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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 1.192 by root, Fri Dec 21 07:55:29 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
…		…
144	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
145	# undef EV_USE_REALTIME	203	# undef EV_USE_REALTIME
146	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
147	#endif	205	#endif
148		206
		207	#if !EV_STAT_ENABLE
		208	# undef EV_USE_INOTIFY
		209	# define EV_USE_INOTIFY 0
		210	#endif
		211
		212	#if EV_USE_INOTIFY
		213	# include <sys/inotify.h>
		214	#endif
		215
149	#if EV_SELECT_IS_WINSOCKET	216	#if EV_SELECT_IS_WINSOCKET
150	# include <winsock.h>	217	# include <winsock.h>
151	#endif	218	#endif
152		219
153	/**/	220	/**/
154		221
		222	/*
		223	* This is used to avoid floating point rounding problems.
		224	* It is added to ev_rt_now when scheduling periodics
		225	* to ensure progress, time-wise, even when rounding
		226	* errors are against us.
		227	* This value is good at least till the year 4000.
		228	* Better solutions welcome.
		229	*/
		230	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
		231
155	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	232	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
156	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	233	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
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 */	234	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
159		235
160	#ifdef EV_H
161	# include EV_H
162	#else
163	# include "ev.h"
164	#endif
165
166	#if __GNUC__ >= 3	236	#if __GNUC__ >= 4
167	# define expect(expr,value) __builtin_expect ((expr),(value))	237	# define expect(expr,value) __builtin_expect ((expr),(value))
168	# define inline inline	238	# define noinline __attribute__ ((noinline))
169	#else	239	#else
170	# define expect(expr,value) (expr)	240	# define expect(expr,value) (expr)
171	# define inline static	241	# define noinline
		242	# if __STDC_VERSION__ < 199901L
		243	# define inline
		244	# endif
172	#endif	245	#endif
173		246
174	#define expect_false(expr) expect ((expr) != 0, 0)	247	#define expect_false(expr) expect ((expr) != 0, 0)
175	#define expect_true(expr) expect ((expr) != 0, 1)	248	#define expect_true(expr) expect ((expr) != 0, 1)
		249	#define inline_size static inline
		250
		251	#if EV_MINIMAL
		252	# define inline_speed static noinline
		253	#else
		254	# define inline_speed static inline
		255	#endif
176		256
177	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	257	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
178	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	258	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
179		259
180	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	260	#define EMPTY /* required for microsofts broken pseudo-c compiler */
181	#define EMPTY2(a,b) /* used to suppress some warnings */	261	#define EMPTY2(a,b) /* used to suppress some warnings */
182		262
183	typedef struct ev_watcher *W;	263	typedef ev_watcher *W;
184	typedef struct ev_watcher_list *WL;	264	typedef ev_watcher_list *WL;
185	typedef struct ev_watcher_time *WT;	265	typedef ev_watcher_time *WT;
186		266
187	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	267	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
188		268
189	#ifdef _WIN32	269	#ifdef _WIN32
190	# include "ev_win32.c"	270	# include "ev_win32.c"
…		…
192		272
193	/*****************************************************************************/	273	/*****************************************************************************/
194		274
195	static void (*syserr_cb)(const char *msg);	275	static void (*syserr_cb)(const char *msg);
196		276
		277	void
197	void ev_set_syserr_cb (void (*cb)(const char *msg))	278	ev_set_syserr_cb (void (*cb)(const char *msg))
198	{	279	{
199	syserr_cb = cb;	280	syserr_cb = cb;
200	}	281	}
201		282
202	static void	283	static void noinline
203	syserr (const char *msg)	284	syserr (const char *msg)
204	{	285	{
205	if (!msg)	286	if (!msg)
206	msg = "(libev) system error";	287	msg = "(libev) system error";
207		288
…		…
214	}	295	}
215	}	296	}
216		297
217	static void *(*alloc)(void *ptr, long size);	298	static void *(*alloc)(void *ptr, long size);
218		299
		300	void
219	void ev_set_allocator (void *(*cb)(void *ptr, long size))	301	ev_set_allocator (void *(*cb)(void *ptr, long size))
220	{	302	{
221	alloc = cb;	303	alloc = cb;
222	}	304	}
223		305
224	static void *	306	inline_speed void *
225	ev_realloc (void *ptr, long size)	307	ev_realloc (void *ptr, long size)
226	{	308	{
227	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	309	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
228		310
229	if (!ptr && size)	311	if (!ptr && size)
…		…
253	typedef struct	335	typedef struct
254	{	336	{
255	W w;	337	W w;
256	int events;	338	int events;
257	} ANPENDING;	339	} ANPENDING;
		340
		341	#if EV_USE_INOTIFY
		342	typedef struct
		343	{
		344	WL head;
		345	} ANFS;
		346	#endif
258		347
259	#if EV_MULTIPLICITY	348	#if EV_MULTIPLICITY
260		349
261	struct ev_loop	350	struct ev_loop
262	{	351	{
…		…
296	gettimeofday (&tv, 0);	385	gettimeofday (&tv, 0);
297	return tv.tv_sec + tv.tv_usec * 1e-6;	386	return tv.tv_sec + tv.tv_usec * 1e-6;
298	#endif	387	#endif
299	}	388	}
300		389
301	inline ev_tstamp	390	ev_tstamp inline_size
302	get_clock (void)	391	get_clock (void)
303	{	392	{
304	#if EV_USE_MONOTONIC	393	#if EV_USE_MONOTONIC
305	if (expect_true (have_monotonic))	394	if (expect_true (have_monotonic))
306	{	395	{
…		…
319	{	408	{
320	return ev_rt_now;	409	return ev_rt_now;
321	}	410	}
322	#endif	411	#endif
323		412
324	#define array_roundsize(type,n) (((n) | 4) & ~3)	413	int inline_size
		414	array_nextsize (int elem, int cur, int cnt)
		415	{
		416	int ncur = cur + 1;
		417
		418	do
		419	ncur <<= 1;
		420	while (cnt > ncur);
		421
		422	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		423	if (elem * ncur > 4096)
		424	{
		425	ncur *= elem;
		426	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		427	ncur = ncur - sizeof (void *) * 4;
		428	ncur /= elem;
		429	}
		430
		431	return ncur;
		432	}
		433
		434	static noinline void *
		435	array_realloc (int elem, void *base, int *cur, int cnt)
		436	{
		437	*cur = array_nextsize (elem, *cur, cnt);
		438	return ev_realloc (base, elem * *cur);
		439	}
325		440
326	#define array_needsize(type,base,cur,cnt,init) \	441	#define array_needsize(type,base,cur,cnt,init) \
327	if (expect_false ((cnt) > cur)) \	442	if (expect_false ((cnt) > (cur))) \
328	{ \	443	{ \
329	int newcnt = cur; \	444	int ocur_ = (cur); \
330	do \	445	(base) = (type *)array_realloc \
331	{ \	446	(sizeof (type), (base), &(cur), (cnt)); \
332	newcnt = array_roundsize (type, newcnt << 1); \	447	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	}	448	}
340		449
		450	#if 0
341	#define array_slim(type,stem) \	451	#define array_slim(type,stem) \
342	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	452	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
343	{ \	453	{ \
344	stem ## max = array_roundsize (stem ## cnt >> 1); \	454	stem ## max = array_roundsize (stem ## cnt >> 1); \
345	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	455	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
346	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	456	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
347	}	457	}
		458	#endif
348		459
349	#define array_free(stem, idx) \	460	#define array_free(stem, idx) \
350	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	461	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
351		462
352	/*****************************************************************************/	463	/*****************************************************************************/
353		464
354	static void	465	void noinline
		466	ev_feed_event (EV_P_ void *w, int revents)
		467	{
		468	W w_ = (W)w;
		469	int pri = ABSPRI (w_);
		470
		471	if (expect_false (w_->pending))
		472	pendings [pri][w_->pending - 1].events |= revents;
		473	else
		474	{
		475	w_->pending = ++pendingcnt [pri];
		476	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		477	pendings [pri][w_->pending - 1].w = w_;
		478	pendings [pri][w_->pending - 1].events = revents;
		479	}
		480	}
		481
		482	void inline_speed
		483	queue_events (EV_P_ W *events, int eventcnt, int type)
		484	{
		485	int i;
		486
		487	for (i = 0; i < eventcnt; ++i)
		488	ev_feed_event (EV_A_ events [i], type);
		489	}
		490
		491	/*****************************************************************************/
		492
		493	void inline_size
355	anfds_init (ANFD *base, int count)	494	anfds_init (ANFD *base, int count)
356	{	495	{
357	while (count--)	496	while (count--)
358	{	497	{
359	base->head = 0;	498	base->head = 0;
…		…
362		501
363	++base;	502	++base;
364	}	503	}
365	}	504	}
366		505
367	void	506	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)	507	fd_event (EV_P_ int fd, int revents)
395	{	508	{
396	ANFD *anfd = anfds + fd;	509	ANFD *anfd = anfds + fd;
397	struct ev_io *w;	510	ev_io *w;
398		511
399	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	512	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
400	{	513	{
401	int ev = w->events & revents;	514	int ev = w->events & revents;
402		515
403	if (ev)	516	if (ev)
404	ev_feed_event (EV_A_ (W)w, ev);	517	ev_feed_event (EV_A_ (W)w, ev);
…		…
406	}	519	}
407		520
408	void	521	void
409	ev_feed_fd_event (EV_P_ int fd, int revents)	522	ev_feed_fd_event (EV_P_ int fd, int revents)
410	{	523	{
		524	if (fd >= 0 && fd < anfdmax)
411	fd_event (EV_A_ fd, revents);	525	fd_event (EV_A_ fd, revents);
412	}	526	}
413		527
414	/*****************************************************************************/	528	void inline_size
415
416	static void
417	fd_reify (EV_P)	529	fd_reify (EV_P)
418	{	530	{
419	int i;	531	int i;
420		532
421	for (i = 0; i < fdchangecnt; ++i)	533	for (i = 0; i < fdchangecnt; ++i)
422	{	534	{
423	int fd = fdchanges [i];	535	int fd = fdchanges [i];
424	ANFD *anfd = anfds + fd;	536	ANFD *anfd = anfds + fd;
425	struct ev_io *w;	537	ev_io *w;
426		538
427	int events = 0;	539	unsigned char events = 0;
428		540
429	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	541	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
430	events |= w->events;	542	events |= (unsigned char)w->events;
431		543
432	#if EV_SELECT_IS_WINSOCKET	544	#if EV_SELECT_IS_WINSOCKET
433	if (events)	545	if (events)
434	{	546	{
435	unsigned long argp;	547	unsigned long argp;
436	anfd->handle = _get_osfhandle (fd);	548	anfd->handle = _get_osfhandle (fd);
437	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	549	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
438	}	550	}
439	#endif	551	#endif
440		552
		553	{
		554	unsigned char o_events = anfd->events;
		555	unsigned char o_reify = anfd->reify;
		556
441	anfd->reify = 0;	557	anfd->reify = 0;
442
443	method_modify (EV_A_ fd, anfd->events, events);
444	anfd->events = events;	558	anfd->events = events;
		559
		560	if (o_events != events || o_reify & EV_IOFDSET)
		561	backend_modify (EV_A_ fd, o_events, events);
		562	}
445	}	563	}
446		564
447	fdchangecnt = 0;	565	fdchangecnt = 0;
448	}	566	}
449		567
450	static void	568	void inline_size
451	fd_change (EV_P_ int fd)	569	fd_change (EV_P_ int fd, int flags)
452	{	570	{
453	if (anfds [fd].reify)	571	unsigned char reify = anfds [fd].reify;
454	return;
455
456	anfds [fd].reify = 1;	572	anfds [fd].reify |= flags;
457		573
		574	if (expect_true (!reify))
		575	{
458	++fdchangecnt;	576	++fdchangecnt;
459	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	577	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
460	fdchanges [fdchangecnt - 1] = fd;	578	fdchanges [fdchangecnt - 1] = fd;
		579	}
461	}	580	}
462		581
463	static void	582	void inline_speed
464	fd_kill (EV_P_ int fd)	583	fd_kill (EV_P_ int fd)
465	{	584	{
466	struct ev_io *w;	585	ev_io *w;
467		586
468	while ((w = (struct ev_io *)anfds [fd].head))	587	while ((w = (ev_io *)anfds [fd].head))
469	{	588	{
470	ev_io_stop (EV_A_ w);	589	ev_io_stop (EV_A_ w);
471	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	590	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
472	}	591	}
473	}	592	}
474		593
475	static int	594	int inline_size
476	fd_valid (int fd)	595	fd_valid (int fd)
477	{	596	{
478	#ifdef _WIN32	597	#ifdef _WIN32
479	return _get_osfhandle (fd) != -1;	598	return _get_osfhandle (fd) != -1;
480	#else	599	#else
481	return fcntl (fd, F_GETFD) != -1;	600	return fcntl (fd, F_GETFD) != -1;
482	#endif	601	#endif
483	}	602	}
484		603
485	/* called on EBADF to verify fds */	604	/* called on EBADF to verify fds */
486	static void	605	static void noinline
487	fd_ebadf (EV_P)	606	fd_ebadf (EV_P)
488	{	607	{
489	int fd;	608	int fd;
490		609
491	for (fd = 0; fd < anfdmax; ++fd)	610	for (fd = 0; fd < anfdmax; ++fd)
…		…
493	if (!fd_valid (fd) == -1 && errno == EBADF)	612	if (!fd_valid (fd) == -1 && errno == EBADF)
494	fd_kill (EV_A_ fd);	613	fd_kill (EV_A_ fd);
495	}	614	}
496		615
497	/* called on ENOMEM in select/poll to kill some fds and retry */	616	/* called on ENOMEM in select/poll to kill some fds and retry */
498	static void	617	static void noinline
499	fd_enomem (EV_P)	618	fd_enomem (EV_P)
500	{	619	{
501	int fd;	620	int fd;
502		621
503	for (fd = anfdmax; fd--; )	622	for (fd = anfdmax; fd--; )
…		…
506	fd_kill (EV_A_ fd);	625	fd_kill (EV_A_ fd);
507	return;	626	return;
508	}	627	}
509	}	628	}
510		629
511	/* usually called after fork if method needs to re-arm all fds from scratch */	630	/* usually called after fork if backend needs to re-arm all fds from scratch */
512	static void	631	static void noinline
513	fd_rearm_all (EV_P)	632	fd_rearm_all (EV_P)
514	{	633	{
515	int fd;	634	int fd;
516		635
517	/* this should be highly optimised to not do anything but set a flag */
518	for (fd = 0; fd < anfdmax; ++fd)	636	for (fd = 0; fd < anfdmax; ++fd)
519	if (anfds [fd].events)	637	if (anfds [fd].events)
520	{	638	{
521	anfds [fd].events = 0;	639	anfds [fd].events = 0;
522	fd_change (EV_A_ fd);	640	fd_change (EV_A_ fd, EV_IOFDSET | 1);
523	}	641	}
524	}	642	}
525		643
526	/*****************************************************************************/	644	/*****************************************************************************/
527		645
528	static void	646	void inline_speed
529	upheap (WT *heap, int k)	647	upheap (WT *heap, int k)
530	{	648	{
531	WT w = heap [k];	649	WT w = heap [k];
532		650
533	while (k && heap [k >> 1]->at > w->at)	651	while (k)
534	{	652	{
		653	int p = (k - 1) >> 1;
		654
		655	if (heap [p]->at <= w->at)
		656	break;
		657
535	heap [k] = heap [k >> 1];	658	heap [k] = heap [p];
536	((W)heap [k])->active = k + 1;	659	((W)heap [k])->active = k + 1;
537	k >>= 1;	660	k = p;
538	}	661	}
539		662
540	heap [k] = w;	663	heap [k] = w;
541	((W)heap [k])->active = k + 1;	664	((W)heap [k])->active = k + 1;
542
543	}	665	}
544		666
545	static void	667	void inline_speed
546	downheap (WT *heap, int N, int k)	668	downheap (WT *heap, int N, int k)
547	{	669	{
548	WT w = heap [k];	670	WT w = heap [k];
549		671
550	while (k < (N >> 1))	672	for (;;)
551	{	673	{
552	int j = k << 1;	674	int c = (k << 1) + 1;
553		675
554	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	676	if (c >= N)
555	++j;
556
557	if (w->at <= heap [j]->at)
558	break;	677	break;
559		678
		679	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		680	? 1 : 0;
		681
		682	if (w->at <= heap [c]->at)
		683	break;
		684
560	heap [k] = heap [j];	685	heap [k] = heap [c];
561	((W)heap [k])->active = k + 1;	686	((W)heap [k])->active = k + 1;
		687
562	k = j;	688	k = c;
563	}	689	}
564		690
565	heap [k] = w;	691	heap [k] = w;
566	((W)heap [k])->active = k + 1;	692	((W)heap [k])->active = k + 1;
567	}	693	}
568		694
569	inline void	695	void inline_size
570	adjustheap (WT *heap, int N, int k)	696	adjustheap (WT *heap, int N, int k)
571	{	697	{
572	upheap (heap, k);	698	upheap (heap, k);
573	downheap (heap, N, k);	699	downheap (heap, N, k);
574	}	700	}
…		…
584	static ANSIG *signals;	710	static ANSIG *signals;
585	static int signalmax;	711	static int signalmax;
586		712
587	static int sigpipe [2];	713	static int sigpipe [2];
588	static sig_atomic_t volatile gotsig;	714	static sig_atomic_t volatile gotsig;
589	static struct ev_io sigev;	715	static ev_io sigev;
590		716
591	static void	717	void inline_size
592	signals_init (ANSIG *base, int count)	718	signals_init (ANSIG *base, int count)
593	{	719	{
594	while (count--)	720	while (count--)
595	{	721	{
596	base->head = 0;	722	base->head = 0;
…		…
616	write (sigpipe [1], &signum, 1);	742	write (sigpipe [1], &signum, 1);
617	errno = old_errno;	743	errno = old_errno;
618	}	744	}
619	}	745	}
620		746
621	void	747	void noinline
622	ev_feed_signal_event (EV_P_ int signum)	748	ev_feed_signal_event (EV_P_ int signum)
623	{	749	{
624	WL w;	750	WL w;
625		751
626	#if EV_MULTIPLICITY	752	#if EV_MULTIPLICITY
…		…
637	for (w = signals [signum].head; w; w = w->next)	763	for (w = signals [signum].head; w; w = w->next)
638	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	764	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
639	}	765	}
640		766
641	static void	767	static void
642	sigcb (EV_P_ struct ev_io *iow, int revents)	768	sigcb (EV_P_ ev_io *iow, int revents)
643	{	769	{
644	int signum;	770	int signum;
645		771
646	read (sigpipe [0], &revents, 1);	772	read (sigpipe [0], &revents, 1);
647	gotsig = 0;	773	gotsig = 0;
…		…
649	for (signum = signalmax; signum--; )	775	for (signum = signalmax; signum--; )
650	if (signals [signum].gotsig)	776	if (signals [signum].gotsig)
651	ev_feed_signal_event (EV_A_ signum + 1);	777	ev_feed_signal_event (EV_A_ signum + 1);
652	}	778	}
653		779
654	inline void	780	void inline_speed
655	fd_intern (int fd)	781	fd_intern (int fd)
656	{	782	{
657	#ifdef _WIN32	783	#ifdef _WIN32
658	int arg = 1;	784	int arg = 1;
659	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	785	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
661	fcntl (fd, F_SETFD, FD_CLOEXEC);	787	fcntl (fd, F_SETFD, FD_CLOEXEC);
662	fcntl (fd, F_SETFL, O_NONBLOCK);	788	fcntl (fd, F_SETFL, O_NONBLOCK);
663	#endif	789	#endif
664	}	790	}
665		791
666	static void	792	static void noinline
667	siginit (EV_P)	793	siginit (EV_P)
668	{	794	{
669	fd_intern (sigpipe [0]);	795	fd_intern (sigpipe [0]);
670	fd_intern (sigpipe [1]);	796	fd_intern (sigpipe [1]);
671		797
…		…
674	ev_unref (EV_A); /* child watcher should not keep loop alive */	800	ev_unref (EV_A); /* child watcher should not keep loop alive */
675	}	801	}
676		802
677	/*****************************************************************************/	803	/*****************************************************************************/
678		804
679	static struct ev_child *childs [PID_HASHSIZE];	805	static WL childs [EV_PID_HASHSIZE];
680		806
681	#ifndef _WIN32	807	#ifndef _WIN32
682		808
683	static struct ev_signal childev;	809	static ev_signal childev;
		810
		811	void inline_speed
		812	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		813	{
		814	ev_child *w;
		815
		816	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		817	if (w->pid == pid || !w->pid)
		818	{
		819	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		820	w->rpid = pid;
		821	w->rstatus = status;
		822	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		823	}
		824	}
684		825
685	#ifndef WCONTINUED	826	#ifndef WCONTINUED
686	# define WCONTINUED 0	827	# define WCONTINUED 0
687	#endif	828	#endif
688		829
689	static void	830	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)	831	childcb (EV_P_ ev_signal *sw, int revents)
706	{	832	{
707	int pid, status;	833	int pid, status;
708		834
		835	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
709	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	836	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
710	{	837	if (!WCONTINUED
		838	|| errno != EINVAL
		839	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		840	return;
		841
711	/* make sure we are called again until all childs have been reaped */	842	/* make sure we are called again until all childs have been reaped */
		843	/* we need to do it this way so that the callback gets called before we continue */
712	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	844	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
713		845
714	child_reap (EV_A_ sw, pid, pid, status);	846	child_reap (EV_A_ sw, pid, pid, status);
		847	if (EV_PID_HASHSIZE > 1)
715	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	848	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
716	}
717	}	849	}
718		850
719	#endif	851	#endif
720		852
721	/*****************************************************************************/	853	/*****************************************************************************/
…		…
747	{	879	{
748	return EV_VERSION_MINOR;	880	return EV_VERSION_MINOR;
749	}	881	}
750		882
751	/* return true if we are running with elevated privileges and should ignore env variables */	883	/* return true if we are running with elevated privileges and should ignore env variables */
752	static int	884	int inline_size
753	enable_secure (void)	885	enable_secure (void)
754	{	886	{
755	#ifdef _WIN32	887	#ifdef _WIN32
756	return 0;	888	return 0;
757	#else	889	#else
…		…
759	|| getgid () != getegid ();	891	|| getgid () != getegid ();
760	#endif	892	#endif
761	}	893	}
762		894
763	unsigned int	895	unsigned int
764	ev_method (EV_P)	896	ev_supported_backends (void)
765	{	897	{
766	return method;	898	unsigned int flags = 0;
767	}
768		899
769	static void	900	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		901	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		902	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		903	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		904	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		905
		906	return flags;
		907	}
		908
		909	unsigned int
		910	ev_recommended_backends (void)
		911	{
		912	unsigned int flags = ev_supported_backends ();
		913
		914	#ifndef __NetBSD__
		915	/* kqueue is borked on everything but netbsd apparently */
		916	/* it usually doesn't work correctly on anything but sockets and pipes */
		917	flags &= ~EVBACKEND_KQUEUE;
		918	#endif
		919	#ifdef __APPLE__
		920	// flags &= ~EVBACKEND_KQUEUE; for documentation
		921	flags &= ~EVBACKEND_POLL;
		922	#endif
		923
		924	return flags;
		925	}
		926
		927	unsigned int
		928	ev_embeddable_backends (void)
		929	{
		930	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		931	return EVBACKEND_KQUEUE
		932	| EVBACKEND_PORT;
		933	}
		934
		935	unsigned int
		936	ev_backend (EV_P)
		937	{
		938	return backend;
		939	}
		940
		941	unsigned int
		942	ev_loop_count (EV_P)
		943	{
		944	return loop_count;
		945	}
		946
		947	static void noinline
770	loop_init (EV_P_ unsigned int flags)	948	loop_init (EV_P_ unsigned int flags)
771	{	949	{
772	if (!method)	950	if (!backend)
773	{	951	{
774	#if EV_USE_MONOTONIC	952	#if EV_USE_MONOTONIC
775	{	953	{
776	struct timespec ts;	954	struct timespec ts;
777	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	955	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
782	ev_rt_now = ev_time ();	960	ev_rt_now = ev_time ();
783	mn_now = get_clock ();	961	mn_now = get_clock ();
784	now_floor = mn_now;	962	now_floor = mn_now;
785	rtmn_diff = ev_rt_now - mn_now;	963	rtmn_diff = ev_rt_now - mn_now;
786		964
787	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))	965	/* pid check not overridable via env */
		966	#ifndef _WIN32
		967	if (flags & EVFLAG_FORKCHECK)
		968	curpid = getpid ();
		969	#endif
		970
		971	if (!(flags & EVFLAG_NOENV)
		972	&& !enable_secure ()
		973	&& getenv ("LIBEV_FLAGS"))
788	flags = atoi (getenv ("LIBEV_FLAGS"));	974	flags = atoi (getenv ("LIBEV_FLAGS"));
789		975
790	if (!(flags & 0x0000ffff))	976	if (!(flags & 0x0000ffffUL))
791	flags |= 0x0000ffff;	977	flags |= ev_recommended_backends ();
792		978
793	method = 0;	979	backend = 0;
		980	backend_fd = -1;
		981	#if EV_USE_INOTIFY
		982	fs_fd = -2;
		983	#endif
		984
794	#if EV_USE_PORT	985	#if EV_USE_PORT
795	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);	986	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
796	#endif	987	#endif
797	#if EV_USE_KQUEUE	988	#if EV_USE_KQUEUE
798	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);	989	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
799	#endif	990	#endif
800	#if EV_USE_EPOLL	991	#if EV_USE_EPOLL
801	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);	992	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
802	#endif	993	#endif
803	#if EV_USE_POLL	994	#if EV_USE_POLL
804	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);	995	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
805	#endif	996	#endif
806	#if EV_USE_SELECT	997	#if EV_USE_SELECT
807	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);	998	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
808	#endif	999	#endif
809		1000
810	ev_init (&sigev, sigcb);	1001	ev_init (&sigev, sigcb);
811	ev_set_priority (&sigev, EV_MAXPRI);	1002	ev_set_priority (&sigev, EV_MAXPRI);
812	}	1003	}
813	}	1004	}
814		1005
815	void	1006	static void noinline
816	loop_destroy (EV_P)	1007	loop_destroy (EV_P)
817	{	1008	{
818	int i;	1009	int i;
819		1010
		1011	#if EV_USE_INOTIFY
		1012	if (fs_fd >= 0)
		1013	close (fs_fd);
		1014	#endif
		1015
		1016	if (backend_fd >= 0)
		1017	close (backend_fd);
		1018
820	#if EV_USE_PORT	1019	#if EV_USE_PORT
821	if (method == EVMETHOD_PORT ) port_destroy (EV_A);	1020	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
822	#endif	1021	#endif
823	#if EV_USE_KQUEUE	1022	#if EV_USE_KQUEUE
824	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1023	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
825	#endif	1024	#endif
826	#if EV_USE_EPOLL	1025	#if EV_USE_EPOLL
827	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1026	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
828	#endif	1027	#endif
829	#if EV_USE_POLL	1028	#if EV_USE_POLL
830	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1029	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
831	#endif	1030	#endif
832	#if EV_USE_SELECT	1031	#if EV_USE_SELECT
833	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1032	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
834	#endif	1033	#endif
835		1034
836	for (i = NUMPRI; i--; )	1035	for (i = NUMPRI; i--; )
		1036	{
837	array_free (pending, [i]);	1037	array_free (pending, [i]);
		1038	#if EV_IDLE_ENABLE
		1039	array_free (idle, [i]);
		1040	#endif
		1041	}
		1042
		1043	ev_free (anfds); anfdmax = 0;
838		1044
839	/* have to use the microsoft-never-gets-it-right macro */	1045	/* have to use the microsoft-never-gets-it-right macro */
840	array_free (fdchange, EMPTY0);	1046	array_free (fdchange, EMPTY);
841	array_free (timer, EMPTY0);	1047	array_free (timer, EMPTY);
842	#if EV_PERIODICS	1048	#if EV_PERIODIC_ENABLE
843	array_free (periodic, EMPTY0);	1049	array_free (periodic, EMPTY);
844	#endif	1050	#endif
		1051	#if EV_FORK_ENABLE
845	array_free (idle, EMPTY0);	1052	array_free (fork, EMPTY);
		1053	#endif
846	array_free (prepare, EMPTY0);	1054	array_free (prepare, EMPTY);
847	array_free (check, EMPTY0);	1055	array_free (check, EMPTY);
848		1056
849	method = 0;	1057	backend = 0;
850	}	1058	}
851		1059
852	static void	1060	void inline_size infy_fork (EV_P);
		1061
		1062	void inline_size
853	loop_fork (EV_P)	1063	loop_fork (EV_P)
854	{	1064	{
855	#if EV_USE_PORT	1065	#if EV_USE_PORT
856	if (method == EVMETHOD_PORT ) port_fork (EV_A);	1066	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
857	#endif	1067	#endif
858	#if EV_USE_KQUEUE	1068	#if EV_USE_KQUEUE
859	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1069	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
860	#endif	1070	#endif
861	#if EV_USE_EPOLL	1071	#if EV_USE_EPOLL
862	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1072	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1073	#endif
		1074	#if EV_USE_INOTIFY
		1075	infy_fork (EV_A);
863	#endif	1076	#endif
864		1077
865	if (ev_is_active (&sigev))	1078	if (ev_is_active (&sigev))
866	{	1079	{
867	/* default loop */	1080	/* default loop */
…		…
888		1101
889	memset (loop, 0, sizeof (struct ev_loop));	1102	memset (loop, 0, sizeof (struct ev_loop));
890		1103
891	loop_init (EV_A_ flags);	1104	loop_init (EV_A_ flags);
892		1105
893	if (ev_method (EV_A))	1106	if (ev_backend (EV_A))
894	return loop;	1107	return loop;
895		1108
896	return 0;	1109	return 0;
897	}	1110	}
898		1111
…		…
911		1124
912	#endif	1125	#endif
913		1126
914	#if EV_MULTIPLICITY	1127	#if EV_MULTIPLICITY
915	struct ev_loop *	1128	struct ev_loop *
916	ev_default_loop_ (unsigned int flags)	1129	ev_default_loop_init (unsigned int flags)
917	#else	1130	#else
918	int	1131	int
919	ev_default_loop (unsigned int flags)	1132	ev_default_loop (unsigned int flags)
920	#endif	1133	#endif
921	{	1134	{
…		…
931	ev_default_loop_ptr = 1;	1144	ev_default_loop_ptr = 1;
932	#endif	1145	#endif
933		1146
934	loop_init (EV_A_ flags);	1147	loop_init (EV_A_ flags);
935		1148
936	if (ev_method (EV_A))	1149	if (ev_backend (EV_A))
937	{	1150	{
938	siginit (EV_A);	1151	siginit (EV_A);
939		1152
940	#ifndef _WIN32	1153	#ifndef _WIN32
941	ev_signal_init (&childev, childcb, SIGCHLD);	1154	ev_signal_init (&childev, childcb, SIGCHLD);
…		…
977	{	1190	{
978	#if EV_MULTIPLICITY	1191	#if EV_MULTIPLICITY
979	struct ev_loop *loop = ev_default_loop_ptr;	1192	struct ev_loop *loop = ev_default_loop_ptr;
980	#endif	1193	#endif
981		1194
982	if (method)	1195	if (backend)
983	postfork = 1;	1196	postfork = 1;
984	}	1197	}
985		1198
986	/*****************************************************************************/	1199	/*****************************************************************************/
987		1200
988	static int	1201	void
989	any_pending (EV_P)	1202	ev_invoke (EV_P_ void *w, int revents)
990	{	1203	{
991	int pri;	1204	EV_CB_INVOKE ((W)w, revents);
992
993	for (pri = NUMPRI; pri--; )
994	if (pendingcnt [pri])
995	return 1;
996
997	return 0;
998	}	1205	}
999		1206
1000	static void	1207	void inline_speed
1001	call_pending (EV_P)	1208	call_pending (EV_P)
1002	{	1209	{
1003	int pri;	1210	int pri;
1004		1211
1005	for (pri = NUMPRI; pri--; )	1212	for (pri = NUMPRI; pri--; )
1006	while (pendingcnt [pri])	1213	while (pendingcnt [pri])
1007	{	1214	{
1008	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1215	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1009		1216
1010	if (p->w)	1217	if (expect_true (p->w))
1011	{	1218	{
		1219	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1220
1012	p->w->pending = 0;	1221	p->w->pending = 0;
1013	EV_CB_INVOKE (p->w, p->events);	1222	EV_CB_INVOKE (p->w, p->events);
1014	}	1223	}
1015	}	1224	}
1016	}	1225	}
1017		1226
1018	static void	1227	void inline_size
1019	timers_reify (EV_P)	1228	timers_reify (EV_P)
1020	{	1229	{
1021	while (timercnt && ((WT)timers [0])->at <= mn_now)	1230	while (timercnt && ((WT)timers [0])->at <= mn_now)
1022	{	1231	{
1023	struct ev_timer *w = timers [0];	1232	ev_timer *w = (ev_timer *)timers [0];
1024		1233
1025	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1234	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1026		1235
1027	/* first reschedule or stop timer */	1236	/* first reschedule or stop timer */
1028	if (w->repeat)	1237	if (w->repeat)
1029	{	1238	{
1030	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1239	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1031		1240
1032	((WT)w)->at += w->repeat;	1241	((WT)w)->at += w->repeat;
1033	if (((WT)w)->at < mn_now)	1242	if (((WT)w)->at < mn_now)
1034	((WT)w)->at = mn_now;	1243	((WT)w)->at = mn_now;
1035		1244
1036	downheap ((WT *)timers, timercnt, 0);	1245	downheap (timers, timercnt, 0);
1037	}	1246	}
1038	else	1247	else
1039	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1248	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1040		1249
1041	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1250	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1042	}	1251	}
1043	}	1252	}
1044		1253
1045	#if EV_PERIODICS	1254	#if EV_PERIODIC_ENABLE
1046	static void	1255	void inline_size
1047	periodics_reify (EV_P)	1256	periodics_reify (EV_P)
1048	{	1257	{
1049	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1258	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1050	{	1259	{
1051	struct ev_periodic *w = periodics [0];	1260	ev_periodic *w = (ev_periodic *)periodics [0];
1052		1261
1053	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1262	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1054		1263
1055	/* first reschedule or stop timer */	1264	/* first reschedule or stop timer */
1056	if (w->reschedule_cb)	1265	if (w->reschedule_cb)
1057	{	1266	{
1058	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1267	((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));	1268	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1060	downheap ((WT *)periodics, periodiccnt, 0);	1269	downheap (periodics, periodiccnt, 0);
1061	}	1270	}
1062	else if (w->interval)	1271	else if (w->interval)
1063	{	1272	{
1064	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1273	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1274	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));	1275	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);	1276	downheap (periodics, periodiccnt, 0);
1067	}	1277	}
1068	else	1278	else
1069	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1279	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1070		1280
1071	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1281	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1072	}	1282	}
1073	}	1283	}
1074		1284
1075	static void	1285	static void noinline
1076	periodics_reschedule (EV_P)	1286	periodics_reschedule (EV_P)
1077	{	1287	{
1078	int i;	1288	int i;
1079		1289
1080	/* adjust periodics after time jump */	1290	/* adjust periodics after time jump */
1081	for (i = 0; i < periodiccnt; ++i)	1291	for (i = 0; i < periodiccnt; ++i)
1082	{	1292	{
1083	struct ev_periodic *w = periodics [i];	1293	ev_periodic *w = (ev_periodic *)periodics [i];
1084		1294
1085	if (w->reschedule_cb)	1295	if (w->reschedule_cb)
1086	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1296	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1087	else if (w->interval)	1297	else if (w->interval)
1088	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1298	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1089	}	1299	}
1090		1300
1091	/* now rebuild the heap */	1301	/* now rebuild the heap */
1092	for (i = periodiccnt >> 1; i--; )	1302	for (i = periodiccnt >> 1; i--; )
1093	downheap ((WT *)periodics, periodiccnt, i);	1303	downheap (periodics, periodiccnt, i);
1094	}	1304	}
1095	#endif	1305	#endif
1096		1306
1097	inline int	1307	#if EV_IDLE_ENABLE
1098	time_update_monotonic (EV_P)	1308	void inline_size
		1309	idle_reify (EV_P)
1099	{	1310	{
		1311	if (expect_false (idleall))
		1312	{
		1313	int pri;
		1314
		1315	for (pri = NUMPRI; pri--; )
		1316	{
		1317	if (pendingcnt [pri])
		1318	break;
		1319
		1320	if (idlecnt [pri])
		1321	{
		1322	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1323	break;
		1324	}
		1325	}
		1326	}
		1327	}
		1328	#endif
		1329
		1330	void inline_speed
		1331	time_update (EV_P_ ev_tstamp max_block)
		1332	{
		1333	int i;
		1334
		1335	#if EV_USE_MONOTONIC
		1336	if (expect_true (have_monotonic))
		1337	{
		1338	ev_tstamp odiff = rtmn_diff;
		1339
1100	mn_now = get_clock ();	1340	mn_now = get_clock ();
1101		1341
		1342	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1343	/* interpolate in the meantime */
1102	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1344	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1103	{	1345	{
1104	ev_rt_now = rtmn_diff + mn_now;	1346	ev_rt_now = rtmn_diff + mn_now;
1105	return 0;	1347	return;
1106	}	1348	}
1107	else	1349
1108	{
1109	now_floor = mn_now;	1350	now_floor = mn_now;
1110	ev_rt_now = ev_time ();	1351	ev_rt_now = ev_time ();
1111	return 1;
1112	}
1113	}
1114		1352
1115	static void	1353	/* loop a few times, before making important decisions.
1116	time_update (EV_P)	1354	* on the choice of "4": one iteration isn't enough,
1117	{	1355	* in case we get preempted during the calls to
1118	int i;	1356	* ev_time and get_clock. a second call is almost guaranteed
1119		1357	* to succeed in that case, though. and looping a few more times
1120	#if EV_USE_MONOTONIC	1358	* doesn't hurt either as we only do this on time-jumps or
1121	if (expect_true (have_monotonic))	1359	* in the unlikely event of having been preempted here.
1122	{	1360	*/
1123	if (time_update_monotonic (EV_A))	1361	for (i = 4; --i; )
1124	{	1362	{
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;	1363	rtmn_diff = ev_rt_now - mn_now;
1130		1364
1131	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1365	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1132	return; /* all is well */	1366	return; /* all is well */
1133		1367
1134	ev_rt_now = ev_time ();	1368	ev_rt_now = ev_time ();
1135	mn_now = get_clock ();	1369	mn_now = get_clock ();
1136	now_floor = mn_now;	1370	now_floor = mn_now;
1137	}	1371	}
1138		1372
1139	# if EV_PERIODICS	1373	# if EV_PERIODIC_ENABLE
		1374	periodics_reschedule (EV_A);
		1375	# endif
		1376	/* no timer adjustment, as the monotonic clock doesn't jump */
		1377	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1378	}
		1379	else
		1380	#endif
		1381	{
		1382	ev_rt_now = ev_time ();
		1383
		1384	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1385	{
		1386	#if EV_PERIODIC_ENABLE
1140	periodics_reschedule (EV_A);	1387	periodics_reschedule (EV_A);
1141	# endif	1388	#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 */	1389	/* adjust timers. this is easy, as the offset is the same for all of them */
1158	for (i = 0; i < timercnt; ++i)	1390	for (i = 0; i < timercnt; ++i)
1159	((WT)timers [i])->at += ev_rt_now - mn_now;	1391	((WT)timers [i])->at += ev_rt_now - mn_now;
1160	}	1392	}
1161		1393
1162	mn_now = ev_rt_now;	1394	mn_now = ev_rt_now;
…		…
1178	static int loop_done;	1410	static int loop_done;
1179		1411
1180	void	1412	void
1181	ev_loop (EV_P_ int flags)	1413	ev_loop (EV_P_ int flags)
1182	{	1414	{
1183	double block;
1184	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1415	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1416	? EVUNLOOP_ONE
		1417	: EVUNLOOP_CANCEL;
1185		1418
1186	while (activecnt)	1419	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1420
		1421	do
1187	{	1422	{
		1423	#ifndef _WIN32
		1424	if (expect_false (curpid)) /* penalise the forking check even more */
		1425	if (expect_false (getpid () != curpid))
		1426	{
		1427	curpid = getpid ();
		1428	postfork = 1;
		1429	}
		1430	#endif
		1431
		1432	#if EV_FORK_ENABLE
		1433	/* we might have forked, so queue fork handlers */
		1434	if (expect_false (postfork))
		1435	if (forkcnt)
		1436	{
		1437	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1438	call_pending (EV_A);
		1439	}
		1440	#endif
		1441
1188	/* queue check watchers (and execute them) */	1442	/* queue prepare watchers (and execute them) */
1189	if (expect_false (preparecnt))	1443	if (expect_false (preparecnt))
1190	{	1444	{
1191	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1445	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1192	call_pending (EV_A);	1446	call_pending (EV_A);
1193	}	1447	}
1194		1448
		1449	if (expect_false (!activecnt))
		1450	break;
		1451
1195	/* we might have forked, so reify kernel state if necessary */	1452	/* we might have forked, so reify kernel state if necessary */
1196	if (expect_false (postfork))	1453	if (expect_false (postfork))
1197	loop_fork (EV_A);	1454	loop_fork (EV_A);
1198		1455
1199	/* update fd-related kernel structures */	1456	/* update fd-related kernel structures */
1200	fd_reify (EV_A);	1457	fd_reify (EV_A);
1201		1458
1202	/* calculate blocking time */	1459	/* calculate blocking time */
		1460	{
		1461	ev_tstamp block;
1203		1462
1204	/* we only need this for !monotonic clock or timers, but as we basically	1463	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1205	always have timers, we just calculate it always */	1464	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	1465	else
1210	#endif
1211	{	1466	{
1212	ev_rt_now = ev_time ();	1467	/* update time to cancel out callback processing overhead */
1213	mn_now = ev_rt_now;	1468	time_update (EV_A_ 1e100);
1214	}
1215		1469
1216	if (flags & EVLOOP_NONBLOCK || idlecnt)
1217	block = 0.;
1218	else
1219	{
1220	block = MAX_BLOCKTIME;	1470	block = MAX_BLOCKTIME;
1221		1471
1222	if (timercnt)	1472	if (timercnt)
1223	{	1473	{
1224	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1474	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1225	if (block > to) block = to;	1475	if (block > to) block = to;
1226	}	1476	}
1227		1477
1228	#if EV_PERIODICS	1478	#if EV_PERIODIC_ENABLE
1229	if (periodiccnt)	1479	if (periodiccnt)
1230	{	1480	{
1231	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1481	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1232	if (block > to) block = to;	1482	if (block > to) block = to;
1233	}	1483	}
1234	#endif	1484	#endif
1235		1485
1236	if (block < 0.) block = 0.;	1486	if (expect_false (block < 0.)) block = 0.;
1237	}	1487	}
1238		1488
		1489	++loop_count;
1239	method_poll (EV_A_ block);	1490	backend_poll (EV_A_ block);
1240		1491
1241	/* update ev_rt_now, do magic */	1492	/* update ev_rt_now, do magic */
1242	time_update (EV_A);	1493	time_update (EV_A_ block);
		1494	}
1243		1495
1244	/* queue pending timers and reschedule them */	1496	/* queue pending timers and reschedule them */
1245	timers_reify (EV_A); /* relative timers called last */	1497	timers_reify (EV_A); /* relative timers called last */
1246	#if EV_PERIODICS	1498	#if EV_PERIODIC_ENABLE
1247	periodics_reify (EV_A); /* absolute timers called first */	1499	periodics_reify (EV_A); /* absolute timers called first */
1248	#endif	1500	#endif
1249		1501
		1502	#if EV_IDLE_ENABLE
1250	/* queue idle watchers unless io or timers are pending */	1503	/* queue idle watchers unless other events are pending */
1251	if (idlecnt && !any_pending (EV_A))	1504	idle_reify (EV_A);
1252	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1505	#endif
1253		1506
1254	/* queue check watchers, to be executed first */	1507	/* queue check watchers, to be executed first */
1255	if (checkcnt)	1508	if (expect_false (checkcnt))
1256	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1509	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1257		1510
1258	call_pending (EV_A);	1511	call_pending (EV_A);
1259		1512
1260	if (loop_done)
1261	break;
1262	}	1513	}
		1514	while (expect_true (activecnt && !loop_done));
1263		1515
1264	if (loop_done != 2)	1516	if (loop_done == EVUNLOOP_ONE)
1265	loop_done = 0;	1517	loop_done = EVUNLOOP_CANCEL;
1266	}	1518	}
1267		1519
1268	void	1520	void
1269	ev_unloop (EV_P_ int how)	1521	ev_unloop (EV_P_ int how)
1270	{	1522	{
1271	loop_done = how;	1523	loop_done = how;
1272	}	1524	}
1273		1525
1274	/*****************************************************************************/	1526	/*****************************************************************************/
1275		1527
1276	inline void	1528	void inline_size
1277	wlist_add (WL *head, WL elem)	1529	wlist_add (WL *head, WL elem)
1278	{	1530	{
1279	elem->next = *head;	1531	elem->next = *head;
1280	*head = elem;	1532	*head = elem;
1281	}	1533	}
1282		1534
1283	inline void	1535	void inline_size
1284	wlist_del (WL *head, WL elem)	1536	wlist_del (WL *head, WL elem)
1285	{	1537	{
1286	while (*head)	1538	while (*head)
1287	{	1539	{
1288	if (*head == elem)	1540	if (*head == elem)
…		…
1293		1545
1294	head = &(*head)->next;	1546	head = &(*head)->next;
1295	}	1547	}
1296	}	1548	}
1297		1549
1298	inline void	1550	void inline_speed
1299	ev_clear_pending (EV_P_ W w)	1551	clear_pending (EV_P_ W w)
1300	{	1552	{
1301	if (w->pending)	1553	if (w->pending)
1302	{	1554	{
1303	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1555	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1304	w->pending = 0;	1556	w->pending = 0;
1305	}	1557	}
1306	}	1558	}
1307		1559
1308	inline void	1560	int
		1561	ev_clear_pending (EV_P_ void *w)
		1562	{
		1563	W w_ = (W)w;
		1564	int pending = w_->pending;
		1565
		1566	if (expect_true (pending))
		1567	{
		1568	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1569	w_->pending = 0;
		1570	p->w = 0;
		1571	return p->events;
		1572	}
		1573	else
		1574	return 0;
		1575	}
		1576
		1577	void inline_size
		1578	pri_adjust (EV_P_ W w)
		1579	{
		1580	int pri = w->priority;
		1581	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1582	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1583	w->priority = pri;
		1584	}
		1585
		1586	void inline_speed
1309	ev_start (EV_P_ W w, int active)	1587	ev_start (EV_P_ W w, int active)
1310	{	1588	{
1311	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1589	pri_adjust (EV_A_ w);
1312	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1313
1314	w->active = active;	1590	w->active = active;
1315	ev_ref (EV_A);	1591	ev_ref (EV_A);
1316	}	1592	}
1317		1593
1318	inline void	1594	void inline_size
1319	ev_stop (EV_P_ W w)	1595	ev_stop (EV_P_ W w)
1320	{	1596	{
1321	ev_unref (EV_A);	1597	ev_unref (EV_A);
1322	w->active = 0;	1598	w->active = 0;
1323	}	1599	}
1324		1600
1325	/*****************************************************************************/	1601	/*****************************************************************************/
1326		1602
1327	void	1603	void noinline
1328	ev_io_start (EV_P_ struct ev_io *w)	1604	ev_io_start (EV_P_ ev_io *w)
1329	{	1605	{
1330	int fd = w->fd;	1606	int fd = w->fd;
1331		1607
1332	if (ev_is_active (w))	1608	if (expect_false (ev_is_active (w)))
1333	return;	1609	return;
1334		1610
1335	assert (("ev_io_start called with negative fd", fd >= 0));	1611	assert (("ev_io_start called with negative fd", fd >= 0));
1336		1612
1337	ev_start (EV_A_ (W)w, 1);	1613	ev_start (EV_A_ (W)w, 1);
1338	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1614	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1339	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1615	wlist_add (&anfds[fd].head, (WL)w);
1340		1616
1341	fd_change (EV_A_ fd);	1617	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1618	w->events &= ~EV_IOFDSET;
1342	}	1619	}
1343		1620
1344	void	1621	void noinline
1345	ev_io_stop (EV_P_ struct ev_io *w)	1622	ev_io_stop (EV_P_ ev_io *w)
1346	{	1623	{
1347	ev_clear_pending (EV_A_ (W)w);	1624	clear_pending (EV_A_ (W)w);
1348	if (!ev_is_active (w))	1625	if (expect_false (!ev_is_active (w)))
1349	return;	1626	return;
1350		1627
1351	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1628	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1352		1629
1353	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1630	wlist_del (&anfds[w->fd].head, (WL)w);
1354	ev_stop (EV_A_ (W)w);	1631	ev_stop (EV_A_ (W)w);
1355		1632
1356	fd_change (EV_A_ w->fd);	1633	fd_change (EV_A_ w->fd, 1);
1357	}	1634	}
1358		1635
1359	void	1636	void noinline
1360	ev_timer_start (EV_P_ struct ev_timer *w)	1637	ev_timer_start (EV_P_ ev_timer *w)
1361	{	1638	{
1362	if (ev_is_active (w))	1639	if (expect_false (ev_is_active (w)))
1363	return;	1640	return;
1364		1641
1365	((WT)w)->at += mn_now;	1642	((WT)w)->at += mn_now;
1366		1643
1367	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1644	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1368		1645
1369	ev_start (EV_A_ (W)w, ++timercnt);	1646	ev_start (EV_A_ (W)w, ++timercnt);
1370	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);	1647	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1371	timers [timercnt - 1] = w;	1648	timers [timercnt - 1] = (WT)w;
1372	upheap ((WT *)timers, timercnt - 1);	1649	upheap (timers, timercnt - 1);
1373		1650
1374	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1651	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1375	}	1652	}
1376		1653
1377	void	1654	void noinline
1378	ev_timer_stop (EV_P_ struct ev_timer *w)	1655	ev_timer_stop (EV_P_ ev_timer *w)
1379	{	1656	{
1380	ev_clear_pending (EV_A_ (W)w);	1657	clear_pending (EV_A_ (W)w);
1381	if (!ev_is_active (w))	1658	if (expect_false (!ev_is_active (w)))
1382	return;	1659	return;
1383		1660
1384	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1661	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1385		1662
1386	if (((W)w)->active < timercnt--)	1663	{
		1664	int active = ((W)w)->active;
		1665
		1666	if (expect_true (--active < --timercnt))
1387	{	1667	{
1388	timers [((W)w)->active - 1] = timers [timercnt];	1668	timers [active] = timers [timercnt];
1389	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1669	adjustheap (timers, timercnt, active);
1390	}	1670	}
		1671	}
1391		1672
1392	((WT)w)->at -= mn_now;	1673	((WT)w)->at -= mn_now;
1393		1674
1394	ev_stop (EV_A_ (W)w);	1675	ev_stop (EV_A_ (W)w);
1395	}	1676	}
1396		1677
1397	void	1678	void noinline
1398	ev_timer_again (EV_P_ struct ev_timer *w)	1679	ev_timer_again (EV_P_ ev_timer *w)
1399	{	1680	{
1400	if (ev_is_active (w))	1681	if (ev_is_active (w))
1401	{	1682	{
1402	if (w->repeat)	1683	if (w->repeat)
1403	{	1684	{
1404	((WT)w)->at = mn_now + w->repeat;	1685	((WT)w)->at = mn_now + w->repeat;
1405	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1686	adjustheap (timers, timercnt, ((W)w)->active - 1);
1406	}	1687	}
1407	else	1688	else
1408	ev_timer_stop (EV_A_ w);	1689	ev_timer_stop (EV_A_ w);
1409	}	1690	}
1410	else if (w->repeat)	1691	else if (w->repeat)
…		…
1412	w->at = w->repeat;	1693	w->at = w->repeat;
1413	ev_timer_start (EV_A_ w);	1694	ev_timer_start (EV_A_ w);
1414	}	1695	}
1415	}	1696	}
1416		1697
1417	#if EV_PERIODICS	1698	#if EV_PERIODIC_ENABLE
1418	void	1699	void noinline
1419	ev_periodic_start (EV_P_ struct ev_periodic *w)	1700	ev_periodic_start (EV_P_ ev_periodic *w)
1420	{	1701	{
1421	if (ev_is_active (w))	1702	if (expect_false (ev_is_active (w)))
1422	return;	1703	return;
1423		1704
1424	if (w->reschedule_cb)	1705	if (w->reschedule_cb)
1425	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1706	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1426	else if (w->interval)	1707	else if (w->interval)
1427	{	1708	{
1428	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1709	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 */	1710	/* 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;	1711	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1431	}	1712	}
		1713	else
		1714	((WT)w)->at = w->offset;
1432		1715
1433	ev_start (EV_A_ (W)w, ++periodiccnt);	1716	ev_start (EV_A_ (W)w, ++periodiccnt);
1434	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1717	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1435	periodics [periodiccnt - 1] = w;	1718	periodics [periodiccnt - 1] = (WT)w;
1436	upheap ((WT *)periodics, periodiccnt - 1);	1719	upheap (periodics, periodiccnt - 1);
1437		1720
1438	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1721	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1439	}	1722	}
1440		1723
1441	void	1724	void noinline
1442	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1725	ev_periodic_stop (EV_P_ ev_periodic *w)
1443	{	1726	{
1444	ev_clear_pending (EV_A_ (W)w);	1727	clear_pending (EV_A_ (W)w);
1445	if (!ev_is_active (w))	1728	if (expect_false (!ev_is_active (w)))
1446	return;	1729	return;
1447		1730
1448	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1731	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1449		1732
1450	if (((W)w)->active < periodiccnt--)	1733	{
		1734	int active = ((W)w)->active;
		1735
		1736	if (expect_true (--active < --periodiccnt))
1451	{	1737	{
1452	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1738	periodics [active] = periodics [periodiccnt];
1453	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1739	adjustheap (periodics, periodiccnt, active);
1454	}	1740	}
		1741	}
1455		1742
1456	ev_stop (EV_A_ (W)w);	1743	ev_stop (EV_A_ (W)w);
1457	}	1744	}
1458		1745
1459	void	1746	void noinline
1460	ev_periodic_again (EV_P_ struct ev_periodic *w)	1747	ev_periodic_again (EV_P_ ev_periodic *w)
1461	{	1748	{
1462	/* TODO: use adjustheap and recalculation */	1749	/* TODO: use adjustheap and recalculation */
1463	ev_periodic_stop (EV_A_ w);	1750	ev_periodic_stop (EV_A_ w);
1464	ev_periodic_start (EV_A_ w);	1751	ev_periodic_start (EV_A_ w);
1465	}	1752	}
1466	#endif	1753	#endif
1467		1754
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	1755	#ifndef SA_RESTART
1535	# define SA_RESTART 0	1756	# define SA_RESTART 0
1536	#endif	1757	#endif
1537		1758
1538	void	1759	void noinline
1539	ev_signal_start (EV_P_ struct ev_signal *w)	1760	ev_signal_start (EV_P_ ev_signal *w)
1540	{	1761	{
1541	#if EV_MULTIPLICITY	1762	#if EV_MULTIPLICITY
1542	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1763	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1543	#endif	1764	#endif
1544	if (ev_is_active (w))	1765	if (expect_false (ev_is_active (w)))
1545	return;	1766	return;
1546		1767
1547	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1768	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1548		1769
		1770	{
		1771	#ifndef _WIN32
		1772	sigset_t full, prev;
		1773	sigfillset (&full);
		1774	sigprocmask (SIG_SETMASK, &full, &prev);
		1775	#endif
		1776
		1777	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1778
		1779	#ifndef _WIN32
		1780	sigprocmask (SIG_SETMASK, &prev, 0);
		1781	#endif
		1782	}
		1783
1549	ev_start (EV_A_ (W)w, 1);	1784	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);	1785	wlist_add (&signals [w->signum - 1].head, (WL)w);
1552		1786
1553	if (!((WL)w)->next)	1787	if (!((WL)w)->next)
1554	{	1788	{
1555	#if _WIN32	1789	#if _WIN32
1556	signal (w->signum, sighandler);	1790	signal (w->signum, sighandler);
…		…
1562	sigaction (w->signum, &sa, 0);	1796	sigaction (w->signum, &sa, 0);
1563	#endif	1797	#endif
1564	}	1798	}
1565	}	1799	}
1566		1800
1567	void	1801	void noinline
1568	ev_signal_stop (EV_P_ struct ev_signal *w)	1802	ev_signal_stop (EV_P_ ev_signal *w)
1569	{	1803	{
1570	ev_clear_pending (EV_A_ (W)w);	1804	clear_pending (EV_A_ (W)w);
1571	if (!ev_is_active (w))	1805	if (expect_false (!ev_is_active (w)))
1572	return;	1806	return;
1573		1807
1574	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1808	wlist_del (&signals [w->signum - 1].head, (WL)w);
1575	ev_stop (EV_A_ (W)w);	1809	ev_stop (EV_A_ (W)w);
1576		1810
1577	if (!signals [w->signum - 1].head)	1811	if (!signals [w->signum - 1].head)
1578	signal (w->signum, SIG_DFL);	1812	signal (w->signum, SIG_DFL);
1579	}	1813	}
1580		1814
1581	void	1815	void
1582	ev_child_start (EV_P_ struct ev_child *w)	1816	ev_child_start (EV_P_ ev_child *w)
1583	{	1817	{
1584	#if EV_MULTIPLICITY	1818	#if EV_MULTIPLICITY
1585	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1819	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1586	#endif	1820	#endif
1587	if (ev_is_active (w))	1821	if (expect_false (ev_is_active (w)))
1588	return;	1822	return;
1589		1823
1590	ev_start (EV_A_ (W)w, 1);	1824	ev_start (EV_A_ (W)w, 1);
1591	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1825	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1592	}	1826	}
1593		1827
1594	void	1828	void
1595	ev_child_stop (EV_P_ struct ev_child *w)	1829	ev_child_stop (EV_P_ ev_child *w)
1596	{	1830	{
1597	ev_clear_pending (EV_A_ (W)w);	1831	clear_pending (EV_A_ (W)w);
1598	if (!ev_is_active (w))	1832	if (expect_false (!ev_is_active (w)))
1599	return;	1833	return;
1600		1834
1601	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1835	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1602	ev_stop (EV_A_ (W)w);	1836	ev_stop (EV_A_ (W)w);
1603	}	1837	}
1604		1838
		1839	#if EV_STAT_ENABLE
		1840
		1841	# ifdef _WIN32
		1842	# undef lstat
		1843	# define lstat(a,b) _stati64 (a,b)
		1844	# endif
		1845
		1846	#define DEF_STAT_INTERVAL 5.0074891
		1847	#define MIN_STAT_INTERVAL 0.1074891
		1848
		1849	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1850
		1851	#if EV_USE_INOTIFY
		1852	# define EV_INOTIFY_BUFSIZE 8192
		1853
		1854	static void noinline
		1855	infy_add (EV_P_ ev_stat *w)
		1856	{
		1857	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);
		1858
		1859	if (w->wd < 0)
		1860	{
		1861	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1862
		1863	/* monitor some parent directory for speedup hints */
		1864	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1865	{
		1866	char path [4096];
		1867	strcpy (path, w->path);
		1868
		1869	do
		1870	{
		1871	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1872	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1873
		1874	char *pend = strrchr (path, '/');
		1875
		1876	if (!pend)
		1877	break; /* whoops, no '/', complain to your admin */
		1878
		1879	*pend = 0;
		1880	w->wd = inotify_add_watch (fs_fd, path, mask);
		1881	}
		1882	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1883	}
		1884	}
		1885	else
		1886	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1887
		1888	if (w->wd >= 0)
		1889	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1890	}
		1891
		1892	static void noinline
		1893	infy_del (EV_P_ ev_stat *w)
		1894	{
		1895	int slot;
		1896	int wd = w->wd;
		1897
		1898	if (wd < 0)
		1899	return;
		1900
		1901	w->wd = -2;
		1902	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1903	wlist_del (&fs_hash [slot].head, (WL)w);
		1904
		1905	/* remove this watcher, if others are watching it, they will rearm */
		1906	inotify_rm_watch (fs_fd, wd);
		1907	}
		1908
		1909	static void noinline
		1910	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1911	{
		1912	if (slot < 0)
		1913	/* overflow, need to check for all hahs slots */
		1914	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1915	infy_wd (EV_A_ slot, wd, ev);
		1916	else
		1917	{
		1918	WL w_;
		1919
		1920	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1921	{
		1922	ev_stat *w = (ev_stat *)w_;
		1923	w_ = w_->next; /* lets us remove this watcher and all before it */
		1924
		1925	if (w->wd == wd || wd == -1)
		1926	{
		1927	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1928	{
		1929	w->wd = -1;
		1930	infy_add (EV_A_ w); /* re-add, no matter what */
		1931	}
		1932
		1933	stat_timer_cb (EV_A_ &w->timer, 0);
		1934	}
		1935	}
		1936	}
		1937	}
		1938
		1939	static void
		1940	infy_cb (EV_P_ ev_io *w, int revents)
		1941	{
		1942	char buf [EV_INOTIFY_BUFSIZE];
		1943	struct inotify_event *ev = (struct inotify_event *)buf;
		1944	int ofs;
		1945	int len = read (fs_fd, buf, sizeof (buf));
		1946
		1947	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1948	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1949	}
		1950
		1951	void inline_size
		1952	infy_init (EV_P)
		1953	{
		1954	if (fs_fd != -2)
		1955	return;
		1956
		1957	fs_fd = inotify_init ();
		1958
		1959	if (fs_fd >= 0)
		1960	{
		1961	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1962	ev_set_priority (&fs_w, EV_MAXPRI);
		1963	ev_io_start (EV_A_ &fs_w);
		1964	}
		1965	}
		1966
		1967	void inline_size
		1968	infy_fork (EV_P)
		1969	{
		1970	int slot;
		1971
		1972	if (fs_fd < 0)
		1973	return;
		1974
		1975	close (fs_fd);
		1976	fs_fd = inotify_init ();
		1977
		1978	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1979	{
		1980	WL w_ = fs_hash [slot].head;
		1981	fs_hash [slot].head = 0;
		1982
		1983	while (w_)
		1984	{
		1985	ev_stat *w = (ev_stat *)w_;
		1986	w_ = w_->next; /* lets us add this watcher */
		1987
		1988	w->wd = -1;
		1989
		1990	if (fs_fd >= 0)
		1991	infy_add (EV_A_ w); /* re-add, no matter what */
		1992	else
		1993	ev_timer_start (EV_A_ &w->timer);
		1994	}
		1995
		1996	}
		1997	}
		1998
		1999	#endif
		2000
		2001	void
		2002	ev_stat_stat (EV_P_ ev_stat *w)
		2003	{
		2004	if (lstat (w->path, &w->attr) < 0)
		2005	w->attr.st_nlink = 0;
		2006	else if (!w->attr.st_nlink)
		2007	w->attr.st_nlink = 1;
		2008	}
		2009
		2010	static void noinline
		2011	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2012	{
		2013	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2014
		2015	/* we copy this here each the time so that */
		2016	/* prev has the old value when the callback gets invoked */
		2017	w->prev = w->attr;
		2018	ev_stat_stat (EV_A_ w);
		2019
		2020	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2021	if (
		2022	w->prev.st_dev != w->attr.st_dev
		2023	|| w->prev.st_ino != w->attr.st_ino
		2024	|| w->prev.st_mode != w->attr.st_mode
		2025	|| w->prev.st_nlink != w->attr.st_nlink
		2026	|| w->prev.st_uid != w->attr.st_uid
		2027	|| w->prev.st_gid != w->attr.st_gid
		2028	|| w->prev.st_rdev != w->attr.st_rdev
		2029	|| w->prev.st_size != w->attr.st_size
		2030	|| w->prev.st_atime != w->attr.st_atime
		2031	|| w->prev.st_mtime != w->attr.st_mtime
		2032	|| w->prev.st_ctime != w->attr.st_ctime
		2033	) {
		2034	#if EV_USE_INOTIFY
		2035	infy_del (EV_A_ w);
		2036	infy_add (EV_A_ w);
		2037	ev_stat_stat (EV_A_ w); /* avoid race... */
		2038	#endif
		2039
		2040	ev_feed_event (EV_A_ w, EV_STAT);
		2041	}
		2042	}
		2043
		2044	void
		2045	ev_stat_start (EV_P_ ev_stat *w)
		2046	{
		2047	if (expect_false (ev_is_active (w)))
		2048	return;
		2049
		2050	/* since we use memcmp, we need to clear any padding data etc. */
		2051	memset (&w->prev, 0, sizeof (ev_statdata));
		2052	memset (&w->attr, 0, sizeof (ev_statdata));
		2053
		2054	ev_stat_stat (EV_A_ w);
		2055
		2056	if (w->interval < MIN_STAT_INTERVAL)
		2057	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2058
		2059	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2060	ev_set_priority (&w->timer, ev_priority (w));
		2061
		2062	#if EV_USE_INOTIFY
		2063	infy_init (EV_A);
		2064
		2065	if (fs_fd >= 0)
		2066	infy_add (EV_A_ w);
		2067	else
		2068	#endif
		2069	ev_timer_start (EV_A_ &w->timer);
		2070
		2071	ev_start (EV_A_ (W)w, 1);
		2072	}
		2073
		2074	void
		2075	ev_stat_stop (EV_P_ ev_stat *w)
		2076	{
		2077	clear_pending (EV_A_ (W)w);
		2078	if (expect_false (!ev_is_active (w)))
		2079	return;
		2080
		2081	#if EV_USE_INOTIFY
		2082	infy_del (EV_A_ w);
		2083	#endif
		2084	ev_timer_stop (EV_A_ &w->timer);
		2085
		2086	ev_stop (EV_A_ (W)w);
		2087	}
		2088	#endif
		2089
		2090	#if EV_IDLE_ENABLE
		2091	void
		2092	ev_idle_start (EV_P_ ev_idle *w)
		2093	{
		2094	if (expect_false (ev_is_active (w)))
		2095	return;
		2096
		2097	pri_adjust (EV_A_ (W)w);
		2098
		2099	{
		2100	int active = ++idlecnt [ABSPRI (w)];
		2101
		2102	++idleall;
		2103	ev_start (EV_A_ (W)w, active);
		2104
		2105	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2106	idles [ABSPRI (w)][active - 1] = w;
		2107	}
		2108	}
		2109
		2110	void
		2111	ev_idle_stop (EV_P_ ev_idle *w)
		2112	{
		2113	clear_pending (EV_A_ (W)w);
		2114	if (expect_false (!ev_is_active (w)))
		2115	return;
		2116
		2117	{
		2118	int active = ((W)w)->active;
		2119
		2120	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2121	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2122
		2123	ev_stop (EV_A_ (W)w);
		2124	--idleall;
		2125	}
		2126	}
		2127	#endif
		2128
		2129	void
		2130	ev_prepare_start (EV_P_ ev_prepare *w)
		2131	{
		2132	if (expect_false (ev_is_active (w)))
		2133	return;
		2134
		2135	ev_start (EV_A_ (W)w, ++preparecnt);
		2136	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2137	prepares [preparecnt - 1] = w;
		2138	}
		2139
		2140	void
		2141	ev_prepare_stop (EV_P_ ev_prepare *w)
		2142	{
		2143	clear_pending (EV_A_ (W)w);
		2144	if (expect_false (!ev_is_active (w)))
		2145	return;
		2146
		2147	{
		2148	int active = ((W)w)->active;
		2149	prepares [active - 1] = prepares [--preparecnt];
		2150	((W)prepares [active - 1])->active = active;
		2151	}
		2152
		2153	ev_stop (EV_A_ (W)w);
		2154	}
		2155
		2156	void
		2157	ev_check_start (EV_P_ ev_check *w)
		2158	{
		2159	if (expect_false (ev_is_active (w)))
		2160	return;
		2161
		2162	ev_start (EV_A_ (W)w, ++checkcnt);
		2163	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2164	checks [checkcnt - 1] = w;
		2165	}
		2166
		2167	void
		2168	ev_check_stop (EV_P_ ev_check *w)
		2169	{
		2170	clear_pending (EV_A_ (W)w);
		2171	if (expect_false (!ev_is_active (w)))
		2172	return;
		2173
		2174	{
		2175	int active = ((W)w)->active;
		2176	checks [active - 1] = checks [--checkcnt];
		2177	((W)checks [active - 1])->active = active;
		2178	}
		2179
		2180	ev_stop (EV_A_ (W)w);
		2181	}
		2182
		2183	#if EV_EMBED_ENABLE
		2184	void noinline
		2185	ev_embed_sweep (EV_P_ ev_embed *w)
		2186	{
		2187	ev_loop (w->other, EVLOOP_NONBLOCK);
		2188	}
		2189
		2190	static void
		2191	embed_io_cb (EV_P_ ev_io *io, int revents)
		2192	{
		2193	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2194
		2195	if (ev_cb (w))
		2196	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2197	else
		2198	ev_embed_sweep (loop, w);
		2199	}
		2200
		2201	static void
		2202	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2203	{
		2204	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2205
		2206	fd_reify (w->other);
		2207	}
		2208
		2209	void
		2210	ev_embed_start (EV_P_ ev_embed *w)
		2211	{
		2212	if (expect_false (ev_is_active (w)))
		2213	return;
		2214
		2215	{
		2216	struct ev_loop *loop = w->other;
		2217	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2218	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
		2219	}
		2220
		2221	ev_set_priority (&w->io, ev_priority (w));
		2222	ev_io_start (EV_A_ &w->io);
		2223
		2224	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2225	ev_set_priority (&w->prepare, EV_MINPRI);
		2226	ev_prepare_start (EV_A_ &w->prepare);
		2227
		2228	ev_start (EV_A_ (W)w, 1);
		2229	}
		2230
		2231	void
		2232	ev_embed_stop (EV_P_ ev_embed *w)
		2233	{
		2234	clear_pending (EV_A_ (W)w);
		2235	if (expect_false (!ev_is_active (w)))
		2236	return;
		2237
		2238	ev_io_stop (EV_A_ &w->io);
		2239	ev_prepare_stop (EV_A_ &w->prepare);
		2240
		2241	ev_stop (EV_A_ (W)w);
		2242	}
		2243	#endif
		2244
		2245	#if EV_FORK_ENABLE
		2246	void
		2247	ev_fork_start (EV_P_ ev_fork *w)
		2248	{
		2249	if (expect_false (ev_is_active (w)))
		2250	return;
		2251
		2252	ev_start (EV_A_ (W)w, ++forkcnt);
		2253	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2254	forks [forkcnt - 1] = w;
		2255	}
		2256
		2257	void
		2258	ev_fork_stop (EV_P_ ev_fork *w)
		2259	{
		2260	clear_pending (EV_A_ (W)w);
		2261	if (expect_false (!ev_is_active (w)))
		2262	return;
		2263
		2264	{
		2265	int active = ((W)w)->active;
		2266	forks [active - 1] = forks [--forkcnt];
		2267	((W)forks [active - 1])->active = active;
		2268	}
		2269
		2270	ev_stop (EV_A_ (W)w);
		2271	}
		2272	#endif
		2273
1605	/*****************************************************************************/	2274	/*****************************************************************************/
1606		2275
1607	struct ev_once	2276	struct ev_once
1608	{	2277	{
1609	struct ev_io io;	2278	ev_io io;
1610	struct ev_timer to;	2279	ev_timer to;
1611	void (*cb)(int revents, void *arg);	2280	void (*cb)(int revents, void *arg);
1612	void *arg;	2281	void *arg;
1613	};	2282	};
1614		2283
1615	static void	2284	static void
…		…
1624		2293
1625	cb (revents, arg);	2294	cb (revents, arg);
1626	}	2295	}
1627		2296
1628	static void	2297	static void
1629	once_cb_io (EV_P_ struct ev_io *w, int revents)	2298	once_cb_io (EV_P_ ev_io *w, int revents)
1630	{	2299	{
1631	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2300	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1632	}	2301	}
1633		2302
1634	static void	2303	static void
1635	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2304	once_cb_to (EV_P_ ev_timer *w, int revents)
1636	{	2305	{
1637	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2306	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1638	}	2307	}
1639		2308
1640	void	2309	void
1641	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2310	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1642	{	2311	{
1643	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	2312	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1644		2313
1645	if (!once)	2314	if (expect_false (!once))
		2315	{
1646	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2316	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1647	else	2317	return;
1648	{	2318	}
		2319
1649	once->cb = cb;	2320	once->cb = cb;
1650	once->arg = arg;	2321	once->arg = arg;
1651		2322
1652	ev_init (&once->io, once_cb_io);	2323	ev_init (&once->io, once_cb_io);
1653	if (fd >= 0)	2324	if (fd >= 0)
1654	{	2325	{
1655	ev_io_set (&once->io, fd, events);	2326	ev_io_set (&once->io, fd, events);
1656	ev_io_start (EV_A_ &once->io);	2327	ev_io_start (EV_A_ &once->io);
1657	}	2328	}
1658		2329
1659	ev_init (&once->to, once_cb_to);	2330	ev_init (&once->to, once_cb_to);
1660	if (timeout >= 0.)	2331	if (timeout >= 0.)
1661	{	2332	{
1662	ev_timer_set (&once->to, timeout, 0.);	2333	ev_timer_set (&once->to, timeout, 0.);
1663	ev_timer_start (EV_A_ &once->to);	2334	ev_timer_start (EV_A_ &once->to);
1664	}
1665	}	2335	}
1666	}	2336	}
		2337
		2338	#if EV_MULTIPLICITY
		2339	#include "ev_wrap.h"
		2340	#endif
1667		2341
1668	#ifdef __cplusplus	2342	#ifdef __cplusplus
1669	}	2343	}
1670	#endif	2344	#endif
1671		2345

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