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Comparing libev/ev.c (file contents):
Revision 1.120 by root, Fri Nov 16 01:54:25 2007 UTC vs.
Revision 1.180 by root, Tue Dec 11 22:04:55 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
62	# endif	89	# endif
63		90
64	# if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT)	91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
65	# define EV_USE_PORT 1	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
66	# endif	105	# endif
67		106
68	#endif	107	#endif
69		108
70	#include <math.h>	109	#include <math.h>
…		…
79	#include <sys/types.h>	118	#include <sys/types.h>
80	#include <time.h>	119	#include <time.h>
81		120
82	#include <signal.h>	121	#include <signal.h>
83		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
84	#ifndef _WIN32	129	#ifndef _WIN32
85	# include <unistd.h>
86	# include <sys/time.h>	130	# include <sys/time.h>
87	# include <sys/wait.h>	131	# include <sys/wait.h>
		132	# include <unistd.h>
88	#else	133	#else
89	# define WIN32_LEAN_AND_MEAN	134	# define WIN32_LEAN_AND_MEAN
90	# include <windows.h>	135	# include <windows.h>
91	# ifndef EV_SELECT_IS_WINSOCKET	136	# ifndef EV_SELECT_IS_WINSOCKET
92	# define EV_SELECT_IS_WINSOCKET 1	137	# define EV_SELECT_IS_WINSOCKET 1
…		…
94	#endif	139	#endif
95		140
96	/**/	141	/**/
97		142
98	#ifndef EV_USE_MONOTONIC	143	#ifndef EV_USE_MONOTONIC
99	# define EV_USE_MONOTONIC 1	144	# define EV_USE_MONOTONIC 0
100	#endif	145	#endif
101		146
102	#ifndef EV_USE_REALTIME	147	#ifndef EV_USE_REALTIME
103	# define EV_USE_REALTIME 1	148	# define EV_USE_REALTIME 0
104	#endif	149	#endif
105		150
106	#ifndef EV_USE_SELECT	151	#ifndef EV_USE_SELECT
107	# define EV_USE_SELECT 1	152	# define EV_USE_SELECT 1
108	# define EV_SELECT_USE_FD_SET 1
109	#endif	153	#endif
110		154
111	#ifndef EV_USE_POLL	155	#ifndef EV_USE_POLL
112	# ifdef _WIN32	156	# ifdef _WIN32
113	# define EV_USE_POLL 0	157	# define EV_USE_POLL 0
…		…
126		170
127	#ifndef EV_USE_PORT	171	#ifndef EV_USE_PORT
128	# define EV_USE_PORT 0	172	# define EV_USE_PORT 0
129	#endif	173	#endif
130		174
		175	#ifndef EV_USE_INOTIFY
		176	# define EV_USE_INOTIFY 0
		177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
		182	# else
		183	# define EV_PID_HASHSIZE 16
		184	# endif
		185	#endif
		186
		187	#ifndef EV_INOTIFY_HASHSIZE
		188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
		193	#endif
		194
131	/**/	195	/**/
132
133	/* darwin simply cannot be helped */
134	#ifdef __APPLE__
135	# undef EV_USE_POLL
136	# undef EV_USE_KQUEUE
137	#endif
138		196
139	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
140	# undef EV_USE_MONOTONIC	198	# undef EV_USE_MONOTONIC
141	# define EV_USE_MONOTONIC 0	199	# define EV_USE_MONOTONIC 0
142	#endif	200	#endif
…		…
148		206
149	#if EV_SELECT_IS_WINSOCKET	207	#if EV_SELECT_IS_WINSOCKET
150	# include <winsock.h>	208	# include <winsock.h>
151	#endif	209	#endif
152		210
		211	#if !EV_STAT_ENABLE
		212	# define EV_USE_INOTIFY 0
		213	#endif
		214
		215	#if EV_USE_INOTIFY
		216	# include <sys/inotify.h>
		217	#endif
		218
153	/**/	219	/**/
		220
		221	/*
		222	* This is used to avoid floating point rounding problems.
		223	* It is added to ev_rt_now when scheduling periodics
		224	* to ensure progress, time-wise, even when rounding
		225	* errors are against us.
		226	* This value is good at least till the year 4000.
		227	* Better solutions welcome.
		228	*/
		229	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
154		230
155	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	231	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
156	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	232	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
157	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
158	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */	233	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
159
160	#ifdef EV_H
161	# include EV_H
162	#else
163	# include "ev.h"
164	#endif
165		234
166	#if __GNUC__ >= 3	235	#if __GNUC__ >= 3
167	# define expect(expr,value) __builtin_expect ((expr),(value))	236	# define expect(expr,value) __builtin_expect ((expr),(value))
168	# define inline inline	237	# define noinline __attribute__ ((noinline))
169	#else	238	#else
170	# define expect(expr,value) (expr)	239	# define expect(expr,value) (expr)
171	# define inline static	240	# define noinline
		241	# if __STDC_VERSION__ < 199901L
		242	# define inline
		243	# endif
172	#endif	244	#endif
173		245
174	#define expect_false(expr) expect ((expr) != 0, 0)	246	#define expect_false(expr) expect ((expr) != 0, 0)
175	#define expect_true(expr) expect ((expr) != 0, 1)	247	#define expect_true(expr) expect ((expr) != 0, 1)
		248	#define inline_size static inline
		249
		250	#if EV_MINIMAL
		251	# define inline_speed static noinline
		252	#else
		253	# define inline_speed static inline
		254	#endif
176		255
177	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	256	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
178	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	257	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
179		258
180	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	259	#define EMPTY /* required for microsofts broken pseudo-c compiler */
181	#define EMPTY2(a,b) /* used to suppress some warnings */	260	#define EMPTY2(a,b) /* used to suppress some warnings */
182		261
183	typedef struct ev_watcher *W;	262	typedef ev_watcher *W;
184	typedef struct ev_watcher_list *WL;	263	typedef ev_watcher_list *WL;
185	typedef struct ev_watcher_time *WT;	264	typedef ev_watcher_time *WT;
186		265
187	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	266	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
188		267
189	#ifdef _WIN32	268	#ifdef _WIN32
190	# include "ev_win32.c"	269	# include "ev_win32.c"
…		…
192		271
193	/*****************************************************************************/	272	/*****************************************************************************/
194		273
195	static void (*syserr_cb)(const char *msg);	274	static void (*syserr_cb)(const char *msg);
196		275
		276	void
197	void ev_set_syserr_cb (void (*cb)(const char *msg))	277	ev_set_syserr_cb (void (*cb)(const char *msg))
198	{	278	{
199	syserr_cb = cb;	279	syserr_cb = cb;
200	}	280	}
201		281
202	static void	282	static void noinline
203	syserr (const char *msg)	283	syserr (const char *msg)
204	{	284	{
205	if (!msg)	285	if (!msg)
206	msg = "(libev) system error";	286	msg = "(libev) system error";
207		287
…		…
214	}	294	}
215	}	295	}
216		296
217	static void *(*alloc)(void *ptr, long size);	297	static void *(*alloc)(void *ptr, long size);
218		298
		299	void
219	void ev_set_allocator (void *(*cb)(void *ptr, long size))	300	ev_set_allocator (void *(*cb)(void *ptr, long size))
220	{	301	{
221	alloc = cb;	302	alloc = cb;
222	}	303	}
223		304
224	static void *	305	inline_speed void *
225	ev_realloc (void *ptr, long size)	306	ev_realloc (void *ptr, long size)
226	{	307	{
227	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
228		309
229	if (!ptr && size)	310	if (!ptr && size)
…		…
253	typedef struct	334	typedef struct
254	{	335	{
255	W w;	336	W w;
256	int events;	337	int events;
257	} ANPENDING;	338	} ANPENDING;
		339
		340	#if EV_USE_INOTIFY
		341	typedef struct
		342	{
		343	WL head;
		344	} ANFS;
		345	#endif
258		346
259	#if EV_MULTIPLICITY	347	#if EV_MULTIPLICITY
260		348
261	struct ev_loop	349	struct ev_loop
262	{	350	{
…		…
296	gettimeofday (&tv, 0);	384	gettimeofday (&tv, 0);
297	return tv.tv_sec + tv.tv_usec * 1e-6;	385	return tv.tv_sec + tv.tv_usec * 1e-6;
298	#endif	386	#endif
299	}	387	}
300		388
301	inline ev_tstamp	389	ev_tstamp inline_size
302	get_clock (void)	390	get_clock (void)
303	{	391	{
304	#if EV_USE_MONOTONIC	392	#if EV_USE_MONOTONIC
305	if (expect_true (have_monotonic))	393	if (expect_true (have_monotonic))
306	{	394	{
…		…
319	{	407	{
320	return ev_rt_now;	408	return ev_rt_now;
321	}	409	}
322	#endif	410	#endif
323		411
324	#define array_roundsize(type,n) (((n) | 4) & ~3)	412	int inline_size
		413	array_nextsize (int elem, int cur, int cnt)
		414	{
		415	int ncur = cur + 1;
		416
		417	do
		418	ncur <<= 1;
		419	while (cnt > ncur);
		420
		421	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		422	if (elem * ncur > 4096)
		423	{
		424	ncur *= elem;
		425	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		426	ncur = ncur - sizeof (void *) * 4;
		427	ncur /= elem;
		428	}
		429
		430	return ncur;
		431	}
		432
		433	static noinline void *
		434	array_realloc (int elem, void *base, int *cur, int cnt)
		435	{
		436	*cur = array_nextsize (elem, *cur, cnt);
		437	return ev_realloc (base, elem * *cur);
		438	}
325		439
326	#define array_needsize(type,base,cur,cnt,init) \	440	#define array_needsize(type,base,cur,cnt,init) \
327	if (expect_false ((cnt) > cur)) \	441	if (expect_false ((cnt) > (cur))) \
328	{ \	442	{ \
329	int newcnt = cur; \	443	int ocur_ = (cur); \
330	do \	444	(base) = (type *)array_realloc \
331	{ \	445	(sizeof (type), (base), &(cur), (cnt)); \
332	newcnt = array_roundsize (type, newcnt << 1); \	446	init ((base) + (ocur_), (cur) - ocur_); \
333	} \
334	while ((cnt) > newcnt); \
335	\
336	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
337	init (base + cur, newcnt - cur); \
338	cur = newcnt; \
339	}	447	}
340		448
		449	#if 0
341	#define array_slim(type,stem) \	450	#define array_slim(type,stem) \
342	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	451	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
343	{ \	452	{ \
344	stem ## max = array_roundsize (stem ## cnt >> 1); \	453	stem ## max = array_roundsize (stem ## cnt >> 1); \
345	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	454	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
346	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	455	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
347	}	456	}
		457	#endif
348		458
349	#define array_free(stem, idx) \	459	#define array_free(stem, idx) \
350	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	460	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
351		461
352	/*****************************************************************************/	462	/*****************************************************************************/
353		463
354	static void	464	void noinline
		465	ev_feed_event (EV_P_ void *w, int revents)
		466	{
		467	W w_ = (W)w;
		468	int pri = ABSPRI (w_);
		469
		470	if (expect_false (w_->pending))
		471	pendings [pri][w_->pending - 1].events |= revents;
		472	else
		473	{
		474	w_->pending = ++pendingcnt [pri];
		475	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		476	pendings [pri][w_->pending - 1].w = w_;
		477	pendings [pri][w_->pending - 1].events = revents;
		478	}
		479	}
		480
		481	void inline_speed
		482	queue_events (EV_P_ W *events, int eventcnt, int type)
		483	{
		484	int i;
		485
		486	for (i = 0; i < eventcnt; ++i)
		487	ev_feed_event (EV_A_ events [i], type);
		488	}
		489
		490	/*****************************************************************************/
		491
		492	void inline_size
355	anfds_init (ANFD *base, int count)	493	anfds_init (ANFD *base, int count)
356	{	494	{
357	while (count--)	495	while (count--)
358	{	496	{
359	base->head = 0;	497	base->head = 0;
…		…
362		500
363	++base;	501	++base;
364	}	502	}
365	}	503	}
366		504
367	void	505	void inline_speed
368	ev_feed_event (EV_P_ void *w, int revents)
369	{
370	W w_ = (W)w;
371
372	if (w_->pending)
373	{
374	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
375	return;
376	}
377
378	w_->pending = ++pendingcnt [ABSPRI (w_)];
379	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
380	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
381	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
382	}
383
384	static void
385	queue_events (EV_P_ W *events, int eventcnt, int type)
386	{
387	int i;
388
389	for (i = 0; i < eventcnt; ++i)
390	ev_feed_event (EV_A_ events [i], type);
391	}
392
393	inline void
394	fd_event (EV_P_ int fd, int revents)	506	fd_event (EV_P_ int fd, int revents)
395	{	507	{
396	ANFD *anfd = anfds + fd;	508	ANFD *anfd = anfds + fd;
397	struct ev_io *w;	509	ev_io *w;
398		510
399	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	511	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
400	{	512	{
401	int ev = w->events & revents;	513	int ev = w->events & revents;
402		514
403	if (ev)	515	if (ev)
404	ev_feed_event (EV_A_ (W)w, ev);	516	ev_feed_event (EV_A_ (W)w, ev);
…		…
406	}	518	}
407		519
408	void	520	void
409	ev_feed_fd_event (EV_P_ int fd, int revents)	521	ev_feed_fd_event (EV_P_ int fd, int revents)
410	{	522	{
		523	if (fd >= 0 && fd < anfdmax)
411	fd_event (EV_A_ fd, revents);	524	fd_event (EV_A_ fd, revents);
412	}	525	}
413		526
414	/*****************************************************************************/	527	void inline_size
415
416	static void
417	fd_reify (EV_P)	528	fd_reify (EV_P)
418	{	529	{
419	int i;	530	int i;
420		531
421	for (i = 0; i < fdchangecnt; ++i)	532	for (i = 0; i < fdchangecnt; ++i)
422	{	533	{
423	int fd = fdchanges [i];	534	int fd = fdchanges [i];
424	ANFD *anfd = anfds + fd;	535	ANFD *anfd = anfds + fd;
425	struct ev_io *w;	536	ev_io *w;
426		537
427	int events = 0;	538	int events = 0;
428		539
429	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	540	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
430	events |= w->events;	541	events |= w->events;
431		542
432	#if EV_SELECT_IS_WINSOCKET	543	#if EV_SELECT_IS_WINSOCKET
433	if (events)	544	if (events)
434	{	545	{
…		…
438	}	549	}
439	#endif	550	#endif
440		551
441	anfd->reify = 0;	552	anfd->reify = 0;
442		553
443	method_modify (EV_A_ fd, anfd->events, events);	554	backend_modify (EV_A_ fd, anfd->events, events);
444	anfd->events = events;	555	anfd->events = events;
445	}	556	}
446		557
447	fdchangecnt = 0;	558	fdchangecnt = 0;
448	}	559	}
449		560
450	static void	561	void inline_size
451	fd_change (EV_P_ int fd)	562	fd_change (EV_P_ int fd)
452	{	563	{
453	if (anfds [fd].reify)	564	if (expect_false (anfds [fd].reify))
454	return;	565	return;
455		566
456	anfds [fd].reify = 1;	567	anfds [fd].reify = 1;
457		568
458	++fdchangecnt;	569	++fdchangecnt;
459	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
460	fdchanges [fdchangecnt - 1] = fd;	571	fdchanges [fdchangecnt - 1] = fd;
461	}	572	}
462		573
463	static void	574	void inline_speed
464	fd_kill (EV_P_ int fd)	575	fd_kill (EV_P_ int fd)
465	{	576	{
466	struct ev_io *w;	577	ev_io *w;
467		578
468	while ((w = (struct ev_io *)anfds [fd].head))	579	while ((w = (ev_io *)anfds [fd].head))
469	{	580	{
470	ev_io_stop (EV_A_ w);	581	ev_io_stop (EV_A_ w);
471	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	582	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
472	}	583	}
473	}	584	}
474		585
475	static int	586	int inline_size
476	fd_valid (int fd)	587	fd_valid (int fd)
477	{	588	{
478	#ifdef _WIN32	589	#ifdef _WIN32
479	return _get_osfhandle (fd) != -1;	590	return _get_osfhandle (fd) != -1;
480	#else	591	#else
481	return fcntl (fd, F_GETFD) != -1;	592	return fcntl (fd, F_GETFD) != -1;
482	#endif	593	#endif
483	}	594	}
484		595
485	/* called on EBADF to verify fds */	596	/* called on EBADF to verify fds */
486	static void	597	static void noinline
487	fd_ebadf (EV_P)	598	fd_ebadf (EV_P)
488	{	599	{
489	int fd;	600	int fd;
490		601
491	for (fd = 0; fd < anfdmax; ++fd)	602	for (fd = 0; fd < anfdmax; ++fd)
…		…
493	if (!fd_valid (fd) == -1 && errno == EBADF)	604	if (!fd_valid (fd) == -1 && errno == EBADF)
494	fd_kill (EV_A_ fd);	605	fd_kill (EV_A_ fd);
495	}	606	}
496		607
497	/* called on ENOMEM in select/poll to kill some fds and retry */	608	/* called on ENOMEM in select/poll to kill some fds and retry */
498	static void	609	static void noinline
499	fd_enomem (EV_P)	610	fd_enomem (EV_P)
500	{	611	{
501	int fd;	612	int fd;
502		613
503	for (fd = anfdmax; fd--; )	614	for (fd = anfdmax; fd--; )
…		…
506	fd_kill (EV_A_ fd);	617	fd_kill (EV_A_ fd);
507	return;	618	return;
508	}	619	}
509	}	620	}
510		621
511	/* usually called after fork if method needs to re-arm all fds from scratch */	622	/* usually called after fork if backend needs to re-arm all fds from scratch */
512	static void	623	static void noinline
513	fd_rearm_all (EV_P)	624	fd_rearm_all (EV_P)
514	{	625	{
515	int fd;	626	int fd;
516		627
517	/* this should be highly optimised to not do anything but set a flag */
518	for (fd = 0; fd < anfdmax; ++fd)	628	for (fd = 0; fd < anfdmax; ++fd)
519	if (anfds [fd].events)	629	if (anfds [fd].events)
520	{	630	{
521	anfds [fd].events = 0;	631	anfds [fd].events = 0;
522	fd_change (EV_A_ fd);	632	fd_change (EV_A_ fd);
523	}	633	}
524	}	634	}
525		635
526	/*****************************************************************************/	636	/*****************************************************************************/
527		637
528	static void	638	void inline_speed
529	upheap (WT *heap, int k)	639	upheap (WT *heap, int k)
530	{	640	{
531	WT w = heap [k];	641	WT w = heap [k];
532		642
533	while (k && heap [k >> 1]->at > w->at)	643	while (k)
534	{	644	{
		645	int p = (k - 1) >> 1;
		646
		647	if (heap [p]->at <= w->at)
		648	break;
		649
535	heap [k] = heap [k >> 1];	650	heap [k] = heap [p];
536	((W)heap [k])->active = k + 1;	651	((W)heap [k])->active = k + 1;
537	k >>= 1;	652	k = p;
538	}	653	}
539		654
540	heap [k] = w;	655	heap [k] = w;
541	((W)heap [k])->active = k + 1;	656	((W)heap [k])->active = k + 1;
542		657
543	}	658	}
544		659
545	static void	660	void inline_speed
546	downheap (WT *heap, int N, int k)	661	downheap (WT *heap, int N, int k)
547	{	662	{
548	WT w = heap [k];	663	WT w = heap [k];
549		664
550	while (k < (N >> 1))	665	for (;;)
551	{	666	{
552	int j = k << 1;	667	int c = (k << 1) + 1;
553		668
554	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	669	if (c >= N)
555	++j;
556
557	if (w->at <= heap [j]->at)
558	break;	670	break;
559		671
		672	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		673	? 1 : 0;
		674
		675	if (w->at <= heap [c]->at)
		676	break;
		677
560	heap [k] = heap [j];	678	heap [k] = heap [c];
561	((W)heap [k])->active = k + 1;	679	((W)heap [k])->active = k + 1;
		680
562	k = j;	681	k = c;
563	}	682	}
564		683
565	heap [k] = w;	684	heap [k] = w;
566	((W)heap [k])->active = k + 1;	685	((W)heap [k])->active = k + 1;
567	}	686	}
568		687
569	inline void	688	void inline_size
570	adjustheap (WT *heap, int N, int k)	689	adjustheap (WT *heap, int N, int k)
571	{	690	{
572	upheap (heap, k);	691	upheap (heap, k);
573	downheap (heap, N, k);	692	downheap (heap, N, k);
574	}	693	}
…		…
584	static ANSIG *signals;	703	static ANSIG *signals;
585	static int signalmax;	704	static int signalmax;
586		705
587	static int sigpipe [2];	706	static int sigpipe [2];
588	static sig_atomic_t volatile gotsig;	707	static sig_atomic_t volatile gotsig;
589	static struct ev_io sigev;	708	static ev_io sigev;
590		709
591	static void	710	void inline_size
592	signals_init (ANSIG *base, int count)	711	signals_init (ANSIG *base, int count)
593	{	712	{
594	while (count--)	713	while (count--)
595	{	714	{
596	base->head = 0;	715	base->head = 0;
…		…
616	write (sigpipe [1], &signum, 1);	735	write (sigpipe [1], &signum, 1);
617	errno = old_errno;	736	errno = old_errno;
618	}	737	}
619	}	738	}
620		739
621	void	740	void noinline
622	ev_feed_signal_event (EV_P_ int signum)	741	ev_feed_signal_event (EV_P_ int signum)
623	{	742	{
624	WL w;	743	WL w;
625		744
626	#if EV_MULTIPLICITY	745	#if EV_MULTIPLICITY
…		…
637	for (w = signals [signum].head; w; w = w->next)	756	for (w = signals [signum].head; w; w = w->next)
638	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	757	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
639	}	758	}
640		759
641	static void	760	static void
642	sigcb (EV_P_ struct ev_io *iow, int revents)	761	sigcb (EV_P_ ev_io *iow, int revents)
643	{	762	{
644	int signum;	763	int signum;
645		764
646	read (sigpipe [0], &revents, 1);	765	read (sigpipe [0], &revents, 1);
647	gotsig = 0;	766	gotsig = 0;
…		…
649	for (signum = signalmax; signum--; )	768	for (signum = signalmax; signum--; )
650	if (signals [signum].gotsig)	769	if (signals [signum].gotsig)
651	ev_feed_signal_event (EV_A_ signum + 1);	770	ev_feed_signal_event (EV_A_ signum + 1);
652	}	771	}
653		772
654	inline void	773	void inline_speed
655	fd_intern (int fd)	774	fd_intern (int fd)
656	{	775	{
657	#ifdef _WIN32	776	#ifdef _WIN32
658	int arg = 1;	777	int arg = 1;
659	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	778	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
661	fcntl (fd, F_SETFD, FD_CLOEXEC);	780	fcntl (fd, F_SETFD, FD_CLOEXEC);
662	fcntl (fd, F_SETFL, O_NONBLOCK);	781	fcntl (fd, F_SETFL, O_NONBLOCK);
663	#endif	782	#endif
664	}	783	}
665		784
666	static void	785	static void noinline
667	siginit (EV_P)	786	siginit (EV_P)
668	{	787	{
669	fd_intern (sigpipe [0]);	788	fd_intern (sigpipe [0]);
670	fd_intern (sigpipe [1]);	789	fd_intern (sigpipe [1]);
671		790
…		…
674	ev_unref (EV_A); /* child watcher should not keep loop alive */	793	ev_unref (EV_A); /* child watcher should not keep loop alive */
675	}	794	}
676		795
677	/*****************************************************************************/	796	/*****************************************************************************/
678		797
679	static struct ev_child *childs [PID_HASHSIZE];	798	static ev_child *childs [EV_PID_HASHSIZE];
680		799
681	#ifndef _WIN32	800	#ifndef _WIN32
682		801
683	static struct ev_signal childev;	802	static ev_signal childev;
		803
		804	void inline_speed
		805	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		806	{
		807	ev_child *w;
		808
		809	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		810	if (w->pid == pid || !w->pid)
		811	{
		812	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		813	w->rpid = pid;
		814	w->rstatus = status;
		815	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		816	}
		817	}
684		818
685	#ifndef WCONTINUED	819	#ifndef WCONTINUED
686	# define WCONTINUED 0	820	# define WCONTINUED 0
687	#endif	821	#endif
688		822
689	static void	823	static void
690	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
691	{
692	struct ev_child *w;
693
694	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
695	if (w->pid == pid || !w->pid)
696	{
697	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
698	w->rpid = pid;
699	w->rstatus = status;
700	ev_feed_event (EV_A_ (W)w, EV_CHILD);
701	}
702	}
703
704	static void
705	childcb (EV_P_ struct ev_signal *sw, int revents)	824	childcb (EV_P_ ev_signal *sw, int revents)
706	{	825	{
707	int pid, status;	826	int pid, status;
708		827
		828	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
709	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	829	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
710	{	830	if (!WCONTINUED
		831	|| errno != EINVAL
		832	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		833	return;
		834
711	/* make sure we are called again until all childs have been reaped */	835	/* make sure we are called again until all childs have been reaped */
		836	/* we need to do it this way so that the callback gets called before we continue */
712	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	837	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
713		838
714	child_reap (EV_A_ sw, pid, pid, status);	839	child_reap (EV_A_ sw, pid, pid, status);
		840	if (EV_PID_HASHSIZE > 1)
715	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	841	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
716	}
717	}	842	}
718		843
719	#endif	844	#endif
720		845
721	/*****************************************************************************/	846	/*****************************************************************************/
…		…
747	{	872	{
748	return EV_VERSION_MINOR;	873	return EV_VERSION_MINOR;
749	}	874	}
750		875
751	/* return true if we are running with elevated privileges and should ignore env variables */	876	/* return true if we are running with elevated privileges and should ignore env variables */
752	static int	877	int inline_size
753	enable_secure (void)	878	enable_secure (void)
754	{	879	{
755	#ifdef _WIN32	880	#ifdef _WIN32
756	return 0;	881	return 0;
757	#else	882	#else
…		…
759	|| getgid () != getegid ();	884	|| getgid () != getegid ();
760	#endif	885	#endif
761	}	886	}
762		887
763	unsigned int	888	unsigned int
764	ev_method (EV_P)	889	ev_supported_backends (void)
765	{	890	{
766	return method;	891	unsigned int flags = 0;
767	}
768		892
769	static void	893	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		894	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		895	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		896	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		897	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		898
		899	return flags;
		900	}
		901
		902	unsigned int
		903	ev_recommended_backends (void)
		904	{
		905	unsigned int flags = ev_supported_backends ();
		906
		907	#ifndef __NetBSD__
		908	/* kqueue is borked on everything but netbsd apparently */
		909	/* it usually doesn't work correctly on anything but sockets and pipes */
		910	flags &= ~EVBACKEND_KQUEUE;
		911	#endif
		912	#ifdef __APPLE__
		913	// flags &= ~EVBACKEND_KQUEUE; for documentation
		914	flags &= ~EVBACKEND_POLL;
		915	#endif
		916
		917	return flags;
		918	}
		919
		920	unsigned int
		921	ev_embeddable_backends (void)
		922	{
		923	return EVBACKEND_EPOLL
		924	| EVBACKEND_KQUEUE
		925	| EVBACKEND_PORT;
		926	}
		927
		928	unsigned int
		929	ev_backend (EV_P)
		930	{
		931	return backend;
		932	}
		933
		934	unsigned int
		935	ev_loop_count (EV_P)
		936	{
		937	return loop_count;
		938	}
		939
		940	static void noinline
770	loop_init (EV_P_ unsigned int flags)	941	loop_init (EV_P_ unsigned int flags)
771	{	942	{
772	if (!method)	943	if (!backend)
773	{	944	{
774	#if EV_USE_MONOTONIC	945	#if EV_USE_MONOTONIC
775	{	946	{
776	struct timespec ts;	947	struct timespec ts;
777	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	948	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
782	ev_rt_now = ev_time ();	953	ev_rt_now = ev_time ();
783	mn_now = get_clock ();	954	mn_now = get_clock ();
784	now_floor = mn_now;	955	now_floor = mn_now;
785	rtmn_diff = ev_rt_now - mn_now;	956	rtmn_diff = ev_rt_now - mn_now;
786		957
787	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))	958	/* pid check not overridable via env */
		959	#ifndef _WIN32
		960	if (flags & EVFLAG_FORKCHECK)
		961	curpid = getpid ();
		962	#endif
		963
		964	if (!(flags & EVFLAG_NOENV)
		965	&& !enable_secure ()
		966	&& getenv ("LIBEV_FLAGS"))
788	flags = atoi (getenv ("LIBEV_FLAGS"));	967	flags = atoi (getenv ("LIBEV_FLAGS"));
789		968
790	if (!(flags & 0x0000ffff))	969	if (!(flags & 0x0000ffffUL))
791	flags |= 0x0000ffff;	970	flags |= ev_recommended_backends ();
792		971
793	method = 0;	972	backend = 0;
		973	backend_fd = -1;
		974	#if EV_USE_INOTIFY
		975	fs_fd = -2;
		976	#endif
		977
794	#if EV_USE_PORT	978	#if EV_USE_PORT
795	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);	979	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
796	#endif	980	#endif
797	#if EV_USE_KQUEUE	981	#if EV_USE_KQUEUE
798	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);	982	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
799	#endif	983	#endif
800	#if EV_USE_EPOLL	984	#if EV_USE_EPOLL
801	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);	985	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
802	#endif	986	#endif
803	#if EV_USE_POLL	987	#if EV_USE_POLL
804	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);	988	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
805	#endif	989	#endif
806	#if EV_USE_SELECT	990	#if EV_USE_SELECT
807	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);	991	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
808	#endif	992	#endif
809		993
810	ev_init (&sigev, sigcb);	994	ev_init (&sigev, sigcb);
811	ev_set_priority (&sigev, EV_MAXPRI);	995	ev_set_priority (&sigev, EV_MAXPRI);
812	}	996	}
813	}	997	}
814		998
815	void	999	static void noinline
816	loop_destroy (EV_P)	1000	loop_destroy (EV_P)
817	{	1001	{
818	int i;	1002	int i;
819		1003
		1004	#if EV_USE_INOTIFY
		1005	if (fs_fd >= 0)
		1006	close (fs_fd);
		1007	#endif
		1008
		1009	if (backend_fd >= 0)
		1010	close (backend_fd);
		1011
820	#if EV_USE_PORT	1012	#if EV_USE_PORT
821	if (method == EVMETHOD_PORT ) port_destroy (EV_A);	1013	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
822	#endif	1014	#endif
823	#if EV_USE_KQUEUE	1015	#if EV_USE_KQUEUE
824	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1016	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
825	#endif	1017	#endif
826	#if EV_USE_EPOLL	1018	#if EV_USE_EPOLL
827	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1019	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
828	#endif	1020	#endif
829	#if EV_USE_POLL	1021	#if EV_USE_POLL
830	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1022	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
831	#endif	1023	#endif
832	#if EV_USE_SELECT	1024	#if EV_USE_SELECT
833	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1025	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
834	#endif	1026	#endif
835		1027
836	for (i = NUMPRI; i--; )	1028	for (i = NUMPRI; i--; )
		1029	{
837	array_free (pending, [i]);	1030	array_free (pending, [i]);
		1031	#if EV_IDLE_ENABLE
		1032	array_free (idle, [i]);
		1033	#endif
		1034	}
838		1035
839	/* have to use the microsoft-never-gets-it-right macro */	1036	/* have to use the microsoft-never-gets-it-right macro */
840	array_free (fdchange, EMPTY0);	1037	array_free (fdchange, EMPTY);
841	array_free (timer, EMPTY0);	1038	array_free (timer, EMPTY);
842	#if EV_PERIODICS	1039	#if EV_PERIODIC_ENABLE
843	array_free (periodic, EMPTY0);	1040	array_free (periodic, EMPTY);
844	#endif	1041	#endif
845	array_free (idle, EMPTY0);
846	array_free (prepare, EMPTY0);	1042	array_free (prepare, EMPTY);
847	array_free (check, EMPTY0);	1043	array_free (check, EMPTY);
848		1044
849	method = 0;	1045	backend = 0;
850	}	1046	}
851		1047
852	static void	1048	void inline_size infy_fork (EV_P);
		1049
		1050	void inline_size
853	loop_fork (EV_P)	1051	loop_fork (EV_P)
854	{	1052	{
855	#if EV_USE_PORT	1053	#if EV_USE_PORT
856	if (method == EVMETHOD_PORT ) port_fork (EV_A);	1054	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
857	#endif	1055	#endif
858	#if EV_USE_KQUEUE	1056	#if EV_USE_KQUEUE
859	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1057	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
860	#endif	1058	#endif
861	#if EV_USE_EPOLL	1059	#if EV_USE_EPOLL
862	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1060	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1061	#endif
		1062	#if EV_USE_INOTIFY
		1063	infy_fork (EV_A);
863	#endif	1064	#endif
864		1065
865	if (ev_is_active (&sigev))	1066	if (ev_is_active (&sigev))
866	{	1067	{
867	/* default loop */	1068	/* default loop */
…		…
888		1089
889	memset (loop, 0, sizeof (struct ev_loop));	1090	memset (loop, 0, sizeof (struct ev_loop));
890		1091
891	loop_init (EV_A_ flags);	1092	loop_init (EV_A_ flags);
892		1093
893	if (ev_method (EV_A))	1094	if (ev_backend (EV_A))
894	return loop;	1095	return loop;
895		1096
896	return 0;	1097	return 0;
897	}	1098	}
898		1099
…		…
911		1112
912	#endif	1113	#endif
913		1114
914	#if EV_MULTIPLICITY	1115	#if EV_MULTIPLICITY
915	struct ev_loop *	1116	struct ev_loop *
916	ev_default_loop_ (unsigned int flags)	1117	ev_default_loop_init (unsigned int flags)
917	#else	1118	#else
918	int	1119	int
919	ev_default_loop (unsigned int flags)	1120	ev_default_loop (unsigned int flags)
920	#endif	1121	#endif
921	{	1122	{
…		…
931	ev_default_loop_ptr = 1;	1132	ev_default_loop_ptr = 1;
932	#endif	1133	#endif
933		1134
934	loop_init (EV_A_ flags);	1135	loop_init (EV_A_ flags);
935		1136
936	if (ev_method (EV_A))	1137	if (ev_backend (EV_A))
937	{	1138	{
938	siginit (EV_A);	1139	siginit (EV_A);
939		1140
940	#ifndef _WIN32	1141	#ifndef _WIN32
941	ev_signal_init (&childev, childcb, SIGCHLD);	1142	ev_signal_init (&childev, childcb, SIGCHLD);
…		…
977	{	1178	{
978	#if EV_MULTIPLICITY	1179	#if EV_MULTIPLICITY
979	struct ev_loop *loop = ev_default_loop_ptr;	1180	struct ev_loop *loop = ev_default_loop_ptr;
980	#endif	1181	#endif
981		1182
982	if (method)	1183	if (backend)
983	postfork = 1;	1184	postfork = 1;
984	}	1185	}
985		1186
986	/*****************************************************************************/	1187	/*****************************************************************************/
987		1188
988	static int	1189	void
989	any_pending (EV_P)	1190	ev_invoke (EV_P_ void *w, int revents)
990	{	1191	{
991	int pri;	1192	EV_CB_INVOKE ((W)w, revents);
992
993	for (pri = NUMPRI; pri--; )
994	if (pendingcnt [pri])
995	return 1;
996
997	return 0;
998	}	1193	}
999		1194
1000	static void	1195	void inline_speed
1001	call_pending (EV_P)	1196	call_pending (EV_P)
1002	{	1197	{
1003	int pri;	1198	int pri;
1004		1199
1005	for (pri = NUMPRI; pri--; )	1200	for (pri = NUMPRI; pri--; )
1006	while (pendingcnt [pri])	1201	while (pendingcnt [pri])
1007	{	1202	{
1008	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1203	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1009		1204
1010	if (p->w)	1205	if (expect_true (p->w))
1011	{	1206	{
		1207	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1208
1012	p->w->pending = 0;	1209	p->w->pending = 0;
1013	EV_CB_INVOKE (p->w, p->events);	1210	EV_CB_INVOKE (p->w, p->events);
1014	}	1211	}
1015	}	1212	}
1016	}	1213	}
1017		1214
1018	static void	1215	void inline_size
1019	timers_reify (EV_P)	1216	timers_reify (EV_P)
1020	{	1217	{
1021	while (timercnt && ((WT)timers [0])->at <= mn_now)	1218	while (timercnt && ((WT)timers [0])->at <= mn_now)
1022	{	1219	{
1023	struct ev_timer *w = timers [0];	1220	ev_timer *w = timers [0];
1024		1221
1025	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1222	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1026		1223
1027	/* first reschedule or stop timer */	1224	/* first reschedule or stop timer */
1028	if (w->repeat)	1225	if (w->repeat)
1029	{	1226	{
1030	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1227	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
…		…
1040		1237
1041	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1238	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1042	}	1239	}
1043	}	1240	}
1044		1241
1045	#if EV_PERIODICS	1242	#if EV_PERIODIC_ENABLE
1046	static void	1243	void inline_size
1047	periodics_reify (EV_P)	1244	periodics_reify (EV_P)
1048	{	1245	{
1049	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1246	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1050	{	1247	{
1051	struct ev_periodic *w = periodics [0];	1248	ev_periodic *w = periodics [0];
1052		1249
1053	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1250	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1054		1251
1055	/* first reschedule or stop timer */	1252	/* first reschedule or stop timer */
1056	if (w->reschedule_cb)	1253	if (w->reschedule_cb)
1057	{	1254	{
1058	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1255	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1059	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1256	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1060	downheap ((WT *)periodics, periodiccnt, 0);	1257	downheap ((WT *)periodics, periodiccnt, 0);
1061	}	1258	}
1062	else if (w->interval)	1259	else if (w->interval)
1063	{	1260	{
1064	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1261	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1262	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1065	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1263	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1066	downheap ((WT *)periodics, periodiccnt, 0);	1264	downheap ((WT *)periodics, periodiccnt, 0);
1067	}	1265	}
1068	else	1266	else
1069	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1267	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1070		1268
1071	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1269	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1072	}	1270	}
1073	}	1271	}
1074		1272
1075	static void	1273	static void noinline
1076	periodics_reschedule (EV_P)	1274	periodics_reschedule (EV_P)
1077	{	1275	{
1078	int i;	1276	int i;
1079		1277
1080	/* adjust periodics after time jump */	1278	/* adjust periodics after time jump */
1081	for (i = 0; i < periodiccnt; ++i)	1279	for (i = 0; i < periodiccnt; ++i)
1082	{	1280	{
1083	struct ev_periodic *w = periodics [i];	1281	ev_periodic *w = periodics [i];
1084		1282
1085	if (w->reschedule_cb)	1283	if (w->reschedule_cb)
1086	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1284	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1087	else if (w->interval)	1285	else if (w->interval)
1088	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1286	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1089	}	1287	}
1090		1288
1091	/* now rebuild the heap */	1289	/* now rebuild the heap */
1092	for (i = periodiccnt >> 1; i--; )	1290	for (i = periodiccnt >> 1; i--; )
1093	downheap ((WT *)periodics, periodiccnt, i);	1291	downheap ((WT *)periodics, periodiccnt, i);
1094	}	1292	}
1095	#endif	1293	#endif
1096		1294
1097	inline int	1295	#if EV_IDLE_ENABLE
1098	time_update_monotonic (EV_P)	1296	void inline_size
		1297	idle_reify (EV_P)
1099	{	1298	{
		1299	if (expect_false (idleall))
		1300	{
		1301	int pri;
		1302
		1303	for (pri = NUMPRI; pri--; )
		1304	{
		1305	if (pendingcnt [pri])
		1306	break;
		1307
		1308	if (idlecnt [pri])
		1309	{
		1310	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1311	break;
		1312	}
		1313	}
		1314	}
		1315	}
		1316	#endif
		1317
		1318	void inline_speed
		1319	time_update (EV_P_ ev_tstamp max_block)
		1320	{
		1321	int i;
		1322
		1323	#if EV_USE_MONOTONIC
		1324	if (expect_true (have_monotonic))
		1325	{
		1326	ev_tstamp odiff = rtmn_diff;
		1327
1100	mn_now = get_clock ();	1328	mn_now = get_clock ();
1101		1329
		1330	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1331	/* interpolate in the meantime */
1102	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1332	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1103	{	1333	{
1104	ev_rt_now = rtmn_diff + mn_now;	1334	ev_rt_now = rtmn_diff + mn_now;
1105	return 0;	1335	return;
1106	}	1336	}
1107	else	1337
1108	{
1109	now_floor = mn_now;	1338	now_floor = mn_now;
1110	ev_rt_now = ev_time ();	1339	ev_rt_now = ev_time ();
1111	return 1;
1112	}
1113	}
1114		1340
1115	static void	1341	/* loop a few times, before making important decisions.
1116	time_update (EV_P)	1342	* on the choice of "4": one iteration isn't enough,
1117	{	1343	* in case we get preempted during the calls to
1118	int i;	1344	* ev_time and get_clock. a second call is almost guaranteed
1119		1345	* to succeed in that case, though. and looping a few more times
1120	#if EV_USE_MONOTONIC	1346	* doesn't hurt either as we only do this on time-jumps or
1121	if (expect_true (have_monotonic))	1347	* in the unlikely event of having been preempted here.
1122	{	1348	*/
1123	if (time_update_monotonic (EV_A))	1349	for (i = 4; --i; )
1124	{	1350	{
1125	ev_tstamp odiff = rtmn_diff;
1126
1127	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1128	{
1129	rtmn_diff = ev_rt_now - mn_now;	1351	rtmn_diff = ev_rt_now - mn_now;
1130		1352
1131	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1353	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1132	return; /* all is well */	1354	return; /* all is well */
1133		1355
1134	ev_rt_now = ev_time ();	1356	ev_rt_now = ev_time ();
1135	mn_now = get_clock ();	1357	mn_now = get_clock ();
1136	now_floor = mn_now;	1358	now_floor = mn_now;
1137	}	1359	}
1138		1360
1139	# if EV_PERIODICS	1361	# if EV_PERIODIC_ENABLE
		1362	periodics_reschedule (EV_A);
		1363	# endif
		1364	/* no timer adjustment, as the monotonic clock doesn't jump */
		1365	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1366	}
		1367	else
		1368	#endif
		1369	{
		1370	ev_rt_now = ev_time ();
		1371
		1372	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1373	{
		1374	#if EV_PERIODIC_ENABLE
1140	periodics_reschedule (EV_A);	1375	periodics_reschedule (EV_A);
1141	# endif	1376	#endif
1142	/* no timer adjustment, as the monotonic clock doesn't jump */
1143	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1144	}
1145	}
1146	else
1147	#endif
1148	{
1149	ev_rt_now = ev_time ();
1150
1151	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1152	{
1153	#if EV_PERIODICS
1154	periodics_reschedule (EV_A);
1155	#endif
1156
1157	/* adjust timers. this is easy, as the offset is the same for all */	1377	/* adjust timers. this is easy, as the offset is the same for all of them */
1158	for (i = 0; i < timercnt; ++i)	1378	for (i = 0; i < timercnt; ++i)
1159	((WT)timers [i])->at += ev_rt_now - mn_now;	1379	((WT)timers [i])->at += ev_rt_now - mn_now;
1160	}	1380	}
1161		1381
1162	mn_now = ev_rt_now;	1382	mn_now = ev_rt_now;
…		…
1178	static int loop_done;	1398	static int loop_done;
1179		1399
1180	void	1400	void
1181	ev_loop (EV_P_ int flags)	1401	ev_loop (EV_P_ int flags)
1182	{	1402	{
1183	double block;
1184	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1403	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1404	? EVUNLOOP_ONE
		1405	: EVUNLOOP_CANCEL;
1185		1406
1186	while (activecnt)	1407	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1408
		1409	do
1187	{	1410	{
		1411	#ifndef _WIN32
		1412	if (expect_false (curpid)) /* penalise the forking check even more */
		1413	if (expect_false (getpid () != curpid))
		1414	{
		1415	curpid = getpid ();
		1416	postfork = 1;
		1417	}
		1418	#endif
		1419
		1420	#if EV_FORK_ENABLE
		1421	/* we might have forked, so queue fork handlers */
		1422	if (expect_false (postfork))
		1423	if (forkcnt)
		1424	{
		1425	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1426	call_pending (EV_A);
		1427	}
		1428	#endif
		1429
1188	/* queue check watchers (and execute them) */	1430	/* queue prepare watchers (and execute them) */
1189	if (expect_false (preparecnt))	1431	if (expect_false (preparecnt))
1190	{	1432	{
1191	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1433	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1192	call_pending (EV_A);	1434	call_pending (EV_A);
1193	}	1435	}
1194		1436
		1437	if (expect_false (!activecnt))
		1438	break;
		1439
1195	/* we might have forked, so reify kernel state if necessary */	1440	/* we might have forked, so reify kernel state if necessary */
1196	if (expect_false (postfork))	1441	if (expect_false (postfork))
1197	loop_fork (EV_A);	1442	loop_fork (EV_A);
1198		1443
1199	/* update fd-related kernel structures */	1444	/* update fd-related kernel structures */
1200	fd_reify (EV_A);	1445	fd_reify (EV_A);
1201		1446
1202	/* calculate blocking time */	1447	/* calculate blocking time */
		1448	{
		1449	ev_tstamp block;
1203		1450
1204	/* we only need this for !monotonic clock or timers, but as we basically	1451	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1205	always have timers, we just calculate it always */	1452	block = 0.; /* do not block at all */
1206	#if EV_USE_MONOTONIC
1207	if (expect_true (have_monotonic))
1208	time_update_monotonic (EV_A);
1209	else	1453	else
1210	#endif
1211	{	1454	{
1212	ev_rt_now = ev_time ();	1455	/* update time to cancel out callback processing overhead */
1213	mn_now = ev_rt_now;	1456	time_update (EV_A_ 1e100);
1214	}
1215		1457
1216	if (flags & EVLOOP_NONBLOCK || idlecnt)
1217	block = 0.;
1218	else
1219	{
1220	block = MAX_BLOCKTIME;	1458	block = MAX_BLOCKTIME;
1221		1459
1222	if (timercnt)	1460	if (timercnt)
1223	{	1461	{
1224	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1462	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1225	if (block > to) block = to;	1463	if (block > to) block = to;
1226	}	1464	}
1227		1465
1228	#if EV_PERIODICS	1466	#if EV_PERIODIC_ENABLE
1229	if (periodiccnt)	1467	if (periodiccnt)
1230	{	1468	{
1231	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1469	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1232	if (block > to) block = to;	1470	if (block > to) block = to;
1233	}	1471	}
1234	#endif	1472	#endif
1235		1473
1236	if (block < 0.) block = 0.;	1474	if (expect_false (block < 0.)) block = 0.;
1237	}	1475	}
1238		1476
		1477	++loop_count;
1239	method_poll (EV_A_ block);	1478	backend_poll (EV_A_ block);
1240		1479
1241	/* update ev_rt_now, do magic */	1480	/* update ev_rt_now, do magic */
1242	time_update (EV_A);	1481	time_update (EV_A_ block);
		1482	}
1243		1483
1244	/* queue pending timers and reschedule them */	1484	/* queue pending timers and reschedule them */
1245	timers_reify (EV_A); /* relative timers called last */	1485	timers_reify (EV_A); /* relative timers called last */
1246	#if EV_PERIODICS	1486	#if EV_PERIODIC_ENABLE
1247	periodics_reify (EV_A); /* absolute timers called first */	1487	periodics_reify (EV_A); /* absolute timers called first */
1248	#endif	1488	#endif
1249		1489
		1490	#if EV_IDLE_ENABLE
1250	/* queue idle watchers unless io or timers are pending */	1491	/* queue idle watchers unless other events are pending */
1251	if (idlecnt && !any_pending (EV_A))	1492	idle_reify (EV_A);
1252	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1493	#endif
1253		1494
1254	/* queue check watchers, to be executed first */	1495	/* queue check watchers, to be executed first */
1255	if (checkcnt)	1496	if (expect_false (checkcnt))
1256	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1497	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1257		1498
1258	call_pending (EV_A);	1499	call_pending (EV_A);
1259		1500
1260	if (loop_done)
1261	break;
1262	}	1501	}
		1502	while (expect_true (activecnt && !loop_done));
1263		1503
1264	if (loop_done != 2)	1504	if (loop_done == EVUNLOOP_ONE)
1265	loop_done = 0;	1505	loop_done = EVUNLOOP_CANCEL;
1266	}	1506	}
1267		1507
1268	void	1508	void
1269	ev_unloop (EV_P_ int how)	1509	ev_unloop (EV_P_ int how)
1270	{	1510	{
1271	loop_done = how;	1511	loop_done = how;
1272	}	1512	}
1273		1513
1274	/*****************************************************************************/	1514	/*****************************************************************************/
1275		1515
1276	inline void	1516	void inline_size
1277	wlist_add (WL *head, WL elem)	1517	wlist_add (WL *head, WL elem)
1278	{	1518	{
1279	elem->next = *head;	1519	elem->next = *head;
1280	*head = elem;	1520	*head = elem;
1281	}	1521	}
1282		1522
1283	inline void	1523	void inline_size
1284	wlist_del (WL *head, WL elem)	1524	wlist_del (WL *head, WL elem)
1285	{	1525	{
1286	while (*head)	1526	while (*head)
1287	{	1527	{
1288	if (*head == elem)	1528	if (*head == elem)
…		…
1293		1533
1294	head = &(*head)->next;	1534	head = &(*head)->next;
1295	}	1535	}
1296	}	1536	}
1297		1537
1298	inline void	1538	void inline_speed
1299	ev_clear_pending (EV_P_ W w)	1539	clear_pending (EV_P_ W w)
1300	{	1540	{
1301	if (w->pending)	1541	if (w->pending)
1302	{	1542	{
1303	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1543	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1304	w->pending = 0;	1544	w->pending = 0;
1305	}	1545	}
1306	}	1546	}
1307		1547
1308	inline void	1548	int
		1549	ev_clear_pending (EV_P_ void *w)
		1550	{
		1551	W w_ = (W)w;
		1552	int pending = w_->pending;
		1553
		1554	if (expect_true (pending))
		1555	{
		1556	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1557	w_->pending = 0;
		1558	p->w = 0;
		1559	return p->events;
		1560	}
		1561	else
		1562	return 0;
		1563	}
		1564
		1565	void inline_size
		1566	pri_adjust (EV_P_ W w)
		1567	{
		1568	int pri = w->priority;
		1569	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1570	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1571	w->priority = pri;
		1572	}
		1573
		1574	void inline_speed
1309	ev_start (EV_P_ W w, int active)	1575	ev_start (EV_P_ W w, int active)
1310	{	1576	{
1311	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1577	pri_adjust (EV_A_ w);
1312	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1313
1314	w->active = active;	1578	w->active = active;
1315	ev_ref (EV_A);	1579	ev_ref (EV_A);
1316	}	1580	}
1317		1581
1318	inline void	1582	void inline_size
1319	ev_stop (EV_P_ W w)	1583	ev_stop (EV_P_ W w)
1320	{	1584	{
1321	ev_unref (EV_A);	1585	ev_unref (EV_A);
1322	w->active = 0;	1586	w->active = 0;
1323	}	1587	}
1324		1588
1325	/*****************************************************************************/	1589	/*****************************************************************************/
1326		1590
1327	void	1591	void noinline
1328	ev_io_start (EV_P_ struct ev_io *w)	1592	ev_io_start (EV_P_ ev_io *w)
1329	{	1593	{
1330	int fd = w->fd;	1594	int fd = w->fd;
1331		1595
1332	if (ev_is_active (w))	1596	if (expect_false (ev_is_active (w)))
1333	return;	1597	return;
1334		1598
1335	assert (("ev_io_start called with negative fd", fd >= 0));	1599	assert (("ev_io_start called with negative fd", fd >= 0));
1336		1600
1337	ev_start (EV_A_ (W)w, 1);	1601	ev_start (EV_A_ (W)w, 1);
…		…
1339	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1603	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1340		1604
1341	fd_change (EV_A_ fd);	1605	fd_change (EV_A_ fd);
1342	}	1606	}
1343		1607
1344	void	1608	void noinline
1345	ev_io_stop (EV_P_ struct ev_io *w)	1609	ev_io_stop (EV_P_ ev_io *w)
1346	{	1610	{
1347	ev_clear_pending (EV_A_ (W)w);	1611	clear_pending (EV_A_ (W)w);
1348	if (!ev_is_active (w))	1612	if (expect_false (!ev_is_active (w)))
1349	return;	1613	return;
1350		1614
1351	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1615	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1352		1616
1353	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1617	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1354	ev_stop (EV_A_ (W)w);	1618	ev_stop (EV_A_ (W)w);
1355		1619
1356	fd_change (EV_A_ w->fd);	1620	fd_change (EV_A_ w->fd);
1357	}	1621	}
1358		1622
1359	void	1623	void noinline
1360	ev_timer_start (EV_P_ struct ev_timer *w)	1624	ev_timer_start (EV_P_ ev_timer *w)
1361	{	1625	{
1362	if (ev_is_active (w))	1626	if (expect_false (ev_is_active (w)))
1363	return;	1627	return;
1364		1628
1365	((WT)w)->at += mn_now;	1629	((WT)w)->at += mn_now;
1366		1630
1367	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1631	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1368		1632
1369	ev_start (EV_A_ (W)w, ++timercnt);	1633	ev_start (EV_A_ (W)w, ++timercnt);
1370	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);	1634	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1371	timers [timercnt - 1] = w;	1635	timers [timercnt - 1] = w;
1372	upheap ((WT *)timers, timercnt - 1);	1636	upheap ((WT *)timers, timercnt - 1);
1373		1637
		1638	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1639	}
		1640
		1641	void noinline
		1642	ev_timer_stop (EV_P_ ev_timer *w)
		1643	{
		1644	clear_pending (EV_A_ (W)w);
		1645	if (expect_false (!ev_is_active (w)))
		1646	return;
		1647
1374	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1648	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1375	}
1376		1649
1377	void	1650	{
1378	ev_timer_stop (EV_P_ struct ev_timer *w)	1651	int active = ((W)w)->active;
1379	{
1380	ev_clear_pending (EV_A_ (W)w);
1381	if (!ev_is_active (w))
1382	return;
1383		1652
1384	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1653	if (expect_true (--active < --timercnt))
1385
1386	if (((W)w)->active < timercnt--)
1387	{	1654	{
1388	timers [((W)w)->active - 1] = timers [timercnt];	1655	timers [active] = timers [timercnt];
1389	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1656	adjustheap ((WT *)timers, timercnt, active);
1390	}	1657	}
		1658	}
1391		1659
1392	((WT)w)->at -= mn_now;	1660	((WT)w)->at -= mn_now;
1393		1661
1394	ev_stop (EV_A_ (W)w);	1662	ev_stop (EV_A_ (W)w);
1395	}	1663	}
1396		1664
1397	void	1665	void noinline
1398	ev_timer_again (EV_P_ struct ev_timer *w)	1666	ev_timer_again (EV_P_ ev_timer *w)
1399	{	1667	{
1400	if (ev_is_active (w))	1668	if (ev_is_active (w))
1401	{	1669	{
1402	if (w->repeat)	1670	if (w->repeat)
1403	{	1671	{
…		…
1412	w->at = w->repeat;	1680	w->at = w->repeat;
1413	ev_timer_start (EV_A_ w);	1681	ev_timer_start (EV_A_ w);
1414	}	1682	}
1415	}	1683	}
1416		1684
1417	#if EV_PERIODICS	1685	#if EV_PERIODIC_ENABLE
1418	void	1686	void noinline
1419	ev_periodic_start (EV_P_ struct ev_periodic *w)	1687	ev_periodic_start (EV_P_ ev_periodic *w)
1420	{	1688	{
1421	if (ev_is_active (w))	1689	if (expect_false (ev_is_active (w)))
1422	return;	1690	return;
1423		1691
1424	if (w->reschedule_cb)	1692	if (w->reschedule_cb)
1425	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1693	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1426	else if (w->interval)	1694	else if (w->interval)
1427	{	1695	{
1428	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1696	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1429	/* this formula differs from the one in periodic_reify because we do not always round up */	1697	/* this formula differs from the one in periodic_reify because we do not always round up */
1430	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1698	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1431	}	1699	}
		1700	else
		1701	((WT)w)->at = w->offset;
1432		1702
1433	ev_start (EV_A_ (W)w, ++periodiccnt);	1703	ev_start (EV_A_ (W)w, ++periodiccnt);
1434	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1704	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1435	periodics [periodiccnt - 1] = w;	1705	periodics [periodiccnt - 1] = w;
1436	upheap ((WT *)periodics, periodiccnt - 1);	1706	upheap ((WT *)periodics, periodiccnt - 1);
1437		1707
		1708	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1709	}
		1710
		1711	void noinline
		1712	ev_periodic_stop (EV_P_ ev_periodic *w)
		1713	{
		1714	clear_pending (EV_A_ (W)w);
		1715	if (expect_false (!ev_is_active (w)))
		1716	return;
		1717
1438	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1718	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1439	}
1440		1719
1441	void	1720	{
1442	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1721	int active = ((W)w)->active;
1443	{
1444	ev_clear_pending (EV_A_ (W)w);
1445	if (!ev_is_active (w))
1446	return;
1447		1722
1448	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1723	if (expect_true (--active < --periodiccnt))
1449
1450	if (((W)w)->active < periodiccnt--)
1451	{	1724	{
1452	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1725	periodics [active] = periodics [periodiccnt];
1453	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1726	adjustheap ((WT *)periodics, periodiccnt, active);
1454	}	1727	}
		1728	}
1455		1729
1456	ev_stop (EV_A_ (W)w);	1730	ev_stop (EV_A_ (W)w);
1457	}	1731	}
1458		1732
1459	void	1733	void noinline
1460	ev_periodic_again (EV_P_ struct ev_periodic *w)	1734	ev_periodic_again (EV_P_ ev_periodic *w)
1461	{	1735	{
1462	/* TODO: use adjustheap and recalculation */	1736	/* TODO: use adjustheap and recalculation */
1463	ev_periodic_stop (EV_A_ w);	1737	ev_periodic_stop (EV_A_ w);
1464	ev_periodic_start (EV_A_ w);	1738	ev_periodic_start (EV_A_ w);
1465	}	1739	}
1466	#endif	1740	#endif
1467		1741
1468	void
1469	ev_idle_start (EV_P_ struct ev_idle *w)
1470	{
1471	if (ev_is_active (w))
1472	return;
1473
1474	ev_start (EV_A_ (W)w, ++idlecnt);
1475	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1476	idles [idlecnt - 1] = w;
1477	}
1478
1479	void
1480	ev_idle_stop (EV_P_ struct ev_idle *w)
1481	{
1482	ev_clear_pending (EV_A_ (W)w);
1483	if (!ev_is_active (w))
1484	return;
1485
1486	idles [((W)w)->active - 1] = idles [--idlecnt];
1487	ev_stop (EV_A_ (W)w);
1488	}
1489
1490	void
1491	ev_prepare_start (EV_P_ struct ev_prepare *w)
1492	{
1493	if (ev_is_active (w))
1494	return;
1495
1496	ev_start (EV_A_ (W)w, ++preparecnt);
1497	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1498	prepares [preparecnt - 1] = w;
1499	}
1500
1501	void
1502	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1503	{
1504	ev_clear_pending (EV_A_ (W)w);
1505	if (!ev_is_active (w))
1506	return;
1507
1508	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1509	ev_stop (EV_A_ (W)w);
1510	}
1511
1512	void
1513	ev_check_start (EV_P_ struct ev_check *w)
1514	{
1515	if (ev_is_active (w))
1516	return;
1517
1518	ev_start (EV_A_ (W)w, ++checkcnt);
1519	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1520	checks [checkcnt - 1] = w;
1521	}
1522
1523	void
1524	ev_check_stop (EV_P_ struct ev_check *w)
1525	{
1526	ev_clear_pending (EV_A_ (W)w);
1527	if (!ev_is_active (w))
1528	return;
1529
1530	checks [((W)w)->active - 1] = checks [--checkcnt];
1531	ev_stop (EV_A_ (W)w);
1532	}
1533
1534	#ifndef SA_RESTART	1742	#ifndef SA_RESTART
1535	# define SA_RESTART 0	1743	# define SA_RESTART 0
1536	#endif	1744	#endif
1537		1745
1538	void	1746	void noinline
1539	ev_signal_start (EV_P_ struct ev_signal *w)	1747	ev_signal_start (EV_P_ ev_signal *w)
1540	{	1748	{
1541	#if EV_MULTIPLICITY	1749	#if EV_MULTIPLICITY
1542	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1750	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1543	#endif	1751	#endif
1544	if (ev_is_active (w))	1752	if (expect_false (ev_is_active (w)))
1545	return;	1753	return;
1546		1754
1547	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1755	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1548		1756
		1757	{
		1758	#ifndef _WIN32
		1759	sigset_t full, prev;
		1760	sigfillset (&full);
		1761	sigprocmask (SIG_SETMASK, &full, &prev);
		1762	#endif
		1763
		1764	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1765
		1766	#ifndef _WIN32
		1767	sigprocmask (SIG_SETMASK, &prev, 0);
		1768	#endif
		1769	}
		1770
1549	ev_start (EV_A_ (W)w, 1);	1771	ev_start (EV_A_ (W)w, 1);
1550	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1551	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1772	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1552		1773
1553	if (!((WL)w)->next)	1774	if (!((WL)w)->next)
1554	{	1775	{
1555	#if _WIN32	1776	#if _WIN32
…		…
1562	sigaction (w->signum, &sa, 0);	1783	sigaction (w->signum, &sa, 0);
1563	#endif	1784	#endif
1564	}	1785	}
1565	}	1786	}
1566		1787
1567	void	1788	void noinline
1568	ev_signal_stop (EV_P_ struct ev_signal *w)	1789	ev_signal_stop (EV_P_ ev_signal *w)
1569	{	1790	{
1570	ev_clear_pending (EV_A_ (W)w);	1791	clear_pending (EV_A_ (W)w);
1571	if (!ev_is_active (w))	1792	if (expect_false (!ev_is_active (w)))
1572	return;	1793	return;
1573		1794
1574	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1795	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1575	ev_stop (EV_A_ (W)w);	1796	ev_stop (EV_A_ (W)w);
1576		1797
1577	if (!signals [w->signum - 1].head)	1798	if (!signals [w->signum - 1].head)
1578	signal (w->signum, SIG_DFL);	1799	signal (w->signum, SIG_DFL);
1579	}	1800	}
1580		1801
1581	void	1802	void
1582	ev_child_start (EV_P_ struct ev_child *w)	1803	ev_child_start (EV_P_ ev_child *w)
1583	{	1804	{
1584	#if EV_MULTIPLICITY	1805	#if EV_MULTIPLICITY
1585	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1806	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1586	#endif	1807	#endif
1587	if (ev_is_active (w))	1808	if (expect_false (ev_is_active (w)))
1588	return;	1809	return;
1589		1810
1590	ev_start (EV_A_ (W)w, 1);	1811	ev_start (EV_A_ (W)w, 1);
1591	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1812	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1592	}	1813	}
1593		1814
1594	void	1815	void
1595	ev_child_stop (EV_P_ struct ev_child *w)	1816	ev_child_stop (EV_P_ ev_child *w)
1596	{	1817	{
1597	ev_clear_pending (EV_A_ (W)w);	1818	clear_pending (EV_A_ (W)w);
1598	if (!ev_is_active (w))	1819	if (expect_false (!ev_is_active (w)))
1599	return;	1820	return;
1600		1821
1601	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1822	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1602	ev_stop (EV_A_ (W)w);	1823	ev_stop (EV_A_ (W)w);
1603	}	1824	}
1604		1825
		1826	#if EV_STAT_ENABLE
		1827
		1828	# ifdef _WIN32
		1829	# undef lstat
		1830	# define lstat(a,b) _stati64 (a,b)
		1831	# endif
		1832
		1833	#define DEF_STAT_INTERVAL 5.0074891
		1834	#define MIN_STAT_INTERVAL 0.1074891
		1835
		1836	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1837
		1838	#if EV_USE_INOTIFY
		1839	# define EV_INOTIFY_BUFSIZE 8192
		1840
		1841	static void noinline
		1842	infy_add (EV_P_ ev_stat *w)
		1843	{
		1844	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);
		1845
		1846	if (w->wd < 0)
		1847	{
		1848	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1849
		1850	/* monitor some parent directory for speedup hints */
		1851	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1852	{
		1853	char path [4096];
		1854	strcpy (path, w->path);
		1855
		1856	do
		1857	{
		1858	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1859	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1860
		1861	char *pend = strrchr (path, '/');
		1862
		1863	if (!pend)
		1864	break; /* whoops, no '/', complain to your admin */
		1865
		1866	*pend = 0;
		1867	w->wd = inotify_add_watch (fs_fd, path, mask);
		1868	}
		1869	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1870	}
		1871	}
		1872	else
		1873	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1874
		1875	if (w->wd >= 0)
		1876	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1877	}
		1878
		1879	static void noinline
		1880	infy_del (EV_P_ ev_stat *w)
		1881	{
		1882	int slot;
		1883	int wd = w->wd;
		1884
		1885	if (wd < 0)
		1886	return;
		1887
		1888	w->wd = -2;
		1889	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1890	wlist_del (&fs_hash [slot].head, (WL)w);
		1891
		1892	/* remove this watcher, if others are watching it, they will rearm */
		1893	inotify_rm_watch (fs_fd, wd);
		1894	}
		1895
		1896	static void noinline
		1897	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1898	{
		1899	if (slot < 0)
		1900	/* overflow, need to check for all hahs slots */
		1901	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1902	infy_wd (EV_A_ slot, wd, ev);
		1903	else
		1904	{
		1905	WL w_;
		1906
		1907	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1908	{
		1909	ev_stat *w = (ev_stat *)w_;
		1910	w_ = w_->next; /* lets us remove this watcher and all before it */
		1911
		1912	if (w->wd == wd || wd == -1)
		1913	{
		1914	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1915	{
		1916	w->wd = -1;
		1917	infy_add (EV_A_ w); /* re-add, no matter what */
		1918	}
		1919
		1920	stat_timer_cb (EV_A_ &w->timer, 0);
		1921	}
		1922	}
		1923	}
		1924	}
		1925
		1926	static void
		1927	infy_cb (EV_P_ ev_io *w, int revents)
		1928	{
		1929	char buf [EV_INOTIFY_BUFSIZE];
		1930	struct inotify_event *ev = (struct inotify_event *)buf;
		1931	int ofs;
		1932	int len = read (fs_fd, buf, sizeof (buf));
		1933
		1934	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1935	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1936	}
		1937
		1938	void inline_size
		1939	infy_init (EV_P)
		1940	{
		1941	if (fs_fd != -2)
		1942	return;
		1943
		1944	fs_fd = inotify_init ();
		1945
		1946	if (fs_fd >= 0)
		1947	{
		1948	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1949	ev_set_priority (&fs_w, EV_MAXPRI);
		1950	ev_io_start (EV_A_ &fs_w);
		1951	}
		1952	}
		1953
		1954	void inline_size
		1955	infy_fork (EV_P)
		1956	{
		1957	int slot;
		1958
		1959	if (fs_fd < 0)
		1960	return;
		1961
		1962	close (fs_fd);
		1963	fs_fd = inotify_init ();
		1964
		1965	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1966	{
		1967	WL w_ = fs_hash [slot].head;
		1968	fs_hash [slot].head = 0;
		1969
		1970	while (w_)
		1971	{
		1972	ev_stat *w = (ev_stat *)w_;
		1973	w_ = w_->next; /* lets us add this watcher */
		1974
		1975	w->wd = -1;
		1976
		1977	if (fs_fd >= 0)
		1978	infy_add (EV_A_ w); /* re-add, no matter what */
		1979	else
		1980	ev_timer_start (EV_A_ &w->timer);
		1981	}
		1982
		1983	}
		1984	}
		1985
		1986	#endif
		1987
		1988	void
		1989	ev_stat_stat (EV_P_ ev_stat *w)
		1990	{
		1991	if (lstat (w->path, &w->attr) < 0)
		1992	w->attr.st_nlink = 0;
		1993	else if (!w->attr.st_nlink)
		1994	w->attr.st_nlink = 1;
		1995	}
		1996
		1997	static void noinline
		1998	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1999	{
		2000	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2001
		2002	/* we copy this here each the time so that */
		2003	/* prev has the old value when the callback gets invoked */
		2004	w->prev = w->attr;
		2005	ev_stat_stat (EV_A_ w);
		2006
		2007	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2008	if (
		2009	w->prev.st_dev != w->attr.st_dev
		2010	|| w->prev.st_ino != w->attr.st_ino
		2011	|| w->prev.st_mode != w->attr.st_mode
		2012	|| w->prev.st_nlink != w->attr.st_nlink
		2013	|| w->prev.st_uid != w->attr.st_uid
		2014	|| w->prev.st_gid != w->attr.st_gid
		2015	|| w->prev.st_rdev != w->attr.st_rdev
		2016	|| w->prev.st_size != w->attr.st_size
		2017	|| w->prev.st_atime != w->attr.st_atime
		2018	|| w->prev.st_mtime != w->attr.st_mtime
		2019	|| w->prev.st_ctime != w->attr.st_ctime
		2020	) {
		2021	#if EV_USE_INOTIFY
		2022	infy_del (EV_A_ w);
		2023	infy_add (EV_A_ w);
		2024	ev_stat_stat (EV_A_ w); /* avoid race... */
		2025	#endif
		2026
		2027	ev_feed_event (EV_A_ w, EV_STAT);
		2028	}
		2029	}
		2030
		2031	void
		2032	ev_stat_start (EV_P_ ev_stat *w)
		2033	{
		2034	if (expect_false (ev_is_active (w)))
		2035	return;
		2036
		2037	/* since we use memcmp, we need to clear any padding data etc. */
		2038	memset (&w->prev, 0, sizeof (ev_statdata));
		2039	memset (&w->attr, 0, sizeof (ev_statdata));
		2040
		2041	ev_stat_stat (EV_A_ w);
		2042
		2043	if (w->interval < MIN_STAT_INTERVAL)
		2044	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2045
		2046	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2047	ev_set_priority (&w->timer, ev_priority (w));
		2048
		2049	#if EV_USE_INOTIFY
		2050	infy_init (EV_A);
		2051
		2052	if (fs_fd >= 0)
		2053	infy_add (EV_A_ w);
		2054	else
		2055	#endif
		2056	ev_timer_start (EV_A_ &w->timer);
		2057
		2058	ev_start (EV_A_ (W)w, 1);
		2059	}
		2060
		2061	void
		2062	ev_stat_stop (EV_P_ ev_stat *w)
		2063	{
		2064	clear_pending (EV_A_ (W)w);
		2065	if (expect_false (!ev_is_active (w)))
		2066	return;
		2067
		2068	#if EV_USE_INOTIFY
		2069	infy_del (EV_A_ w);
		2070	#endif
		2071	ev_timer_stop (EV_A_ &w->timer);
		2072
		2073	ev_stop (EV_A_ (W)w);
		2074	}
		2075	#endif
		2076
		2077	#if EV_IDLE_ENABLE
		2078	void
		2079	ev_idle_start (EV_P_ ev_idle *w)
		2080	{
		2081	if (expect_false (ev_is_active (w)))
		2082	return;
		2083
		2084	pri_adjust (EV_A_ (W)w);
		2085
		2086	{
		2087	int active = ++idlecnt [ABSPRI (w)];
		2088
		2089	++idleall;
		2090	ev_start (EV_A_ (W)w, active);
		2091
		2092	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2093	idles [ABSPRI (w)][active - 1] = w;
		2094	}
		2095	}
		2096
		2097	void
		2098	ev_idle_stop (EV_P_ ev_idle *w)
		2099	{
		2100	clear_pending (EV_A_ (W)w);
		2101	if (expect_false (!ev_is_active (w)))
		2102	return;
		2103
		2104	{
		2105	int active = ((W)w)->active;
		2106
		2107	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2108	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2109
		2110	ev_stop (EV_A_ (W)w);
		2111	--idleall;
		2112	}
		2113	}
		2114	#endif
		2115
		2116	void
		2117	ev_prepare_start (EV_P_ ev_prepare *w)
		2118	{
		2119	if (expect_false (ev_is_active (w)))
		2120	return;
		2121
		2122	ev_start (EV_A_ (W)w, ++preparecnt);
		2123	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2124	prepares [preparecnt - 1] = w;
		2125	}
		2126
		2127	void
		2128	ev_prepare_stop (EV_P_ ev_prepare *w)
		2129	{
		2130	clear_pending (EV_A_ (W)w);
		2131	if (expect_false (!ev_is_active (w)))
		2132	return;
		2133
		2134	{
		2135	int active = ((W)w)->active;
		2136	prepares [active - 1] = prepares [--preparecnt];
		2137	((W)prepares [active - 1])->active = active;
		2138	}
		2139
		2140	ev_stop (EV_A_ (W)w);
		2141	}
		2142
		2143	void
		2144	ev_check_start (EV_P_ ev_check *w)
		2145	{
		2146	if (expect_false (ev_is_active (w)))
		2147	return;
		2148
		2149	ev_start (EV_A_ (W)w, ++checkcnt);
		2150	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2151	checks [checkcnt - 1] = w;
		2152	}
		2153
		2154	void
		2155	ev_check_stop (EV_P_ ev_check *w)
		2156	{
		2157	clear_pending (EV_A_ (W)w);
		2158	if (expect_false (!ev_is_active (w)))
		2159	return;
		2160
		2161	{
		2162	int active = ((W)w)->active;
		2163	checks [active - 1] = checks [--checkcnt];
		2164	((W)checks [active - 1])->active = active;
		2165	}
		2166
		2167	ev_stop (EV_A_ (W)w);
		2168	}
		2169
		2170	#if EV_EMBED_ENABLE
		2171	void noinline
		2172	ev_embed_sweep (EV_P_ ev_embed *w)
		2173	{
		2174	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2175	}
		2176
		2177	static void
		2178	embed_cb (EV_P_ ev_io *io, int revents)
		2179	{
		2180	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2181
		2182	if (ev_cb (w))
		2183	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2184	else
		2185	ev_embed_sweep (loop, w);
		2186	}
		2187
		2188	void
		2189	ev_embed_start (EV_P_ ev_embed *w)
		2190	{
		2191	if (expect_false (ev_is_active (w)))
		2192	return;
		2193
		2194	{
		2195	struct ev_loop *loop = w->loop;
		2196	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2197	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2198	}
		2199
		2200	ev_set_priority (&w->io, ev_priority (w));
		2201	ev_io_start (EV_A_ &w->io);
		2202
		2203	ev_start (EV_A_ (W)w, 1);
		2204	}
		2205
		2206	void
		2207	ev_embed_stop (EV_P_ ev_embed *w)
		2208	{
		2209	clear_pending (EV_A_ (W)w);
		2210	if (expect_false (!ev_is_active (w)))
		2211	return;
		2212
		2213	ev_io_stop (EV_A_ &w->io);
		2214
		2215	ev_stop (EV_A_ (W)w);
		2216	}
		2217	#endif
		2218
		2219	#if EV_FORK_ENABLE
		2220	void
		2221	ev_fork_start (EV_P_ ev_fork *w)
		2222	{
		2223	if (expect_false (ev_is_active (w)))
		2224	return;
		2225
		2226	ev_start (EV_A_ (W)w, ++forkcnt);
		2227	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2228	forks [forkcnt - 1] = w;
		2229	}
		2230
		2231	void
		2232	ev_fork_stop (EV_P_ ev_fork *w)
		2233	{
		2234	clear_pending (EV_A_ (W)w);
		2235	if (expect_false (!ev_is_active (w)))
		2236	return;
		2237
		2238	{
		2239	int active = ((W)w)->active;
		2240	forks [active - 1] = forks [--forkcnt];
		2241	((W)forks [active - 1])->active = active;
		2242	}
		2243
		2244	ev_stop (EV_A_ (W)w);
		2245	}
		2246	#endif
		2247
1605	/*****************************************************************************/	2248	/*****************************************************************************/
1606		2249
1607	struct ev_once	2250	struct ev_once
1608	{	2251	{
1609	struct ev_io io;	2252	ev_io io;
1610	struct ev_timer to;	2253	ev_timer to;
1611	void (*cb)(int revents, void *arg);	2254	void (*cb)(int revents, void *arg);
1612	void *arg;	2255	void *arg;
1613	};	2256	};
1614		2257
1615	static void	2258	static void
…		…
1624		2267
1625	cb (revents, arg);	2268	cb (revents, arg);
1626	}	2269	}
1627		2270
1628	static void	2271	static void
1629	once_cb_io (EV_P_ struct ev_io *w, int revents)	2272	once_cb_io (EV_P_ ev_io *w, int revents)
1630	{	2273	{
1631	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2274	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1632	}	2275	}
1633		2276
1634	static void	2277	static void
1635	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2278	once_cb_to (EV_P_ ev_timer *w, int revents)
1636	{	2279	{
1637	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2280	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1638	}	2281	}
1639		2282
1640	void	2283	void
1641	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2284	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1642	{	2285	{
1643	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	2286	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1644		2287
1645	if (!once)	2288	if (expect_false (!once))
		2289	{
1646	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2290	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1647	else	2291	return;
1648	{	2292	}
		2293
1649	once->cb = cb;	2294	once->cb = cb;
1650	once->arg = arg;	2295	once->arg = arg;
1651		2296
1652	ev_init (&once->io, once_cb_io);	2297	ev_init (&once->io, once_cb_io);
1653	if (fd >= 0)	2298	if (fd >= 0)
1654	{	2299	{
1655	ev_io_set (&once->io, fd, events);	2300	ev_io_set (&once->io, fd, events);
1656	ev_io_start (EV_A_ &once->io);	2301	ev_io_start (EV_A_ &once->io);
1657	}	2302	}
1658		2303
1659	ev_init (&once->to, once_cb_to);	2304	ev_init (&once->to, once_cb_to);
1660	if (timeout >= 0.)	2305	if (timeout >= 0.)
1661	{	2306	{
1662	ev_timer_set (&once->to, timeout, 0.);	2307	ev_timer_set (&once->to, timeout, 0.);
1663	ev_timer_start (EV_A_ &once->to);	2308	ev_timer_start (EV_A_ &once->to);
1664	}
1665	}	2309	}
1666	}	2310	}
1667		2311
1668	#ifdef __cplusplus	2312	#ifdef __cplusplus
1669	}	2313	}

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