454	mn_now = ev_rt_now;
…		…
1204	static int loop_done;	1470	static int loop_done;
1205		1471
1206	void	1472	void
1207	ev_loop (EV_P_ int flags)	1473	ev_loop (EV_P_ int flags)
1208	{	1474	{
1209	double block;
1210	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1475	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1476	? EVUNLOOP_ONE
		1477	: EVUNLOOP_CANCEL;
1211		1478
1212	while (activecnt)	1479	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1480
		1481	do
1213	{	1482	{
		1483	#ifndef _WIN32
		1484	if (expect_false (curpid)) /* penalise the forking check even more */
		1485	if (expect_false (getpid () != curpid))
		1486	{
		1487	curpid = getpid ();
		1488	postfork = 1;
		1489	}
		1490	#endif
		1491
		1492	#if EV_FORK_ENABLE
		1493	/* we might have forked, so queue fork handlers */
		1494	if (expect_false (postfork))
		1495	if (forkcnt)
		1496	{
		1497	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1498	call_pending (EV_A);
		1499	}
		1500	#endif
		1501
1214	/* queue check watchers (and execute them) */	1502	/* queue prepare watchers (and execute them) */
1215	if (expect_false (preparecnt))	1503	if (expect_false (preparecnt))
1216	{	1504	{
1217	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1505	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1218	call_pending (EV_A);	1506	call_pending (EV_A);
1219	}	1507	}
1220		1508
		1509	if (expect_false (!activecnt))
		1510	break;
		1511
1221	/* we might have forked, so reify kernel state if necessary */	1512	/* we might have forked, so reify kernel state if necessary */
1222	if (expect_false (postfork))	1513	if (expect_false (postfork))
1223	loop_fork (EV_A);	1514	loop_fork (EV_A);
1224		1515
1225	/* update fd-related kernel structures */	1516	/* update fd-related kernel structures */
1226	fd_reify (EV_A);	1517	fd_reify (EV_A);
1227		1518
1228	/* calculate blocking time */	1519	/* calculate blocking time */
		1520	{
		1521	ev_tstamp waittime = 0.;
		1522	ev_tstamp sleeptime = 0.;
1229		1523
1230	/* we only need this for !monotonic clock or timers, but as we basically	1524	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1231	always have timers, we just calculate it always */
1232	#if EV_USE_MONOTONIC
1233	if (expect_true (have_monotonic))
1234	time_update_monotonic (EV_A);
1235	else
1236	#endif
1237	{	1525	{
1238	ev_rt_now = ev_time ();	1526	/* update time to cancel out callback processing overhead */
1239	mn_now = ev_rt_now;	1527	time_update (EV_A_ 1e100);
1240	}
1241		1528
1242	if (flags & EVLOOP_NONBLOCK || idlecnt)
1243	block = 0.;
1244	else
1245	{
1246	block = MAX_BLOCKTIME;	1529	waittime = MAX_BLOCKTIME;
1247		1530
1248	if (timercnt)	1531	if (timercnt)
1249	{	1532	{
1250	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1533	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1251	if (block > to) block = to;	1534	if (waittime > to) waittime = to;
1252	}	1535	}
1253		1536
1254	#if EV_PERIODICS	1537	#if EV_PERIODIC_ENABLE
1255	if (periodiccnt)	1538	if (periodiccnt)
1256	{	1539	{
1257	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1540	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1258	if (block > to) block = to;	1541	if (waittime > to) waittime = to;
1259	}	1542	}
1260	#endif	1543	#endif
1261		1544
1262	if (expect_false (block < 0.)) block = 0.;	1545	if (expect_false (waittime < timeout_blocktime))
		1546	waittime = timeout_blocktime;
		1547
		1548	sleeptime = waittime - backend_fudge;
		1549
		1550	if (expect_true (sleeptime > io_blocktime))
		1551	sleeptime = io_blocktime;
		1552
		1553	if (sleeptime)
		1554	{
		1555	ev_sleep (sleeptime);
		1556	waittime -= sleeptime;
		1557	}
1263	}	1558	}
1264		1559
1265	method_poll (EV_A_ block);	1560	++loop_count;
		1561	backend_poll (EV_A_ waittime);
1266		1562
1267	/* update ev_rt_now, do magic */	1563	/* update ev_rt_now, do magic */
1268	time_update (EV_A);	1564	time_update (EV_A_ waittime + sleeptime);
		1565	}
1269		1566
1270	/* queue pending timers and reschedule them */	1567	/* queue pending timers and reschedule them */
1271	timers_reify (EV_A); /* relative timers called last */	1568	timers_reify (EV_A); /* relative timers called last */
1272	#if EV_PERIODICS	1569	#if EV_PERIODIC_ENABLE
1273	periodics_reify (EV_A); /* absolute timers called first */	1570	periodics_reify (EV_A); /* absolute timers called first */
1274	#endif	1571	#endif
1275		1572
		1573	#if EV_IDLE_ENABLE
1276	/* queue idle watchers unless io or timers are pending */	1574	/* queue idle watchers unless other events are pending */
1277	if (idlecnt && !any_pending (EV_A))	1575	idle_reify (EV_A);
1278	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1576	#endif
1279		1577
1280	/* queue check watchers, to be executed first */	1578	/* queue check watchers, to be executed first */
1281	if (expect_false (checkcnt))	1579	if (expect_false (checkcnt))
1282	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1580	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1283		1581
1284	call_pending (EV_A);	1582	call_pending (EV_A);
1285		1583
1286	if (expect_false (loop_done))
1287	break;
1288	}	1584	}
		1585	while (expect_true (activecnt && !loop_done));
1289		1586
1290	if (loop_done != 2)	1587	if (loop_done == EVUNLOOP_ONE)
1291	loop_done = 0;	1588	loop_done = EVUNLOOP_CANCEL;
1292	}	1589	}
1293		1590
1294	void	1591	void
1295	ev_unloop (EV_P_ int how)	1592	ev_unloop (EV_P_ int how)
1296	{	1593	{
1297	loop_done = how;	1594	loop_done = how;
1298	}	1595	}
1299		1596
1300	/*****************************************************************************/	1597	/*****************************************************************************/
1301		1598
1302	inline void	1599	void inline_size
1303	wlist_add (WL *head, WL elem)	1600	wlist_add (WL *head, WL elem)
1304	{	1601	{
1305	elem->next = *head;	1602	elem->next = *head;
1306	*head = elem;	1603	*head = elem;
1307	}	1604	}
1308		1605
1309	inline void	1606	void inline_size
1310	wlist_del (WL *head, WL elem)	1607	wlist_del (WL *head, WL elem)
1311	{	1608	{
1312	while (*head)	1609	while (*head)
1313	{	1610	{
1314	if (*head == elem)	1611	if (*head == elem)
…		…
1319		1616
1320	head = &(*head)->next;	1617	head = &(*head)->next;
1321	}	1618	}
1322	}	1619	}
1323		1620
1324	inline void	1621	void inline_speed
1325	ev_clear_pending (EV_P_ W w)	1622	clear_pending (EV_P_ W w)
1326	{	1623	{
1327	if (w->pending)	1624	if (w->pending)
1328	{	1625	{
1329	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1626	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1330	w->pending = 0;	1627	w->pending = 0;
1331	}	1628	}
1332	}	1629	}
1333		1630
1334	inline void	1631	int
		1632	ev_clear_pending (EV_P_ void *w)
		1633	{
		1634	W w_ = (W)w;
		1635	int pending = w_->pending;
		1636
		1637	if (expect_true (pending))
		1638	{
		1639	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1640	w_->pending = 0;
		1641	p->w = 0;
		1642	return p->events;
		1643	}
		1644	else
		1645	return 0;
		1646	}
		1647
		1648	void inline_size
		1649	pri_adjust (EV_P_ W w)
		1650	{
		1651	int pri = w->priority;
		1652	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1653	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1654	w->priority = pri;
		1655	}
		1656
		1657	void inline_speed
1335	ev_start (EV_P_ W w, int active)	1658	ev_start (EV_P_ W w, int active)
1336	{	1659	{
1337	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1660	pri_adjust (EV_A_ w);
1338	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1339
1340	w->active = active;	1661	w->active = active;
1341	ev_ref (EV_A);	1662	ev_ref (EV_A);
1342	}	1663	}
1343		1664
1344	inline void	1665	void inline_size
1345	ev_stop (EV_P_ W w)	1666	ev_stop (EV_P_ W w)
1346	{	1667	{
1347	ev_unref (EV_A);	1668	ev_unref (EV_A);
1348	w->active = 0;	1669	w->active = 0;
1349	}	1670	}
1350		1671
1351	/*****************************************************************************/	1672	/*****************************************************************************/
1352		1673
1353	void	1674	void noinline
1354	ev_io_start (EV_P_ struct ev_io *w)	1675	ev_io_start (EV_P_ ev_io *w)
1355	{	1676	{
1356	int fd = w->fd;	1677	int fd = w->fd;
1357		1678
1358	if (expect_false (ev_is_active (w)))	1679	if (expect_false (ev_is_active (w)))
1359	return;	1680	return;
1360		1681
1361	assert (("ev_io_start called with negative fd", fd >= 0));	1682	assert (("ev_io_start called with negative fd", fd >= 0));
1362		1683
1363	ev_start (EV_A_ (W)w, 1);	1684	ev_start (EV_A_ (W)w, 1);
1364	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1685	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1365	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1686	wlist_add (&anfds[fd].head, (WL)w);
1366		1687
1367	fd_change (EV_A_ fd);	1688	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1689	w->events &= ~EV_IOFDSET;
1368	}	1690	}
1369		1691
1370	void	1692	void noinline
1371	ev_io_stop (EV_P_ struct ev_io *w)	1693	ev_io_stop (EV_P_ ev_io *w)
1372	{	1694	{
1373	ev_clear_pending (EV_A_ (W)w);	1695	clear_pending (EV_A_ (W)w);
1374	if (expect_false (!ev_is_active (w)))	1696	if (expect_false (!ev_is_active (w)))
1375	return;	1697	return;
1376		1698
1377	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1699	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1378		1700
1379	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1701	wlist_del (&anfds[w->fd].head, (WL)w);
1380	ev_stop (EV_A_ (W)w);	1702	ev_stop (EV_A_ (W)w);
1381		1703
1382	fd_change (EV_A_ w->fd);	1704	fd_change (EV_A_ w->fd, 1);
1383	}	1705	}
1384		1706
1385	void	1707	void noinline
1386	ev_timer_start (EV_P_ struct ev_timer *w)	1708	ev_timer_start (EV_P_ ev_timer *w)
1387	{	1709	{
1388	if (expect_false (ev_is_active (w)))	1710	if (expect_false (ev_is_active (w)))
1389	return;	1711	return;
1390		1712
1391	((WT)w)->at += mn_now;	1713	((WT)w)->at += mn_now;
1392		1714
1393	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1715	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1394		1716
1395	ev_start (EV_A_ (W)w, ++timercnt);	1717	ev_start (EV_A_ (W)w, ++timercnt);
1396	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);	1718	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1397	timers [timercnt - 1] = w;	1719	timers [timercnt - 1] = (WT)w;
1398	upheap ((WT *)timers, timercnt - 1);	1720	upheap (timers, timercnt - 1);
1399		1721
1400	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1722	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1401	}	1723	}
1402		1724
1403	void	1725	void noinline
1404	ev_timer_stop (EV_P_ struct ev_timer *w)	1726	ev_timer_stop (EV_P_ ev_timer *w)
1405	{	1727	{
1406	ev_clear_pending (EV_A_ (W)w);	1728	clear_pending (EV_A_ (W)w);
1407	if (expect_false (!ev_is_active (w)))	1729	if (expect_false (!ev_is_active (w)))
1408	return;	1730	return;
1409		1731
1410	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1732	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1411		1733
		1734	{
		1735	int active = ((W)w)->active;
		1736
1412	if (expect_true (((W)w)->active < timercnt--))	1737	if (expect_true (--active < --timercnt))
1413	{	1738	{
1414	timers [((W)w)->active - 1] = timers [timercnt];	1739	timers [active] = timers [timercnt];
1415	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1740	adjustheap (timers, timercnt, active);
1416	}	1741	}
		1742	}
1417		1743
1418	((WT)w)->at -= mn_now;	1744	((WT)w)->at -= mn_now;
1419		1745
1420	ev_stop (EV_A_ (W)w);	1746	ev_stop (EV_A_ (W)w);
1421	}	1747	}
1422		1748
1423	void	1749	void noinline
1424	ev_timer_again (EV_P_ struct ev_timer *w)	1750	ev_timer_again (EV_P_ ev_timer *w)
1425	{	1751	{
1426	if (ev_is_active (w))	1752	if (ev_is_active (w))
1427	{	1753	{
1428	if (w->repeat)	1754	if (w->repeat)
1429	{	1755	{
1430	((WT)w)->at = mn_now + w->repeat;	1756	((WT)w)->at = mn_now + w->repeat;
1431	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1757	adjustheap (timers, timercnt, ((W)w)->active - 1);
1432	}	1758	}
1433	else	1759	else
1434	ev_timer_stop (EV_A_ w);	1760	ev_timer_stop (EV_A_ w);
1435	}	1761	}
1436	else if (w->repeat)	1762	else if (w->repeat)
…		…
1438	w->at = w->repeat;	1764	w->at = w->repeat;
1439	ev_timer_start (EV_A_ w);	1765	ev_timer_start (EV_A_ w);
1440	}	1766	}
1441	}	1767	}
1442		1768
1443	#if EV_PERIODICS	1769	#if EV_PERIODIC_ENABLE
1444	void	1770	void noinline
1445	ev_periodic_start (EV_P_ struct ev_periodic *w)	1771	ev_periodic_start (EV_P_ ev_periodic *w)
1446	{	1772	{
1447	if (expect_false (ev_is_active (w)))	1773	if (expect_false (ev_is_active (w)))
1448	return;	1774	return;
1449		1775
1450	if (w->reschedule_cb)	1776	if (w->reschedule_cb)
1451	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1777	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1452	else if (w->interval)	1778	else if (w->interval)
1453	{	1779	{
1454	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1780	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1455	/* this formula differs from the one in periodic_reify because we do not always round up */	1781	/* this formula differs from the one in periodic_reify because we do not always round up */
1456	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1782	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1457	}	1783	}
		1784	else
		1785	((WT)w)->at = w->offset;
1458		1786
1459	ev_start (EV_A_ (W)w, ++periodiccnt);	1787	ev_start (EV_A_ (W)w, ++periodiccnt);
1460	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1788	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1461	periodics [periodiccnt - 1] = w;	1789	periodics [periodiccnt - 1] = (WT)w;
1462	upheap ((WT *)periodics, periodiccnt - 1);	1790	upheap (periodics, periodiccnt - 1);
1463		1791
1464	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1792	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1465	}	1793	}
1466		1794
1467	void	1795	void noinline
1468	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1796	ev_periodic_stop (EV_P_ ev_periodic *w)
1469	{	1797	{
1470	ev_clear_pending (EV_A_ (W)w);	1798	clear_pending (EV_A_ (W)w);
1471	if (expect_false (!ev_is_active (w)))	1799	if (expect_false (!ev_is_active (w)))
1472	return;	1800	return;
1473		1801
1474	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1802	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1475		1803
		1804	{
		1805	int active = ((W)w)->active;
		1806
1476	if (expect_true (((W)w)->active < periodiccnt--))	1807	if (expect_true (--active < --periodiccnt))
1477	{	1808	{
1478	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1809	periodics [active] = periodics [periodiccnt];
1479	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1810	adjustheap (periodics, periodiccnt, active);
1480	}	1811	}
		1812	}
1481		1813
1482	ev_stop (EV_A_ (W)w);	1814	ev_stop (EV_A_ (W)w);
1483	}	1815	}
1484		1816
1485	void	1817	void noinline
1486	ev_periodic_again (EV_P_ struct ev_periodic *w)	1818	ev_periodic_again (EV_P_ ev_periodic *w)
1487	{	1819	{
1488	/* TODO: use adjustheap and recalculation */	1820	/* TODO: use adjustheap and recalculation */
1489	ev_periodic_stop (EV_A_ w);	1821	ev_periodic_stop (EV_A_ w);
1490	ev_periodic_start (EV_A_ w);	1822	ev_periodic_start (EV_A_ w);
1491	}	1823	}
1492	#endif	1824	#endif
1493		1825
1494	void
1495	ev_idle_start (EV_P_ struct ev_idle *w)
1496	{
1497	if (expect_false (ev_is_active (w)))
1498	return;
1499
1500	ev_start (EV_A_ (W)w, ++idlecnt);
1501	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1502	idles [idlecnt - 1] = w;
1503	}
1504
1505	void
1506	ev_idle_stop (EV_P_ struct ev_idle *w)
1507	{
1508	ev_clear_pending (EV_A_ (W)w);
1509	if (expect_false (!ev_is_active (w)))
1510	return;
1511
1512	idles [((W)w)->active - 1] = idles [--idlecnt];
1513	ev_stop (EV_A_ (W)w);
1514	}
1515
1516	void
1517	ev_prepare_start (EV_P_ struct ev_prepare *w)
1518	{
1519	if (expect_false (ev_is_active (w)))
1520	return;
1521
1522	ev_start (EV_A_ (W)w, ++preparecnt);
1523	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1524	prepares [preparecnt - 1] = w;
1525	}
1526
1527	void
1528	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1529	{
1530	ev_clear_pending (EV_A_ (W)w);
1531	if (expect_false (!ev_is_active (w)))
1532	return;
1533
1534	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1535	ev_stop (EV_A_ (W)w);
1536	}
1537
1538	void
1539	ev_check_start (EV_P_ struct ev_check *w)
1540	{
1541	if (expect_false (ev_is_active (w)))
1542	return;
1543
1544	ev_start (EV_A_ (W)w, ++checkcnt);
1545	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1546	checks [checkcnt - 1] = w;
1547	}
1548
1549	void
1550	ev_check_stop (EV_P_ struct ev_check *w)
1551	{
1552	ev_clear_pending (EV_A_ (W)w);
1553	if (expect_false (!ev_is_active (w)))
1554	return;
1555
1556	checks [((W)w)->active - 1] = checks [--checkcnt];
1557	ev_stop (EV_A_ (W)w);
1558	}
1559
1560	#ifndef SA_RESTART	1826	#ifndef SA_RESTART
1561	# define SA_RESTART 0	1827	# define SA_RESTART 0
1562	#endif	1828	#endif
1563		1829
1564	void	1830	void noinline
1565	ev_signal_start (EV_P_ struct ev_signal *w)	1831	ev_signal_start (EV_P_ ev_signal *w)
1566	{	1832	{
1567	#if EV_MULTIPLICITY	1833	#if EV_MULTIPLICITY
1568	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1834	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1569	#endif	1835	#endif
1570	if (expect_false (ev_is_active (w)))	1836	if (expect_false (ev_is_active (w)))
1571	return;	1837	return;
1572		1838
1573	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1839	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1574		1840
		1841	{
		1842	#ifndef _WIN32
		1843	sigset_t full, prev;
		1844	sigfillset (&full);
		1845	sigprocmask (SIG_SETMASK, &full, &prev);
		1846	#endif
		1847
		1848	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1849
		1850	#ifndef _WIN32
		1851	sigprocmask (SIG_SETMASK, &prev, 0);
		1852	#endif
		1853	}
		1854
1575	ev_start (EV_A_ (W)w, 1);	1855	ev_start (EV_A_ (W)w, 1);
1576	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1577	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1856	wlist_add (&signals [w->signum - 1].head, (WL)w);
1578		1857
1579	if (!((WL)w)->next)	1858	if (!((WL)w)->next)
1580	{	1859	{
1581	#if _WIN32	1860	#if _WIN32
1582	signal (w->signum, sighandler);	1861	signal (w->signum, sighandler);
…		…
1588	sigaction (w->signum, &sa, 0);	1867	sigaction (w->signum, &sa, 0);
1589	#endif	1868	#endif
1590	}	1869	}
1591	}	1870	}
1592		1871
1593	void	1872	void noinline
1594	ev_signal_stop (EV_P_ struct ev_signal *w)	1873	ev_signal_stop (EV_P_ ev_signal *w)
1595	{	1874	{
1596	ev_clear_pending (EV_A_ (W)w);	1875	clear_pending (EV_A_ (W)w);
1597	if (expect_false (!ev_is_active (w)))	1876	if (expect_false (!ev_is_active (w)))
1598	return;	1877	return;
1599		1878
1600	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1879	wlist_del (&signals [w->signum - 1].head, (WL)w);
1601	ev_stop (EV_A_ (W)w);	1880	ev_stop (EV_A_ (W)w);
1602		1881
1603	if (!signals [w->signum - 1].head)	1882	if (!signals [w->signum - 1].head)
1604	signal (w->signum, SIG_DFL);	1883	signal (w->signum, SIG_DFL);
1605	}	1884	}
1606		1885
1607	void	1886	void
1608	ev_child_start (EV_P_ struct ev_child *w)	1887	ev_child_start (EV_P_ ev_child *w)
1609	{	1888	{
1610	#if EV_MULTIPLICITY	1889	#if EV_MULTIPLICITY
1611	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1890	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1612	#endif	1891	#endif
1613	if (expect_false (ev_is_active (w)))	1892	if (expect_false (ev_is_active (w)))
1614	return;	1893	return;
1615		1894
1616	ev_start (EV_A_ (W)w, 1);	1895	ev_start (EV_A_ (W)w, 1);
1617	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1896	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1618	}	1897	}
1619		1898
1620	void	1899	void
1621	ev_child_stop (EV_P_ struct ev_child *w)	1900	ev_child_stop (EV_P_ ev_child *w)
1622	{	1901	{
1623	ev_clear_pending (EV_A_ (W)w);	1902	clear_pending (EV_A_ (W)w);
1624	if (expect_false (!ev_is_active (w)))	1903	if (expect_false (!ev_is_active (w)))
1625	return;	1904	return;
1626		1905
1627	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1906	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1628	ev_stop (EV_A_ (W)w);	1907	ev_stop (EV_A_ (W)w);
1629	}	1908	}
1630		1909
		1910	#if EV_STAT_ENABLE
		1911
		1912	# ifdef _WIN32
		1913	# undef lstat
		1914	# define lstat(a,b) _stati64 (a,b)
		1915	# endif
		1916
		1917	#define DEF_STAT_INTERVAL 5.0074891
		1918	#define MIN_STAT_INTERVAL 0.1074891
		1919
		1920	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1921
		1922	#if EV_USE_INOTIFY
		1923	# define EV_INOTIFY_BUFSIZE 8192
		1924
		1925	static void noinline
		1926	infy_add (EV_P_ ev_stat *w)
		1927	{
		1928	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);
		1929
		1930	if (w->wd < 0)
		1931	{
		1932	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1933
		1934	/* monitor some parent directory for speedup hints */
		1935	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1936	{
		1937	char path [4096];
		1938	strcpy (path, w->path);
		1939
		1940	do
		1941	{
		1942	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1943	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1944
		1945	char *pend = strrchr (path, '/');
		1946
		1947	if (!pend)
		1948	break; /* whoops, no '/', complain to your admin */
		1949
		1950	*pend = 0;
		1951	w->wd = inotify_add_watch (fs_fd, path, mask);
		1952	}
		1953	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1954	}
		1955	}
		1956	else
		1957	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1958
		1959	if (w->wd >= 0)
		1960	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1961	}
		1962
		1963	static void noinline
		1964	infy_del (EV_P_ ev_stat *w)
		1965	{
		1966	int slot;
		1967	int wd = w->wd;
		1968
		1969	if (wd < 0)
		1970	return;
		1971
		1972	w->wd = -2;
		1973	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1974	wlist_del (&fs_hash [slot].head, (WL)w);
		1975
		1976	/* remove this watcher, if others are watching it, they will rearm */
		1977	inotify_rm_watch (fs_fd, wd);
		1978	}
		1979
		1980	static void noinline
		1981	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1982	{
		1983	if (slot < 0)
		1984	/* overflow, need to check for all hahs slots */
		1985	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1986	infy_wd (EV_A_ slot, wd, ev);
		1987	else
		1988	{
		1989	WL w_;
		1990
		1991	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1992	{
		1993	ev_stat *w = (ev_stat *)w_;
		1994	w_ = w_->next; /* lets us remove this watcher and all before it */
		1995
		1996	if (w->wd == wd || wd == -1)
		1997	{
		1998	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1999	{
		2000	w->wd = -1;
		2001	infy_add (EV_A_ w); /* re-add, no matter what */
		2002	}
		2003
		2004	stat_timer_cb (EV_A_ &w->timer, 0);
		2005	}
		2006	}
		2007	}
		2008	}
		2009
		2010	static void
		2011	infy_cb (EV_P_ ev_io *w, int revents)
		2012	{
		2013	char buf [EV_INOTIFY_BUFSIZE];
		2014	struct inotify_event *ev = (struct inotify_event *)buf;
		2015	int ofs;
		2016	int len = read (fs_fd, buf, sizeof (buf));
		2017
		2018	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2019	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2020	}
		2021
		2022	void inline_size
		2023	infy_init (EV_P)
		2024	{
		2025	if (fs_fd != -2)
		2026	return;
		2027
		2028	fs_fd = inotify_init ();
		2029
		2030	if (fs_fd >= 0)
		2031	{
		2032	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2033	ev_set_priority (&fs_w, EV_MAXPRI);
		2034	ev_io_start (EV_A_ &fs_w);
		2035	}
		2036	}
		2037
		2038	void inline_size
		2039	infy_fork (EV_P)
		2040	{
		2041	int slot;
		2042
		2043	if (fs_fd < 0)
		2044	return;
		2045
		2046	close (fs_fd);
		2047	fs_fd = inotify_init ();
		2048
		2049	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2050	{
		2051	WL w_ = fs_hash [slot].head;
		2052	fs_hash [slot].head = 0;
		2053
		2054	while (w_)
		2055	{
		2056	ev_stat *w = (ev_stat *)w_;
		2057	w_ = w_->next; /* lets us add this watcher */
		2058
		2059	w->wd = -1;
		2060
		2061	if (fs_fd >= 0)
		2062	infy_add (EV_A_ w); /* re-add, no matter what */
		2063	else
		2064	ev_timer_start (EV_A_ &w->timer);
		2065	}
		2066
		2067	}
		2068	}
		2069
		2070	#endif
		2071
		2072	void
		2073	ev_stat_stat (EV_P_ ev_stat *w)
		2074	{
		2075	if (lstat (w->path, &w->attr) < 0)
		2076	w->attr.st_nlink = 0;
		2077	else if (!w->attr.st_nlink)
		2078	w->attr.st_nlink = 1;
		2079	}
		2080
		2081	static void noinline
		2082	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2083	{
		2084	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2085
		2086	/* we copy this here each the time so that */
		2087	/* prev has the old value when the callback gets invoked */
		2088	w->prev = w->attr;
		2089	ev_stat_stat (EV_A_ w);
		2090
		2091	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2092	if (
		2093	w->prev.st_dev != w->attr.st_dev
		2094	|| w->prev.st_ino != w->attr.st_ino
		2095	|| w->prev.st_mode != w->attr.st_mode
		2096	|| w->prev.st_nlink != w->attr.st_nlink
		2097	|| w->prev.st_uid != w->attr.st_uid
		2098	|| w->prev.st_gid != w->attr.st_gid
		2099	|| w->prev.st_rdev != w->attr.st_rdev
		2100	|| w->prev.st_size != w->attr.st_size
		2101	|| w->prev.st_atime != w->attr.st_atime
		2102	|| w->prev.st_mtime != w->attr.st_mtime
		2103	|| w->prev.st_ctime != w->attr.st_ctime
		2104	) {
		2105	#if EV_USE_INOTIFY
		2106	infy_del (EV_A_ w);
		2107	infy_add (EV_A_ w);
		2108	ev_stat_stat (EV_A_ w); /* avoid race... */
		2109	#endif
		2110
		2111	ev_feed_event (EV_A_ w, EV_STAT);
		2112	}
		2113	}
		2114
		2115	void
		2116	ev_stat_start (EV_P_ ev_stat *w)
		2117	{
		2118	if (expect_false (ev_is_active (w)))
		2119	return;
		2120
		2121	/* since we use memcmp, we need to clear any padding data etc. */
		2122	memset (&w->prev, 0, sizeof (ev_statdata));
		2123	memset (&w->attr, 0, sizeof (ev_statdata));
		2124
		2125	ev_stat_stat (EV_A_ w);
		2126
		2127	if (w->interval < MIN_STAT_INTERVAL)
		2128	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2129
		2130	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2131	ev_set_priority (&w->timer, ev_priority (w));
		2132
		2133	#if EV_USE_INOTIFY
		2134	infy_init (EV_A);
		2135
		2136	if (fs_fd >= 0)
		2137	infy_add (EV_A_ w);
		2138	else
		2139	#endif
		2140	ev_timer_start (EV_A_ &w->timer);
		2141
		2142	ev_start (EV_A_ (W)w, 1);
		2143	}
		2144
		2145	void
		2146	ev_stat_stop (EV_P_ ev_stat *w)
		2147	{
		2148	clear_pending (EV_A_ (W)w);
		2149	if (expect_false (!ev_is_active (w)))
		2150	return;
		2151
		2152	#if EV_USE_INOTIFY
		2153	infy_del (EV_A_ w);
		2154	#endif
		2155	ev_timer_stop (EV_A_ &w->timer);
		2156
		2157	ev_stop (EV_A_ (W)w);
		2158	}
		2159	#endif
		2160
		2161	#if EV_IDLE_ENABLE
		2162	void
		2163	ev_idle_start (EV_P_ ev_idle *w)
		2164	{
		2165	if (expect_false (ev_is_active (w)))
		2166	return;
		2167
		2168	pri_adjust (EV_A_ (W)w);
		2169
		2170	{
		2171	int active = ++idlecnt [ABSPRI (w)];
		2172
		2173	++idleall;
		2174	ev_start (EV_A_ (W)w, active);
		2175
		2176	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2177	idles [ABSPRI (w)][active - 1] = w;
		2178	}
		2179	}
		2180
		2181	void
		2182	ev_idle_stop (EV_P_ ev_idle *w)
		2183	{
		2184	clear_pending (EV_A_ (W)w);
		2185	if (expect_false (!ev_is_active (w)))
		2186	return;
		2187
		2188	{
		2189	int active = ((W)w)->active;
		2190
		2191	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2192	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2193
		2194	ev_stop (EV_A_ (W)w);
		2195	--idleall;
		2196	}
		2197	}
		2198	#endif
		2199
		2200	void
		2201	ev_prepare_start (EV_P_ ev_prepare *w)
		2202	{
		2203	if (expect_false (ev_is_active (w)))
		2204	return;
		2205
		2206	ev_start (EV_A_ (W)w, ++preparecnt);
		2207	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2208	prepares [preparecnt - 1] = w;
		2209	}
		2210
		2211	void
		2212	ev_prepare_stop (EV_P_ ev_prepare *w)
		2213	{
		2214	clear_pending (EV_A_ (W)w);
		2215	if (expect_false (!ev_is_active (w)))
		2216	return;
		2217
		2218	{
		2219	int active = ((W)w)->active;
		2220	prepares [active - 1] = prepares [--preparecnt];
		2221	((W)prepares [active - 1])->active = active;
		2222	}
		2223
		2224	ev_stop (EV_A_ (W)w);
		2225	}
		2226
		2227	void
		2228	ev_check_start (EV_P_ ev_check *w)
		2229	{
		2230	if (expect_false (ev_is_active (w)))
		2231	return;
		2232
		2233	ev_start (EV_A_ (W)w, ++checkcnt);
		2234	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2235	checks [checkcnt - 1] = w;
		2236	}
		2237
		2238	void
		2239	ev_check_stop (EV_P_ ev_check *w)
		2240	{
		2241	clear_pending (EV_A_ (W)w);
		2242	if (expect_false (!ev_is_active (w)))
		2243	return;
		2244
		2245	{
		2246	int active = ((W)w)->active;
		2247	checks [active - 1] = checks [--checkcnt];
		2248	((W)checks [active - 1])->active = active;
		2249	}
		2250
		2251	ev_stop (EV_A_ (W)w);
		2252	}
		2253
		2254	#if EV_EMBED_ENABLE
		2255	void noinline
		2256	ev_embed_sweep (EV_P_ ev_embed *w)
		2257	{
		2258	ev_loop (w->other, EVLOOP_NONBLOCK);
		2259	}
		2260
		2261	static void
		2262	embed_io_cb (EV_P_ ev_io *io, int revents)
		2263	{
		2264	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2265
		2266	if (ev_cb (w))
		2267	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2268	else
		2269	ev_embed_sweep (loop, w);
		2270	}
		2271
		2272	static void
		2273	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2274	{
		2275	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2276
		2277	fd_reify (w->other);
		2278	}
		2279
		2280	void
		2281	ev_embed_start (EV_P_ ev_embed *w)
		2282	{
		2283	if (expect_false (ev_is_active (w)))
		2284	return;
		2285
		2286	{
		2287	struct ev_loop *loop = w->other;
		2288	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2289	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
		2290	}
		2291
		2292	ev_set_priority (&w->io, ev_priority (w));
		2293	ev_io_start (EV_A_ &w->io);
		2294
		2295	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2296	ev_set_priority (&w->prepare, EV_MINPRI);
		2297	ev_prepare_start (EV_A_ &w->prepare);
		2298
		2299	ev_start (EV_A_ (W)w, 1);
		2300	}
		2301
		2302	void
		2303	ev_embed_stop (EV_P_ ev_embed *w)
		2304	{
		2305	clear_pending (EV_A_ (W)w);
		2306	if (expect_false (!ev_is_active (w)))
		2307	return;
		2308
		2309	ev_io_stop (EV_A_ &w->io);
		2310	ev_prepare_stop (EV_A_ &w->prepare);
		2311
		2312	ev_stop (EV_A_ (W)w);
		2313	}
		2314	#endif
		2315
		2316	#if EV_FORK_ENABLE
		2317	void
		2318	ev_fork_start (EV_P_ ev_fork *w)
		2319	{
		2320	if (expect_false (ev_is_active (w)))
		2321	return;
		2322
		2323	ev_start (EV_A_ (W)w, ++forkcnt);
		2324	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2325	forks [forkcnt - 1] = w;
		2326	}
		2327
		2328	void
		2329	ev_fork_stop (EV_P_ ev_fork *w)
		2330	{
		2331	clear_pending (EV_A_ (W)w);
		2332	if (expect_false (!ev_is_active (w)))
		2333	return;
		2334
		2335	{
		2336	int active = ((W)w)->active;
		2337	forks [active - 1] = forks [--forkcnt];
		2338	((W)forks [active - 1])->active = active;
		2339	}
		2340
		2341	ev_stop (EV_A_ (W)w);
		2342	}
		2343	#endif
		2344
1631	/*****************************************************************************/	2345	/*****************************************************************************/
1632		2346
1633	struct ev_once	2347	struct ev_once
1634	{	2348	{
1635	struct ev_io io;	2349	ev_io io;
1636	struct ev_timer to;	2350	ev_timer to;
1637	void (*cb)(int revents, void *arg);	2351	void (*cb)(int revents, void *arg);
1638	void *arg;	2352	void *arg;
1639	};	2353	};
1640		2354
1641	static void	2355	static void
…		…
1650		2364
1651	cb (revents, arg);	2365	cb (revents, arg);
1652	}	2366	}
1653		2367
1654	static void	2368	static void
1655	once_cb_io (EV_P_ struct ev_io *w, int revents)	2369	once_cb_io (EV_P_ ev_io *w, int revents)
1656	{	2370	{
1657	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2371	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1658	}	2372	}
1659		2373
1660	static void	2374	static void
1661	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2375	once_cb_to (EV_P_ ev_timer *w, int revents)
1662	{	2376	{
1663	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2377	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1664	}	2378	}
1665		2379
1666	void	2380	void
…		…
1690	ev_timer_set (&once->to, timeout, 0.);	2404	ev_timer_set (&once->to, timeout, 0.);
1691	ev_timer_start (EV_A_ &once->to);	2405	ev_timer_start (EV_A_ &once->to);
1692	}	2406	}
1693	}	2407	}
1694		2408
		2409	#if EV_MULTIPLICITY
		2410	#include "ev_wrap.h"
		2411	#endif
		2412
1695	#ifdef __cplusplus	2413	#ifdef __cplusplus
1696	}	2414	}
1697	#endif	2415	#endif
1698		2416

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