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Comparing libev/ev.c (file contents):
Revision 1.105 by root, Mon Nov 12 01:02:09 2007 UTC vs.
Revision 1.179 by root, Tue Dec 11 21:04:40 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) && !defined (__APPLE__)	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
60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE) && !defined (__APPLE__)	83	# ifndef EV_USE_KQUEUE
		84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
61	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
		97	# endif
		98
		99	# ifndef EV_USE_INOTIFY
		100	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		101	# define EV_USE_INOTIFY 1
		102	# else
		103	# define EV_USE_INOTIFY 0
		104	# endif
62	# endif	105	# endif
63		106
64	#endif	107	#endif
65		108
66	#include <math.h>	109	#include <math.h>
…		…
75	#include <sys/types.h>	118	#include <sys/types.h>
76	#include <time.h>	119	#include <time.h>
77		120
78	#include <signal.h>	121	#include <signal.h>
79		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
80	#ifndef _WIN32	129	#ifndef _WIN32
81	# include <unistd.h>
82	# include <sys/time.h>	130	# include <sys/time.h>
83	# include <sys/wait.h>	131	# include <sys/wait.h>
		132	# include <unistd.h>
84	#else	133	#else
85	# define WIN32_LEAN_AND_MEAN	134	# define WIN32_LEAN_AND_MEAN
86	# include <windows.h>	135	# include <windows.h>
87	# ifndef EV_SELECT_IS_WINSOCKET	136	# ifndef EV_SELECT_IS_WINSOCKET
88	# define EV_SELECT_IS_WINSOCKET 1	137	# define EV_SELECT_IS_WINSOCKET 1
…		…
90	#endif	139	#endif
91		140
92	/**/	141	/**/
93		142
94	#ifndef EV_USE_MONOTONIC	143	#ifndef EV_USE_MONOTONIC
95	# define EV_USE_MONOTONIC 1	144	# define EV_USE_MONOTONIC 0
		145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
96	#endif	149	#endif
97		150
98	#ifndef EV_USE_SELECT	151	#ifndef EV_USE_SELECT
99	# define EV_USE_SELECT 1	152	# define EV_USE_SELECT 1
100	# define EV_SELECT_USE_FD_SET 1
101	#endif	153	#endif
102		154
103	#ifndef EV_USE_POLL	155	#ifndef EV_USE_POLL
104	# ifdef _WIN32	156	# ifdef _WIN32
105	# define EV_USE_POLL 0	157	# define EV_USE_POLL 0
…		…
114		166
115	#ifndef EV_USE_KQUEUE	167	#ifndef EV_USE_KQUEUE
116	# define EV_USE_KQUEUE 0	168	# define EV_USE_KQUEUE 0
117	#endif	169	#endif
118		170
119	#ifndef EV_USE_REALTIME	171	#ifndef EV_USE_PORT
120	# define EV_USE_REALTIME 1	172	# define EV_USE_PORT 0
		173	#endif
		174
		175	#ifndef EV_USE_INOTIFY
		176	# define EV_USE_INOTIFY 0
		177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
		182	# else
		183	# define EV_PID_HASHSIZE 16
		184	# endif
		185	#endif
		186
		187	#ifndef EV_INOTIFY_HASHSIZE
		188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
121	#endif	193	#endif
122		194
123	/**/	195	/**/
124		196
125	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
…		…
134		206
135	#if EV_SELECT_IS_WINSOCKET	207	#if EV_SELECT_IS_WINSOCKET
136	# include <winsock.h>	208	# include <winsock.h>
137	#endif	209	#endif
138		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
139	/**/	219	/**/
140		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 */
		230
141	#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) */
142	#define MAX_BLOCKTIME 59.731 /* 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) */
143	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
144	/*#define CLEANUP_INTERVAL 300. /* 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 */
145
146	#ifdef EV_H
147	# include EV_H
148	#else
149	# include "ev.h"
150	#endif
151		234
152	#if __GNUC__ >= 3	235	#if __GNUC__ >= 3
153	# define expect(expr,value) __builtin_expect ((expr),(value))	236	# define expect(expr,value) __builtin_expect ((expr),(value))
154	# define inline inline	237	# define noinline __attribute__ ((noinline))
155	#else	238	#else
156	# define expect(expr,value) (expr)	239	# define expect(expr,value) (expr)
157	# define inline static	240	# define noinline
		241	# if __STDC_VERSION__ < 199901L
		242	# define inline
		243	# endif
158	#endif	244	#endif
159		245
160	#define expect_false(expr) expect ((expr) != 0, 0)	246	#define expect_false(expr) expect ((expr) != 0, 0)
161	#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
162		255
163	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	256	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
164	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	257	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
165		258
166	#define EMPTY /* required for microsofts broken pseudo-c compiler */	259	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		260	#define EMPTY2(a,b) /* used to suppress some warnings */
167		261
168	typedef struct ev_watcher *W;	262	typedef ev_watcher *W;
169	typedef struct ev_watcher_list *WL;	263	typedef ev_watcher_list *WL;
170	typedef struct ev_watcher_time *WT;	264	typedef ev_watcher_time *WT;
171		265
172	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	266	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
173		267
174	#ifdef _WIN32	268	#ifdef _WIN32
175	# include "ev_win32.c"	269	# include "ev_win32.c"
…		…
177		271
178	/*****************************************************************************/	272	/*****************************************************************************/
179		273
180	static void (*syserr_cb)(const char *msg);	274	static void (*syserr_cb)(const char *msg);
181		275
		276	void
182	void ev_set_syserr_cb (void (*cb)(const char *msg))	277	ev_set_syserr_cb (void (*cb)(const char *msg))
183	{	278	{
184	syserr_cb = cb;	279	syserr_cb = cb;
185	}	280	}
186		281
187	static void	282	static void noinline
188	syserr (const char *msg)	283	syserr (const char *msg)
189	{	284	{
190	if (!msg)	285	if (!msg)
191	msg = "(libev) system error";	286	msg = "(libev) system error";
192		287
…		…
199	}	294	}
200	}	295	}
201		296
202	static void *(*alloc)(void *ptr, long size);	297	static void *(*alloc)(void *ptr, long size);
203		298
		299	void
204	void ev_set_allocator (void *(*cb)(void *ptr, long size))	300	ev_set_allocator (void *(*cb)(void *ptr, long size))
205	{	301	{
206	alloc = cb;	302	alloc = cb;
207	}	303	}
208		304
209	static void *	305	inline_speed void *
210	ev_realloc (void *ptr, long size)	306	ev_realloc (void *ptr, long size)
211	{	307	{
212	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
213		309
214	if (!ptr && size)	310	if (!ptr && size)
…		…
238	typedef struct	334	typedef struct
239	{	335	{
240	W w;	336	W w;
241	int events;	337	int events;
242	} ANPENDING;	338	} ANPENDING;
		339
		340	#if EV_USE_INOTIFY
		341	typedef struct
		342	{
		343	WL head;
		344	} ANFS;
		345	#endif
243		346
244	#if EV_MULTIPLICITY	347	#if EV_MULTIPLICITY
245		348
246	struct ev_loop	349	struct ev_loop
247	{	350	{
…		…
251	#include "ev_vars.h"	354	#include "ev_vars.h"
252	#undef VAR	355	#undef VAR
253	};	356	};
254	#include "ev_wrap.h"	357	#include "ev_wrap.h"
255		358
256	struct ev_loop default_loop_struct;	359	static struct ev_loop default_loop_struct;
257	static struct ev_loop *default_loop;	360	struct ev_loop *ev_default_loop_ptr;
258		361
259	#else	362	#else
260		363
261	ev_tstamp ev_rt_now;	364	ev_tstamp ev_rt_now;
262	#define VAR(name,decl) static decl;	365	#define VAR(name,decl) static decl;
263	#include "ev_vars.h"	366	#include "ev_vars.h"
264	#undef VAR	367	#undef VAR
265		368
266	static int default_loop;	369	static int ev_default_loop_ptr;
267		370
268	#endif	371	#endif
269		372
270	/*****************************************************************************/	373	/*****************************************************************************/
271		374
…		…
281	gettimeofday (&tv, 0);	384	gettimeofday (&tv, 0);
282	return tv.tv_sec + tv.tv_usec * 1e-6;	385	return tv.tv_sec + tv.tv_usec * 1e-6;
283	#endif	386	#endif
284	}	387	}
285		388
286	inline ev_tstamp	389	ev_tstamp inline_size
287	get_clock (void)	390	get_clock (void)
288	{	391	{
289	#if EV_USE_MONOTONIC	392	#if EV_USE_MONOTONIC
290	if (expect_true (have_monotonic))	393	if (expect_true (have_monotonic))
291	{	394	{
…		…
304	{	407	{
305	return ev_rt_now;	408	return ev_rt_now;
306	}	409	}
307	#endif	410	#endif
308		411
309	#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	}
310		439
311	#define array_needsize(type,base,cur,cnt,init) \	440	#define array_needsize(type,base,cur,cnt,init) \
312	if (expect_false ((cnt) > cur)) \	441	if (expect_false ((cnt) > (cur))) \
313	{ \	442	{ \
314	int newcnt = cur; \	443	int ocur_ = (cur); \
315	do \	444	(base) = (type *)array_realloc \
316	{ \	445	(sizeof (type), (base), &(cur), (cnt)); \
317	newcnt = array_roundsize (type, newcnt << 1); \	446	init ((base) + (ocur_), (cur) - ocur_); \
318	} \
319	while ((cnt) > newcnt); \
320	\
321	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
322	init (base + cur, newcnt - cur); \
323	cur = newcnt; \
324	}	447	}
325		448
		449	#if 0
326	#define array_slim(type,stem) \	450	#define array_slim(type,stem) \
327	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	451	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
328	{ \	452	{ \
329	stem ## max = array_roundsize (stem ## cnt >> 1); \	453	stem ## max = array_roundsize (stem ## cnt >> 1); \
330	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	454	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
331	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	455	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
332	}	456	}
		457	#endif
333		458
334	#define array_free(stem, idx) \	459	#define array_free(stem, idx) \
335	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;
336		461
337	/*****************************************************************************/	462	/*****************************************************************************/
338		463
339	static void	464	void noinline
		465	ev_feed_event (EV_P_ void *w, int revents)
		466	{
		467	W w_ = (W)w;
		468	int pri = ABSPRI (w_);
		469
		470	if (expect_false (w_->pending))
		471	pendings [pri][w_->pending - 1].events |= revents;
		472	else
		473	{
		474	w_->pending = ++pendingcnt [pri];
		475	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		476	pendings [pri][w_->pending - 1].w = w_;
		477	pendings [pri][w_->pending - 1].events = revents;
		478	}
		479	}
		480
		481	void inline_speed
		482	queue_events (EV_P_ W *events, int eventcnt, int type)
		483	{
		484	int i;
		485
		486	for (i = 0; i < eventcnt; ++i)
		487	ev_feed_event (EV_A_ events [i], type);
		488	}
		489
		490	/*****************************************************************************/
		491
		492	void inline_size
340	anfds_init (ANFD *base, int count)	493	anfds_init (ANFD *base, int count)
341	{	494	{
342	while (count--)	495	while (count--)
343	{	496	{
344	base->head = 0;	497	base->head = 0;
…		…
347		500
348	++base;	501	++base;
349	}	502	}
350	}	503	}
351		504
352	void	505	void inline_speed
353	ev_feed_event (EV_P_ void *w, int revents)
354	{
355	W w_ = (W)w;
356
357	if (w_->pending)
358	{
359	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
360	return;
361	}
362
363	w_->pending = ++pendingcnt [ABSPRI (w_)];
364	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
365	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
366	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
367	}
368
369	static void
370	queue_events (EV_P_ W *events, int eventcnt, int type)
371	{
372	int i;
373
374	for (i = 0; i < eventcnt; ++i)
375	ev_feed_event (EV_A_ events [i], type);
376	}
377
378	inline void
379	fd_event (EV_P_ int fd, int revents)	506	fd_event (EV_P_ int fd, int revents)
380	{	507	{
381	ANFD *anfd = anfds + fd;	508	ANFD *anfd = anfds + fd;
382	struct ev_io *w;	509	ev_io *w;
383		510
384	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)
385	{	512	{
386	int ev = w->events & revents;	513	int ev = w->events & revents;
387		514
388	if (ev)	515	if (ev)
389	ev_feed_event (EV_A_ (W)w, ev);	516	ev_feed_event (EV_A_ (W)w, ev);
…		…
391	}	518	}
392		519
393	void	520	void
394	ev_feed_fd_event (EV_P_ int fd, int revents)	521	ev_feed_fd_event (EV_P_ int fd, int revents)
395	{	522	{
		523	if (fd >= 0 && fd < anfdmax)
396	fd_event (EV_A_ fd, revents);	524	fd_event (EV_A_ fd, revents);
397	}	525	}
398		526
399	/*****************************************************************************/	527	void inline_size
400
401	static void
402	fd_reify (EV_P)	528	fd_reify (EV_P)
403	{	529	{
404	int i;	530	int i;
405		531
406	for (i = 0; i < fdchangecnt; ++i)	532	for (i = 0; i < fdchangecnt; ++i)
407	{	533	{
408	int fd = fdchanges [i];	534	int fd = fdchanges [i];
409	ANFD *anfd = anfds + fd;	535	ANFD *anfd = anfds + fd;
410	struct ev_io *w;	536	ev_io *w;
411		537
412	int events = 0;	538	int events = 0;
413		539
414	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)
415	events |= w->events;	541	events |= w->events;
416		542
417	#if EV_SELECT_IS_WINSOCKET	543	#if EV_SELECT_IS_WINSOCKET
418	if (events)	544	if (events)
419	{	545	{
…		…
423	}	549	}
424	#endif	550	#endif
425		551
426	anfd->reify = 0;	552	anfd->reify = 0;
427		553
428	method_modify (EV_A_ fd, anfd->events, events);	554	backend_modify (EV_A_ fd, anfd->events, events);
429	anfd->events = events;	555	anfd->events = events;
430	}	556	}
431		557
432	fdchangecnt = 0;	558	fdchangecnt = 0;
433	}	559	}
434		560
435	static void	561	void inline_size
436	fd_change (EV_P_ int fd)	562	fd_change (EV_P_ int fd)
437	{	563	{
438	if (anfds [fd].reify)	564	if (expect_false (anfds [fd].reify))
439	return;	565	return;
440		566
441	anfds [fd].reify = 1;	567	anfds [fd].reify = 1;
442		568
443	++fdchangecnt;	569	++fdchangecnt;
444	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
445	fdchanges [fdchangecnt - 1] = fd;	571	fdchanges [fdchangecnt - 1] = fd;
446	}	572	}
447		573
448	static void	574	void inline_speed
449	fd_kill (EV_P_ int fd)	575	fd_kill (EV_P_ int fd)
450	{	576	{
451	struct ev_io *w;	577	ev_io *w;
452		578
453	while ((w = (struct ev_io *)anfds [fd].head))	579	while ((w = (ev_io *)anfds [fd].head))
454	{	580	{
455	ev_io_stop (EV_A_ w);	581	ev_io_stop (EV_A_ w);
456	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);
457	}	583	}
458	}	584	}
459		585
460	static int	586	int inline_size
461	fd_valid (int fd)	587	fd_valid (int fd)
462	{	588	{
463	#ifdef _WIN32	589	#ifdef _WIN32
464	return _get_osfhandle (fd) != -1;	590	return _get_osfhandle (fd) != -1;
465	#else	591	#else
466	return fcntl (fd, F_GETFD) != -1;	592	return fcntl (fd, F_GETFD) != -1;
467	#endif	593	#endif
468	}	594	}
469		595
470	/* called on EBADF to verify fds */	596	/* called on EBADF to verify fds */
471	static void	597	static void noinline
472	fd_ebadf (EV_P)	598	fd_ebadf (EV_P)
473	{	599	{
474	int fd;	600	int fd;
475		601
476	for (fd = 0; fd < anfdmax; ++fd)	602	for (fd = 0; fd < anfdmax; ++fd)
…		…
478	if (!fd_valid (fd) == -1 && errno == EBADF)	604	if (!fd_valid (fd) == -1 && errno == EBADF)
479	fd_kill (EV_A_ fd);	605	fd_kill (EV_A_ fd);
480	}	606	}
481		607
482	/* 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 */
483	static void	609	static void noinline
484	fd_enomem (EV_P)	610	fd_enomem (EV_P)
485	{	611	{
486	int fd;	612	int fd;
487		613
488	for (fd = anfdmax; fd--; )	614	for (fd = anfdmax; fd--; )
…		…
491	fd_kill (EV_A_ fd);	617	fd_kill (EV_A_ fd);
492	return;	618	return;
493	}	619	}
494	}	620	}
495		621
496	/* 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 */
497	static void	623	static void noinline
498	fd_rearm_all (EV_P)	624	fd_rearm_all (EV_P)
499	{	625	{
500	int fd;	626	int fd;
501		627
502	/* this should be highly optimised to not do anything but set a flag */
503	for (fd = 0; fd < anfdmax; ++fd)	628	for (fd = 0; fd < anfdmax; ++fd)
504	if (anfds [fd].events)	629	if (anfds [fd].events)
505	{	630	{
506	anfds [fd].events = 0;	631	anfds [fd].events = 0;
507	fd_change (EV_A_ fd);	632	fd_change (EV_A_ fd);
508	}	633	}
509	}	634	}
510		635
511	/*****************************************************************************/	636	/*****************************************************************************/
512		637
513	static void	638	void inline_speed
514	upheap (WT *heap, int k)	639	upheap (WT *heap, int k)
515	{	640	{
516	WT w = heap [k];	641	WT w = heap [k];
517		642
518	while (k && heap [k >> 1]->at > w->at)	643	while (k)
519	{	644	{
		645	int p = (k - 1) >> 1;
		646
		647	if (heap [p]->at <= w->at)
		648	break;
		649
520	heap [k] = heap [k >> 1];	650	heap [k] = heap [p];
521	((W)heap [k])->active = k + 1;	651	((W)heap [k])->active = k + 1;
522	k >>= 1;	652	k = p;
523	}	653	}
524		654
525	heap [k] = w;	655	heap [k] = w;
526	((W)heap [k])->active = k + 1;	656	((W)heap [k])->active = k + 1;
527		657
528	}	658	}
529		659
530	static void	660	void inline_speed
531	downheap (WT *heap, int N, int k)	661	downheap (WT *heap, int N, int k)
532	{	662	{
533	WT w = heap [k];	663	WT w = heap [k];
534		664
535	while (k < (N >> 1))	665	for (;;)
536	{	666	{
537	int j = k << 1;	667	int c = (k << 1) + 1;
538		668
539	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	669	if (c >= N)
540	++j;
541
542	if (w->at <= heap [j]->at)
543	break;	670	break;
544		671
		672	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		673	? 1 : 0;
		674
		675	if (w->at <= heap [c]->at)
		676	break;
		677
545	heap [k] = heap [j];	678	heap [k] = heap [c];
546	((W)heap [k])->active = k + 1;	679	((W)heap [k])->active = k + 1;
		680
547	k = j;	681	k = c;
548	}	682	}
549		683
550	heap [k] = w;	684	heap [k] = w;
551	((W)heap [k])->active = k + 1;	685	((W)heap [k])->active = k + 1;
552	}	686	}
553		687
554	inline void	688	void inline_size
555	adjustheap (WT *heap, int N, int k)	689	adjustheap (WT *heap, int N, int k)
556	{	690	{
557	upheap (heap, k);	691	upheap (heap, k);
558	downheap (heap, N, k);	692	downheap (heap, N, k);
559	}	693	}
…		…
569	static ANSIG *signals;	703	static ANSIG *signals;
570	static int signalmax;	704	static int signalmax;
571		705
572	static int sigpipe [2];	706	static int sigpipe [2];
573	static sig_atomic_t volatile gotsig;	707	static sig_atomic_t volatile gotsig;
574	static struct ev_io sigev;	708	static ev_io sigev;
575		709
576	static void	710	void inline_size
577	signals_init (ANSIG *base, int count)	711	signals_init (ANSIG *base, int count)
578	{	712	{
579	while (count--)	713	while (count--)
580	{	714	{
581	base->head = 0;	715	base->head = 0;
…		…
601	write (sigpipe [1], &signum, 1);	735	write (sigpipe [1], &signum, 1);
602	errno = old_errno;	736	errno = old_errno;
603	}	737	}
604	}	738	}
605		739
606	void	740	void noinline
607	ev_feed_signal_event (EV_P_ int signum)	741	ev_feed_signal_event (EV_P_ int signum)
608	{	742	{
609	WL w;	743	WL w;
610		744
611	#if EV_MULTIPLICITY	745	#if EV_MULTIPLICITY
612	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	746	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
613	#endif	747	#endif
614		748
615	--signum;	749	--signum;
616		750
617	if (signum < 0 || signum >= signalmax)	751	if (signum < 0 || signum >= signalmax)
…		…
622	for (w = signals [signum].head; w; w = w->next)	756	for (w = signals [signum].head; w; w = w->next)
623	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	757	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
624	}	758	}
625		759
626	static void	760	static void
627	sigcb (EV_P_ struct ev_io *iow, int revents)	761	sigcb (EV_P_ ev_io *iow, int revents)
628	{	762	{
629	int signum;	763	int signum;
630		764
631	read (sigpipe [0], &revents, 1);	765	read (sigpipe [0], &revents, 1);
632	gotsig = 0;	766	gotsig = 0;
…		…
634	for (signum = signalmax; signum--; )	768	for (signum = signalmax; signum--; )
635	if (signals [signum].gotsig)	769	if (signals [signum].gotsig)
636	ev_feed_signal_event (EV_A_ signum + 1);	770	ev_feed_signal_event (EV_A_ signum + 1);
637	}	771	}
638		772
639	inline void	773	void inline_speed
640	fd_intern (int fd)	774	fd_intern (int fd)
641	{	775	{
642	#ifdef _WIN32	776	#ifdef _WIN32
643	int arg = 1;	777	int arg = 1;
644	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	778	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
646	fcntl (fd, F_SETFD, FD_CLOEXEC);	780	fcntl (fd, F_SETFD, FD_CLOEXEC);
647	fcntl (fd, F_SETFL, O_NONBLOCK);	781	fcntl (fd, F_SETFL, O_NONBLOCK);
648	#endif	782	#endif
649	}	783	}
650		784
651	static void	785	static void noinline
652	siginit (EV_P)	786	siginit (EV_P)
653	{	787	{
654	fd_intern (sigpipe [0]);	788	fd_intern (sigpipe [0]);
655	fd_intern (sigpipe [1]);	789	fd_intern (sigpipe [1]);
656		790
…		…
659	ev_unref (EV_A); /* child watcher should not keep loop alive */	793	ev_unref (EV_A); /* child watcher should not keep loop alive */
660	}	794	}
661		795
662	/*****************************************************************************/	796	/*****************************************************************************/
663		797
664	static struct ev_child *childs [PID_HASHSIZE];	798	static ev_child *childs [EV_PID_HASHSIZE];
665		799
666	#ifndef _WIN32	800	#ifndef _WIN32
667		801
668	static struct ev_signal childev;	802	static ev_signal childev;
		803
		804	void inline_speed
		805	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		806	{
		807	ev_child *w;
		808
		809	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		810	if (w->pid == pid || !w->pid)
		811	{
		812	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		813	w->rpid = pid;
		814	w->rstatus = status;
		815	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		816	}
		817	}
669		818
670	#ifndef WCONTINUED	819	#ifndef WCONTINUED
671	# define WCONTINUED 0	820	# define WCONTINUED 0
672	#endif	821	#endif
673		822
674	static void	823	static void
675	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
676	{
677	struct ev_child *w;
678
679	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
680	if (w->pid == pid || !w->pid)
681	{
682	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
683	w->rpid = pid;
684	w->rstatus = status;
685	ev_feed_event (EV_A_ (W)w, EV_CHILD);
686	}
687	}
688
689	static void
690	childcb (EV_P_ struct ev_signal *sw, int revents)	824	childcb (EV_P_ ev_signal *sw, int revents)
691	{	825	{
692	int pid, status;	826	int pid, status;
693		827
		828	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
694	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	829	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
695	{	830	if (!WCONTINUED
		831	|| errno != EINVAL
		832	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		833	return;
		834
696	/* make sure we are called again until all childs have been reaped */	835	/* make sure we are called again until all childs have been reaped */
		836	/* we need to do it this way so that the callback gets called before we continue */
697	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	837	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
698		838
699	child_reap (EV_A_ sw, pid, pid, status);	839	child_reap (EV_A_ sw, pid, pid, status);
		840	if (EV_PID_HASHSIZE > 1)
700	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	841	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
701	}
702	}	842	}
703		843
704	#endif	844	#endif
705		845
706	/*****************************************************************************/	846	/*****************************************************************************/
707		847
		848	#if EV_USE_PORT
		849	# include "ev_port.c"
		850	#endif
708	#if EV_USE_KQUEUE	851	#if EV_USE_KQUEUE
709	# include "ev_kqueue.c"	852	# include "ev_kqueue.c"
710	#endif	853	#endif
711	#if EV_USE_EPOLL	854	#if EV_USE_EPOLL
712	# include "ev_epoll.c"	855	# include "ev_epoll.c"
…		…
729	{	872	{
730	return EV_VERSION_MINOR;	873	return EV_VERSION_MINOR;
731	}	874	}
732		875
733	/* return true if we are running with elevated privileges and should ignore env variables */	876	/* return true if we are running with elevated privileges and should ignore env variables */
734	static int	877	int inline_size
735	enable_secure (void)	878	enable_secure (void)
736	{	879	{
737	#ifdef _WIN32	880	#ifdef _WIN32
738	return 0;	881	return 0;
739	#else	882	#else
740	return getuid () != geteuid ()	883	return getuid () != geteuid ()
741	|| getgid () != getegid ();	884	|| getgid () != getegid ();
742	#endif	885	#endif
743	}	886	}
744		887
745	int	888	unsigned int
746	ev_method (EV_P)	889	ev_supported_backends (void)
747	{	890	{
748	return method;	891	unsigned int flags = 0;
749	}
750		892
751	static void	893	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
752	loop_init (EV_P_ int methods)	894	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		895	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		896	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		897	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		898
		899	return flags;
		900	}
		901
		902	unsigned int
		903	ev_recommended_backends (void)
753	{	904	{
754	if (!method)	905	unsigned int flags = ev_supported_backends ();
		906
		907	#ifndef __NetBSD__
		908	/* kqueue is borked on everything but netbsd apparently */
		909	/* it usually doesn't work correctly on anything but sockets and pipes */
		910	flags &= ~EVBACKEND_KQUEUE;
		911	#endif
		912	#ifdef __APPLE__
		913	// flags &= ~EVBACKEND_KQUEUE; for documentation
		914	flags &= ~EVBACKEND_POLL;
		915	#endif
		916
		917	return flags;
		918	}
		919
		920	unsigned int
		921	ev_embeddable_backends (void)
		922	{
		923	return EVBACKEND_EPOLL
		924	| EVBACKEND_KQUEUE
		925	| EVBACKEND_PORT;
		926	}
		927
		928	unsigned int
		929	ev_backend (EV_P)
		930	{
		931	return backend;
		932	}
		933
		934	unsigned int
		935	ev_loop_count (EV_P)
		936	{
		937	return loop_count;
		938	}
		939
		940	static void noinline
		941	loop_init (EV_P_ unsigned int flags)
		942	{
		943	if (!backend)
755	{	944	{
756	#if EV_USE_MONOTONIC	945	#if EV_USE_MONOTONIC
757	{	946	{
758	struct timespec ts;	947	struct timespec ts;
759	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	948	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
764	ev_rt_now = ev_time ();	953	ev_rt_now = ev_time ();
765	mn_now = get_clock ();	954	mn_now = get_clock ();
766	now_floor = mn_now;	955	now_floor = mn_now;
767	rtmn_diff = ev_rt_now - mn_now;	956	rtmn_diff = ev_rt_now - mn_now;
768		957
769	if (methods == EVMETHOD_AUTO)	958	/* pid check not overridable via env */
770	if (!enable_secure () && getenv ("LIBEV_METHODS"))	959	#ifndef _WIN32
		960	if (flags & EVFLAG_FORKCHECK)
		961	curpid = getpid ();
		962	#endif
		963
		964	if (!(flags & EVFLAG_NOENV)
		965	&& !enable_secure ()
		966	&& getenv ("LIBEV_FLAGS"))
771	methods = atoi (getenv ("LIBEV_METHODS"));	967	flags = atoi (getenv ("LIBEV_FLAGS"));
772	else
773	methods = EVMETHOD_ANY;
774		968
775	method = 0;	969	if (!(flags & 0x0000ffffUL))
		970	flags |= ev_recommended_backends ();
		971
		972	backend = 0;
		973	backend_fd = -1;
		974	#if EV_USE_INOTIFY
		975	fs_fd = -2;
		976	#endif
		977
		978	#if EV_USE_PORT
		979	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		980	#endif
776	#if EV_USE_KQUEUE	981	#if EV_USE_KQUEUE
777	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	982	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
778	#endif	983	#endif
779	#if EV_USE_EPOLL	984	#if EV_USE_EPOLL
780	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	985	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
781	#endif	986	#endif
782	#if EV_USE_POLL	987	#if EV_USE_POLL
783	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	988	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
784	#endif	989	#endif
785	#if EV_USE_SELECT	990	#if EV_USE_SELECT
786	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	991	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
787	#endif	992	#endif
788		993
789	ev_init (&sigev, sigcb);	994	ev_init (&sigev, sigcb);
790	ev_set_priority (&sigev, EV_MAXPRI);	995	ev_set_priority (&sigev, EV_MAXPRI);
791	}	996	}
792	}	997	}
793		998
794	void	999	static void noinline
795	loop_destroy (EV_P)	1000	loop_destroy (EV_P)
796	{	1001	{
797	int i;	1002	int i;
798		1003
		1004	#if EV_USE_INOTIFY
		1005	if (fs_fd >= 0)
		1006	close (fs_fd);
		1007	#endif
		1008
		1009	if (backend_fd >= 0)
		1010	close (backend_fd);
		1011
		1012	#if EV_USE_PORT
		1013	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		1014	#endif
799	#if EV_USE_KQUEUE	1015	#if EV_USE_KQUEUE
800	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1016	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
801	#endif	1017	#endif
802	#if EV_USE_EPOLL	1018	#if EV_USE_EPOLL
803	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1019	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
804	#endif	1020	#endif
805	#if EV_USE_POLL	1021	#if EV_USE_POLL
806	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1022	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
807	#endif	1023	#endif
808	#if EV_USE_SELECT	1024	#if EV_USE_SELECT
809	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1025	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
810	#endif	1026	#endif
811		1027
812	for (i = NUMPRI; i--; )	1028	for (i = NUMPRI; i--; )
		1029	{
813	array_free (pending, [i]);	1030	array_free (pending, [i]);
		1031	#if EV_IDLE_ENABLE
		1032	array_free (idle, [i]);
		1033	#endif
		1034	}
814		1035
815	/* have to use the microsoft-never-gets-it-right macro */	1036	/* have to use the microsoft-never-gets-it-right macro */
816	array_free (fdchange, EMPTY);	1037	array_free (fdchange, EMPTY);
817	array_free (timer, EMPTY);	1038	array_free (timer, EMPTY);
818	#if EV_PERIODICS	1039	#if EV_PERIODIC_ENABLE
819	array_free (periodic, EMPTY);	1040	array_free (periodic, EMPTY);
820	#endif	1041	#endif
821	array_free (idle, EMPTY);
822	array_free (prepare, EMPTY);	1042	array_free (prepare, EMPTY);
823	array_free (check, EMPTY);	1043	array_free (check, EMPTY);
824		1044
825	method = 0;	1045	backend = 0;
826	}	1046	}
827		1047
828	static void	1048	void inline_size infy_fork (EV_P);
		1049
		1050	void inline_size
829	loop_fork (EV_P)	1051	loop_fork (EV_P)
830	{	1052	{
		1053	#if EV_USE_PORT
		1054	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1055	#endif
		1056	#if EV_USE_KQUEUE
		1057	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1058	#endif
831	#if EV_USE_EPOLL	1059	#if EV_USE_EPOLL
832	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1060	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
833	#endif	1061	#endif
834	#if EV_USE_KQUEUE	1062	#if EV_USE_INOTIFY
835	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1063	infy_fork (EV_A);
836	#endif	1064	#endif
837		1065
838	if (ev_is_active (&sigev))	1066	if (ev_is_active (&sigev))
839	{	1067	{
840	/* default loop */	1068	/* default loop */
…		…
853	postfork = 0;	1081	postfork = 0;
854	}	1082	}
855		1083
856	#if EV_MULTIPLICITY	1084	#if EV_MULTIPLICITY
857	struct ev_loop *	1085	struct ev_loop *
858	ev_loop_new (int methods)	1086	ev_loop_new (unsigned int flags)
859	{	1087	{
860	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1088	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
861		1089
862	memset (loop, 0, sizeof (struct ev_loop));	1090	memset (loop, 0, sizeof (struct ev_loop));
863		1091
864	loop_init (EV_A_ methods);	1092	loop_init (EV_A_ flags);
865		1093
866	if (ev_method (EV_A))	1094	if (ev_backend (EV_A))
867	return loop;	1095	return loop;
868		1096
869	return 0;	1097	return 0;
870	}	1098	}
871		1099
…		…
884		1112
885	#endif	1113	#endif
886		1114
887	#if EV_MULTIPLICITY	1115	#if EV_MULTIPLICITY
888	struct ev_loop *	1116	struct ev_loop *
		1117	ev_default_loop_init (unsigned int flags)
889	#else	1118	#else
890	int	1119	int
		1120	ev_default_loop (unsigned int flags)
891	#endif	1121	#endif
892	ev_default_loop (int methods)
893	{	1122	{
894	if (sigpipe [0] == sigpipe [1])	1123	if (sigpipe [0] == sigpipe [1])
895	if (pipe (sigpipe))	1124	if (pipe (sigpipe))
896	return 0;	1125	return 0;
897		1126
898	if (!default_loop)	1127	if (!ev_default_loop_ptr)
899	{	1128	{
900	#if EV_MULTIPLICITY	1129	#if EV_MULTIPLICITY
901	struct ev_loop *loop = default_loop = &default_loop_struct;	1130	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
902	#else	1131	#else
903	default_loop = 1;	1132	ev_default_loop_ptr = 1;
904	#endif	1133	#endif
905		1134
906	loop_init (EV_A_ methods);	1135	loop_init (EV_A_ flags);
907		1136
908	if (ev_method (EV_A))	1137	if (ev_backend (EV_A))
909	{	1138	{
910	siginit (EV_A);	1139	siginit (EV_A);
911		1140
912	#ifndef _WIN32	1141	#ifndef _WIN32
913	ev_signal_init (&childev, childcb, SIGCHLD);	1142	ev_signal_init (&childev, childcb, SIGCHLD);
…		…
915	ev_signal_start (EV_A_ &childev);	1144	ev_signal_start (EV_A_ &childev);
916	ev_unref (EV_A); /* child watcher should not keep loop alive */	1145	ev_unref (EV_A); /* child watcher should not keep loop alive */
917	#endif	1146	#endif
918	}	1147	}
919	else	1148	else
920	default_loop = 0;	1149	ev_default_loop_ptr = 0;
921	}	1150	}
922		1151
923	return default_loop;	1152	return ev_default_loop_ptr;
924	}	1153	}
925		1154
926	void	1155	void
927	ev_default_destroy (void)	1156	ev_default_destroy (void)
928	{	1157	{
929	#if EV_MULTIPLICITY	1158	#if EV_MULTIPLICITY
930	struct ev_loop *loop = default_loop;	1159	struct ev_loop *loop = ev_default_loop_ptr;
931	#endif	1160	#endif
932		1161
933	#ifndef _WIN32	1162	#ifndef _WIN32
934	ev_ref (EV_A); /* child watcher */	1163	ev_ref (EV_A); /* child watcher */
935	ev_signal_stop (EV_A_ &childev);	1164	ev_signal_stop (EV_A_ &childev);
…		…
946		1175
947	void	1176	void
948	ev_default_fork (void)	1177	ev_default_fork (void)
949	{	1178	{
950	#if EV_MULTIPLICITY	1179	#if EV_MULTIPLICITY
951	struct ev_loop *loop = default_loop;	1180	struct ev_loop *loop = ev_default_loop_ptr;
952	#endif	1181	#endif
953		1182
954	if (method)	1183	if (backend)
955	postfork = 1;	1184	postfork = 1;
956	}	1185	}
957		1186
958	/*****************************************************************************/	1187	/*****************************************************************************/
959		1188
960	static int	1189	void
961	any_pending (EV_P)	1190	ev_invoke (EV_P_ void *w, int revents)
962	{	1191	{
963	int pri;	1192	EV_CB_INVOKE ((W)w, revents);
964
965	for (pri = NUMPRI; pri--; )
966	if (pendingcnt [pri])
967	return 1;
968
969	return 0;
970	}	1193	}
971		1194
972	static void	1195	void inline_speed
973	call_pending (EV_P)	1196	call_pending (EV_P)
974	{	1197	{
975	int pri;	1198	int pri;
976		1199
977	for (pri = NUMPRI; pri--; )	1200	for (pri = NUMPRI; pri--; )
978	while (pendingcnt [pri])	1201	while (pendingcnt [pri])
979	{	1202	{
980	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1203	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
981		1204
982	if (p->w)	1205	if (expect_true (p->w))
983	{	1206	{
		1207	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1208
984	p->w->pending = 0;	1209	p->w->pending = 0;
985	EV_CB_INVOKE (p->w, p->events);	1210	EV_CB_INVOKE (p->w, p->events);
986	}	1211	}
987	}	1212	}
988	}	1213	}
989		1214
990	static void	1215	void inline_size
991	timers_reify (EV_P)	1216	timers_reify (EV_P)
992	{	1217	{
993	while (timercnt && ((WT)timers [0])->at <= mn_now)	1218	while (timercnt && ((WT)timers [0])->at <= mn_now)
994	{	1219	{
995	struct ev_timer *w = timers [0];	1220	ev_timer *w = timers [0];
996		1221
997	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1222	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
998		1223
999	/* first reschedule or stop timer */	1224	/* first reschedule or stop timer */
1000	if (w->repeat)	1225	if (w->repeat)
1001	{	1226	{
1002	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1227	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
…		…
1012		1237
1013	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1238	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1014	}	1239	}
1015	}	1240	}
1016		1241
1017	#if EV_PERIODICS	1242	#if EV_PERIODIC_ENABLE
1018	static void	1243	void inline_size
1019	periodics_reify (EV_P)	1244	periodics_reify (EV_P)
1020	{	1245	{
1021	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1246	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1022	{	1247	{
1023	struct ev_periodic *w = periodics [0];	1248	ev_periodic *w = periodics [0];
1024		1249
1025	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1250	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1026		1251
1027	/* first reschedule or stop timer */	1252	/* first reschedule or stop timer */
1028	if (w->reschedule_cb)	1253	if (w->reschedule_cb)
1029	{	1254	{
1030	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1255	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1031
1032	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1256	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1033	downheap ((WT *)periodics, periodiccnt, 0);	1257	downheap ((WT *)periodics, periodiccnt, 0);
1034	}	1258	}
1035	else if (w->interval)	1259	else if (w->interval)
1036	{	1260	{
1037	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1261	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1262	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1038	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1263	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1039	downheap ((WT *)periodics, periodiccnt, 0);	1264	downheap ((WT *)periodics, periodiccnt, 0);
1040	}	1265	}
1041	else	1266	else
1042	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1267	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1043		1268
1044	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1269	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1045	}	1270	}
1046	}	1271	}
1047		1272
1048	static void	1273	static void noinline
1049	periodics_reschedule (EV_P)	1274	periodics_reschedule (EV_P)
1050	{	1275	{
1051	int i;	1276	int i;
1052		1277
1053	/* adjust periodics after time jump */	1278	/* adjust periodics after time jump */
1054	for (i = 0; i < periodiccnt; ++i)	1279	for (i = 0; i < periodiccnt; ++i)
1055	{	1280	{
1056	struct ev_periodic *w = periodics [i];	1281	ev_periodic *w = periodics [i];
1057		1282
1058	if (w->reschedule_cb)	1283	if (w->reschedule_cb)
1059	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1284	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1060	else if (w->interval)	1285	else if (w->interval)
1061	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1286	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1062	}	1287	}
1063		1288
1064	/* now rebuild the heap */	1289	/* now rebuild the heap */
1065	for (i = periodiccnt >> 1; i--; )	1290	for (i = periodiccnt >> 1; i--; )
1066	downheap ((WT *)periodics, periodiccnt, i);	1291	downheap ((WT *)periodics, periodiccnt, i);
1067	}	1292	}
1068	#endif	1293	#endif
1069		1294
1070	inline int	1295	#if EV_IDLE_ENABLE
1071	time_update_monotonic (EV_P)	1296	void inline_size
		1297	idle_reify (EV_P)
1072	{	1298	{
		1299	if (expect_false (idleall))
		1300	{
		1301	int pri;
		1302
		1303	for (pri = NUMPRI; pri--; )
		1304	{
		1305	if (pendingcnt [pri])
		1306	break;
		1307
		1308	if (idlecnt [pri])
		1309	{
		1310	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1311	break;
		1312	}
		1313	}
		1314	}
		1315	}
		1316	#endif
		1317
		1318	void inline_speed
		1319	time_update (EV_P_ ev_tstamp max_block)
		1320	{
		1321	int i;
		1322
		1323	#if EV_USE_MONOTONIC
		1324	if (expect_true (have_monotonic))
		1325	{
		1326	ev_tstamp odiff = rtmn_diff;
		1327
1073	mn_now = get_clock ();	1328	mn_now = get_clock ();
1074		1329
		1330	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1331	/* interpolate in the meantime */
1075	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1332	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1076	{	1333	{
1077	ev_rt_now = rtmn_diff + mn_now;	1334	ev_rt_now = rtmn_diff + mn_now;
1078	return 0;	1335	return;
1079	}	1336	}
1080	else	1337
1081	{
1082	now_floor = mn_now;	1338	now_floor = mn_now;
1083	ev_rt_now = ev_time ();	1339	ev_rt_now = ev_time ();
1084	return 1;
1085	}
1086	}
1087		1340
1088	static void	1341	/* loop a few times, before making important decisions.
1089	time_update (EV_P)	1342	* on the choice of "4": one iteration isn't enough,
1090	{	1343	* in case we get preempted during the calls to
1091	int i;	1344	* ev_time and get_clock. a second call is almost guaranteed
1092		1345	* to succeed in that case, though. and looping a few more times
1093	#if EV_USE_MONOTONIC	1346	* doesn't hurt either as we only do this on time-jumps or
1094	if (expect_true (have_monotonic))	1347	* in the unlikely event of having been preempted here.
1095	{	1348	*/
1096	if (time_update_monotonic (EV_A))	1349	for (i = 4; --i; )
1097	{	1350	{
1098	ev_tstamp odiff = rtmn_diff;
1099
1100	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1101	{
1102	rtmn_diff = ev_rt_now - mn_now;	1351	rtmn_diff = ev_rt_now - mn_now;
1103		1352
1104	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1353	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1105	return; /* all is well */	1354	return; /* all is well */
1106		1355
1107	ev_rt_now = ev_time ();	1356	ev_rt_now = ev_time ();
1108	mn_now = get_clock ();	1357	mn_now = get_clock ();
1109	now_floor = mn_now;	1358	now_floor = mn_now;
1110	}	1359	}
1111		1360
1112	# if EV_PERIODICS	1361	# if EV_PERIODIC_ENABLE
		1362	periodics_reschedule (EV_A);
		1363	# endif
		1364	/* no timer adjustment, as the monotonic clock doesn't jump */
		1365	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1366	}
		1367	else
		1368	#endif
		1369	{
		1370	ev_rt_now = ev_time ();
		1371
		1372	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1373	{
		1374	#if EV_PERIODIC_ENABLE
1113	periodics_reschedule (EV_A);	1375	periodics_reschedule (EV_A);
1114	# endif	1376	#endif
1115	/* no timer adjustment, as the monotonic clock doesn't jump */
1116	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1117	}
1118	}
1119	else
1120	#endif
1121	{
1122	ev_rt_now = ev_time ();
1123
1124	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1125	{
1126	#if EV_PERIODICS
1127	periodics_reschedule (EV_A);
1128	#endif
1129
1130	/* adjust timers. this is easy, as the offset is the same for all */	1377	/* adjust timers. this is easy, as the offset is the same for all of them */
1131	for (i = 0; i < timercnt; ++i)	1378	for (i = 0; i < timercnt; ++i)
1132	((WT)timers [i])->at += ev_rt_now - mn_now;	1379	((WT)timers [i])->at += ev_rt_now - mn_now;
1133	}	1380	}
1134		1381
1135	mn_now = ev_rt_now;	1382	mn_now = ev_rt_now;
…		…
1151	static int loop_done;	1398	static int loop_done;
1152		1399
1153	void	1400	void
1154	ev_loop (EV_P_ int flags)	1401	ev_loop (EV_P_ int flags)
1155	{	1402	{
1156	double block;
1157	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1403	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1404	? EVUNLOOP_ONE
		1405	: EVUNLOOP_CANCEL;
		1406
		1407	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1158		1408
1159	do	1409	do
1160	{	1410	{
		1411	#ifndef _WIN32
		1412	if (expect_false (curpid)) /* penalise the forking check even more */
		1413	if (expect_false (getpid () != curpid))
		1414	{
		1415	curpid = getpid ();
		1416	postfork = 1;
		1417	}
		1418	#endif
		1419
		1420	#if EV_FORK_ENABLE
		1421	/* we might have forked, so queue fork handlers */
		1422	if (expect_false (postfork))
		1423	if (forkcnt)
		1424	{
		1425	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1426	call_pending (EV_A);
		1427	}
		1428	#endif
		1429
1161	/* queue check watchers (and execute them) */	1430	/* queue prepare watchers (and execute them) */
1162	if (expect_false (preparecnt))	1431	if (expect_false (preparecnt))
1163	{	1432	{
1164	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1433	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1165	call_pending (EV_A);	1434	call_pending (EV_A);
1166	}	1435	}
1167		1436
		1437	if (expect_false (!activecnt))
		1438	break;
		1439
1168	/* we might have forked, so reify kernel state if necessary */	1440	/* we might have forked, so reify kernel state if necessary */
1169	if (expect_false (postfork))	1441	if (expect_false (postfork))
1170	loop_fork (EV_A);	1442	loop_fork (EV_A);
1171		1443
1172	/* update fd-related kernel structures */	1444	/* update fd-related kernel structures */
1173	fd_reify (EV_A);	1445	fd_reify (EV_A);
1174		1446
1175	/* calculate blocking time */	1447	/* calculate blocking time */
		1448	{
		1449	ev_tstamp block;
1176		1450
1177	/* we only need this for !monotonic clock or timers, but as we basically	1451	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1178	always have timers, we just calculate it always */	1452	block = 0.; /* do not block at all */
1179	#if EV_USE_MONOTONIC
1180	if (expect_true (have_monotonic))
1181	time_update_monotonic (EV_A);
1182	else	1453	else
1183	#endif
1184	{	1454	{
1185	ev_rt_now = ev_time ();	1455	/* update time to cancel out callback processing overhead */
1186	mn_now = ev_rt_now;	1456	time_update (EV_A_ 1e100);
1187	}
1188		1457
1189	if (flags & EVLOOP_NONBLOCK || idlecnt)
1190	block = 0.;
1191	else
1192	{
1193	block = MAX_BLOCKTIME;	1458	block = MAX_BLOCKTIME;
1194		1459
1195	if (timercnt)	1460	if (timercnt)
1196	{	1461	{
1197	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1462	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1198	if (block > to) block = to;	1463	if (block > to) block = to;
1199	}	1464	}
1200		1465
1201	#if EV_PERIODICS	1466	#if EV_PERIODIC_ENABLE
1202	if (periodiccnt)	1467	if (periodiccnt)
1203	{	1468	{
1204	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1469	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1205	if (block > to) block = to;	1470	if (block > to) block = to;
1206	}	1471	}
1207	#endif	1472	#endif
1208		1473
1209	if (block < 0.) block = 0.;	1474	if (expect_false (block < 0.)) block = 0.;
1210	}	1475	}
1211		1476
		1477	++loop_count;
1212	method_poll (EV_A_ block);	1478	backend_poll (EV_A_ block);
1213		1479
1214	/* update ev_rt_now, do magic */	1480	/* update ev_rt_now, do magic */
1215	time_update (EV_A);	1481	time_update (EV_A_ block);
		1482	}
1216		1483
1217	/* queue pending timers and reschedule them */	1484	/* queue pending timers and reschedule them */
1218	timers_reify (EV_A); /* relative timers called last */	1485	timers_reify (EV_A); /* relative timers called last */
1219	#if EV_PERIODICS	1486	#if EV_PERIODIC_ENABLE
1220	periodics_reify (EV_A); /* absolute timers called first */	1487	periodics_reify (EV_A); /* absolute timers called first */
1221	#endif	1488	#endif
1222		1489
		1490	#if EV_IDLE_ENABLE
1223	/* queue idle watchers unless io or timers are pending */	1491	/* queue idle watchers unless other events are pending */
1224	if (idlecnt && !any_pending (EV_A))	1492	idle_reify (EV_A);
1225	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1493	#endif
1226		1494
1227	/* queue check watchers, to be executed first */	1495	/* queue check watchers, to be executed first */
1228	if (checkcnt)	1496	if (expect_false (checkcnt))
1229	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1497	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1230		1498
1231	call_pending (EV_A);	1499	call_pending (EV_A);
		1500
1232	}	1501	}
1233	while (activecnt && !loop_done);	1502	while (expect_true (activecnt && !loop_done));
1234		1503
1235	if (loop_done != 2)	1504	if (loop_done == EVUNLOOP_ONE)
1236	loop_done = 0;	1505	loop_done = EVUNLOOP_CANCEL;
1237	}	1506	}
1238		1507
1239	void	1508	void
1240	ev_unloop (EV_P_ int how)	1509	ev_unloop (EV_P_ int how)
1241	{	1510	{
1242	loop_done = how;	1511	loop_done = how;
1243	}	1512	}
1244		1513
1245	/*****************************************************************************/	1514	/*****************************************************************************/
1246		1515
1247	inline void	1516	void inline_size
1248	wlist_add (WL *head, WL elem)	1517	wlist_add (WL *head, WL elem)
1249	{	1518	{
1250	elem->next = *head;	1519	elem->next = *head;
1251	*head = elem;	1520	*head = elem;
1252	}	1521	}
1253		1522
1254	inline void	1523	void inline_size
1255	wlist_del (WL *head, WL elem)	1524	wlist_del (WL *head, WL elem)
1256	{	1525	{
1257	while (*head)	1526	while (*head)
1258	{	1527	{
1259	if (*head == elem)	1528	if (*head == elem)
…		…
1264		1533
1265	head = &(*head)->next;	1534	head = &(*head)->next;
1266	}	1535	}
1267	}	1536	}
1268		1537
1269	inline void	1538	void inline_speed
1270	ev_clear_pending (EV_P_ W w)	1539	clear_pending (EV_P_ W w)
1271	{	1540	{
1272	if (w->pending)	1541	if (w->pending)
1273	{	1542	{
1274	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1543	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1275	w->pending = 0;	1544	w->pending = 0;
1276	}	1545	}
1277	}	1546	}
1278		1547
1279	inline void	1548	int
		1549	ev_clear_pending (EV_P_ void *w)
		1550	{
		1551	W w_ = (W)w;
		1552	int pending = w_->pending;
		1553
		1554	if (expect_true (pending))
		1555	{
		1556	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1557	w_->pending = 0;
		1558	p->w = 0;
		1559	return p->events;
		1560	}
		1561	else
		1562	return 0;
		1563	}
		1564
		1565	void inline_size
		1566	pri_adjust (EV_P_ W w)
		1567	{
		1568	int pri = w->priority;
		1569	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1570	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1571	w->priority = pri;
		1572	}
		1573
		1574	void inline_speed
1280	ev_start (EV_P_ W w, int active)	1575	ev_start (EV_P_ W w, int active)
1281	{	1576	{
1282	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1577	pri_adjust (EV_A_ w);
1283	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1284
1285	w->active = active;	1578	w->active = active;
1286	ev_ref (EV_A);	1579	ev_ref (EV_A);
1287	}	1580	}
1288		1581
1289	inline void	1582	void inline_size
1290	ev_stop (EV_P_ W w)	1583	ev_stop (EV_P_ W w)
1291	{	1584	{
1292	ev_unref (EV_A);	1585	ev_unref (EV_A);
1293	w->active = 0;	1586	w->active = 0;
1294	}	1587	}
1295		1588
1296	/*****************************************************************************/	1589	/*****************************************************************************/
1297		1590
1298	void	1591	void noinline
1299	ev_io_start (EV_P_ struct ev_io *w)	1592	ev_io_start (EV_P_ ev_io *w)
1300	{	1593	{
1301	int fd = w->fd;	1594	int fd = w->fd;
1302		1595
1303	if (ev_is_active (w))	1596	if (expect_false (ev_is_active (w)))
1304	return;	1597	return;
1305		1598
1306	assert (("ev_io_start called with negative fd", fd >= 0));	1599	assert (("ev_io_start called with negative fd", fd >= 0));
1307		1600
1308	ev_start (EV_A_ (W)w, 1);	1601	ev_start (EV_A_ (W)w, 1);
…		…
1310	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1603	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1311		1604
1312	fd_change (EV_A_ fd);	1605	fd_change (EV_A_ fd);
1313	}	1606	}
1314		1607
1315	void	1608	void noinline
1316	ev_io_stop (EV_P_ struct ev_io *w)	1609	ev_io_stop (EV_P_ ev_io *w)
1317	{	1610	{
1318	ev_clear_pending (EV_A_ (W)w);	1611	clear_pending (EV_A_ (W)w);
1319	if (!ev_is_active (w))	1612	if (expect_false (!ev_is_active (w)))
1320	return;	1613	return;
1321		1614
1322	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1615	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1323		1616
1324	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1617	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1325	ev_stop (EV_A_ (W)w);	1618	ev_stop (EV_A_ (W)w);
1326		1619
1327	fd_change (EV_A_ w->fd);	1620	fd_change (EV_A_ w->fd);
1328	}	1621	}
1329		1622
1330	void	1623	void noinline
1331	ev_timer_start (EV_P_ struct ev_timer *w)	1624	ev_timer_start (EV_P_ ev_timer *w)
1332	{	1625	{
1333	if (ev_is_active (w))	1626	if (expect_false (ev_is_active (w)))
1334	return;	1627	return;
1335		1628
1336	((WT)w)->at += mn_now;	1629	((WT)w)->at += mn_now;
1337		1630
1338	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1631	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1339		1632
1340	ev_start (EV_A_ (W)w, ++timercnt);	1633	ev_start (EV_A_ (W)w, ++timercnt);
1341	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1634	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1342	timers [timercnt - 1] = w;	1635	timers [timercnt - 1] = w;
1343	upheap ((WT *)timers, timercnt - 1);	1636	upheap ((WT *)timers, timercnt - 1);
1344		1637
		1638	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1639	}
		1640
		1641	void noinline
		1642	ev_timer_stop (EV_P_ ev_timer *w)
		1643	{
		1644	clear_pending (EV_A_ (W)w);
		1645	if (expect_false (!ev_is_active (w)))
		1646	return;
		1647
1345	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1648	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1346	}
1347		1649
1348	void	1650	{
1349	ev_timer_stop (EV_P_ struct ev_timer *w)	1651	int active = ((W)w)->active;
1350	{
1351	ev_clear_pending (EV_A_ (W)w);
1352	if (!ev_is_active (w))
1353	return;
1354		1652
1355	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1653	if (expect_true (--active < --timercnt))
1356
1357	if (((W)w)->active < timercnt--)
1358	{	1654	{
1359	timers [((W)w)->active - 1] = timers [timercnt];	1655	timers [active] = timers [timercnt];
1360	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1656	adjustheap ((WT *)timers, timercnt, active);
1361	}	1657	}
		1658	}
1362		1659
1363	((WT)w)->at -= mn_now;	1660	((WT)w)->at -= mn_now;
1364		1661
1365	ev_stop (EV_A_ (W)w);	1662	ev_stop (EV_A_ (W)w);
1366	}	1663	}
1367		1664
1368	void	1665	void noinline
1369	ev_timer_again (EV_P_ struct ev_timer *w)	1666	ev_timer_again (EV_P_ ev_timer *w)
1370	{	1667	{
1371	if (ev_is_active (w))	1668	if (ev_is_active (w))
1372	{	1669	{
1373	if (w->repeat)	1670	if (w->repeat)
1374	{	1671	{
…		…
1377	}	1674	}
1378	else	1675	else
1379	ev_timer_stop (EV_A_ w);	1676	ev_timer_stop (EV_A_ w);
1380	}	1677	}
1381	else if (w->repeat)	1678	else if (w->repeat)
		1679	{
		1680	w->at = w->repeat;
1382	ev_timer_start (EV_A_ w);	1681	ev_timer_start (EV_A_ w);
		1682	}
1383	}	1683	}
1384		1684
1385	#if EV_PERIODICS	1685	#if EV_PERIODIC_ENABLE
1386	void	1686	void noinline
1387	ev_periodic_start (EV_P_ struct ev_periodic *w)	1687	ev_periodic_start (EV_P_ ev_periodic *w)
1388	{	1688	{
1389	if (ev_is_active (w))	1689	if (expect_false (ev_is_active (w)))
1390	return;	1690	return;
1391		1691
1392	if (w->reschedule_cb)	1692	if (w->reschedule_cb)
1393	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1693	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1394	else if (w->interval)	1694	else if (w->interval)
1395	{	1695	{
1396	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1696	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1397	/* this formula differs from the one in periodic_reify because we do not always round up */	1697	/* this formula differs from the one in periodic_reify because we do not always round up */
1398	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1698	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1399	}	1699	}
		1700	else
		1701	((WT)w)->at = w->offset;
1400		1702
1401	ev_start (EV_A_ (W)w, ++periodiccnt);	1703	ev_start (EV_A_ (W)w, ++periodiccnt);
1402	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1704	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1403	periodics [periodiccnt - 1] = w;	1705	periodics [periodiccnt - 1] = w;
1404	upheap ((WT *)periodics, periodiccnt - 1);	1706	upheap ((WT *)periodics, periodiccnt - 1);
1405		1707
		1708	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1709	}
		1710
		1711	void noinline
		1712	ev_periodic_stop (EV_P_ ev_periodic *w)
		1713	{
		1714	clear_pending (EV_A_ (W)w);
		1715	if (expect_false (!ev_is_active (w)))
		1716	return;
		1717
1406	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1718	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1407	}
1408		1719
1409	void	1720	{
1410	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1721	int active = ((W)w)->active;
1411	{
1412	ev_clear_pending (EV_A_ (W)w);
1413	if (!ev_is_active (w))
1414	return;
1415		1722
1416	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1723	if (expect_true (--active < --periodiccnt))
1417
1418	if (((W)w)->active < periodiccnt--)
1419	{	1724	{
1420	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1725	periodics [active] = periodics [periodiccnt];
1421	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1726	adjustheap ((WT *)periodics, periodiccnt, active);
1422	}	1727	}
		1728	}
1423		1729
1424	ev_stop (EV_A_ (W)w);	1730	ev_stop (EV_A_ (W)w);
1425	}	1731	}
1426		1732
1427	void	1733	void noinline
1428	ev_periodic_again (EV_P_ struct ev_periodic *w)	1734	ev_periodic_again (EV_P_ ev_periodic *w)
1429	{	1735	{
1430	/* TODO: use adjustheap and recalculation */	1736	/* TODO: use adjustheap and recalculation */
1431	ev_periodic_stop (EV_A_ w);	1737	ev_periodic_stop (EV_A_ w);
1432	ev_periodic_start (EV_A_ w);	1738	ev_periodic_start (EV_A_ w);
1433	}	1739	}
1434	#endif	1740	#endif
1435		1741
1436	void
1437	ev_idle_start (EV_P_ struct ev_idle *w)
1438	{
1439	if (ev_is_active (w))
1440	return;
1441
1442	ev_start (EV_A_ (W)w, ++idlecnt);
1443	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1444	idles [idlecnt - 1] = w;
1445	}
1446
1447	void
1448	ev_idle_stop (EV_P_ struct ev_idle *w)
1449	{
1450	ev_clear_pending (EV_A_ (W)w);
1451	if (!ev_is_active (w))
1452	return;
1453
1454	idles [((W)w)->active - 1] = idles [--idlecnt];
1455	ev_stop (EV_A_ (W)w);
1456	}
1457
1458	void
1459	ev_prepare_start (EV_P_ struct ev_prepare *w)
1460	{
1461	if (ev_is_active (w))
1462	return;
1463
1464	ev_start (EV_A_ (W)w, ++preparecnt);
1465	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1466	prepares [preparecnt - 1] = w;
1467	}
1468
1469	void
1470	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1471	{
1472	ev_clear_pending (EV_A_ (W)w);
1473	if (!ev_is_active (w))
1474	return;
1475
1476	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1477	ev_stop (EV_A_ (W)w);
1478	}
1479
1480	void
1481	ev_check_start (EV_P_ struct ev_check *w)
1482	{
1483	if (ev_is_active (w))
1484	return;
1485
1486	ev_start (EV_A_ (W)w, ++checkcnt);
1487	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1488	checks [checkcnt - 1] = w;
1489	}
1490
1491	void
1492	ev_check_stop (EV_P_ struct ev_check *w)
1493	{
1494	ev_clear_pending (EV_A_ (W)w);
1495	if (!ev_is_active (w))
1496	return;
1497
1498	checks [((W)w)->active - 1] = checks [--checkcnt];
1499	ev_stop (EV_A_ (W)w);
1500	}
1501
1502	#ifndef SA_RESTART	1742	#ifndef SA_RESTART
1503	# define SA_RESTART 0	1743	# define SA_RESTART 0
1504	#endif	1744	#endif
1505		1745
1506	void	1746	void noinline
1507	ev_signal_start (EV_P_ struct ev_signal *w)	1747	ev_signal_start (EV_P_ ev_signal *w)
1508	{	1748	{
1509	#if EV_MULTIPLICITY	1749	#if EV_MULTIPLICITY
1510	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1750	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1511	#endif	1751	#endif
1512	if (ev_is_active (w))	1752	if (expect_false (ev_is_active (w)))
1513	return;	1753	return;
1514		1754
1515	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1755	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1516		1756
1517	ev_start (EV_A_ (W)w, 1);	1757	ev_start (EV_A_ (W)w, 1);
…		…
1530	sigaction (w->signum, &sa, 0);	1770	sigaction (w->signum, &sa, 0);
1531	#endif	1771	#endif
1532	}	1772	}
1533	}	1773	}
1534		1774
1535	void	1775	void noinline
1536	ev_signal_stop (EV_P_ struct ev_signal *w)	1776	ev_signal_stop (EV_P_ ev_signal *w)
1537	{	1777	{
1538	ev_clear_pending (EV_A_ (W)w);	1778	clear_pending (EV_A_ (W)w);
1539	if (!ev_is_active (w))	1779	if (expect_false (!ev_is_active (w)))
1540	return;	1780	return;
1541		1781
1542	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1782	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1543	ev_stop (EV_A_ (W)w);	1783	ev_stop (EV_A_ (W)w);
1544		1784
1545	if (!signals [w->signum - 1].head)	1785	if (!signals [w->signum - 1].head)
1546	signal (w->signum, SIG_DFL);	1786	signal (w->signum, SIG_DFL);
1547	}	1787	}
1548		1788
1549	void	1789	void
1550	ev_child_start (EV_P_ struct ev_child *w)	1790	ev_child_start (EV_P_ ev_child *w)
1551	{	1791	{
1552	#if EV_MULTIPLICITY	1792	#if EV_MULTIPLICITY
1553	assert (("child watchers are only supported in the default loop", loop == default_loop));	1793	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1554	#endif	1794	#endif
1555	if (ev_is_active (w))	1795	if (expect_false (ev_is_active (w)))
1556	return;	1796	return;
1557		1797
1558	ev_start (EV_A_ (W)w, 1);	1798	ev_start (EV_A_ (W)w, 1);
1559	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1799	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1560	}	1800	}
1561		1801
1562	void	1802	void
1563	ev_child_stop (EV_P_ struct ev_child *w)	1803	ev_child_stop (EV_P_ ev_child *w)
1564	{	1804	{
1565	ev_clear_pending (EV_A_ (W)w);	1805	clear_pending (EV_A_ (W)w);
1566	if (!ev_is_active (w))	1806	if (expect_false (!ev_is_active (w)))
1567	return;	1807	return;
1568		1808
1569	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1809	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1570	ev_stop (EV_A_ (W)w);	1810	ev_stop (EV_A_ (W)w);
1571	}	1811	}
1572		1812
		1813	#if EV_STAT_ENABLE
		1814
		1815	# ifdef _WIN32
		1816	# undef lstat
		1817	# define lstat(a,b) _stati64 (a,b)
		1818	# endif
		1819
		1820	#define DEF_STAT_INTERVAL 5.0074891
		1821	#define MIN_STAT_INTERVAL 0.1074891
		1822
		1823	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1824
		1825	#if EV_USE_INOTIFY
		1826	# define EV_INOTIFY_BUFSIZE 8192
		1827
		1828	static void noinline
		1829	infy_add (EV_P_ ev_stat *w)
		1830	{
		1831	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);
		1832
		1833	if (w->wd < 0)
		1834	{
		1835	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1836
		1837	/* monitor some parent directory for speedup hints */
		1838	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1839	{
		1840	char path [4096];
		1841	strcpy (path, w->path);
		1842
		1843	do
		1844	{
		1845	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1846	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1847
		1848	char *pend = strrchr (path, '/');
		1849
		1850	if (!pend)
		1851	break; /* whoops, no '/', complain to your admin */
		1852
		1853	*pend = 0;
		1854	w->wd = inotify_add_watch (fs_fd, path, mask);
		1855	}
		1856	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1857	}
		1858	}
		1859	else
		1860	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1861
		1862	if (w->wd >= 0)
		1863	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1864	}
		1865
		1866	static void noinline
		1867	infy_del (EV_P_ ev_stat *w)
		1868	{
		1869	int slot;
		1870	int wd = w->wd;
		1871
		1872	if (wd < 0)
		1873	return;
		1874
		1875	w->wd = -2;
		1876	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1877	wlist_del (&fs_hash [slot].head, (WL)w);
		1878
		1879	/* remove this watcher, if others are watching it, they will rearm */
		1880	inotify_rm_watch (fs_fd, wd);
		1881	}
		1882
		1883	static void noinline
		1884	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1885	{
		1886	if (slot < 0)
		1887	/* overflow, need to check for all hahs slots */
		1888	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1889	infy_wd (EV_A_ slot, wd, ev);
		1890	else
		1891	{
		1892	WL w_;
		1893
		1894	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1895	{
		1896	ev_stat *w = (ev_stat *)w_;
		1897	w_ = w_->next; /* lets us remove this watcher and all before it */
		1898
		1899	if (w->wd == wd || wd == -1)
		1900	{
		1901	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1902	{
		1903	w->wd = -1;
		1904	infy_add (EV_A_ w); /* re-add, no matter what */
		1905	}
		1906
		1907	stat_timer_cb (EV_A_ &w->timer, 0);
		1908	}
		1909	}
		1910	}
		1911	}
		1912
		1913	static void
		1914	infy_cb (EV_P_ ev_io *w, int revents)
		1915	{
		1916	char buf [EV_INOTIFY_BUFSIZE];
		1917	struct inotify_event *ev = (struct inotify_event *)buf;
		1918	int ofs;
		1919	int len = read (fs_fd, buf, sizeof (buf));
		1920
		1921	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1922	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1923	}
		1924
		1925	void inline_size
		1926	infy_init (EV_P)
		1927	{
		1928	if (fs_fd != -2)
		1929	return;
		1930
		1931	fs_fd = inotify_init ();
		1932
		1933	if (fs_fd >= 0)
		1934	{
		1935	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1936	ev_set_priority (&fs_w, EV_MAXPRI);
		1937	ev_io_start (EV_A_ &fs_w);
		1938	}
		1939	}
		1940
		1941	void inline_size
		1942	infy_fork (EV_P)
		1943	{
		1944	int slot;
		1945
		1946	if (fs_fd < 0)
		1947	return;
		1948
		1949	close (fs_fd);
		1950	fs_fd = inotify_init ();
		1951
		1952	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1953	{
		1954	WL w_ = fs_hash [slot].head;
		1955	fs_hash [slot].head = 0;
		1956
		1957	while (w_)
		1958	{
		1959	ev_stat *w = (ev_stat *)w_;
		1960	w_ = w_->next; /* lets us add this watcher */
		1961
		1962	w->wd = -1;
		1963
		1964	if (fs_fd >= 0)
		1965	infy_add (EV_A_ w); /* re-add, no matter what */
		1966	else
		1967	ev_timer_start (EV_A_ &w->timer);
		1968	}
		1969
		1970	}
		1971	}
		1972
		1973	#endif
		1974
		1975	void
		1976	ev_stat_stat (EV_P_ ev_stat *w)
		1977	{
		1978	if (lstat (w->path, &w->attr) < 0)
		1979	w->attr.st_nlink = 0;
		1980	else if (!w->attr.st_nlink)
		1981	w->attr.st_nlink = 1;
		1982	}
		1983
		1984	static void noinline
		1985	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1986	{
		1987	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1988
		1989	/* we copy this here each the time so that */
		1990	/* prev has the old value when the callback gets invoked */
		1991	w->prev = w->attr;
		1992	ev_stat_stat (EV_A_ w);
		1993
		1994	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1995	if (
		1996	w->prev.st_dev != w->attr.st_dev
		1997	|| w->prev.st_ino != w->attr.st_ino
		1998	|| w->prev.st_mode != w->attr.st_mode
		1999	|| w->prev.st_nlink != w->attr.st_nlink
		2000	|| w->prev.st_uid != w->attr.st_uid
		2001	|| w->prev.st_gid != w->attr.st_gid
		2002	|| w->prev.st_rdev != w->attr.st_rdev
		2003	|| w->prev.st_size != w->attr.st_size
		2004	|| w->prev.st_atime != w->attr.st_atime
		2005	|| w->prev.st_mtime != w->attr.st_mtime
		2006	|| w->prev.st_ctime != w->attr.st_ctime
		2007	) {
		2008	#if EV_USE_INOTIFY
		2009	infy_del (EV_A_ w);
		2010	infy_add (EV_A_ w);
		2011	ev_stat_stat (EV_A_ w); /* avoid race... */
		2012	#endif
		2013
		2014	ev_feed_event (EV_A_ w, EV_STAT);
		2015	}
		2016	}
		2017
		2018	void
		2019	ev_stat_start (EV_P_ ev_stat *w)
		2020	{
		2021	if (expect_false (ev_is_active (w)))
		2022	return;
		2023
		2024	/* since we use memcmp, we need to clear any padding data etc. */
		2025	memset (&w->prev, 0, sizeof (ev_statdata));
		2026	memset (&w->attr, 0, sizeof (ev_statdata));
		2027
		2028	ev_stat_stat (EV_A_ w);
		2029
		2030	if (w->interval < MIN_STAT_INTERVAL)
		2031	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2032
		2033	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2034	ev_set_priority (&w->timer, ev_priority (w));
		2035
		2036	#if EV_USE_INOTIFY
		2037	infy_init (EV_A);
		2038
		2039	if (fs_fd >= 0)
		2040	infy_add (EV_A_ w);
		2041	else
		2042	#endif
		2043	ev_timer_start (EV_A_ &w->timer);
		2044
		2045	ev_start (EV_A_ (W)w, 1);
		2046	}
		2047
		2048	void
		2049	ev_stat_stop (EV_P_ ev_stat *w)
		2050	{
		2051	clear_pending (EV_A_ (W)w);
		2052	if (expect_false (!ev_is_active (w)))
		2053	return;
		2054
		2055	#if EV_USE_INOTIFY
		2056	infy_del (EV_A_ w);
		2057	#endif
		2058	ev_timer_stop (EV_A_ &w->timer);
		2059
		2060	ev_stop (EV_A_ (W)w);
		2061	}
		2062	#endif
		2063
		2064	#if EV_IDLE_ENABLE
		2065	void
		2066	ev_idle_start (EV_P_ ev_idle *w)
		2067	{
		2068	if (expect_false (ev_is_active (w)))
		2069	return;
		2070
		2071	pri_adjust (EV_A_ (W)w);
		2072
		2073	{
		2074	int active = ++idlecnt [ABSPRI (w)];
		2075
		2076	++idleall;
		2077	ev_start (EV_A_ (W)w, active);
		2078
		2079	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2080	idles [ABSPRI (w)][active - 1] = w;
		2081	}
		2082	}
		2083
		2084	void
		2085	ev_idle_stop (EV_P_ ev_idle *w)
		2086	{
		2087	clear_pending (EV_A_ (W)w);
		2088	if (expect_false (!ev_is_active (w)))
		2089	return;
		2090
		2091	{
		2092	int active = ((W)w)->active;
		2093
		2094	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2095	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2096
		2097	ev_stop (EV_A_ (W)w);
		2098	--idleall;
		2099	}
		2100	}
		2101	#endif
		2102
		2103	void
		2104	ev_prepare_start (EV_P_ ev_prepare *w)
		2105	{
		2106	if (expect_false (ev_is_active (w)))
		2107	return;
		2108
		2109	ev_start (EV_A_ (W)w, ++preparecnt);
		2110	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2111	prepares [preparecnt - 1] = w;
		2112	}
		2113
		2114	void
		2115	ev_prepare_stop (EV_P_ ev_prepare *w)
		2116	{
		2117	clear_pending (EV_A_ (W)w);
		2118	if (expect_false (!ev_is_active (w)))
		2119	return;
		2120
		2121	{
		2122	int active = ((W)w)->active;
		2123	prepares [active - 1] = prepares [--preparecnt];
		2124	((W)prepares [active - 1])->active = active;
		2125	}
		2126
		2127	ev_stop (EV_A_ (W)w);
		2128	}
		2129
		2130	void
		2131	ev_check_start (EV_P_ ev_check *w)
		2132	{
		2133	if (expect_false (ev_is_active (w)))
		2134	return;
		2135
		2136	ev_start (EV_A_ (W)w, ++checkcnt);
		2137	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2138	checks [checkcnt - 1] = w;
		2139	}
		2140
		2141	void
		2142	ev_check_stop (EV_P_ ev_check *w)
		2143	{
		2144	clear_pending (EV_A_ (W)w);
		2145	if (expect_false (!ev_is_active (w)))
		2146	return;
		2147
		2148	{
		2149	int active = ((W)w)->active;
		2150	checks [active - 1] = checks [--checkcnt];
		2151	((W)checks [active - 1])->active = active;
		2152	}
		2153
		2154	ev_stop (EV_A_ (W)w);
		2155	}
		2156
		2157	#if EV_EMBED_ENABLE
		2158	void noinline
		2159	ev_embed_sweep (EV_P_ ev_embed *w)
		2160	{
		2161	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2162	}
		2163
		2164	static void
		2165	embed_cb (EV_P_ ev_io *io, int revents)
		2166	{
		2167	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2168
		2169	if (ev_cb (w))
		2170	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2171	else
		2172	ev_embed_sweep (loop, w);
		2173	}
		2174
		2175	void
		2176	ev_embed_start (EV_P_ ev_embed *w)
		2177	{
		2178	if (expect_false (ev_is_active (w)))
		2179	return;
		2180
		2181	{
		2182	struct ev_loop *loop = w->loop;
		2183	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2184	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2185	}
		2186
		2187	ev_set_priority (&w->io, ev_priority (w));
		2188	ev_io_start (EV_A_ &w->io);
		2189
		2190	ev_start (EV_A_ (W)w, 1);
		2191	}
		2192
		2193	void
		2194	ev_embed_stop (EV_P_ ev_embed *w)
		2195	{
		2196	clear_pending (EV_A_ (W)w);
		2197	if (expect_false (!ev_is_active (w)))
		2198	return;
		2199
		2200	ev_io_stop (EV_A_ &w->io);
		2201
		2202	ev_stop (EV_A_ (W)w);
		2203	}
		2204	#endif
		2205
		2206	#if EV_FORK_ENABLE
		2207	void
		2208	ev_fork_start (EV_P_ ev_fork *w)
		2209	{
		2210	if (expect_false (ev_is_active (w)))
		2211	return;
		2212
		2213	ev_start (EV_A_ (W)w, ++forkcnt);
		2214	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2215	forks [forkcnt - 1] = w;
		2216	}
		2217
		2218	void
		2219	ev_fork_stop (EV_P_ ev_fork *w)
		2220	{
		2221	clear_pending (EV_A_ (W)w);
		2222	if (expect_false (!ev_is_active (w)))
		2223	return;
		2224
		2225	{
		2226	int active = ((W)w)->active;
		2227	forks [active - 1] = forks [--forkcnt];
		2228	((W)forks [active - 1])->active = active;
		2229	}
		2230
		2231	ev_stop (EV_A_ (W)w);
		2232	}
		2233	#endif
		2234
1573	/*****************************************************************************/	2235	/*****************************************************************************/
1574		2236
1575	struct ev_once	2237	struct ev_once
1576	{	2238	{
1577	struct ev_io io;	2239	ev_io io;
1578	struct ev_timer to;	2240	ev_timer to;
1579	void (*cb)(int revents, void *arg);	2241	void (*cb)(int revents, void *arg);
1580	void *arg;	2242	void *arg;
1581	};	2243	};
1582		2244
1583	static void	2245	static void
…		…
1592		2254
1593	cb (revents, arg);	2255	cb (revents, arg);
1594	}	2256	}
1595		2257
1596	static void	2258	static void
1597	once_cb_io (EV_P_ struct ev_io *w, int revents)	2259	once_cb_io (EV_P_ ev_io *w, int revents)
1598	{	2260	{
1599	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2261	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1600	}	2262	}
1601		2263
1602	static void	2264	static void
1603	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2265	once_cb_to (EV_P_ ev_timer *w, int revents)
1604	{	2266	{
1605	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2267	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1606	}	2268	}
1607		2269
1608	void	2270	void
1609	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2271	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1610	{	2272	{
1611	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	2273	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1612		2274
1613	if (!once)	2275	if (expect_false (!once))
		2276	{
1614	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2277	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1615	else	2278	return;
1616	{	2279	}
		2280
1617	once->cb = cb;	2281	once->cb = cb;
1618	once->arg = arg;	2282	once->arg = arg;
1619		2283
1620	ev_init (&once->io, once_cb_io);	2284	ev_init (&once->io, once_cb_io);
1621	if (fd >= 0)	2285	if (fd >= 0)
1622	{	2286	{
1623	ev_io_set (&once->io, fd, events);	2287	ev_io_set (&once->io, fd, events);
1624	ev_io_start (EV_A_ &once->io);	2288	ev_io_start (EV_A_ &once->io);
1625	}	2289	}
1626		2290
1627	ev_init (&once->to, once_cb_to);	2291	ev_init (&once->to, once_cb_to);
1628	if (timeout >= 0.)	2292	if (timeout >= 0.)
1629	{	2293	{
1630	ev_timer_set (&once->to, timeout, 0.);	2294	ev_timer_set (&once->to, timeout, 0.);
1631	ev_timer_start (EV_A_ &once->to);	2295	ev_timer_start (EV_A_ &once->to);
1632	}
1633	}	2296	}
1634	}	2297	}
1635		2298
1636	#ifdef __cplusplus	2299	#ifdef __cplusplus
1637	}	2300	}

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