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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 1.194 by root, Sat Dec 22 07:03:31 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
		285	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		286	/* giving it a reasonably high chance of working on typical architetcures */
213	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	287	static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
214		288
215	#ifdef _WIN32	289	#ifdef _WIN32
216	# include "ev_win32.c"	290	# include "ev_win32.c"
217	#endif	291	#endif
218		292
219	/*****************************************************************************/	293	/*****************************************************************************/
220		294
221	static void (*syserr_cb)(const char *msg);	295	static void (*syserr_cb)(const char *msg);
222		296
		297	void
223	void ev_set_syserr_cb (void (*cb)(const char *msg))	298	ev_set_syserr_cb (void (*cb)(const char *msg))
224	{	299	{
225	syserr_cb = cb;	300	syserr_cb = cb;
226	}	301	}
227		302
228	static void	303	static void noinline
229	syserr (const char *msg)	304	syserr (const char *msg)
230	{	305	{
231	if (!msg)	306	if (!msg)
232	msg = "(libev) system error";	307	msg = "(libev) system error";
233		308
…		…
240	}	315	}
241	}	316	}
242		317
243	static void *(*alloc)(void *ptr, long size);	318	static void *(*alloc)(void *ptr, long size);
244		319
		320	void
245	void ev_set_allocator (void *(*cb)(void *ptr, long size))	321	ev_set_allocator (void *(*cb)(void *ptr, long size))
246	{	322	{
247	alloc = cb;	323	alloc = cb;
248	}	324	}
249		325
250	static void *	326	inline_speed void *
251	ev_realloc (void *ptr, long size)	327	ev_realloc (void *ptr, long size)
252	{	328	{
253	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	329	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
254		330
255	if (!ptr && size)	331	if (!ptr && size)
…		…
279	typedef struct	355	typedef struct
280	{	356	{
281	W w;	357	W w;
282	int events;	358	int events;
283	} ANPENDING;	359	} ANPENDING;
		360
		361	#if EV_USE_INOTIFY
		362	typedef struct
		363	{
		364	WL head;
		365	} ANFS;
		366	#endif
284		367
285	#if EV_MULTIPLICITY	368	#if EV_MULTIPLICITY
286		369
287	struct ev_loop	370	struct ev_loop
288	{	371	{
…		…
322	gettimeofday (&tv, 0);	405	gettimeofday (&tv, 0);
323	return tv.tv_sec + tv.tv_usec * 1e-6;	406	return tv.tv_sec + tv.tv_usec * 1e-6;
324	#endif	407	#endif
325	}	408	}
326		409
327	inline ev_tstamp	410	ev_tstamp inline_size
328	get_clock (void)	411	get_clock (void)
329	{	412	{
330	#if EV_USE_MONOTONIC	413	#if EV_USE_MONOTONIC
331	if (expect_true (have_monotonic))	414	if (expect_true (have_monotonic))
332	{	415	{
…		…
345	{	428	{
346	return ev_rt_now;	429	return ev_rt_now;
347	}	430	}
348	#endif	431	#endif
349		432
350	#define array_roundsize(type,n) (((n) | 4) & ~3)	433	void
		434	ev_sleep (ev_tstamp delay)
		435	{
		436	if (delay > 0.)
		437	{
		438	#if EV_USE_NANOSLEEP
		439	struct timespec ts;
		440
		441	ts.tv_sec = (time_t)delay;
		442	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		443
		444	nanosleep (&ts, 0);
		445	#elif defined(_WIN32)
		446	Sleep (delay * 1e3);
		447	#else
		448	struct timeval tv;
		449
		450	tv.tv_sec = (time_t)delay;
		451	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		452
		453	select (0, 0, 0, 0, &tv);
		454	#endif
		455	}
		456	}
		457
		458	/*****************************************************************************/
		459
		460	int inline_size
		461	array_nextsize (int elem, int cur, int cnt)
		462	{
		463	int ncur = cur + 1;
		464
		465	do
		466	ncur <<= 1;
		467	while (cnt > ncur);
		468
		469	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		470	if (elem * ncur > 4096)
		471	{
		472	ncur *= elem;
		473	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		474	ncur = ncur - sizeof (void *) * 4;
		475	ncur /= elem;
		476	}
		477
		478	return ncur;
		479	}
		480
		481	static noinline void *
		482	array_realloc (int elem, void *base, int *cur, int cnt)
		483	{
		484	*cur = array_nextsize (elem, *cur, cnt);
		485	return ev_realloc (base, elem * *cur);
		486	}
351		487
352	#define array_needsize(type,base,cur,cnt,init) \	488	#define array_needsize(type,base,cur,cnt,init) \
353	if (expect_false ((cnt) > cur)) \	489	if (expect_false ((cnt) > (cur))) \
354	{ \	490	{ \
355	int newcnt = cur; \	491	int ocur_ = (cur); \
356	do \	492	(base) = (type *)array_realloc \
357	{ \	493	(sizeof (type), (base), &(cur), (cnt)); \
358	newcnt = array_roundsize (type, newcnt << 1); \	494	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	}	495	}
366		496
		497	#if 0
367	#define array_slim(type,stem) \	498	#define array_slim(type,stem) \
368	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	499	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
369	{ \	500	{ \
370	stem ## max = array_roundsize (stem ## cnt >> 1); \	501	stem ## max = array_roundsize (stem ## cnt >> 1); \
371	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	502	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
372	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	503	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
373	}	504	}
		505	#endif
374		506
375	#define array_free(stem, idx) \	507	#define array_free(stem, idx) \
376	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	508	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
377		509
378	/*****************************************************************************/	510	/*****************************************************************************/
379		511
380	static void	512	void noinline
		513	ev_feed_event (EV_P_ void *w, int revents)
		514	{
		515	W w_ = (W)w;
		516	int pri = ABSPRI (w_);
		517
		518	if (expect_false (w_->pending))
		519	pendings [pri][w_->pending - 1].events |= revents;
		520	else
		521	{
		522	w_->pending = ++pendingcnt [pri];
		523	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		524	pendings [pri][w_->pending - 1].w = w_;
		525	pendings [pri][w_->pending - 1].events = revents;
		526	}
		527	}
		528
		529	void inline_speed
		530	queue_events (EV_P_ W *events, int eventcnt, int type)
		531	{
		532	int i;
		533
		534	for (i = 0; i < eventcnt; ++i)
		535	ev_feed_event (EV_A_ events [i], type);
		536	}
		537
		538	/*****************************************************************************/
		539
		540	void inline_size
381	anfds_init (ANFD *base, int count)	541	anfds_init (ANFD *base, int count)
382	{	542	{
383	while (count--)	543	while (count--)
384	{	544	{
385	base->head = 0;	545	base->head = 0;
…		…
388		548
389	++base;	549	++base;
390	}	550	}
391	}	551	}
392		552
393	void	553	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)	554	fd_event (EV_P_ int fd, int revents)
421	{	555	{
422	ANFD *anfd = anfds + fd;	556	ANFD *anfd = anfds + fd;
423	struct ev_io *w;	557	ev_io *w;
424		558
425	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	559	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
426	{	560	{
427	int ev = w->events & revents;	561	int ev = w->events & revents;
428		562
429	if (ev)	563	if (ev)
430	ev_feed_event (EV_A_ (W)w, ev);	564	ev_feed_event (EV_A_ (W)w, ev);
…		…
432	}	566	}
433		567
434	void	568	void
435	ev_feed_fd_event (EV_P_ int fd, int revents)	569	ev_feed_fd_event (EV_P_ int fd, int revents)
436	{	570	{
		571	if (fd >= 0 && fd < anfdmax)
437	fd_event (EV_A_ fd, revents);	572	fd_event (EV_A_ fd, revents);
438	}	573	}
439		574
440	/*****************************************************************************/	575	void inline_size
441
442	inline void
443	fd_reify (EV_P)	576	fd_reify (EV_P)
444	{	577	{
445	int i;	578	int i;
446		579
447	for (i = 0; i < fdchangecnt; ++i)	580	for (i = 0; i < fdchangecnt; ++i)
448	{	581	{
449	int fd = fdchanges [i];	582	int fd = fdchanges [i];
450	ANFD *anfd = anfds + fd;	583	ANFD *anfd = anfds + fd;
451	struct ev_io *w;	584	ev_io *w;
452		585
453	int events = 0;	586	unsigned char events = 0;
454		587
455	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	588	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
456	events |= w->events;	589	events |= (unsigned char)w->events;
457		590
458	#if EV_SELECT_IS_WINSOCKET	591	#if EV_SELECT_IS_WINSOCKET
459	if (events)	592	if (events)
460	{	593	{
461	unsigned long argp;	594	unsigned long argp;
462	anfd->handle = _get_osfhandle (fd);	595	anfd->handle = _get_osfhandle (fd);
463	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	596	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
464	}	597	}
465	#endif	598	#endif
466		599
		600	{
		601	unsigned char o_events = anfd->events;
		602	unsigned char o_reify = anfd->reify;
		603
467	anfd->reify = 0;	604	anfd->reify = 0;
468
469	method_modify (EV_A_ fd, anfd->events, events);
470	anfd->events = events;	605	anfd->events = events;
		606
		607	if (o_events != events || o_reify & EV_IOFDSET)
		608	backend_modify (EV_A_ fd, o_events, events);
		609	}
471	}	610	}
472		611
473	fdchangecnt = 0;	612	fdchangecnt = 0;
474	}	613	}
475		614
476	static void	615	void inline_size
477	fd_change (EV_P_ int fd)	616	fd_change (EV_P_ int fd, int flags)
478	{	617	{
479	if (expect_false (anfds [fd].reify))	618	unsigned char reify = anfds [fd].reify;
480	return;
481
482	anfds [fd].reify = 1;	619	anfds [fd].reify |= flags;
483		620
		621	if (expect_true (!reify))
		622	{
484	++fdchangecnt;	623	++fdchangecnt;
485	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	624	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
486	fdchanges [fdchangecnt - 1] = fd;	625	fdchanges [fdchangecnt - 1] = fd;
		626	}
487	}	627	}
488		628
489	static void	629	void inline_speed
490	fd_kill (EV_P_ int fd)	630	fd_kill (EV_P_ int fd)
491	{	631	{
492	struct ev_io *w;	632	ev_io *w;
493		633
494	while ((w = (struct ev_io *)anfds [fd].head))	634	while ((w = (ev_io *)anfds [fd].head))
495	{	635	{
496	ev_io_stop (EV_A_ w);	636	ev_io_stop (EV_A_ w);
497	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	637	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
498	}	638	}
499	}	639	}
500		640
501	inline int	641	int inline_size
502	fd_valid (int fd)	642	fd_valid (int fd)
503	{	643	{
504	#ifdef _WIN32	644	#ifdef _WIN32
505	return _get_osfhandle (fd) != -1;	645	return _get_osfhandle (fd) != -1;
506	#else	646	#else
507	return fcntl (fd, F_GETFD) != -1;	647	return fcntl (fd, F_GETFD) != -1;
508	#endif	648	#endif
509	}	649	}
510		650
511	/* called on EBADF to verify fds */	651	/* called on EBADF to verify fds */
512	static void	652	static void noinline
513	fd_ebadf (EV_P)	653	fd_ebadf (EV_P)
514	{	654	{
515	int fd;	655	int fd;
516		656
517	for (fd = 0; fd < anfdmax; ++fd)	657	for (fd = 0; fd < anfdmax; ++fd)
…		…
519	if (!fd_valid (fd) == -1 && errno == EBADF)	659	if (!fd_valid (fd) == -1 && errno == EBADF)
520	fd_kill (EV_A_ fd);	660	fd_kill (EV_A_ fd);
521	}	661	}
522		662
523	/* called on ENOMEM in select/poll to kill some fds and retry */	663	/* called on ENOMEM in select/poll to kill some fds and retry */
524	static void	664	static void noinline
525	fd_enomem (EV_P)	665	fd_enomem (EV_P)
526	{	666	{
527	int fd;	667	int fd;
528		668
529	for (fd = anfdmax; fd--; )	669	for (fd = anfdmax; fd--; )
…		…
532	fd_kill (EV_A_ fd);	672	fd_kill (EV_A_ fd);
533	return;	673	return;
534	}	674	}
535	}	675	}
536		676
537	/* usually called after fork if method needs to re-arm all fds from scratch */	677	/* usually called after fork if backend needs to re-arm all fds from scratch */
538	static void	678	static void noinline
539	fd_rearm_all (EV_P)	679	fd_rearm_all (EV_P)
540	{	680	{
541	int fd;	681	int fd;
542		682
543	/* this should be highly optimised to not do anything but set a flag */
544	for (fd = 0; fd < anfdmax; ++fd)	683	for (fd = 0; fd < anfdmax; ++fd)
545	if (anfds [fd].events)	684	if (anfds [fd].events)
546	{	685	{
547	anfds [fd].events = 0;	686	anfds [fd].events = 0;
548	fd_change (EV_A_ fd);	687	fd_change (EV_A_ fd, EV_IOFDSET | 1);
549	}	688	}
550	}	689	}
551		690
552	/*****************************************************************************/	691	/*****************************************************************************/
553		692
554	static void	693	void inline_speed
555	upheap (WT *heap, int k)	694	upheap (WT *heap, int k)
556	{	695	{
557	WT w = heap [k];	696	WT w = heap [k];
558		697
559	while (k && heap [k >> 1]->at > w->at)	698	while (k)
560	{	699	{
		700	int p = (k - 1) >> 1;
		701
		702	if (heap [p]->at <= w->at)
		703	break;
		704
561	heap [k] = heap [k >> 1];	705	heap [k] = heap [p];
562	((W)heap [k])->active = k + 1;	706	((W)heap [k])->active = k + 1;
563	k >>= 1;	707	k = p;
564	}	708	}
565		709
566	heap [k] = w;	710	heap [k] = w;
567	((W)heap [k])->active = k + 1;	711	((W)heap [k])->active = k + 1;
568
569	}	712	}
570		713
571	static void	714	void inline_speed
572	downheap (WT *heap, int N, int k)	715	downheap (WT *heap, int N, int k)
573	{	716	{
574	WT w = heap [k];	717	WT w = heap [k];
575		718
576	while (k < (N >> 1))	719	for (;;)
577	{	720	{
578	int j = k << 1;	721	int c = (k << 1) + 1;
579		722
580	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	723	if (c >= N)
581	++j;
582
583	if (w->at <= heap [j]->at)
584	break;	724	break;
585		725
		726	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		727	? 1 : 0;
		728
		729	if (w->at <= heap [c]->at)
		730	break;
		731
586	heap [k] = heap [j];	732	heap [k] = heap [c];
587	((W)heap [k])->active = k + 1;	733	((W)heap [k])->active = k + 1;
		734
588	k = j;	735	k = c;
589	}	736	}
590		737
591	heap [k] = w;	738	heap [k] = w;
592	((W)heap [k])->active = k + 1;	739	((W)heap [k])->active = k + 1;
593	}	740	}
594		741
595	inline void	742	void inline_size
596	adjustheap (WT *heap, int N, int k)	743	adjustheap (WT *heap, int N, int k)
597	{	744	{
598	upheap (heap, k);	745	upheap (heap, k);
599	downheap (heap, N, k);	746	downheap (heap, N, k);
600	}	747	}
…		…
610	static ANSIG *signals;	757	static ANSIG *signals;
611	static int signalmax;	758	static int signalmax;
612		759
613	static int sigpipe [2];	760	static int sigpipe [2];
614	static sig_atomic_t volatile gotsig;	761	static sig_atomic_t volatile gotsig;
615	static struct ev_io sigev;	762	static ev_io sigev;
616		763
617	static void	764	void inline_size
618	signals_init (ANSIG *base, int count)	765	signals_init (ANSIG *base, int count)
619	{	766	{
620	while (count--)	767	while (count--)
621	{	768	{
622	base->head = 0;	769	base->head = 0;
…		…
642	write (sigpipe [1], &signum, 1);	789	write (sigpipe [1], &signum, 1);
643	errno = old_errno;	790	errno = old_errno;
644	}	791	}
645	}	792	}
646		793
647	void	794	void noinline
648	ev_feed_signal_event (EV_P_ int signum)	795	ev_feed_signal_event (EV_P_ int signum)
649	{	796	{
650	WL w;	797	WL w;
651		798
652	#if EV_MULTIPLICITY	799	#if EV_MULTIPLICITY
…		…
663	for (w = signals [signum].head; w; w = w->next)	810	for (w = signals [signum].head; w; w = w->next)
664	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	811	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
665	}	812	}
666		813
667	static void	814	static void
668	sigcb (EV_P_ struct ev_io *iow, int revents)	815	sigcb (EV_P_ ev_io *iow, int revents)
669	{	816	{
670	int signum;	817	int signum;
671		818
672	read (sigpipe [0], &revents, 1);	819	read (sigpipe [0], &revents, 1);
673	gotsig = 0;	820	gotsig = 0;
…		…
675	for (signum = signalmax; signum--; )	822	for (signum = signalmax; signum--; )
676	if (signals [signum].gotsig)	823	if (signals [signum].gotsig)
677	ev_feed_signal_event (EV_A_ signum + 1);	824	ev_feed_signal_event (EV_A_ signum + 1);
678	}	825	}
679		826
680	static void	827	void inline_speed
681	fd_intern (int fd)	828	fd_intern (int fd)
682	{	829	{
683	#ifdef _WIN32	830	#ifdef _WIN32
684	int arg = 1;	831	int arg = 1;
685	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	832	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
687	fcntl (fd, F_SETFD, FD_CLOEXEC);	834	fcntl (fd, F_SETFD, FD_CLOEXEC);
688	fcntl (fd, F_SETFL, O_NONBLOCK);	835	fcntl (fd, F_SETFL, O_NONBLOCK);
689	#endif	836	#endif
690	}	837	}
691		838
692	static void	839	static void noinline
693	siginit (EV_P)	840	siginit (EV_P)
694	{	841	{
695	fd_intern (sigpipe [0]);	842	fd_intern (sigpipe [0]);
696	fd_intern (sigpipe [1]);	843	fd_intern (sigpipe [1]);
697		844
…		…
700	ev_unref (EV_A); /* child watcher should not keep loop alive */	847	ev_unref (EV_A); /* child watcher should not keep loop alive */
701	}	848	}
702		849
703	/*****************************************************************************/	850	/*****************************************************************************/
704		851
705	static struct ev_child *childs [PID_HASHSIZE];	852	static WL childs [EV_PID_HASHSIZE];
706		853
707	#ifndef _WIN32	854	#ifndef _WIN32
708		855
709	static struct ev_signal childev;	856	static ev_signal childev;
		857
		858	void inline_speed
		859	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		860	{
		861	ev_child *w;
		862
		863	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		864	if (w->pid == pid || !w->pid)
		865	{
		866	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		867	w->rpid = pid;
		868	w->rstatus = status;
		869	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		870	}
		871	}
710		872
711	#ifndef WCONTINUED	873	#ifndef WCONTINUED
712	# define WCONTINUED 0	874	# define WCONTINUED 0
713	#endif	875	#endif
714		876
715	static void	877	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)	878	childcb (EV_P_ ev_signal *sw, int revents)
732	{	879	{
733	int pid, status;	880	int pid, status;
734		881
		882	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
735	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	883	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
736	{	884	if (!WCONTINUED
		885	|| errno != EINVAL
		886	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		887	return;
		888
737	/* make sure we are called again until all childs have been reaped */	889	/* make sure we are called again until all childs have been reaped */
		890	/* 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);	891	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
739		892
740	child_reap (EV_A_ sw, pid, pid, status);	893	child_reap (EV_A_ sw, pid, pid, status);
		894	if (EV_PID_HASHSIZE > 1)
741	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	895	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
742	}
743	}	896	}
744		897
745	#endif	898	#endif
746		899
747	/*****************************************************************************/	900	/*****************************************************************************/
…		…
773	{	926	{
774	return EV_VERSION_MINOR;	927	return EV_VERSION_MINOR;
775	}	928	}
776		929
777	/* return true if we are running with elevated privileges and should ignore env variables */	930	/* return true if we are running with elevated privileges and should ignore env variables */
778	static int	931	int inline_size
779	enable_secure (void)	932	enable_secure (void)
780	{	933	{
781	#ifdef _WIN32	934	#ifdef _WIN32
782	return 0;	935	return 0;
783	#else	936	#else
…		…
785	|| getgid () != getegid ();	938	|| getgid () != getegid ();
786	#endif	939	#endif
787	}	940	}
788		941
789	unsigned int	942	unsigned int
790	ev_method (EV_P)	943	ev_supported_backends (void)
791	{	944	{
792	return method;	945	unsigned int flags = 0;
793	}
794		946
795	static void	947	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		948	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		949	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		950	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		951	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		952
		953	return flags;
		954	}
		955
		956	unsigned int
		957	ev_recommended_backends (void)
		958	{
		959	unsigned int flags = ev_supported_backends ();
		960
		961	#ifndef __NetBSD__
		962	/* kqueue is borked on everything but netbsd apparently */
		963	/* it usually doesn't work correctly on anything but sockets and pipes */
		964	flags &= ~EVBACKEND_KQUEUE;
		965	#endif
		966	#ifdef __APPLE__
		967	// flags &= ~EVBACKEND_KQUEUE; for documentation
		968	flags &= ~EVBACKEND_POLL;
		969	#endif
		970
		971	return flags;
		972	}
		973
		974	unsigned int
		975	ev_embeddable_backends (void)
		976	{
		977	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		978	return EVBACKEND_KQUEUE
		979	| EVBACKEND_PORT;
		980	}
		981
		982	unsigned int
		983	ev_backend (EV_P)
		984	{
		985	return backend;
		986	}
		987
		988	unsigned int
		989	ev_loop_count (EV_P)
		990	{
		991	return loop_count;
		992	}
		993
		994	void
		995	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		996	{
		997	io_blocktime = interval;
		998	}
		999
		1000	void
		1001	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1002	{
		1003	timeout_blocktime = interval;
		1004	}
		1005
		1006	static void noinline
796	loop_init (EV_P_ unsigned int flags)	1007	loop_init (EV_P_ unsigned int flags)
797	{	1008	{
798	if (!method)	1009	if (!backend)
799	{	1010	{
800	#if EV_USE_MONOTONIC	1011	#if EV_USE_MONOTONIC
801	{	1012	{
802	struct timespec ts;	1013	struct timespec ts;
803	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1014	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
808	ev_rt_now = ev_time ();	1019	ev_rt_now = ev_time ();
809	mn_now = get_clock ();	1020	mn_now = get_clock ();
810	now_floor = mn_now;	1021	now_floor = mn_now;
811	rtmn_diff = ev_rt_now - mn_now;	1022	rtmn_diff = ev_rt_now - mn_now;
812		1023
813	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))	1024	io_blocktime = 0.;
		1025	timeout_blocktime = 0.;
		1026
		1027	/* pid check not overridable via env */
		1028	#ifndef _WIN32
		1029	if (flags & EVFLAG_FORKCHECK)
		1030	curpid = getpid ();
		1031	#endif
		1032
		1033	if (!(flags & EVFLAG_NOENV)
		1034	&& !enable_secure ()
		1035	&& getenv ("LIBEV_FLAGS"))
814	flags = atoi (getenv ("LIBEV_FLAGS"));	1036	flags = atoi (getenv ("LIBEV_FLAGS"));
815		1037
816	if (!(flags & 0x0000ffff))	1038	if (!(flags & 0x0000ffffUL))
817	flags |= 0x0000ffff;	1039	flags |= ev_recommended_backends ();
818		1040
819	method = 0;	1041	backend = 0;
		1042	backend_fd = -1;
		1043	#if EV_USE_INOTIFY
		1044	fs_fd = -2;
		1045	#endif
		1046
820	#if EV_USE_PORT	1047	#if EV_USE_PORT
821	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);	1048	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
822	#endif	1049	#endif
823	#if EV_USE_KQUEUE	1050	#if EV_USE_KQUEUE
824	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);	1051	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
825	#endif	1052	#endif
826	#if EV_USE_EPOLL	1053	#if EV_USE_EPOLL
827	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);	1054	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
828	#endif	1055	#endif
829	#if EV_USE_POLL	1056	#if EV_USE_POLL
830	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);	1057	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
831	#endif	1058	#endif
832	#if EV_USE_SELECT	1059	#if EV_USE_SELECT
833	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);	1060	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
834	#endif	1061	#endif
835		1062
836	ev_init (&sigev, sigcb);	1063	ev_init (&sigev, sigcb);
837	ev_set_priority (&sigev, EV_MAXPRI);	1064	ev_set_priority (&sigev, EV_MAXPRI);
838	}	1065	}
839	}	1066	}
840		1067
841	static void	1068	static void noinline
842	loop_destroy (EV_P)	1069	loop_destroy (EV_P)
843	{	1070	{
844	int i;	1071	int i;
845		1072
		1073	#if EV_USE_INOTIFY
		1074	if (fs_fd >= 0)
		1075	close (fs_fd);
		1076	#endif
		1077
		1078	if (backend_fd >= 0)
		1079	close (backend_fd);
		1080
846	#if EV_USE_PORT	1081	#if EV_USE_PORT
847	if (method == EVMETHOD_PORT ) port_destroy (EV_A);	1082	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
848	#endif	1083	#endif
849	#if EV_USE_KQUEUE	1084	#if EV_USE_KQUEUE
850	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1085	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
851	#endif	1086	#endif
852	#if EV_USE_EPOLL	1087	#if EV_USE_EPOLL
853	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1088	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
854	#endif	1089	#endif
855	#if EV_USE_POLL	1090	#if EV_USE_POLL
856	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1091	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
857	#endif	1092	#endif
858	#if EV_USE_SELECT	1093	#if EV_USE_SELECT
859	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1094	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
860	#endif	1095	#endif
861		1096
862	for (i = NUMPRI; i--; )	1097	for (i = NUMPRI; i--; )
		1098	{
863	array_free (pending, [i]);	1099	array_free (pending, [i]);
		1100	#if EV_IDLE_ENABLE
		1101	array_free (idle, [i]);
		1102	#endif
		1103	}
		1104
		1105	ev_free (anfds); anfdmax = 0;
864		1106
865	/* have to use the microsoft-never-gets-it-right macro */	1107	/* have to use the microsoft-never-gets-it-right macro */
866	array_free (fdchange, EMPTY0);	1108	array_free (fdchange, EMPTY);
867	array_free (timer, EMPTY0);	1109	array_free (timer, EMPTY);
868	#if EV_PERIODICS	1110	#if EV_PERIODIC_ENABLE
869	array_free (periodic, EMPTY0);	1111	array_free (periodic, EMPTY);
870	#endif	1112	#endif
		1113	#if EV_FORK_ENABLE
871	array_free (idle, EMPTY0);	1114	array_free (fork, EMPTY);
		1115	#endif
872	array_free (prepare, EMPTY0);	1116	array_free (prepare, EMPTY);
873	array_free (check, EMPTY0);	1117	array_free (check, EMPTY);
874		1118
875	method = 0;	1119	backend = 0;
876	}	1120	}
877		1121
878	static void	1122	void inline_size infy_fork (EV_P);
		1123
		1124	void inline_size
879	loop_fork (EV_P)	1125	loop_fork (EV_P)
880	{	1126	{
881	#if EV_USE_PORT	1127	#if EV_USE_PORT
882	if (method == EVMETHOD_PORT ) port_fork (EV_A);	1128	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
883	#endif	1129	#endif
884	#if EV_USE_KQUEUE	1130	#if EV_USE_KQUEUE
885	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1131	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
886	#endif	1132	#endif
887	#if EV_USE_EPOLL	1133	#if EV_USE_EPOLL
888	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1134	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1135	#endif
		1136	#if EV_USE_INOTIFY
		1137	infy_fork (EV_A);
889	#endif	1138	#endif
890		1139
891	if (ev_is_active (&sigev))	1140	if (ev_is_active (&sigev))
892	{	1141	{
893	/* default loop */	1142	/* default loop */
…		…
914		1163
915	memset (loop, 0, sizeof (struct ev_loop));	1164	memset (loop, 0, sizeof (struct ev_loop));
916		1165
917	loop_init (EV_A_ flags);	1166	loop_init (EV_A_ flags);
918		1167
919	if (ev_method (EV_A))	1168	if (ev_backend (EV_A))
920	return loop;	1169	return loop;
921		1170
922	return 0;	1171	return 0;
923	}	1172	}
924		1173
…		…
957	ev_default_loop_ptr = 1;	1206	ev_default_loop_ptr = 1;
958	#endif	1207	#endif
959		1208
960	loop_init (EV_A_ flags);	1209	loop_init (EV_A_ flags);
961		1210
962	if (ev_method (EV_A))	1211	if (ev_backend (EV_A))
963	{	1212	{
964	siginit (EV_A);	1213	siginit (EV_A);
965		1214
966	#ifndef _WIN32	1215	#ifndef _WIN32
967	ev_signal_init (&childev, childcb, SIGCHLD);	1216	ev_signal_init (&childev, childcb, SIGCHLD);
…		…
1003	{	1252	{
1004	#if EV_MULTIPLICITY	1253	#if EV_MULTIPLICITY
1005	struct ev_loop *loop = ev_default_loop_ptr;	1254	struct ev_loop *loop = ev_default_loop_ptr;
1006	#endif	1255	#endif
1007		1256
1008	if (method)	1257	if (backend)
1009	postfork = 1;	1258	postfork = 1;
1010	}	1259	}
1011		1260
1012	/*****************************************************************************/	1261	/*****************************************************************************/
1013		1262
1014	static int	1263	void
1015	any_pending (EV_P)	1264	ev_invoke (EV_P_ void *w, int revents)
1016	{	1265	{
1017	int pri;	1266	EV_CB_INVOKE ((W)w, revents);
1018
1019	for (pri = NUMPRI; pri--; )
1020	if (pendingcnt [pri])
1021	return 1;
1022
1023	return 0;
1024	}	1267	}
1025		1268
1026	inline void	1269	void inline_speed
1027	call_pending (EV_P)	1270	call_pending (EV_P)
1028	{	1271	{
1029	int pri;	1272	int pri;
1030		1273
1031	for (pri = NUMPRI; pri--; )	1274	for (pri = NUMPRI; pri--; )
…		…
1033	{	1276	{
1034	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1277	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1035		1278
1036	if (expect_true (p->w))	1279	if (expect_true (p->w))
1037	{	1280	{
		1281	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1282
1038	p->w->pending = 0;	1283	p->w->pending = 0;
1039	EV_CB_INVOKE (p->w, p->events);	1284	EV_CB_INVOKE (p->w, p->events);
1040	}	1285	}
1041	}	1286	}
1042	}	1287	}
1043		1288
1044	inline void	1289	void inline_size
1045	timers_reify (EV_P)	1290	timers_reify (EV_P)
1046	{	1291	{
1047	while (timercnt && ((WT)timers [0])->at <= mn_now)	1292	while (timercnt && ((WT)timers [0])->at <= mn_now)
1048	{	1293	{
1049	struct ev_timer *w = timers [0];	1294	ev_timer *w = (ev_timer *)timers [0];
1050		1295
1051	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1296	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1052		1297
1053	/* first reschedule or stop timer */	1298	/* first reschedule or stop timer */
1054	if (w->repeat)	1299	if (w->repeat)
1055	{	1300	{
1056	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1301	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1057		1302
1058	((WT)w)->at += w->repeat;	1303	((WT)w)->at += w->repeat;
1059	if (((WT)w)->at < mn_now)	1304	if (((WT)w)->at < mn_now)
1060	((WT)w)->at = mn_now;	1305	((WT)w)->at = mn_now;
1061		1306
1062	downheap ((WT *)timers, timercnt, 0);	1307	downheap (timers, timercnt, 0);
1063	}	1308	}
1064	else	1309	else
1065	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1310	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1066		1311
1067	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1312	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1068	}	1313	}
1069	}	1314	}
1070		1315
1071	#if EV_PERIODICS	1316	#if EV_PERIODIC_ENABLE
1072	inline void	1317	void inline_size
1073	periodics_reify (EV_P)	1318	periodics_reify (EV_P)
1074	{	1319	{
1075	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1320	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1076	{	1321	{
1077	struct ev_periodic *w = periodics [0];	1322	ev_periodic *w = (ev_periodic *)periodics [0];
1078		1323
1079	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1324	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1080		1325
1081	/* first reschedule or stop timer */	1326	/* first reschedule or stop timer */
1082	if (w->reschedule_cb)	1327	if (w->reschedule_cb)
1083	{	1328	{
1084	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1329	((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));	1330	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1086	downheap ((WT *)periodics, periodiccnt, 0);	1331	downheap (periodics, periodiccnt, 0);
1087	}	1332	}
1088	else if (w->interval)	1333	else if (w->interval)
1089	{	1334	{
1090	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1335	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1336	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));	1337	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);	1338	downheap (periodics, periodiccnt, 0);
1093	}	1339	}
1094	else	1340	else
1095	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1341	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1096		1342
1097	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1343	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1098	}	1344	}
1099	}	1345	}
1100		1346
1101	static void	1347	static void noinline
1102	periodics_reschedule (EV_P)	1348	periodics_reschedule (EV_P)
1103	{	1349	{
1104	int i;	1350	int i;
1105		1351
1106	/* adjust periodics after time jump */	1352	/* adjust periodics after time jump */
1107	for (i = 0; i < periodiccnt; ++i)	1353	for (i = 0; i < periodiccnt; ++i)
1108	{	1354	{
1109	struct ev_periodic *w = periodics [i];	1355	ev_periodic *w = (ev_periodic *)periodics [i];
1110		1356
1111	if (w->reschedule_cb)	1357	if (w->reschedule_cb)
1112	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1358	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1113	else if (w->interval)	1359	else if (w->interval)
1114	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1360	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1115	}	1361	}
1116		1362
1117	/* now rebuild the heap */	1363	/* now rebuild the heap */
1118	for (i = periodiccnt >> 1; i--; )	1364	for (i = periodiccnt >> 1; i--; )
1119	downheap ((WT *)periodics, periodiccnt, i);	1365	downheap (periodics, periodiccnt, i);
1120	}	1366	}
1121	#endif	1367	#endif
1122		1368
1123	inline int	1369	#if EV_IDLE_ENABLE
1124	time_update_monotonic (EV_P)	1370	void inline_size
		1371	idle_reify (EV_P)
1125	{	1372	{
		1373	if (expect_false (idleall))
		1374	{
		1375	int pri;
		1376
		1377	for (pri = NUMPRI; pri--; )
		1378	{
		1379	if (pendingcnt [pri])
		1380	break;
		1381
		1382	if (idlecnt [pri])
		1383	{
		1384	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1385	break;
		1386	}
		1387	}
		1388	}
		1389	}
		1390	#endif
		1391
		1392	void inline_speed
		1393	time_update (EV_P_ ev_tstamp max_block)
		1394	{
		1395	int i;
		1396
		1397	#if EV_USE_MONOTONIC
		1398	if (expect_true (have_monotonic))
		1399	{
		1400	ev_tstamp odiff = rtmn_diff;
		1401
1126	mn_now = get_clock ();	1402	mn_now = get_clock ();
1127		1403
		1404	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1405	/* interpolate in the meantime */
1128	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1406	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1129	{	1407	{
1130	ev_rt_now = rtmn_diff + mn_now;	1408	ev_rt_now = rtmn_diff + mn_now;
1131	return 0;	1409	return;
1132	}	1410	}
1133	else	1411
1134	{
1135	now_floor = mn_now;	1412	now_floor = mn_now;
1136	ev_rt_now = ev_time ();	1413	ev_rt_now = ev_time ();
1137	return 1;
1138	}
1139	}
1140		1414
1141	inline void	1415	/* loop a few times, before making important decisions.
1142	time_update (EV_P)	1416	* on the choice of "4": one iteration isn't enough,
1143	{	1417	* in case we get preempted during the calls to
1144	int i;	1418	* ev_time and get_clock. a second call is almost guaranteed
1145		1419	* to succeed in that case, though. and looping a few more times
1146	#if EV_USE_MONOTONIC	1420	* doesn't hurt either as we only do this on time-jumps or
1147	if (expect_true (have_monotonic))	1421	* in the unlikely event of having been preempted here.
1148	{	1422	*/
1149	if (time_update_monotonic (EV_A))	1423	for (i = 4; --i; )
1150	{	1424	{
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;	1425	rtmn_diff = ev_rt_now - mn_now;
1156		1426
1157	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1427	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1158	return; /* all is well */	1428	return; /* all is well */
1159		1429
1160	ev_rt_now = ev_time ();	1430	ev_rt_now = ev_time ();
1161	mn_now = get_clock ();	1431	mn_now = get_clock ();
1162	now_floor = mn_now;	1432	now_floor = mn_now;
1163	}	1433	}
1164		1434
1165	# if EV_PERIODICS	1435	# if EV_PERIODIC_ENABLE
		1436	periodics_reschedule (EV_A);
		1437	# endif
		1438	/* no timer adjustment, as the monotonic clock doesn't jump */
		1439	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1440	}
		1441	else
		1442	#endif
		1443	{
		1444	ev_rt_now = ev_time ();
		1445
		1446	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1447	{
		1448	#if EV_PERIODIC_ENABLE
1166	periodics_reschedule (EV_A);	1449	periodics_reschedule (EV_A);
1167	# endif	1450	#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 */	1451	/* adjust timers. this is easy, as the offset is the same for all of them */
1184	for (i = 0; i < timercnt; ++i)	1452	for (i = 0; i < timercnt; ++i)
1185	((WT)timers [i])->at += ev_rt_now - mn_now;	1453	((WT)timers [i])->at += ev_rt_now - mn_now;
1186	}	1454	}
1187		1455
1188	mn_now = ev_rt_now;	1456	mn_now = ev_rt_now;
…		…
1204	static int loop_done;	1472	static int loop_done;
1205		1473
1206	void	1474	void
1207	ev_loop (EV_P_ int flags)	1475	ev_loop (EV_P_ int flags)
1208	{	1476	{
1209	double block;
1210	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1477	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1478	? EVUNLOOP_ONE
		1479	: EVUNLOOP_CANCEL;
1211		1480
1212	while (activecnt)	1481	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1482
		1483	do
1213	{	1484	{
		1485	#ifndef _WIN32
		1486	if (expect_false (curpid)) /* penalise the forking check even more */
		1487	if (expect_false (getpid () != curpid))
		1488	{
		1489	curpid = getpid ();
		1490	postfork = 1;
		1491	}
		1492	#endif
		1493
		1494	#if EV_FORK_ENABLE
		1495	/* we might have forked, so queue fork handlers */
		1496	if (expect_false (postfork))
		1497	if (forkcnt)
		1498	{
		1499	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1500	call_pending (EV_A);
		1501	}
		1502	#endif
		1503
1214	/* queue check watchers (and execute them) */	1504	/* queue prepare watchers (and execute them) */
1215	if (expect_false (preparecnt))	1505	if (expect_false (preparecnt))
1216	{	1506	{
1217	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1507	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1218	call_pending (EV_A);	1508	call_pending (EV_A);
1219	}	1509	}
1220		1510
		1511	if (expect_false (!activecnt))
		1512	break;
		1513
1221	/* we might have forked, so reify kernel state if necessary */	1514	/* we might have forked, so reify kernel state if necessary */
1222	if (expect_false (postfork))	1515	if (expect_false (postfork))
1223	loop_fork (EV_A);	1516	loop_fork (EV_A);
1224		1517
1225	/* update fd-related kernel structures */	1518	/* update fd-related kernel structures */
1226	fd_reify (EV_A);	1519	fd_reify (EV_A);
1227		1520
1228	/* calculate blocking time */	1521	/* calculate blocking time */
		1522	{
		1523	ev_tstamp waittime = 0.;
		1524	ev_tstamp sleeptime = 0.;
1229		1525
1230	/* we only need this for !monotonic clock or timers, but as we basically	1526	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	{	1527	{
1238	ev_rt_now = ev_time ();	1528	/* update time to cancel out callback processing overhead */
1239	mn_now = ev_rt_now;	1529	time_update (EV_A_ 1e100);
1240	}
1241		1530
1242	if (flags & EVLOOP_NONBLOCK || idlecnt)
1243	block = 0.;
1244	else
1245	{
1246	block = MAX_BLOCKTIME;	1531	waittime = MAX_BLOCKTIME;
1247		1532
1248	if (timercnt)	1533	if (timercnt)
1249	{	1534	{
1250	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1535	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1251	if (block > to) block = to;	1536	if (waittime > to) waittime = to;
1252	}	1537	}
1253		1538
1254	#if EV_PERIODICS	1539	#if EV_PERIODIC_ENABLE
1255	if (periodiccnt)	1540	if (periodiccnt)
1256	{	1541	{
1257	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1542	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1258	if (block > to) block = to;	1543	if (waittime > to) waittime = to;
1259	}	1544	}
1260	#endif	1545	#endif
1261		1546
1262	if (expect_false (block < 0.)) block = 0.;	1547	if (expect_false (waittime < timeout_blocktime))
		1548	waittime = timeout_blocktime;
		1549
		1550	sleeptime = waittime - backend_fudge;
		1551
		1552	if (expect_true (sleeptime > io_blocktime))
		1553	sleeptime = io_blocktime;
		1554
		1555	if (sleeptime)
		1556	{
		1557	ev_sleep (sleeptime);
		1558	waittime -= sleeptime;
		1559	}
1263	}	1560	}
1264		1561
1265	method_poll (EV_A_ block);	1562	++loop_count;
		1563	backend_poll (EV_A_ waittime);
1266		1564
1267	/* update ev_rt_now, do magic */	1565	/* update ev_rt_now, do magic */
1268	time_update (EV_A);	1566	time_update (EV_A_ waittime + sleeptime);
		1567	}
1269		1568
1270	/* queue pending timers and reschedule them */	1569	/* queue pending timers and reschedule them */
1271	timers_reify (EV_A); /* relative timers called last */	1570	timers_reify (EV_A); /* relative timers called last */
1272	#if EV_PERIODICS	1571	#if EV_PERIODIC_ENABLE
1273	periodics_reify (EV_A); /* absolute timers called first */	1572	periodics_reify (EV_A); /* absolute timers called first */
1274	#endif	1573	#endif
1275		1574
		1575	#if EV_IDLE_ENABLE
1276	/* queue idle watchers unless io or timers are pending */	1576	/* queue idle watchers unless other events are pending */
1277	if (idlecnt && !any_pending (EV_A))	1577	idle_reify (EV_A);
1278	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1578	#endif
1279		1579
1280	/* queue check watchers, to be executed first */	1580	/* queue check watchers, to be executed first */
1281	if (expect_false (checkcnt))	1581	if (expect_false (checkcnt))
1282	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1582	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1283		1583
1284	call_pending (EV_A);	1584	call_pending (EV_A);
1285		1585
1286	if (expect_false (loop_done))
1287	break;
1288	}	1586	}
		1587	while (expect_true (activecnt && !loop_done));
1289		1588
1290	if (loop_done != 2)	1589	if (loop_done == EVUNLOOP_ONE)
1291	loop_done = 0;	1590	loop_done = EVUNLOOP_CANCEL;
1292	}	1591	}
1293		1592
1294	void	1593	void
1295	ev_unloop (EV_P_ int how)	1594	ev_unloop (EV_P_ int how)
1296	{	1595	{
1297	loop_done = how;	1596	loop_done = how;
1298	}	1597	}
1299		1598
1300	/*****************************************************************************/	1599	/*****************************************************************************/
1301		1600
1302	inline void	1601	void inline_size
1303	wlist_add (WL *head, WL elem)	1602	wlist_add (WL *head, WL elem)
1304	{	1603	{
1305	elem->next = *head;	1604	elem->next = *head;
1306	*head = elem;	1605	*head = elem;
1307	}	1606	}
1308		1607
1309	inline void	1608	void inline_size
1310	wlist_del (WL *head, WL elem)	1609	wlist_del (WL *head, WL elem)
1311	{	1610	{
1312	while (*head)	1611	while (*head)
1313	{	1612	{
1314	if (*head == elem)	1613	if (*head == elem)
…		…
1319		1618
1320	head = &(*head)->next;	1619	head = &(*head)->next;
1321	}	1620	}
1322	}	1621	}
1323		1622
1324	inline void	1623	void inline_speed
1325	ev_clear_pending (EV_P_ W w)	1624	clear_pending (EV_P_ W w)
1326	{	1625	{
1327	if (w->pending)	1626	if (w->pending)
1328	{	1627	{
1329	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1628	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1330	w->pending = 0;	1629	w->pending = 0;
1331	}	1630	}
1332	}	1631	}
1333		1632
1334	inline void	1633	int
		1634	ev_clear_pending (EV_P_ void *w)
		1635	{
		1636	W w_ = (W)w;
		1637	int pending = w_->pending;
		1638
		1639	if (expect_true (pending))
		1640	{
		1641	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1642	w_->pending = 0;
		1643	p->w = 0;
		1644	return p->events;
		1645	}
		1646	else
		1647	return 0;
		1648	}
		1649
		1650	void inline_size
		1651	pri_adjust (EV_P_ W w)
		1652	{
		1653	int pri = w->priority;
		1654	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1655	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1656	w->priority = pri;
		1657	}
		1658
		1659	void inline_speed
1335	ev_start (EV_P_ W w, int active)	1660	ev_start (EV_P_ W w, int active)
1336	{	1661	{
1337	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1662	pri_adjust (EV_A_ w);
1338	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1339
1340	w->active = active;	1663	w->active = active;
1341	ev_ref (EV_A);	1664	ev_ref (EV_A);
1342	}	1665	}
1343		1666
1344	inline void	1667	void inline_size
1345	ev_stop (EV_P_ W w)	1668	ev_stop (EV_P_ W w)
1346	{	1669	{
1347	ev_unref (EV_A);	1670	ev_unref (EV_A);
1348	w->active = 0;	1671	w->active = 0;
1349	}	1672	}
1350		1673
1351	/*****************************************************************************/	1674	/*****************************************************************************/
1352		1675
1353	void	1676	void noinline
1354	ev_io_start (EV_P_ struct ev_io *w)	1677	ev_io_start (EV_P_ ev_io *w)
1355	{	1678	{
1356	int fd = w->fd;	1679	int fd = w->fd;
1357		1680
1358	if (expect_false (ev_is_active (w)))	1681	if (expect_false (ev_is_active (w)))
1359	return;	1682	return;
1360		1683
1361	assert (("ev_io_start called with negative fd", fd >= 0));	1684	assert (("ev_io_start called with negative fd", fd >= 0));
1362		1685
1363	ev_start (EV_A_ (W)w, 1);	1686	ev_start (EV_A_ (W)w, 1);
1364	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1687	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1365	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1688	wlist_add (&anfds[fd].head, (WL)w);
1366		1689
1367	fd_change (EV_A_ fd);	1690	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1691	w->events &= ~EV_IOFDSET;
1368	}	1692	}
1369		1693
1370	void	1694	void noinline
1371	ev_io_stop (EV_P_ struct ev_io *w)	1695	ev_io_stop (EV_P_ ev_io *w)
1372	{	1696	{
1373	ev_clear_pending (EV_A_ (W)w);	1697	clear_pending (EV_A_ (W)w);
1374	if (expect_false (!ev_is_active (w)))	1698	if (expect_false (!ev_is_active (w)))
1375	return;	1699	return;
1376		1700
1377	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1701	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1378		1702
1379	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1703	wlist_del (&anfds[w->fd].head, (WL)w);
1380	ev_stop (EV_A_ (W)w);	1704	ev_stop (EV_A_ (W)w);
1381		1705
1382	fd_change (EV_A_ w->fd);	1706	fd_change (EV_A_ w->fd, 1);
1383	}	1707	}
1384		1708
1385	void	1709	void noinline
1386	ev_timer_start (EV_P_ struct ev_timer *w)	1710	ev_timer_start (EV_P_ ev_timer *w)
1387	{	1711	{
1388	if (expect_false (ev_is_active (w)))	1712	if (expect_false (ev_is_active (w)))
1389	return;	1713	return;
1390		1714
1391	((WT)w)->at += mn_now;	1715	((WT)w)->at += mn_now;
1392		1716
1393	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1717	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1394		1718
1395	ev_start (EV_A_ (W)w, ++timercnt);	1719	ev_start (EV_A_ (W)w, ++timercnt);
1396	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);	1720	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1397	timers [timercnt - 1] = w;	1721	timers [timercnt - 1] = (WT)w;
1398	upheap ((WT *)timers, timercnt - 1);	1722	upheap (timers, timercnt - 1);
1399		1723
1400	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1724	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1401	}	1725	}
1402		1726
1403	void	1727	void noinline
1404	ev_timer_stop (EV_P_ struct ev_timer *w)	1728	ev_timer_stop (EV_P_ ev_timer *w)
1405	{	1729	{
1406	ev_clear_pending (EV_A_ (W)w);	1730	clear_pending (EV_A_ (W)w);
1407	if (expect_false (!ev_is_active (w)))	1731	if (expect_false (!ev_is_active (w)))
1408	return;	1732	return;
1409		1733
1410	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1734	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1411		1735
		1736	{
		1737	int active = ((W)w)->active;
		1738
1412	if (expect_true (((W)w)->active < timercnt--))	1739	if (expect_true (--active < --timercnt))
1413	{	1740	{
1414	timers [((W)w)->active - 1] = timers [timercnt];	1741	timers [active] = timers [timercnt];
1415	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1742	adjustheap (timers, timercnt, active);
1416	}	1743	}
		1744	}
1417		1745
1418	((WT)w)->at -= mn_now;	1746	((WT)w)->at -= mn_now;
1419		1747
1420	ev_stop (EV_A_ (W)w);	1748	ev_stop (EV_A_ (W)w);
1421	}	1749	}
1422		1750
1423	void	1751	void noinline
1424	ev_timer_again (EV_P_ struct ev_timer *w)	1752	ev_timer_again (EV_P_ ev_timer *w)
1425	{	1753	{
1426	if (ev_is_active (w))	1754	if (ev_is_active (w))
1427	{	1755	{
1428	if (w->repeat)	1756	if (w->repeat)
1429	{	1757	{
1430	((WT)w)->at = mn_now + w->repeat;	1758	((WT)w)->at = mn_now + w->repeat;
1431	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1759	adjustheap (timers, timercnt, ((W)w)->active - 1);
1432	}	1760	}
1433	else	1761	else
1434	ev_timer_stop (EV_A_ w);	1762	ev_timer_stop (EV_A_ w);
1435	}	1763	}
1436	else if (w->repeat)	1764	else if (w->repeat)
…		…
1438	w->at = w->repeat;	1766	w->at = w->repeat;
1439	ev_timer_start (EV_A_ w);	1767	ev_timer_start (EV_A_ w);
1440	}	1768	}
1441	}	1769	}
1442		1770
1443	#if EV_PERIODICS	1771	#if EV_PERIODIC_ENABLE
1444	void	1772	void noinline
1445	ev_periodic_start (EV_P_ struct ev_periodic *w)	1773	ev_periodic_start (EV_P_ ev_periodic *w)
1446	{	1774	{
1447	if (expect_false (ev_is_active (w)))	1775	if (expect_false (ev_is_active (w)))
1448	return;	1776	return;
1449		1777
1450	if (w->reschedule_cb)	1778	if (w->reschedule_cb)
1451	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1779	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1452	else if (w->interval)	1780	else if (w->interval)
1453	{	1781	{
1454	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1782	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 */	1783	/* 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;	1784	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1457	}	1785	}
		1786	else
		1787	((WT)w)->at = w->offset;
1458		1788
1459	ev_start (EV_A_ (W)w, ++periodiccnt);	1789	ev_start (EV_A_ (W)w, ++periodiccnt);
1460	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1790	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1461	periodics [periodiccnt - 1] = w;	1791	periodics [periodiccnt - 1] = (WT)w;
1462	upheap ((WT *)periodics, periodiccnt - 1);	1792	upheap (periodics, periodiccnt - 1);
1463		1793
1464	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1794	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1465	}	1795	}
1466		1796
1467	void	1797	void noinline
1468	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1798	ev_periodic_stop (EV_P_ ev_periodic *w)
1469	{	1799	{
1470	ev_clear_pending (EV_A_ (W)w);	1800	clear_pending (EV_A_ (W)w);
1471	if (expect_false (!ev_is_active (w)))	1801	if (expect_false (!ev_is_active (w)))
1472	return;	1802	return;
1473		1803
1474	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1804	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1475		1805
		1806	{
		1807	int active = ((W)w)->active;
		1808
1476	if (expect_true (((W)w)->active < periodiccnt--))	1809	if (expect_true (--active < --periodiccnt))
1477	{	1810	{
1478	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1811	periodics [active] = periodics [periodiccnt];
1479	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1812	adjustheap (periodics, periodiccnt, active);
1480	}	1813	}
		1814	}
1481		1815
1482	ev_stop (EV_A_ (W)w);	1816	ev_stop (EV_A_ (W)w);
1483	}	1817	}
1484		1818
1485	void	1819	void noinline
1486	ev_periodic_again (EV_P_ struct ev_periodic *w)	1820	ev_periodic_again (EV_P_ ev_periodic *w)
1487	{	1821	{
1488	/* TODO: use adjustheap and recalculation */	1822	/* TODO: use adjustheap and recalculation */
1489	ev_periodic_stop (EV_A_ w);	1823	ev_periodic_stop (EV_A_ w);
1490	ev_periodic_start (EV_A_ w);	1824	ev_periodic_start (EV_A_ w);
1491	}	1825	}
1492	#endif	1826	#endif
1493		1827
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	1828	#ifndef SA_RESTART
1561	# define SA_RESTART 0	1829	# define SA_RESTART 0
1562	#endif	1830	#endif
1563		1831
1564	void	1832	void noinline
1565	ev_signal_start (EV_P_ struct ev_signal *w)	1833	ev_signal_start (EV_P_ ev_signal *w)
1566	{	1834	{
1567	#if EV_MULTIPLICITY	1835	#if EV_MULTIPLICITY
1568	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1836	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1569	#endif	1837	#endif
1570	if (expect_false (ev_is_active (w)))	1838	if (expect_false (ev_is_active (w)))
1571	return;	1839	return;
1572		1840
1573	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1841	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1574		1842
		1843	{
		1844	#ifndef _WIN32
		1845	sigset_t full, prev;
		1846	sigfillset (&full);
		1847	sigprocmask (SIG_SETMASK, &full, &prev);
		1848	#endif
		1849
		1850	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1851
		1852	#ifndef _WIN32
		1853	sigprocmask (SIG_SETMASK, &prev, 0);
		1854	#endif
		1855	}
		1856
1575	ev_start (EV_A_ (W)w, 1);	1857	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);	1858	wlist_add (&signals [w->signum - 1].head, (WL)w);
1578		1859
1579	if (!((WL)w)->next)	1860	if (!((WL)w)->next)
1580	{	1861	{
1581	#if _WIN32	1862	#if _WIN32
1582	signal (w->signum, sighandler);	1863	signal (w->signum, sighandler);
…		…
1588	sigaction (w->signum, &sa, 0);	1869	sigaction (w->signum, &sa, 0);
1589	#endif	1870	#endif
1590	}	1871	}
1591	}	1872	}
1592		1873
1593	void	1874	void noinline
1594	ev_signal_stop (EV_P_ struct ev_signal *w)	1875	ev_signal_stop (EV_P_ ev_signal *w)
1595	{	1876	{
1596	ev_clear_pending (EV_A_ (W)w);	1877	clear_pending (EV_A_ (W)w);
1597	if (expect_false (!ev_is_active (w)))	1878	if (expect_false (!ev_is_active (w)))
1598	return;	1879	return;
1599		1880
1600	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1881	wlist_del (&signals [w->signum - 1].head, (WL)w);
1601	ev_stop (EV_A_ (W)w);	1882	ev_stop (EV_A_ (W)w);
1602		1883
1603	if (!signals [w->signum - 1].head)	1884	if (!signals [w->signum - 1].head)
1604	signal (w->signum, SIG_DFL);	1885	signal (w->signum, SIG_DFL);
1605	}	1886	}
1606		1887
1607	void	1888	void
1608	ev_child_start (EV_P_ struct ev_child *w)	1889	ev_child_start (EV_P_ ev_child *w)
1609	{	1890	{
1610	#if EV_MULTIPLICITY	1891	#if EV_MULTIPLICITY
1611	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1892	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1612	#endif	1893	#endif
1613	if (expect_false (ev_is_active (w)))	1894	if (expect_false (ev_is_active (w)))
1614	return;	1895	return;
1615		1896
1616	ev_start (EV_A_ (W)w, 1);	1897	ev_start (EV_A_ (W)w, 1);
1617	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1898	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1618	}	1899	}
1619		1900
1620	void	1901	void
1621	ev_child_stop (EV_P_ struct ev_child *w)	1902	ev_child_stop (EV_P_ ev_child *w)
1622	{	1903	{
1623	ev_clear_pending (EV_A_ (W)w);	1904	clear_pending (EV_A_ (W)w);
1624	if (expect_false (!ev_is_active (w)))	1905	if (expect_false (!ev_is_active (w)))
1625	return;	1906	return;
1626		1907
1627	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1908	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1628	ev_stop (EV_A_ (W)w);	1909	ev_stop (EV_A_ (W)w);
1629	}	1910	}
1630		1911
		1912	#if EV_STAT_ENABLE
		1913
		1914	# ifdef _WIN32
		1915	# undef lstat
		1916	# define lstat(a,b) _stati64 (a,b)
		1917	# endif
		1918
		1919	#define DEF_STAT_INTERVAL 5.0074891
		1920	#define MIN_STAT_INTERVAL 0.1074891
		1921
		1922	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1923
		1924	#if EV_USE_INOTIFY
		1925	# define EV_INOTIFY_BUFSIZE 8192
		1926
		1927	static void noinline
		1928	infy_add (EV_P_ ev_stat *w)
		1929	{
		1930	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);
		1931
		1932	if (w->wd < 0)
		1933	{
		1934	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1935
		1936	/* monitor some parent directory for speedup hints */
		1937	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1938	{
		1939	char path [4096];
		1940	strcpy (path, w->path);
		1941
		1942	do
		1943	{
		1944	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1945	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1946
		1947	char *pend = strrchr (path, '/');
		1948
		1949	if (!pend)
		1950	break; /* whoops, no '/', complain to your admin */
		1951
		1952	*pend = 0;
		1953	w->wd = inotify_add_watch (fs_fd, path, mask);
		1954	}
		1955	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1956	}
		1957	}
		1958	else
		1959	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1960
		1961	if (w->wd >= 0)
		1962	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1963	}
		1964
		1965	static void noinline
		1966	infy_del (EV_P_ ev_stat *w)
		1967	{
		1968	int slot;
		1969	int wd = w->wd;
		1970
		1971	if (wd < 0)
		1972	return;
		1973
		1974	w->wd = -2;
		1975	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1976	wlist_del (&fs_hash [slot].head, (WL)w);
		1977
		1978	/* remove this watcher, if others are watching it, they will rearm */
		1979	inotify_rm_watch (fs_fd, wd);
		1980	}
		1981
		1982	static void noinline
		1983	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1984	{
		1985	if (slot < 0)
		1986	/* overflow, need to check for all hahs slots */
		1987	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1988	infy_wd (EV_A_ slot, wd, ev);
		1989	else
		1990	{
		1991	WL w_;
		1992
		1993	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1994	{
		1995	ev_stat *w = (ev_stat *)w_;
		1996	w_ = w_->next; /* lets us remove this watcher and all before it */
		1997
		1998	if (w->wd == wd || wd == -1)
		1999	{
		2000	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		2001	{
		2002	w->wd = -1;
		2003	infy_add (EV_A_ w); /* re-add, no matter what */
		2004	}
		2005
		2006	stat_timer_cb (EV_A_ &w->timer, 0);
		2007	}
		2008	}
		2009	}
		2010	}
		2011
		2012	static void
		2013	infy_cb (EV_P_ ev_io *w, int revents)
		2014	{
		2015	char buf [EV_INOTIFY_BUFSIZE];
		2016	struct inotify_event *ev = (struct inotify_event *)buf;
		2017	int ofs;
		2018	int len = read (fs_fd, buf, sizeof (buf));
		2019
		2020	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2021	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2022	}
		2023
		2024	void inline_size
		2025	infy_init (EV_P)
		2026	{
		2027	if (fs_fd != -2)
		2028	return;
		2029
		2030	fs_fd = inotify_init ();
		2031
		2032	if (fs_fd >= 0)
		2033	{
		2034	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2035	ev_set_priority (&fs_w, EV_MAXPRI);
		2036	ev_io_start (EV_A_ &fs_w);
		2037	}
		2038	}
		2039
		2040	void inline_size
		2041	infy_fork (EV_P)
		2042	{
		2043	int slot;
		2044
		2045	if (fs_fd < 0)
		2046	return;
		2047
		2048	close (fs_fd);
		2049	fs_fd = inotify_init ();
		2050
		2051	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2052	{
		2053	WL w_ = fs_hash [slot].head;
		2054	fs_hash [slot].head = 0;
		2055
		2056	while (w_)
		2057	{
		2058	ev_stat *w = (ev_stat *)w_;
		2059	w_ = w_->next; /* lets us add this watcher */
		2060
		2061	w->wd = -1;
		2062
		2063	if (fs_fd >= 0)
		2064	infy_add (EV_A_ w); /* re-add, no matter what */
		2065	else
		2066	ev_timer_start (EV_A_ &w->timer);
		2067	}
		2068
		2069	}
		2070	}
		2071
		2072	#endif
		2073
		2074	void
		2075	ev_stat_stat (EV_P_ ev_stat *w)
		2076	{
		2077	if (lstat (w->path, &w->attr) < 0)
		2078	w->attr.st_nlink = 0;
		2079	else if (!w->attr.st_nlink)
		2080	w->attr.st_nlink = 1;
		2081	}
		2082
		2083	static void noinline
		2084	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2085	{
		2086	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2087
		2088	/* we copy this here each the time so that */
		2089	/* prev has the old value when the callback gets invoked */
		2090	w->prev = w->attr;
		2091	ev_stat_stat (EV_A_ w);
		2092
		2093	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2094	if (
		2095	w->prev.st_dev != w->attr.st_dev
		2096	|| w->prev.st_ino != w->attr.st_ino
		2097	|| w->prev.st_mode != w->attr.st_mode
		2098	|| w->prev.st_nlink != w->attr.st_nlink
		2099	|| w->prev.st_uid != w->attr.st_uid
		2100	|| w->prev.st_gid != w->attr.st_gid
		2101	|| w->prev.st_rdev != w->attr.st_rdev
		2102	|| w->prev.st_size != w->attr.st_size
		2103	|| w->prev.st_atime != w->attr.st_atime
		2104	|| w->prev.st_mtime != w->attr.st_mtime
		2105	|| w->prev.st_ctime != w->attr.st_ctime
		2106	) {
		2107	#if EV_USE_INOTIFY
		2108	infy_del (EV_A_ w);
		2109	infy_add (EV_A_ w);
		2110	ev_stat_stat (EV_A_ w); /* avoid race... */
		2111	#endif
		2112
		2113	ev_feed_event (EV_A_ w, EV_STAT);
		2114	}
		2115	}
		2116
		2117	void
		2118	ev_stat_start (EV_P_ ev_stat *w)
		2119	{
		2120	if (expect_false (ev_is_active (w)))
		2121	return;
		2122
		2123	/* since we use memcmp, we need to clear any padding data etc. */
		2124	memset (&w->prev, 0, sizeof (ev_statdata));
		2125	memset (&w->attr, 0, sizeof (ev_statdata));
		2126
		2127	ev_stat_stat (EV_A_ w);
		2128
		2129	if (w->interval < MIN_STAT_INTERVAL)
		2130	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2131
		2132	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2133	ev_set_priority (&w->timer, ev_priority (w));
		2134
		2135	#if EV_USE_INOTIFY
		2136	infy_init (EV_A);
		2137
		2138	if (fs_fd >= 0)
		2139	infy_add (EV_A_ w);
		2140	else
		2141	#endif
		2142	ev_timer_start (EV_A_ &w->timer);
		2143
		2144	ev_start (EV_A_ (W)w, 1);
		2145	}
		2146
		2147	void
		2148	ev_stat_stop (EV_P_ ev_stat *w)
		2149	{
		2150	clear_pending (EV_A_ (W)w);
		2151	if (expect_false (!ev_is_active (w)))
		2152	return;
		2153
		2154	#if EV_USE_INOTIFY
		2155	infy_del (EV_A_ w);
		2156	#endif
		2157	ev_timer_stop (EV_A_ &w->timer);
		2158
		2159	ev_stop (EV_A_ (W)w);
		2160	}
		2161	#endif
		2162
		2163	#if EV_IDLE_ENABLE
		2164	void
		2165	ev_idle_start (EV_P_ ev_idle *w)
		2166	{
		2167	if (expect_false (ev_is_active (w)))
		2168	return;
		2169
		2170	pri_adjust (EV_A_ (W)w);
		2171
		2172	{
		2173	int active = ++idlecnt [ABSPRI (w)];
		2174
		2175	++idleall;
		2176	ev_start (EV_A_ (W)w, active);
		2177
		2178	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2179	idles [ABSPRI (w)][active - 1] = w;
		2180	}
		2181	}
		2182
		2183	void
		2184	ev_idle_stop (EV_P_ ev_idle *w)
		2185	{
		2186	clear_pending (EV_A_ (W)w);
		2187	if (expect_false (!ev_is_active (w)))
		2188	return;
		2189
		2190	{
		2191	int active = ((W)w)->active;
		2192
		2193	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2194	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2195
		2196	ev_stop (EV_A_ (W)w);
		2197	--idleall;
		2198	}
		2199	}
		2200	#endif
		2201
		2202	void
		2203	ev_prepare_start (EV_P_ ev_prepare *w)
		2204	{
		2205	if (expect_false (ev_is_active (w)))
		2206	return;
		2207
		2208	ev_start (EV_A_ (W)w, ++preparecnt);
		2209	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2210	prepares [preparecnt - 1] = w;
		2211	}
		2212
		2213	void
		2214	ev_prepare_stop (EV_P_ ev_prepare *w)
		2215	{
		2216	clear_pending (EV_A_ (W)w);
		2217	if (expect_false (!ev_is_active (w)))
		2218	return;
		2219
		2220	{
		2221	int active = ((W)w)->active;
		2222	prepares [active - 1] = prepares [--preparecnt];
		2223	((W)prepares [active - 1])->active = active;
		2224	}
		2225
		2226	ev_stop (EV_A_ (W)w);
		2227	}
		2228
		2229	void
		2230	ev_check_start (EV_P_ ev_check *w)
		2231	{
		2232	if (expect_false (ev_is_active (w)))
		2233	return;
		2234
		2235	ev_start (EV_A_ (W)w, ++checkcnt);
		2236	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2237	checks [checkcnt - 1] = w;
		2238	}
		2239
		2240	void
		2241	ev_check_stop (EV_P_ ev_check *w)
		2242	{
		2243	clear_pending (EV_A_ (W)w);
		2244	if (expect_false (!ev_is_active (w)))
		2245	return;
		2246
		2247	{
		2248	int active = ((W)w)->active;
		2249	checks [active - 1] = checks [--checkcnt];
		2250	((W)checks [active - 1])->active = active;
		2251	}
		2252
		2253	ev_stop (EV_A_ (W)w);
		2254	}
		2255
		2256	#if EV_EMBED_ENABLE
		2257	void noinline
		2258	ev_embed_sweep (EV_P_ ev_embed *w)
		2259	{
		2260	ev_loop (w->other, EVLOOP_NONBLOCK);
		2261	}
		2262
		2263	static void
		2264	embed_io_cb (EV_P_ ev_io *io, int revents)
		2265	{
		2266	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2267
		2268	if (ev_cb (w))
		2269	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2270	else
		2271	ev_embed_sweep (loop, w);
		2272	}
		2273
		2274	static void
		2275	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2276	{
		2277	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2278
		2279	fd_reify (w->other);
		2280	}
		2281
		2282	void
		2283	ev_embed_start (EV_P_ ev_embed *w)
		2284	{
		2285	if (expect_false (ev_is_active (w)))
		2286	return;
		2287
		2288	{
		2289	struct ev_loop *loop = w->other;
		2290	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2291	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
		2292	}
		2293
		2294	ev_set_priority (&w->io, ev_priority (w));
		2295	ev_io_start (EV_A_ &w->io);
		2296
		2297	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2298	ev_set_priority (&w->prepare, EV_MINPRI);
		2299	ev_prepare_start (EV_A_ &w->prepare);
		2300
		2301	ev_start (EV_A_ (W)w, 1);
		2302	}
		2303
		2304	void
		2305	ev_embed_stop (EV_P_ ev_embed *w)
		2306	{
		2307	clear_pending (EV_A_ (W)w);
		2308	if (expect_false (!ev_is_active (w)))
		2309	return;
		2310
		2311	ev_io_stop (EV_A_ &w->io);
		2312	ev_prepare_stop (EV_A_ &w->prepare);
		2313
		2314	ev_stop (EV_A_ (W)w);
		2315	}
		2316	#endif
		2317
		2318	#if EV_FORK_ENABLE
		2319	void
		2320	ev_fork_start (EV_P_ ev_fork *w)
		2321	{
		2322	if (expect_false (ev_is_active (w)))
		2323	return;
		2324
		2325	ev_start (EV_A_ (W)w, ++forkcnt);
		2326	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2327	forks [forkcnt - 1] = w;
		2328	}
		2329
		2330	void
		2331	ev_fork_stop (EV_P_ ev_fork *w)
		2332	{
		2333	clear_pending (EV_A_ (W)w);
		2334	if (expect_false (!ev_is_active (w)))
		2335	return;
		2336
		2337	{
		2338	int active = ((W)w)->active;
		2339	forks [active - 1] = forks [--forkcnt];
		2340	((W)forks [active - 1])->active = active;
		2341	}
		2342
		2343	ev_stop (EV_A_ (W)w);
		2344	}
		2345	#endif
		2346
1631	/*****************************************************************************/	2347	/*****************************************************************************/
1632		2348
1633	struct ev_once	2349	struct ev_once
1634	{	2350	{
1635	struct ev_io io;	2351	ev_io io;
1636	struct ev_timer to;	2352	ev_timer to;
1637	void (*cb)(int revents, void *arg);	2353	void (*cb)(int revents, void *arg);
1638	void *arg;	2354	void *arg;
1639	};	2355	};
1640		2356
1641	static void	2357	static void
…		…
1650		2366
1651	cb (revents, arg);	2367	cb (revents, arg);
1652	}	2368	}
1653		2369
1654	static void	2370	static void
1655	once_cb_io (EV_P_ struct ev_io *w, int revents)	2371	once_cb_io (EV_P_ ev_io *w, int revents)
1656	{	2372	{
1657	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2373	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1658	}	2374	}
1659		2375
1660	static void	2376	static void
1661	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2377	once_cb_to (EV_P_ ev_timer *w, int revents)
1662	{	2378	{
1663	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2379	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1664	}	2380	}
1665		2381
1666	void	2382	void
…		…
1690	ev_timer_set (&once->to, timeout, 0.);	2406	ev_timer_set (&once->to, timeout, 0.);
1691	ev_timer_start (EV_A_ &once->to);	2407	ev_timer_start (EV_A_ &once->to);
1692	}	2408	}
1693	}	2409	}
1694		2410
		2411	#if EV_MULTIPLICITY
		2412	#include "ev_wrap.h"
		2413	#endif
		2414
1695	#ifdef __cplusplus	2415	#ifdef __cplusplus
1696	}	2416	}
1697	#endif	2417	#endif
1698		2418

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