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Comparing libev/ev.c (file contents):
Revision 1.115 by root, Wed Nov 14 04:53:21 2007 UTC vs.
Revision 1.181 by root, Wed Dec 12 00:17:08 2007 UTC

…		…
32	#ifdef __cplusplus	32	#ifdef __cplusplus
33	extern "C" {	33	extern "C" {
34	#endif	34	#endif
35		35
36	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
37	# include "config.h"	40	# include "config.h"
		41	# endif
38		42
39	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
40	# ifndef EV_USE_MONOTONIC	44	# ifndef EV_USE_MONOTONIC
41	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
42	# endif	46	# endif
43	# ifndef EV_USE_REALTIME	47	# ifndef EV_USE_REALTIME
44	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
45	# endif	49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
46	# endif	57	# endif
47		58
48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)	59	# ifndef EV_USE_SELECT
		60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
49	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
50	# endif	65	# endif
51		66
52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)	67	# ifndef EV_USE_POLL
		68	# if HAVE_POLL && HAVE_POLL_H
53	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
54	# endif	73	# endif
55		74
56	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)	75	# ifndef EV_USE_EPOLL
		76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
57	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
58	# endif	81	# endif
59		82
		83	# ifndef EV_USE_KQUEUE
60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
61	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
		97	# endif
		98
		99	# ifndef EV_USE_INOTIFY
		100	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		101	# define EV_USE_INOTIFY 1
		102	# else
		103	# define EV_USE_INOTIFY 0
		104	# endif
62	# endif	105	# endif
63		106
64	#endif	107	#endif
65		108
66	#include <math.h>	109	#include <math.h>
…		…
75	#include <sys/types.h>	118	#include <sys/types.h>
76	#include <time.h>	119	#include <time.h>
77		120
78	#include <signal.h>	121	#include <signal.h>
79		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
80	#ifndef _WIN32	129	#ifndef _WIN32
81	# include <unistd.h>
82	# include <sys/time.h>	130	# include <sys/time.h>
83	# include <sys/wait.h>	131	# include <sys/wait.h>
		132	# include <unistd.h>
84	#else	133	#else
85	# define WIN32_LEAN_AND_MEAN	134	# define WIN32_LEAN_AND_MEAN
86	# include <windows.h>	135	# include <windows.h>
87	# ifndef EV_SELECT_IS_WINSOCKET	136	# ifndef EV_SELECT_IS_WINSOCKET
88	# define EV_SELECT_IS_WINSOCKET 1	137	# define EV_SELECT_IS_WINSOCKET 1
…		…
90	#endif	139	#endif
91		140
92	/**/	141	/**/
93		142
94	#ifndef EV_USE_MONOTONIC	143	#ifndef EV_USE_MONOTONIC
95	# define EV_USE_MONOTONIC 1	144	# define EV_USE_MONOTONIC 0
		145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
96	#endif	149	#endif
97		150
98	#ifndef EV_USE_SELECT	151	#ifndef EV_USE_SELECT
99	# define EV_USE_SELECT 1	152	# define EV_USE_SELECT 1
100	# define EV_SELECT_USE_FD_SET 1
101	#endif	153	#endif
102		154
103	#ifndef EV_USE_POLL	155	#ifndef EV_USE_POLL
104	# ifdef _WIN32	156	# ifdef _WIN32
105	# define EV_USE_POLL 0	157	# define EV_USE_POLL 0
…		…
114		166
115	#ifndef EV_USE_KQUEUE	167	#ifndef EV_USE_KQUEUE
116	# define EV_USE_KQUEUE 0	168	# define EV_USE_KQUEUE 0
117	#endif	169	#endif
118		170
119	#ifndef EV_USE_REALTIME	171	#ifndef EV_USE_PORT
120	# define EV_USE_REALTIME 1	172	# define EV_USE_PORT 0
		173	#endif
		174
		175	#ifndef EV_USE_INOTIFY
		176	# define EV_USE_INOTIFY 0
		177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
		182	# else
		183	# define EV_PID_HASHSIZE 16
		184	# endif
		185	#endif
		186
		187	#ifndef EV_INOTIFY_HASHSIZE
		188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
121	#endif	193	#endif
122		194
123	/**/	195	/**/
124
125	/* darwin simply cannot be helped */
126	#ifdef __APPLE__
127	# undef EV_USE_POLL
128	# undef EV_USE_KQUEUE
129	#endif
130		196
131	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
132	# undef EV_USE_MONOTONIC	198	# undef EV_USE_MONOTONIC
133	# define EV_USE_MONOTONIC 0	199	# define EV_USE_MONOTONIC 0
134	#endif	200	#endif
…		…
140		206
141	#if EV_SELECT_IS_WINSOCKET	207	#if EV_SELECT_IS_WINSOCKET
142	# include <winsock.h>	208	# include <winsock.h>
143	#endif	209	#endif
144		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
145	/**/	219	/**/
146		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
147	#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) */
148	#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) */
149	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
150	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	233	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
151
152	#ifdef EV_H
153	# include EV_H
154	#else
155	# include "ev.h"
156	#endif
157		234
158	#if __GNUC__ >= 3	235	#if __GNUC__ >= 3
159	# define expect(expr,value) __builtin_expect ((expr),(value))	236	# define expect(expr,value) __builtin_expect ((expr),(value))
160	# define inline inline	237	# define noinline __attribute__ ((noinline))
161	#else	238	#else
162	# define expect(expr,value) (expr)	239	# define expect(expr,value) (expr)
163	# define inline static	240	# define noinline
		241	# if __STDC_VERSION__ < 199901L
		242	# define inline
		243	# endif
164	#endif	244	#endif
165		245
166	#define expect_false(expr) expect ((expr) != 0, 0)	246	#define expect_false(expr) expect ((expr) != 0, 0)
167	#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
168		255
169	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	256	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
170	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	257	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
171		258
172	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	259	#define EMPTY /* required for microsofts broken pseudo-c compiler */
173	#define EMPTY2(a,b) /* used to suppress some warnings */	260	#define EMPTY2(a,b) /* used to suppress some warnings */
174		261
175	typedef struct ev_watcher *W;	262	typedef ev_watcher *W;
176	typedef struct ev_watcher_list *WL;	263	typedef ev_watcher_list *WL;
177	typedef struct ev_watcher_time *WT;	264	typedef ev_watcher_time *WT;
178		265
179	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	266	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
180		267
181	#ifdef _WIN32	268	#ifdef _WIN32
182	# include "ev_win32.c"	269	# include "ev_win32.c"
…		…
184		271
185	/*****************************************************************************/	272	/*****************************************************************************/
186		273
187	static void (*syserr_cb)(const char *msg);	274	static void (*syserr_cb)(const char *msg);
188		275
		276	void
189	void ev_set_syserr_cb (void (*cb)(const char *msg))	277	ev_set_syserr_cb (void (*cb)(const char *msg))
190	{	278	{
191	syserr_cb = cb;	279	syserr_cb = cb;
192	}	280	}
193		281
194	static void	282	static void noinline
195	syserr (const char *msg)	283	syserr (const char *msg)
196	{	284	{
197	if (!msg)	285	if (!msg)
198	msg = "(libev) system error";	286	msg = "(libev) system error";
199		287
…		…
206	}	294	}
207	}	295	}
208		296
209	static void *(*alloc)(void *ptr, long size);	297	static void *(*alloc)(void *ptr, long size);
210		298
		299	void
211	void ev_set_allocator (void *(*cb)(void *ptr, long size))	300	ev_set_allocator (void *(*cb)(void *ptr, long size))
212	{	301	{
213	alloc = cb;	302	alloc = cb;
214	}	303	}
215		304
216	static void *	305	inline_speed void *
217	ev_realloc (void *ptr, long size)	306	ev_realloc (void *ptr, long size)
218	{	307	{
219	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
220		309
221	if (!ptr && size)	310	if (!ptr && size)
…		…
245	typedef struct	334	typedef struct
246	{	335	{
247	W w;	336	W w;
248	int events;	337	int events;
249	} ANPENDING;	338	} ANPENDING;
		339
		340	#if EV_USE_INOTIFY
		341	typedef struct
		342	{
		343	WL head;
		344	} ANFS;
		345	#endif
250		346
251	#if EV_MULTIPLICITY	347	#if EV_MULTIPLICITY
252		348
253	struct ev_loop	349	struct ev_loop
254	{	350	{
…		…
258	#include "ev_vars.h"	354	#include "ev_vars.h"
259	#undef VAR	355	#undef VAR
260	};	356	};
261	#include "ev_wrap.h"	357	#include "ev_wrap.h"
262		358
263	struct ev_loop default_loop_struct;	359	static struct ev_loop default_loop_struct;
264	static struct ev_loop *default_loop;	360	struct ev_loop *ev_default_loop_ptr;
265		361
266	#else	362	#else
267		363
268	ev_tstamp ev_rt_now;	364	ev_tstamp ev_rt_now;
269	#define VAR(name,decl) static decl;	365	#define VAR(name,decl) static decl;
270	#include "ev_vars.h"	366	#include "ev_vars.h"
271	#undef VAR	367	#undef VAR
272		368
273	static int default_loop;	369	static int ev_default_loop_ptr;
274		370
275	#endif	371	#endif
276		372
277	/*****************************************************************************/	373	/*****************************************************************************/
278		374
…		…
288	gettimeofday (&tv, 0);	384	gettimeofday (&tv, 0);
289	return tv.tv_sec + tv.tv_usec * 1e-6;	385	return tv.tv_sec + tv.tv_usec * 1e-6;
290	#endif	386	#endif
291	}	387	}
292		388
293	inline ev_tstamp	389	ev_tstamp inline_size
294	get_clock (void)	390	get_clock (void)
295	{	391	{
296	#if EV_USE_MONOTONIC	392	#if EV_USE_MONOTONIC
297	if (expect_true (have_monotonic))	393	if (expect_true (have_monotonic))
298	{	394	{
…		…
311	{	407	{
312	return ev_rt_now;	408	return ev_rt_now;
313	}	409	}
314	#endif	410	#endif
315		411
316	#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	}
317		439
318	#define array_needsize(type,base,cur,cnt,init) \	440	#define array_needsize(type,base,cur,cnt,init) \
319	if (expect_false ((cnt) > cur)) \	441	if (expect_false ((cnt) > (cur))) \
320	{ \	442	{ \
321	int newcnt = cur; \	443	int ocur_ = (cur); \
322	do \	444	(base) = (type *)array_realloc \
323	{ \	445	(sizeof (type), (base), &(cur), (cnt)); \
324	newcnt = array_roundsize (type, newcnt << 1); \	446	init ((base) + (ocur_), (cur) - ocur_); \
325	} \
326	while ((cnt) > newcnt); \
327	\
328	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
329	init (base + cur, newcnt - cur); \
330	cur = newcnt; \
331	}	447	}
332		448
		449	#if 0
333	#define array_slim(type,stem) \	450	#define array_slim(type,stem) \
334	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	451	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
335	{ \	452	{ \
336	stem ## max = array_roundsize (stem ## cnt >> 1); \	453	stem ## max = array_roundsize (stem ## cnt >> 1); \
337	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	454	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
338	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	455	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
339	}	456	}
		457	#endif
340		458
341	#define array_free(stem, idx) \	459	#define array_free(stem, idx) \
342	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;
343		461
344	/*****************************************************************************/	462	/*****************************************************************************/
345		463
346	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
347	anfds_init (ANFD *base, int count)	493	anfds_init (ANFD *base, int count)
348	{	494	{
349	while (count--)	495	while (count--)
350	{	496	{
351	base->head = 0;	497	base->head = 0;
…		…
354		500
355	++base;	501	++base;
356	}	502	}
357	}	503	}
358		504
359	void	505	void inline_speed
360	ev_feed_event (EV_P_ void *w, int revents)
361	{
362	W w_ = (W)w;
363
364	if (w_->pending)
365	{
366	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
367	return;
368	}
369
370	w_->pending = ++pendingcnt [ABSPRI (w_)];
371	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
372	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
373	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
374	}
375
376	static void
377	queue_events (EV_P_ W *events, int eventcnt, int type)
378	{
379	int i;
380
381	for (i = 0; i < eventcnt; ++i)
382	ev_feed_event (EV_A_ events [i], type);
383	}
384
385	inline void
386	fd_event (EV_P_ int fd, int revents)	506	fd_event (EV_P_ int fd, int revents)
387	{	507	{
388	ANFD *anfd = anfds + fd;	508	ANFD *anfd = anfds + fd;
389	struct ev_io *w;	509	ev_io *w;
390		510
391	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)
392	{	512	{
393	int ev = w->events & revents;	513	int ev = w->events & revents;
394		514
395	if (ev)	515	if (ev)
396	ev_feed_event (EV_A_ (W)w, ev);	516	ev_feed_event (EV_A_ (W)w, ev);
…		…
398	}	518	}
399		519
400	void	520	void
401	ev_feed_fd_event (EV_P_ int fd, int revents)	521	ev_feed_fd_event (EV_P_ int fd, int revents)
402	{	522	{
		523	if (fd >= 0 && fd < anfdmax)
403	fd_event (EV_A_ fd, revents);	524	fd_event (EV_A_ fd, revents);
404	}	525	}
405		526
406	/*****************************************************************************/	527	void inline_size
407
408	static void
409	fd_reify (EV_P)	528	fd_reify (EV_P)
410	{	529	{
411	int i;	530	int i;
412		531
413	for (i = 0; i < fdchangecnt; ++i)	532	for (i = 0; i < fdchangecnt; ++i)
414	{	533	{
415	int fd = fdchanges [i];	534	int fd = fdchanges [i];
416	ANFD *anfd = anfds + fd;	535	ANFD *anfd = anfds + fd;
417	struct ev_io *w;	536	ev_io *w;
418		537
419	int events = 0;	538	int events = 0;
420		539
421	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)
422	events |= w->events;	541	events |= w->events;
423		542
424	#if EV_SELECT_IS_WINSOCKET	543	#if EV_SELECT_IS_WINSOCKET
425	if (events)	544	if (events)
426	{	545	{
…		…
430	}	549	}
431	#endif	550	#endif
432		551
433	anfd->reify = 0;	552	anfd->reify = 0;
434		553
435	method_modify (EV_A_ fd, anfd->events, events);	554	backend_modify (EV_A_ fd, anfd->events, events);
436	anfd->events = events;	555	anfd->events = events;
437	}	556	}
438		557
439	fdchangecnt = 0;	558	fdchangecnt = 0;
440	}	559	}
441		560
442	static void	561	void inline_size
443	fd_change (EV_P_ int fd)	562	fd_change (EV_P_ int fd)
444	{	563	{
445	if (anfds [fd].reify)	564	if (expect_false (anfds [fd].reify))
446	return;	565	return;
447		566
448	anfds [fd].reify = 1;	567	anfds [fd].reify = 1;
449		568
450	++fdchangecnt;	569	++fdchangecnt;
451	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
452	fdchanges [fdchangecnt - 1] = fd;	571	fdchanges [fdchangecnt - 1] = fd;
453	}	572	}
454		573
455	static void	574	void inline_speed
456	fd_kill (EV_P_ int fd)	575	fd_kill (EV_P_ int fd)
457	{	576	{
458	struct ev_io *w;	577	ev_io *w;
459		578
460	while ((w = (struct ev_io *)anfds [fd].head))	579	while ((w = (ev_io *)anfds [fd].head))
461	{	580	{
462	ev_io_stop (EV_A_ w);	581	ev_io_stop (EV_A_ w);
463	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);
464	}	583	}
465	}	584	}
466		585
467	static int	586	int inline_size
468	fd_valid (int fd)	587	fd_valid (int fd)
469	{	588	{
470	#ifdef _WIN32	589	#ifdef _WIN32
471	return _get_osfhandle (fd) != -1;	590	return _get_osfhandle (fd) != -1;
472	#else	591	#else
473	return fcntl (fd, F_GETFD) != -1;	592	return fcntl (fd, F_GETFD) != -1;
474	#endif	593	#endif
475	}	594	}
476		595
477	/* called on EBADF to verify fds */	596	/* called on EBADF to verify fds */
478	static void	597	static void noinline
479	fd_ebadf (EV_P)	598	fd_ebadf (EV_P)
480	{	599	{
481	int fd;	600	int fd;
482		601
483	for (fd = 0; fd < anfdmax; ++fd)	602	for (fd = 0; fd < anfdmax; ++fd)
…		…
485	if (!fd_valid (fd) == -1 && errno == EBADF)	604	if (!fd_valid (fd) == -1 && errno == EBADF)
486	fd_kill (EV_A_ fd);	605	fd_kill (EV_A_ fd);
487	}	606	}
488		607
489	/* 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 */
490	static void	609	static void noinline
491	fd_enomem (EV_P)	610	fd_enomem (EV_P)
492	{	611	{
493	int fd;	612	int fd;
494		613
495	for (fd = anfdmax; fd--; )	614	for (fd = anfdmax; fd--; )
…		…
498	fd_kill (EV_A_ fd);	617	fd_kill (EV_A_ fd);
499	return;	618	return;
500	}	619	}
501	}	620	}
502		621
503	/* 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 */
504	static void	623	static void noinline
505	fd_rearm_all (EV_P)	624	fd_rearm_all (EV_P)
506	{	625	{
507	int fd;	626	int fd;
508		627
509	/* this should be highly optimised to not do anything but set a flag */
510	for (fd = 0; fd < anfdmax; ++fd)	628	for (fd = 0; fd < anfdmax; ++fd)
511	if (anfds [fd].events)	629	if (anfds [fd].events)
512	{	630	{
513	anfds [fd].events = 0;	631	anfds [fd].events = 0;
514	fd_change (EV_A_ fd);	632	fd_change (EV_A_ fd);
515	}	633	}
516	}	634	}
517		635
518	/*****************************************************************************/	636	/*****************************************************************************/
519		637
520	static void	638	void inline_speed
521	upheap (WT *heap, int k)	639	upheap (WT *heap, int k)
522	{	640	{
523	WT w = heap [k];	641	WT w = heap [k];
524		642
525	while (k && heap [k >> 1]->at > w->at)	643	while (k)
526	{	644	{
		645	int p = (k - 1) >> 1;
		646
		647	if (heap [p]->at <= w->at)
		648	break;
		649
527	heap [k] = heap [k >> 1];	650	heap [k] = heap [p];
528	((W)heap [k])->active = k + 1;	651	((W)heap [k])->active = k + 1;
529	k >>= 1;	652	k = p;
530	}	653	}
531		654
532	heap [k] = w;	655	heap [k] = w;
533	((W)heap [k])->active = k + 1;	656	((W)heap [k])->active = k + 1;
534
535	}	657	}
536		658
537	static void	659	void inline_speed
538	downheap (WT *heap, int N, int k)	660	downheap (WT *heap, int N, int k)
539	{	661	{
540	WT w = heap [k];	662	WT w = heap [k];
541		663
542	while (k < (N >> 1))	664	for (;;)
543	{	665	{
544	int j = k << 1;	666	int c = (k << 1) + 1;
545		667
546	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	668	if (c >= N)
547	++j;
548
549	if (w->at <= heap [j]->at)
550	break;	669	break;
551		670
		671	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		672	? 1 : 0;
		673
		674	if (w->at <= heap [c]->at)
		675	break;
		676
552	heap [k] = heap [j];	677	heap [k] = heap [c];
553	((W)heap [k])->active = k + 1;	678	((W)heap [k])->active = k + 1;
		679
554	k = j;	680	k = c;
555	}	681	}
556		682
557	heap [k] = w;	683	heap [k] = w;
558	((W)heap [k])->active = k + 1;	684	((W)heap [k])->active = k + 1;
559	}	685	}
560		686
561	inline void	687	void inline_size
562	adjustheap (WT *heap, int N, int k)	688	adjustheap (WT *heap, int N, int k)
563	{	689	{
564	upheap (heap, k);	690	upheap (heap, k);
565	downheap (heap, N, k);	691	downheap (heap, N, k);
566	}	692	}
…		…
576	static ANSIG *signals;	702	static ANSIG *signals;
577	static int signalmax;	703	static int signalmax;
578		704
579	static int sigpipe [2];	705	static int sigpipe [2];
580	static sig_atomic_t volatile gotsig;	706	static sig_atomic_t volatile gotsig;
581	static struct ev_io sigev;	707	static ev_io sigev;
582		708
583	static void	709	void inline_size
584	signals_init (ANSIG *base, int count)	710	signals_init (ANSIG *base, int count)
585	{	711	{
586	while (count--)	712	while (count--)
587	{	713	{
588	base->head = 0;	714	base->head = 0;
…		…
608	write (sigpipe [1], &signum, 1);	734	write (sigpipe [1], &signum, 1);
609	errno = old_errno;	735	errno = old_errno;
610	}	736	}
611	}	737	}
612		738
613	void	739	void noinline
614	ev_feed_signal_event (EV_P_ int signum)	740	ev_feed_signal_event (EV_P_ int signum)
615	{	741	{
616	WL w;	742	WL w;
617		743
618	#if EV_MULTIPLICITY	744	#if EV_MULTIPLICITY
619	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	745	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
620	#endif	746	#endif
621		747
622	--signum;	748	--signum;
623		749
624	if (signum < 0 || signum >= signalmax)	750	if (signum < 0 || signum >= signalmax)
…		…
629	for (w = signals [signum].head; w; w = w->next)	755	for (w = signals [signum].head; w; w = w->next)
630	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	756	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
631	}	757	}
632		758
633	static void	759	static void
634	sigcb (EV_P_ struct ev_io *iow, int revents)	760	sigcb (EV_P_ ev_io *iow, int revents)
635	{	761	{
636	int signum;	762	int signum;
637		763
638	read (sigpipe [0], &revents, 1);	764	read (sigpipe [0], &revents, 1);
639	gotsig = 0;	765	gotsig = 0;
…		…
641	for (signum = signalmax; signum--; )	767	for (signum = signalmax; signum--; )
642	if (signals [signum].gotsig)	768	if (signals [signum].gotsig)
643	ev_feed_signal_event (EV_A_ signum + 1);	769	ev_feed_signal_event (EV_A_ signum + 1);
644	}	770	}
645		771
646	inline void	772	void inline_speed
647	fd_intern (int fd)	773	fd_intern (int fd)
648	{	774	{
649	#ifdef _WIN32	775	#ifdef _WIN32
650	int arg = 1;	776	int arg = 1;
651	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	777	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
653	fcntl (fd, F_SETFD, FD_CLOEXEC);	779	fcntl (fd, F_SETFD, FD_CLOEXEC);
654	fcntl (fd, F_SETFL, O_NONBLOCK);	780	fcntl (fd, F_SETFL, O_NONBLOCK);
655	#endif	781	#endif
656	}	782	}
657		783
658	static void	784	static void noinline
659	siginit (EV_P)	785	siginit (EV_P)
660	{	786	{
661	fd_intern (sigpipe [0]);	787	fd_intern (sigpipe [0]);
662	fd_intern (sigpipe [1]);	788	fd_intern (sigpipe [1]);
663		789
…		…
666	ev_unref (EV_A); /* child watcher should not keep loop alive */	792	ev_unref (EV_A); /* child watcher should not keep loop alive */
667	}	793	}
668		794
669	/*****************************************************************************/	795	/*****************************************************************************/
670		796
671	static struct ev_child *childs [PID_HASHSIZE];	797	static ev_child *childs [EV_PID_HASHSIZE];
672		798
673	#ifndef _WIN32	799	#ifndef _WIN32
674		800
675	static struct ev_signal childev;	801	static ev_signal childev;
		802
		803	void inline_speed
		804	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		805	{
		806	ev_child *w;
		807
		808	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		809	if (w->pid == pid || !w->pid)
		810	{
		811	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		812	w->rpid = pid;
		813	w->rstatus = status;
		814	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		815	}
		816	}
676		817
677	#ifndef WCONTINUED	818	#ifndef WCONTINUED
678	# define WCONTINUED 0	819	# define WCONTINUED 0
679	#endif	820	#endif
680		821
681	static void	822	static void
682	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
683	{
684	struct ev_child *w;
685
686	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
687	if (w->pid == pid || !w->pid)
688	{
689	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
690	w->rpid = pid;
691	w->rstatus = status;
692	ev_feed_event (EV_A_ (W)w, EV_CHILD);
693	}
694	}
695
696	static void
697	childcb (EV_P_ struct ev_signal *sw, int revents)	823	childcb (EV_P_ ev_signal *sw, int revents)
698	{	824	{
699	int pid, status;	825	int pid, status;
700		826
		827	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
701	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	828	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
702	{	829	if (!WCONTINUED
		830	|| errno != EINVAL
		831	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		832	return;
		833
703	/* make sure we are called again until all childs have been reaped */	834	/* make sure we are called again until all childs have been reaped */
		835	/* we need to do it this way so that the callback gets called before we continue */
704	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	836	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
705		837
706	child_reap (EV_A_ sw, pid, pid, status);	838	child_reap (EV_A_ sw, pid, pid, status);
		839	if (EV_PID_HASHSIZE > 1)
707	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	840	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
708	}
709	}	841	}
710		842
711	#endif	843	#endif
712		844
713	/*****************************************************************************/	845	/*****************************************************************************/
714		846
		847	#if EV_USE_PORT
		848	# include "ev_port.c"
		849	#endif
715	#if EV_USE_KQUEUE	850	#if EV_USE_KQUEUE
716	# include "ev_kqueue.c"	851	# include "ev_kqueue.c"
717	#endif	852	#endif
718	#if EV_USE_EPOLL	853	#if EV_USE_EPOLL
719	# include "ev_epoll.c"	854	# include "ev_epoll.c"
…		…
736	{	871	{
737	return EV_VERSION_MINOR;	872	return EV_VERSION_MINOR;
738	}	873	}
739		874
740	/* return true if we are running with elevated privileges and should ignore env variables */	875	/* return true if we are running with elevated privileges and should ignore env variables */
741	static int	876	int inline_size
742	enable_secure (void)	877	enable_secure (void)
743	{	878	{
744	#ifdef _WIN32	879	#ifdef _WIN32
745	return 0;	880	return 0;
746	#else	881	#else
…		…
748	|| getgid () != getegid ();	883	|| getgid () != getegid ();
749	#endif	884	#endif
750	}	885	}
751		886
752	unsigned int	887	unsigned int
753	ev_method (EV_P)	888	ev_supported_backends (void)
754	{	889	{
755	return method;	890	unsigned int flags = 0;
756	}
757		891
758	static void	892	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		893	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		894	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		895	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		896	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		897
		898	return flags;
		899	}
		900
		901	unsigned int
		902	ev_recommended_backends (void)
		903	{
		904	unsigned int flags = ev_supported_backends ();
		905
		906	#ifndef __NetBSD__
		907	/* kqueue is borked on everything but netbsd apparently */
		908	/* it usually doesn't work correctly on anything but sockets and pipes */
		909	flags &= ~EVBACKEND_KQUEUE;
		910	#endif
		911	#ifdef __APPLE__
		912	// flags &= ~EVBACKEND_KQUEUE; for documentation
		913	flags &= ~EVBACKEND_POLL;
		914	#endif
		915
		916	return flags;
		917	}
		918
		919	unsigned int
		920	ev_embeddable_backends (void)
		921	{
		922	return EVBACKEND_EPOLL
		923	| EVBACKEND_KQUEUE
		924	| EVBACKEND_PORT;
		925	}
		926
		927	unsigned int
		928	ev_backend (EV_P)
		929	{
		930	return backend;
		931	}
		932
		933	unsigned int
		934	ev_loop_count (EV_P)
		935	{
		936	return loop_count;
		937	}
		938
		939	static void noinline
759	loop_init (EV_P_ unsigned int flags)	940	loop_init (EV_P_ unsigned int flags)
760	{	941	{
761	if (!method)	942	if (!backend)
762	{	943	{
763	#if EV_USE_MONOTONIC	944	#if EV_USE_MONOTONIC
764	{	945	{
765	struct timespec ts;	946	struct timespec ts;
766	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	947	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
771	ev_rt_now = ev_time ();	952	ev_rt_now = ev_time ();
772	mn_now = get_clock ();	953	mn_now = get_clock ();
773	now_floor = mn_now;	954	now_floor = mn_now;
774	rtmn_diff = ev_rt_now - mn_now;	955	rtmn_diff = ev_rt_now - mn_now;
775		956
776	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))	957	/* pid check not overridable via env */
		958	#ifndef _WIN32
		959	if (flags & EVFLAG_FORKCHECK)
		960	curpid = getpid ();
		961	#endif
		962
		963	if (!(flags & EVFLAG_NOENV)
		964	&& !enable_secure ()
		965	&& getenv ("LIBEV_FLAGS"))
777	flags = atoi (getenv ("LIBEV_FLAGS"));	966	flags = atoi (getenv ("LIBEV_FLAGS"));
778		967
779	if (!(flags & 0x0000ffff))	968	if (!(flags & 0x0000ffffUL))
780	flags |= 0x0000ffff;	969	flags |= ev_recommended_backends ();
781		970
782	method = 0;	971	backend = 0;
		972	backend_fd = -1;
		973	#if EV_USE_INOTIFY
		974	fs_fd = -2;
		975	#endif
		976
		977	#if EV_USE_PORT
		978	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		979	#endif
783	#if EV_USE_KQUEUE	980	#if EV_USE_KQUEUE
784	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);	981	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
785	#endif	982	#endif
786	#if EV_USE_EPOLL	983	#if EV_USE_EPOLL
787	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);	984	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
788	#endif	985	#endif
789	#if EV_USE_POLL	986	#if EV_USE_POLL
790	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);	987	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
791	#endif	988	#endif
792	#if EV_USE_SELECT	989	#if EV_USE_SELECT
793	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);	990	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
794	#endif	991	#endif
795		992
796	ev_init (&sigev, sigcb);	993	ev_init (&sigev, sigcb);
797	ev_set_priority (&sigev, EV_MAXPRI);	994	ev_set_priority (&sigev, EV_MAXPRI);
798	}	995	}
799	}	996	}
800		997
801	void	998	static void noinline
802	loop_destroy (EV_P)	999	loop_destroy (EV_P)
803	{	1000	{
804	int i;	1001	int i;
805		1002
		1003	#if EV_USE_INOTIFY
		1004	if (fs_fd >= 0)
		1005	close (fs_fd);
		1006	#endif
		1007
		1008	if (backend_fd >= 0)
		1009	close (backend_fd);
		1010
		1011	#if EV_USE_PORT
		1012	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		1013	#endif
806	#if EV_USE_KQUEUE	1014	#if EV_USE_KQUEUE
807	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1015	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
808	#endif	1016	#endif
809	#if EV_USE_EPOLL	1017	#if EV_USE_EPOLL
810	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1018	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
811	#endif	1019	#endif
812	#if EV_USE_POLL	1020	#if EV_USE_POLL
813	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1021	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
814	#endif	1022	#endif
815	#if EV_USE_SELECT	1023	#if EV_USE_SELECT
816	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1024	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
817	#endif	1025	#endif
818		1026
819	for (i = NUMPRI; i--; )	1027	for (i = NUMPRI; i--; )
		1028	{
820	array_free (pending, [i]);	1029	array_free (pending, [i]);
		1030	#if EV_IDLE_ENABLE
		1031	array_free (idle, [i]);
		1032	#endif
		1033	}
821		1034
822	/* have to use the microsoft-never-gets-it-right macro */	1035	/* have to use the microsoft-never-gets-it-right macro */
823	array_free (fdchange, EMPTY0);	1036	array_free (fdchange, EMPTY);
824	array_free (timer, EMPTY0);	1037	array_free (timer, EMPTY);
825	#if EV_PERIODICS	1038	#if EV_PERIODIC_ENABLE
826	array_free (periodic, EMPTY0);	1039	array_free (periodic, EMPTY);
827	#endif	1040	#endif
828	array_free (idle, EMPTY0);
829	array_free (prepare, EMPTY0);	1041	array_free (prepare, EMPTY);
830	array_free (check, EMPTY0);	1042	array_free (check, EMPTY);
831		1043
832	method = 0;	1044	backend = 0;
833	}	1045	}
834		1046
835	static void	1047	void inline_size infy_fork (EV_P);
		1048
		1049	void inline_size
836	loop_fork (EV_P)	1050	loop_fork (EV_P)
837	{	1051	{
		1052	#if EV_USE_PORT
		1053	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1054	#endif
		1055	#if EV_USE_KQUEUE
		1056	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1057	#endif
838	#if EV_USE_EPOLL	1058	#if EV_USE_EPOLL
839	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1059	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
840	#endif	1060	#endif
841	#if EV_USE_KQUEUE	1061	#if EV_USE_INOTIFY
842	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1062	infy_fork (EV_A);
843	#endif	1063	#endif
844		1064
845	if (ev_is_active (&sigev))	1065	if (ev_is_active (&sigev))
846	{	1066	{
847	/* default loop */	1067	/* default loop */
…		…
868		1088
869	memset (loop, 0, sizeof (struct ev_loop));	1089	memset (loop, 0, sizeof (struct ev_loop));
870		1090
871	loop_init (EV_A_ flags);	1091	loop_init (EV_A_ flags);
872		1092
873	if (ev_method (EV_A))	1093	if (ev_backend (EV_A))
874	return loop;	1094	return loop;
875		1095
876	return 0;	1096	return 0;
877	}	1097	}
878		1098
…		…
891		1111
892	#endif	1112	#endif
893		1113
894	#if EV_MULTIPLICITY	1114	#if EV_MULTIPLICITY
895	struct ev_loop *	1115	struct ev_loop *
		1116	ev_default_loop_init (unsigned int flags)
896	#else	1117	#else
897	int	1118	int
898	#endif
899	ev_default_loop (unsigned int flags)	1119	ev_default_loop (unsigned int flags)
		1120	#endif
900	{	1121	{
901	if (sigpipe [0] == sigpipe [1])	1122	if (sigpipe [0] == sigpipe [1])
902	if (pipe (sigpipe))	1123	if (pipe (sigpipe))
903	return 0;	1124	return 0;
904		1125
905	if (!default_loop)	1126	if (!ev_default_loop_ptr)
906	{	1127	{
907	#if EV_MULTIPLICITY	1128	#if EV_MULTIPLICITY
908	struct ev_loop *loop = default_loop = &default_loop_struct;	1129	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
909	#else	1130	#else
910	default_loop = 1;	1131	ev_default_loop_ptr = 1;
911	#endif	1132	#endif
912		1133
913	loop_init (EV_A_ flags);	1134	loop_init (EV_A_ flags);
914		1135
915	if (ev_method (EV_A))	1136	if (ev_backend (EV_A))
916	{	1137	{
917	siginit (EV_A);	1138	siginit (EV_A);
918		1139
919	#ifndef _WIN32	1140	#ifndef _WIN32
920	ev_signal_init (&childev, childcb, SIGCHLD);	1141	ev_signal_init (&childev, childcb, SIGCHLD);
…		…
922	ev_signal_start (EV_A_ &childev);	1143	ev_signal_start (EV_A_ &childev);
923	ev_unref (EV_A); /* child watcher should not keep loop alive */	1144	ev_unref (EV_A); /* child watcher should not keep loop alive */
924	#endif	1145	#endif
925	}	1146	}
926	else	1147	else
927	default_loop = 0;	1148	ev_default_loop_ptr = 0;
928	}	1149	}
929		1150
930	return default_loop;	1151	return ev_default_loop_ptr;
931	}	1152	}
932		1153
933	void	1154	void
934	ev_default_destroy (void)	1155	ev_default_destroy (void)
935	{	1156	{
936	#if EV_MULTIPLICITY	1157	#if EV_MULTIPLICITY
937	struct ev_loop *loop = default_loop;	1158	struct ev_loop *loop = ev_default_loop_ptr;
938	#endif	1159	#endif
939		1160
940	#ifndef _WIN32	1161	#ifndef _WIN32
941	ev_ref (EV_A); /* child watcher */	1162	ev_ref (EV_A); /* child watcher */
942	ev_signal_stop (EV_A_ &childev);	1163	ev_signal_stop (EV_A_ &childev);
…		…
953		1174
954	void	1175	void
955	ev_default_fork (void)	1176	ev_default_fork (void)
956	{	1177	{
957	#if EV_MULTIPLICITY	1178	#if EV_MULTIPLICITY
958	struct ev_loop *loop = default_loop;	1179	struct ev_loop *loop = ev_default_loop_ptr;
959	#endif	1180	#endif
960		1181
961	if (method)	1182	if (backend)
962	postfork = 1;	1183	postfork = 1;
963	}	1184	}
964		1185
965	/*****************************************************************************/	1186	/*****************************************************************************/
966		1187
967	static int	1188	void
968	any_pending (EV_P)	1189	ev_invoke (EV_P_ void *w, int revents)
969	{	1190	{
970	int pri;	1191	EV_CB_INVOKE ((W)w, revents);
971
972	for (pri = NUMPRI; pri--; )
973	if (pendingcnt [pri])
974	return 1;
975
976	return 0;
977	}	1192	}
978		1193
979	static void	1194	void inline_speed
980	call_pending (EV_P)	1195	call_pending (EV_P)
981	{	1196	{
982	int pri;	1197	int pri;
983		1198
984	for (pri = NUMPRI; pri--; )	1199	for (pri = NUMPRI; pri--; )
985	while (pendingcnt [pri])	1200	while (pendingcnt [pri])
986	{	1201	{
987	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1202	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
988		1203
989	if (p->w)	1204	if (expect_true (p->w))
990	{	1205	{
		1206	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1207
991	p->w->pending = 0;	1208	p->w->pending = 0;
992	EV_CB_INVOKE (p->w, p->events);	1209	EV_CB_INVOKE (p->w, p->events);
993	}	1210	}
994	}	1211	}
995	}	1212	}
996		1213
997	static void	1214	void inline_size
998	timers_reify (EV_P)	1215	timers_reify (EV_P)
999	{	1216	{
1000	while (timercnt && ((WT)timers [0])->at <= mn_now)	1217	while (timercnt && ((WT)timers [0])->at <= mn_now)
1001	{	1218	{
1002	struct ev_timer *w = timers [0];	1219	ev_timer *w = (ev_timer *)timers [0];
1003		1220
1004	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1221	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1005		1222
1006	/* first reschedule or stop timer */	1223	/* first reschedule or stop timer */
1007	if (w->repeat)	1224	if (w->repeat)
1008	{	1225	{
1009	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1226	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1010		1227
1011	((WT)w)->at += w->repeat;	1228	((WT)w)->at += w->repeat;
1012	if (((WT)w)->at < mn_now)	1229	if (((WT)w)->at < mn_now)
1013	((WT)w)->at = mn_now;	1230	((WT)w)->at = mn_now;
1014		1231
1015	downheap ((WT *)timers, timercnt, 0);	1232	downheap (timers, timercnt, 0);
1016	}	1233	}
1017	else	1234	else
1018	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1235	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1019		1236
1020	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1237	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1021	}	1238	}
1022	}	1239	}
1023		1240
1024	#if EV_PERIODICS	1241	#if EV_PERIODIC_ENABLE
1025	static void	1242	void inline_size
1026	periodics_reify (EV_P)	1243	periodics_reify (EV_P)
1027	{	1244	{
1028	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1245	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1029	{	1246	{
1030	struct ev_periodic *w = periodics [0];	1247	ev_periodic *w = (ev_periodic *)periodics [0];
1031		1248
1032	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1249	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1033		1250
1034	/* first reschedule or stop timer */	1251	/* first reschedule or stop timer */
1035	if (w->reschedule_cb)	1252	if (w->reschedule_cb)
1036	{	1253	{
1037	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1254	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1038	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1255	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1039	downheap ((WT *)periodics, periodiccnt, 0);	1256	downheap (periodics, periodiccnt, 0);
1040	}	1257	}
1041	else if (w->interval)	1258	else if (w->interval)
1042	{	1259	{
1043	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1260	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1261	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1044	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1262	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1045	downheap ((WT *)periodics, periodiccnt, 0);	1263	downheap (periodics, periodiccnt, 0);
1046	}	1264	}
1047	else	1265	else
1048	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1266	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1049		1267
1050	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1268	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1051	}	1269	}
1052	}	1270	}
1053		1271
1054	static void	1272	static void noinline
1055	periodics_reschedule (EV_P)	1273	periodics_reschedule (EV_P)
1056	{	1274	{
1057	int i;	1275	int i;
1058		1276
1059	/* adjust periodics after time jump */	1277	/* adjust periodics after time jump */
1060	for (i = 0; i < periodiccnt; ++i)	1278	for (i = 0; i < periodiccnt; ++i)
1061	{	1279	{
1062	struct ev_periodic *w = periodics [i];	1280	ev_periodic *w = (ev_periodic *)periodics [i];
1063		1281
1064	if (w->reschedule_cb)	1282	if (w->reschedule_cb)
1065	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1283	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1066	else if (w->interval)	1284	else if (w->interval)
1067	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1285	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1068	}	1286	}
1069		1287
1070	/* now rebuild the heap */	1288	/* now rebuild the heap */
1071	for (i = periodiccnt >> 1; i--; )	1289	for (i = periodiccnt >> 1; i--; )
1072	downheap ((WT *)periodics, periodiccnt, i);	1290	downheap (periodics, periodiccnt, i);
1073	}	1291	}
1074	#endif	1292	#endif
1075		1293
1076	inline int	1294	#if EV_IDLE_ENABLE
1077	time_update_monotonic (EV_P)	1295	void inline_size
		1296	idle_reify (EV_P)
1078	{	1297	{
		1298	if (expect_false (idleall))
		1299	{
		1300	int pri;
		1301
		1302	for (pri = NUMPRI; pri--; )
		1303	{
		1304	if (pendingcnt [pri])
		1305	break;
		1306
		1307	if (idlecnt [pri])
		1308	{
		1309	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1310	break;
		1311	}
		1312	}
		1313	}
		1314	}
		1315	#endif
		1316
		1317	void inline_speed
		1318	time_update (EV_P_ ev_tstamp max_block)
		1319	{
		1320	int i;
		1321
		1322	#if EV_USE_MONOTONIC
		1323	if (expect_true (have_monotonic))
		1324	{
		1325	ev_tstamp odiff = rtmn_diff;
		1326
1079	mn_now = get_clock ();	1327	mn_now = get_clock ();
1080		1328
		1329	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1330	/* interpolate in the meantime */
1081	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1331	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1082	{	1332	{
1083	ev_rt_now = rtmn_diff + mn_now;	1333	ev_rt_now = rtmn_diff + mn_now;
1084	return 0;	1334	return;
1085	}	1335	}
1086	else	1336
1087	{
1088	now_floor = mn_now;	1337	now_floor = mn_now;
1089	ev_rt_now = ev_time ();	1338	ev_rt_now = ev_time ();
1090	return 1;
1091	}
1092	}
1093		1339
1094	static void	1340	/* loop a few times, before making important decisions.
1095	time_update (EV_P)	1341	* on the choice of "4": one iteration isn't enough,
1096	{	1342	* in case we get preempted during the calls to
1097	int i;	1343	* ev_time and get_clock. a second call is almost guaranteed
1098		1344	* to succeed in that case, though. and looping a few more times
1099	#if EV_USE_MONOTONIC	1345	* doesn't hurt either as we only do this on time-jumps or
1100	if (expect_true (have_monotonic))	1346	* in the unlikely event of having been preempted here.
1101	{	1347	*/
1102	if (time_update_monotonic (EV_A))	1348	for (i = 4; --i; )
1103	{	1349	{
1104	ev_tstamp odiff = rtmn_diff;
1105
1106	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1107	{
1108	rtmn_diff = ev_rt_now - mn_now;	1350	rtmn_diff = ev_rt_now - mn_now;
1109		1351
1110	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1352	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1111	return; /* all is well */	1353	return; /* all is well */
1112		1354
1113	ev_rt_now = ev_time ();	1355	ev_rt_now = ev_time ();
1114	mn_now = get_clock ();	1356	mn_now = get_clock ();
1115	now_floor = mn_now;	1357	now_floor = mn_now;
1116	}	1358	}
1117		1359
1118	# if EV_PERIODICS	1360	# if EV_PERIODIC_ENABLE
		1361	periodics_reschedule (EV_A);
		1362	# endif
		1363	/* no timer adjustment, as the monotonic clock doesn't jump */
		1364	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1365	}
		1366	else
		1367	#endif
		1368	{
		1369	ev_rt_now = ev_time ();
		1370
		1371	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1372	{
		1373	#if EV_PERIODIC_ENABLE
1119	periodics_reschedule (EV_A);	1374	periodics_reschedule (EV_A);
1120	# endif	1375	#endif
1121	/* no timer adjustment, as the monotonic clock doesn't jump */
1122	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1123	}
1124	}
1125	else
1126	#endif
1127	{
1128	ev_rt_now = ev_time ();
1129
1130	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1131	{
1132	#if EV_PERIODICS
1133	periodics_reschedule (EV_A);
1134	#endif
1135
1136	/* adjust timers. this is easy, as the offset is the same for all */	1376	/* adjust timers. this is easy, as the offset is the same for all of them */
1137	for (i = 0; i < timercnt; ++i)	1377	for (i = 0; i < timercnt; ++i)
1138	((WT)timers [i])->at += ev_rt_now - mn_now;	1378	((WT)timers [i])->at += ev_rt_now - mn_now;
1139	}	1379	}
1140		1380
1141	mn_now = ev_rt_now;	1381	mn_now = ev_rt_now;
…		…
1157	static int loop_done;	1397	static int loop_done;
1158		1398
1159	void	1399	void
1160	ev_loop (EV_P_ int flags)	1400	ev_loop (EV_P_ int flags)
1161	{	1401	{
1162	double block;
1163	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1402	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1403	? EVUNLOOP_ONE
		1404	: EVUNLOOP_CANCEL;
1164		1405
1165	while (activecnt)	1406	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1407
		1408	do
1166	{	1409	{
		1410	#ifndef _WIN32
		1411	if (expect_false (curpid)) /* penalise the forking check even more */
		1412	if (expect_false (getpid () != curpid))
		1413	{
		1414	curpid = getpid ();
		1415	postfork = 1;
		1416	}
		1417	#endif
		1418
		1419	#if EV_FORK_ENABLE
		1420	/* we might have forked, so queue fork handlers */
		1421	if (expect_false (postfork))
		1422	if (forkcnt)
		1423	{
		1424	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1425	call_pending (EV_A);
		1426	}
		1427	#endif
		1428
1167	/* queue check watchers (and execute them) */	1429	/* queue prepare watchers (and execute them) */
1168	if (expect_false (preparecnt))	1430	if (expect_false (preparecnt))
1169	{	1431	{
1170	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1432	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1171	call_pending (EV_A);	1433	call_pending (EV_A);
1172	}	1434	}
1173		1435
		1436	if (expect_false (!activecnt))
		1437	break;
		1438
1174	/* we might have forked, so reify kernel state if necessary */	1439	/* we might have forked, so reify kernel state if necessary */
1175	if (expect_false (postfork))	1440	if (expect_false (postfork))
1176	loop_fork (EV_A);	1441	loop_fork (EV_A);
1177		1442
1178	/* update fd-related kernel structures */	1443	/* update fd-related kernel structures */
1179	fd_reify (EV_A);	1444	fd_reify (EV_A);
1180		1445
1181	/* calculate blocking time */	1446	/* calculate blocking time */
		1447	{
		1448	ev_tstamp block;
1182		1449
1183	/* we only need this for !monotonic clock or timers, but as we basically	1450	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1184	always have timers, we just calculate it always */	1451	block = 0.; /* do not block at all */
1185	#if EV_USE_MONOTONIC
1186	if (expect_true (have_monotonic))
1187	time_update_monotonic (EV_A);
1188	else	1452	else
1189	#endif
1190	{	1453	{
1191	ev_rt_now = ev_time ();	1454	/* update time to cancel out callback processing overhead */
1192	mn_now = ev_rt_now;	1455	time_update (EV_A_ 1e100);
1193	}
1194		1456
1195	if (flags & EVLOOP_NONBLOCK || idlecnt)
1196	block = 0.;
1197	else
1198	{
1199	block = MAX_BLOCKTIME;	1457	block = MAX_BLOCKTIME;
1200		1458
1201	if (timercnt)	1459	if (timercnt)
1202	{	1460	{
1203	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1461	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1204	if (block > to) block = to;	1462	if (block > to) block = to;
1205	}	1463	}
1206		1464
1207	#if EV_PERIODICS	1465	#if EV_PERIODIC_ENABLE
1208	if (periodiccnt)	1466	if (periodiccnt)
1209	{	1467	{
1210	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1468	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1211	if (block > to) block = to;	1469	if (block > to) block = to;
1212	}	1470	}
1213	#endif	1471	#endif
1214		1472
1215	if (block < 0.) block = 0.;	1473	if (expect_false (block < 0.)) block = 0.;
1216	}	1474	}
1217		1475
		1476	++loop_count;
1218	method_poll (EV_A_ block);	1477	backend_poll (EV_A_ block);
1219		1478
1220	/* update ev_rt_now, do magic */	1479	/* update ev_rt_now, do magic */
1221	time_update (EV_A);	1480	time_update (EV_A_ block);
		1481	}
1222		1482
1223	/* queue pending timers and reschedule them */	1483	/* queue pending timers and reschedule them */
1224	timers_reify (EV_A); /* relative timers called last */	1484	timers_reify (EV_A); /* relative timers called last */
1225	#if EV_PERIODICS	1485	#if EV_PERIODIC_ENABLE
1226	periodics_reify (EV_A); /* absolute timers called first */	1486	periodics_reify (EV_A); /* absolute timers called first */
1227	#endif	1487	#endif
1228		1488
		1489	#if EV_IDLE_ENABLE
1229	/* queue idle watchers unless io or timers are pending */	1490	/* queue idle watchers unless other events are pending */
1230	if (idlecnt && !any_pending (EV_A))	1491	idle_reify (EV_A);
1231	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1492	#endif
1232		1493
1233	/* queue check watchers, to be executed first */	1494	/* queue check watchers, to be executed first */
1234	if (checkcnt)	1495	if (expect_false (checkcnt))
1235	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1496	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1236		1497
1237	call_pending (EV_A);	1498	call_pending (EV_A);
1238		1499
1239	if (loop_done)
1240	break;
1241	}	1500	}
		1501	while (expect_true (activecnt && !loop_done));
1242		1502
1243	if (loop_done != 2)	1503	if (loop_done == EVUNLOOP_ONE)
1244	loop_done = 0;	1504	loop_done = EVUNLOOP_CANCEL;
1245	}	1505	}
1246		1506
1247	void	1507	void
1248	ev_unloop (EV_P_ int how)	1508	ev_unloop (EV_P_ int how)
1249	{	1509	{
1250	loop_done = how;	1510	loop_done = how;
1251	}	1511	}
1252		1512
1253	/*****************************************************************************/	1513	/*****************************************************************************/
1254		1514
1255	inline void	1515	void inline_size
1256	wlist_add (WL *head, WL elem)	1516	wlist_add (WL *head, WL elem)
1257	{	1517	{
1258	elem->next = *head;	1518	elem->next = *head;
1259	*head = elem;	1519	*head = elem;
1260	}	1520	}
1261		1521
1262	inline void	1522	void inline_size
1263	wlist_del (WL *head, WL elem)	1523	wlist_del (WL *head, WL elem)
1264	{	1524	{
1265	while (*head)	1525	while (*head)
1266	{	1526	{
1267	if (*head == elem)	1527	if (*head == elem)
…		…
1272		1532
1273	head = &(*head)->next;	1533	head = &(*head)->next;
1274	}	1534	}
1275	}	1535	}
1276		1536
1277	inline void	1537	void inline_speed
1278	ev_clear_pending (EV_P_ W w)	1538	clear_pending (EV_P_ W w)
1279	{	1539	{
1280	if (w->pending)	1540	if (w->pending)
1281	{	1541	{
1282	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1542	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1283	w->pending = 0;	1543	w->pending = 0;
1284	}	1544	}
1285	}	1545	}
1286		1546
1287	inline void	1547	int
		1548	ev_clear_pending (EV_P_ void *w)
		1549	{
		1550	W w_ = (W)w;
		1551	int pending = w_->pending;
		1552
		1553	if (expect_true (pending))
		1554	{
		1555	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1556	w_->pending = 0;
		1557	p->w = 0;
		1558	return p->events;
		1559	}
		1560	else
		1561	return 0;
		1562	}
		1563
		1564	void inline_size
		1565	pri_adjust (EV_P_ W w)
		1566	{
		1567	int pri = w->priority;
		1568	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1569	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1570	w->priority = pri;
		1571	}
		1572
		1573	void inline_speed
1288	ev_start (EV_P_ W w, int active)	1574	ev_start (EV_P_ W w, int active)
1289	{	1575	{
1290	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1576	pri_adjust (EV_A_ w);
1291	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1292
1293	w->active = active;	1577	w->active = active;
1294	ev_ref (EV_A);	1578	ev_ref (EV_A);
1295	}	1579	}
1296		1580
1297	inline void	1581	void inline_size
1298	ev_stop (EV_P_ W w)	1582	ev_stop (EV_P_ W w)
1299	{	1583	{
1300	ev_unref (EV_A);	1584	ev_unref (EV_A);
1301	w->active = 0;	1585	w->active = 0;
1302	}	1586	}
1303		1587
1304	/*****************************************************************************/	1588	/*****************************************************************************/
1305		1589
1306	void	1590	void noinline
1307	ev_io_start (EV_P_ struct ev_io *w)	1591	ev_io_start (EV_P_ ev_io *w)
1308	{	1592	{
1309	int fd = w->fd;	1593	int fd = w->fd;
1310		1594
1311	if (ev_is_active (w))	1595	if (expect_false (ev_is_active (w)))
1312	return;	1596	return;
1313		1597
1314	assert (("ev_io_start called with negative fd", fd >= 0));	1598	assert (("ev_io_start called with negative fd", fd >= 0));
1315		1599
1316	ev_start (EV_A_ (W)w, 1);	1600	ev_start (EV_A_ (W)w, 1);
…		…
1318	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1602	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1319		1603
1320	fd_change (EV_A_ fd);	1604	fd_change (EV_A_ fd);
1321	}	1605	}
1322		1606
1323	void	1607	void noinline
1324	ev_io_stop (EV_P_ struct ev_io *w)	1608	ev_io_stop (EV_P_ ev_io *w)
1325	{	1609	{
1326	ev_clear_pending (EV_A_ (W)w);	1610	clear_pending (EV_A_ (W)w);
1327	if (!ev_is_active (w))	1611	if (expect_false (!ev_is_active (w)))
1328	return;	1612	return;
1329		1613
1330	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1614	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1331		1615
1332	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1616	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1333	ev_stop (EV_A_ (W)w);	1617	ev_stop (EV_A_ (W)w);
1334		1618
1335	fd_change (EV_A_ w->fd);	1619	fd_change (EV_A_ w->fd);
1336	}	1620	}
1337		1621
1338	void	1622	void noinline
1339	ev_timer_start (EV_P_ struct ev_timer *w)	1623	ev_timer_start (EV_P_ ev_timer *w)
1340	{	1624	{
1341	if (ev_is_active (w))	1625	if (expect_false (ev_is_active (w)))
1342	return;	1626	return;
1343		1627
1344	((WT)w)->at += mn_now;	1628	((WT)w)->at += mn_now;
1345		1629
1346	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1630	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1347		1631
1348	ev_start (EV_A_ (W)w, ++timercnt);	1632	ev_start (EV_A_ (W)w, ++timercnt);
1349	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);	1633	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1350	timers [timercnt - 1] = w;	1634	timers [timercnt - 1] = (WT)w;
1351	upheap ((WT *)timers, timercnt - 1);	1635	upheap (timers, timercnt - 1);
1352		1636
1353	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1637	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1354	}	1638	}
1355		1639
1356	void	1640	void noinline
1357	ev_timer_stop (EV_P_ struct ev_timer *w)	1641	ev_timer_stop (EV_P_ ev_timer *w)
1358	{	1642	{
1359	ev_clear_pending (EV_A_ (W)w);	1643	clear_pending (EV_A_ (W)w);
1360	if (!ev_is_active (w))	1644	if (expect_false (!ev_is_active (w)))
1361	return;	1645	return;
1362		1646
1363	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1647	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1364		1648
1365	if (((W)w)->active < timercnt--)	1649	{
		1650	int active = ((W)w)->active;
		1651
		1652	if (expect_true (--active < --timercnt))
1366	{	1653	{
1367	timers [((W)w)->active - 1] = timers [timercnt];	1654	timers [active] = timers [timercnt];
1368	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1655	adjustheap (timers, timercnt, active);
1369	}	1656	}
		1657	}
1370		1658
1371	((WT)w)->at -= mn_now;	1659	((WT)w)->at -= mn_now;
1372		1660
1373	ev_stop (EV_A_ (W)w);	1661	ev_stop (EV_A_ (W)w);
1374	}	1662	}
1375		1663
1376	void	1664	void noinline
1377	ev_timer_again (EV_P_ struct ev_timer *w)	1665	ev_timer_again (EV_P_ ev_timer *w)
1378	{	1666	{
1379	if (ev_is_active (w))	1667	if (ev_is_active (w))
1380	{	1668	{
1381	if (w->repeat)	1669	if (w->repeat)
1382	{	1670	{
1383	((WT)w)->at = mn_now + w->repeat;	1671	((WT)w)->at = mn_now + w->repeat;
1384	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1672	adjustheap (timers, timercnt, ((W)w)->active - 1);
1385	}	1673	}
1386	else	1674	else
1387	ev_timer_stop (EV_A_ w);	1675	ev_timer_stop (EV_A_ w);
1388	}	1676	}
1389	else if (w->repeat)	1677	else if (w->repeat)
…		…
1391	w->at = w->repeat;	1679	w->at = w->repeat;
1392	ev_timer_start (EV_A_ w);	1680	ev_timer_start (EV_A_ w);
1393	}	1681	}
1394	}	1682	}
1395		1683
1396	#if EV_PERIODICS	1684	#if EV_PERIODIC_ENABLE
1397	void	1685	void noinline
1398	ev_periodic_start (EV_P_ struct ev_periodic *w)	1686	ev_periodic_start (EV_P_ ev_periodic *w)
1399	{	1687	{
1400	if (ev_is_active (w))	1688	if (expect_false (ev_is_active (w)))
1401	return;	1689	return;
1402		1690
1403	if (w->reschedule_cb)	1691	if (w->reschedule_cb)
1404	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1692	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1405	else if (w->interval)	1693	else if (w->interval)
1406	{	1694	{
1407	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1695	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1408	/* this formula differs from the one in periodic_reify because we do not always round up */	1696	/* this formula differs from the one in periodic_reify because we do not always round up */
1409	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1697	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1410	}	1698	}
		1699	else
		1700	((WT)w)->at = w->offset;
1411		1701
1412	ev_start (EV_A_ (W)w, ++periodiccnt);	1702	ev_start (EV_A_ (W)w, ++periodiccnt);
1413	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1703	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1414	periodics [periodiccnt - 1] = w;	1704	periodics [periodiccnt - 1] = (WT)w;
1415	upheap ((WT *)periodics, periodiccnt - 1);	1705	upheap (periodics, periodiccnt - 1);
1416		1706
1417	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1707	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1418	}	1708	}
1419		1709
1420	void	1710	void noinline
1421	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1711	ev_periodic_stop (EV_P_ ev_periodic *w)
1422	{	1712	{
1423	ev_clear_pending (EV_A_ (W)w);	1713	clear_pending (EV_A_ (W)w);
1424	if (!ev_is_active (w))	1714	if (expect_false (!ev_is_active (w)))
1425	return;	1715	return;
1426		1716
1427	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1717	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1428		1718
1429	if (((W)w)->active < periodiccnt--)	1719	{
		1720	int active = ((W)w)->active;
		1721
		1722	if (expect_true (--active < --periodiccnt))
1430	{	1723	{
1431	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1724	periodics [active] = periodics [periodiccnt];
1432	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1725	adjustheap (periodics, periodiccnt, active);
1433	}	1726	}
		1727	}
1434		1728
1435	ev_stop (EV_A_ (W)w);	1729	ev_stop (EV_A_ (W)w);
1436	}	1730	}
1437		1731
1438	void	1732	void noinline
1439	ev_periodic_again (EV_P_ struct ev_periodic *w)	1733	ev_periodic_again (EV_P_ ev_periodic *w)
1440	{	1734	{
1441	/* TODO: use adjustheap and recalculation */	1735	/* TODO: use adjustheap and recalculation */
1442	ev_periodic_stop (EV_A_ w);	1736	ev_periodic_stop (EV_A_ w);
1443	ev_periodic_start (EV_A_ w);	1737	ev_periodic_start (EV_A_ w);
1444	}	1738	}
1445	#endif	1739	#endif
1446		1740
1447	void
1448	ev_idle_start (EV_P_ struct ev_idle *w)
1449	{
1450	if (ev_is_active (w))
1451	return;
1452
1453	ev_start (EV_A_ (W)w, ++idlecnt);
1454	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1455	idles [idlecnt - 1] = w;
1456	}
1457
1458	void
1459	ev_idle_stop (EV_P_ struct ev_idle *w)
1460	{
1461	ev_clear_pending (EV_A_ (W)w);
1462	if (!ev_is_active (w))
1463	return;
1464
1465	idles [((W)w)->active - 1] = idles [--idlecnt];
1466	ev_stop (EV_A_ (W)w);
1467	}
1468
1469	void
1470	ev_prepare_start (EV_P_ struct ev_prepare *w)
1471	{
1472	if (ev_is_active (w))
1473	return;
1474
1475	ev_start (EV_A_ (W)w, ++preparecnt);
1476	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1477	prepares [preparecnt - 1] = w;
1478	}
1479
1480	void
1481	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1482	{
1483	ev_clear_pending (EV_A_ (W)w);
1484	if (!ev_is_active (w))
1485	return;
1486
1487	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1488	ev_stop (EV_A_ (W)w);
1489	}
1490
1491	void
1492	ev_check_start (EV_P_ struct ev_check *w)
1493	{
1494	if (ev_is_active (w))
1495	return;
1496
1497	ev_start (EV_A_ (W)w, ++checkcnt);
1498	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1499	checks [checkcnt - 1] = w;
1500	}
1501
1502	void
1503	ev_check_stop (EV_P_ struct ev_check *w)
1504	{
1505	ev_clear_pending (EV_A_ (W)w);
1506	if (!ev_is_active (w))
1507	return;
1508
1509	checks [((W)w)->active - 1] = checks [--checkcnt];
1510	ev_stop (EV_A_ (W)w);
1511	}
1512
1513	#ifndef SA_RESTART	1741	#ifndef SA_RESTART
1514	# define SA_RESTART 0	1742	# define SA_RESTART 0
1515	#endif	1743	#endif
1516		1744
1517	void	1745	void noinline
1518	ev_signal_start (EV_P_ struct ev_signal *w)	1746	ev_signal_start (EV_P_ ev_signal *w)
1519	{	1747	{
1520	#if EV_MULTIPLICITY	1748	#if EV_MULTIPLICITY
1521	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1749	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1522	#endif	1750	#endif
1523	if (ev_is_active (w))	1751	if (expect_false (ev_is_active (w)))
1524	return;	1752	return;
1525		1753
1526	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1754	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1527		1755
		1756	{
		1757	#ifndef _WIN32
		1758	sigset_t full, prev;
		1759	sigfillset (&full);
		1760	sigprocmask (SIG_SETMASK, &full, &prev);
		1761	#endif
		1762
		1763	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1764
		1765	#ifndef _WIN32
		1766	sigprocmask (SIG_SETMASK, &prev, 0);
		1767	#endif
		1768	}
		1769
1528	ev_start (EV_A_ (W)w, 1);	1770	ev_start (EV_A_ (W)w, 1);
1529	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1530	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1771	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1531		1772
1532	if (!((WL)w)->next)	1773	if (!((WL)w)->next)
1533	{	1774	{
1534	#if _WIN32	1775	#if _WIN32
…		…
1541	sigaction (w->signum, &sa, 0);	1782	sigaction (w->signum, &sa, 0);
1542	#endif	1783	#endif
1543	}	1784	}
1544	}	1785	}
1545		1786
1546	void	1787	void noinline
1547	ev_signal_stop (EV_P_ struct ev_signal *w)	1788	ev_signal_stop (EV_P_ ev_signal *w)
1548	{	1789	{
1549	ev_clear_pending (EV_A_ (W)w);	1790	clear_pending (EV_A_ (W)w);
1550	if (!ev_is_active (w))	1791	if (expect_false (!ev_is_active (w)))
1551	return;	1792	return;
1552		1793
1553	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1794	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1554	ev_stop (EV_A_ (W)w);	1795	ev_stop (EV_A_ (W)w);
1555		1796
1556	if (!signals [w->signum - 1].head)	1797	if (!signals [w->signum - 1].head)
1557	signal (w->signum, SIG_DFL);	1798	signal (w->signum, SIG_DFL);
1558	}	1799	}
1559		1800
1560	void	1801	void
1561	ev_child_start (EV_P_ struct ev_child *w)	1802	ev_child_start (EV_P_ ev_child *w)
1562	{	1803	{
1563	#if EV_MULTIPLICITY	1804	#if EV_MULTIPLICITY
1564	assert (("child watchers are only supported in the default loop", loop == default_loop));	1805	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1565	#endif	1806	#endif
1566	if (ev_is_active (w))	1807	if (expect_false (ev_is_active (w)))
1567	return;	1808	return;
1568		1809
1569	ev_start (EV_A_ (W)w, 1);	1810	ev_start (EV_A_ (W)w, 1);
1570	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1811	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1571	}	1812	}
1572		1813
1573	void	1814	void
1574	ev_child_stop (EV_P_ struct ev_child *w)	1815	ev_child_stop (EV_P_ ev_child *w)
1575	{	1816	{
1576	ev_clear_pending (EV_A_ (W)w);	1817	clear_pending (EV_A_ (W)w);
1577	if (!ev_is_active (w))	1818	if (expect_false (!ev_is_active (w)))
1578	return;	1819	return;
1579		1820
1580	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1821	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1581	ev_stop (EV_A_ (W)w);	1822	ev_stop (EV_A_ (W)w);
1582	}	1823	}
1583		1824
		1825	#if EV_STAT_ENABLE
		1826
		1827	# ifdef _WIN32
		1828	# undef lstat
		1829	# define lstat(a,b) _stati64 (a,b)
		1830	# endif
		1831
		1832	#define DEF_STAT_INTERVAL 5.0074891
		1833	#define MIN_STAT_INTERVAL 0.1074891
		1834
		1835	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1836
		1837	#if EV_USE_INOTIFY
		1838	# define EV_INOTIFY_BUFSIZE 8192
		1839
		1840	static void noinline
		1841	infy_add (EV_P_ ev_stat *w)
		1842	{
		1843	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);
		1844
		1845	if (w->wd < 0)
		1846	{
		1847	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1848
		1849	/* monitor some parent directory for speedup hints */
		1850	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1851	{
		1852	char path [4096];
		1853	strcpy (path, w->path);
		1854
		1855	do
		1856	{
		1857	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1858	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1859
		1860	char *pend = strrchr (path, '/');
		1861
		1862	if (!pend)
		1863	break; /* whoops, no '/', complain to your admin */
		1864
		1865	*pend = 0;
		1866	w->wd = inotify_add_watch (fs_fd, path, mask);
		1867	}
		1868	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1869	}
		1870	}
		1871	else
		1872	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1873
		1874	if (w->wd >= 0)
		1875	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1876	}
		1877
		1878	static void noinline
		1879	infy_del (EV_P_ ev_stat *w)
		1880	{
		1881	int slot;
		1882	int wd = w->wd;
		1883
		1884	if (wd < 0)
		1885	return;
		1886
		1887	w->wd = -2;
		1888	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1889	wlist_del (&fs_hash [slot].head, (WL)w);
		1890
		1891	/* remove this watcher, if others are watching it, they will rearm */
		1892	inotify_rm_watch (fs_fd, wd);
		1893	}
		1894
		1895	static void noinline
		1896	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1897	{
		1898	if (slot < 0)
		1899	/* overflow, need to check for all hahs slots */
		1900	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1901	infy_wd (EV_A_ slot, wd, ev);
		1902	else
		1903	{
		1904	WL w_;
		1905
		1906	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1907	{
		1908	ev_stat *w = (ev_stat *)w_;
		1909	w_ = w_->next; /* lets us remove this watcher and all before it */
		1910
		1911	if (w->wd == wd || wd == -1)
		1912	{
		1913	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1914	{
		1915	w->wd = -1;
		1916	infy_add (EV_A_ w); /* re-add, no matter what */
		1917	}
		1918
		1919	stat_timer_cb (EV_A_ &w->timer, 0);
		1920	}
		1921	}
		1922	}
		1923	}
		1924
		1925	static void
		1926	infy_cb (EV_P_ ev_io *w, int revents)
		1927	{
		1928	char buf [EV_INOTIFY_BUFSIZE];
		1929	struct inotify_event *ev = (struct inotify_event *)buf;
		1930	int ofs;
		1931	int len = read (fs_fd, buf, sizeof (buf));
		1932
		1933	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1934	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1935	}
		1936
		1937	void inline_size
		1938	infy_init (EV_P)
		1939	{
		1940	if (fs_fd != -2)
		1941	return;
		1942
		1943	fs_fd = inotify_init ();
		1944
		1945	if (fs_fd >= 0)
		1946	{
		1947	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1948	ev_set_priority (&fs_w, EV_MAXPRI);
		1949	ev_io_start (EV_A_ &fs_w);
		1950	}
		1951	}
		1952
		1953	void inline_size
		1954	infy_fork (EV_P)
		1955	{
		1956	int slot;
		1957
		1958	if (fs_fd < 0)
		1959	return;
		1960
		1961	close (fs_fd);
		1962	fs_fd = inotify_init ();
		1963
		1964	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1965	{
		1966	WL w_ = fs_hash [slot].head;
		1967	fs_hash [slot].head = 0;
		1968
		1969	while (w_)
		1970	{
		1971	ev_stat *w = (ev_stat *)w_;
		1972	w_ = w_->next; /* lets us add this watcher */
		1973
		1974	w->wd = -1;
		1975
		1976	if (fs_fd >= 0)
		1977	infy_add (EV_A_ w); /* re-add, no matter what */
		1978	else
		1979	ev_timer_start (EV_A_ &w->timer);
		1980	}
		1981
		1982	}
		1983	}
		1984
		1985	#endif
		1986
		1987	void
		1988	ev_stat_stat (EV_P_ ev_stat *w)
		1989	{
		1990	if (lstat (w->path, &w->attr) < 0)
		1991	w->attr.st_nlink = 0;
		1992	else if (!w->attr.st_nlink)
		1993	w->attr.st_nlink = 1;
		1994	}
		1995
		1996	static void noinline
		1997	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1998	{
		1999	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2000
		2001	/* we copy this here each the time so that */
		2002	/* prev has the old value when the callback gets invoked */
		2003	w->prev = w->attr;
		2004	ev_stat_stat (EV_A_ w);
		2005
		2006	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2007	if (
		2008	w->prev.st_dev != w->attr.st_dev
		2009	|| w->prev.st_ino != w->attr.st_ino
		2010	|| w->prev.st_mode != w->attr.st_mode
		2011	|| w->prev.st_nlink != w->attr.st_nlink
		2012	|| w->prev.st_uid != w->attr.st_uid
		2013	|| w->prev.st_gid != w->attr.st_gid
		2014	|| w->prev.st_rdev != w->attr.st_rdev
		2015	|| w->prev.st_size != w->attr.st_size
		2016	|| w->prev.st_atime != w->attr.st_atime
		2017	|| w->prev.st_mtime != w->attr.st_mtime
		2018	|| w->prev.st_ctime != w->attr.st_ctime
		2019	) {
		2020	#if EV_USE_INOTIFY
		2021	infy_del (EV_A_ w);
		2022	infy_add (EV_A_ w);
		2023	ev_stat_stat (EV_A_ w); /* avoid race... */
		2024	#endif
		2025
		2026	ev_feed_event (EV_A_ w, EV_STAT);
		2027	}
		2028	}
		2029
		2030	void
		2031	ev_stat_start (EV_P_ ev_stat *w)
		2032	{
		2033	if (expect_false (ev_is_active (w)))
		2034	return;
		2035
		2036	/* since we use memcmp, we need to clear any padding data etc. */
		2037	memset (&w->prev, 0, sizeof (ev_statdata));
		2038	memset (&w->attr, 0, sizeof (ev_statdata));
		2039
		2040	ev_stat_stat (EV_A_ w);
		2041
		2042	if (w->interval < MIN_STAT_INTERVAL)
		2043	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2044
		2045	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2046	ev_set_priority (&w->timer, ev_priority (w));
		2047
		2048	#if EV_USE_INOTIFY
		2049	infy_init (EV_A);
		2050
		2051	if (fs_fd >= 0)
		2052	infy_add (EV_A_ w);
		2053	else
		2054	#endif
		2055	ev_timer_start (EV_A_ &w->timer);
		2056
		2057	ev_start (EV_A_ (W)w, 1);
		2058	}
		2059
		2060	void
		2061	ev_stat_stop (EV_P_ ev_stat *w)
		2062	{
		2063	clear_pending (EV_A_ (W)w);
		2064	if (expect_false (!ev_is_active (w)))
		2065	return;
		2066
		2067	#if EV_USE_INOTIFY
		2068	infy_del (EV_A_ w);
		2069	#endif
		2070	ev_timer_stop (EV_A_ &w->timer);
		2071
		2072	ev_stop (EV_A_ (W)w);
		2073	}
		2074	#endif
		2075
		2076	#if EV_IDLE_ENABLE
		2077	void
		2078	ev_idle_start (EV_P_ ev_idle *w)
		2079	{
		2080	if (expect_false (ev_is_active (w)))
		2081	return;
		2082
		2083	pri_adjust (EV_A_ (W)w);
		2084
		2085	{
		2086	int active = ++idlecnt [ABSPRI (w)];
		2087
		2088	++idleall;
		2089	ev_start (EV_A_ (W)w, active);
		2090
		2091	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2092	idles [ABSPRI (w)][active - 1] = w;
		2093	}
		2094	}
		2095
		2096	void
		2097	ev_idle_stop (EV_P_ ev_idle *w)
		2098	{
		2099	clear_pending (EV_A_ (W)w);
		2100	if (expect_false (!ev_is_active (w)))
		2101	return;
		2102
		2103	{
		2104	int active = ((W)w)->active;
		2105
		2106	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2107	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2108
		2109	ev_stop (EV_A_ (W)w);
		2110	--idleall;
		2111	}
		2112	}
		2113	#endif
		2114
		2115	void
		2116	ev_prepare_start (EV_P_ ev_prepare *w)
		2117	{
		2118	if (expect_false (ev_is_active (w)))
		2119	return;
		2120
		2121	ev_start (EV_A_ (W)w, ++preparecnt);
		2122	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2123	prepares [preparecnt - 1] = w;
		2124	}
		2125
		2126	void
		2127	ev_prepare_stop (EV_P_ ev_prepare *w)
		2128	{
		2129	clear_pending (EV_A_ (W)w);
		2130	if (expect_false (!ev_is_active (w)))
		2131	return;
		2132
		2133	{
		2134	int active = ((W)w)->active;
		2135	prepares [active - 1] = prepares [--preparecnt];
		2136	((W)prepares [active - 1])->active = active;
		2137	}
		2138
		2139	ev_stop (EV_A_ (W)w);
		2140	}
		2141
		2142	void
		2143	ev_check_start (EV_P_ ev_check *w)
		2144	{
		2145	if (expect_false (ev_is_active (w)))
		2146	return;
		2147
		2148	ev_start (EV_A_ (W)w, ++checkcnt);
		2149	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2150	checks [checkcnt - 1] = w;
		2151	}
		2152
		2153	void
		2154	ev_check_stop (EV_P_ ev_check *w)
		2155	{
		2156	clear_pending (EV_A_ (W)w);
		2157	if (expect_false (!ev_is_active (w)))
		2158	return;
		2159
		2160	{
		2161	int active = ((W)w)->active;
		2162	checks [active - 1] = checks [--checkcnt];
		2163	((W)checks [active - 1])->active = active;
		2164	}
		2165
		2166	ev_stop (EV_A_ (W)w);
		2167	}
		2168
		2169	#if EV_EMBED_ENABLE
		2170	void noinline
		2171	ev_embed_sweep (EV_P_ ev_embed *w)
		2172	{
		2173	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2174	}
		2175
		2176	static void
		2177	embed_cb (EV_P_ ev_io *io, int revents)
		2178	{
		2179	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2180
		2181	if (ev_cb (w))
		2182	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2183	else
		2184	ev_embed_sweep (loop, w);
		2185	}
		2186
		2187	void
		2188	ev_embed_start (EV_P_ ev_embed *w)
		2189	{
		2190	if (expect_false (ev_is_active (w)))
		2191	return;
		2192
		2193	{
		2194	struct ev_loop *loop = w->loop;
		2195	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2196	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2197	}
		2198
		2199	ev_set_priority (&w->io, ev_priority (w));
		2200	ev_io_start (EV_A_ &w->io);
		2201
		2202	ev_start (EV_A_ (W)w, 1);
		2203	}
		2204
		2205	void
		2206	ev_embed_stop (EV_P_ ev_embed *w)
		2207	{
		2208	clear_pending (EV_A_ (W)w);
		2209	if (expect_false (!ev_is_active (w)))
		2210	return;
		2211
		2212	ev_io_stop (EV_A_ &w->io);
		2213
		2214	ev_stop (EV_A_ (W)w);
		2215	}
		2216	#endif
		2217
		2218	#if EV_FORK_ENABLE
		2219	void
		2220	ev_fork_start (EV_P_ ev_fork *w)
		2221	{
		2222	if (expect_false (ev_is_active (w)))
		2223	return;
		2224
		2225	ev_start (EV_A_ (W)w, ++forkcnt);
		2226	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2227	forks [forkcnt - 1] = w;
		2228	}
		2229
		2230	void
		2231	ev_fork_stop (EV_P_ ev_fork *w)
		2232	{
		2233	clear_pending (EV_A_ (W)w);
		2234	if (expect_false (!ev_is_active (w)))
		2235	return;
		2236
		2237	{
		2238	int active = ((W)w)->active;
		2239	forks [active - 1] = forks [--forkcnt];
		2240	((W)forks [active - 1])->active = active;
		2241	}
		2242
		2243	ev_stop (EV_A_ (W)w);
		2244	}
		2245	#endif
		2246
1584	/*****************************************************************************/	2247	/*****************************************************************************/
1585		2248
1586	struct ev_once	2249	struct ev_once
1587	{	2250	{
1588	struct ev_io io;	2251	ev_io io;
1589	struct ev_timer to;	2252	ev_timer to;
1590	void (*cb)(int revents, void *arg);	2253	void (*cb)(int revents, void *arg);
1591	void *arg;	2254	void *arg;
1592	};	2255	};
1593		2256
1594	static void	2257	static void
…		…
1603		2266
1604	cb (revents, arg);	2267	cb (revents, arg);
1605	}	2268	}
1606		2269
1607	static void	2270	static void
1608	once_cb_io (EV_P_ struct ev_io *w, int revents)	2271	once_cb_io (EV_P_ ev_io *w, int revents)
1609	{	2272	{
1610	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2273	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1611	}	2274	}
1612		2275
1613	static void	2276	static void
1614	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2277	once_cb_to (EV_P_ ev_timer *w, int revents)
1615	{	2278	{
1616	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2279	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1617	}	2280	}
1618		2281
1619	void	2282	void
1620	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2283	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1621	{	2284	{
1622	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	2285	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1623		2286
1624	if (!once)	2287	if (expect_false (!once))
		2288	{
1625	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2289	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1626	else	2290	return;
1627	{	2291	}
		2292
1628	once->cb = cb;	2293	once->cb = cb;
1629	once->arg = arg;	2294	once->arg = arg;
1630		2295
1631	ev_init (&once->io, once_cb_io);	2296	ev_init (&once->io, once_cb_io);
1632	if (fd >= 0)	2297	if (fd >= 0)
1633	{	2298	{
1634	ev_io_set (&once->io, fd, events);	2299	ev_io_set (&once->io, fd, events);
1635	ev_io_start (EV_A_ &once->io);	2300	ev_io_start (EV_A_ &once->io);
1636	}	2301	}
1637		2302
1638	ev_init (&once->to, once_cb_to);	2303	ev_init (&once->to, once_cb_to);
1639	if (timeout >= 0.)	2304	if (timeout >= 0.)
1640	{	2305	{
1641	ev_timer_set (&once->to, timeout, 0.);	2306	ev_timer_set (&once->to, timeout, 0.);
1642	ev_timer_start (EV_A_ &once->to);	2307	ev_timer_start (EV_A_ &once->to);
1643	}
1644	}	2308	}
1645	}	2309	}
1646		2310
1647	#ifdef __cplusplus	2311	#ifdef __cplusplus
1648	}	2312	}

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