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Comparing libev/ev.c (file contents):
Revision 1.117 by ayin, Thu Nov 15 17:15:56 2007 UTC vs.
Revision 1.185 by root, Fri Dec 14 18:22:30 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
43	# ifndef EV_USE_REALTIME	47	# ifndef EV_USE_REALTIME
44	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
45	# endif	49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
46	# endif	57	# endif
47		58
48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)	59	# ifndef EV_USE_SELECT
		60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
49	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
50	# endif	65	# endif
51		66
52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)	67	# ifndef EV_USE_POLL
		68	# if HAVE_POLL && HAVE_POLL_H
53	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
54	# endif	73	# endif
55		74
56	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)	75	# ifndef EV_USE_EPOLL
		76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
57	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
58	# endif	81	# endif
59		82
		83	# ifndef EV_USE_KQUEUE
60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
61	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
		97	# endif
		98
		99	# ifndef EV_USE_INOTIFY
		100	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		101	# define EV_USE_INOTIFY 1
		102	# else
		103	# define EV_USE_INOTIFY 0
		104	# endif
62	# endif	105	# endif
63		106
64	#endif	107	#endif
65		108
66	#include <math.h>	109	#include <math.h>
…		…
75	#include <sys/types.h>	118	#include <sys/types.h>
76	#include <time.h>	119	#include <time.h>
77		120
78	#include <signal.h>	121	#include <signal.h>
79		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
80	#ifndef _WIN32	129	#ifndef _WIN32
81	# include <unistd.h>
82	# include <sys/time.h>	130	# include <sys/time.h>
83	# include <sys/wait.h>	131	# include <sys/wait.h>
		132	# include <unistd.h>
84	#else	133	#else
85	# define WIN32_LEAN_AND_MEAN	134	# define WIN32_LEAN_AND_MEAN
86	# include <windows.h>	135	# include <windows.h>
87	# ifndef EV_SELECT_IS_WINSOCKET	136	# ifndef EV_SELECT_IS_WINSOCKET
88	# define EV_SELECT_IS_WINSOCKET 1	137	# define EV_SELECT_IS_WINSOCKET 1
…		…
90	#endif	139	#endif
91		140
92	/**/	141	/**/
93		142
94	#ifndef EV_USE_MONOTONIC	143	#ifndef EV_USE_MONOTONIC
95	# define EV_USE_MONOTONIC 1	144	# define EV_USE_MONOTONIC 0
		145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
96	#endif	149	#endif
97		150
98	#ifndef EV_USE_SELECT	151	#ifndef EV_USE_SELECT
99	# define EV_USE_SELECT 1	152	# define EV_USE_SELECT 1
100	# define EV_SELECT_USE_FD_SET 1
101	#endif	153	#endif
102		154
103	#ifndef EV_USE_POLL	155	#ifndef EV_USE_POLL
104	# ifdef _WIN32	156	# ifdef _WIN32
105	# define EV_USE_POLL 0	157	# define EV_USE_POLL 0
…		…
114		166
115	#ifndef EV_USE_KQUEUE	167	#ifndef EV_USE_KQUEUE
116	# define EV_USE_KQUEUE 0	168	# define EV_USE_KQUEUE 0
117	#endif	169	#endif
118		170
119	#ifndef EV_USE_REALTIME	171	#ifndef EV_USE_PORT
120	# define EV_USE_REALTIME 1	172	# define EV_USE_PORT 0
		173	#endif
		174
		175	#ifndef EV_USE_INOTIFY
		176	# define EV_USE_INOTIFY 0
		177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
		182	# else
		183	# define EV_PID_HASHSIZE 16
		184	# endif
		185	#endif
		186
		187	#ifndef EV_INOTIFY_HASHSIZE
		188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
121	#endif	193	#endif
122		194
123	/**/	195	/**/
124
125	/* darwin simply cannot be helped */
126	#ifdef __APPLE__
127	# undef EV_USE_POLL
128	# undef EV_USE_KQUEUE
129	#endif
130		196
131	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
132	# undef EV_USE_MONOTONIC	198	# undef EV_USE_MONOTONIC
133	# define EV_USE_MONOTONIC 0	199	# define EV_USE_MONOTONIC 0
134	#endif	200	#endif
…		…
136	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
137	# undef EV_USE_REALTIME	203	# undef EV_USE_REALTIME
138	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
139	#endif	205	#endif
140		206
		207	#if !EV_STAT_ENABLE
		208	# undef EV_USE_INOTIFY
		209	# define EV_USE_INOTIFY 0
		210	#endif
		211
		212	#if EV_USE_INOTIFY
		213	# include <sys/inotify.h>
		214	#endif
		215
141	#if EV_SELECT_IS_WINSOCKET	216	#if EV_SELECT_IS_WINSOCKET
142	# include <winsock.h>	217	# include <winsock.h>
143	#endif	218	#endif
144		219
145	/**/	220	/**/
146		221
		222	/*
		223	* This is used to avoid floating point rounding problems.
		224	* It is added to ev_rt_now when scheduling periodics
		225	* to ensure progress, time-wise, even when rounding
		226	* errors are against us.
		227	* This value is good at least till the year 4000.
		228	* Better solutions welcome.
		229	*/
		230	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
		231
147	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	232	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
148	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	233	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
149	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
150	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	234	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
151		235
152	#ifdef EV_H
153	# include EV_H
154	#else
155	# include "ev.h"
156	#endif
157
158	#if __GNUC__ >= 3	236	#if __GNUC__ >= 4
159	# define expect(expr,value) __builtin_expect ((expr),(value))	237	# define expect(expr,value) __builtin_expect ((expr),(value))
160	# define inline inline	238	# define noinline __attribute__ ((noinline))
161	#else	239	#else
162	# define expect(expr,value) (expr)	240	# define expect(expr,value) (expr)
163	# define inline static	241	# define noinline
		242	# if __STDC_VERSION__ < 199901L
		243	# define inline
		244	# endif
164	#endif	245	#endif
165		246
166	#define expect_false(expr) expect ((expr) != 0, 0)	247	#define expect_false(expr) expect ((expr) != 0, 0)
167	#define expect_true(expr) expect ((expr) != 0, 1)	248	#define expect_true(expr) expect ((expr) != 0, 1)
		249	#define inline_size static inline
		250
		251	#if EV_MINIMAL
		252	# define inline_speed static noinline
		253	#else
		254	# define inline_speed static inline
		255	#endif
168		256
169	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	257	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
170	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	258	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
171		259
172	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	260	#define EMPTY /* required for microsofts broken pseudo-c compiler */
173	#define EMPTY2(a,b) /* used to suppress some warnings */	261	#define EMPTY2(a,b) /* used to suppress some warnings */
174		262
175	typedef struct ev_watcher *W;	263	typedef ev_watcher *W;
176	typedef struct ev_watcher_list *WL;	264	typedef ev_watcher_list *WL;
177	typedef struct ev_watcher_time *WT;	265	typedef ev_watcher_time *WT;
178		266
179	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	267	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
180		268
181	#ifdef _WIN32	269	#ifdef _WIN32
182	# include "ev_win32.c"	270	# include "ev_win32.c"
…		…
184		272
185	/*****************************************************************************/	273	/*****************************************************************************/
186		274
187	static void (*syserr_cb)(const char *msg);	275	static void (*syserr_cb)(const char *msg);
188		276
		277	void
189	void ev_set_syserr_cb (void (*cb)(const char *msg))	278	ev_set_syserr_cb (void (*cb)(const char *msg))
190	{	279	{
191	syserr_cb = cb;	280	syserr_cb = cb;
192	}	281	}
193		282
194	static void	283	static void noinline
195	syserr (const char *msg)	284	syserr (const char *msg)
196	{	285	{
197	if (!msg)	286	if (!msg)
198	msg = "(libev) system error";	287	msg = "(libev) system error";
199		288
…		…
206	}	295	}
207	}	296	}
208		297
209	static void *(*alloc)(void *ptr, long size);	298	static void *(*alloc)(void *ptr, long size);
210		299
		300	void
211	void ev_set_allocator (void *(*cb)(void *ptr, long size))	301	ev_set_allocator (void *(*cb)(void *ptr, long size))
212	{	302	{
213	alloc = cb;	303	alloc = cb;
214	}	304	}
215		305
216	static void *	306	inline_speed void *
217	ev_realloc (void *ptr, long size)	307	ev_realloc (void *ptr, long size)
218	{	308	{
219	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	309	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
220		310
221	if (!ptr && size)	311	if (!ptr && size)
…		…
245	typedef struct	335	typedef struct
246	{	336	{
247	W w;	337	W w;
248	int events;	338	int events;
249	} ANPENDING;	339	} ANPENDING;
		340
		341	#if EV_USE_INOTIFY
		342	typedef struct
		343	{
		344	WL head;
		345	} ANFS;
		346	#endif
250		347
251	#if EV_MULTIPLICITY	348	#if EV_MULTIPLICITY
252		349
253	struct ev_loop	350	struct ev_loop
254	{	351	{
…		…
288	gettimeofday (&tv, 0);	385	gettimeofday (&tv, 0);
289	return tv.tv_sec + tv.tv_usec * 1e-6;	386	return tv.tv_sec + tv.tv_usec * 1e-6;
290	#endif	387	#endif
291	}	388	}
292		389
293	inline ev_tstamp	390	ev_tstamp inline_size
294	get_clock (void)	391	get_clock (void)
295	{	392	{
296	#if EV_USE_MONOTONIC	393	#if EV_USE_MONOTONIC
297	if (expect_true (have_monotonic))	394	if (expect_true (have_monotonic))
298	{	395	{
…		…
311	{	408	{
312	return ev_rt_now;	409	return ev_rt_now;
313	}	410	}
314	#endif	411	#endif
315		412
316	#define array_roundsize(type,n) (((n) | 4) & ~3)	413	int inline_size
		414	array_nextsize (int elem, int cur, int cnt)
		415	{
		416	int ncur = cur + 1;
		417
		418	do
		419	ncur <<= 1;
		420	while (cnt > ncur);
		421
		422	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		423	if (elem * ncur > 4096)
		424	{
		425	ncur *= elem;
		426	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		427	ncur = ncur - sizeof (void *) * 4;
		428	ncur /= elem;
		429	}
		430
		431	return ncur;
		432	}
		433
		434	static noinline void *
		435	array_realloc (int elem, void *base, int *cur, int cnt)
		436	{
		437	*cur = array_nextsize (elem, *cur, cnt);
		438	return ev_realloc (base, elem * *cur);
		439	}
317		440
318	#define array_needsize(type,base,cur,cnt,init) \	441	#define array_needsize(type,base,cur,cnt,init) \
319	if (expect_false ((cnt) > cur)) \	442	if (expect_false ((cnt) > (cur))) \
320	{ \	443	{ \
321	int newcnt = cur; \	444	int ocur_ = (cur); \
322	do \	445	(base) = (type *)array_realloc \
323	{ \	446	(sizeof (type), (base), &(cur), (cnt)); \
324	newcnt = array_roundsize (type, newcnt << 1); \	447	init ((base) + (ocur_), (cur) - ocur_); \
325	} \
326	while ((cnt) > newcnt); \
327	\
328	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
329	init (base + cur, newcnt - cur); \
330	cur = newcnt; \
331	}	448	}
332		449
		450	#if 0
333	#define array_slim(type,stem) \	451	#define array_slim(type,stem) \
334	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	452	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
335	{ \	453	{ \
336	stem ## max = array_roundsize (stem ## cnt >> 1); \	454	stem ## max = array_roundsize (stem ## cnt >> 1); \
337	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	455	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
338	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	456	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
339	}	457	}
		458	#endif
340		459
341	#define array_free(stem, idx) \	460	#define array_free(stem, idx) \
342	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	461	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
343		462
344	/*****************************************************************************/	463	/*****************************************************************************/
345		464
346	static void	465	void noinline
		466	ev_feed_event (EV_P_ void *w, int revents)
		467	{
		468	W w_ = (W)w;
		469	int pri = ABSPRI (w_);
		470
		471	if (expect_false (w_->pending))
		472	pendings [pri][w_->pending - 1].events |= revents;
		473	else
		474	{
		475	w_->pending = ++pendingcnt [pri];
		476	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		477	pendings [pri][w_->pending - 1].w = w_;
		478	pendings [pri][w_->pending - 1].events = revents;
		479	}
		480	}
		481
		482	void inline_speed
		483	queue_events (EV_P_ W *events, int eventcnt, int type)
		484	{
		485	int i;
		486
		487	for (i = 0; i < eventcnt; ++i)
		488	ev_feed_event (EV_A_ events [i], type);
		489	}
		490
		491	/*****************************************************************************/
		492
		493	void inline_size
347	anfds_init (ANFD *base, int count)	494	anfds_init (ANFD *base, int count)
348	{	495	{
349	while (count--)	496	while (count--)
350	{	497	{
351	base->head = 0;	498	base->head = 0;
…		…
354		501
355	++base;	502	++base;
356	}	503	}
357	}	504	}
358		505
359	void	506	void inline_speed
360	ev_feed_event (EV_P_ void *w, int revents)
361	{
362	W w_ = (W)w;
363
364	if (w_->pending)
365	{
366	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
367	return;
368	}
369
370	w_->pending = ++pendingcnt [ABSPRI (w_)];
371	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
372	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
373	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
374	}
375
376	static void
377	queue_events (EV_P_ W *events, int eventcnt, int type)
378	{
379	int i;
380
381	for (i = 0; i < eventcnt; ++i)
382	ev_feed_event (EV_A_ events [i], type);
383	}
384
385	inline void
386	fd_event (EV_P_ int fd, int revents)	507	fd_event (EV_P_ int fd, int revents)
387	{	508	{
388	ANFD *anfd = anfds + fd;	509	ANFD *anfd = anfds + fd;
389	struct ev_io *w;	510	ev_io *w;
390		511
391	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	512	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
392	{	513	{
393	int ev = w->events & revents;	514	int ev = w->events & revents;
394		515
395	if (ev)	516	if (ev)
396	ev_feed_event (EV_A_ (W)w, ev);	517	ev_feed_event (EV_A_ (W)w, ev);
…		…
398	}	519	}
399		520
400	void	521	void
401	ev_feed_fd_event (EV_P_ int fd, int revents)	522	ev_feed_fd_event (EV_P_ int fd, int revents)
402	{	523	{
		524	if (fd >= 0 && fd < anfdmax)
403	fd_event (EV_A_ fd, revents);	525	fd_event (EV_A_ fd, revents);
404	}	526	}
405		527
406	/*****************************************************************************/	528	void inline_size
407
408	static void
409	fd_reify (EV_P)	529	fd_reify (EV_P)
410	{	530	{
411	int i;	531	int i;
412		532
413	for (i = 0; i < fdchangecnt; ++i)	533	for (i = 0; i < fdchangecnt; ++i)
414	{	534	{
415	int fd = fdchanges [i];	535	int fd = fdchanges [i];
416	ANFD *anfd = anfds + fd;	536	ANFD *anfd = anfds + fd;
417	struct ev_io *w;	537	ev_io *w;
418		538
419	int events = 0;	539	unsigned char events = 0;
420		540
421	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	541	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
422	events |= w->events;	542	events |= (unsigned char)w->events;
423		543
424	#if EV_SELECT_IS_WINSOCKET	544	#if EV_SELECT_IS_WINSOCKET
425	if (events)	545	if (events)
426	{	546	{
427	unsigned long argp;	547	unsigned long argp;
428	anfd->handle = _get_osfhandle (fd);	548	anfd->handle = _get_osfhandle (fd);
429	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	549	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
430	}	550	}
431	#endif	551	#endif
432		552
		553	{
		554	unsigned char o_events = anfd->events;
		555	unsigned char o_reify = anfd->reify;
		556
433	anfd->reify = 0;	557	anfd->reify = 0;
434
435	method_modify (EV_A_ fd, anfd->events, events);
436	anfd->events = events;	558	anfd->events = events;
		559
		560	if (o_events != events || o_reify & EV_IOFDSET)
		561	backend_modify (EV_A_ fd, o_events, events);
		562	}
437	}	563	}
438		564
439	fdchangecnt = 0;	565	fdchangecnt = 0;
440	}	566	}
441		567
442	static void	568	void inline_size
443	fd_change (EV_P_ int fd)	569	fd_change (EV_P_ int fd, int flags)
444	{	570	{
445	if (anfds [fd].reify)	571	unsigned char reify = anfds [fd].reify;
446	return;
447
448	anfds [fd].reify = 1;	572	anfds [fd].reify |= flags;
449		573
		574	if (expect_true (!reify))
		575	{
450	++fdchangecnt;	576	++fdchangecnt;
451	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	577	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
452	fdchanges [fdchangecnt - 1] = fd;	578	fdchanges [fdchangecnt - 1] = fd;
		579	}
453	}	580	}
454		581
455	static void	582	void inline_speed
456	fd_kill (EV_P_ int fd)	583	fd_kill (EV_P_ int fd)
457	{	584	{
458	struct ev_io *w;	585	ev_io *w;
459		586
460	while ((w = (struct ev_io *)anfds [fd].head))	587	while ((w = (ev_io *)anfds [fd].head))
461	{	588	{
462	ev_io_stop (EV_A_ w);	589	ev_io_stop (EV_A_ w);
463	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	590	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
464	}	591	}
465	}	592	}
466		593
467	static int	594	int inline_size
468	fd_valid (int fd)	595	fd_valid (int fd)
469	{	596	{
470	#ifdef _WIN32	597	#ifdef _WIN32
471	return _get_osfhandle (fd) != -1;	598	return _get_osfhandle (fd) != -1;
472	#else	599	#else
473	return fcntl (fd, F_GETFD) != -1;	600	return fcntl (fd, F_GETFD) != -1;
474	#endif	601	#endif
475	}	602	}
476		603
477	/* called on EBADF to verify fds */	604	/* called on EBADF to verify fds */
478	static void	605	static void noinline
479	fd_ebadf (EV_P)	606	fd_ebadf (EV_P)
480	{	607	{
481	int fd;	608	int fd;
482		609
483	for (fd = 0; fd < anfdmax; ++fd)	610	for (fd = 0; fd < anfdmax; ++fd)
…		…
485	if (!fd_valid (fd) == -1 && errno == EBADF)	612	if (!fd_valid (fd) == -1 && errno == EBADF)
486	fd_kill (EV_A_ fd);	613	fd_kill (EV_A_ fd);
487	}	614	}
488		615
489	/* called on ENOMEM in select/poll to kill some fds and retry */	616	/* called on ENOMEM in select/poll to kill some fds and retry */
490	static void	617	static void noinline
491	fd_enomem (EV_P)	618	fd_enomem (EV_P)
492	{	619	{
493	int fd;	620	int fd;
494		621
495	for (fd = anfdmax; fd--; )	622	for (fd = anfdmax; fd--; )
…		…
498	fd_kill (EV_A_ fd);	625	fd_kill (EV_A_ fd);
499	return;	626	return;
500	}	627	}
501	}	628	}
502		629
503	/* usually called after fork if method needs to re-arm all fds from scratch */	630	/* usually called after fork if backend needs to re-arm all fds from scratch */
504	static void	631	static void noinline
505	fd_rearm_all (EV_P)	632	fd_rearm_all (EV_P)
506	{	633	{
507	int fd;	634	int fd;
508		635
509	/* this should be highly optimised to not do anything but set a flag */
510	for (fd = 0; fd < anfdmax; ++fd)	636	for (fd = 0; fd < anfdmax; ++fd)
511	if (anfds [fd].events)	637	if (anfds [fd].events)
512	{	638	{
513	anfds [fd].events = 0;	639	anfds [fd].events = 0;
514	fd_change (EV_A_ fd);	640	fd_change (EV_A_ fd, EV_IOFDSET | 1);
515	}	641	}
516	}	642	}
517		643
518	/*****************************************************************************/	644	/*****************************************************************************/
519		645
520	static void	646	void inline_speed
521	upheap (WT *heap, int k)	647	upheap (WT *heap, int k)
522	{	648	{
523	WT w = heap [k];	649	WT w = heap [k];
524		650
525	while (k && heap [k >> 1]->at > w->at)	651	while (k)
526	{	652	{
		653	int p = (k - 1) >> 1;
		654
		655	if (heap [p]->at <= w->at)
		656	break;
		657
527	heap [k] = heap [k >> 1];	658	heap [k] = heap [p];
528	((W)heap [k])->active = k + 1;	659	((W)heap [k])->active = k + 1;
529	k >>= 1;	660	k = p;
530	}	661	}
531		662
532	heap [k] = w;	663	heap [k] = w;
533	((W)heap [k])->active = k + 1;	664	((W)heap [k])->active = k + 1;
534
535	}	665	}
536		666
537	static void	667	void inline_speed
538	downheap (WT *heap, int N, int k)	668	downheap (WT *heap, int N, int k)
539	{	669	{
540	WT w = heap [k];	670	WT w = heap [k];
541		671
542	while (k < (N >> 1))	672	for (;;)
543	{	673	{
544	int j = k << 1;	674	int c = (k << 1) + 1;
545		675
546	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	676	if (c >= N)
547	++j;
548
549	if (w->at <= heap [j]->at)
550	break;	677	break;
551		678
		679	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		680	? 1 : 0;
		681
		682	if (w->at <= heap [c]->at)
		683	break;
		684
552	heap [k] = heap [j];	685	heap [k] = heap [c];
553	((W)heap [k])->active = k + 1;	686	((W)heap [k])->active = k + 1;
		687
554	k = j;	688	k = c;
555	}	689	}
556		690
557	heap [k] = w;	691	heap [k] = w;
558	((W)heap [k])->active = k + 1;	692	((W)heap [k])->active = k + 1;
559	}	693	}
560		694
561	inline void	695	void inline_size
562	adjustheap (WT *heap, int N, int k)	696	adjustheap (WT *heap, int N, int k)
563	{	697	{
564	upheap (heap, k);	698	upheap (heap, k);
565	downheap (heap, N, k);	699	downheap (heap, N, k);
566	}	700	}
…		…
576	static ANSIG *signals;	710	static ANSIG *signals;
577	static int signalmax;	711	static int signalmax;
578		712
579	static int sigpipe [2];	713	static int sigpipe [2];
580	static sig_atomic_t volatile gotsig;	714	static sig_atomic_t volatile gotsig;
581	static struct ev_io sigev;	715	static ev_io sigev;
582		716
583	static void	717	void inline_size
584	signals_init (ANSIG *base, int count)	718	signals_init (ANSIG *base, int count)
585	{	719	{
586	while (count--)	720	while (count--)
587	{	721	{
588	base->head = 0;	722	base->head = 0;
…		…
608	write (sigpipe [1], &signum, 1);	742	write (sigpipe [1], &signum, 1);
609	errno = old_errno;	743	errno = old_errno;
610	}	744	}
611	}	745	}
612		746
613	void	747	void noinline
614	ev_feed_signal_event (EV_P_ int signum)	748	ev_feed_signal_event (EV_P_ int signum)
615	{	749	{
616	WL w;	750	WL w;
617		751
618	#if EV_MULTIPLICITY	752	#if EV_MULTIPLICITY
…		…
629	for (w = signals [signum].head; w; w = w->next)	763	for (w = signals [signum].head; w; w = w->next)
630	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	764	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
631	}	765	}
632		766
633	static void	767	static void
634	sigcb (EV_P_ struct ev_io *iow, int revents)	768	sigcb (EV_P_ ev_io *iow, int revents)
635	{	769	{
636	int signum;	770	int signum;
637		771
638	read (sigpipe [0], &revents, 1);	772	read (sigpipe [0], &revents, 1);
639	gotsig = 0;	773	gotsig = 0;
…		…
641	for (signum = signalmax; signum--; )	775	for (signum = signalmax; signum--; )
642	if (signals [signum].gotsig)	776	if (signals [signum].gotsig)
643	ev_feed_signal_event (EV_A_ signum + 1);	777	ev_feed_signal_event (EV_A_ signum + 1);
644	}	778	}
645		779
646	inline void	780	void inline_speed
647	fd_intern (int fd)	781	fd_intern (int fd)
648	{	782	{
649	#ifdef _WIN32	783	#ifdef _WIN32
650	int arg = 1;	784	int arg = 1;
651	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	785	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
653	fcntl (fd, F_SETFD, FD_CLOEXEC);	787	fcntl (fd, F_SETFD, FD_CLOEXEC);
654	fcntl (fd, F_SETFL, O_NONBLOCK);	788	fcntl (fd, F_SETFL, O_NONBLOCK);
655	#endif	789	#endif
656	}	790	}
657		791
658	static void	792	static void noinline
659	siginit (EV_P)	793	siginit (EV_P)
660	{	794	{
661	fd_intern (sigpipe [0]);	795	fd_intern (sigpipe [0]);
662	fd_intern (sigpipe [1]);	796	fd_intern (sigpipe [1]);
663		797
…		…
666	ev_unref (EV_A); /* child watcher should not keep loop alive */	800	ev_unref (EV_A); /* child watcher should not keep loop alive */
667	}	801	}
668		802
669	/*****************************************************************************/	803	/*****************************************************************************/
670		804
671	static struct ev_child *childs [PID_HASHSIZE];	805	static WL childs [EV_PID_HASHSIZE];
672		806
673	#ifndef _WIN32	807	#ifndef _WIN32
674		808
675	static struct ev_signal childev;	809	static ev_signal childev;
		810
		811	void inline_speed
		812	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		813	{
		814	ev_child *w;
		815
		816	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		817	if (w->pid == pid || !w->pid)
		818	{
		819	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		820	w->rpid = pid;
		821	w->rstatus = status;
		822	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		823	}
		824	}
676		825
677	#ifndef WCONTINUED	826	#ifndef WCONTINUED
678	# define WCONTINUED 0	827	# define WCONTINUED 0
679	#endif	828	#endif
680		829
681	static void	830	static void
682	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
683	{
684	struct ev_child *w;
685
686	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
687	if (w->pid == pid || !w->pid)
688	{
689	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
690	w->rpid = pid;
691	w->rstatus = status;
692	ev_feed_event (EV_A_ (W)w, EV_CHILD);
693	}
694	}
695
696	static void
697	childcb (EV_P_ struct ev_signal *sw, int revents)	831	childcb (EV_P_ ev_signal *sw, int revents)
698	{	832	{
699	int pid, status;	833	int pid, status;
700		834
		835	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
701	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	836	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
702	{	837	if (!WCONTINUED
		838	|| errno != EINVAL
		839	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		840	return;
		841
703	/* make sure we are called again until all childs have been reaped */	842	/* make sure we are called again until all childs have been reaped */
		843	/* we need to do it this way so that the callback gets called before we continue */
704	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	844	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
705		845
706	child_reap (EV_A_ sw, pid, pid, status);	846	child_reap (EV_A_ sw, pid, pid, status);
		847	if (EV_PID_HASHSIZE > 1)
707	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	848	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
708	}
709	}	849	}
710		850
711	#endif	851	#endif
712		852
713	/*****************************************************************************/	853	/*****************************************************************************/
714		854
		855	#if EV_USE_PORT
		856	# include "ev_port.c"
		857	#endif
715	#if EV_USE_KQUEUE	858	#if EV_USE_KQUEUE
716	# include "ev_kqueue.c"	859	# include "ev_kqueue.c"
717	#endif	860	#endif
718	#if EV_USE_EPOLL	861	#if EV_USE_EPOLL
719	# include "ev_epoll.c"	862	# include "ev_epoll.c"
…		…
736	{	879	{
737	return EV_VERSION_MINOR;	880	return EV_VERSION_MINOR;
738	}	881	}
739		882
740	/* return true if we are running with elevated privileges and should ignore env variables */	883	/* return true if we are running with elevated privileges and should ignore env variables */
741	static int	884	int inline_size
742	enable_secure (void)	885	enable_secure (void)
743	{	886	{
744	#ifdef _WIN32	887	#ifdef _WIN32
745	return 0;	888	return 0;
746	#else	889	#else
…		…
748	|| getgid () != getegid ();	891	|| getgid () != getegid ();
749	#endif	892	#endif
750	}	893	}
751		894
752	unsigned int	895	unsigned int
753	ev_method (EV_P)	896	ev_supported_backends (void)
754	{	897	{
755	return method;	898	unsigned int flags = 0;
756	}
757		899
758	static void	900	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		901	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		902	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		903	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		904	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		905
		906	return flags;
		907	}
		908
		909	unsigned int
		910	ev_recommended_backends (void)
		911	{
		912	unsigned int flags = ev_supported_backends ();
		913
		914	#ifndef __NetBSD__
		915	/* kqueue is borked on everything but netbsd apparently */
		916	/* it usually doesn't work correctly on anything but sockets and pipes */
		917	flags &= ~EVBACKEND_KQUEUE;
		918	#endif
		919	#ifdef __APPLE__
		920	// flags &= ~EVBACKEND_KQUEUE; for documentation
		921	flags &= ~EVBACKEND_POLL;
		922	#endif
		923
		924	return flags;
		925	}
		926
		927	unsigned int
		928	ev_embeddable_backends (void)
		929	{
		930	return EVBACKEND_EPOLL
		931	| EVBACKEND_KQUEUE
		932	| EVBACKEND_PORT;
		933	}
		934
		935	unsigned int
		936	ev_backend (EV_P)
		937	{
		938	return backend;
		939	}
		940
		941	unsigned int
		942	ev_loop_count (EV_P)
		943	{
		944	return loop_count;
		945	}
		946
		947	static void noinline
759	loop_init (EV_P_ unsigned int flags)	948	loop_init (EV_P_ unsigned int flags)
760	{	949	{
761	if (!method)	950	if (!backend)
762	{	951	{
763	#if EV_USE_MONOTONIC	952	#if EV_USE_MONOTONIC
764	{	953	{
765	struct timespec ts;	954	struct timespec ts;
766	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	955	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
771	ev_rt_now = ev_time ();	960	ev_rt_now = ev_time ();
772	mn_now = get_clock ();	961	mn_now = get_clock ();
773	now_floor = mn_now;	962	now_floor = mn_now;
774	rtmn_diff = ev_rt_now - mn_now;	963	rtmn_diff = ev_rt_now - mn_now;
775		964
776	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))	965	/* pid check not overridable via env */
		966	#ifndef _WIN32
		967	if (flags & EVFLAG_FORKCHECK)
		968	curpid = getpid ();
		969	#endif
		970
		971	if (!(flags & EVFLAG_NOENV)
		972	&& !enable_secure ()
		973	&& getenv ("LIBEV_FLAGS"))
777	flags = atoi (getenv ("LIBEV_FLAGS"));	974	flags = atoi (getenv ("LIBEV_FLAGS"));
778		975
779	if (!(flags & 0x0000ffff))	976	if (!(flags & 0x0000ffffUL))
780	flags |= 0x0000ffff;	977	flags |= ev_recommended_backends ();
781		978
782	method = 0;	979	backend = 0;
		980	backend_fd = -1;
		981	#if EV_USE_INOTIFY
		982	fs_fd = -2;
		983	#endif
		984
		985	#if EV_USE_PORT
		986	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		987	#endif
783	#if EV_USE_KQUEUE	988	#if EV_USE_KQUEUE
784	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);	989	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
785	#endif	990	#endif
786	#if EV_USE_EPOLL	991	#if EV_USE_EPOLL
787	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);	992	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
788	#endif	993	#endif
789	#if EV_USE_POLL	994	#if EV_USE_POLL
790	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);	995	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
791	#endif	996	#endif
792	#if EV_USE_SELECT	997	#if EV_USE_SELECT
793	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);	998	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
794	#endif	999	#endif
795		1000
796	ev_init (&sigev, sigcb);	1001	ev_init (&sigev, sigcb);
797	ev_set_priority (&sigev, EV_MAXPRI);	1002	ev_set_priority (&sigev, EV_MAXPRI);
798	}	1003	}
799	}	1004	}
800		1005
801	void	1006	static void noinline
802	loop_destroy (EV_P)	1007	loop_destroy (EV_P)
803	{	1008	{
804	int i;	1009	int i;
805		1010
		1011	#if EV_USE_INOTIFY
		1012	if (fs_fd >= 0)
		1013	close (fs_fd);
		1014	#endif
		1015
		1016	if (backend_fd >= 0)
		1017	close (backend_fd);
		1018
		1019	#if EV_USE_PORT
		1020	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		1021	#endif
806	#if EV_USE_KQUEUE	1022	#if EV_USE_KQUEUE
807	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1023	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
808	#endif	1024	#endif
809	#if EV_USE_EPOLL	1025	#if EV_USE_EPOLL
810	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1026	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
811	#endif	1027	#endif
812	#if EV_USE_POLL	1028	#if EV_USE_POLL
813	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1029	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
814	#endif	1030	#endif
815	#if EV_USE_SELECT	1031	#if EV_USE_SELECT
816	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1032	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
817	#endif	1033	#endif
818		1034
819	for (i = NUMPRI; i--; )	1035	for (i = NUMPRI; i--; )
		1036	{
820	array_free (pending, [i]);	1037	array_free (pending, [i]);
		1038	#if EV_IDLE_ENABLE
		1039	array_free (idle, [i]);
		1040	#endif
		1041	}
821		1042
822	/* have to use the microsoft-never-gets-it-right macro */	1043	/* have to use the microsoft-never-gets-it-right macro */
823	array_free (fdchange, EMPTY0);	1044	array_free (fdchange, EMPTY);
824	array_free (timer, EMPTY0);	1045	array_free (timer, EMPTY);
825	#if EV_PERIODICS	1046	#if EV_PERIODIC_ENABLE
826	array_free (periodic, EMPTY0);	1047	array_free (periodic, EMPTY);
827	#endif	1048	#endif
828	array_free (idle, EMPTY0);
829	array_free (prepare, EMPTY0);	1049	array_free (prepare, EMPTY);
830	array_free (check, EMPTY0);	1050	array_free (check, EMPTY);
831		1051
832	method = 0;	1052	backend = 0;
833	}	1053	}
834		1054
835	static void	1055	void inline_size infy_fork (EV_P);
		1056
		1057	void inline_size
836	loop_fork (EV_P)	1058	loop_fork (EV_P)
837	{	1059	{
		1060	#if EV_USE_PORT
		1061	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1062	#endif
		1063	#if EV_USE_KQUEUE
		1064	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1065	#endif
838	#if EV_USE_EPOLL	1066	#if EV_USE_EPOLL
839	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1067	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
840	#endif	1068	#endif
841	#if EV_USE_KQUEUE	1069	#if EV_USE_INOTIFY
842	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1070	infy_fork (EV_A);
843	#endif	1071	#endif
844		1072
845	if (ev_is_active (&sigev))	1073	if (ev_is_active (&sigev))
846	{	1074	{
847	/* default loop */	1075	/* default loop */
…		…
868		1096
869	memset (loop, 0, sizeof (struct ev_loop));	1097	memset (loop, 0, sizeof (struct ev_loop));
870		1098
871	loop_init (EV_A_ flags);	1099	loop_init (EV_A_ flags);
872		1100
873	if (ev_method (EV_A))	1101	if (ev_backend (EV_A))
874	return loop;	1102	return loop;
875		1103
876	return 0;	1104	return 0;
877	}	1105	}
878		1106
…		…
891		1119
892	#endif	1120	#endif
893		1121
894	#if EV_MULTIPLICITY	1122	#if EV_MULTIPLICITY
895	struct ev_loop *	1123	struct ev_loop *
896	ev_default_loop_ (unsigned int flags)	1124	ev_default_loop_init (unsigned int flags)
897	#else	1125	#else
898	int	1126	int
899	ev_default_loop (unsigned int flags)	1127	ev_default_loop (unsigned int flags)
900	#endif	1128	#endif
901	{	1129	{
…		…
911	ev_default_loop_ptr = 1;	1139	ev_default_loop_ptr = 1;
912	#endif	1140	#endif
913		1141
914	loop_init (EV_A_ flags);	1142	loop_init (EV_A_ flags);
915		1143
916	if (ev_method (EV_A))	1144	if (ev_backend (EV_A))
917	{	1145	{
918	siginit (EV_A);	1146	siginit (EV_A);
919		1147
920	#ifndef _WIN32	1148	#ifndef _WIN32
921	ev_signal_init (&childev, childcb, SIGCHLD);	1149	ev_signal_init (&childev, childcb, SIGCHLD);
…		…
957	{	1185	{
958	#if EV_MULTIPLICITY	1186	#if EV_MULTIPLICITY
959	struct ev_loop *loop = ev_default_loop_ptr;	1187	struct ev_loop *loop = ev_default_loop_ptr;
960	#endif	1188	#endif
961		1189
962	if (method)	1190	if (backend)
963	postfork = 1;	1191	postfork = 1;
964	}	1192	}
965		1193
966	/*****************************************************************************/	1194	/*****************************************************************************/
967		1195
968	static int	1196	void
969	any_pending (EV_P)	1197	ev_invoke (EV_P_ void *w, int revents)
970	{	1198	{
971	int pri;	1199	EV_CB_INVOKE ((W)w, revents);
972
973	for (pri = NUMPRI; pri--; )
974	if (pendingcnt [pri])
975	return 1;
976
977	return 0;
978	}	1200	}
979		1201
980	static void	1202	void inline_speed
981	call_pending (EV_P)	1203	call_pending (EV_P)
982	{	1204	{
983	int pri;	1205	int pri;
984		1206
985	for (pri = NUMPRI; pri--; )	1207	for (pri = NUMPRI; pri--; )
986	while (pendingcnt [pri])	1208	while (pendingcnt [pri])
987	{	1209	{
988	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1210	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
989		1211
990	if (p->w)	1212	if (expect_true (p->w))
991	{	1213	{
		1214	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1215
992	p->w->pending = 0;	1216	p->w->pending = 0;
993	EV_CB_INVOKE (p->w, p->events);	1217	EV_CB_INVOKE (p->w, p->events);
994	}	1218	}
995	}	1219	}
996	}	1220	}
997		1221
998	static void	1222	void inline_size
999	timers_reify (EV_P)	1223	timers_reify (EV_P)
1000	{	1224	{
1001	while (timercnt && ((WT)timers [0])->at <= mn_now)	1225	while (timercnt && ((WT)timers [0])->at <= mn_now)
1002	{	1226	{
1003	struct ev_timer *w = timers [0];	1227	ev_timer *w = (ev_timer *)timers [0];
1004		1228
1005	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1229	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1006		1230
1007	/* first reschedule or stop timer */	1231	/* first reschedule or stop timer */
1008	if (w->repeat)	1232	if (w->repeat)
1009	{	1233	{
1010	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1234	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1011		1235
1012	((WT)w)->at += w->repeat;	1236	((WT)w)->at += w->repeat;
1013	if (((WT)w)->at < mn_now)	1237	if (((WT)w)->at < mn_now)
1014	((WT)w)->at = mn_now;	1238	((WT)w)->at = mn_now;
1015		1239
1016	downheap ((WT *)timers, timercnt, 0);	1240	downheap (timers, timercnt, 0);
1017	}	1241	}
1018	else	1242	else
1019	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1243	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1020		1244
1021	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1245	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1022	}	1246	}
1023	}	1247	}
1024		1248
1025	#if EV_PERIODICS	1249	#if EV_PERIODIC_ENABLE
1026	static void	1250	void inline_size
1027	periodics_reify (EV_P)	1251	periodics_reify (EV_P)
1028	{	1252	{
1029	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1253	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1030	{	1254	{
1031	struct ev_periodic *w = periodics [0];	1255	ev_periodic *w = (ev_periodic *)periodics [0];
1032		1256
1033	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1257	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1034		1258
1035	/* first reschedule or stop timer */	1259	/* first reschedule or stop timer */
1036	if (w->reschedule_cb)	1260	if (w->reschedule_cb)
1037	{	1261	{
1038	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1262	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1039	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1263	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1040	downheap ((WT *)periodics, periodiccnt, 0);	1264	downheap (periodics, periodiccnt, 0);
1041	}	1265	}
1042	else if (w->interval)	1266	else if (w->interval)
1043	{	1267	{
1044	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1268	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1269	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1045	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1270	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1046	downheap ((WT *)periodics, periodiccnt, 0);	1271	downheap (periodics, periodiccnt, 0);
1047	}	1272	}
1048	else	1273	else
1049	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1274	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1050		1275
1051	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1276	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1052	}	1277	}
1053	}	1278	}
1054		1279
1055	static void	1280	static void noinline
1056	periodics_reschedule (EV_P)	1281	periodics_reschedule (EV_P)
1057	{	1282	{
1058	int i;	1283	int i;
1059		1284
1060	/* adjust periodics after time jump */	1285	/* adjust periodics after time jump */
1061	for (i = 0; i < periodiccnt; ++i)	1286	for (i = 0; i < periodiccnt; ++i)
1062	{	1287	{
1063	struct ev_periodic *w = periodics [i];	1288	ev_periodic *w = (ev_periodic *)periodics [i];
1064		1289
1065	if (w->reschedule_cb)	1290	if (w->reschedule_cb)
1066	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1291	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1067	else if (w->interval)	1292	else if (w->interval)
1068	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1293	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1069	}	1294	}
1070		1295
1071	/* now rebuild the heap */	1296	/* now rebuild the heap */
1072	for (i = periodiccnt >> 1; i--; )	1297	for (i = periodiccnt >> 1; i--; )
1073	downheap ((WT *)periodics, periodiccnt, i);	1298	downheap (periodics, periodiccnt, i);
1074	}	1299	}
1075	#endif	1300	#endif
1076		1301
1077	inline int	1302	#if EV_IDLE_ENABLE
1078	time_update_monotonic (EV_P)	1303	void inline_size
		1304	idle_reify (EV_P)
1079	{	1305	{
		1306	if (expect_false (idleall))
		1307	{
		1308	int pri;
		1309
		1310	for (pri = NUMPRI; pri--; )
		1311	{
		1312	if (pendingcnt [pri])
		1313	break;
		1314
		1315	if (idlecnt [pri])
		1316	{
		1317	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1318	break;
		1319	}
		1320	}
		1321	}
		1322	}
		1323	#endif
		1324
		1325	void inline_speed
		1326	time_update (EV_P_ ev_tstamp max_block)
		1327	{
		1328	int i;
		1329
		1330	#if EV_USE_MONOTONIC
		1331	if (expect_true (have_monotonic))
		1332	{
		1333	ev_tstamp odiff = rtmn_diff;
		1334
1080	mn_now = get_clock ();	1335	mn_now = get_clock ();
1081		1336
		1337	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1338	/* interpolate in the meantime */
1082	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1339	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1083	{	1340	{
1084	ev_rt_now = rtmn_diff + mn_now;	1341	ev_rt_now = rtmn_diff + mn_now;
1085	return 0;	1342	return;
1086	}	1343	}
1087	else	1344
1088	{
1089	now_floor = mn_now;	1345	now_floor = mn_now;
1090	ev_rt_now = ev_time ();	1346	ev_rt_now = ev_time ();
1091	return 1;
1092	}
1093	}
1094		1347
1095	static void	1348	/* loop a few times, before making important decisions.
1096	time_update (EV_P)	1349	* on the choice of "4": one iteration isn't enough,
1097	{	1350	* in case we get preempted during the calls to
1098	int i;	1351	* ev_time and get_clock. a second call is almost guaranteed
1099		1352	* to succeed in that case, though. and looping a few more times
1100	#if EV_USE_MONOTONIC	1353	* doesn't hurt either as we only do this on time-jumps or
1101	if (expect_true (have_monotonic))	1354	* in the unlikely event of having been preempted here.
1102	{	1355	*/
1103	if (time_update_monotonic (EV_A))	1356	for (i = 4; --i; )
1104	{	1357	{
1105	ev_tstamp odiff = rtmn_diff;
1106
1107	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1108	{
1109	rtmn_diff = ev_rt_now - mn_now;	1358	rtmn_diff = ev_rt_now - mn_now;
1110		1359
1111	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1360	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1112	return; /* all is well */	1361	return; /* all is well */
1113		1362
1114	ev_rt_now = ev_time ();	1363	ev_rt_now = ev_time ();
1115	mn_now = get_clock ();	1364	mn_now = get_clock ();
1116	now_floor = mn_now;	1365	now_floor = mn_now;
1117	}	1366	}
1118		1367
1119	# if EV_PERIODICS	1368	# if EV_PERIODIC_ENABLE
		1369	periodics_reschedule (EV_A);
		1370	# endif
		1371	/* no timer adjustment, as the monotonic clock doesn't jump */
		1372	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1373	}
		1374	else
		1375	#endif
		1376	{
		1377	ev_rt_now = ev_time ();
		1378
		1379	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1380	{
		1381	#if EV_PERIODIC_ENABLE
1120	periodics_reschedule (EV_A);	1382	periodics_reschedule (EV_A);
1121	# endif	1383	#endif
1122	/* no timer adjustment, as the monotonic clock doesn't jump */
1123	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1124	}
1125	}
1126	else
1127	#endif
1128	{
1129	ev_rt_now = ev_time ();
1130
1131	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1132	{
1133	#if EV_PERIODICS
1134	periodics_reschedule (EV_A);
1135	#endif
1136
1137	/* adjust timers. this is easy, as the offset is the same for all */	1384	/* adjust timers. this is easy, as the offset is the same for all of them */
1138	for (i = 0; i < timercnt; ++i)	1385	for (i = 0; i < timercnt; ++i)
1139	((WT)timers [i])->at += ev_rt_now - mn_now;	1386	((WT)timers [i])->at += ev_rt_now - mn_now;
1140	}	1387	}
1141		1388
1142	mn_now = ev_rt_now;	1389	mn_now = ev_rt_now;
…		…
1158	static int loop_done;	1405	static int loop_done;
1159		1406
1160	void	1407	void
1161	ev_loop (EV_P_ int flags)	1408	ev_loop (EV_P_ int flags)
1162	{	1409	{
1163	double block;
1164	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1410	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1411	? EVUNLOOP_ONE
		1412	: EVUNLOOP_CANCEL;
1165		1413
1166	while (activecnt)	1414	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1415
		1416	do
1167	{	1417	{
		1418	#ifndef _WIN32
		1419	if (expect_false (curpid)) /* penalise the forking check even more */
		1420	if (expect_false (getpid () != curpid))
		1421	{
		1422	curpid = getpid ();
		1423	postfork = 1;
		1424	}
		1425	#endif
		1426
		1427	#if EV_FORK_ENABLE
		1428	/* we might have forked, so queue fork handlers */
		1429	if (expect_false (postfork))
		1430	if (forkcnt)
		1431	{
		1432	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1433	call_pending (EV_A);
		1434	}
		1435	#endif
		1436
1168	/* queue check watchers (and execute them) */	1437	/* queue prepare watchers (and execute them) */
1169	if (expect_false (preparecnt))	1438	if (expect_false (preparecnt))
1170	{	1439	{
1171	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1440	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1172	call_pending (EV_A);	1441	call_pending (EV_A);
1173	}	1442	}
1174		1443
		1444	if (expect_false (!activecnt))
		1445	break;
		1446
1175	/* we might have forked, so reify kernel state if necessary */	1447	/* we might have forked, so reify kernel state if necessary */
1176	if (expect_false (postfork))	1448	if (expect_false (postfork))
1177	loop_fork (EV_A);	1449	loop_fork (EV_A);
1178		1450
1179	/* update fd-related kernel structures */	1451	/* update fd-related kernel structures */
1180	fd_reify (EV_A);	1452	fd_reify (EV_A);
1181		1453
1182	/* calculate blocking time */	1454	/* calculate blocking time */
		1455	{
		1456	ev_tstamp block;
1183		1457
1184	/* we only need this for !monotonic clock or timers, but as we basically	1458	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1185	always have timers, we just calculate it always */	1459	block = 0.; /* do not block at all */
1186	#if EV_USE_MONOTONIC
1187	if (expect_true (have_monotonic))
1188	time_update_monotonic (EV_A);
1189	else	1460	else
1190	#endif
1191	{	1461	{
1192	ev_rt_now = ev_time ();	1462	/* update time to cancel out callback processing overhead */
1193	mn_now = ev_rt_now;	1463	time_update (EV_A_ 1e100);
1194	}
1195		1464
1196	if (flags & EVLOOP_NONBLOCK || idlecnt)
1197	block = 0.;
1198	else
1199	{
1200	block = MAX_BLOCKTIME;	1465	block = MAX_BLOCKTIME;
1201		1466
1202	if (timercnt)	1467	if (timercnt)
1203	{	1468	{
1204	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1469	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1205	if (block > to) block = to;	1470	if (block > to) block = to;
1206	}	1471	}
1207		1472
1208	#if EV_PERIODICS	1473	#if EV_PERIODIC_ENABLE
1209	if (periodiccnt)	1474	if (periodiccnt)
1210	{	1475	{
1211	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1476	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1212	if (block > to) block = to;	1477	if (block > to) block = to;
1213	}	1478	}
1214	#endif	1479	#endif
1215		1480
1216	if (block < 0.) block = 0.;	1481	if (expect_false (block < 0.)) block = 0.;
1217	}	1482	}
1218		1483
		1484	++loop_count;
1219	method_poll (EV_A_ block);	1485	backend_poll (EV_A_ block);
1220		1486
1221	/* update ev_rt_now, do magic */	1487	/* update ev_rt_now, do magic */
1222	time_update (EV_A);	1488	time_update (EV_A_ block);
		1489	}
1223		1490
1224	/* queue pending timers and reschedule them */	1491	/* queue pending timers and reschedule them */
1225	timers_reify (EV_A); /* relative timers called last */	1492	timers_reify (EV_A); /* relative timers called last */
1226	#if EV_PERIODICS	1493	#if EV_PERIODIC_ENABLE
1227	periodics_reify (EV_A); /* absolute timers called first */	1494	periodics_reify (EV_A); /* absolute timers called first */
1228	#endif	1495	#endif
1229		1496
		1497	#if EV_IDLE_ENABLE
1230	/* queue idle watchers unless io or timers are pending */	1498	/* queue idle watchers unless other events are pending */
1231	if (idlecnt && !any_pending (EV_A))	1499	idle_reify (EV_A);
1232	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1500	#endif
1233		1501
1234	/* queue check watchers, to be executed first */	1502	/* queue check watchers, to be executed first */
1235	if (checkcnt)	1503	if (expect_false (checkcnt))
1236	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1504	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1237		1505
1238	call_pending (EV_A);	1506	call_pending (EV_A);
1239		1507
1240	if (loop_done)
1241	break;
1242	}	1508	}
		1509	while (expect_true (activecnt && !loop_done));
1243		1510
1244	if (loop_done != 2)	1511	if (loop_done == EVUNLOOP_ONE)
1245	loop_done = 0;	1512	loop_done = EVUNLOOP_CANCEL;
1246	}	1513	}
1247		1514
1248	void	1515	void
1249	ev_unloop (EV_P_ int how)	1516	ev_unloop (EV_P_ int how)
1250	{	1517	{
1251	loop_done = how;	1518	loop_done = how;
1252	}	1519	}
1253		1520
1254	/*****************************************************************************/	1521	/*****************************************************************************/
1255		1522
1256	inline void	1523	void inline_size
1257	wlist_add (WL *head, WL elem)	1524	wlist_add (WL *head, WL elem)
1258	{	1525	{
1259	elem->next = *head;	1526	elem->next = *head;
1260	*head = elem;	1527	*head = elem;
1261	}	1528	}
1262		1529
1263	inline void	1530	void inline_size
1264	wlist_del (WL *head, WL elem)	1531	wlist_del (WL *head, WL elem)
1265	{	1532	{
1266	while (*head)	1533	while (*head)
1267	{	1534	{
1268	if (*head == elem)	1535	if (*head == elem)
…		…
1273		1540
1274	head = &(*head)->next;	1541	head = &(*head)->next;
1275	}	1542	}
1276	}	1543	}
1277		1544
1278	inline void	1545	void inline_speed
1279	ev_clear_pending (EV_P_ W w)	1546	clear_pending (EV_P_ W w)
1280	{	1547	{
1281	if (w->pending)	1548	if (w->pending)
1282	{	1549	{
1283	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1550	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1284	w->pending = 0;	1551	w->pending = 0;
1285	}	1552	}
1286	}	1553	}
1287		1554
1288	inline void	1555	int
		1556	ev_clear_pending (EV_P_ void *w)
		1557	{
		1558	W w_ = (W)w;
		1559	int pending = w_->pending;
		1560
		1561	if (expect_true (pending))
		1562	{
		1563	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1564	w_->pending = 0;
		1565	p->w = 0;
		1566	return p->events;
		1567	}
		1568	else
		1569	return 0;
		1570	}
		1571
		1572	void inline_size
		1573	pri_adjust (EV_P_ W w)
		1574	{
		1575	int pri = w->priority;
		1576	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1577	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1578	w->priority = pri;
		1579	}
		1580
		1581	void inline_speed
1289	ev_start (EV_P_ W w, int active)	1582	ev_start (EV_P_ W w, int active)
1290	{	1583	{
1291	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1584	pri_adjust (EV_A_ w);
1292	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1293
1294	w->active = active;	1585	w->active = active;
1295	ev_ref (EV_A);	1586	ev_ref (EV_A);
1296	}	1587	}
1297		1588
1298	inline void	1589	void inline_size
1299	ev_stop (EV_P_ W w)	1590	ev_stop (EV_P_ W w)
1300	{	1591	{
1301	ev_unref (EV_A);	1592	ev_unref (EV_A);
1302	w->active = 0;	1593	w->active = 0;
1303	}	1594	}
1304		1595
1305	/*****************************************************************************/	1596	/*****************************************************************************/
1306		1597
1307	void	1598	void noinline
1308	ev_io_start (EV_P_ struct ev_io *w)	1599	ev_io_start (EV_P_ ev_io *w)
1309	{	1600	{
1310	int fd = w->fd;	1601	int fd = w->fd;
1311		1602
1312	if (ev_is_active (w))	1603	if (expect_false (ev_is_active (w)))
1313	return;	1604	return;
1314		1605
1315	assert (("ev_io_start called with negative fd", fd >= 0));	1606	assert (("ev_io_start called with negative fd", fd >= 0));
1316		1607
1317	ev_start (EV_A_ (W)w, 1);	1608	ev_start (EV_A_ (W)w, 1);
1318	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1609	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1319	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1610	wlist_add (&anfds[fd].head, (WL)w);
1320		1611
1321	fd_change (EV_A_ fd);	1612	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1613	w->events &= ~EV_IOFDSET;
1322	}	1614	}
1323		1615
1324	void	1616	void noinline
1325	ev_io_stop (EV_P_ struct ev_io *w)	1617	ev_io_stop (EV_P_ ev_io *w)
1326	{	1618	{
1327	ev_clear_pending (EV_A_ (W)w);	1619	clear_pending (EV_A_ (W)w);
1328	if (!ev_is_active (w))	1620	if (expect_false (!ev_is_active (w)))
1329	return;	1621	return;
1330		1622
1331	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1623	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1332		1624
1333	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1625	wlist_del (&anfds[w->fd].head, (WL)w);
1334	ev_stop (EV_A_ (W)w);	1626	ev_stop (EV_A_ (W)w);
1335		1627
1336	fd_change (EV_A_ w->fd);	1628	fd_change (EV_A_ w->fd, 1);
1337	}	1629	}
1338		1630
1339	void	1631	void noinline
1340	ev_timer_start (EV_P_ struct ev_timer *w)	1632	ev_timer_start (EV_P_ ev_timer *w)
1341	{	1633	{
1342	if (ev_is_active (w))	1634	if (expect_false (ev_is_active (w)))
1343	return;	1635	return;
1344		1636
1345	((WT)w)->at += mn_now;	1637	((WT)w)->at += mn_now;
1346		1638
1347	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1639	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1348		1640
1349	ev_start (EV_A_ (W)w, ++timercnt);	1641	ev_start (EV_A_ (W)w, ++timercnt);
1350	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);	1642	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1351	timers [timercnt - 1] = w;	1643	timers [timercnt - 1] = (WT)w;
1352	upheap ((WT *)timers, timercnt - 1);	1644	upheap (timers, timercnt - 1);
1353		1645
1354	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1646	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1355	}	1647	}
1356		1648
1357	void	1649	void noinline
1358	ev_timer_stop (EV_P_ struct ev_timer *w)	1650	ev_timer_stop (EV_P_ ev_timer *w)
1359	{	1651	{
1360	ev_clear_pending (EV_A_ (W)w);	1652	clear_pending (EV_A_ (W)w);
1361	if (!ev_is_active (w))	1653	if (expect_false (!ev_is_active (w)))
1362	return;	1654	return;
1363		1655
1364	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1656	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1365		1657
1366	if (((W)w)->active < timercnt--)	1658	{
		1659	int active = ((W)w)->active;
		1660
		1661	if (expect_true (--active < --timercnt))
1367	{	1662	{
1368	timers [((W)w)->active - 1] = timers [timercnt];	1663	timers [active] = timers [timercnt];
1369	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1664	adjustheap (timers, timercnt, active);
1370	}	1665	}
		1666	}
1371		1667
1372	((WT)w)->at -= mn_now;	1668	((WT)w)->at -= mn_now;
1373		1669
1374	ev_stop (EV_A_ (W)w);	1670	ev_stop (EV_A_ (W)w);
1375	}	1671	}
1376		1672
1377	void	1673	void noinline
1378	ev_timer_again (EV_P_ struct ev_timer *w)	1674	ev_timer_again (EV_P_ ev_timer *w)
1379	{	1675	{
1380	if (ev_is_active (w))	1676	if (ev_is_active (w))
1381	{	1677	{
1382	if (w->repeat)	1678	if (w->repeat)
1383	{	1679	{
1384	((WT)w)->at = mn_now + w->repeat;	1680	((WT)w)->at = mn_now + w->repeat;
1385	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1681	adjustheap (timers, timercnt, ((W)w)->active - 1);
1386	}	1682	}
1387	else	1683	else
1388	ev_timer_stop (EV_A_ w);	1684	ev_timer_stop (EV_A_ w);
1389	}	1685	}
1390	else if (w->repeat)	1686	else if (w->repeat)
…		…
1392	w->at = w->repeat;	1688	w->at = w->repeat;
1393	ev_timer_start (EV_A_ w);	1689	ev_timer_start (EV_A_ w);
1394	}	1690	}
1395	}	1691	}
1396		1692
1397	#if EV_PERIODICS	1693	#if EV_PERIODIC_ENABLE
1398	void	1694	void noinline
1399	ev_periodic_start (EV_P_ struct ev_periodic *w)	1695	ev_periodic_start (EV_P_ ev_periodic *w)
1400	{	1696	{
1401	if (ev_is_active (w))	1697	if (expect_false (ev_is_active (w)))
1402	return;	1698	return;
1403		1699
1404	if (w->reschedule_cb)	1700	if (w->reschedule_cb)
1405	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1701	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1406	else if (w->interval)	1702	else if (w->interval)
1407	{	1703	{
1408	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1704	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1409	/* this formula differs from the one in periodic_reify because we do not always round up */	1705	/* this formula differs from the one in periodic_reify because we do not always round up */
1410	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1706	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1411	}	1707	}
		1708	else
		1709	((WT)w)->at = w->offset;
1412		1710
1413	ev_start (EV_A_ (W)w, ++periodiccnt);	1711	ev_start (EV_A_ (W)w, ++periodiccnt);
1414	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1712	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1415	periodics [periodiccnt - 1] = w;	1713	periodics [periodiccnt - 1] = (WT)w;
1416	upheap ((WT *)periodics, periodiccnt - 1);	1714	upheap (periodics, periodiccnt - 1);
1417		1715
1418	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1716	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1419	}	1717	}
1420		1718
1421	void	1719	void noinline
1422	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1720	ev_periodic_stop (EV_P_ ev_periodic *w)
1423	{	1721	{
1424	ev_clear_pending (EV_A_ (W)w);	1722	clear_pending (EV_A_ (W)w);
1425	if (!ev_is_active (w))	1723	if (expect_false (!ev_is_active (w)))
1426	return;	1724	return;
1427		1725
1428	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1726	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1429		1727
1430	if (((W)w)->active < periodiccnt--)	1728	{
		1729	int active = ((W)w)->active;
		1730
		1731	if (expect_true (--active < --periodiccnt))
1431	{	1732	{
1432	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1733	periodics [active] = periodics [periodiccnt];
1433	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1734	adjustheap (periodics, periodiccnt, active);
1434	}	1735	}
		1736	}
1435		1737
1436	ev_stop (EV_A_ (W)w);	1738	ev_stop (EV_A_ (W)w);
1437	}	1739	}
1438		1740
1439	void	1741	void noinline
1440	ev_periodic_again (EV_P_ struct ev_periodic *w)	1742	ev_periodic_again (EV_P_ ev_periodic *w)
1441	{	1743	{
1442	/* TODO: use adjustheap and recalculation */	1744	/* TODO: use adjustheap and recalculation */
1443	ev_periodic_stop (EV_A_ w);	1745	ev_periodic_stop (EV_A_ w);
1444	ev_periodic_start (EV_A_ w);	1746	ev_periodic_start (EV_A_ w);
1445	}	1747	}
1446	#endif	1748	#endif
1447		1749
1448	void
1449	ev_idle_start (EV_P_ struct ev_idle *w)
1450	{
1451	if (ev_is_active (w))
1452	return;
1453
1454	ev_start (EV_A_ (W)w, ++idlecnt);
1455	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1456	idles [idlecnt - 1] = w;
1457	}
1458
1459	void
1460	ev_idle_stop (EV_P_ struct ev_idle *w)
1461	{
1462	ev_clear_pending (EV_A_ (W)w);
1463	if (!ev_is_active (w))
1464	return;
1465
1466	idles [((W)w)->active - 1] = idles [--idlecnt];
1467	ev_stop (EV_A_ (W)w);
1468	}
1469
1470	void
1471	ev_prepare_start (EV_P_ struct ev_prepare *w)
1472	{
1473	if (ev_is_active (w))
1474	return;
1475
1476	ev_start (EV_A_ (W)w, ++preparecnt);
1477	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1478	prepares [preparecnt - 1] = w;
1479	}
1480
1481	void
1482	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1483	{
1484	ev_clear_pending (EV_A_ (W)w);
1485	if (!ev_is_active (w))
1486	return;
1487
1488	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1489	ev_stop (EV_A_ (W)w);
1490	}
1491
1492	void
1493	ev_check_start (EV_P_ struct ev_check *w)
1494	{
1495	if (ev_is_active (w))
1496	return;
1497
1498	ev_start (EV_A_ (W)w, ++checkcnt);
1499	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1500	checks [checkcnt - 1] = w;
1501	}
1502
1503	void
1504	ev_check_stop (EV_P_ struct ev_check *w)
1505	{
1506	ev_clear_pending (EV_A_ (W)w);
1507	if (!ev_is_active (w))
1508	return;
1509
1510	checks [((W)w)->active - 1] = checks [--checkcnt];
1511	ev_stop (EV_A_ (W)w);
1512	}
1513
1514	#ifndef SA_RESTART	1750	#ifndef SA_RESTART
1515	# define SA_RESTART 0	1751	# define SA_RESTART 0
1516	#endif	1752	#endif
1517		1753
1518	void	1754	void noinline
1519	ev_signal_start (EV_P_ struct ev_signal *w)	1755	ev_signal_start (EV_P_ ev_signal *w)
1520	{	1756	{
1521	#if EV_MULTIPLICITY	1757	#if EV_MULTIPLICITY
1522	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1758	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1523	#endif	1759	#endif
1524	if (ev_is_active (w))	1760	if (expect_false (ev_is_active (w)))
1525	return;	1761	return;
1526		1762
1527	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1763	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1528		1764
		1765	{
		1766	#ifndef _WIN32
		1767	sigset_t full, prev;
		1768	sigfillset (&full);
		1769	sigprocmask (SIG_SETMASK, &full, &prev);
		1770	#endif
		1771
		1772	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1773
		1774	#ifndef _WIN32
		1775	sigprocmask (SIG_SETMASK, &prev, 0);
		1776	#endif
		1777	}
		1778
1529	ev_start (EV_A_ (W)w, 1);	1779	ev_start (EV_A_ (W)w, 1);
1530	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1531	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1780	wlist_add (&signals [w->signum - 1].head, (WL)w);
1532		1781
1533	if (!((WL)w)->next)	1782	if (!((WL)w)->next)
1534	{	1783	{
1535	#if _WIN32	1784	#if _WIN32
1536	signal (w->signum, sighandler);	1785	signal (w->signum, sighandler);
…		…
1542	sigaction (w->signum, &sa, 0);	1791	sigaction (w->signum, &sa, 0);
1543	#endif	1792	#endif
1544	}	1793	}
1545	}	1794	}
1546		1795
1547	void	1796	void noinline
1548	ev_signal_stop (EV_P_ struct ev_signal *w)	1797	ev_signal_stop (EV_P_ ev_signal *w)
1549	{	1798	{
1550	ev_clear_pending (EV_A_ (W)w);	1799	clear_pending (EV_A_ (W)w);
1551	if (!ev_is_active (w))	1800	if (expect_false (!ev_is_active (w)))
1552	return;	1801	return;
1553		1802
1554	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1803	wlist_del (&signals [w->signum - 1].head, (WL)w);
1555	ev_stop (EV_A_ (W)w);	1804	ev_stop (EV_A_ (W)w);
1556		1805
1557	if (!signals [w->signum - 1].head)	1806	if (!signals [w->signum - 1].head)
1558	signal (w->signum, SIG_DFL);	1807	signal (w->signum, SIG_DFL);
1559	}	1808	}
1560		1809
1561	void	1810	void
1562	ev_child_start (EV_P_ struct ev_child *w)	1811	ev_child_start (EV_P_ ev_child *w)
1563	{	1812	{
1564	#if EV_MULTIPLICITY	1813	#if EV_MULTIPLICITY
1565	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1814	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1566	#endif	1815	#endif
1567	if (ev_is_active (w))	1816	if (expect_false (ev_is_active (w)))
1568	return;	1817	return;
1569		1818
1570	ev_start (EV_A_ (W)w, 1);	1819	ev_start (EV_A_ (W)w, 1);
1571	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1820	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1572	}	1821	}
1573		1822
1574	void	1823	void
1575	ev_child_stop (EV_P_ struct ev_child *w)	1824	ev_child_stop (EV_P_ ev_child *w)
1576	{	1825	{
1577	ev_clear_pending (EV_A_ (W)w);	1826	clear_pending (EV_A_ (W)w);
1578	if (!ev_is_active (w))	1827	if (expect_false (!ev_is_active (w)))
1579	return;	1828	return;
1580		1829
1581	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1830	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1582	ev_stop (EV_A_ (W)w);	1831	ev_stop (EV_A_ (W)w);
1583	}	1832	}
1584		1833
		1834	#if EV_STAT_ENABLE
		1835
		1836	# ifdef _WIN32
		1837	# undef lstat
		1838	# define lstat(a,b) _stati64 (a,b)
		1839	# endif
		1840
		1841	#define DEF_STAT_INTERVAL 5.0074891
		1842	#define MIN_STAT_INTERVAL 0.1074891
		1843
		1844	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1845
		1846	#if EV_USE_INOTIFY
		1847	# define EV_INOTIFY_BUFSIZE 8192
		1848
		1849	static void noinline
		1850	infy_add (EV_P_ ev_stat *w)
		1851	{
		1852	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
		1853
		1854	if (w->wd < 0)
		1855	{
		1856	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1857
		1858	/* monitor some parent directory for speedup hints */
		1859	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1860	{
		1861	char path [4096];
		1862	strcpy (path, w->path);
		1863
		1864	do
		1865	{
		1866	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1867	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1868
		1869	char *pend = strrchr (path, '/');
		1870
		1871	if (!pend)
		1872	break; /* whoops, no '/', complain to your admin */
		1873
		1874	*pend = 0;
		1875	w->wd = inotify_add_watch (fs_fd, path, mask);
		1876	}
		1877	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1878	}
		1879	}
		1880	else
		1881	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1882
		1883	if (w->wd >= 0)
		1884	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1885	}
		1886
		1887	static void noinline
		1888	infy_del (EV_P_ ev_stat *w)
		1889	{
		1890	int slot;
		1891	int wd = w->wd;
		1892
		1893	if (wd < 0)
		1894	return;
		1895
		1896	w->wd = -2;
		1897	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1898	wlist_del (&fs_hash [slot].head, (WL)w);
		1899
		1900	/* remove this watcher, if others are watching it, they will rearm */
		1901	inotify_rm_watch (fs_fd, wd);
		1902	}
		1903
		1904	static void noinline
		1905	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1906	{
		1907	if (slot < 0)
		1908	/* overflow, need to check for all hahs slots */
		1909	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1910	infy_wd (EV_A_ slot, wd, ev);
		1911	else
		1912	{
		1913	WL w_;
		1914
		1915	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1916	{
		1917	ev_stat *w = (ev_stat *)w_;
		1918	w_ = w_->next; /* lets us remove this watcher and all before it */
		1919
		1920	if (w->wd == wd || wd == -1)
		1921	{
		1922	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1923	{
		1924	w->wd = -1;
		1925	infy_add (EV_A_ w); /* re-add, no matter what */
		1926	}
		1927
		1928	stat_timer_cb (EV_A_ &w->timer, 0);
		1929	}
		1930	}
		1931	}
		1932	}
		1933
		1934	static void
		1935	infy_cb (EV_P_ ev_io *w, int revents)
		1936	{
		1937	char buf [EV_INOTIFY_BUFSIZE];
		1938	struct inotify_event *ev = (struct inotify_event *)buf;
		1939	int ofs;
		1940	int len = read (fs_fd, buf, sizeof (buf));
		1941
		1942	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1943	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1944	}
		1945
		1946	void inline_size
		1947	infy_init (EV_P)
		1948	{
		1949	if (fs_fd != -2)
		1950	return;
		1951
		1952	fs_fd = inotify_init ();
		1953
		1954	if (fs_fd >= 0)
		1955	{
		1956	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1957	ev_set_priority (&fs_w, EV_MAXPRI);
		1958	ev_io_start (EV_A_ &fs_w);
		1959	}
		1960	}
		1961
		1962	void inline_size
		1963	infy_fork (EV_P)
		1964	{
		1965	int slot;
		1966
		1967	if (fs_fd < 0)
		1968	return;
		1969
		1970	close (fs_fd);
		1971	fs_fd = inotify_init ();
		1972
		1973	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1974	{
		1975	WL w_ = fs_hash [slot].head;
		1976	fs_hash [slot].head = 0;
		1977
		1978	while (w_)
		1979	{
		1980	ev_stat *w = (ev_stat *)w_;
		1981	w_ = w_->next; /* lets us add this watcher */
		1982
		1983	w->wd = -1;
		1984
		1985	if (fs_fd >= 0)
		1986	infy_add (EV_A_ w); /* re-add, no matter what */
		1987	else
		1988	ev_timer_start (EV_A_ &w->timer);
		1989	}
		1990
		1991	}
		1992	}
		1993
		1994	#endif
		1995
		1996	void
		1997	ev_stat_stat (EV_P_ ev_stat *w)
		1998	{
		1999	if (lstat (w->path, &w->attr) < 0)
		2000	w->attr.st_nlink = 0;
		2001	else if (!w->attr.st_nlink)
		2002	w->attr.st_nlink = 1;
		2003	}
		2004
		2005	static void noinline
		2006	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2007	{
		2008	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2009
		2010	/* we copy this here each the time so that */
		2011	/* prev has the old value when the callback gets invoked */
		2012	w->prev = w->attr;
		2013	ev_stat_stat (EV_A_ w);
		2014
		2015	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2016	if (
		2017	w->prev.st_dev != w->attr.st_dev
		2018	|| w->prev.st_ino != w->attr.st_ino
		2019	|| w->prev.st_mode != w->attr.st_mode
		2020	|| w->prev.st_nlink != w->attr.st_nlink
		2021	|| w->prev.st_uid != w->attr.st_uid
		2022	|| w->prev.st_gid != w->attr.st_gid
		2023	|| w->prev.st_rdev != w->attr.st_rdev
		2024	|| w->prev.st_size != w->attr.st_size
		2025	|| w->prev.st_atime != w->attr.st_atime
		2026	|| w->prev.st_mtime != w->attr.st_mtime
		2027	|| w->prev.st_ctime != w->attr.st_ctime
		2028	) {
		2029	#if EV_USE_INOTIFY
		2030	infy_del (EV_A_ w);
		2031	infy_add (EV_A_ w);
		2032	ev_stat_stat (EV_A_ w); /* avoid race... */
		2033	#endif
		2034
		2035	ev_feed_event (EV_A_ w, EV_STAT);
		2036	}
		2037	}
		2038
		2039	void
		2040	ev_stat_start (EV_P_ ev_stat *w)
		2041	{
		2042	if (expect_false (ev_is_active (w)))
		2043	return;
		2044
		2045	/* since we use memcmp, we need to clear any padding data etc. */
		2046	memset (&w->prev, 0, sizeof (ev_statdata));
		2047	memset (&w->attr, 0, sizeof (ev_statdata));
		2048
		2049	ev_stat_stat (EV_A_ w);
		2050
		2051	if (w->interval < MIN_STAT_INTERVAL)
		2052	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2053
		2054	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2055	ev_set_priority (&w->timer, ev_priority (w));
		2056
		2057	#if EV_USE_INOTIFY
		2058	infy_init (EV_A);
		2059
		2060	if (fs_fd >= 0)
		2061	infy_add (EV_A_ w);
		2062	else
		2063	#endif
		2064	ev_timer_start (EV_A_ &w->timer);
		2065
		2066	ev_start (EV_A_ (W)w, 1);
		2067	}
		2068
		2069	void
		2070	ev_stat_stop (EV_P_ ev_stat *w)
		2071	{
		2072	clear_pending (EV_A_ (W)w);
		2073	if (expect_false (!ev_is_active (w)))
		2074	return;
		2075
		2076	#if EV_USE_INOTIFY
		2077	infy_del (EV_A_ w);
		2078	#endif
		2079	ev_timer_stop (EV_A_ &w->timer);
		2080
		2081	ev_stop (EV_A_ (W)w);
		2082	}
		2083	#endif
		2084
		2085	#if EV_IDLE_ENABLE
		2086	void
		2087	ev_idle_start (EV_P_ ev_idle *w)
		2088	{
		2089	if (expect_false (ev_is_active (w)))
		2090	return;
		2091
		2092	pri_adjust (EV_A_ (W)w);
		2093
		2094	{
		2095	int active = ++idlecnt [ABSPRI (w)];
		2096
		2097	++idleall;
		2098	ev_start (EV_A_ (W)w, active);
		2099
		2100	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2101	idles [ABSPRI (w)][active - 1] = w;
		2102	}
		2103	}
		2104
		2105	void
		2106	ev_idle_stop (EV_P_ ev_idle *w)
		2107	{
		2108	clear_pending (EV_A_ (W)w);
		2109	if (expect_false (!ev_is_active (w)))
		2110	return;
		2111
		2112	{
		2113	int active = ((W)w)->active;
		2114
		2115	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2116	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2117
		2118	ev_stop (EV_A_ (W)w);
		2119	--idleall;
		2120	}
		2121	}
		2122	#endif
		2123
		2124	void
		2125	ev_prepare_start (EV_P_ ev_prepare *w)
		2126	{
		2127	if (expect_false (ev_is_active (w)))
		2128	return;
		2129
		2130	ev_start (EV_A_ (W)w, ++preparecnt);
		2131	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2132	prepares [preparecnt - 1] = w;
		2133	}
		2134
		2135	void
		2136	ev_prepare_stop (EV_P_ ev_prepare *w)
		2137	{
		2138	clear_pending (EV_A_ (W)w);
		2139	if (expect_false (!ev_is_active (w)))
		2140	return;
		2141
		2142	{
		2143	int active = ((W)w)->active;
		2144	prepares [active - 1] = prepares [--preparecnt];
		2145	((W)prepares [active - 1])->active = active;
		2146	}
		2147
		2148	ev_stop (EV_A_ (W)w);
		2149	}
		2150
		2151	void
		2152	ev_check_start (EV_P_ ev_check *w)
		2153	{
		2154	if (expect_false (ev_is_active (w)))
		2155	return;
		2156
		2157	ev_start (EV_A_ (W)w, ++checkcnt);
		2158	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2159	checks [checkcnt - 1] = w;
		2160	}
		2161
		2162	void
		2163	ev_check_stop (EV_P_ ev_check *w)
		2164	{
		2165	clear_pending (EV_A_ (W)w);
		2166	if (expect_false (!ev_is_active (w)))
		2167	return;
		2168
		2169	{
		2170	int active = ((W)w)->active;
		2171	checks [active - 1] = checks [--checkcnt];
		2172	((W)checks [active - 1])->active = active;
		2173	}
		2174
		2175	ev_stop (EV_A_ (W)w);
		2176	}
		2177
		2178	#if EV_EMBED_ENABLE
		2179	void noinline
		2180	ev_embed_sweep (EV_P_ ev_embed *w)
		2181	{
		2182	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2183	}
		2184
		2185	static void
		2186	embed_cb (EV_P_ ev_io *io, int revents)
		2187	{
		2188	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2189
		2190	if (ev_cb (w))
		2191	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2192	else
		2193	ev_embed_sweep (loop, w);
		2194	}
		2195
		2196	void
		2197	ev_embed_start (EV_P_ ev_embed *w)
		2198	{
		2199	if (expect_false (ev_is_active (w)))
		2200	return;
		2201
		2202	{
		2203	struct ev_loop *loop = w->loop;
		2204	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2205	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2206	}
		2207
		2208	ev_set_priority (&w->io, ev_priority (w));
		2209	ev_io_start (EV_A_ &w->io);
		2210
		2211	ev_start (EV_A_ (W)w, 1);
		2212	}
		2213
		2214	void
		2215	ev_embed_stop (EV_P_ ev_embed *w)
		2216	{
		2217	clear_pending (EV_A_ (W)w);
		2218	if (expect_false (!ev_is_active (w)))
		2219	return;
		2220
		2221	ev_io_stop (EV_A_ &w->io);
		2222
		2223	ev_stop (EV_A_ (W)w);
		2224	}
		2225	#endif
		2226
		2227	#if EV_FORK_ENABLE
		2228	void
		2229	ev_fork_start (EV_P_ ev_fork *w)
		2230	{
		2231	if (expect_false (ev_is_active (w)))
		2232	return;
		2233
		2234	ev_start (EV_A_ (W)w, ++forkcnt);
		2235	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2236	forks [forkcnt - 1] = w;
		2237	}
		2238
		2239	void
		2240	ev_fork_stop (EV_P_ ev_fork *w)
		2241	{
		2242	clear_pending (EV_A_ (W)w);
		2243	if (expect_false (!ev_is_active (w)))
		2244	return;
		2245
		2246	{
		2247	int active = ((W)w)->active;
		2248	forks [active - 1] = forks [--forkcnt];
		2249	((W)forks [active - 1])->active = active;
		2250	}
		2251
		2252	ev_stop (EV_A_ (W)w);
		2253	}
		2254	#endif
		2255
1585	/*****************************************************************************/	2256	/*****************************************************************************/
1586		2257
1587	struct ev_once	2258	struct ev_once
1588	{	2259	{
1589	struct ev_io io;	2260	ev_io io;
1590	struct ev_timer to;	2261	ev_timer to;
1591	void (*cb)(int revents, void *arg);	2262	void (*cb)(int revents, void *arg);
1592	void *arg;	2263	void *arg;
1593	};	2264	};
1594		2265
1595	static void	2266	static void
…		…
1604		2275
1605	cb (revents, arg);	2276	cb (revents, arg);
1606	}	2277	}
1607		2278
1608	static void	2279	static void
1609	once_cb_io (EV_P_ struct ev_io *w, int revents)	2280	once_cb_io (EV_P_ ev_io *w, int revents)
1610	{	2281	{
1611	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2282	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1612	}	2283	}
1613		2284
1614	static void	2285	static void
1615	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2286	once_cb_to (EV_P_ ev_timer *w, int revents)
1616	{	2287	{
1617	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2288	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1618	}	2289	}
1619		2290
1620	void	2291	void
1621	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2292	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1622	{	2293	{
1623	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	2294	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1624		2295
1625	if (!once)	2296	if (expect_false (!once))
		2297	{
1626	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2298	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1627	else	2299	return;
1628	{	2300	}
		2301
1629	once->cb = cb;	2302	once->cb = cb;
1630	once->arg = arg;	2303	once->arg = arg;
1631		2304
1632	ev_init (&once->io, once_cb_io);	2305	ev_init (&once->io, once_cb_io);
1633	if (fd >= 0)	2306	if (fd >= 0)
1634	{	2307	{
1635	ev_io_set (&once->io, fd, events);	2308	ev_io_set (&once->io, fd, events);
1636	ev_io_start (EV_A_ &once->io);	2309	ev_io_start (EV_A_ &once->io);
1637	}	2310	}
1638		2311
1639	ev_init (&once->to, once_cb_to);	2312	ev_init (&once->to, once_cb_to);
1640	if (timeout >= 0.)	2313	if (timeout >= 0.)
1641	{	2314	{
1642	ev_timer_set (&once->to, timeout, 0.);	2315	ev_timer_set (&once->to, timeout, 0.);
1643	ev_timer_start (EV_A_ &once->to);	2316	ev_timer_start (EV_A_ &once->to);
1644	}
1645	}	2317	}
1646	}	2318	}
1647		2319
1648	#ifdef __cplusplus	2320	#ifdef __cplusplus
1649	}	2321	}

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