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Comparing libev/ev.c (file contents):
Revision 1.125 by root, Sat Nov 17 02:28:43 2007 UTC vs.
Revision 1.178 by root, Tue Dec 11 18:36:11 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
…		…
125		170
126	#ifndef EV_USE_PORT	171	#ifndef EV_USE_PORT
127	# define EV_USE_PORT 0	172	# define EV_USE_PORT 0
128	#endif	173	#endif
129		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
130	/**/	195	/**/
131
132	/* darwin simply cannot be helped */
133	#ifdef __APPLE__
134	# undef EV_USE_POLL
135	# undef EV_USE_KQUEUE
136	#endif
137		196
138	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
139	# undef EV_USE_MONOTONIC	198	# undef EV_USE_MONOTONIC
140	# define EV_USE_MONOTONIC 0	199	# define EV_USE_MONOTONIC 0
141	#endif	200	#endif
…		…
147		206
148	#if EV_SELECT_IS_WINSOCKET	207	#if EV_SELECT_IS_WINSOCKET
149	# include <winsock.h>	208	# include <winsock.h>
150	#endif	209	#endif
151		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
152	/**/	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 */
153		230
154	#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) */
155	#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) */
156	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
157	/*#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 */
158
159	#ifdef EV_H
160	# include EV_H
161	#else
162	# include "ev.h"
163	#endif
164		234
165	#if __GNUC__ >= 3	235	#if __GNUC__ >= 3
166	# define expect(expr,value) __builtin_expect ((expr),(value))	236	# define expect(expr,value) __builtin_expect ((expr),(value))
167	# define inline static inline	237	# define noinline __attribute__ ((noinline))
168	#else	238	#else
169	# define expect(expr,value) (expr)	239	# define expect(expr,value) (expr)
170	# define inline static	240	# define noinline
		241	# if __STDC_VERSION__ < 199901L
		242	# define inline
		243	# endif
171	#endif	244	#endif
172		245
173	#define expect_false(expr) expect ((expr) != 0, 0)	246	#define expect_false(expr) expect ((expr) != 0, 0)
174	#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
175		255
176	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	256	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
177	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	257	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
178		258
179	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	259	#define EMPTY /* required for microsofts broken pseudo-c compiler */
180	#define EMPTY2(a,b) /* used to suppress some warnings */	260	#define EMPTY2(a,b) /* used to suppress some warnings */
181		261
182	typedef struct ev_watcher *W;	262	typedef ev_watcher *W;
183	typedef struct ev_watcher_list *WL;	263	typedef ev_watcher_list *WL;
184	typedef struct ev_watcher_time *WT;	264	typedef ev_watcher_time *WT;
185		265
186	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	266	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
187		267
188	#ifdef _WIN32	268	#ifdef _WIN32
189	# include "ev_win32.c"	269	# include "ev_win32.c"
…		…
191		271
192	/*****************************************************************************/	272	/*****************************************************************************/
193		273
194	static void (*syserr_cb)(const char *msg);	274	static void (*syserr_cb)(const char *msg);
195		275
		276	void
196	void ev_set_syserr_cb (void (*cb)(const char *msg))	277	ev_set_syserr_cb (void (*cb)(const char *msg))
197	{	278	{
198	syserr_cb = cb;	279	syserr_cb = cb;
199	}	280	}
200		281
201	static void	282	static void noinline
202	syserr (const char *msg)	283	syserr (const char *msg)
203	{	284	{
204	if (!msg)	285	if (!msg)
205	msg = "(libev) system error";	286	msg = "(libev) system error";
206		287
…		…
213	}	294	}
214	}	295	}
215		296
216	static void *(*alloc)(void *ptr, long size);	297	static void *(*alloc)(void *ptr, long size);
217		298
		299	void
218	void ev_set_allocator (void *(*cb)(void *ptr, long size))	300	ev_set_allocator (void *(*cb)(void *ptr, long size))
219	{	301	{
220	alloc = cb;	302	alloc = cb;
221	}	303	}
222		304
223	static void *	305	inline_speed void *
224	ev_realloc (void *ptr, long size)	306	ev_realloc (void *ptr, long size)
225	{	307	{
226	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
227		309
228	if (!ptr && size)	310	if (!ptr && size)
…		…
252	typedef struct	334	typedef struct
253	{	335	{
254	W w;	336	W w;
255	int events;	337	int events;
256	} ANPENDING;	338	} ANPENDING;
		339
		340	#if EV_USE_INOTIFY
		341	typedef struct
		342	{
		343	WL head;
		344	} ANFS;
		345	#endif
257		346
258	#if EV_MULTIPLICITY	347	#if EV_MULTIPLICITY
259		348
260	struct ev_loop	349	struct ev_loop
261	{	350	{
…		…
295	gettimeofday (&tv, 0);	384	gettimeofday (&tv, 0);
296	return tv.tv_sec + tv.tv_usec * 1e-6;	385	return tv.tv_sec + tv.tv_usec * 1e-6;
297	#endif	386	#endif
298	}	387	}
299		388
300	inline ev_tstamp	389	ev_tstamp inline_size
301	get_clock (void)	390	get_clock (void)
302	{	391	{
303	#if EV_USE_MONOTONIC	392	#if EV_USE_MONOTONIC
304	if (expect_true (have_monotonic))	393	if (expect_true (have_monotonic))
305	{	394	{
…		…
318	{	407	{
319	return ev_rt_now;	408	return ev_rt_now;
320	}	409	}
321	#endif	410	#endif
322		411
323	#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	}
324		439
325	#define array_needsize(type,base,cur,cnt,init) \	440	#define array_needsize(type,base,cur,cnt,init) \
326	if (expect_false ((cnt) > cur)) \	441	if (expect_false ((cnt) > (cur))) \
327	{ \	442	{ \
328	int newcnt = cur; \	443	int ocur_ = (cur); \
329	do \	444	(base) = (type *)array_realloc \
330	{ \	445	(sizeof (type), (base), &(cur), (cnt)); \
331	newcnt = array_roundsize (type, newcnt << 1); \	446	init ((base) + (ocur_), (cur) - ocur_); \
332	} \
333	while ((cnt) > newcnt); \
334	\
335	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
336	init (base + cur, newcnt - cur); \
337	cur = newcnt; \
338	}	447	}
339		448
		449	#if 0
340	#define array_slim(type,stem) \	450	#define array_slim(type,stem) \
341	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	451	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
342	{ \	452	{ \
343	stem ## max = array_roundsize (stem ## cnt >> 1); \	453	stem ## max = array_roundsize (stem ## cnt >> 1); \
344	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	454	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
345	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	455	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
346	}	456	}
		457	#endif
347		458
348	#define array_free(stem, idx) \	459	#define array_free(stem, idx) \
349	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;
350		461
351	/*****************************************************************************/	462	/*****************************************************************************/
352		463
353	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_size
		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
354	anfds_init (ANFD *base, int count)	493	anfds_init (ANFD *base, int count)
355	{	494	{
356	while (count--)	495	while (count--)
357	{	496	{
358	base->head = 0;	497	base->head = 0;
…		…
361		500
362	++base;	501	++base;
363	}	502	}
364	}	503	}
365		504
366	void	505	void inline_speed
367	ev_feed_event (EV_P_ void *w, int revents)
368	{
369	W w_ = (W)w;
370
371	if (expect_false (w_->pending))
372	{
373	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
374	return;
375	}
376
377	w_->pending = ++pendingcnt [ABSPRI (w_)];
378	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
379	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
380	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
381	}
382
383	static void
384	queue_events (EV_P_ W *events, int eventcnt, int type)
385	{
386	int i;
387
388	for (i = 0; i < eventcnt; ++i)
389	ev_feed_event (EV_A_ events [i], type);
390	}
391
392	inline void
393	fd_event (EV_P_ int fd, int revents)	506	fd_event (EV_P_ int fd, int revents)
394	{	507	{
395	ANFD *anfd = anfds + fd;	508	ANFD *anfd = anfds + fd;
396	struct ev_io *w;	509	ev_io *w;
397		510
398	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)
399	{	512	{
400	int ev = w->events & revents;	513	int ev = w->events & revents;
401		514
402	if (ev)	515	if (ev)
403	ev_feed_event (EV_A_ (W)w, ev);	516	ev_feed_event (EV_A_ (W)w, ev);
…		…
405	}	518	}
406		519
407	void	520	void
408	ev_feed_fd_event (EV_P_ int fd, int revents)	521	ev_feed_fd_event (EV_P_ int fd, int revents)
409	{	522	{
		523	if (fd >= 0 && fd < anfdmax)
410	fd_event (EV_A_ fd, revents);	524	fd_event (EV_A_ fd, revents);
411	}	525	}
412		526
413	/*****************************************************************************/	527	void inline_size
414
415	inline void
416	fd_reify (EV_P)	528	fd_reify (EV_P)
417	{	529	{
418	int i;	530	int i;
419		531
420	for (i = 0; i < fdchangecnt; ++i)	532	for (i = 0; i < fdchangecnt; ++i)
421	{	533	{
422	int fd = fdchanges [i];	534	int fd = fdchanges [i];
423	ANFD *anfd = anfds + fd;	535	ANFD *anfd = anfds + fd;
424	struct ev_io *w;	536	ev_io *w;
425		537
426	int events = 0;	538	int events = 0;
427		539
428	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)
429	events |= w->events;	541	events |= w->events;
430		542
431	#if EV_SELECT_IS_WINSOCKET	543	#if EV_SELECT_IS_WINSOCKET
432	if (events)	544	if (events)
433	{	545	{
…		…
437	}	549	}
438	#endif	550	#endif
439		551
440	anfd->reify = 0;	552	anfd->reify = 0;
441		553
442	method_modify (EV_A_ fd, anfd->events, events);	554	backend_modify (EV_A_ fd, anfd->events, events);
443	anfd->events = events;	555	anfd->events = events;
444	}	556	}
445		557
446	fdchangecnt = 0;	558	fdchangecnt = 0;
447	}	559	}
448		560
449	static void	561	void inline_size
450	fd_change (EV_P_ int fd)	562	fd_change (EV_P_ int fd)
451	{	563	{
452	if (expect_false (anfds [fd].reify))	564	if (expect_false (anfds [fd].reify))
453	return;	565	return;
454		566
…		…
457	++fdchangecnt;	569	++fdchangecnt;
458	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
459	fdchanges [fdchangecnt - 1] = fd;	571	fdchanges [fdchangecnt - 1] = fd;
460	}	572	}
461		573
462	static void	574	void inline_speed
463	fd_kill (EV_P_ int fd)	575	fd_kill (EV_P_ int fd)
464	{	576	{
465	struct ev_io *w;	577	ev_io *w;
466		578
467	while ((w = (struct ev_io *)anfds [fd].head))	579	while ((w = (ev_io *)anfds [fd].head))
468	{	580	{
469	ev_io_stop (EV_A_ w);	581	ev_io_stop (EV_A_ w);
470	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);
471	}	583	}
472	}	584	}
473		585
474	inline int	586	int inline_size
475	fd_valid (int fd)	587	fd_valid (int fd)
476	{	588	{
477	#ifdef _WIN32	589	#ifdef _WIN32
478	return _get_osfhandle (fd) != -1;	590	return _get_osfhandle (fd) != -1;
479	#else	591	#else
480	return fcntl (fd, F_GETFD) != -1;	592	return fcntl (fd, F_GETFD) != -1;
481	#endif	593	#endif
482	}	594	}
483		595
484	/* called on EBADF to verify fds */	596	/* called on EBADF to verify fds */
485	static void	597	static void noinline
486	fd_ebadf (EV_P)	598	fd_ebadf (EV_P)
487	{	599	{
488	int fd;	600	int fd;
489		601
490	for (fd = 0; fd < anfdmax; ++fd)	602	for (fd = 0; fd < anfdmax; ++fd)
…		…
492	if (!fd_valid (fd) == -1 && errno == EBADF)	604	if (!fd_valid (fd) == -1 && errno == EBADF)
493	fd_kill (EV_A_ fd);	605	fd_kill (EV_A_ fd);
494	}	606	}
495		607
496	/* 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 */
497	static void	609	static void noinline
498	fd_enomem (EV_P)	610	fd_enomem (EV_P)
499	{	611	{
500	int fd;	612	int fd;
501		613
502	for (fd = anfdmax; fd--; )	614	for (fd = anfdmax; fd--; )
…		…
505	fd_kill (EV_A_ fd);	617	fd_kill (EV_A_ fd);
506	return;	618	return;
507	}	619	}
508	}	620	}
509		621
510	/* 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 */
511	static void	623	static void noinline
512	fd_rearm_all (EV_P)	624	fd_rearm_all (EV_P)
513	{	625	{
514	int fd;	626	int fd;
515		627
516	/* this should be highly optimised to not do anything but set a flag */
517	for (fd = 0; fd < anfdmax; ++fd)	628	for (fd = 0; fd < anfdmax; ++fd)
518	if (anfds [fd].events)	629	if (anfds [fd].events)
519	{	630	{
520	anfds [fd].events = 0;	631	anfds [fd].events = 0;
521	fd_change (EV_A_ fd);	632	fd_change (EV_A_ fd);
522	}	633	}
523	}	634	}
524		635
525	/*****************************************************************************/	636	/*****************************************************************************/
526		637
527	static void	638	void inline_speed
528	upheap (WT *heap, int k)	639	upheap (WT *heap, int k)
529	{	640	{
530	WT w = heap [k];	641	WT w = heap [k];
531		642
532	while (k && heap [k >> 1]->at > w->at)	643	while (k && heap [k >> 1]->at > w->at)
…		…
539	heap [k] = w;	650	heap [k] = w;
540	((W)heap [k])->active = k + 1;	651	((W)heap [k])->active = k + 1;
541		652
542	}	653	}
543		654
544	static void	655	void inline_speed
545	downheap (WT *heap, int N, int k)	656	downheap (WT *heap, int N, int k)
546	{	657	{
547	WT w = heap [k];	658	WT w = heap [k];
548		659
549	while (k < (N >> 1))	660	while (k < (N >> 1))
…		…
563		674
564	heap [k] = w;	675	heap [k] = w;
565	((W)heap [k])->active = k + 1;	676	((W)heap [k])->active = k + 1;
566	}	677	}
567		678
568	inline void	679	void inline_size
569	adjustheap (WT *heap, int N, int k)	680	adjustheap (WT *heap, int N, int k)
570	{	681	{
571	upheap (heap, k);	682	upheap (heap, k);
572	downheap (heap, N, k);	683	downheap (heap, N, k);
573	}	684	}
…		…
583	static ANSIG *signals;	694	static ANSIG *signals;
584	static int signalmax;	695	static int signalmax;
585		696
586	static int sigpipe [2];	697	static int sigpipe [2];
587	static sig_atomic_t volatile gotsig;	698	static sig_atomic_t volatile gotsig;
588	static struct ev_io sigev;	699	static ev_io sigev;
589		700
590	static void	701	void inline_size
591	signals_init (ANSIG *base, int count)	702	signals_init (ANSIG *base, int count)
592	{	703	{
593	while (count--)	704	while (count--)
594	{	705	{
595	base->head = 0;	706	base->head = 0;
…		…
615	write (sigpipe [1], &signum, 1);	726	write (sigpipe [1], &signum, 1);
616	errno = old_errno;	727	errno = old_errno;
617	}	728	}
618	}	729	}
619		730
620	void	731	void noinline
621	ev_feed_signal_event (EV_P_ int signum)	732	ev_feed_signal_event (EV_P_ int signum)
622	{	733	{
623	WL w;	734	WL w;
624		735
625	#if EV_MULTIPLICITY	736	#if EV_MULTIPLICITY
…		…
636	for (w = signals [signum].head; w; w = w->next)	747	for (w = signals [signum].head; w; w = w->next)
637	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	748	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
638	}	749	}
639		750
640	static void	751	static void
641	sigcb (EV_P_ struct ev_io *iow, int revents)	752	sigcb (EV_P_ ev_io *iow, int revents)
642	{	753	{
643	int signum;	754	int signum;
644		755
645	read (sigpipe [0], &revents, 1);	756	read (sigpipe [0], &revents, 1);
646	gotsig = 0;	757	gotsig = 0;
…		…
648	for (signum = signalmax; signum--; )	759	for (signum = signalmax; signum--; )
649	if (signals [signum].gotsig)	760	if (signals [signum].gotsig)
650	ev_feed_signal_event (EV_A_ signum + 1);	761	ev_feed_signal_event (EV_A_ signum + 1);
651	}	762	}
652		763
653	static void	764	void inline_speed
654	fd_intern (int fd)	765	fd_intern (int fd)
655	{	766	{
656	#ifdef _WIN32	767	#ifdef _WIN32
657	int arg = 1;	768	int arg = 1;
658	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	769	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
660	fcntl (fd, F_SETFD, FD_CLOEXEC);	771	fcntl (fd, F_SETFD, FD_CLOEXEC);
661	fcntl (fd, F_SETFL, O_NONBLOCK);	772	fcntl (fd, F_SETFL, O_NONBLOCK);
662	#endif	773	#endif
663	}	774	}
664		775
665	static void	776	static void noinline
666	siginit (EV_P)	777	siginit (EV_P)
667	{	778	{
668	fd_intern (sigpipe [0]);	779	fd_intern (sigpipe [0]);
669	fd_intern (sigpipe [1]);	780	fd_intern (sigpipe [1]);
670		781
…		…
673	ev_unref (EV_A); /* child watcher should not keep loop alive */	784	ev_unref (EV_A); /* child watcher should not keep loop alive */
674	}	785	}
675		786
676	/*****************************************************************************/	787	/*****************************************************************************/
677		788
678	static struct ev_child *childs [PID_HASHSIZE];	789	static ev_child *childs [EV_PID_HASHSIZE];
679		790
680	#ifndef _WIN32	791	#ifndef _WIN32
681		792
682	static struct ev_signal childev;	793	static ev_signal childev;
		794
		795	void inline_speed
		796	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		797	{
		798	ev_child *w;
		799
		800	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		801	if (w->pid == pid || !w->pid)
		802	{
		803	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		804	w->rpid = pid;
		805	w->rstatus = status;
		806	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		807	}
		808	}
683		809
684	#ifndef WCONTINUED	810	#ifndef WCONTINUED
685	# define WCONTINUED 0	811	# define WCONTINUED 0
686	#endif	812	#endif
687		813
688	static void	814	static void
689	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
690	{
691	struct ev_child *w;
692
693	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
694	if (w->pid == pid || !w->pid)
695	{
696	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
697	w->rpid = pid;
698	w->rstatus = status;
699	ev_feed_event (EV_A_ (W)w, EV_CHILD);
700	}
701	}
702
703	static void
704	childcb (EV_P_ struct ev_signal *sw, int revents)	815	childcb (EV_P_ ev_signal *sw, int revents)
705	{	816	{
706	int pid, status;	817	int pid, status;
707		818
		819	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
708	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	820	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
709	{	821	if (!WCONTINUED
		822	|| errno != EINVAL
		823	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		824	return;
		825
710	/* make sure we are called again until all childs have been reaped */	826	/* make sure we are called again until all childs have been reaped */
		827	/* we need to do it this way so that the callback gets called before we continue */
711	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	828	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
712		829
713	child_reap (EV_A_ sw, pid, pid, status);	830	child_reap (EV_A_ sw, pid, pid, status);
		831	if (EV_PID_HASHSIZE > 1)
714	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	832	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
715	}
716	}	833	}
717		834
718	#endif	835	#endif
719		836
720	/*****************************************************************************/	837	/*****************************************************************************/
…		…
746	{	863	{
747	return EV_VERSION_MINOR;	864	return EV_VERSION_MINOR;
748	}	865	}
749		866
750	/* return true if we are running with elevated privileges and should ignore env variables */	867	/* return true if we are running with elevated privileges and should ignore env variables */
751	static int	868	int inline_size
752	enable_secure (void)	869	enable_secure (void)
753	{	870	{
754	#ifdef _WIN32	871	#ifdef _WIN32
755	return 0;	872	return 0;
756	#else	873	#else
…		…
758	|| getgid () != getegid ();	875	|| getgid () != getegid ();
759	#endif	876	#endif
760	}	877	}
761		878
762	unsigned int	879	unsigned int
763	ev_method (EV_P)	880	ev_supported_backends (void)
764	{	881	{
765	return method;	882	unsigned int flags = 0;
766	}
767		883
768	static void	884	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		885	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		886	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		887	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		888	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		889
		890	return flags;
		891	}
		892
		893	unsigned int
		894	ev_recommended_backends (void)
		895	{
		896	unsigned int flags = ev_supported_backends ();
		897
		898	#ifndef __NetBSD__
		899	/* kqueue is borked on everything but netbsd apparently */
		900	/* it usually doesn't work correctly on anything but sockets and pipes */
		901	flags &= ~EVBACKEND_KQUEUE;
		902	#endif
		903	#ifdef __APPLE__
		904	// flags &= ~EVBACKEND_KQUEUE; for documentation
		905	flags &= ~EVBACKEND_POLL;
		906	#endif
		907
		908	return flags;
		909	}
		910
		911	unsigned int
		912	ev_embeddable_backends (void)
		913	{
		914	return EVBACKEND_EPOLL
		915	| EVBACKEND_KQUEUE
		916	| EVBACKEND_PORT;
		917	}
		918
		919	unsigned int
		920	ev_backend (EV_P)
		921	{
		922	return backend;
		923	}
		924
		925	unsigned int
		926	ev_loop_count (EV_P)
		927	{
		928	return loop_count;
		929	}
		930
		931	static void noinline
769	loop_init (EV_P_ unsigned int flags)	932	loop_init (EV_P_ unsigned int flags)
770	{	933	{
771	if (!method)	934	if (!backend)
772	{	935	{
773	#if EV_USE_MONOTONIC	936	#if EV_USE_MONOTONIC
774	{	937	{
775	struct timespec ts;	938	struct timespec ts;
776	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	939	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
781	ev_rt_now = ev_time ();	944	ev_rt_now = ev_time ();
782	mn_now = get_clock ();	945	mn_now = get_clock ();
783	now_floor = mn_now;	946	now_floor = mn_now;
784	rtmn_diff = ev_rt_now - mn_now;	947	rtmn_diff = ev_rt_now - mn_now;
785		948
786	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))	949	/* pid check not overridable via env */
		950	#ifndef _WIN32
		951	if (flags & EVFLAG_FORKCHECK)
		952	curpid = getpid ();
		953	#endif
		954
		955	if (!(flags & EVFLAG_NOENV)
		956	&& !enable_secure ()
		957	&& getenv ("LIBEV_FLAGS"))
787	flags = atoi (getenv ("LIBEV_FLAGS"));	958	flags = atoi (getenv ("LIBEV_FLAGS"));
788		959
789	if (!(flags & 0x0000ffff))	960	if (!(flags & 0x0000ffffUL))
790	flags |= 0x0000ffff;	961	flags |= ev_recommended_backends ();
791		962
792	method = 0;	963	backend = 0;
		964	backend_fd = -1;
		965	#if EV_USE_INOTIFY
		966	fs_fd = -2;
		967	#endif
		968
793	#if EV_USE_PORT	969	#if EV_USE_PORT
794	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);	970	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
795	#endif	971	#endif
796	#if EV_USE_KQUEUE	972	#if EV_USE_KQUEUE
797	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);	973	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
798	#endif	974	#endif
799	#if EV_USE_EPOLL	975	#if EV_USE_EPOLL
800	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);	976	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
801	#endif	977	#endif
802	#if EV_USE_POLL	978	#if EV_USE_POLL
803	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);	979	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
804	#endif	980	#endif
805	#if EV_USE_SELECT	981	#if EV_USE_SELECT
806	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);	982	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
807	#endif	983	#endif
808		984
809	ev_init (&sigev, sigcb);	985	ev_init (&sigev, sigcb);
810	ev_set_priority (&sigev, EV_MAXPRI);	986	ev_set_priority (&sigev, EV_MAXPRI);
811	}	987	}
812	}	988	}
813		989
814	static void	990	static void noinline
815	loop_destroy (EV_P)	991	loop_destroy (EV_P)
816	{	992	{
817	int i;	993	int i;
818		994
		995	#if EV_USE_INOTIFY
		996	if (fs_fd >= 0)
		997	close (fs_fd);
		998	#endif
		999
		1000	if (backend_fd >= 0)
		1001	close (backend_fd);
		1002
819	#if EV_USE_PORT	1003	#if EV_USE_PORT
820	if (method == EVMETHOD_PORT ) port_destroy (EV_A);	1004	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
821	#endif	1005	#endif
822	#if EV_USE_KQUEUE	1006	#if EV_USE_KQUEUE
823	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1007	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
824	#endif	1008	#endif
825	#if EV_USE_EPOLL	1009	#if EV_USE_EPOLL
826	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1010	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
827	#endif	1011	#endif
828	#if EV_USE_POLL	1012	#if EV_USE_POLL
829	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1013	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
830	#endif	1014	#endif
831	#if EV_USE_SELECT	1015	#if EV_USE_SELECT
832	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1016	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
833	#endif	1017	#endif
834		1018
835	for (i = NUMPRI; i--; )	1019	for (i = NUMPRI; i--; )
		1020	{
836	array_free (pending, [i]);	1021	array_free (pending, [i]);
		1022	#if EV_IDLE_ENABLE
		1023	array_free (idle, [i]);
		1024	#endif
		1025	}
837		1026
838	/* have to use the microsoft-never-gets-it-right macro */	1027	/* have to use the microsoft-never-gets-it-right macro */
839	array_free (fdchange, EMPTY0);	1028	array_free (fdchange, EMPTY);
840	array_free (timer, EMPTY0);	1029	array_free (timer, EMPTY);
841	#if EV_PERIODICS	1030	#if EV_PERIODIC_ENABLE
842	array_free (periodic, EMPTY0);	1031	array_free (periodic, EMPTY);
843	#endif	1032	#endif
844	array_free (idle, EMPTY0);
845	array_free (prepare, EMPTY0);	1033	array_free (prepare, EMPTY);
846	array_free (check, EMPTY0);	1034	array_free (check, EMPTY);
847		1035
848	method = 0;	1036	backend = 0;
849	}	1037	}
850		1038
851	static void	1039	void inline_size infy_fork (EV_P);
		1040
		1041	void inline_size
852	loop_fork (EV_P)	1042	loop_fork (EV_P)
853	{	1043	{
854	#if EV_USE_PORT	1044	#if EV_USE_PORT
855	if (method == EVMETHOD_PORT ) port_fork (EV_A);	1045	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
856	#endif	1046	#endif
857	#if EV_USE_KQUEUE	1047	#if EV_USE_KQUEUE
858	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1048	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
859	#endif	1049	#endif
860	#if EV_USE_EPOLL	1050	#if EV_USE_EPOLL
861	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1051	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1052	#endif
		1053	#if EV_USE_INOTIFY
		1054	infy_fork (EV_A);
862	#endif	1055	#endif
863		1056
864	if (ev_is_active (&sigev))	1057	if (ev_is_active (&sigev))
865	{	1058	{
866	/* default loop */	1059	/* default loop */
…		…
887		1080
888	memset (loop, 0, sizeof (struct ev_loop));	1081	memset (loop, 0, sizeof (struct ev_loop));
889		1082
890	loop_init (EV_A_ flags);	1083	loop_init (EV_A_ flags);
891		1084
892	if (ev_method (EV_A))	1085	if (ev_backend (EV_A))
893	return loop;	1086	return loop;
894		1087
895	return 0;	1088	return 0;
896	}	1089	}
897		1090
…		…
930	ev_default_loop_ptr = 1;	1123	ev_default_loop_ptr = 1;
931	#endif	1124	#endif
932		1125
933	loop_init (EV_A_ flags);	1126	loop_init (EV_A_ flags);
934		1127
935	if (ev_method (EV_A))	1128	if (ev_backend (EV_A))
936	{	1129	{
937	siginit (EV_A);	1130	siginit (EV_A);
938		1131
939	#ifndef _WIN32	1132	#ifndef _WIN32
940	ev_signal_init (&childev, childcb, SIGCHLD);	1133	ev_signal_init (&childev, childcb, SIGCHLD);
…		…
976	{	1169	{
977	#if EV_MULTIPLICITY	1170	#if EV_MULTIPLICITY
978	struct ev_loop *loop = ev_default_loop_ptr;	1171	struct ev_loop *loop = ev_default_loop_ptr;
979	#endif	1172	#endif
980		1173
981	if (method)	1174	if (backend)
982	postfork = 1;	1175	postfork = 1;
983	}	1176	}
984		1177
985	/*****************************************************************************/	1178	/*****************************************************************************/
986		1179
987	static int	1180	void
988	any_pending (EV_P)	1181	ev_invoke (EV_P_ void *w, int revents)
989	{	1182	{
990	int pri;	1183	EV_CB_INVOKE ((W)w, revents);
991
992	for (pri = NUMPRI; pri--; )
993	if (pendingcnt [pri])
994	return 1;
995
996	return 0;
997	}	1184	}
998		1185
999	inline void	1186	void inline_speed
1000	call_pending (EV_P)	1187	call_pending (EV_P)
1001	{	1188	{
1002	int pri;	1189	int pri;
1003		1190
1004	for (pri = NUMPRI; pri--; )	1191	for (pri = NUMPRI; pri--; )
…		…
1006	{	1193	{
1007	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1194	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1008		1195
1009	if (expect_true (p->w))	1196	if (expect_true (p->w))
1010	{	1197	{
		1198	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1199
1011	p->w->pending = 0;	1200	p->w->pending = 0;
1012	EV_CB_INVOKE (p->w, p->events);	1201	EV_CB_INVOKE (p->w, p->events);
1013	}	1202	}
1014	}	1203	}
1015	}	1204	}
1016		1205
1017	inline void	1206	void inline_size
1018	timers_reify (EV_P)	1207	timers_reify (EV_P)
1019	{	1208	{
1020	while (timercnt && ((WT)timers [0])->at <= mn_now)	1209	while (timercnt && ((WT)timers [0])->at <= mn_now)
1021	{	1210	{
1022	struct ev_timer *w = timers [0];	1211	ev_timer *w = timers [0];
1023		1212
1024	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1213	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1025		1214
1026	/* first reschedule or stop timer */	1215	/* first reschedule or stop timer */
1027	if (w->repeat)	1216	if (w->repeat)
1028	{	1217	{
1029	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1218	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
…		…
1039		1228
1040	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1229	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1041	}	1230	}
1042	}	1231	}
1043		1232
1044	#if EV_PERIODICS	1233	#if EV_PERIODIC_ENABLE
1045	inline void	1234	void inline_size
1046	periodics_reify (EV_P)	1235	periodics_reify (EV_P)
1047	{	1236	{
1048	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1237	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1049	{	1238	{
1050	struct ev_periodic *w = periodics [0];	1239	ev_periodic *w = periodics [0];
1051		1240
1052	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1241	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1053		1242
1054	/* first reschedule or stop timer */	1243	/* first reschedule or stop timer */
1055	if (w->reschedule_cb)	1244	if (w->reschedule_cb)
1056	{	1245	{
1057	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1246	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1058	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1247	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1059	downheap ((WT *)periodics, periodiccnt, 0);	1248	downheap ((WT *)periodics, periodiccnt, 0);
1060	}	1249	}
1061	else if (w->interval)	1250	else if (w->interval)
1062	{	1251	{
1063	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1252	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1253	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1064	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1254	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1065	downheap ((WT *)periodics, periodiccnt, 0);	1255	downheap ((WT *)periodics, periodiccnt, 0);
1066	}	1256	}
1067	else	1257	else
1068	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1258	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1069		1259
1070	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1260	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1071	}	1261	}
1072	}	1262	}
1073		1263
1074	static void	1264	static void noinline
1075	periodics_reschedule (EV_P)	1265	periodics_reschedule (EV_P)
1076	{	1266	{
1077	int i;	1267	int i;
1078		1268
1079	/* adjust periodics after time jump */	1269	/* adjust periodics after time jump */
1080	for (i = 0; i < periodiccnt; ++i)	1270	for (i = 0; i < periodiccnt; ++i)
1081	{	1271	{
1082	struct ev_periodic *w = periodics [i];	1272	ev_periodic *w = periodics [i];
1083		1273
1084	if (w->reschedule_cb)	1274	if (w->reschedule_cb)
1085	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1275	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1086	else if (w->interval)	1276	else if (w->interval)
1087	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1277	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1088	}	1278	}
1089		1279
1090	/* now rebuild the heap */	1280	/* now rebuild the heap */
1091	for (i = periodiccnt >> 1; i--; )	1281	for (i = periodiccnt >> 1; i--; )
1092	downheap ((WT *)periodics, periodiccnt, i);	1282	downheap ((WT *)periodics, periodiccnt, i);
1093	}	1283	}
1094	#endif	1284	#endif
1095		1285
1096	inline int	1286	#if EV_IDLE_ENABLE
1097	time_update_monotonic (EV_P)	1287	void inline_size
		1288	idle_reify (EV_P)
1098	{	1289	{
		1290	if (expect_false (idleall))
		1291	{
		1292	int pri;
		1293
		1294	for (pri = NUMPRI; pri--; )
		1295	{
		1296	if (pendingcnt [pri])
		1297	break;
		1298
		1299	if (idlecnt [pri])
		1300	{
		1301	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1302	break;
		1303	}
		1304	}
		1305	}
		1306	}
		1307	#endif
		1308
		1309	void inline_speed
		1310	time_update (EV_P_ ev_tstamp max_block)
		1311	{
		1312	int i;
		1313
		1314	#if EV_USE_MONOTONIC
		1315	if (expect_true (have_monotonic))
		1316	{
		1317	ev_tstamp odiff = rtmn_diff;
		1318
1099	mn_now = get_clock ();	1319	mn_now = get_clock ();
1100		1320
		1321	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1322	/* interpolate in the meantime */
1101	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1323	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1102	{	1324	{
1103	ev_rt_now = rtmn_diff + mn_now;	1325	ev_rt_now = rtmn_diff + mn_now;
1104	return 0;	1326	return;
1105	}	1327	}
1106	else	1328
1107	{
1108	now_floor = mn_now;	1329	now_floor = mn_now;
1109	ev_rt_now = ev_time ();	1330	ev_rt_now = ev_time ();
1110	return 1;
1111	}
1112	}
1113		1331
1114	inline void	1332	/* loop a few times, before making important decisions.
1115	time_update (EV_P)	1333	* on the choice of "4": one iteration isn't enough,
1116	{	1334	* in case we get preempted during the calls to
1117	int i;	1335	* ev_time and get_clock. a second call is almost guaranteed
1118		1336	* to succeed in that case, though. and looping a few more times
1119	#if EV_USE_MONOTONIC	1337	* doesn't hurt either as we only do this on time-jumps or
1120	if (expect_true (have_monotonic))	1338	* in the unlikely event of having been preempted here.
1121	{	1339	*/
1122	if (time_update_monotonic (EV_A))	1340	for (i = 4; --i; )
1123	{	1341	{
1124	ev_tstamp odiff = rtmn_diff;
1125
1126	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1127	{
1128	rtmn_diff = ev_rt_now - mn_now;	1342	rtmn_diff = ev_rt_now - mn_now;
1129		1343
1130	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1344	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1131	return; /* all is well */	1345	return; /* all is well */
1132		1346
1133	ev_rt_now = ev_time ();	1347	ev_rt_now = ev_time ();
1134	mn_now = get_clock ();	1348	mn_now = get_clock ();
1135	now_floor = mn_now;	1349	now_floor = mn_now;
1136	}	1350	}
1137		1351
1138	# if EV_PERIODICS	1352	# if EV_PERIODIC_ENABLE
		1353	periodics_reschedule (EV_A);
		1354	# endif
		1355	/* no timer adjustment, as the monotonic clock doesn't jump */
		1356	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1357	}
		1358	else
		1359	#endif
		1360	{
		1361	ev_rt_now = ev_time ();
		1362
		1363	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1364	{
		1365	#if EV_PERIODIC_ENABLE
1139	periodics_reschedule (EV_A);	1366	periodics_reschedule (EV_A);
1140	# endif	1367	#endif
1141	/* no timer adjustment, as the monotonic clock doesn't jump */
1142	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1143	}
1144	}
1145	else
1146	#endif
1147	{
1148	ev_rt_now = ev_time ();
1149
1150	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1151	{
1152	#if EV_PERIODICS
1153	periodics_reschedule (EV_A);
1154	#endif
1155
1156	/* adjust timers. this is easy, as the offset is the same for all */	1368	/* adjust timers. this is easy, as the offset is the same for all of them */
1157	for (i = 0; i < timercnt; ++i)	1369	for (i = 0; i < timercnt; ++i)
1158	((WT)timers [i])->at += ev_rt_now - mn_now;	1370	((WT)timers [i])->at += ev_rt_now - mn_now;
1159	}	1371	}
1160		1372
1161	mn_now = ev_rt_now;	1373	mn_now = ev_rt_now;
…		…
1177	static int loop_done;	1389	static int loop_done;
1178		1390
1179	void	1391	void
1180	ev_loop (EV_P_ int flags)	1392	ev_loop (EV_P_ int flags)
1181	{	1393	{
1182	double block;
1183	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1394	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1395	? EVUNLOOP_ONE
		1396	: EVUNLOOP_CANCEL;
1184		1397
1185	while (activecnt)	1398	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1399
		1400	do
1186	{	1401	{
		1402	#ifndef _WIN32
		1403	if (expect_false (curpid)) /* penalise the forking check even more */
		1404	if (expect_false (getpid () != curpid))
		1405	{
		1406	curpid = getpid ();
		1407	postfork = 1;
		1408	}
		1409	#endif
		1410
		1411	#if EV_FORK_ENABLE
		1412	/* we might have forked, so queue fork handlers */
		1413	if (expect_false (postfork))
		1414	if (forkcnt)
		1415	{
		1416	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1417	call_pending (EV_A);
		1418	}
		1419	#endif
		1420
1187	/* queue check watchers (and execute them) */	1421	/* queue prepare watchers (and execute them) */
1188	if (expect_false (preparecnt))	1422	if (expect_false (preparecnt))
1189	{	1423	{
1190	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1424	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1191	call_pending (EV_A);	1425	call_pending (EV_A);
1192	}	1426	}
1193		1427
		1428	if (expect_false (!activecnt))
		1429	break;
		1430
1194	/* we might have forked, so reify kernel state if necessary */	1431	/* we might have forked, so reify kernel state if necessary */
1195	if (expect_false (postfork))	1432	if (expect_false (postfork))
1196	loop_fork (EV_A);	1433	loop_fork (EV_A);
1197		1434
1198	/* update fd-related kernel structures */	1435	/* update fd-related kernel structures */
1199	fd_reify (EV_A);	1436	fd_reify (EV_A);
1200		1437
1201	/* calculate blocking time */	1438	/* calculate blocking time */
		1439	{
		1440	ev_tstamp block;
1202		1441
1203	/* we only need this for !monotonic clock or timers, but as we basically	1442	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1204	always have timers, we just calculate it always */	1443	block = 0.; /* do not block at all */
1205	#if EV_USE_MONOTONIC
1206	if (expect_true (have_monotonic))
1207	time_update_monotonic (EV_A);
1208	else	1444	else
1209	#endif
1210	{	1445	{
1211	ev_rt_now = ev_time ();	1446	/* update time to cancel out callback processing overhead */
1212	mn_now = ev_rt_now;	1447	time_update (EV_A_ 1e100);
1213	}
1214		1448
1215	if (flags & EVLOOP_NONBLOCK || idlecnt)
1216	block = 0.;
1217	else
1218	{
1219	block = MAX_BLOCKTIME;	1449	block = MAX_BLOCKTIME;
1220		1450
1221	if (timercnt)	1451	if (timercnt)
1222	{	1452	{
1223	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1453	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1224	if (block > to) block = to;	1454	if (block > to) block = to;
1225	}	1455	}
1226		1456
1227	#if EV_PERIODICS	1457	#if EV_PERIODIC_ENABLE
1228	if (periodiccnt)	1458	if (periodiccnt)
1229	{	1459	{
1230	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1460	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1231	if (block > to) block = to;	1461	if (block > to) block = to;
1232	}	1462	}
1233	#endif	1463	#endif
1234		1464
1235	if (expect_false (block < 0.)) block = 0.;	1465	if (expect_false (block < 0.)) block = 0.;
1236	}	1466	}
1237		1467
		1468	++loop_count;
1238	method_poll (EV_A_ block);	1469	backend_poll (EV_A_ block);
1239		1470
1240	/* update ev_rt_now, do magic */	1471	/* update ev_rt_now, do magic */
1241	time_update (EV_A);	1472	time_update (EV_A_ block);
		1473	}
1242		1474
1243	/* queue pending timers and reschedule them */	1475	/* queue pending timers and reschedule them */
1244	timers_reify (EV_A); /* relative timers called last */	1476	timers_reify (EV_A); /* relative timers called last */
1245	#if EV_PERIODICS	1477	#if EV_PERIODIC_ENABLE
1246	periodics_reify (EV_A); /* absolute timers called first */	1478	periodics_reify (EV_A); /* absolute timers called first */
1247	#endif	1479	#endif
1248		1480
		1481	#if EV_IDLE_ENABLE
1249	/* queue idle watchers unless io or timers are pending */	1482	/* queue idle watchers unless other events are pending */
1250	if (idlecnt && !any_pending (EV_A))	1483	idle_reify (EV_A);
1251	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1484	#endif
1252		1485
1253	/* queue check watchers, to be executed first */	1486	/* queue check watchers, to be executed first */
1254	if (expect_false (checkcnt))	1487	if (expect_false (checkcnt))
1255	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1488	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1256		1489
1257	call_pending (EV_A);	1490	call_pending (EV_A);
1258		1491
1259	if (expect_false (loop_done))
1260	break;
1261	}	1492	}
		1493	while (expect_true (activecnt && !loop_done));
1262		1494
1263	if (loop_done != 2)	1495	if (loop_done == EVUNLOOP_ONE)
1264	loop_done = 0;	1496	loop_done = EVUNLOOP_CANCEL;
1265	}	1497	}
1266		1498
1267	void	1499	void
1268	ev_unloop (EV_P_ int how)	1500	ev_unloop (EV_P_ int how)
1269	{	1501	{
1270	loop_done = how;	1502	loop_done = how;
1271	}	1503	}
1272		1504
1273	/*****************************************************************************/	1505	/*****************************************************************************/
1274		1506
1275	inline void	1507	void inline_size
1276	wlist_add (WL *head, WL elem)	1508	wlist_add (WL *head, WL elem)
1277	{	1509	{
1278	elem->next = *head;	1510	elem->next = *head;
1279	*head = elem;	1511	*head = elem;
1280	}	1512	}
1281		1513
1282	inline void	1514	void inline_size
1283	wlist_del (WL *head, WL elem)	1515	wlist_del (WL *head, WL elem)
1284	{	1516	{
1285	while (*head)	1517	while (*head)
1286	{	1518	{
1287	if (*head == elem)	1519	if (*head == elem)
…		…
1292		1524
1293	head = &(*head)->next;	1525	head = &(*head)->next;
1294	}	1526	}
1295	}	1527	}
1296		1528
1297	inline void	1529	void inline_speed
1298	ev_clear_pending (EV_P_ W w)	1530	clear_pending (EV_P_ W w)
1299	{	1531	{
1300	if (w->pending)	1532	if (w->pending)
1301	{	1533	{
1302	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1534	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1303	w->pending = 0;	1535	w->pending = 0;
1304	}	1536	}
1305	}	1537	}
1306		1538
1307	inline void	1539	int
		1540	ev_clear_pending (EV_P_ void *w)
		1541	{
		1542	W w_ = (W)w;
		1543	int pending = w_->pending;
		1544
		1545	if (expect_true (pending))
		1546	{
		1547	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1548	w_->pending = 0;
		1549	p->w = 0;
		1550	return p->events;
		1551	}
		1552	else
		1553	return 0;
		1554	}
		1555
		1556	void inline_size
		1557	pri_adjust (EV_P_ W w)
		1558	{
		1559	int pri = w->priority;
		1560	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1561	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1562	w->priority = pri;
		1563	}
		1564
		1565	void inline_speed
1308	ev_start (EV_P_ W w, int active)	1566	ev_start (EV_P_ W w, int active)
1309	{	1567	{
1310	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1568	pri_adjust (EV_A_ w);
1311	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1312
1313	w->active = active;	1569	w->active = active;
1314	ev_ref (EV_A);	1570	ev_ref (EV_A);
1315	}	1571	}
1316		1572
1317	inline void	1573	void inline_size
1318	ev_stop (EV_P_ W w)	1574	ev_stop (EV_P_ W w)
1319	{	1575	{
1320	ev_unref (EV_A);	1576	ev_unref (EV_A);
1321	w->active = 0;	1577	w->active = 0;
1322	}	1578	}
1323		1579
1324	/*****************************************************************************/	1580	/*****************************************************************************/
1325		1581
1326	void	1582	void noinline
1327	ev_io_start (EV_P_ struct ev_io *w)	1583	ev_io_start (EV_P_ ev_io *w)
1328	{	1584	{
1329	int fd = w->fd;	1585	int fd = w->fd;
1330		1586
1331	if (expect_false (ev_is_active (w)))	1587	if (expect_false (ev_is_active (w)))
1332	return;	1588	return;
…		…
1338	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1594	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1339		1595
1340	fd_change (EV_A_ fd);	1596	fd_change (EV_A_ fd);
1341	}	1597	}
1342		1598
1343	void	1599	void noinline
1344	ev_io_stop (EV_P_ struct ev_io *w)	1600	ev_io_stop (EV_P_ ev_io *w)
1345	{	1601	{
1346	ev_clear_pending (EV_A_ (W)w);	1602	clear_pending (EV_A_ (W)w);
1347	if (expect_false (!ev_is_active (w)))	1603	if (expect_false (!ev_is_active (w)))
1348	return;	1604	return;
1349		1605
1350	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1606	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1351		1607
…		…
1353	ev_stop (EV_A_ (W)w);	1609	ev_stop (EV_A_ (W)w);
1354		1610
1355	fd_change (EV_A_ w->fd);	1611	fd_change (EV_A_ w->fd);
1356	}	1612	}
1357		1613
1358	void	1614	void noinline
1359	ev_timer_start (EV_P_ struct ev_timer *w)	1615	ev_timer_start (EV_P_ ev_timer *w)
1360	{	1616	{
1361	if (expect_false (ev_is_active (w)))	1617	if (expect_false (ev_is_active (w)))
1362	return;	1618	return;
1363		1619
1364	((WT)w)->at += mn_now;	1620	((WT)w)->at += mn_now;
1365		1621
1366	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1622	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1367		1623
1368	ev_start (EV_A_ (W)w, ++timercnt);	1624	ev_start (EV_A_ (W)w, ++timercnt);
1369	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);	1625	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1370	timers [timercnt - 1] = w;	1626	timers [timercnt - 1] = w;
1371	upheap ((WT *)timers, timercnt - 1);	1627	upheap ((WT *)timers, timercnt - 1);
1372		1628
		1629	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1630	}
		1631
		1632	void noinline
		1633	ev_timer_stop (EV_P_ ev_timer *w)
		1634	{
		1635	clear_pending (EV_A_ (W)w);
		1636	if (expect_false (!ev_is_active (w)))
		1637	return;
		1638
1373	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1639	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1374	}
1375		1640
1376	void	1641	{
1377	ev_timer_stop (EV_P_ struct ev_timer *w)	1642	int active = ((W)w)->active;
1378	{
1379	ev_clear_pending (EV_A_ (W)w);
1380	if (expect_false (!ev_is_active (w)))
1381	return;
1382		1643
1383	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1384
1385	if (expect_true (((W)w)->active < timercnt--))	1644	if (expect_true (--active < --timercnt))
1386	{	1645	{
1387	timers [((W)w)->active - 1] = timers [timercnt];	1646	timers [active] = timers [timercnt];
1388	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1647	adjustheap ((WT *)timers, timercnt, active);
1389	}	1648	}
		1649	}
1390		1650
1391	((WT)w)->at -= mn_now;	1651	((WT)w)->at -= mn_now;
1392		1652
1393	ev_stop (EV_A_ (W)w);	1653	ev_stop (EV_A_ (W)w);
1394	}	1654	}
1395		1655
1396	void	1656	void noinline
1397	ev_timer_again (EV_P_ struct ev_timer *w)	1657	ev_timer_again (EV_P_ ev_timer *w)
1398	{	1658	{
1399	if (ev_is_active (w))	1659	if (ev_is_active (w))
1400	{	1660	{
1401	if (w->repeat)	1661	if (w->repeat)
1402	{	1662	{
…		…
1411	w->at = w->repeat;	1671	w->at = w->repeat;
1412	ev_timer_start (EV_A_ w);	1672	ev_timer_start (EV_A_ w);
1413	}	1673	}
1414	}	1674	}
1415		1675
1416	#if EV_PERIODICS	1676	#if EV_PERIODIC_ENABLE
1417	void	1677	void noinline
1418	ev_periodic_start (EV_P_ struct ev_periodic *w)	1678	ev_periodic_start (EV_P_ ev_periodic *w)
1419	{	1679	{
1420	if (expect_false (ev_is_active (w)))	1680	if (expect_false (ev_is_active (w)))
1421	return;	1681	return;
1422		1682
1423	if (w->reschedule_cb)	1683	if (w->reschedule_cb)
1424	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1684	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1425	else if (w->interval)	1685	else if (w->interval)
1426	{	1686	{
1427	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1687	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1428	/* this formula differs from the one in periodic_reify because we do not always round up */	1688	/* this formula differs from the one in periodic_reify because we do not always round up */
1429	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1689	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1430	}	1690	}
		1691	else
		1692	((WT)w)->at = w->offset;
1431		1693
1432	ev_start (EV_A_ (W)w, ++periodiccnt);	1694	ev_start (EV_A_ (W)w, ++periodiccnt);
1433	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1695	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1434	periodics [periodiccnt - 1] = w;	1696	periodics [periodiccnt - 1] = w;
1435	upheap ((WT *)periodics, periodiccnt - 1);	1697	upheap ((WT *)periodics, periodiccnt - 1);
1436		1698
		1699	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1700	}
		1701
		1702	void noinline
		1703	ev_periodic_stop (EV_P_ ev_periodic *w)
		1704	{
		1705	clear_pending (EV_A_ (W)w);
		1706	if (expect_false (!ev_is_active (w)))
		1707	return;
		1708
1437	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1709	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1438	}
1439		1710
1440	void	1711	{
1441	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1712	int active = ((W)w)->active;
1442	{
1443	ev_clear_pending (EV_A_ (W)w);
1444	if (expect_false (!ev_is_active (w)))
1445	return;
1446		1713
1447	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1448
1449	if (expect_true (((W)w)->active < periodiccnt--))	1714	if (expect_true (--active < --periodiccnt))
1450	{	1715	{
1451	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1716	periodics [active] = periodics [periodiccnt];
1452	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1717	adjustheap ((WT *)periodics, periodiccnt, active);
1453	}	1718	}
		1719	}
1454		1720
1455	ev_stop (EV_A_ (W)w);	1721	ev_stop (EV_A_ (W)w);
1456	}	1722	}
1457		1723
1458	void	1724	void noinline
1459	ev_periodic_again (EV_P_ struct ev_periodic *w)	1725	ev_periodic_again (EV_P_ ev_periodic *w)
1460	{	1726	{
1461	/* TODO: use adjustheap and recalculation */	1727	/* TODO: use adjustheap and recalculation */
1462	ev_periodic_stop (EV_A_ w);	1728	ev_periodic_stop (EV_A_ w);
1463	ev_periodic_start (EV_A_ w);	1729	ev_periodic_start (EV_A_ w);
1464	}	1730	}
1465	#endif	1731	#endif
1466		1732
1467	void
1468	ev_idle_start (EV_P_ struct ev_idle *w)
1469	{
1470	if (expect_false (ev_is_active (w)))
1471	return;
1472
1473	ev_start (EV_A_ (W)w, ++idlecnt);
1474	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1475	idles [idlecnt - 1] = w;
1476	}
1477
1478	void
1479	ev_idle_stop (EV_P_ struct ev_idle *w)
1480	{
1481	ev_clear_pending (EV_A_ (W)w);
1482	if (expect_false (!ev_is_active (w)))
1483	return;
1484
1485	idles [((W)w)->active - 1] = idles [--idlecnt];
1486	ev_stop (EV_A_ (W)w);
1487	}
1488
1489	void
1490	ev_prepare_start (EV_P_ struct ev_prepare *w)
1491	{
1492	if (expect_false (ev_is_active (w)))
1493	return;
1494
1495	ev_start (EV_A_ (W)w, ++preparecnt);
1496	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1497	prepares [preparecnt - 1] = w;
1498	}
1499
1500	void
1501	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1502	{
1503	ev_clear_pending (EV_A_ (W)w);
1504	if (expect_false (!ev_is_active (w)))
1505	return;
1506
1507	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1508	ev_stop (EV_A_ (W)w);
1509	}
1510
1511	void
1512	ev_check_start (EV_P_ struct ev_check *w)
1513	{
1514	if (expect_false (ev_is_active (w)))
1515	return;
1516
1517	ev_start (EV_A_ (W)w, ++checkcnt);
1518	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1519	checks [checkcnt - 1] = w;
1520	}
1521
1522	void
1523	ev_check_stop (EV_P_ struct ev_check *w)
1524	{
1525	ev_clear_pending (EV_A_ (W)w);
1526	if (expect_false (!ev_is_active (w)))
1527	return;
1528
1529	checks [((W)w)->active - 1] = checks [--checkcnt];
1530	ev_stop (EV_A_ (W)w);
1531	}
1532
1533	#ifndef SA_RESTART	1733	#ifndef SA_RESTART
1534	# define SA_RESTART 0	1734	# define SA_RESTART 0
1535	#endif	1735	#endif
1536		1736
1537	void	1737	void noinline
1538	ev_signal_start (EV_P_ struct ev_signal *w)	1738	ev_signal_start (EV_P_ ev_signal *w)
1539	{	1739	{
1540	#if EV_MULTIPLICITY	1740	#if EV_MULTIPLICITY
1541	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1741	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1542	#endif	1742	#endif
1543	if (expect_false (ev_is_active (w)))	1743	if (expect_false (ev_is_active (w)))
…		…
1561	sigaction (w->signum, &sa, 0);	1761	sigaction (w->signum, &sa, 0);
1562	#endif	1762	#endif
1563	}	1763	}
1564	}	1764	}
1565		1765
1566	void	1766	void noinline
1567	ev_signal_stop (EV_P_ struct ev_signal *w)	1767	ev_signal_stop (EV_P_ ev_signal *w)
1568	{	1768	{
1569	ev_clear_pending (EV_A_ (W)w);	1769	clear_pending (EV_A_ (W)w);
1570	if (expect_false (!ev_is_active (w)))	1770	if (expect_false (!ev_is_active (w)))
1571	return;	1771	return;
1572		1772
1573	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1773	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1574	ev_stop (EV_A_ (W)w);	1774	ev_stop (EV_A_ (W)w);
…		…
1576	if (!signals [w->signum - 1].head)	1776	if (!signals [w->signum - 1].head)
1577	signal (w->signum, SIG_DFL);	1777	signal (w->signum, SIG_DFL);
1578	}	1778	}
1579		1779
1580	void	1780	void
1581	ev_child_start (EV_P_ struct ev_child *w)	1781	ev_child_start (EV_P_ ev_child *w)
1582	{	1782	{
1583	#if EV_MULTIPLICITY	1783	#if EV_MULTIPLICITY
1584	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1784	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1585	#endif	1785	#endif
1586	if (expect_false (ev_is_active (w)))	1786	if (expect_false (ev_is_active (w)))
1587	return;	1787	return;
1588		1788
1589	ev_start (EV_A_ (W)w, 1);	1789	ev_start (EV_A_ (W)w, 1);
1590	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1790	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1591	}	1791	}
1592		1792
1593	void	1793	void
1594	ev_child_stop (EV_P_ struct ev_child *w)	1794	ev_child_stop (EV_P_ ev_child *w)
1595	{	1795	{
1596	ev_clear_pending (EV_A_ (W)w);	1796	clear_pending (EV_A_ (W)w);
1597	if (expect_false (!ev_is_active (w)))	1797	if (expect_false (!ev_is_active (w)))
1598	return;	1798	return;
1599		1799
1600	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1800	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1601	ev_stop (EV_A_ (W)w);	1801	ev_stop (EV_A_ (W)w);
1602	}	1802	}
1603		1803
		1804	#if EV_STAT_ENABLE
		1805
		1806	# ifdef _WIN32
		1807	# undef lstat
		1808	# define lstat(a,b) _stati64 (a,b)
		1809	# endif
		1810
		1811	#define DEF_STAT_INTERVAL 5.0074891
		1812	#define MIN_STAT_INTERVAL 0.1074891
		1813
		1814	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1815
		1816	#if EV_USE_INOTIFY
		1817	# define EV_INOTIFY_BUFSIZE 8192
		1818
		1819	static void noinline
		1820	infy_add (EV_P_ ev_stat *w)
		1821	{
		1822	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);
		1823
		1824	if (w->wd < 0)
		1825	{
		1826	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1827
		1828	/* monitor some parent directory for speedup hints */
		1829	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1830	{
		1831	char path [4096];
		1832	strcpy (path, w->path);
		1833
		1834	do
		1835	{
		1836	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1837	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1838
		1839	char *pend = strrchr (path, '/');
		1840
		1841	if (!pend)
		1842	break; /* whoops, no '/', complain to your admin */
		1843
		1844	*pend = 0;
		1845	w->wd = inotify_add_watch (fs_fd, path, mask);
		1846	}
		1847	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1848	}
		1849	}
		1850	else
		1851	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1852
		1853	if (w->wd >= 0)
		1854	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1855	}
		1856
		1857	static void noinline
		1858	infy_del (EV_P_ ev_stat *w)
		1859	{
		1860	int slot;
		1861	int wd = w->wd;
		1862
		1863	if (wd < 0)
		1864	return;
		1865
		1866	w->wd = -2;
		1867	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1868	wlist_del (&fs_hash [slot].head, (WL)w);
		1869
		1870	/* remove this watcher, if others are watching it, they will rearm */
		1871	inotify_rm_watch (fs_fd, wd);
		1872	}
		1873
		1874	static void noinline
		1875	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1876	{
		1877	if (slot < 0)
		1878	/* overflow, need to check for all hahs slots */
		1879	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1880	infy_wd (EV_A_ slot, wd, ev);
		1881	else
		1882	{
		1883	WL w_;
		1884
		1885	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1886	{
		1887	ev_stat *w = (ev_stat *)w_;
		1888	w_ = w_->next; /* lets us remove this watcher and all before it */
		1889
		1890	if (w->wd == wd || wd == -1)
		1891	{
		1892	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1893	{
		1894	w->wd = -1;
		1895	infy_add (EV_A_ w); /* re-add, no matter what */
		1896	}
		1897
		1898	stat_timer_cb (EV_A_ &w->timer, 0);
		1899	}
		1900	}
		1901	}
		1902	}
		1903
		1904	static void
		1905	infy_cb (EV_P_ ev_io *w, int revents)
		1906	{
		1907	char buf [EV_INOTIFY_BUFSIZE];
		1908	struct inotify_event *ev = (struct inotify_event *)buf;
		1909	int ofs;
		1910	int len = read (fs_fd, buf, sizeof (buf));
		1911
		1912	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1913	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1914	}
		1915
		1916	void inline_size
		1917	infy_init (EV_P)
		1918	{
		1919	if (fs_fd != -2)
		1920	return;
		1921
		1922	fs_fd = inotify_init ();
		1923
		1924	if (fs_fd >= 0)
		1925	{
		1926	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1927	ev_set_priority (&fs_w, EV_MAXPRI);
		1928	ev_io_start (EV_A_ &fs_w);
		1929	}
		1930	}
		1931
		1932	void inline_size
		1933	infy_fork (EV_P)
		1934	{
		1935	int slot;
		1936
		1937	if (fs_fd < 0)
		1938	return;
		1939
		1940	close (fs_fd);
		1941	fs_fd = inotify_init ();
		1942
		1943	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1944	{
		1945	WL w_ = fs_hash [slot].head;
		1946	fs_hash [slot].head = 0;
		1947
		1948	while (w_)
		1949	{
		1950	ev_stat *w = (ev_stat *)w_;
		1951	w_ = w_->next; /* lets us add this watcher */
		1952
		1953	w->wd = -1;
		1954
		1955	if (fs_fd >= 0)
		1956	infy_add (EV_A_ w); /* re-add, no matter what */
		1957	else
		1958	ev_timer_start (EV_A_ &w->timer);
		1959	}
		1960
		1961	}
		1962	}
		1963
		1964	#endif
		1965
		1966	void
		1967	ev_stat_stat (EV_P_ ev_stat *w)
		1968	{
		1969	if (lstat (w->path, &w->attr) < 0)
		1970	w->attr.st_nlink = 0;
		1971	else if (!w->attr.st_nlink)
		1972	w->attr.st_nlink = 1;
		1973	}
		1974
		1975	static void noinline
		1976	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1977	{
		1978	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1979
		1980	/* we copy this here each the time so that */
		1981	/* prev has the old value when the callback gets invoked */
		1982	w->prev = w->attr;
		1983	ev_stat_stat (EV_A_ w);
		1984
		1985	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1986	if (
		1987	w->prev.st_dev != w->attr.st_dev
		1988	|| w->prev.st_ino != w->attr.st_ino
		1989	|| w->prev.st_mode != w->attr.st_mode
		1990	|| w->prev.st_nlink != w->attr.st_nlink
		1991	|| w->prev.st_uid != w->attr.st_uid
		1992	|| w->prev.st_gid != w->attr.st_gid
		1993	|| w->prev.st_rdev != w->attr.st_rdev
		1994	|| w->prev.st_size != w->attr.st_size
		1995	|| w->prev.st_atime != w->attr.st_atime
		1996	|| w->prev.st_mtime != w->attr.st_mtime
		1997	|| w->prev.st_ctime != w->attr.st_ctime
		1998	) {
		1999	#if EV_USE_INOTIFY
		2000	infy_del (EV_A_ w);
		2001	infy_add (EV_A_ w);
		2002	ev_stat_stat (EV_A_ w); /* avoid race... */
		2003	#endif
		2004
		2005	ev_feed_event (EV_A_ w, EV_STAT);
		2006	}
		2007	}
		2008
		2009	void
		2010	ev_stat_start (EV_P_ ev_stat *w)
		2011	{
		2012	if (expect_false (ev_is_active (w)))
		2013	return;
		2014
		2015	/* since we use memcmp, we need to clear any padding data etc. */
		2016	memset (&w->prev, 0, sizeof (ev_statdata));
		2017	memset (&w->attr, 0, sizeof (ev_statdata));
		2018
		2019	ev_stat_stat (EV_A_ w);
		2020
		2021	if (w->interval < MIN_STAT_INTERVAL)
		2022	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2023
		2024	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2025	ev_set_priority (&w->timer, ev_priority (w));
		2026
		2027	#if EV_USE_INOTIFY
		2028	infy_init (EV_A);
		2029
		2030	if (fs_fd >= 0)
		2031	infy_add (EV_A_ w);
		2032	else
		2033	#endif
		2034	ev_timer_start (EV_A_ &w->timer);
		2035
		2036	ev_start (EV_A_ (W)w, 1);
		2037	}
		2038
		2039	void
		2040	ev_stat_stop (EV_P_ ev_stat *w)
		2041	{
		2042	clear_pending (EV_A_ (W)w);
		2043	if (expect_false (!ev_is_active (w)))
		2044	return;
		2045
		2046	#if EV_USE_INOTIFY
		2047	infy_del (EV_A_ w);
		2048	#endif
		2049	ev_timer_stop (EV_A_ &w->timer);
		2050
		2051	ev_stop (EV_A_ (W)w);
		2052	}
		2053	#endif
		2054
		2055	#if EV_IDLE_ENABLE
		2056	void
		2057	ev_idle_start (EV_P_ ev_idle *w)
		2058	{
		2059	if (expect_false (ev_is_active (w)))
		2060	return;
		2061
		2062	pri_adjust (EV_A_ (W)w);
		2063
		2064	{
		2065	int active = ++idlecnt [ABSPRI (w)];
		2066
		2067	++idleall;
		2068	ev_start (EV_A_ (W)w, active);
		2069
		2070	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2071	idles [ABSPRI (w)][active - 1] = w;
		2072	}
		2073	}
		2074
		2075	void
		2076	ev_idle_stop (EV_P_ ev_idle *w)
		2077	{
		2078	clear_pending (EV_A_ (W)w);
		2079	if (expect_false (!ev_is_active (w)))
		2080	return;
		2081
		2082	{
		2083	int active = ((W)w)->active;
		2084
		2085	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2086	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2087
		2088	ev_stop (EV_A_ (W)w);
		2089	--idleall;
		2090	}
		2091	}
		2092	#endif
		2093
		2094	void
		2095	ev_prepare_start (EV_P_ ev_prepare *w)
		2096	{
		2097	if (expect_false (ev_is_active (w)))
		2098	return;
		2099
		2100	ev_start (EV_A_ (W)w, ++preparecnt);
		2101	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2102	prepares [preparecnt - 1] = w;
		2103	}
		2104
		2105	void
		2106	ev_prepare_stop (EV_P_ ev_prepare *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	prepares [active - 1] = prepares [--preparecnt];
		2115	((W)prepares [active - 1])->active = active;
		2116	}
		2117
		2118	ev_stop (EV_A_ (W)w);
		2119	}
		2120
		2121	void
		2122	ev_check_start (EV_P_ ev_check *w)
		2123	{
		2124	if (expect_false (ev_is_active (w)))
		2125	return;
		2126
		2127	ev_start (EV_A_ (W)w, ++checkcnt);
		2128	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2129	checks [checkcnt - 1] = w;
		2130	}
		2131
		2132	void
		2133	ev_check_stop (EV_P_ ev_check *w)
		2134	{
		2135	clear_pending (EV_A_ (W)w);
		2136	if (expect_false (!ev_is_active (w)))
		2137	return;
		2138
		2139	{
		2140	int active = ((W)w)->active;
		2141	checks [active - 1] = checks [--checkcnt];
		2142	((W)checks [active - 1])->active = active;
		2143	}
		2144
		2145	ev_stop (EV_A_ (W)w);
		2146	}
		2147
		2148	#if EV_EMBED_ENABLE
		2149	void noinline
		2150	ev_embed_sweep (EV_P_ ev_embed *w)
		2151	{
		2152	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2153	}
		2154
		2155	static void
		2156	embed_cb (EV_P_ ev_io *io, int revents)
		2157	{
		2158	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2159
		2160	if (ev_cb (w))
		2161	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2162	else
		2163	ev_embed_sweep (loop, w);
		2164	}
		2165
		2166	void
		2167	ev_embed_start (EV_P_ ev_embed *w)
		2168	{
		2169	if (expect_false (ev_is_active (w)))
		2170	return;
		2171
		2172	{
		2173	struct ev_loop *loop = w->loop;
		2174	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2175	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2176	}
		2177
		2178	ev_set_priority (&w->io, ev_priority (w));
		2179	ev_io_start (EV_A_ &w->io);
		2180
		2181	ev_start (EV_A_ (W)w, 1);
		2182	}
		2183
		2184	void
		2185	ev_embed_stop (EV_P_ ev_embed *w)
		2186	{
		2187	clear_pending (EV_A_ (W)w);
		2188	if (expect_false (!ev_is_active (w)))
		2189	return;
		2190
		2191	ev_io_stop (EV_A_ &w->io);
		2192
		2193	ev_stop (EV_A_ (W)w);
		2194	}
		2195	#endif
		2196
		2197	#if EV_FORK_ENABLE
		2198	void
		2199	ev_fork_start (EV_P_ ev_fork *w)
		2200	{
		2201	if (expect_false (ev_is_active (w)))
		2202	return;
		2203
		2204	ev_start (EV_A_ (W)w, ++forkcnt);
		2205	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2206	forks [forkcnt - 1] = w;
		2207	}
		2208
		2209	void
		2210	ev_fork_stop (EV_P_ ev_fork *w)
		2211	{
		2212	clear_pending (EV_A_ (W)w);
		2213	if (expect_false (!ev_is_active (w)))
		2214	return;
		2215
		2216	{
		2217	int active = ((W)w)->active;
		2218	forks [active - 1] = forks [--forkcnt];
		2219	((W)forks [active - 1])->active = active;
		2220	}
		2221
		2222	ev_stop (EV_A_ (W)w);
		2223	}
		2224	#endif
		2225
1604	/*****************************************************************************/	2226	/*****************************************************************************/
1605		2227
1606	struct ev_once	2228	struct ev_once
1607	{	2229	{
1608	struct ev_io io;	2230	ev_io io;
1609	struct ev_timer to;	2231	ev_timer to;
1610	void (*cb)(int revents, void *arg);	2232	void (*cb)(int revents, void *arg);
1611	void *arg;	2233	void *arg;
1612	};	2234	};
1613		2235
1614	static void	2236	static void
…		…
1623		2245
1624	cb (revents, arg);	2246	cb (revents, arg);
1625	}	2247	}
1626		2248
1627	static void	2249	static void
1628	once_cb_io (EV_P_ struct ev_io *w, int revents)	2250	once_cb_io (EV_P_ ev_io *w, int revents)
1629	{	2251	{
1630	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2252	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1631	}	2253	}
1632		2254
1633	static void	2255	static void
1634	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2256	once_cb_to (EV_P_ ev_timer *w, int revents)
1635	{	2257	{
1636	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2258	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1637	}	2259	}
1638		2260
1639	void	2261	void

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