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Comparing libev/ev.c (file contents):
Revision 1.126 by root, Sun Nov 18 01:25:23 2007 UTC vs.
Revision 1.197 by root, Sat Dec 22 15:20:13 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
…		…
50	# ifndef EV_USE_REALTIME	54	# ifndef EV_USE_REALTIME
51	# define EV_USE_REALTIME 0	55	# define EV_USE_REALTIME 0
52	# endif	56	# endif
53	# endif	57	# endif
54		58
55	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)	59	# ifndef EV_USE_NANOSLEEP
		60	# if HAVE_NANOSLEEP
56	# define EV_USE_SELECT 1	61	# define EV_USE_NANOSLEEP 1
57	# else	62	# else
58	# define EV_USE_SELECT 0	63	# define EV_USE_NANOSLEEP 0
		64	# endif
59	# endif	65	# endif
60		66
61	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)	67	# ifndef EV_USE_SELECT
		68	# if HAVE_SELECT && HAVE_SYS_SELECT_H
62	# define EV_USE_POLL 1	69	# define EV_USE_SELECT 1
63	# else	70	# else
64	# define EV_USE_POLL 0	71	# define EV_USE_SELECT 0
		72	# endif
65	# endif	73	# endif
66		74
67	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)	75	# ifndef EV_USE_POLL
		76	# if HAVE_POLL && HAVE_POLL_H
68	# define EV_USE_EPOLL 1	77	# define EV_USE_POLL 1
69	# else	78	# else
70	# define EV_USE_EPOLL 0	79	# define EV_USE_POLL 0
		80	# endif
71	# endif	81	# endif
72		82
73	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)	83	# ifndef EV_USE_EPOLL
		84	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
74	# define EV_USE_KQUEUE 1	85	# define EV_USE_EPOLL 1
75	# else	86	# else
76	# define EV_USE_KQUEUE 0	87	# define EV_USE_EPOLL 0
		88	# endif
77	# endif	89	# endif
78		90
79	# if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT)	91	# ifndef EV_USE_KQUEUE
		92	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		93	# define EV_USE_KQUEUE 1
		94	# else
		95	# define EV_USE_KQUEUE 0
		96	# endif
		97	# endif
		98
		99	# ifndef EV_USE_PORT
		100	# if HAVE_PORT_H && HAVE_PORT_CREATE
80	# define EV_USE_PORT 1	101	# define EV_USE_PORT 1
81	# else	102	# else
82	# define EV_USE_PORT 0	103	# define EV_USE_PORT 0
		104	# endif
		105	# endif
		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
83	# endif	113	# endif
84		114
85	#endif	115	#endif
86		116
87	#include <math.h>	117	#include <math.h>
…		…
96	#include <sys/types.h>	126	#include <sys/types.h>
97	#include <time.h>	127	#include <time.h>
98		128
99	#include <signal.h>	129	#include <signal.h>
100		130
		131	#ifdef EV_H
		132	# include EV_H
		133	#else
		134	# include "ev.h"
		135	#endif
		136
101	#ifndef _WIN32	137	#ifndef _WIN32
102	# include <unistd.h>
103	# include <sys/time.h>	138	# include <sys/time.h>
104	# include <sys/wait.h>	139	# include <sys/wait.h>
		140	# include <unistd.h>
105	#else	141	#else
106	# define WIN32_LEAN_AND_MEAN	142	# define WIN32_LEAN_AND_MEAN
107	# include <windows.h>	143	# include <windows.h>
108	# ifndef EV_SELECT_IS_WINSOCKET	144	# ifndef EV_SELECT_IS_WINSOCKET
109	# define EV_SELECT_IS_WINSOCKET 1	145	# define EV_SELECT_IS_WINSOCKET 1
…		…
118		154
119	#ifndef EV_USE_REALTIME	155	#ifndef EV_USE_REALTIME
120	# define EV_USE_REALTIME 0	156	# define EV_USE_REALTIME 0
121	#endif	157	#endif
122		158
		159	#ifndef EV_USE_NANOSLEEP
		160	# define EV_USE_NANOSLEEP 0
		161	#endif
		162
123	#ifndef EV_USE_SELECT	163	#ifndef EV_USE_SELECT
124	# define EV_USE_SELECT 1	164	# define EV_USE_SELECT 1
125	#endif	165	#endif
126		166
127	#ifndef EV_USE_POLL	167	#ifndef EV_USE_POLL
…		…
142		182
143	#ifndef EV_USE_PORT	183	#ifndef EV_USE_PORT
144	# define EV_USE_PORT 0	184	# define EV_USE_PORT 0
145	#endif	185	#endif
146		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
147	/**/	207	/**/
148
149	/* darwin simply cannot be helped */
150	#ifdef __APPLE__
151	# undef EV_USE_POLL
152	# undef EV_USE_KQUEUE
153	#endif
154		208
155	#ifndef CLOCK_MONOTONIC	209	#ifndef CLOCK_MONOTONIC
156	# undef EV_USE_MONOTONIC	210	# undef EV_USE_MONOTONIC
157	# define EV_USE_MONOTONIC 0	211	# define EV_USE_MONOTONIC 0
158	#endif	212	#endif
…		…
160	#ifndef CLOCK_REALTIME	214	#ifndef CLOCK_REALTIME
161	# undef EV_USE_REALTIME	215	# undef EV_USE_REALTIME
162	# define EV_USE_REALTIME 0	216	# define EV_USE_REALTIME 0
163	#endif	217	#endif
164		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
165	#if EV_SELECT_IS_WINSOCKET	234	#if EV_SELECT_IS_WINSOCKET
166	# include <winsock.h>	235	# include <winsock.h>
167	#endif	236	#endif
168		237
169	/**/	238	/**/
170		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
171	#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) */
172	#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) */
173	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
174	/*#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 */
175		253
176	#ifdef EV_H
177	# include EV_H
178	#else
179	# include "ev.h"
180	#endif
181
182	#if __GNUC__ >= 3	254	#if __GNUC__ >= 4
183	# define expect(expr,value) __builtin_expect ((expr),(value))	255	# define expect(expr,value) __builtin_expect ((expr),(value))
184	# define inline static inline	256	# define noinline __attribute__ ((noinline))
185	#else	257	#else
186	# define expect(expr,value) (expr)	258	# define expect(expr,value) (expr)
187	# define inline static	259	# define noinline
		260	# if __STDC_VERSION__ < 199901L
		261	# define inline
		262	# endif
188	#endif	263	#endif
189		264
190	#define expect_false(expr) expect ((expr) != 0, 0)	265	#define expect_false(expr) expect ((expr) != 0, 0)
191	#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
192		274
193	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	275	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
194	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	276	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
195		277
196	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	278	#define EMPTY /* required for microsofts broken pseudo-c compiler */
197	#define EMPTY2(a,b) /* used to suppress some warnings */	279	#define EMPTY2(a,b) /* used to suppress some warnings */
198		280
199	typedef struct ev_watcher *W;	281	typedef ev_watcher *W;
200	typedef struct ev_watcher_list *WL;	282	typedef ev_watcher_list *WL;
201	typedef struct ev_watcher_time *WT;	283	typedef ev_watcher_time *WT;
202		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 */
203	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	287	static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
204		288
205	#ifdef _WIN32	289	#ifdef _WIN32
206	# include "ev_win32.c"	290	# include "ev_win32.c"
207	#endif	291	#endif
208		292
209	/*****************************************************************************/	293	/*****************************************************************************/
210		294
211	static void (*syserr_cb)(const char *msg);	295	static void (*syserr_cb)(const char *msg);
212		296
		297	void
213	void ev_set_syserr_cb (void (*cb)(const char *msg))	298	ev_set_syserr_cb (void (*cb)(const char *msg))
214	{	299	{
215	syserr_cb = cb;	300	syserr_cb = cb;
216	}	301	}
217		302
218	static void	303	static void noinline
219	syserr (const char *msg)	304	syserr (const char *msg)
220	{	305	{
221	if (!msg)	306	if (!msg)
222	msg = "(libev) system error";	307	msg = "(libev) system error";
223		308
…		…
230	}	315	}
231	}	316	}
232		317
233	static void *(*alloc)(void *ptr, long size);	318	static void *(*alloc)(void *ptr, long size);
234		319
		320	void
235	void ev_set_allocator (void *(*cb)(void *ptr, long size))	321	ev_set_allocator (void *(*cb)(void *ptr, long size))
236	{	322	{
237	alloc = cb;	323	alloc = cb;
238	}	324	}
239		325
240	static void *	326	inline_speed void *
241	ev_realloc (void *ptr, long size)	327	ev_realloc (void *ptr, long size)
242	{	328	{
243	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	329	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
244		330
245	if (!ptr && size)	331	if (!ptr && size)
…		…
269	typedef struct	355	typedef struct
270	{	356	{
271	W w;	357	W w;
272	int events;	358	int events;
273	} ANPENDING;	359	} ANPENDING;
		360
		361	#if EV_USE_INOTIFY
		362	typedef struct
		363	{
		364	WL head;
		365	} ANFS;
		366	#endif
274		367
275	#if EV_MULTIPLICITY	368	#if EV_MULTIPLICITY
276		369
277	struct ev_loop	370	struct ev_loop
278	{	371	{
…		…
312	gettimeofday (&tv, 0);	405	gettimeofday (&tv, 0);
313	return tv.tv_sec + tv.tv_usec * 1e-6;	406	return tv.tv_sec + tv.tv_usec * 1e-6;
314	#endif	407	#endif
315	}	408	}
316		409
317	inline ev_tstamp	410	ev_tstamp inline_size
318	get_clock (void)	411	get_clock (void)
319	{	412	{
320	#if EV_USE_MONOTONIC	413	#if EV_USE_MONOTONIC
321	if (expect_true (have_monotonic))	414	if (expect_true (have_monotonic))
322	{	415	{
…		…
335	{	428	{
336	return ev_rt_now;	429	return ev_rt_now;
337	}	430	}
338	#endif	431	#endif
339		432
340	#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	}
341		487
342	#define array_needsize(type,base,cur,cnt,init) \	488	#define array_needsize(type,base,cur,cnt,init) \
343	if (expect_false ((cnt) > cur)) \	489	if (expect_false ((cnt) > (cur))) \
344	{ \	490	{ \
345	int newcnt = cur; \	491	int ocur_ = (cur); \
346	do \	492	(base) = (type *)array_realloc \
347	{ \	493	(sizeof (type), (base), &(cur), (cnt)); \
348	newcnt = array_roundsize (type, newcnt << 1); \	494	init ((base) + (ocur_), (cur) - ocur_); \
349	} \
350	while ((cnt) > newcnt); \
351	\
352	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
353	init (base + cur, newcnt - cur); \
354	cur = newcnt; \
355	}	495	}
356		496
		497	#if 0
357	#define array_slim(type,stem) \	498	#define array_slim(type,stem) \
358	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	499	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
359	{ \	500	{ \
360	stem ## max = array_roundsize (stem ## cnt >> 1); \	501	stem ## max = array_roundsize (stem ## cnt >> 1); \
361	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	502	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
362	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	503	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
363	}	504	}
		505	#endif
364		506
365	#define array_free(stem, idx) \	507	#define array_free(stem, idx) \
366	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;
367		509
368	/*****************************************************************************/	510	/*****************************************************************************/
369		511
370	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
371	anfds_init (ANFD *base, int count)	541	anfds_init (ANFD *base, int count)
372	{	542	{
373	while (count--)	543	while (count--)
374	{	544	{
375	base->head = 0;	545	base->head = 0;
…		…
378		548
379	++base;	549	++base;
380	}	550	}
381	}	551	}
382		552
383	void	553	void inline_speed
384	ev_feed_event (EV_P_ void *w, int revents)
385	{
386	W w_ = (W)w;
387
388	if (expect_false (w_->pending))
389	{
390	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
391	return;
392	}
393
394	w_->pending = ++pendingcnt [ABSPRI (w_)];
395	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
396	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
397	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
398	}
399
400	static void
401	queue_events (EV_P_ W *events, int eventcnt, int type)
402	{
403	int i;
404
405	for (i = 0; i < eventcnt; ++i)
406	ev_feed_event (EV_A_ events [i], type);
407	}
408
409	inline void
410	fd_event (EV_P_ int fd, int revents)	554	fd_event (EV_P_ int fd, int revents)
411	{	555	{
412	ANFD *anfd = anfds + fd;	556	ANFD *anfd = anfds + fd;
413	struct ev_io *w;	557	ev_io *w;
414		558
415	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)
416	{	560	{
417	int ev = w->events & revents;	561	int ev = w->events & revents;
418		562
419	if (ev)	563	if (ev)
420	ev_feed_event (EV_A_ (W)w, ev);	564	ev_feed_event (EV_A_ (W)w, ev);
…		…
422	}	566	}
423		567
424	void	568	void
425	ev_feed_fd_event (EV_P_ int fd, int revents)	569	ev_feed_fd_event (EV_P_ int fd, int revents)
426	{	570	{
		571	if (fd >= 0 && fd < anfdmax)
427	fd_event (EV_A_ fd, revents);	572	fd_event (EV_A_ fd, revents);
428	}	573	}
429		574
430	/*****************************************************************************/	575	void inline_size
431
432	inline void
433	fd_reify (EV_P)	576	fd_reify (EV_P)
434	{	577	{
435	int i;	578	int i;
436		579
437	for (i = 0; i < fdchangecnt; ++i)	580	for (i = 0; i < fdchangecnt; ++i)
438	{	581	{
439	int fd = fdchanges [i];	582	int fd = fdchanges [i];
440	ANFD *anfd = anfds + fd;	583	ANFD *anfd = anfds + fd;
441	struct ev_io *w;	584	ev_io *w;
442		585
443	int events = 0;	586	unsigned char events = 0;
444		587
445	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)
446	events |= w->events;	589	events |= (unsigned char)w->events;
447		590
448	#if EV_SELECT_IS_WINSOCKET	591	#if EV_SELECT_IS_WINSOCKET
449	if (events)	592	if (events)
450	{	593	{
451	unsigned long argp;	594	unsigned long argp;
452	anfd->handle = _get_osfhandle (fd);	595	anfd->handle = _get_osfhandle (fd);
453	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));
454	}	597	}
455	#endif	598	#endif
456		599
		600	{
		601	unsigned char o_events = anfd->events;
		602	unsigned char o_reify = anfd->reify;
		603
457	anfd->reify = 0;	604	anfd->reify = 0;
458
459	method_modify (EV_A_ fd, anfd->events, events);
460	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	}
461	}	610	}
462		611
463	fdchangecnt = 0;	612	fdchangecnt = 0;
464	}	613	}
465		614
466	static void	615	void inline_size
467	fd_change (EV_P_ int fd)	616	fd_change (EV_P_ int fd, int flags)
468	{	617	{
469	if (expect_false (anfds [fd].reify))	618	unsigned char reify = anfds [fd].reify;
470	return;
471
472	anfds [fd].reify = 1;	619	anfds [fd].reify |= flags;
473		620
		621	if (expect_true (!reify))
		622	{
474	++fdchangecnt;	623	++fdchangecnt;
475	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	624	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
476	fdchanges [fdchangecnt - 1] = fd;	625	fdchanges [fdchangecnt - 1] = fd;
		626	}
477	}	627	}
478		628
479	static void	629	void inline_speed
480	fd_kill (EV_P_ int fd)	630	fd_kill (EV_P_ int fd)
481	{	631	{
482	struct ev_io *w;	632	ev_io *w;
483		633
484	while ((w = (struct ev_io *)anfds [fd].head))	634	while ((w = (ev_io *)anfds [fd].head))
485	{	635	{
486	ev_io_stop (EV_A_ w);	636	ev_io_stop (EV_A_ w);
487	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);
488	}	638	}
489	}	639	}
490		640
491	inline int	641	int inline_size
492	fd_valid (int fd)	642	fd_valid (int fd)
493	{	643	{
494	#ifdef _WIN32	644	#ifdef _WIN32
495	return _get_osfhandle (fd) != -1;	645	return _get_osfhandle (fd) != -1;
496	#else	646	#else
497	return fcntl (fd, F_GETFD) != -1;	647	return fcntl (fd, F_GETFD) != -1;
498	#endif	648	#endif
499	}	649	}
500		650
501	/* called on EBADF to verify fds */	651	/* called on EBADF to verify fds */
502	static void	652	static void noinline
503	fd_ebadf (EV_P)	653	fd_ebadf (EV_P)
504	{	654	{
505	int fd;	655	int fd;
506		656
507	for (fd = 0; fd < anfdmax; ++fd)	657	for (fd = 0; fd < anfdmax; ++fd)
…		…
509	if (!fd_valid (fd) == -1 && errno == EBADF)	659	if (!fd_valid (fd) == -1 && errno == EBADF)
510	fd_kill (EV_A_ fd);	660	fd_kill (EV_A_ fd);
511	}	661	}
512		662
513	/* 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 */
514	static void	664	static void noinline
515	fd_enomem (EV_P)	665	fd_enomem (EV_P)
516	{	666	{
517	int fd;	667	int fd;
518		668
519	for (fd = anfdmax; fd--; )	669	for (fd = anfdmax; fd--; )
…		…
522	fd_kill (EV_A_ fd);	672	fd_kill (EV_A_ fd);
523	return;	673	return;
524	}	674	}
525	}	675	}
526		676
527	/* 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 */
528	static void	678	static void noinline
529	fd_rearm_all (EV_P)	679	fd_rearm_all (EV_P)
530	{	680	{
531	int fd;	681	int fd;
532		682
533	/* this should be highly optimised to not do anything but set a flag */
534	for (fd = 0; fd < anfdmax; ++fd)	683	for (fd = 0; fd < anfdmax; ++fd)
535	if (anfds [fd].events)	684	if (anfds [fd].events)
536	{	685	{
537	anfds [fd].events = 0;	686	anfds [fd].events = 0;
538	fd_change (EV_A_ fd);	687	fd_change (EV_A_ fd, EV_IOFDSET | 1);
539	}	688	}
540	}	689	}
541		690
542	/*****************************************************************************/	691	/*****************************************************************************/
543		692
544	static void	693	void inline_speed
545	upheap (WT *heap, int k)	694	upheap (WT *heap, int k)
546	{	695	{
547	WT w = heap [k];	696	WT w = heap [k];
548		697
549	while (k && heap [k >> 1]->at > w->at)	698	while (k)
550	{	699	{
		700	int p = (k - 1) >> 1;
		701
		702	if (heap [p]->at <= w->at)
		703	break;
		704
551	heap [k] = heap [k >> 1];	705	heap [k] = heap [p];
552	((W)heap [k])->active = k + 1;	706	((W)heap [k])->active = k + 1;
553	k >>= 1;	707	k = p;
554	}	708	}
555		709
556	heap [k] = w;	710	heap [k] = w;
557	((W)heap [k])->active = k + 1;	711	((W)heap [k])->active = k + 1;
558
559	}	712	}
560		713
561	static void	714	void inline_speed
562	downheap (WT *heap, int N, int k)	715	downheap (WT *heap, int N, int k)
563	{	716	{
564	WT w = heap [k];	717	WT w = heap [k];
565		718
566	while (k < (N >> 1))	719	for (;;)
567	{	720	{
568	int j = k << 1;	721	int c = (k << 1) + 1;
569		722
570	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	723	if (c >= N)
571	++j;
572
573	if (w->at <= heap [j]->at)
574	break;	724	break;
575		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
576	heap [k] = heap [j];	732	heap [k] = heap [c];
577	((W)heap [k])->active = k + 1;	733	((W)heap [k])->active = k + 1;
		734
578	k = j;	735	k = c;
579	}	736	}
580		737
581	heap [k] = w;	738	heap [k] = w;
582	((W)heap [k])->active = k + 1;	739	((W)heap [k])->active = k + 1;
583	}	740	}
584		741
585	inline void	742	void inline_size
586	adjustheap (WT *heap, int N, int k)	743	adjustheap (WT *heap, int N, int k)
587	{	744	{
588	upheap (heap, k);	745	upheap (heap, k);
589	downheap (heap, N, k);	746	downheap (heap, N, k);
590	}	747	}
…		…
600	static ANSIG *signals;	757	static ANSIG *signals;
601	static int signalmax;	758	static int signalmax;
602		759
603	static int sigpipe [2];	760	static int sigpipe [2];
604	static sig_atomic_t volatile gotsig;	761	static sig_atomic_t volatile gotsig;
605	static struct ev_io sigev;	762	static ev_io sigev;
606		763
607	static void	764	void inline_size
608	signals_init (ANSIG *base, int count)	765	signals_init (ANSIG *base, int count)
609	{	766	{
610	while (count--)	767	while (count--)
611	{	768	{
612	base->head = 0;	769	base->head = 0;
…		…
632	write (sigpipe [1], &signum, 1);	789	write (sigpipe [1], &signum, 1);
633	errno = old_errno;	790	errno = old_errno;
634	}	791	}
635	}	792	}
636		793
637	void	794	void noinline
638	ev_feed_signal_event (EV_P_ int signum)	795	ev_feed_signal_event (EV_P_ int signum)
639	{	796	{
640	WL w;	797	WL w;
641		798
642	#if EV_MULTIPLICITY	799	#if EV_MULTIPLICITY
…		…
653	for (w = signals [signum].head; w; w = w->next)	810	for (w = signals [signum].head; w; w = w->next)
654	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	811	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
655	}	812	}
656		813
657	static void	814	static void
658	sigcb (EV_P_ struct ev_io *iow, int revents)	815	sigcb (EV_P_ ev_io *iow, int revents)
659	{	816	{
660	int signum;	817	int signum;
661		818
662	read (sigpipe [0], &revents, 1);	819	read (sigpipe [0], &revents, 1);
663	gotsig = 0;	820	gotsig = 0;
…		…
665	for (signum = signalmax; signum--; )	822	for (signum = signalmax; signum--; )
666	if (signals [signum].gotsig)	823	if (signals [signum].gotsig)
667	ev_feed_signal_event (EV_A_ signum + 1);	824	ev_feed_signal_event (EV_A_ signum + 1);
668	}	825	}
669		826
670	static void	827	void inline_speed
671	fd_intern (int fd)	828	fd_intern (int fd)
672	{	829	{
673	#ifdef _WIN32	830	#ifdef _WIN32
674	int arg = 1;	831	int arg = 1;
675	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	832	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
677	fcntl (fd, F_SETFD, FD_CLOEXEC);	834	fcntl (fd, F_SETFD, FD_CLOEXEC);
678	fcntl (fd, F_SETFL, O_NONBLOCK);	835	fcntl (fd, F_SETFL, O_NONBLOCK);
679	#endif	836	#endif
680	}	837	}
681		838
682	static void	839	static void noinline
683	siginit (EV_P)	840	siginit (EV_P)
684	{	841	{
685	fd_intern (sigpipe [0]);	842	fd_intern (sigpipe [0]);
686	fd_intern (sigpipe [1]);	843	fd_intern (sigpipe [1]);
687		844
…		…
690	ev_unref (EV_A); /* child watcher should not keep loop alive */	847	ev_unref (EV_A); /* child watcher should not keep loop alive */
691	}	848	}
692		849
693	/*****************************************************************************/	850	/*****************************************************************************/
694		851
695	static struct ev_child *childs [PID_HASHSIZE];	852	static WL childs [EV_PID_HASHSIZE];
696		853
697	#ifndef _WIN32	854	#ifndef _WIN32
698		855
699	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	}
700		872
701	#ifndef WCONTINUED	873	#ifndef WCONTINUED
702	# define WCONTINUED 0	874	# define WCONTINUED 0
703	#endif	875	#endif
704		876
705	static void	877	static void
706	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
707	{
708	struct ev_child *w;
709
710	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
711	if (w->pid == pid || !w->pid)
712	{
713	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
714	w->rpid = pid;
715	w->rstatus = status;
716	ev_feed_event (EV_A_ (W)w, EV_CHILD);
717	}
718	}
719
720	static void
721	childcb (EV_P_ struct ev_signal *sw, int revents)	878	childcb (EV_P_ ev_signal *sw, int revents)
722	{	879	{
723	int pid, status;	880	int pid, status;
724		881
		882	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
725	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	883	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
726	{	884	if (!WCONTINUED
		885	|| errno != EINVAL
		886	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		887	return;
		888
727	/* 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 */
728	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	891	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
729		892
730	child_reap (EV_A_ sw, pid, pid, status);	893	child_reap (EV_A_ sw, pid, pid, status);
		894	if (EV_PID_HASHSIZE > 1)
731	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 */
732	}
733	}	896	}
734		897
735	#endif	898	#endif
736		899
737	/*****************************************************************************/	900	/*****************************************************************************/
…		…
763	{	926	{
764	return EV_VERSION_MINOR;	927	return EV_VERSION_MINOR;
765	}	928	}
766		929
767	/* 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 */
768	static int	931	int inline_size
769	enable_secure (void)	932	enable_secure (void)
770	{	933	{
771	#ifdef _WIN32	934	#ifdef _WIN32
772	return 0;	935	return 0;
773	#else	936	#else
…		…
775	|| getgid () != getegid ();	938	|| getgid () != getegid ();
776	#endif	939	#endif
777	}	940	}
778		941
779	unsigned int	942	unsigned int
780	ev_method (EV_P)	943	ev_supported_backends (void)
781	{	944	{
782	return method;	945	unsigned int flags = 0;
783	}
784		946
785	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	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
		978
		979	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		980	/* please fix it and tell me how to detect the fix */
		981	flags &= ~EVBACKEND_EPOLL;
		982
		983	return flags;
		984	}
		985
		986	unsigned int
		987	ev_backend (EV_P)
		988	{
		989	return backend;
		990	}
		991
		992	unsigned int
		993	ev_loop_count (EV_P)
		994	{
		995	return loop_count;
		996	}
		997
		998	void
		999	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1000	{
		1001	io_blocktime = interval;
		1002	}
		1003
		1004	void
		1005	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1006	{
		1007	timeout_blocktime = interval;
		1008	}
		1009
		1010	static void noinline
786	loop_init (EV_P_ unsigned int flags)	1011	loop_init (EV_P_ unsigned int flags)
787	{	1012	{
788	if (!method)	1013	if (!backend)
789	{	1014	{
790	#if EV_USE_MONOTONIC	1015	#if EV_USE_MONOTONIC
791	{	1016	{
792	struct timespec ts;	1017	struct timespec ts;
793	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1018	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
798	ev_rt_now = ev_time ();	1023	ev_rt_now = ev_time ();
799	mn_now = get_clock ();	1024	mn_now = get_clock ();
800	now_floor = mn_now;	1025	now_floor = mn_now;
801	rtmn_diff = ev_rt_now - mn_now;	1026	rtmn_diff = ev_rt_now - mn_now;
802		1027
803	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))	1028	io_blocktime = 0.;
		1029	timeout_blocktime = 0.;
		1030
		1031	/* pid check not overridable via env */
		1032	#ifndef _WIN32
		1033	if (flags & EVFLAG_FORKCHECK)
		1034	curpid = getpid ();
		1035	#endif
		1036
		1037	if (!(flags & EVFLAG_NOENV)
		1038	&& !enable_secure ()
		1039	&& getenv ("LIBEV_FLAGS"))
804	flags = atoi (getenv ("LIBEV_FLAGS"));	1040	flags = atoi (getenv ("LIBEV_FLAGS"));
805		1041
806	if (!(flags & 0x0000ffff))	1042	if (!(flags & 0x0000ffffUL))
807	flags |= 0x0000ffff;	1043	flags |= ev_recommended_backends ();
808		1044
809	method = 0;	1045	backend = 0;
		1046	backend_fd = -1;
		1047	#if EV_USE_INOTIFY
		1048	fs_fd = -2;
		1049	#endif
		1050
810	#if EV_USE_PORT	1051	#if EV_USE_PORT
811	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);	1052	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
812	#endif	1053	#endif
813	#if EV_USE_KQUEUE	1054	#if EV_USE_KQUEUE
814	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);	1055	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
815	#endif	1056	#endif
816	#if EV_USE_EPOLL	1057	#if EV_USE_EPOLL
817	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);	1058	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
818	#endif	1059	#endif
819	#if EV_USE_POLL	1060	#if EV_USE_POLL
820	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);	1061	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
821	#endif	1062	#endif
822	#if EV_USE_SELECT	1063	#if EV_USE_SELECT
823	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);	1064	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
824	#endif	1065	#endif
825		1066
826	ev_init (&sigev, sigcb);	1067	ev_init (&sigev, sigcb);
827	ev_set_priority (&sigev, EV_MAXPRI);	1068	ev_set_priority (&sigev, EV_MAXPRI);
828	}	1069	}
829	}	1070	}
830		1071
831	static void	1072	static void noinline
832	loop_destroy (EV_P)	1073	loop_destroy (EV_P)
833	{	1074	{
834	int i;	1075	int i;
835		1076
		1077	#if EV_USE_INOTIFY
		1078	if (fs_fd >= 0)
		1079	close (fs_fd);
		1080	#endif
		1081
		1082	if (backend_fd >= 0)
		1083	close (backend_fd);
		1084
836	#if EV_USE_PORT	1085	#if EV_USE_PORT
837	if (method == EVMETHOD_PORT ) port_destroy (EV_A);	1086	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
838	#endif	1087	#endif
839	#if EV_USE_KQUEUE	1088	#if EV_USE_KQUEUE
840	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1089	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
841	#endif	1090	#endif
842	#if EV_USE_EPOLL	1091	#if EV_USE_EPOLL
843	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1092	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
844	#endif	1093	#endif
845	#if EV_USE_POLL	1094	#if EV_USE_POLL
846	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1095	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
847	#endif	1096	#endif
848	#if EV_USE_SELECT	1097	#if EV_USE_SELECT
849	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1098	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
850	#endif	1099	#endif
851		1100
852	for (i = NUMPRI; i--; )	1101	for (i = NUMPRI; i--; )
		1102	{
853	array_free (pending, [i]);	1103	array_free (pending, [i]);
		1104	#if EV_IDLE_ENABLE
		1105	array_free (idle, [i]);
		1106	#endif
		1107	}
		1108
		1109	ev_free (anfds); anfdmax = 0;
854		1110
855	/* have to use the microsoft-never-gets-it-right macro */	1111	/* have to use the microsoft-never-gets-it-right macro */
856	array_free (fdchange, EMPTY0);	1112	array_free (fdchange, EMPTY);
857	array_free (timer, EMPTY0);	1113	array_free (timer, EMPTY);
858	#if EV_PERIODICS	1114	#if EV_PERIODIC_ENABLE
859	array_free (periodic, EMPTY0);	1115	array_free (periodic, EMPTY);
860	#endif	1116	#endif
		1117	#if EV_FORK_ENABLE
861	array_free (idle, EMPTY0);	1118	array_free (fork, EMPTY);
		1119	#endif
862	array_free (prepare, EMPTY0);	1120	array_free (prepare, EMPTY);
863	array_free (check, EMPTY0);	1121	array_free (check, EMPTY);
864		1122
865	method = 0;	1123	backend = 0;
866	}	1124	}
867		1125
868	static void	1126	void inline_size infy_fork (EV_P);
		1127
		1128	void inline_size
869	loop_fork (EV_P)	1129	loop_fork (EV_P)
870	{	1130	{
871	#if EV_USE_PORT	1131	#if EV_USE_PORT
872	if (method == EVMETHOD_PORT ) port_fork (EV_A);	1132	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
873	#endif	1133	#endif
874	#if EV_USE_KQUEUE	1134	#if EV_USE_KQUEUE
875	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1135	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
876	#endif	1136	#endif
877	#if EV_USE_EPOLL	1137	#if EV_USE_EPOLL
878	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1138	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1139	#endif
		1140	#if EV_USE_INOTIFY
		1141	infy_fork (EV_A);
879	#endif	1142	#endif
880		1143
881	if (ev_is_active (&sigev))	1144	if (ev_is_active (&sigev))
882	{	1145	{
883	/* default loop */	1146	/* default loop */
…		…
904		1167
905	memset (loop, 0, sizeof (struct ev_loop));	1168	memset (loop, 0, sizeof (struct ev_loop));
906		1169
907	loop_init (EV_A_ flags);	1170	loop_init (EV_A_ flags);
908		1171
909	if (ev_method (EV_A))	1172	if (ev_backend (EV_A))
910	return loop;	1173	return loop;
911		1174
912	return 0;	1175	return 0;
913	}	1176	}
914		1177
…		…
947	ev_default_loop_ptr = 1;	1210	ev_default_loop_ptr = 1;
948	#endif	1211	#endif
949		1212
950	loop_init (EV_A_ flags);	1213	loop_init (EV_A_ flags);
951		1214
952	if (ev_method (EV_A))	1215	if (ev_backend (EV_A))
953	{	1216	{
954	siginit (EV_A);	1217	siginit (EV_A);
955		1218
956	#ifndef _WIN32	1219	#ifndef _WIN32
957	ev_signal_init (&childev, childcb, SIGCHLD);	1220	ev_signal_init (&childev, childcb, SIGCHLD);
…		…
993	{	1256	{
994	#if EV_MULTIPLICITY	1257	#if EV_MULTIPLICITY
995	struct ev_loop *loop = ev_default_loop_ptr;	1258	struct ev_loop *loop = ev_default_loop_ptr;
996	#endif	1259	#endif
997		1260
998	if (method)	1261	if (backend)
999	postfork = 1;	1262	postfork = 1;
1000	}	1263	}
1001		1264
1002	/*****************************************************************************/	1265	/*****************************************************************************/
1003		1266
1004	static int	1267	void
1005	any_pending (EV_P)	1268	ev_invoke (EV_P_ void *w, int revents)
1006	{	1269	{
1007	int pri;	1270	EV_CB_INVOKE ((W)w, revents);
1008
1009	for (pri = NUMPRI; pri--; )
1010	if (pendingcnt [pri])
1011	return 1;
1012
1013	return 0;
1014	}	1271	}
1015		1272
1016	inline void	1273	void inline_speed
1017	call_pending (EV_P)	1274	call_pending (EV_P)
1018	{	1275	{
1019	int pri;	1276	int pri;
1020		1277
1021	for (pri = NUMPRI; pri--; )	1278	for (pri = NUMPRI; pri--; )
…		…
1023	{	1280	{
1024	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1281	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1025		1282
1026	if (expect_true (p->w))	1283	if (expect_true (p->w))
1027	{	1284	{
		1285	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1286
1028	p->w->pending = 0;	1287	p->w->pending = 0;
1029	EV_CB_INVOKE (p->w, p->events);	1288	EV_CB_INVOKE (p->w, p->events);
1030	}	1289	}
1031	}	1290	}
1032	}	1291	}
1033		1292
1034	inline void	1293	void inline_size
1035	timers_reify (EV_P)	1294	timers_reify (EV_P)
1036	{	1295	{
1037	while (timercnt && ((WT)timers [0])->at <= mn_now)	1296	while (timercnt && ((WT)timers [0])->at <= mn_now)
1038	{	1297	{
1039	struct ev_timer *w = timers [0];	1298	ev_timer *w = (ev_timer *)timers [0];
1040		1299
1041	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1300	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1042		1301
1043	/* first reschedule or stop timer */	1302	/* first reschedule or stop timer */
1044	if (w->repeat)	1303	if (w->repeat)
1045	{	1304	{
1046	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1305	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1047		1306
1048	((WT)w)->at += w->repeat;	1307	((WT)w)->at += w->repeat;
1049	if (((WT)w)->at < mn_now)	1308	if (((WT)w)->at < mn_now)
1050	((WT)w)->at = mn_now;	1309	((WT)w)->at = mn_now;
1051		1310
1052	downheap ((WT *)timers, timercnt, 0);	1311	downheap (timers, timercnt, 0);
1053	}	1312	}
1054	else	1313	else
1055	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1314	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1056		1315
1057	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1316	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1058	}	1317	}
1059	}	1318	}
1060		1319
1061	#if EV_PERIODICS	1320	#if EV_PERIODIC_ENABLE
1062	inline void	1321	void inline_size
1063	periodics_reify (EV_P)	1322	periodics_reify (EV_P)
1064	{	1323	{
1065	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1324	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1066	{	1325	{
1067	struct ev_periodic *w = periodics [0];	1326	ev_periodic *w = (ev_periodic *)periodics [0];
1068		1327
1069	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1328	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1070		1329
1071	/* first reschedule or stop timer */	1330	/* first reschedule or stop timer */
1072	if (w->reschedule_cb)	1331	if (w->reschedule_cb)
1073	{	1332	{
1074	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1333	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1075	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1334	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1076	downheap ((WT *)periodics, periodiccnt, 0);	1335	downheap (periodics, periodiccnt, 0);
1077	}	1336	}
1078	else if (w->interval)	1337	else if (w->interval)
1079	{	1338	{
1080	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1339	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1340	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1081	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1341	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1082	downheap ((WT *)periodics, periodiccnt, 0);	1342	downheap (periodics, periodiccnt, 0);
1083	}	1343	}
1084	else	1344	else
1085	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1345	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1086		1346
1087	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1347	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1088	}	1348	}
1089	}	1349	}
1090		1350
1091	static void	1351	static void noinline
1092	periodics_reschedule (EV_P)	1352	periodics_reschedule (EV_P)
1093	{	1353	{
1094	int i;	1354	int i;
1095		1355
1096	/* adjust periodics after time jump */	1356	/* adjust periodics after time jump */
1097	for (i = 0; i < periodiccnt; ++i)	1357	for (i = 0; i < periodiccnt; ++i)
1098	{	1358	{
1099	struct ev_periodic *w = periodics [i];	1359	ev_periodic *w = (ev_periodic *)periodics [i];
1100		1360
1101	if (w->reschedule_cb)	1361	if (w->reschedule_cb)
1102	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1362	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1103	else if (w->interval)	1363	else if (w->interval)
1104	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1364	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1105	}	1365	}
1106		1366
1107	/* now rebuild the heap */	1367	/* now rebuild the heap */
1108	for (i = periodiccnt >> 1; i--; )	1368	for (i = periodiccnt >> 1; i--; )
1109	downheap ((WT *)periodics, periodiccnt, i);	1369	downheap (periodics, periodiccnt, i);
1110	}	1370	}
1111	#endif	1371	#endif
1112		1372
1113	inline int	1373	#if EV_IDLE_ENABLE
1114	time_update_monotonic (EV_P)	1374	void inline_size
		1375	idle_reify (EV_P)
1115	{	1376	{
		1377	if (expect_false (idleall))
		1378	{
		1379	int pri;
		1380
		1381	for (pri = NUMPRI; pri--; )
		1382	{
		1383	if (pendingcnt [pri])
		1384	break;
		1385
		1386	if (idlecnt [pri])
		1387	{
		1388	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1389	break;
		1390	}
		1391	}
		1392	}
		1393	}
		1394	#endif
		1395
		1396	void inline_speed
		1397	time_update (EV_P_ ev_tstamp max_block)
		1398	{
		1399	int i;
		1400
		1401	#if EV_USE_MONOTONIC
		1402	if (expect_true (have_monotonic))
		1403	{
		1404	ev_tstamp odiff = rtmn_diff;
		1405
1116	mn_now = get_clock ();	1406	mn_now = get_clock ();
1117		1407
		1408	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1409	/* interpolate in the meantime */
1118	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1410	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1119	{	1411	{
1120	ev_rt_now = rtmn_diff + mn_now;	1412	ev_rt_now = rtmn_diff + mn_now;
1121	return 0;	1413	return;
1122	}	1414	}
1123	else	1415
1124	{
1125	now_floor = mn_now;	1416	now_floor = mn_now;
1126	ev_rt_now = ev_time ();	1417	ev_rt_now = ev_time ();
1127	return 1;
1128	}
1129	}
1130		1418
1131	inline void	1419	/* loop a few times, before making important decisions.
1132	time_update (EV_P)	1420	* on the choice of "4": one iteration isn't enough,
1133	{	1421	* in case we get preempted during the calls to
1134	int i;	1422	* ev_time and get_clock. a second call is almost guaranteed
1135		1423	* to succeed in that case, though. and looping a few more times
1136	#if EV_USE_MONOTONIC	1424	* doesn't hurt either as we only do this on time-jumps or
1137	if (expect_true (have_monotonic))	1425	* in the unlikely event of having been preempted here.
1138	{	1426	*/
1139	if (time_update_monotonic (EV_A))	1427	for (i = 4; --i; )
1140	{	1428	{
1141	ev_tstamp odiff = rtmn_diff;
1142
1143	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1144	{
1145	rtmn_diff = ev_rt_now - mn_now;	1429	rtmn_diff = ev_rt_now - mn_now;
1146		1430
1147	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1431	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1148	return; /* all is well */	1432	return; /* all is well */
1149		1433
1150	ev_rt_now = ev_time ();	1434	ev_rt_now = ev_time ();
1151	mn_now = get_clock ();	1435	mn_now = get_clock ();
1152	now_floor = mn_now;	1436	now_floor = mn_now;
1153	}	1437	}
1154		1438
1155	# if EV_PERIODICS	1439	# if EV_PERIODIC_ENABLE
		1440	periodics_reschedule (EV_A);
		1441	# endif
		1442	/* no timer adjustment, as the monotonic clock doesn't jump */
		1443	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1444	}
		1445	else
		1446	#endif
		1447	{
		1448	ev_rt_now = ev_time ();
		1449
		1450	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1451	{
		1452	#if EV_PERIODIC_ENABLE
1156	periodics_reschedule (EV_A);	1453	periodics_reschedule (EV_A);
1157	# endif	1454	#endif
1158	/* no timer adjustment, as the monotonic clock doesn't jump */
1159	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1160	}
1161	}
1162	else
1163	#endif
1164	{
1165	ev_rt_now = ev_time ();
1166
1167	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1168	{
1169	#if EV_PERIODICS
1170	periodics_reschedule (EV_A);
1171	#endif
1172
1173	/* adjust timers. this is easy, as the offset is the same for all */	1455	/* adjust timers. this is easy, as the offset is the same for all of them */
1174	for (i = 0; i < timercnt; ++i)	1456	for (i = 0; i < timercnt; ++i)
1175	((WT)timers [i])->at += ev_rt_now - mn_now;	1457	((WT)timers [i])->at += ev_rt_now - mn_now;
1176	}	1458	}
1177		1459
1178	mn_now = ev_rt_now;	1460	mn_now = ev_rt_now;
…		…
1194	static int loop_done;	1476	static int loop_done;
1195		1477
1196	void	1478	void
1197	ev_loop (EV_P_ int flags)	1479	ev_loop (EV_P_ int flags)
1198	{	1480	{
1199	double block;
1200	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1481	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1482	? EVUNLOOP_ONE
		1483	: EVUNLOOP_CANCEL;
1201		1484
1202	while (activecnt)	1485	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1486
		1487	do
1203	{	1488	{
		1489	#ifndef _WIN32
		1490	if (expect_false (curpid)) /* penalise the forking check even more */
		1491	if (expect_false (getpid () != curpid))
		1492	{
		1493	curpid = getpid ();
		1494	postfork = 1;
		1495	}
		1496	#endif
		1497
		1498	#if EV_FORK_ENABLE
		1499	/* we might have forked, so queue fork handlers */
		1500	if (expect_false (postfork))
		1501	if (forkcnt)
		1502	{
		1503	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1504	call_pending (EV_A);
		1505	}
		1506	#endif
		1507
1204	/* queue check watchers (and execute them) */	1508	/* queue prepare watchers (and execute them) */
1205	if (expect_false (preparecnt))	1509	if (expect_false (preparecnt))
1206	{	1510	{
1207	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1511	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1208	call_pending (EV_A);	1512	call_pending (EV_A);
1209	}	1513	}
1210		1514
		1515	if (expect_false (!activecnt))
		1516	break;
		1517
1211	/* we might have forked, so reify kernel state if necessary */	1518	/* we might have forked, so reify kernel state if necessary */
1212	if (expect_false (postfork))	1519	if (expect_false (postfork))
1213	loop_fork (EV_A);	1520	loop_fork (EV_A);
1214		1521
1215	/* update fd-related kernel structures */	1522	/* update fd-related kernel structures */
1216	fd_reify (EV_A);	1523	fd_reify (EV_A);
1217		1524
1218	/* calculate blocking time */	1525	/* calculate blocking time */
		1526	{
		1527	ev_tstamp waittime = 0.;
		1528	ev_tstamp sleeptime = 0.;
1219		1529
1220	/* we only need this for !monotonic clock or timers, but as we basically	1530	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1221	always have timers, we just calculate it always */
1222	#if EV_USE_MONOTONIC
1223	if (expect_true (have_monotonic))
1224	time_update_monotonic (EV_A);
1225	else
1226	#endif
1227	{	1531	{
1228	ev_rt_now = ev_time ();	1532	/* update time to cancel out callback processing overhead */
1229	mn_now = ev_rt_now;	1533	time_update (EV_A_ 1e100);
1230	}
1231		1534
1232	if (flags & EVLOOP_NONBLOCK || idlecnt)
1233	block = 0.;
1234	else
1235	{
1236	block = MAX_BLOCKTIME;	1535	waittime = MAX_BLOCKTIME;
1237		1536
1238	if (timercnt)	1537	if (timercnt)
1239	{	1538	{
1240	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1539	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1241	if (block > to) block = to;	1540	if (waittime > to) waittime = to;
1242	}	1541	}
1243		1542
1244	#if EV_PERIODICS	1543	#if EV_PERIODIC_ENABLE
1245	if (periodiccnt)	1544	if (periodiccnt)
1246	{	1545	{
1247	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1546	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1248	if (block > to) block = to;	1547	if (waittime > to) waittime = to;
1249	}	1548	}
1250	#endif	1549	#endif
1251		1550
1252	if (expect_false (block < 0.)) block = 0.;	1551	if (expect_false (waittime < timeout_blocktime))
		1552	waittime = timeout_blocktime;
		1553
		1554	sleeptime = waittime - backend_fudge;
		1555
		1556	if (expect_true (sleeptime > io_blocktime))
		1557	sleeptime = io_blocktime;
		1558
		1559	if (sleeptime)
		1560	{
		1561	ev_sleep (sleeptime);
		1562	waittime -= sleeptime;
		1563	}
1253	}	1564	}
1254		1565
1255	method_poll (EV_A_ block);	1566	++loop_count;
		1567	backend_poll (EV_A_ waittime);
1256		1568
1257	/* update ev_rt_now, do magic */	1569	/* update ev_rt_now, do magic */
1258	time_update (EV_A);	1570	time_update (EV_A_ waittime + sleeptime);
		1571	}
1259		1572
1260	/* queue pending timers and reschedule them */	1573	/* queue pending timers and reschedule them */
1261	timers_reify (EV_A); /* relative timers called last */	1574	timers_reify (EV_A); /* relative timers called last */
1262	#if EV_PERIODICS	1575	#if EV_PERIODIC_ENABLE
1263	periodics_reify (EV_A); /* absolute timers called first */	1576	periodics_reify (EV_A); /* absolute timers called first */
1264	#endif	1577	#endif
1265		1578
		1579	#if EV_IDLE_ENABLE
1266	/* queue idle watchers unless io or timers are pending */	1580	/* queue idle watchers unless other events are pending */
1267	if (idlecnt && !any_pending (EV_A))	1581	idle_reify (EV_A);
1268	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1582	#endif
1269		1583
1270	/* queue check watchers, to be executed first */	1584	/* queue check watchers, to be executed first */
1271	if (expect_false (checkcnt))	1585	if (expect_false (checkcnt))
1272	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1586	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1273		1587
1274	call_pending (EV_A);	1588	call_pending (EV_A);
1275		1589
1276	if (expect_false (loop_done))
1277	break;
1278	}	1590	}
		1591	while (expect_true (activecnt && !loop_done));
1279		1592
1280	if (loop_done != 2)	1593	if (loop_done == EVUNLOOP_ONE)
1281	loop_done = 0;	1594	loop_done = EVUNLOOP_CANCEL;
1282	}	1595	}
1283		1596
1284	void	1597	void
1285	ev_unloop (EV_P_ int how)	1598	ev_unloop (EV_P_ int how)
1286	{	1599	{
1287	loop_done = how;	1600	loop_done = how;
1288	}	1601	}
1289		1602
1290	/*****************************************************************************/	1603	/*****************************************************************************/
1291		1604
1292	inline void	1605	void inline_size
1293	wlist_add (WL *head, WL elem)	1606	wlist_add (WL *head, WL elem)
1294	{	1607	{
1295	elem->next = *head;	1608	elem->next = *head;
1296	*head = elem;	1609	*head = elem;
1297	}	1610	}
1298		1611
1299	inline void	1612	void inline_size
1300	wlist_del (WL *head, WL elem)	1613	wlist_del (WL *head, WL elem)
1301	{	1614	{
1302	while (*head)	1615	while (*head)
1303	{	1616	{
1304	if (*head == elem)	1617	if (*head == elem)
…		…
1309		1622
1310	head = &(*head)->next;	1623	head = &(*head)->next;
1311	}	1624	}
1312	}	1625	}
1313		1626
1314	inline void	1627	void inline_speed
1315	ev_clear_pending (EV_P_ W w)	1628	clear_pending (EV_P_ W w)
1316	{	1629	{
1317	if (w->pending)	1630	if (w->pending)
1318	{	1631	{
1319	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1632	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1320	w->pending = 0;	1633	w->pending = 0;
1321	}	1634	}
1322	}	1635	}
1323		1636
1324	inline void	1637	int
		1638	ev_clear_pending (EV_P_ void *w)
		1639	{
		1640	W w_ = (W)w;
		1641	int pending = w_->pending;
		1642
		1643	if (expect_true (pending))
		1644	{
		1645	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1646	w_->pending = 0;
		1647	p->w = 0;
		1648	return p->events;
		1649	}
		1650	else
		1651	return 0;
		1652	}
		1653
		1654	void inline_size
		1655	pri_adjust (EV_P_ W w)
		1656	{
		1657	int pri = w->priority;
		1658	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1659	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1660	w->priority = pri;
		1661	}
		1662
		1663	void inline_speed
1325	ev_start (EV_P_ W w, int active)	1664	ev_start (EV_P_ W w, int active)
1326	{	1665	{
1327	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1666	pri_adjust (EV_A_ w);
1328	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1329
1330	w->active = active;	1667	w->active = active;
1331	ev_ref (EV_A);	1668	ev_ref (EV_A);
1332	}	1669	}
1333		1670
1334	inline void	1671	void inline_size
1335	ev_stop (EV_P_ W w)	1672	ev_stop (EV_P_ W w)
1336	{	1673	{
1337	ev_unref (EV_A);	1674	ev_unref (EV_A);
1338	w->active = 0;	1675	w->active = 0;
1339	}	1676	}
1340		1677
1341	/*****************************************************************************/	1678	/*****************************************************************************/
1342		1679
1343	void	1680	void noinline
1344	ev_io_start (EV_P_ struct ev_io *w)	1681	ev_io_start (EV_P_ ev_io *w)
1345	{	1682	{
1346	int fd = w->fd;	1683	int fd = w->fd;
1347		1684
1348	if (expect_false (ev_is_active (w)))	1685	if (expect_false (ev_is_active (w)))
1349	return;	1686	return;
1350		1687
1351	assert (("ev_io_start called with negative fd", fd >= 0));	1688	assert (("ev_io_start called with negative fd", fd >= 0));
1352		1689
1353	ev_start (EV_A_ (W)w, 1);	1690	ev_start (EV_A_ (W)w, 1);
1354	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1691	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1355	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1692	wlist_add (&anfds[fd].head, (WL)w);
1356		1693
1357	fd_change (EV_A_ fd);	1694	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1695	w->events &= ~EV_IOFDSET;
1358	}	1696	}
1359		1697
1360	void	1698	void noinline
1361	ev_io_stop (EV_P_ struct ev_io *w)	1699	ev_io_stop (EV_P_ ev_io *w)
1362	{	1700	{
1363	ev_clear_pending (EV_A_ (W)w);	1701	clear_pending (EV_A_ (W)w);
1364	if (expect_false (!ev_is_active (w)))	1702	if (expect_false (!ev_is_active (w)))
1365	return;	1703	return;
1366		1704
1367	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1705	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1368		1706
1369	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1707	wlist_del (&anfds[w->fd].head, (WL)w);
1370	ev_stop (EV_A_ (W)w);	1708	ev_stop (EV_A_ (W)w);
1371		1709
1372	fd_change (EV_A_ w->fd);	1710	fd_change (EV_A_ w->fd, 1);
1373	}	1711	}
1374		1712
1375	void	1713	void noinline
1376	ev_timer_start (EV_P_ struct ev_timer *w)	1714	ev_timer_start (EV_P_ ev_timer *w)
1377	{	1715	{
1378	if (expect_false (ev_is_active (w)))	1716	if (expect_false (ev_is_active (w)))
1379	return;	1717	return;
1380		1718
1381	((WT)w)->at += mn_now;	1719	((WT)w)->at += mn_now;
1382		1720
1383	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1721	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1384		1722
1385	ev_start (EV_A_ (W)w, ++timercnt);	1723	ev_start (EV_A_ (W)w, ++timercnt);
1386	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);	1724	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1387	timers [timercnt - 1] = w;	1725	timers [timercnt - 1] = (WT)w;
1388	upheap ((WT *)timers, timercnt - 1);	1726	upheap (timers, timercnt - 1);
1389		1727
1390	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1728	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1391	}	1729	}
1392		1730
1393	void	1731	void noinline
1394	ev_timer_stop (EV_P_ struct ev_timer *w)	1732	ev_timer_stop (EV_P_ ev_timer *w)
1395	{	1733	{
1396	ev_clear_pending (EV_A_ (W)w);	1734	clear_pending (EV_A_ (W)w);
1397	if (expect_false (!ev_is_active (w)))	1735	if (expect_false (!ev_is_active (w)))
1398	return;	1736	return;
1399		1737
1400	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1738	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1401		1739
		1740	{
		1741	int active = ((W)w)->active;
		1742
1402	if (expect_true (((W)w)->active < timercnt--))	1743	if (expect_true (--active < --timercnt))
1403	{	1744	{
1404	timers [((W)w)->active - 1] = timers [timercnt];	1745	timers [active] = timers [timercnt];
1405	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1746	adjustheap (timers, timercnt, active);
1406	}	1747	}
		1748	}
1407		1749
1408	((WT)w)->at -= mn_now;	1750	((WT)w)->at -= mn_now;
1409		1751
1410	ev_stop (EV_A_ (W)w);	1752	ev_stop (EV_A_ (W)w);
1411	}	1753	}
1412		1754
1413	void	1755	void noinline
1414	ev_timer_again (EV_P_ struct ev_timer *w)	1756	ev_timer_again (EV_P_ ev_timer *w)
1415	{	1757	{
1416	if (ev_is_active (w))	1758	if (ev_is_active (w))
1417	{	1759	{
1418	if (w->repeat)	1760	if (w->repeat)
1419	{	1761	{
1420	((WT)w)->at = mn_now + w->repeat;	1762	((WT)w)->at = mn_now + w->repeat;
1421	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1763	adjustheap (timers, timercnt, ((W)w)->active - 1);
1422	}	1764	}
1423	else	1765	else
1424	ev_timer_stop (EV_A_ w);	1766	ev_timer_stop (EV_A_ w);
1425	}	1767	}
1426	else if (w->repeat)	1768	else if (w->repeat)
…		…
1428	w->at = w->repeat;	1770	w->at = w->repeat;
1429	ev_timer_start (EV_A_ w);	1771	ev_timer_start (EV_A_ w);
1430	}	1772	}
1431	}	1773	}
1432		1774
1433	#if EV_PERIODICS	1775	#if EV_PERIODIC_ENABLE
1434	void	1776	void noinline
1435	ev_periodic_start (EV_P_ struct ev_periodic *w)	1777	ev_periodic_start (EV_P_ ev_periodic *w)
1436	{	1778	{
1437	if (expect_false (ev_is_active (w)))	1779	if (expect_false (ev_is_active (w)))
1438	return;	1780	return;
1439		1781
1440	if (w->reschedule_cb)	1782	if (w->reschedule_cb)
1441	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1783	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1442	else if (w->interval)	1784	else if (w->interval)
1443	{	1785	{
1444	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1786	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1445	/* this formula differs from the one in periodic_reify because we do not always round up */	1787	/* this formula differs from the one in periodic_reify because we do not always round up */
1446	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1788	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1447	}	1789	}
		1790	else
		1791	((WT)w)->at = w->offset;
1448		1792
1449	ev_start (EV_A_ (W)w, ++periodiccnt);	1793	ev_start (EV_A_ (W)w, ++periodiccnt);
1450	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1794	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1451	periodics [periodiccnt - 1] = w;	1795	periodics [periodiccnt - 1] = (WT)w;
1452	upheap ((WT *)periodics, periodiccnt - 1);	1796	upheap (periodics, periodiccnt - 1);
1453		1797
1454	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1798	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1455	}	1799	}
1456		1800
1457	void	1801	void noinline
1458	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1802	ev_periodic_stop (EV_P_ ev_periodic *w)
1459	{	1803	{
1460	ev_clear_pending (EV_A_ (W)w);	1804	clear_pending (EV_A_ (W)w);
1461	if (expect_false (!ev_is_active (w)))	1805	if (expect_false (!ev_is_active (w)))
1462	return;	1806	return;
1463		1807
1464	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1808	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1465		1809
		1810	{
		1811	int active = ((W)w)->active;
		1812
1466	if (expect_true (((W)w)->active < periodiccnt--))	1813	if (expect_true (--active < --periodiccnt))
1467	{	1814	{
1468	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1815	periodics [active] = periodics [periodiccnt];
1469	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1816	adjustheap (periodics, periodiccnt, active);
1470	}	1817	}
		1818	}
1471		1819
1472	ev_stop (EV_A_ (W)w);	1820	ev_stop (EV_A_ (W)w);
1473	}	1821	}
1474		1822
1475	void	1823	void noinline
1476	ev_periodic_again (EV_P_ struct ev_periodic *w)	1824	ev_periodic_again (EV_P_ ev_periodic *w)
1477	{	1825	{
1478	/* TODO: use adjustheap and recalculation */	1826	/* TODO: use adjustheap and recalculation */
1479	ev_periodic_stop (EV_A_ w);	1827	ev_periodic_stop (EV_A_ w);
1480	ev_periodic_start (EV_A_ w);	1828	ev_periodic_start (EV_A_ w);
1481	}	1829	}
1482	#endif	1830	#endif
1483		1831
1484	void
1485	ev_idle_start (EV_P_ struct ev_idle *w)
1486	{
1487	if (expect_false (ev_is_active (w)))
1488	return;
1489
1490	ev_start (EV_A_ (W)w, ++idlecnt);
1491	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1492	idles [idlecnt - 1] = w;
1493	}
1494
1495	void
1496	ev_idle_stop (EV_P_ struct ev_idle *w)
1497	{
1498	ev_clear_pending (EV_A_ (W)w);
1499	if (expect_false (!ev_is_active (w)))
1500	return;
1501
1502	idles [((W)w)->active - 1] = idles [--idlecnt];
1503	ev_stop (EV_A_ (W)w);
1504	}
1505
1506	void
1507	ev_prepare_start (EV_P_ struct ev_prepare *w)
1508	{
1509	if (expect_false (ev_is_active (w)))
1510	return;
1511
1512	ev_start (EV_A_ (W)w, ++preparecnt);
1513	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1514	prepares [preparecnt - 1] = w;
1515	}
1516
1517	void
1518	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1519	{
1520	ev_clear_pending (EV_A_ (W)w);
1521	if (expect_false (!ev_is_active (w)))
1522	return;
1523
1524	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1525	ev_stop (EV_A_ (W)w);
1526	}
1527
1528	void
1529	ev_check_start (EV_P_ struct ev_check *w)
1530	{
1531	if (expect_false (ev_is_active (w)))
1532	return;
1533
1534	ev_start (EV_A_ (W)w, ++checkcnt);
1535	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1536	checks [checkcnt - 1] = w;
1537	}
1538
1539	void
1540	ev_check_stop (EV_P_ struct ev_check *w)
1541	{
1542	ev_clear_pending (EV_A_ (W)w);
1543	if (expect_false (!ev_is_active (w)))
1544	return;
1545
1546	checks [((W)w)->active - 1] = checks [--checkcnt];
1547	ev_stop (EV_A_ (W)w);
1548	}
1549
1550	#ifndef SA_RESTART	1832	#ifndef SA_RESTART
1551	# define SA_RESTART 0	1833	# define SA_RESTART 0
1552	#endif	1834	#endif
1553		1835
1554	void	1836	void noinline
1555	ev_signal_start (EV_P_ struct ev_signal *w)	1837	ev_signal_start (EV_P_ ev_signal *w)
1556	{	1838	{
1557	#if EV_MULTIPLICITY	1839	#if EV_MULTIPLICITY
1558	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1840	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1559	#endif	1841	#endif
1560	if (expect_false (ev_is_active (w)))	1842	if (expect_false (ev_is_active (w)))
1561	return;	1843	return;
1562		1844
1563	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1845	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1564		1846
		1847	{
		1848	#ifndef _WIN32
		1849	sigset_t full, prev;
		1850	sigfillset (&full);
		1851	sigprocmask (SIG_SETMASK, &full, &prev);
		1852	#endif
		1853
		1854	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1855
		1856	#ifndef _WIN32
		1857	sigprocmask (SIG_SETMASK, &prev, 0);
		1858	#endif
		1859	}
		1860
1565	ev_start (EV_A_ (W)w, 1);	1861	ev_start (EV_A_ (W)w, 1);
1566	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1567	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1862	wlist_add (&signals [w->signum - 1].head, (WL)w);
1568		1863
1569	if (!((WL)w)->next)	1864	if (!((WL)w)->next)
1570	{	1865	{
1571	#if _WIN32	1866	#if _WIN32
1572	signal (w->signum, sighandler);	1867	signal (w->signum, sighandler);
…		…
1578	sigaction (w->signum, &sa, 0);	1873	sigaction (w->signum, &sa, 0);
1579	#endif	1874	#endif
1580	}	1875	}
1581	}	1876	}
1582		1877
1583	void	1878	void noinline
1584	ev_signal_stop (EV_P_ struct ev_signal *w)	1879	ev_signal_stop (EV_P_ ev_signal *w)
1585	{	1880	{
1586	ev_clear_pending (EV_A_ (W)w);	1881	clear_pending (EV_A_ (W)w);
1587	if (expect_false (!ev_is_active (w)))	1882	if (expect_false (!ev_is_active (w)))
1588	return;	1883	return;
1589		1884
1590	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1885	wlist_del (&signals [w->signum - 1].head, (WL)w);
1591	ev_stop (EV_A_ (W)w);	1886	ev_stop (EV_A_ (W)w);
1592		1887
1593	if (!signals [w->signum - 1].head)	1888	if (!signals [w->signum - 1].head)
1594	signal (w->signum, SIG_DFL);	1889	signal (w->signum, SIG_DFL);
1595	}	1890	}
1596		1891
1597	void	1892	void
1598	ev_child_start (EV_P_ struct ev_child *w)	1893	ev_child_start (EV_P_ ev_child *w)
1599	{	1894	{
1600	#if EV_MULTIPLICITY	1895	#if EV_MULTIPLICITY
1601	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1896	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1602	#endif	1897	#endif
1603	if (expect_false (ev_is_active (w)))	1898	if (expect_false (ev_is_active (w)))
1604	return;	1899	return;
1605		1900
1606	ev_start (EV_A_ (W)w, 1);	1901	ev_start (EV_A_ (W)w, 1);
1607	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1902	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1608	}	1903	}
1609		1904
1610	void	1905	void
1611	ev_child_stop (EV_P_ struct ev_child *w)	1906	ev_child_stop (EV_P_ ev_child *w)
1612	{	1907	{
1613	ev_clear_pending (EV_A_ (W)w);	1908	clear_pending (EV_A_ (W)w);
1614	if (expect_false (!ev_is_active (w)))	1909	if (expect_false (!ev_is_active (w)))
1615	return;	1910	return;
1616		1911
1617	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1912	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1618	ev_stop (EV_A_ (W)w);	1913	ev_stop (EV_A_ (W)w);
1619	}	1914	}
1620		1915
		1916	#if EV_STAT_ENABLE
		1917
		1918	# ifdef _WIN32
		1919	# undef lstat
		1920	# define lstat(a,b) _stati64 (a,b)
		1921	# endif
		1922
		1923	#define DEF_STAT_INTERVAL 5.0074891
		1924	#define MIN_STAT_INTERVAL 0.1074891
		1925
		1926	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1927
		1928	#if EV_USE_INOTIFY
		1929	# define EV_INOTIFY_BUFSIZE 8192
		1930
		1931	static void noinline
		1932	infy_add (EV_P_ ev_stat *w)
		1933	{
		1934	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);
		1935
		1936	if (w->wd < 0)
		1937	{
		1938	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1939
		1940	/* monitor some parent directory for speedup hints */
		1941	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1942	{
		1943	char path [4096];
		1944	strcpy (path, w->path);
		1945
		1946	do
		1947	{
		1948	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1949	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1950
		1951	char *pend = strrchr (path, '/');
		1952
		1953	if (!pend)
		1954	break; /* whoops, no '/', complain to your admin */
		1955
		1956	*pend = 0;
		1957	w->wd = inotify_add_watch (fs_fd, path, mask);
		1958	}
		1959	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1960	}
		1961	}
		1962	else
		1963	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1964
		1965	if (w->wd >= 0)
		1966	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1967	}
		1968
		1969	static void noinline
		1970	infy_del (EV_P_ ev_stat *w)
		1971	{
		1972	int slot;
		1973	int wd = w->wd;
		1974
		1975	if (wd < 0)
		1976	return;
		1977
		1978	w->wd = -2;
		1979	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1980	wlist_del (&fs_hash [slot].head, (WL)w);
		1981
		1982	/* remove this watcher, if others are watching it, they will rearm */
		1983	inotify_rm_watch (fs_fd, wd);
		1984	}
		1985
		1986	static void noinline
		1987	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1988	{
		1989	if (slot < 0)
		1990	/* overflow, need to check for all hahs slots */
		1991	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1992	infy_wd (EV_A_ slot, wd, ev);
		1993	else
		1994	{
		1995	WL w_;
		1996
		1997	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1998	{
		1999	ev_stat *w = (ev_stat *)w_;
		2000	w_ = w_->next; /* lets us remove this watcher and all before it */
		2001
		2002	if (w->wd == wd || wd == -1)
		2003	{
		2004	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		2005	{
		2006	w->wd = -1;
		2007	infy_add (EV_A_ w); /* re-add, no matter what */
		2008	}
		2009
		2010	stat_timer_cb (EV_A_ &w->timer, 0);
		2011	}
		2012	}
		2013	}
		2014	}
		2015
		2016	static void
		2017	infy_cb (EV_P_ ev_io *w, int revents)
		2018	{
		2019	char buf [EV_INOTIFY_BUFSIZE];
		2020	struct inotify_event *ev = (struct inotify_event *)buf;
		2021	int ofs;
		2022	int len = read (fs_fd, buf, sizeof (buf));
		2023
		2024	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2025	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2026	}
		2027
		2028	void inline_size
		2029	infy_init (EV_P)
		2030	{
		2031	if (fs_fd != -2)
		2032	return;
		2033
		2034	fs_fd = inotify_init ();
		2035
		2036	if (fs_fd >= 0)
		2037	{
		2038	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2039	ev_set_priority (&fs_w, EV_MAXPRI);
		2040	ev_io_start (EV_A_ &fs_w);
		2041	}
		2042	}
		2043
		2044	void inline_size
		2045	infy_fork (EV_P)
		2046	{
		2047	int slot;
		2048
		2049	if (fs_fd < 0)
		2050	return;
		2051
		2052	close (fs_fd);
		2053	fs_fd = inotify_init ();
		2054
		2055	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2056	{
		2057	WL w_ = fs_hash [slot].head;
		2058	fs_hash [slot].head = 0;
		2059
		2060	while (w_)
		2061	{
		2062	ev_stat *w = (ev_stat *)w_;
		2063	w_ = w_->next; /* lets us add this watcher */
		2064
		2065	w->wd = -1;
		2066
		2067	if (fs_fd >= 0)
		2068	infy_add (EV_A_ w); /* re-add, no matter what */
		2069	else
		2070	ev_timer_start (EV_A_ &w->timer);
		2071	}
		2072
		2073	}
		2074	}
		2075
		2076	#endif
		2077
		2078	void
		2079	ev_stat_stat (EV_P_ ev_stat *w)
		2080	{
		2081	if (lstat (w->path, &w->attr) < 0)
		2082	w->attr.st_nlink = 0;
		2083	else if (!w->attr.st_nlink)
		2084	w->attr.st_nlink = 1;
		2085	}
		2086
		2087	static void noinline
		2088	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2089	{
		2090	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2091
		2092	/* we copy this here each the time so that */
		2093	/* prev has the old value when the callback gets invoked */
		2094	w->prev = w->attr;
		2095	ev_stat_stat (EV_A_ w);
		2096
		2097	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2098	if (
		2099	w->prev.st_dev != w->attr.st_dev
		2100	|| w->prev.st_ino != w->attr.st_ino
		2101	|| w->prev.st_mode != w->attr.st_mode
		2102	|| w->prev.st_nlink != w->attr.st_nlink
		2103	|| w->prev.st_uid != w->attr.st_uid
		2104	|| w->prev.st_gid != w->attr.st_gid
		2105	|| w->prev.st_rdev != w->attr.st_rdev
		2106	|| w->prev.st_size != w->attr.st_size
		2107	|| w->prev.st_atime != w->attr.st_atime
		2108	|| w->prev.st_mtime != w->attr.st_mtime
		2109	|| w->prev.st_ctime != w->attr.st_ctime
		2110	) {
		2111	#if EV_USE_INOTIFY
		2112	infy_del (EV_A_ w);
		2113	infy_add (EV_A_ w);
		2114	ev_stat_stat (EV_A_ w); /* avoid race... */
		2115	#endif
		2116
		2117	ev_feed_event (EV_A_ w, EV_STAT);
		2118	}
		2119	}
		2120
		2121	void
		2122	ev_stat_start (EV_P_ ev_stat *w)
		2123	{
		2124	if (expect_false (ev_is_active (w)))
		2125	return;
		2126
		2127	/* since we use memcmp, we need to clear any padding data etc. */
		2128	memset (&w->prev, 0, sizeof (ev_statdata));
		2129	memset (&w->attr, 0, sizeof (ev_statdata));
		2130
		2131	ev_stat_stat (EV_A_ w);
		2132
		2133	if (w->interval < MIN_STAT_INTERVAL)
		2134	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2135
		2136	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2137	ev_set_priority (&w->timer, ev_priority (w));
		2138
		2139	#if EV_USE_INOTIFY
		2140	infy_init (EV_A);
		2141
		2142	if (fs_fd >= 0)
		2143	infy_add (EV_A_ w);
		2144	else
		2145	#endif
		2146	ev_timer_start (EV_A_ &w->timer);
		2147
		2148	ev_start (EV_A_ (W)w, 1);
		2149	}
		2150
		2151	void
		2152	ev_stat_stop (EV_P_ ev_stat *w)
		2153	{
		2154	clear_pending (EV_A_ (W)w);
		2155	if (expect_false (!ev_is_active (w)))
		2156	return;
		2157
		2158	#if EV_USE_INOTIFY
		2159	infy_del (EV_A_ w);
		2160	#endif
		2161	ev_timer_stop (EV_A_ &w->timer);
		2162
		2163	ev_stop (EV_A_ (W)w);
		2164	}
		2165	#endif
		2166
		2167	#if EV_IDLE_ENABLE
		2168	void
		2169	ev_idle_start (EV_P_ ev_idle *w)
		2170	{
		2171	if (expect_false (ev_is_active (w)))
		2172	return;
		2173
		2174	pri_adjust (EV_A_ (W)w);
		2175
		2176	{
		2177	int active = ++idlecnt [ABSPRI (w)];
		2178
		2179	++idleall;
		2180	ev_start (EV_A_ (W)w, active);
		2181
		2182	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2183	idles [ABSPRI (w)][active - 1] = w;
		2184	}
		2185	}
		2186
		2187	void
		2188	ev_idle_stop (EV_P_ ev_idle *w)
		2189	{
		2190	clear_pending (EV_A_ (W)w);
		2191	if (expect_false (!ev_is_active (w)))
		2192	return;
		2193
		2194	{
		2195	int active = ((W)w)->active;
		2196
		2197	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2198	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2199
		2200	ev_stop (EV_A_ (W)w);
		2201	--idleall;
		2202	}
		2203	}
		2204	#endif
		2205
		2206	void
		2207	ev_prepare_start (EV_P_ ev_prepare *w)
		2208	{
		2209	if (expect_false (ev_is_active (w)))
		2210	return;
		2211
		2212	ev_start (EV_A_ (W)w, ++preparecnt);
		2213	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2214	prepares [preparecnt - 1] = w;
		2215	}
		2216
		2217	void
		2218	ev_prepare_stop (EV_P_ ev_prepare *w)
		2219	{
		2220	clear_pending (EV_A_ (W)w);
		2221	if (expect_false (!ev_is_active (w)))
		2222	return;
		2223
		2224	{
		2225	int active = ((W)w)->active;
		2226	prepares [active - 1] = prepares [--preparecnt];
		2227	((W)prepares [active - 1])->active = active;
		2228	}
		2229
		2230	ev_stop (EV_A_ (W)w);
		2231	}
		2232
		2233	void
		2234	ev_check_start (EV_P_ ev_check *w)
		2235	{
		2236	if (expect_false (ev_is_active (w)))
		2237	return;
		2238
		2239	ev_start (EV_A_ (W)w, ++checkcnt);
		2240	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2241	checks [checkcnt - 1] = w;
		2242	}
		2243
		2244	void
		2245	ev_check_stop (EV_P_ ev_check *w)
		2246	{
		2247	clear_pending (EV_A_ (W)w);
		2248	if (expect_false (!ev_is_active (w)))
		2249	return;
		2250
		2251	{
		2252	int active = ((W)w)->active;
		2253	checks [active - 1] = checks [--checkcnt];
		2254	((W)checks [active - 1])->active = active;
		2255	}
		2256
		2257	ev_stop (EV_A_ (W)w);
		2258	}
		2259
		2260	#if EV_EMBED_ENABLE
		2261	void noinline
		2262	ev_embed_sweep (EV_P_ ev_embed *w)
		2263	{
		2264	ev_loop (w->other, EVLOOP_NONBLOCK);
		2265	}
		2266
		2267	static void
		2268	embed_io_cb (EV_P_ ev_io *io, int revents)
		2269	{
		2270	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2271
		2272	if (ev_cb (w))
		2273	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2274	else
		2275	ev_loop (w->other, EVLOOP_NONBLOCK);
		2276	}
		2277
		2278	static void
		2279	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2280	{
		2281	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2282
		2283	{
		2284	struct ev_loop *loop = w->other;
		2285
		2286	while (fdchangecnt)
		2287	{
		2288	fd_reify (EV_A);
		2289	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2290	}
		2291	}
		2292	}
		2293
		2294	#if 0
		2295	static void
		2296	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2297	{
		2298	ev_idle_stop (EV_A_ idle);
		2299	}
		2300	#endif
		2301
		2302	void
		2303	ev_embed_start (EV_P_ ev_embed *w)
		2304	{
		2305	if (expect_false (ev_is_active (w)))
		2306	return;
		2307
		2308	{
		2309	struct ev_loop *loop = w->other;
		2310	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2311	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
		2312	}
		2313
		2314	ev_set_priority (&w->io, ev_priority (w));
		2315	ev_io_start (EV_A_ &w->io);
		2316
		2317	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2318	ev_set_priority (&w->prepare, EV_MINPRI);
		2319	ev_prepare_start (EV_A_ &w->prepare);
		2320
		2321	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2322
		2323	ev_start (EV_A_ (W)w, 1);
		2324	}
		2325
		2326	void
		2327	ev_embed_stop (EV_P_ ev_embed *w)
		2328	{
		2329	clear_pending (EV_A_ (W)w);
		2330	if (expect_false (!ev_is_active (w)))
		2331	return;
		2332
		2333	ev_io_stop (EV_A_ &w->io);
		2334	ev_prepare_stop (EV_A_ &w->prepare);
		2335
		2336	ev_stop (EV_A_ (W)w);
		2337	}
		2338	#endif
		2339
		2340	#if EV_FORK_ENABLE
		2341	void
		2342	ev_fork_start (EV_P_ ev_fork *w)
		2343	{
		2344	if (expect_false (ev_is_active (w)))
		2345	return;
		2346
		2347	ev_start (EV_A_ (W)w, ++forkcnt);
		2348	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2349	forks [forkcnt - 1] = w;
		2350	}
		2351
		2352	void
		2353	ev_fork_stop (EV_P_ ev_fork *w)
		2354	{
		2355	clear_pending (EV_A_ (W)w);
		2356	if (expect_false (!ev_is_active (w)))
		2357	return;
		2358
		2359	{
		2360	int active = ((W)w)->active;
		2361	forks [active - 1] = forks [--forkcnt];
		2362	((W)forks [active - 1])->active = active;
		2363	}
		2364
		2365	ev_stop (EV_A_ (W)w);
		2366	}
		2367	#endif
		2368
1621	/*****************************************************************************/	2369	/*****************************************************************************/
1622		2370
1623	struct ev_once	2371	struct ev_once
1624	{	2372	{
1625	struct ev_io io;	2373	ev_io io;
1626	struct ev_timer to;	2374	ev_timer to;
1627	void (*cb)(int revents, void *arg);	2375	void (*cb)(int revents, void *arg);
1628	void *arg;	2376	void *arg;
1629	};	2377	};
1630		2378
1631	static void	2379	static void
…		…
1640		2388
1641	cb (revents, arg);	2389	cb (revents, arg);
1642	}	2390	}
1643		2391
1644	static void	2392	static void
1645	once_cb_io (EV_P_ struct ev_io *w, int revents)	2393	once_cb_io (EV_P_ ev_io *w, int revents)
1646	{	2394	{
1647	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2395	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1648	}	2396	}
1649		2397
1650	static void	2398	static void
1651	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2399	once_cb_to (EV_P_ ev_timer *w, int revents)
1652	{	2400	{
1653	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2401	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1654	}	2402	}
1655		2403
1656	void	2404	void
…		…
1680	ev_timer_set (&once->to, timeout, 0.);	2428	ev_timer_set (&once->to, timeout, 0.);
1681	ev_timer_start (EV_A_ &once->to);	2429	ev_timer_start (EV_A_ &once->to);
1682	}	2430	}
1683	}	2431	}
1684		2432
		2433	#if EV_MULTIPLICITY
		2434	#include "ev_wrap.h"
		2435	#endif
		2436
1685	#ifdef __cplusplus	2437	#ifdef __cplusplus
1686	}	2438	}
1687	#endif	2439	#endif
1688		2440

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