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Comparing libev/ev.c (file contents):
Revision 1.93 by root, Sun Nov 11 01:07:35 2007 UTC vs.
Revision 1.187 by root, Sun Dec 16 21:54:28 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
		44	# ifndef EV_USE_MONOTONIC
40	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
41	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
		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
42	# endif	57	# endif
43		58
		59	# ifndef EV_USE_SELECT
44	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
45	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
46	# endif	65	# endif
47		66
		67	# ifndef EV_USE_POLL
48	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
49	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
50	# endif	73	# endif
51		74
		75	# ifndef EV_USE_EPOLL
52	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
53	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
54	# endif	81	# endif
55		82
		83	# ifndef EV_USE_KQUEUE
56	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
57	# 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
58	# endif	105	# endif
59		106
60	#endif	107	#endif
61		108
62	#include <math.h>	109	#include <math.h>
…		…
71	#include <sys/types.h>	118	#include <sys/types.h>
72	#include <time.h>	119	#include <time.h>
73		120
74	#include <signal.h>	121	#include <signal.h>
75		122
76	#ifndef WIN32
77	# include <unistd.h>
78	# include <sys/time.h>
79	# include <sys/wait.h>
80	#endif
81	/**/
82
83	#ifndef EV_USE_MONOTONIC
84	# define EV_USE_MONOTONIC 1
85	#endif
86
87	#ifndef EV_USE_SELECT
88	# define EV_USE_SELECT 1
89	#endif
90
91	#ifndef EV_USE_POLL
92	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
93	#endif
94
95	#ifndef EV_USE_EPOLL
96	# define EV_USE_EPOLL 0
97	#endif
98
99	#ifndef EV_USE_KQUEUE
100	# define EV_USE_KQUEUE 0
101	#endif
102
103	#ifndef EV_USE_WIN32
104	# ifdef WIN32
105	# define EV_USE_WIN32 0 /* it does not exist, use select */
106	# undef EV_USE_SELECT
107	# define EV_USE_SELECT 1
108	# else
109	# define EV_USE_WIN32 0
110	# endif
111	#endif
112
113	#ifndef EV_USE_REALTIME
114	# define EV_USE_REALTIME 1
115	#endif
116
117	/**/
118
119	#ifndef CLOCK_MONOTONIC
120	# undef EV_USE_MONOTONIC
121	# define EV_USE_MONOTONIC 0
122	#endif
123
124	#ifndef CLOCK_REALTIME
125	# undef EV_USE_REALTIME
126	# define EV_USE_REALTIME 0
127	#endif
128
129	/**/
130
131	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
132	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
133	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
134	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
135
136	#ifdef EV_H	123	#ifdef EV_H
137	# include EV_H	124	# include EV_H
138	#else	125	#else
139	# include "ev.h"	126	# include "ev.h"
140	#endif	127	#endif
141		128
		129	#ifndef _WIN32
		130	# include <sys/time.h>
		131	# include <sys/wait.h>
		132	# include <unistd.h>
		133	#else
		134	# define WIN32_LEAN_AND_MEAN
		135	# include <windows.h>
		136	# ifndef EV_SELECT_IS_WINSOCKET
		137	# define EV_SELECT_IS_WINSOCKET 1
		138	# endif
		139	#endif
		140
		141	/**/
		142
		143	#ifndef EV_USE_MONOTONIC
		144	# define EV_USE_MONOTONIC 0
		145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
		149	#endif
		150
		151	#ifndef EV_USE_SELECT
		152	# define EV_USE_SELECT 1
		153	#endif
		154
		155	#ifndef EV_USE_POLL
		156	# ifdef _WIN32
		157	# define EV_USE_POLL 0
		158	# else
		159	# define EV_USE_POLL 1
		160	# endif
		161	#endif
		162
		163	#ifndef EV_USE_EPOLL
		164	# define EV_USE_EPOLL 0
		165	#endif
		166
		167	#ifndef EV_USE_KQUEUE
		168	# define EV_USE_KQUEUE 0
		169	#endif
		170
		171	#ifndef EV_USE_PORT
		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
		193	#endif
		194
		195	/**/
		196
		197	#ifndef CLOCK_MONOTONIC
		198	# undef EV_USE_MONOTONIC
		199	# define EV_USE_MONOTONIC 0
		200	#endif
		201
		202	#ifndef CLOCK_REALTIME
		203	# undef EV_USE_REALTIME
		204	# define EV_USE_REALTIME 0
		205	#endif
		206
		207	#if !EV_STAT_ENABLE
		208	# undef EV_USE_INOTIFY
		209	# define EV_USE_INOTIFY 0
		210	#endif
		211
		212	#if EV_USE_INOTIFY
		213	# include <sys/inotify.h>
		214	#endif
		215
		216	#if EV_SELECT_IS_WINSOCKET
		217	# include <winsock.h>
		218	#endif
		219
		220	/**/
		221
		222	/*
		223	* This is used to avoid floating point rounding problems.
		224	* It is added to ev_rt_now when scheduling periodics
		225	* to ensure progress, time-wise, even when rounding
		226	* errors are against us.
		227	* This value is good at least till the year 4000.
		228	* Better solutions welcome.
		229	*/
		230	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
		231
		232	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
		233	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
		234	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
		235
142	#if __GNUC__ >= 3	236	#if __GNUC__ >= 4
143	# define expect(expr,value) __builtin_expect ((expr),(value))	237	# define expect(expr,value) __builtin_expect ((expr),(value))
144	# define inline inline	238	# define noinline __attribute__ ((noinline))
145	#else	239	#else
146	# define expect(expr,value) (expr)	240	# define expect(expr,value) (expr)
147	# define inline static	241	# define noinline
		242	# if __STDC_VERSION__ < 199901L
		243	# define inline
		244	# endif
148	#endif	245	#endif
149		246
150	#define expect_false(expr) expect ((expr) != 0, 0)	247	#define expect_false(expr) expect ((expr) != 0, 0)
151	#define expect_true(expr) expect ((expr) != 0, 1)	248	#define expect_true(expr) expect ((expr) != 0, 1)
		249	#define inline_size static inline
		250
		251	#if EV_MINIMAL
		252	# define inline_speed static noinline
		253	#else
		254	# define inline_speed static inline
		255	#endif
152		256
153	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	257	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
154	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	258	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
155		259
		260	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		261	#define EMPTY2(a,b) /* used to suppress some warnings */
		262
156	typedef struct ev_watcher *W;	263	typedef ev_watcher *W;
157	typedef struct ev_watcher_list *WL;	264	typedef ev_watcher_list *WL;
158	typedef struct ev_watcher_time *WT;	265	typedef ev_watcher_time *WT;
159		266
160	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	267	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
161		268
		269	#ifdef _WIN32
162	#include "ev_win32.c"	270	# include "ev_win32.c"
		271	#endif
163		272
164	/*****************************************************************************/	273	/*****************************************************************************/
165		274
166	static void (*syserr_cb)(const char *msg);	275	static void (*syserr_cb)(const char *msg);
167		276
		277	void
168	void ev_set_syserr_cb (void (*cb)(const char *msg))	278	ev_set_syserr_cb (void (*cb)(const char *msg))
169	{	279	{
170	syserr_cb = cb;	280	syserr_cb = cb;
171	}	281	}
172		282
173	static void	283	static void noinline
174	syserr (const char *msg)	284	syserr (const char *msg)
175	{	285	{
176	if (!msg)	286	if (!msg)
177	msg = "(libev) system error";	287	msg = "(libev) system error";
178		288
…		…
185	}	295	}
186	}	296	}
187		297
188	static void *(*alloc)(void *ptr, long size);	298	static void *(*alloc)(void *ptr, long size);
189		299
		300	void
190	void ev_set_allocator (void *(*cb)(void *ptr, long size))	301	ev_set_allocator (void *(*cb)(void *ptr, long size))
191	{	302	{
192	alloc = cb;	303	alloc = cb;
193	}	304	}
194		305
195	static void *	306	inline_speed void *
196	ev_realloc (void *ptr, long size)	307	ev_realloc (void *ptr, long size)
197	{	308	{
198	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	309	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
199		310
200	if (!ptr && size)	311	if (!ptr && size)
…		…
214	typedef struct	325	typedef struct
215	{	326	{
216	WL head;	327	WL head;
217	unsigned char events;	328	unsigned char events;
218	unsigned char reify;	329	unsigned char reify;
		330	#if EV_SELECT_IS_WINSOCKET
		331	SOCKET handle;
		332	#endif
219	} ANFD;	333	} ANFD;
220		334
221	typedef struct	335	typedef struct
222	{	336	{
223	W w;	337	W w;
224	int events;	338	int events;
225	} ANPENDING;	339	} ANPENDING;
226		340
		341	#if EV_USE_INOTIFY
		342	typedef struct
		343	{
		344	WL head;
		345	} ANFS;
		346	#endif
		347
227	#if EV_MULTIPLICITY	348	#if EV_MULTIPLICITY
228		349
229	struct ev_loop	350	struct ev_loop
230	{	351	{
231	ev_tstamp ev_rt_now;	352	ev_tstamp ev_rt_now;
		353	#define ev_rt_now ((loop)->ev_rt_now)
232	#define VAR(name,decl) decl;	354	#define VAR(name,decl) decl;
233	#include "ev_vars.h"	355	#include "ev_vars.h"
234	#undef VAR	356	#undef VAR
235	};	357	};
236	#include "ev_wrap.h"	358	#include "ev_wrap.h"
237		359
238	struct ev_loop default_loop_struct;	360	static struct ev_loop default_loop_struct;
239	static struct ev_loop *default_loop;	361	struct ev_loop *ev_default_loop_ptr;
240		362
241	#else	363	#else
242		364
243	ev_tstamp ev_rt_now;	365	ev_tstamp ev_rt_now;
244	#define VAR(name,decl) static decl;	366	#define VAR(name,decl) static decl;
245	#include "ev_vars.h"	367	#include "ev_vars.h"
246	#undef VAR	368	#undef VAR
247		369
248	static int default_loop;	370	static int ev_default_loop_ptr;
249		371
250	#endif	372	#endif
251		373
252	/*****************************************************************************/	374	/*****************************************************************************/
253		375
…		…
263	gettimeofday (&tv, 0);	385	gettimeofday (&tv, 0);
264	return tv.tv_sec + tv.tv_usec * 1e-6;	386	return tv.tv_sec + tv.tv_usec * 1e-6;
265	#endif	387	#endif
266	}	388	}
267		389
268	inline ev_tstamp	390	ev_tstamp inline_size
269	get_clock (void)	391	get_clock (void)
270	{	392	{
271	#if EV_USE_MONOTONIC	393	#if EV_USE_MONOTONIC
272	if (expect_true (have_monotonic))	394	if (expect_true (have_monotonic))
273	{	395	{
…		…
286	{	408	{
287	return ev_rt_now;	409	return ev_rt_now;
288	}	410	}
289	#endif	411	#endif
290		412
291	#define array_roundsize(type,n) ((n) | 4 & ~3)	413	int inline_size
		414	array_nextsize (int elem, int cur, int cnt)
		415	{
		416	int ncur = cur + 1;
		417
		418	do
		419	ncur <<= 1;
		420	while (cnt > ncur);
		421
		422	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		423	if (elem * ncur > 4096)
		424	{
		425	ncur *= elem;
		426	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		427	ncur = ncur - sizeof (void *) * 4;
		428	ncur /= elem;
		429	}
		430
		431	return ncur;
		432	}
		433
		434	static noinline void *
		435	array_realloc (int elem, void *base, int *cur, int cnt)
		436	{
		437	*cur = array_nextsize (elem, *cur, cnt);
		438	return ev_realloc (base, elem * *cur);
		439	}
292		440
293	#define array_needsize(type,base,cur,cnt,init) \	441	#define array_needsize(type,base,cur,cnt,init) \
294	if (expect_false ((cnt) > cur)) \	442	if (expect_false ((cnt) > (cur))) \
295	{ \	443	{ \
296	int newcnt = cur; \	444	int ocur_ = (cur); \
297	do \	445	(base) = (type *)array_realloc \
298	{ \	446	(sizeof (type), (base), &(cur), (cnt)); \
299	newcnt = array_roundsize (type, newcnt << 1); \	447	init ((base) + (ocur_), (cur) - ocur_); \
300	} \
301	while ((cnt) > newcnt); \
302	\
303	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
304	init (base + cur, newcnt - cur); \
305	cur = newcnt; \
306	}	448	}
307		449
		450	#if 0
308	#define array_slim(type,stem) \	451	#define array_slim(type,stem) \
309	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	452	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
310	{ \	453	{ \
311	stem ## max = array_roundsize (stem ## cnt >> 1); \	454	stem ## max = array_roundsize (stem ## cnt >> 1); \
312	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	455	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
313	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	456	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
314	}	457	}
315		458	#endif
316	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
317	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
318	#define array_free_microshit(stem) \
319	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
320		459
321	#define array_free(stem, idx) \	460	#define array_free(stem, idx) \
322	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	461	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
323		462
324	/*****************************************************************************/	463	/*****************************************************************************/
325		464
326	static void	465	void noinline
		466	ev_feed_event (EV_P_ void *w, int revents)
		467	{
		468	W w_ = (W)w;
		469	int pri = ABSPRI (w_);
		470
		471	if (expect_false (w_->pending))
		472	pendings [pri][w_->pending - 1].events |= revents;
		473	else
		474	{
		475	w_->pending = ++pendingcnt [pri];
		476	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		477	pendings [pri][w_->pending - 1].w = w_;
		478	pendings [pri][w_->pending - 1].events = revents;
		479	}
		480	}
		481
		482	void inline_speed
		483	queue_events (EV_P_ W *events, int eventcnt, int type)
		484	{
		485	int i;
		486
		487	for (i = 0; i < eventcnt; ++i)
		488	ev_feed_event (EV_A_ events [i], type);
		489	}
		490
		491	/*****************************************************************************/
		492
		493	void inline_size
327	anfds_init (ANFD *base, int count)	494	anfds_init (ANFD *base, int count)
328	{	495	{
329	while (count--)	496	while (count--)
330	{	497	{
331	base->head = 0;	498	base->head = 0;
…		…
334		501
335	++base;	502	++base;
336	}	503	}
337	}	504	}
338		505
339	void	506	void inline_speed
340	ev_feed_event (EV_P_ void *w, int revents)
341	{
342	W w_ = (W)w;
343
344	if (w_->pending)
345	{
346	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
347	return;
348	}
349
350	w_->pending = ++pendingcnt [ABSPRI (w_)];
351	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
352	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
353	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
354	}
355
356	static void
357	queue_events (EV_P_ W *events, int eventcnt, int type)
358	{
359	int i;
360
361	for (i = 0; i < eventcnt; ++i)
362	ev_feed_event (EV_A_ events [i], type);
363	}
364
365	inline void
366	fd_event (EV_P_ int fd, int revents)	507	fd_event (EV_P_ int fd, int revents)
367	{	508	{
368	ANFD *anfd = anfds + fd;	509	ANFD *anfd = anfds + fd;
369	struct ev_io *w;	510	ev_io *w;
370		511
371	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	512	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
372	{	513	{
373	int ev = w->events & revents;	514	int ev = w->events & revents;
374		515
375	if (ev)	516	if (ev)
376	ev_feed_event (EV_A_ (W)w, ev);	517	ev_feed_event (EV_A_ (W)w, ev);
…		…
378	}	519	}
379		520
380	void	521	void
381	ev_feed_fd_event (EV_P_ int fd, int revents)	522	ev_feed_fd_event (EV_P_ int fd, int revents)
382	{	523	{
		524	if (fd >= 0 && fd < anfdmax)
383	fd_event (EV_A_ fd, revents);	525	fd_event (EV_A_ fd, revents);
384	}	526	}
385		527
386	/*****************************************************************************/	528	void inline_size
387
388	static void
389	fd_reify (EV_P)	529	fd_reify (EV_P)
390	{	530	{
391	int i;	531	int i;
392		532
393	for (i = 0; i < fdchangecnt; ++i)	533	for (i = 0; i < fdchangecnt; ++i)
394	{	534	{
395	int fd = fdchanges [i];	535	int fd = fdchanges [i];
396	ANFD *anfd = anfds + fd;	536	ANFD *anfd = anfds + fd;
397	struct ev_io *w;	537	ev_io *w;
398		538
399	int events = 0;	539	unsigned char events = 0;
400		540
401	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	541	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
402	events |= w->events;	542	events |= (unsigned char)w->events;
403		543
		544	#if EV_SELECT_IS_WINSOCKET
		545	if (events)
		546	{
		547	unsigned long argp;
		548	anfd->handle = _get_osfhandle (fd);
		549	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		550	}
		551	#endif
		552
		553	{
		554	unsigned char o_events = anfd->events;
		555	unsigned char o_reify = anfd->reify;
		556
404	anfd->reify = 0;	557	anfd->reify = 0;
405
406	method_modify (EV_A_ fd, anfd->events, events);
407	anfd->events = events;	558	anfd->events = events;
		559
		560	if (o_events != events || o_reify & EV_IOFDSET)
		561	backend_modify (EV_A_ fd, o_events, events);
		562	}
408	}	563	}
409		564
410	fdchangecnt = 0;	565	fdchangecnt = 0;
411	}	566	}
412		567
413	static void	568	void inline_size
414	fd_change (EV_P_ int fd)	569	fd_change (EV_P_ int fd, int flags)
415	{	570	{
416	if (anfds [fd].reify)	571	unsigned char reify = anfds [fd].reify;
417	return;
418
419	anfds [fd].reify = 1;	572	anfds [fd].reify |= flags;
420		573
		574	if (expect_true (!reify))
		575	{
421	++fdchangecnt;	576	++fdchangecnt;
422	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	577	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
423	fdchanges [fdchangecnt - 1] = fd;	578	fdchanges [fdchangecnt - 1] = fd;
		579	}
424	}	580	}
425		581
426	static void	582	void inline_speed
427	fd_kill (EV_P_ int fd)	583	fd_kill (EV_P_ int fd)
428	{	584	{
429	struct ev_io *w;	585	ev_io *w;
430		586
431	while ((w = (struct ev_io *)anfds [fd].head))	587	while ((w = (ev_io *)anfds [fd].head))
432	{	588	{
433	ev_io_stop (EV_A_ w);	589	ev_io_stop (EV_A_ w);
434	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	590	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
435	}	591	}
436	}	592	}
437		593
438	static int	594	int inline_size
439	fd_valid (int fd)	595	fd_valid (int fd)
440	{	596	{
441	#ifdef WIN32	597	#ifdef _WIN32
442	return !!win32_get_osfhandle (fd);	598	return _get_osfhandle (fd) != -1;
443	#else	599	#else
444	return fcntl (fd, F_GETFD) != -1;	600	return fcntl (fd, F_GETFD) != -1;
445	#endif	601	#endif
446	}	602	}
447		603
448	/* called on EBADF to verify fds */	604	/* called on EBADF to verify fds */
449	static void	605	static void noinline
450	fd_ebadf (EV_P)	606	fd_ebadf (EV_P)
451	{	607	{
452	int fd;	608	int fd;
453		609
454	for (fd = 0; fd < anfdmax; ++fd)	610	for (fd = 0; fd < anfdmax; ++fd)
…		…
456	if (!fd_valid (fd) == -1 && errno == EBADF)	612	if (!fd_valid (fd) == -1 && errno == EBADF)
457	fd_kill (EV_A_ fd);	613	fd_kill (EV_A_ fd);
458	}	614	}
459		615
460	/* called on ENOMEM in select/poll to kill some fds and retry */	616	/* called on ENOMEM in select/poll to kill some fds and retry */
461	static void	617	static void noinline
462	fd_enomem (EV_P)	618	fd_enomem (EV_P)
463	{	619	{
464	int fd;	620	int fd;
465		621
466	for (fd = anfdmax; fd--; )	622	for (fd = anfdmax; fd--; )
…		…
469	fd_kill (EV_A_ fd);	625	fd_kill (EV_A_ fd);
470	return;	626	return;
471	}	627	}
472	}	628	}
473		629
474	/* usually called after fork if method needs to re-arm all fds from scratch */	630	/* usually called after fork if backend needs to re-arm all fds from scratch */
475	static void	631	static void noinline
476	fd_rearm_all (EV_P)	632	fd_rearm_all (EV_P)
477	{	633	{
478	int fd;	634	int fd;
479		635
480	/* this should be highly optimised to not do anything but set a flag */
481	for (fd = 0; fd < anfdmax; ++fd)	636	for (fd = 0; fd < anfdmax; ++fd)
482	if (anfds [fd].events)	637	if (anfds [fd].events)
483	{	638	{
484	anfds [fd].events = 0;	639	anfds [fd].events = 0;
485	fd_change (EV_A_ fd);	640	fd_change (EV_A_ fd, EV_IOFDSET | 1);
486	}	641	}
487	}	642	}
488		643
489	/*****************************************************************************/	644	/*****************************************************************************/
490		645
491	static void	646	void inline_speed
492	upheap (WT *heap, int k)	647	upheap (WT *heap, int k)
493	{	648	{
494	WT w = heap [k];	649	WT w = heap [k];
495		650
496	while (k && heap [k >> 1]->at > w->at)	651	while (k)
497	{	652	{
		653	int p = (k - 1) >> 1;
		654
		655	if (heap [p]->at <= w->at)
		656	break;
		657
498	heap [k] = heap [k >> 1];	658	heap [k] = heap [p];
499	((W)heap [k])->active = k + 1;	659	((W)heap [k])->active = k + 1;
500	k >>= 1;	660	k = p;
501	}	661	}
502		662
503	heap [k] = w;	663	heap [k] = w;
504	((W)heap [k])->active = k + 1;	664	((W)heap [k])->active = k + 1;
505
506	}	665	}
507		666
508	static void	667	void inline_speed
509	downheap (WT *heap, int N, int k)	668	downheap (WT *heap, int N, int k)
510	{	669	{
511	WT w = heap [k];	670	WT w = heap [k];
512		671
513	while (k < (N >> 1))	672	for (;;)
514	{	673	{
515	int j = k << 1;	674	int c = (k << 1) + 1;
516		675
517	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	676	if (c >= N)
518	++j;
519
520	if (w->at <= heap [j]->at)
521	break;	677	break;
522		678
		679	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		680	? 1 : 0;
		681
		682	if (w->at <= heap [c]->at)
		683	break;
		684
523	heap [k] = heap [j];	685	heap [k] = heap [c];
524	((W)heap [k])->active = k + 1;	686	((W)heap [k])->active = k + 1;
		687
525	k = j;	688	k = c;
526	}	689	}
527		690
528	heap [k] = w;	691	heap [k] = w;
529	((W)heap [k])->active = k + 1;	692	((W)heap [k])->active = k + 1;
530	}	693	}
531		694
532	inline void	695	void inline_size
533	adjustheap (WT *heap, int N, int k, ev_tstamp at)	696	adjustheap (WT *heap, int N, int k)
534	{	697	{
535	ev_tstamp old_at = heap [k]->at;	698	upheap (heap, k);
536	heap [k]->at = at;
537
538	if (old_at < at)
539	downheap (heap, N, k);	699	downheap (heap, N, k);
540	else
541	upheap (heap, k);
542	}	700	}
543		701
544	/*****************************************************************************/	702	/*****************************************************************************/
545		703
546	typedef struct	704	typedef struct
…		…
552	static ANSIG *signals;	710	static ANSIG *signals;
553	static int signalmax;	711	static int signalmax;
554		712
555	static int sigpipe [2];	713	static int sigpipe [2];
556	static sig_atomic_t volatile gotsig;	714	static sig_atomic_t volatile gotsig;
557	static struct ev_io sigev;	715	static ev_io sigev;
558		716
559	static void	717	void inline_size
560	signals_init (ANSIG *base, int count)	718	signals_init (ANSIG *base, int count)
561	{	719	{
562	while (count--)	720	while (count--)
563	{	721	{
564	base->head = 0;	722	base->head = 0;
…		…
569	}	727	}
570		728
571	static void	729	static void
572	sighandler (int signum)	730	sighandler (int signum)
573	{	731	{
574	#if WIN32	732	#if _WIN32
575	signal (signum, sighandler);	733	signal (signum, sighandler);
576	#endif	734	#endif
577		735
578	signals [signum - 1].gotsig = 1;	736	signals [signum - 1].gotsig = 1;
579		737
580	if (!gotsig)	738	if (!gotsig)
581	{	739	{
582	int old_errno = errno;	740	int old_errno = errno;
583	gotsig = 1;	741	gotsig = 1;
584	#ifdef WIN32
585	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
586	#else
587	write (sigpipe [1], &signum, 1);	742	write (sigpipe [1], &signum, 1);
588	#endif
589	errno = old_errno;	743	errno = old_errno;
590	}	744	}
591	}	745	}
592		746
593	void	747	void noinline
594	ev_feed_signal_event (EV_P_ int signum)	748	ev_feed_signal_event (EV_P_ int signum)
595	{	749	{
596	WL w;	750	WL w;
597		751
598	#if EV_MULTIPLICITY	752	#if EV_MULTIPLICITY
599	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	753	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
600	#endif	754	#endif
601		755
602	--signum;	756	--signum;
603		757
604	if (signum < 0 || signum >= signalmax)	758	if (signum < 0 || signum >= signalmax)
…		…
609	for (w = signals [signum].head; w; w = w->next)	763	for (w = signals [signum].head; w; w = w->next)
610	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	764	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
611	}	765	}
612		766
613	static void	767	static void
614	sigcb (EV_P_ struct ev_io *iow, int revents)	768	sigcb (EV_P_ ev_io *iow, int revents)
615	{	769	{
616	int signum;	770	int signum;
617		771
618	#ifdef WIN32
619	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
620	#else
621	read (sigpipe [0], &revents, 1);	772	read (sigpipe [0], &revents, 1);
622	#endif
623	gotsig = 0;	773	gotsig = 0;
624		774
625	for (signum = signalmax; signum--; )	775	for (signum = signalmax; signum--; )
626	if (signals [signum].gotsig)	776	if (signals [signum].gotsig)
627	ev_feed_signal_event (EV_A_ signum + 1);	777	ev_feed_signal_event (EV_A_ signum + 1);
628	}	778	}
629		779
630	static void	780	void inline_speed
		781	fd_intern (int fd)
		782	{
		783	#ifdef _WIN32
		784	int arg = 1;
		785	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		786	#else
		787	fcntl (fd, F_SETFD, FD_CLOEXEC);
		788	fcntl (fd, F_SETFL, O_NONBLOCK);
		789	#endif
		790	}
		791
		792	static void noinline
631	siginit (EV_P)	793	siginit (EV_P)
632	{	794	{
633	#ifndef WIN32	795	fd_intern (sigpipe [0]);
634	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	796	fd_intern (sigpipe [1]);
635	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
636
637	/* rather than sort out wether we really need nb, set it */
638	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
639	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
640	#endif
641		797
642	ev_io_set (&sigev, sigpipe [0], EV_READ);	798	ev_io_set (&sigev, sigpipe [0], EV_READ);
643	ev_io_start (EV_A_ &sigev);	799	ev_io_start (EV_A_ &sigev);
644	ev_unref (EV_A); /* child watcher should not keep loop alive */	800	ev_unref (EV_A); /* child watcher should not keep loop alive */
645	}	801	}
646		802
647	/*****************************************************************************/	803	/*****************************************************************************/
648		804
649	static struct ev_child *childs [PID_HASHSIZE];	805	static WL childs [EV_PID_HASHSIZE];
650		806
651	#ifndef WIN32	807	#ifndef _WIN32
652		808
653	static struct ev_signal childev;	809	static ev_signal childev;
		810
		811	void inline_speed
		812	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		813	{
		814	ev_child *w;
		815
		816	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		817	if (w->pid == pid || !w->pid)
		818	{
		819	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		820	w->rpid = pid;
		821	w->rstatus = status;
		822	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		823	}
		824	}
654		825
655	#ifndef WCONTINUED	826	#ifndef WCONTINUED
656	# define WCONTINUED 0	827	# define WCONTINUED 0
657	#endif	828	#endif
658		829
659	static void	830	static void
660	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
661	{
662	struct ev_child *w;
663
664	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
665	if (w->pid == pid || !w->pid)
666	{
667	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
668	w->rpid = pid;
669	w->rstatus = status;
670	ev_feed_event (EV_A_ (W)w, EV_CHILD);
671	}
672	}
673
674	static void
675	childcb (EV_P_ struct ev_signal *sw, int revents)	831	childcb (EV_P_ ev_signal *sw, int revents)
676	{	832	{
677	int pid, status;	833	int pid, status;
678		834
		835	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
679	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	836	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
680	{	837	if (!WCONTINUED
		838	|| errno != EINVAL
		839	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		840	return;
		841
681	/* make sure we are called again until all childs have been reaped */	842	/* make sure we are called again until all childs have been reaped */
		843	/* we need to do it this way so that the callback gets called before we continue */
682	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	844	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
683		845
684	child_reap (EV_A_ sw, pid, pid, status);	846	child_reap (EV_A_ sw, pid, pid, status);
		847	if (EV_PID_HASHSIZE > 1)
685	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	848	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
686	}
687	}	849	}
688		850
689	#endif	851	#endif
690		852
691	/*****************************************************************************/	853	/*****************************************************************************/
692		854
		855	#if EV_USE_PORT
		856	# include "ev_port.c"
		857	#endif
693	#if EV_USE_KQUEUE	858	#if EV_USE_KQUEUE
694	# include "ev_kqueue.c"	859	# include "ev_kqueue.c"
695	#endif	860	#endif
696	#if EV_USE_EPOLL	861	#if EV_USE_EPOLL
697	# include "ev_epoll.c"	862	# include "ev_epoll.c"
…		…
714	{	879	{
715	return EV_VERSION_MINOR;	880	return EV_VERSION_MINOR;
716	}	881	}
717		882
718	/* return true if we are running with elevated privileges and should ignore env variables */	883	/* return true if we are running with elevated privileges and should ignore env variables */
719	static int	884	int inline_size
720	enable_secure (void)	885	enable_secure (void)
721	{	886	{
722	#ifdef WIN32	887	#ifdef _WIN32
723	return 0;	888	return 0;
724	#else	889	#else
725	return getuid () != geteuid ()	890	return getuid () != geteuid ()
726	|| getgid () != getegid ();	891	|| getgid () != getegid ();
727	#endif	892	#endif
728	}	893	}
729		894
730	int	895	unsigned int
731	ev_method (EV_P)	896	ev_supported_backends (void)
732	{	897	{
733	return method;	898	unsigned int flags = 0;
734	}
735		899
736	static void	900	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
737	loop_init (EV_P_ int methods)	901	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		902	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		903	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		904	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		905
		906	return flags;
		907	}
		908
		909	unsigned int
		910	ev_recommended_backends (void)
738	{	911	{
739	if (!method)	912	unsigned int flags = ev_supported_backends ();
		913
		914	#ifndef __NetBSD__
		915	/* kqueue is borked on everything but netbsd apparently */
		916	/* it usually doesn't work correctly on anything but sockets and pipes */
		917	flags &= ~EVBACKEND_KQUEUE;
		918	#endif
		919	#ifdef __APPLE__
		920	// flags &= ~EVBACKEND_KQUEUE; for documentation
		921	flags &= ~EVBACKEND_POLL;
		922	#endif
		923
		924	return flags;
		925	}
		926
		927	unsigned int
		928	ev_embeddable_backends (void)
		929	{
		930	return EVBACKEND_EPOLL
		931	| EVBACKEND_KQUEUE
		932	| EVBACKEND_PORT;
		933	}
		934
		935	unsigned int
		936	ev_backend (EV_P)
		937	{
		938	return backend;
		939	}
		940
		941	unsigned int
		942	ev_loop_count (EV_P)
		943	{
		944	return loop_count;
		945	}
		946
		947	static void noinline
		948	loop_init (EV_P_ unsigned int flags)
		949	{
		950	if (!backend)
740	{	951	{
741	#if EV_USE_MONOTONIC	952	#if EV_USE_MONOTONIC
742	{	953	{
743	struct timespec ts;	954	struct timespec ts;
744	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	955	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
749	ev_rt_now = ev_time ();	960	ev_rt_now = ev_time ();
750	mn_now = get_clock ();	961	mn_now = get_clock ();
751	now_floor = mn_now;	962	now_floor = mn_now;
752	rtmn_diff = ev_rt_now - mn_now;	963	rtmn_diff = ev_rt_now - mn_now;
753		964
754	if (methods == EVMETHOD_AUTO)	965	/* pid check not overridable via env */
755	if (!enable_secure () && getenv ("LIBEV_METHODS"))	966	#ifndef _WIN32
		967	if (flags & EVFLAG_FORKCHECK)
		968	curpid = getpid ();
		969	#endif
		970
		971	if (!(flags & EVFLAG_NOENV)
		972	&& !enable_secure ()
		973	&& getenv ("LIBEV_FLAGS"))
756	methods = atoi (getenv ("LIBEV_METHODS"));	974	flags = atoi (getenv ("LIBEV_FLAGS"));
757	else
758	methods = EVMETHOD_ANY;
759		975
760	method = 0;	976	if (!(flags & 0x0000ffffUL))
		977	flags |= ev_recommended_backends ();
		978
		979	backend = 0;
		980	backend_fd = -1;
761	#if EV_USE_WIN32	981	#if EV_USE_INOTIFY
762	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	982	fs_fd = -2;
		983	#endif
		984
		985	#if EV_USE_PORT
		986	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
763	#endif	987	#endif
764	#if EV_USE_KQUEUE	988	#if EV_USE_KQUEUE
765	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	989	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
766	#endif	990	#endif
767	#if EV_USE_EPOLL	991	#if EV_USE_EPOLL
768	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	992	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
769	#endif	993	#endif
770	#if EV_USE_POLL	994	#if EV_USE_POLL
771	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	995	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
772	#endif	996	#endif
773	#if EV_USE_SELECT	997	#if EV_USE_SELECT
774	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	998	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
775	#endif	999	#endif
776		1000
777	ev_init (&sigev, sigcb);	1001	ev_init (&sigev, sigcb);
778	ev_set_priority (&sigev, EV_MAXPRI);	1002	ev_set_priority (&sigev, EV_MAXPRI);
779	}	1003	}
780	}	1004	}
781		1005
782	void	1006	static void noinline
783	loop_destroy (EV_P)	1007	loop_destroy (EV_P)
784	{	1008	{
785	int i;	1009	int i;
786		1010
787	#if EV_USE_WIN32	1011	#if EV_USE_INOTIFY
788	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	1012	if (fs_fd >= 0)
		1013	close (fs_fd);
		1014	#endif
		1015
		1016	if (backend_fd >= 0)
		1017	close (backend_fd);
		1018
		1019	#if EV_USE_PORT
		1020	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
789	#endif	1021	#endif
790	#if EV_USE_KQUEUE	1022	#if EV_USE_KQUEUE
791	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1023	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
792	#endif	1024	#endif
793	#if EV_USE_EPOLL	1025	#if EV_USE_EPOLL
794	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1026	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
795	#endif	1027	#endif
796	#if EV_USE_POLL	1028	#if EV_USE_POLL
797	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1029	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
798	#endif	1030	#endif
799	#if EV_USE_SELECT	1031	#if EV_USE_SELECT
800	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1032	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
801	#endif	1033	#endif
802		1034
803	for (i = NUMPRI; i--; )	1035	for (i = NUMPRI; i--; )
		1036	{
804	array_free (pending, [i]);	1037	array_free (pending, [i]);
		1038	#if EV_IDLE_ENABLE
		1039	array_free (idle, [i]);
		1040	#endif
		1041	}
		1042
		1043	ev_free (anfds); anfdmax = 0;
805		1044
806	/* have to use the microsoft-never-gets-it-right macro */	1045	/* have to use the microsoft-never-gets-it-right macro */
807	array_free_microshit (fdchange);	1046	array_free (fdchange, EMPTY);
808	array_free_microshit (timer);	1047	array_free (timer, EMPTY);
809	#if EV_PERIODICS	1048	#if EV_PERIODIC_ENABLE
810	array_free_microshit (periodic);	1049	array_free (periodic, EMPTY);
811	#endif	1050	#endif
812	array_free_microshit (idle);	1051	#if EV_FORK_ENABLE
813	array_free_microshit (prepare);	1052	array_free (fork, EMPTY);
814	array_free_microshit (check);	1053	#endif
		1054	array_free (prepare, EMPTY);
		1055	array_free (check, EMPTY);
815		1056
816	method = 0;	1057	backend = 0;
817	}	1058	}
818		1059
819	static void	1060	void inline_size infy_fork (EV_P);
		1061
		1062	void inline_size
820	loop_fork (EV_P)	1063	loop_fork (EV_P)
821	{	1064	{
		1065	#if EV_USE_PORT
		1066	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1067	#endif
		1068	#if EV_USE_KQUEUE
		1069	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1070	#endif
822	#if EV_USE_EPOLL	1071	#if EV_USE_EPOLL
823	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1072	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
824	#endif	1073	#endif
825	#if EV_USE_KQUEUE	1074	#if EV_USE_INOTIFY
826	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1075	infy_fork (EV_A);
827	#endif	1076	#endif
828		1077
829	if (ev_is_active (&sigev))	1078	if (ev_is_active (&sigev))
830	{	1079	{
831	/* default loop */	1080	/* default loop */
…		…
844	postfork = 0;	1093	postfork = 0;
845	}	1094	}
846		1095
847	#if EV_MULTIPLICITY	1096	#if EV_MULTIPLICITY
848	struct ev_loop *	1097	struct ev_loop *
849	ev_loop_new (int methods)	1098	ev_loop_new (unsigned int flags)
850	{	1099	{
851	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1100	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
852		1101
853	memset (loop, 0, sizeof (struct ev_loop));	1102	memset (loop, 0, sizeof (struct ev_loop));
854		1103
855	loop_init (EV_A_ methods);	1104	loop_init (EV_A_ flags);
856		1105
857	if (ev_method (EV_A))	1106	if (ev_backend (EV_A))
858	return loop;	1107	return loop;
859		1108
860	return 0;	1109	return 0;
861	}	1110	}
862		1111
…		…
875		1124
876	#endif	1125	#endif
877		1126
878	#if EV_MULTIPLICITY	1127	#if EV_MULTIPLICITY
879	struct ev_loop *	1128	struct ev_loop *
		1129	ev_default_loop_init (unsigned int flags)
880	#else	1130	#else
881	int	1131	int
		1132	ev_default_loop (unsigned int flags)
882	#endif	1133	#endif
883	ev_default_loop (int methods)
884	{	1134	{
885	if (sigpipe [0] == sigpipe [1])	1135	if (sigpipe [0] == sigpipe [1])
886	if (pipe (sigpipe))	1136	if (pipe (sigpipe))
887	return 0;	1137	return 0;
888		1138
889	if (!default_loop)	1139	if (!ev_default_loop_ptr)
890	{	1140	{
891	#if EV_MULTIPLICITY	1141	#if EV_MULTIPLICITY
892	struct ev_loop *loop = default_loop = &default_loop_struct;	1142	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
893	#else	1143	#else
894	default_loop = 1;	1144	ev_default_loop_ptr = 1;
895	#endif	1145	#endif
896		1146
897	loop_init (EV_A_ methods);	1147	loop_init (EV_A_ flags);
898		1148
899	if (ev_method (EV_A))	1149	if (ev_backend (EV_A))
900	{	1150	{
901	siginit (EV_A);	1151	siginit (EV_A);
902		1152
903	#ifndef WIN32	1153	#ifndef _WIN32
904	ev_signal_init (&childev, childcb, SIGCHLD);	1154	ev_signal_init (&childev, childcb, SIGCHLD);
905	ev_set_priority (&childev, EV_MAXPRI);	1155	ev_set_priority (&childev, EV_MAXPRI);
906	ev_signal_start (EV_A_ &childev);	1156	ev_signal_start (EV_A_ &childev);
907	ev_unref (EV_A); /* child watcher should not keep loop alive */	1157	ev_unref (EV_A); /* child watcher should not keep loop alive */
908	#endif	1158	#endif
909	}	1159	}
910	else	1160	else
911	default_loop = 0;	1161	ev_default_loop_ptr = 0;
912	}	1162	}
913		1163
914	return default_loop;	1164	return ev_default_loop_ptr;
915	}	1165	}
916		1166
917	void	1167	void
918	ev_default_destroy (void)	1168	ev_default_destroy (void)
919	{	1169	{
920	#if EV_MULTIPLICITY	1170	#if EV_MULTIPLICITY
921	struct ev_loop *loop = default_loop;	1171	struct ev_loop *loop = ev_default_loop_ptr;
922	#endif	1172	#endif
923		1173
924	#ifndef WIN32	1174	#ifndef _WIN32
925	ev_ref (EV_A); /* child watcher */	1175	ev_ref (EV_A); /* child watcher */
926	ev_signal_stop (EV_A_ &childev);	1176	ev_signal_stop (EV_A_ &childev);
927	#endif	1177	#endif
928		1178
929	ev_ref (EV_A); /* signal watcher */	1179	ev_ref (EV_A); /* signal watcher */
…		…
937		1187
938	void	1188	void
939	ev_default_fork (void)	1189	ev_default_fork (void)
940	{	1190	{
941	#if EV_MULTIPLICITY	1191	#if EV_MULTIPLICITY
942	struct ev_loop *loop = default_loop;	1192	struct ev_loop *loop = ev_default_loop_ptr;
943	#endif	1193	#endif
944		1194
945	if (method)	1195	if (backend)
946	postfork = 1;	1196	postfork = 1;
947	}	1197	}
948		1198
949	/*****************************************************************************/	1199	/*****************************************************************************/
950		1200
951	static int	1201	void
952	any_pending (EV_P)	1202	ev_invoke (EV_P_ void *w, int revents)
953	{	1203	{
954	int pri;	1204	EV_CB_INVOKE ((W)w, revents);
955
956	for (pri = NUMPRI; pri--; )
957	if (pendingcnt [pri])
958	return 1;
959
960	return 0;
961	}	1205	}
962		1206
963	static void	1207	void inline_speed
964	call_pending (EV_P)	1208	call_pending (EV_P)
965	{	1209	{
966	int pri;	1210	int pri;
967		1211
968	for (pri = NUMPRI; pri--; )	1212	for (pri = NUMPRI; pri--; )
969	while (pendingcnt [pri])	1213	while (pendingcnt [pri])
970	{	1214	{
971	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1215	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
972		1216
973	if (p->w)	1217	if (expect_true (p->w))
974	{	1218	{
		1219	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1220
975	p->w->pending = 0;	1221	p->w->pending = 0;
976	EV_CB_INVOKE (p->w, p->events);	1222	EV_CB_INVOKE (p->w, p->events);
977	}	1223	}
978	}	1224	}
979	}	1225	}
980		1226
981	static void	1227	void inline_size
982	timers_reify (EV_P)	1228	timers_reify (EV_P)
983	{	1229	{
984	while (timercnt && ((WT)timers [0])->at <= mn_now)	1230	while (timercnt && ((WT)timers [0])->at <= mn_now)
985	{	1231	{
986	struct ev_timer *w = timers [0];	1232	ev_timer *w = (ev_timer *)timers [0];
987		1233
988	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1234	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
989		1235
990	/* first reschedule or stop timer */	1236	/* first reschedule or stop timer */
991	if (w->repeat)	1237	if (w->repeat)
992	{	1238	{
993	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1239	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
994		1240
995	((WT)w)->at += w->repeat;	1241	((WT)w)->at += w->repeat;
996	if (((WT)w)->at < mn_now)	1242	if (((WT)w)->at < mn_now)
997	((WT)w)->at = mn_now;	1243	((WT)w)->at = mn_now;
998		1244
999	downheap ((WT *)timers, timercnt, 0);	1245	downheap (timers, timercnt, 0);
1000	}	1246	}
1001	else	1247	else
1002	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1248	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1003		1249
1004	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1250	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1005	}	1251	}
1006	}	1252	}
1007		1253
1008	#if EV_PERIODICS	1254	#if EV_PERIODIC_ENABLE
1009	static void	1255	void inline_size
1010	periodics_reify (EV_P)	1256	periodics_reify (EV_P)
1011	{	1257	{
1012	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1258	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1013	{	1259	{
1014	struct ev_periodic *w = periodics [0];	1260	ev_periodic *w = (ev_periodic *)periodics [0];
1015		1261
1016	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1262	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1017		1263
1018	/* first reschedule or stop timer */	1264	/* first reschedule or stop timer */
1019	if (w->reschedule_cb)	1265	if (w->reschedule_cb)
1020	{	1266	{
1021	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1267	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1022
1023	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1268	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1024	downheap ((WT *)periodics, periodiccnt, 0);	1269	downheap (periodics, periodiccnt, 0);
1025	}	1270	}
1026	else if (w->interval)	1271	else if (w->interval)
1027	{	1272	{
1028	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1273	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1274	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1029	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1275	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1030	downheap ((WT *)periodics, periodiccnt, 0);	1276	downheap (periodics, periodiccnt, 0);
1031	}	1277	}
1032	else	1278	else
1033	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1279	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1034		1280
1035	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1281	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1036	}	1282	}
1037	}	1283	}
1038		1284
1039	static void	1285	static void noinline
1040	periodics_reschedule (EV_P)	1286	periodics_reschedule (EV_P)
1041	{	1287	{
1042	int i;	1288	int i;
1043		1289
1044	/* adjust periodics after time jump */	1290	/* adjust periodics after time jump */
1045	for (i = 0; i < periodiccnt; ++i)	1291	for (i = 0; i < periodiccnt; ++i)
1046	{	1292	{
1047	struct ev_periodic *w = periodics [i];	1293	ev_periodic *w = (ev_periodic *)periodics [i];
1048		1294
1049	if (w->reschedule_cb)	1295	if (w->reschedule_cb)
1050	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1296	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1051	else if (w->interval)	1297	else if (w->interval)
1052	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1298	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1053	}	1299	}
1054		1300
1055	/* now rebuild the heap */	1301	/* now rebuild the heap */
1056	for (i = periodiccnt >> 1; i--; )	1302	for (i = periodiccnt >> 1; i--; )
1057	downheap ((WT *)periodics, periodiccnt, i);	1303	downheap (periodics, periodiccnt, i);
1058	}	1304	}
1059	#endif	1305	#endif
1060		1306
1061	inline int	1307	#if EV_IDLE_ENABLE
1062	time_update_monotonic (EV_P)	1308	void inline_size
		1309	idle_reify (EV_P)
1063	{	1310	{
		1311	if (expect_false (idleall))
		1312	{
		1313	int pri;
		1314
		1315	for (pri = NUMPRI; pri--; )
		1316	{
		1317	if (pendingcnt [pri])
		1318	break;
		1319
		1320	if (idlecnt [pri])
		1321	{
		1322	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1323	break;
		1324	}
		1325	}
		1326	}
		1327	}
		1328	#endif
		1329
		1330	void inline_speed
		1331	time_update (EV_P_ ev_tstamp max_block)
		1332	{
		1333	int i;
		1334
		1335	#if EV_USE_MONOTONIC
		1336	if (expect_true (have_monotonic))
		1337	{
		1338	ev_tstamp odiff = rtmn_diff;
		1339
1064	mn_now = get_clock ();	1340	mn_now = get_clock ();
1065		1341
		1342	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1343	/* interpolate in the meantime */
1066	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1344	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1067	{	1345	{
1068	ev_rt_now = rtmn_diff + mn_now;	1346	ev_rt_now = rtmn_diff + mn_now;
1069	return 0;	1347	return;
1070	}	1348	}
1071	else	1349
1072	{
1073	now_floor = mn_now;	1350	now_floor = mn_now;
1074	ev_rt_now = ev_time ();	1351	ev_rt_now = ev_time ();
1075	return 1;
1076	}
1077	}
1078		1352
1079	static void	1353	/* loop a few times, before making important decisions.
1080	time_update (EV_P)	1354	* on the choice of "4": one iteration isn't enough,
1081	{	1355	* in case we get preempted during the calls to
1082	int i;	1356	* ev_time and get_clock. a second call is almost guaranteed
1083		1357	* to succeed in that case, though. and looping a few more times
1084	#if EV_USE_MONOTONIC	1358	* doesn't hurt either as we only do this on time-jumps or
1085	if (expect_true (have_monotonic))	1359	* in the unlikely event of having been preempted here.
1086	{	1360	*/
1087	if (time_update_monotonic (EV_A))	1361	for (i = 4; --i; )
1088	{	1362	{
1089	ev_tstamp odiff = rtmn_diff;
1090
1091	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1092	{
1093	rtmn_diff = ev_rt_now - mn_now;	1363	rtmn_diff = ev_rt_now - mn_now;
1094		1364
1095	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1365	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1096	return; /* all is well */	1366	return; /* all is well */
1097		1367
1098	ev_rt_now = ev_time ();	1368	ev_rt_now = ev_time ();
1099	mn_now = get_clock ();	1369	mn_now = get_clock ();
1100	now_floor = mn_now;	1370	now_floor = mn_now;
1101	}	1371	}
1102		1372
1103	# if EV_PERIODICS	1373	# if EV_PERIODIC_ENABLE
		1374	periodics_reschedule (EV_A);
		1375	# endif
		1376	/* no timer adjustment, as the monotonic clock doesn't jump */
		1377	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1378	}
		1379	else
		1380	#endif
		1381	{
		1382	ev_rt_now = ev_time ();
		1383
		1384	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1385	{
		1386	#if EV_PERIODIC_ENABLE
1104	periodics_reschedule (EV_A);	1387	periodics_reschedule (EV_A);
1105	# endif	1388	#endif
1106	/* no timer adjustment, as the monotonic clock doesn't jump */
1107	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1108	}
1109	}
1110	else
1111	#endif
1112	{
1113	ev_rt_now = ev_time ();
1114
1115	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1116	{
1117	#if EV_PERIODICS
1118	periodics_reschedule (EV_A);
1119	#endif
1120
1121	/* adjust timers. this is easy, as the offset is the same for all */	1389	/* adjust timers. this is easy, as the offset is the same for all of them */
1122	for (i = 0; i < timercnt; ++i)	1390	for (i = 0; i < timercnt; ++i)
1123	((WT)timers [i])->at += ev_rt_now - mn_now;	1391	((WT)timers [i])->at += ev_rt_now - mn_now;
1124	}	1392	}
1125		1393
1126	mn_now = ev_rt_now;	1394	mn_now = ev_rt_now;
…		…
1142	static int loop_done;	1410	static int loop_done;
1143		1411
1144	void	1412	void
1145	ev_loop (EV_P_ int flags)	1413	ev_loop (EV_P_ int flags)
1146	{	1414	{
1147	double block;
1148	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1415	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1416	? EVUNLOOP_ONE
		1417	: EVUNLOOP_CANCEL;
		1418
		1419	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1149		1420
1150	do	1421	do
1151	{	1422	{
		1423	#ifndef _WIN32
		1424	if (expect_false (curpid)) /* penalise the forking check even more */
		1425	if (expect_false (getpid () != curpid))
		1426	{
		1427	curpid = getpid ();
		1428	postfork = 1;
		1429	}
		1430	#endif
		1431
		1432	#if EV_FORK_ENABLE
		1433	/* we might have forked, so queue fork handlers */
		1434	if (expect_false (postfork))
		1435	if (forkcnt)
		1436	{
		1437	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1438	call_pending (EV_A);
		1439	}
		1440	#endif
		1441
1152	/* queue check watchers (and execute them) */	1442	/* queue prepare watchers (and execute them) */
1153	if (expect_false (preparecnt))	1443	if (expect_false (preparecnt))
1154	{	1444	{
1155	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1445	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1156	call_pending (EV_A);	1446	call_pending (EV_A);
1157	}	1447	}
1158		1448
		1449	if (expect_false (!activecnt))
		1450	break;
		1451
1159	/* we might have forked, so reify kernel state if necessary */	1452	/* we might have forked, so reify kernel state if necessary */
1160	if (expect_false (postfork))	1453	if (expect_false (postfork))
1161	loop_fork (EV_A);	1454	loop_fork (EV_A);
1162		1455
1163	/* update fd-related kernel structures */	1456	/* update fd-related kernel structures */
1164	fd_reify (EV_A);	1457	fd_reify (EV_A);
1165		1458
1166	/* calculate blocking time */	1459	/* calculate blocking time */
		1460	{
		1461	ev_tstamp block;
1167		1462
1168	/* we only need this for !monotonic clock or timers, but as we basically	1463	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1169	always have timers, we just calculate it always */	1464	block = 0.; /* do not block at all */
1170	#if EV_USE_MONOTONIC
1171	if (expect_true (have_monotonic))
1172	time_update_monotonic (EV_A);
1173	else	1465	else
1174	#endif
1175	{	1466	{
1176	ev_rt_now = ev_time ();	1467	/* update time to cancel out callback processing overhead */
1177	mn_now = ev_rt_now;	1468	time_update (EV_A_ 1e100);
1178	}
1179		1469
1180	if (flags & EVLOOP_NONBLOCK || idlecnt)
1181	block = 0.;
1182	else
1183	{
1184	block = MAX_BLOCKTIME;	1470	block = MAX_BLOCKTIME;
1185		1471
1186	if (timercnt)	1472	if (timercnt)
1187	{	1473	{
1188	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1474	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1189	if (block > to) block = to;	1475	if (block > to) block = to;
1190	}	1476	}
1191		1477
1192	#if EV_PERIODICS	1478	#if EV_PERIODIC_ENABLE
1193	if (periodiccnt)	1479	if (periodiccnt)
1194	{	1480	{
1195	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1481	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1196	if (block > to) block = to;	1482	if (block > to) block = to;
1197	}	1483	}
1198	#endif	1484	#endif
1199		1485
1200	if (block < 0.) block = 0.;	1486	if (expect_false (block < 0.)) block = 0.;
1201	}	1487	}
1202		1488
		1489	++loop_count;
1203	method_poll (EV_A_ block);	1490	backend_poll (EV_A_ block);
1204		1491
1205	/* update ev_rt_now, do magic */	1492	/* update ev_rt_now, do magic */
1206	time_update (EV_A);	1493	time_update (EV_A_ block);
		1494	}
1207		1495
1208	/* queue pending timers and reschedule them */	1496	/* queue pending timers and reschedule them */
1209	timers_reify (EV_A); /* relative timers called last */	1497	timers_reify (EV_A); /* relative timers called last */
1210	#if EV_PERIODICS	1498	#if EV_PERIODIC_ENABLE
1211	periodics_reify (EV_A); /* absolute timers called first */	1499	periodics_reify (EV_A); /* absolute timers called first */
1212	#endif	1500	#endif
1213		1501
		1502	#if EV_IDLE_ENABLE
1214	/* queue idle watchers unless io or timers are pending */	1503	/* queue idle watchers unless other events are pending */
1215	if (idlecnt && !any_pending (EV_A))	1504	idle_reify (EV_A);
1216	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1505	#endif
1217		1506
1218	/* queue check watchers, to be executed first */	1507	/* queue check watchers, to be executed first */
1219	if (checkcnt)	1508	if (expect_false (checkcnt))
1220	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1509	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1221		1510
1222	call_pending (EV_A);	1511	call_pending (EV_A);
		1512
1223	}	1513	}
1224	while (activecnt && !loop_done);	1514	while (expect_true (activecnt && !loop_done));
1225		1515
1226	if (loop_done != 2)	1516	if (loop_done == EVUNLOOP_ONE)
1227	loop_done = 0;	1517	loop_done = EVUNLOOP_CANCEL;
1228	}	1518	}
1229		1519
1230	void	1520	void
1231	ev_unloop (EV_P_ int how)	1521	ev_unloop (EV_P_ int how)
1232	{	1522	{
1233	loop_done = how;	1523	loop_done = how;
1234	}	1524	}
1235		1525
1236	/*****************************************************************************/	1526	/*****************************************************************************/
1237		1527
1238	inline void	1528	void inline_size
1239	wlist_add (WL *head, WL elem)	1529	wlist_add (WL *head, WL elem)
1240	{	1530	{
1241	elem->next = *head;	1531	elem->next = *head;
1242	*head = elem;	1532	*head = elem;
1243	}	1533	}
1244		1534
1245	inline void	1535	void inline_size
1246	wlist_del (WL *head, WL elem)	1536	wlist_del (WL *head, WL elem)
1247	{	1537	{
1248	while (*head)	1538	while (*head)
1249	{	1539	{
1250	if (*head == elem)	1540	if (*head == elem)
…		…
1255		1545
1256	head = &(*head)->next;	1546	head = &(*head)->next;
1257	}	1547	}
1258	}	1548	}
1259		1549
1260	inline void	1550	void inline_speed
1261	ev_clear_pending (EV_P_ W w)	1551	clear_pending (EV_P_ W w)
1262	{	1552	{
1263	if (w->pending)	1553	if (w->pending)
1264	{	1554	{
1265	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1555	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1266	w->pending = 0;	1556	w->pending = 0;
1267	}	1557	}
1268	}	1558	}
1269		1559
1270	inline void	1560	int
		1561	ev_clear_pending (EV_P_ void *w)
		1562	{
		1563	W w_ = (W)w;
		1564	int pending = w_->pending;
		1565
		1566	if (expect_true (pending))
		1567	{
		1568	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1569	w_->pending = 0;
		1570	p->w = 0;
		1571	return p->events;
		1572	}
		1573	else
		1574	return 0;
		1575	}
		1576
		1577	void inline_size
		1578	pri_adjust (EV_P_ W w)
		1579	{
		1580	int pri = w->priority;
		1581	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1582	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1583	w->priority = pri;
		1584	}
		1585
		1586	void inline_speed
1271	ev_start (EV_P_ W w, int active)	1587	ev_start (EV_P_ W w, int active)
1272	{	1588	{
1273	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1589	pri_adjust (EV_A_ w);
1274	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1275
1276	w->active = active;	1590	w->active = active;
1277	ev_ref (EV_A);	1591	ev_ref (EV_A);
1278	}	1592	}
1279		1593
1280	inline void	1594	void inline_size
1281	ev_stop (EV_P_ W w)	1595	ev_stop (EV_P_ W w)
1282	{	1596	{
1283	ev_unref (EV_A);	1597	ev_unref (EV_A);
1284	w->active = 0;	1598	w->active = 0;
1285	}	1599	}
1286		1600
1287	/*****************************************************************************/	1601	/*****************************************************************************/
1288		1602
1289	void	1603	void noinline
1290	ev_io_start (EV_P_ struct ev_io *w)	1604	ev_io_start (EV_P_ ev_io *w)
1291	{	1605	{
1292	int fd = w->fd;	1606	int fd = w->fd;
1293		1607
1294	if (ev_is_active (w))	1608	if (expect_false (ev_is_active (w)))
1295	return;	1609	return;
1296		1610
1297	assert (("ev_io_start called with negative fd", fd >= 0));	1611	assert (("ev_io_start called with negative fd", fd >= 0));
1298		1612
1299	ev_start (EV_A_ (W)w, 1);	1613	ev_start (EV_A_ (W)w, 1);
1300	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1614	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1301	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1615	wlist_add (&anfds[fd].head, (WL)w);
1302		1616
1303	fd_change (EV_A_ fd);	1617	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1618	w->events &= ~EV_IOFDSET;
1304	}	1619	}
1305		1620
1306	void	1621	void noinline
1307	ev_io_stop (EV_P_ struct ev_io *w)	1622	ev_io_stop (EV_P_ ev_io *w)
1308	{	1623	{
1309	ev_clear_pending (EV_A_ (W)w);	1624	clear_pending (EV_A_ (W)w);
1310	if (!ev_is_active (w))	1625	if (expect_false (!ev_is_active (w)))
1311	return;	1626	return;
1312		1627
1313	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1628	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1314		1629
1315	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1630	wlist_del (&anfds[w->fd].head, (WL)w);
1316	ev_stop (EV_A_ (W)w);	1631	ev_stop (EV_A_ (W)w);
1317		1632
1318	fd_change (EV_A_ w->fd);	1633	fd_change (EV_A_ w->fd, 1);
1319	}	1634	}
1320		1635
1321	void	1636	void noinline
1322	ev_timer_start (EV_P_ struct ev_timer *w)	1637	ev_timer_start (EV_P_ ev_timer *w)
		1638	{
		1639	if (expect_false (ev_is_active (w)))
		1640	return;
		1641
		1642	((WT)w)->at += mn_now;
		1643
		1644	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
		1645
		1646	ev_start (EV_A_ (W)w, ++timercnt);
		1647	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
		1648	timers [timercnt - 1] = (WT)w;
		1649	upheap (timers, timercnt - 1);
		1650
		1651	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1652	}
		1653
		1654	void noinline
		1655	ev_timer_stop (EV_P_ ev_timer *w)
		1656	{
		1657	clear_pending (EV_A_ (W)w);
		1658	if (expect_false (!ev_is_active (w)))
		1659	return;
		1660
		1661	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
		1662
		1663	{
		1664	int active = ((W)w)->active;
		1665
		1666	if (expect_true (--active < --timercnt))
		1667	{
		1668	timers [active] = timers [timercnt];
		1669	adjustheap (timers, timercnt, active);
		1670	}
		1671	}
		1672
		1673	((WT)w)->at -= mn_now;
		1674
		1675	ev_stop (EV_A_ (W)w);
		1676	}
		1677
		1678	void noinline
		1679	ev_timer_again (EV_P_ ev_timer *w)
1323	{	1680	{
1324	if (ev_is_active (w))	1681	if (ev_is_active (w))
1325	return;
1326
1327	((WT)w)->at += mn_now;
1328
1329	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1330
1331	ev_start (EV_A_ (W)w, ++timercnt);
1332	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1333	timers [timercnt - 1] = w;
1334	upheap ((WT *)timers, timercnt - 1);
1335
1336	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1337	}
1338
1339	void
1340	ev_timer_stop (EV_P_ struct ev_timer *w)
1341	{
1342	ev_clear_pending (EV_A_ (W)w);
1343	if (!ev_is_active (w))
1344	return;
1345
1346	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1347
1348	if (((W)w)->active < timercnt--)
1349	{
1350	timers [((W)w)->active - 1] = timers [timercnt];
1351	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1352	}
1353
1354	((WT)w)->at -= mn_now;
1355
1356	ev_stop (EV_A_ (W)w);
1357	}
1358
1359	void
1360	ev_timer_again (EV_P_ struct ev_timer *w)
1361	{
1362	if (ev_is_active (w))
1363	{	1682	{
1364	if (w->repeat)	1683	if (w->repeat)
		1684	{
		1685	((WT)w)->at = mn_now + w->repeat;
1365	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1686	adjustheap (timers, timercnt, ((W)w)->active - 1);
		1687	}
1366	else	1688	else
1367	ev_timer_stop (EV_A_ w);	1689	ev_timer_stop (EV_A_ w);
1368	}	1690	}
1369	else if (w->repeat)	1691	else if (w->repeat)
		1692	{
		1693	w->at = w->repeat;
1370	ev_timer_start (EV_A_ w);	1694	ev_timer_start (EV_A_ w);
		1695	}
1371	}	1696	}
1372		1697
1373	#if EV_PERIODICS	1698	#if EV_PERIODIC_ENABLE
1374	void	1699	void noinline
1375	ev_periodic_start (EV_P_ struct ev_periodic *w)	1700	ev_periodic_start (EV_P_ ev_periodic *w)
1376	{	1701	{
1377	if (ev_is_active (w))	1702	if (expect_false (ev_is_active (w)))
1378	return;	1703	return;
1379		1704
1380	if (w->reschedule_cb)	1705	if (w->reschedule_cb)
1381	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1706	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1382	else if (w->interval)	1707	else if (w->interval)
1383	{	1708	{
1384	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1709	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1385	/* this formula differs from the one in periodic_reify because we do not always round up */	1710	/* this formula differs from the one in periodic_reify because we do not always round up */
1386	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1711	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1387	}	1712	}
		1713	else
		1714	((WT)w)->at = w->offset;
1388		1715
1389	ev_start (EV_A_ (W)w, ++periodiccnt);	1716	ev_start (EV_A_ (W)w, ++periodiccnt);
1390	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1717	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1391	periodics [periodiccnt - 1] = w;	1718	periodics [periodiccnt - 1] = (WT)w;
1392	upheap ((WT *)periodics, periodiccnt - 1);	1719	upheap (periodics, periodiccnt - 1);
1393		1720
1394	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1721	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1395	}	1722	}
1396		1723
1397	void	1724	void noinline
1398	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1725	ev_periodic_stop (EV_P_ ev_periodic *w)
1399	{	1726	{
1400	ev_clear_pending (EV_A_ (W)w);	1727	clear_pending (EV_A_ (W)w);
1401	if (!ev_is_active (w))	1728	if (expect_false (!ev_is_active (w)))
1402	return;	1729	return;
1403		1730
1404	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1731	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1405		1732
1406	if (((W)w)->active < periodiccnt--)	1733	{
		1734	int active = ((W)w)->active;
		1735
		1736	if (expect_true (--active < --periodiccnt))
1407	{	1737	{
1408	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1738	periodics [active] = periodics [periodiccnt];
1409	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1739	adjustheap (periodics, periodiccnt, active);
1410	}	1740	}
		1741	}
1411		1742
1412	ev_stop (EV_A_ (W)w);	1743	ev_stop (EV_A_ (W)w);
1413	}	1744	}
1414		1745
1415	void	1746	void noinline
1416	ev_periodic_again (EV_P_ struct ev_periodic *w)	1747	ev_periodic_again (EV_P_ ev_periodic *w)
1417	{	1748	{
1418	/* TODO: use adjustheap and recalculation */	1749	/* TODO: use adjustheap and recalculation */
1419	ev_periodic_stop (EV_A_ w);	1750	ev_periodic_stop (EV_A_ w);
1420	ev_periodic_start (EV_A_ w);	1751	ev_periodic_start (EV_A_ w);
1421	}	1752	}
1422	#endif	1753	#endif
1423		1754
1424	void
1425	ev_idle_start (EV_P_ struct ev_idle *w)
1426	{
1427	if (ev_is_active (w))
1428	return;
1429
1430	ev_start (EV_A_ (W)w, ++idlecnt);
1431	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1432	idles [idlecnt - 1] = w;
1433	}
1434
1435	void
1436	ev_idle_stop (EV_P_ struct ev_idle *w)
1437	{
1438	ev_clear_pending (EV_A_ (W)w);
1439	if (ev_is_active (w))
1440	return;
1441
1442	idles [((W)w)->active - 1] = idles [--idlecnt];
1443	ev_stop (EV_A_ (W)w);
1444	}
1445
1446	void
1447	ev_prepare_start (EV_P_ struct ev_prepare *w)
1448	{
1449	if (ev_is_active (w))
1450	return;
1451
1452	ev_start (EV_A_ (W)w, ++preparecnt);
1453	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1454	prepares [preparecnt - 1] = w;
1455	}
1456
1457	void
1458	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1459	{
1460	ev_clear_pending (EV_A_ (W)w);
1461	if (ev_is_active (w))
1462	return;
1463
1464	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1465	ev_stop (EV_A_ (W)w);
1466	}
1467
1468	void
1469	ev_check_start (EV_P_ struct ev_check *w)
1470	{
1471	if (ev_is_active (w))
1472	return;
1473
1474	ev_start (EV_A_ (W)w, ++checkcnt);
1475	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1476	checks [checkcnt - 1] = w;
1477	}
1478
1479	void
1480	ev_check_stop (EV_P_ struct ev_check *w)
1481	{
1482	ev_clear_pending (EV_A_ (W)w);
1483	if (ev_is_active (w))
1484	return;
1485
1486	checks [((W)w)->active - 1] = checks [--checkcnt];
1487	ev_stop (EV_A_ (W)w);
1488	}
1489
1490	#ifndef SA_RESTART	1755	#ifndef SA_RESTART
1491	# define SA_RESTART 0	1756	# define SA_RESTART 0
1492	#endif	1757	#endif
1493		1758
1494	void	1759	void noinline
1495	ev_signal_start (EV_P_ struct ev_signal *w)	1760	ev_signal_start (EV_P_ ev_signal *w)
1496	{	1761	{
1497	#if EV_MULTIPLICITY	1762	#if EV_MULTIPLICITY
1498	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1763	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1499	#endif	1764	#endif
1500	if (ev_is_active (w))	1765	if (expect_false (ev_is_active (w)))
1501	return;	1766	return;
1502		1767
1503	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1768	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1504		1769
		1770	{
		1771	#ifndef _WIN32
		1772	sigset_t full, prev;
		1773	sigfillset (&full);
		1774	sigprocmask (SIG_SETMASK, &full, &prev);
		1775	#endif
		1776
		1777	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1778
		1779	#ifndef _WIN32
		1780	sigprocmask (SIG_SETMASK, &prev, 0);
		1781	#endif
		1782	}
		1783
1505	ev_start (EV_A_ (W)w, 1);	1784	ev_start (EV_A_ (W)w, 1);
1506	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1507	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1785	wlist_add (&signals [w->signum - 1].head, (WL)w);
1508		1786
1509	if (!((WL)w)->next)	1787	if (!((WL)w)->next)
1510	{	1788	{
1511	#if WIN32	1789	#if _WIN32
1512	signal (w->signum, sighandler);	1790	signal (w->signum, sighandler);
1513	#else	1791	#else
1514	struct sigaction sa;	1792	struct sigaction sa;
1515	sa.sa_handler = sighandler;	1793	sa.sa_handler = sighandler;
1516	sigfillset (&sa.sa_mask);	1794	sigfillset (&sa.sa_mask);
…		…
1518	sigaction (w->signum, &sa, 0);	1796	sigaction (w->signum, &sa, 0);
1519	#endif	1797	#endif
1520	}	1798	}
1521	}	1799	}
1522		1800
1523	void	1801	void noinline
1524	ev_signal_stop (EV_P_ struct ev_signal *w)	1802	ev_signal_stop (EV_P_ ev_signal *w)
1525	{	1803	{
1526	ev_clear_pending (EV_A_ (W)w);	1804	clear_pending (EV_A_ (W)w);
1527	if (!ev_is_active (w))	1805	if (expect_false (!ev_is_active (w)))
1528	return;	1806	return;
1529		1807
1530	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1808	wlist_del (&signals [w->signum - 1].head, (WL)w);
1531	ev_stop (EV_A_ (W)w);	1809	ev_stop (EV_A_ (W)w);
1532		1810
1533	if (!signals [w->signum - 1].head)	1811	if (!signals [w->signum - 1].head)
1534	signal (w->signum, SIG_DFL);	1812	signal (w->signum, SIG_DFL);
1535	}	1813	}
1536		1814
1537	void	1815	void
1538	ev_child_start (EV_P_ struct ev_child *w)	1816	ev_child_start (EV_P_ ev_child *w)
1539	{	1817	{
1540	#if EV_MULTIPLICITY	1818	#if EV_MULTIPLICITY
1541	assert (("child watchers are only supported in the default loop", loop == default_loop));	1819	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1542	#endif	1820	#endif
1543	if (ev_is_active (w))	1821	if (expect_false (ev_is_active (w)))
1544	return;	1822	return;
1545		1823
1546	ev_start (EV_A_ (W)w, 1);	1824	ev_start (EV_A_ (W)w, 1);
1547	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1825	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1548	}	1826	}
1549		1827
1550	void	1828	void
1551	ev_child_stop (EV_P_ struct ev_child *w)	1829	ev_child_stop (EV_P_ ev_child *w)
1552	{	1830	{
1553	ev_clear_pending (EV_A_ (W)w);	1831	clear_pending (EV_A_ (W)w);
1554	if (ev_is_active (w))	1832	if (expect_false (!ev_is_active (w)))
1555	return;	1833	return;
1556		1834
1557	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1835	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1558	ev_stop (EV_A_ (W)w);	1836	ev_stop (EV_A_ (W)w);
1559	}	1837	}
1560		1838
		1839	#if EV_STAT_ENABLE
		1840
		1841	# ifdef _WIN32
		1842	# undef lstat
		1843	# define lstat(a,b) _stati64 (a,b)
		1844	# endif
		1845
		1846	#define DEF_STAT_INTERVAL 5.0074891
		1847	#define MIN_STAT_INTERVAL 0.1074891
		1848
		1849	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1850
		1851	#if EV_USE_INOTIFY
		1852	# define EV_INOTIFY_BUFSIZE 8192
		1853
		1854	static void noinline
		1855	infy_add (EV_P_ ev_stat *w)
		1856	{
		1857	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
		1858
		1859	if (w->wd < 0)
		1860	{
		1861	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1862
		1863	/* monitor some parent directory for speedup hints */
		1864	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1865	{
		1866	char path [4096];
		1867	strcpy (path, w->path);
		1868
		1869	do
		1870	{
		1871	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1872	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1873
		1874	char *pend = strrchr (path, '/');
		1875
		1876	if (!pend)
		1877	break; /* whoops, no '/', complain to your admin */
		1878
		1879	*pend = 0;
		1880	w->wd = inotify_add_watch (fs_fd, path, mask);
		1881	}
		1882	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1883	}
		1884	}
		1885	else
		1886	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1887
		1888	if (w->wd >= 0)
		1889	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1890	}
		1891
		1892	static void noinline
		1893	infy_del (EV_P_ ev_stat *w)
		1894	{
		1895	int slot;
		1896	int wd = w->wd;
		1897
		1898	if (wd < 0)
		1899	return;
		1900
		1901	w->wd = -2;
		1902	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1903	wlist_del (&fs_hash [slot].head, (WL)w);
		1904
		1905	/* remove this watcher, if others are watching it, they will rearm */
		1906	inotify_rm_watch (fs_fd, wd);
		1907	}
		1908
		1909	static void noinline
		1910	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1911	{
		1912	if (slot < 0)
		1913	/* overflow, need to check for all hahs slots */
		1914	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1915	infy_wd (EV_A_ slot, wd, ev);
		1916	else
		1917	{
		1918	WL w_;
		1919
		1920	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1921	{
		1922	ev_stat *w = (ev_stat *)w_;
		1923	w_ = w_->next; /* lets us remove this watcher and all before it */
		1924
		1925	if (w->wd == wd || wd == -1)
		1926	{
		1927	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1928	{
		1929	w->wd = -1;
		1930	infy_add (EV_A_ w); /* re-add, no matter what */
		1931	}
		1932
		1933	stat_timer_cb (EV_A_ &w->timer, 0);
		1934	}
		1935	}
		1936	}
		1937	}
		1938
		1939	static void
		1940	infy_cb (EV_P_ ev_io *w, int revents)
		1941	{
		1942	char buf [EV_INOTIFY_BUFSIZE];
		1943	struct inotify_event *ev = (struct inotify_event *)buf;
		1944	int ofs;
		1945	int len = read (fs_fd, buf, sizeof (buf));
		1946
		1947	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1948	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1949	}
		1950
		1951	void inline_size
		1952	infy_init (EV_P)
		1953	{
		1954	if (fs_fd != -2)
		1955	return;
		1956
		1957	fs_fd = inotify_init ();
		1958
		1959	if (fs_fd >= 0)
		1960	{
		1961	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1962	ev_set_priority (&fs_w, EV_MAXPRI);
		1963	ev_io_start (EV_A_ &fs_w);
		1964	}
		1965	}
		1966
		1967	void inline_size
		1968	infy_fork (EV_P)
		1969	{
		1970	int slot;
		1971
		1972	if (fs_fd < 0)
		1973	return;
		1974
		1975	close (fs_fd);
		1976	fs_fd = inotify_init ();
		1977
		1978	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1979	{
		1980	WL w_ = fs_hash [slot].head;
		1981	fs_hash [slot].head = 0;
		1982
		1983	while (w_)
		1984	{
		1985	ev_stat *w = (ev_stat *)w_;
		1986	w_ = w_->next; /* lets us add this watcher */
		1987
		1988	w->wd = -1;
		1989
		1990	if (fs_fd >= 0)
		1991	infy_add (EV_A_ w); /* re-add, no matter what */
		1992	else
		1993	ev_timer_start (EV_A_ &w->timer);
		1994	}
		1995
		1996	}
		1997	}
		1998
		1999	#endif
		2000
		2001	void
		2002	ev_stat_stat (EV_P_ ev_stat *w)
		2003	{
		2004	if (lstat (w->path, &w->attr) < 0)
		2005	w->attr.st_nlink = 0;
		2006	else if (!w->attr.st_nlink)
		2007	w->attr.st_nlink = 1;
		2008	}
		2009
		2010	static void noinline
		2011	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2012	{
		2013	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2014
		2015	/* we copy this here each the time so that */
		2016	/* prev has the old value when the callback gets invoked */
		2017	w->prev = w->attr;
		2018	ev_stat_stat (EV_A_ w);
		2019
		2020	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2021	if (
		2022	w->prev.st_dev != w->attr.st_dev
		2023	|| w->prev.st_ino != w->attr.st_ino
		2024	|| w->prev.st_mode != w->attr.st_mode
		2025	|| w->prev.st_nlink != w->attr.st_nlink
		2026	|| w->prev.st_uid != w->attr.st_uid
		2027	|| w->prev.st_gid != w->attr.st_gid
		2028	|| w->prev.st_rdev != w->attr.st_rdev
		2029	|| w->prev.st_size != w->attr.st_size
		2030	|| w->prev.st_atime != w->attr.st_atime
		2031	|| w->prev.st_mtime != w->attr.st_mtime
		2032	|| w->prev.st_ctime != w->attr.st_ctime
		2033	) {
		2034	#if EV_USE_INOTIFY
		2035	infy_del (EV_A_ w);
		2036	infy_add (EV_A_ w);
		2037	ev_stat_stat (EV_A_ w); /* avoid race... */
		2038	#endif
		2039
		2040	ev_feed_event (EV_A_ w, EV_STAT);
		2041	}
		2042	}
		2043
		2044	void
		2045	ev_stat_start (EV_P_ ev_stat *w)
		2046	{
		2047	if (expect_false (ev_is_active (w)))
		2048	return;
		2049
		2050	/* since we use memcmp, we need to clear any padding data etc. */
		2051	memset (&w->prev, 0, sizeof (ev_statdata));
		2052	memset (&w->attr, 0, sizeof (ev_statdata));
		2053
		2054	ev_stat_stat (EV_A_ w);
		2055
		2056	if (w->interval < MIN_STAT_INTERVAL)
		2057	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2058
		2059	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2060	ev_set_priority (&w->timer, ev_priority (w));
		2061
		2062	#if EV_USE_INOTIFY
		2063	infy_init (EV_A);
		2064
		2065	if (fs_fd >= 0)
		2066	infy_add (EV_A_ w);
		2067	else
		2068	#endif
		2069	ev_timer_start (EV_A_ &w->timer);
		2070
		2071	ev_start (EV_A_ (W)w, 1);
		2072	}
		2073
		2074	void
		2075	ev_stat_stop (EV_P_ ev_stat *w)
		2076	{
		2077	clear_pending (EV_A_ (W)w);
		2078	if (expect_false (!ev_is_active (w)))
		2079	return;
		2080
		2081	#if EV_USE_INOTIFY
		2082	infy_del (EV_A_ w);
		2083	#endif
		2084	ev_timer_stop (EV_A_ &w->timer);
		2085
		2086	ev_stop (EV_A_ (W)w);
		2087	}
		2088	#endif
		2089
		2090	#if EV_IDLE_ENABLE
		2091	void
		2092	ev_idle_start (EV_P_ ev_idle *w)
		2093	{
		2094	if (expect_false (ev_is_active (w)))
		2095	return;
		2096
		2097	pri_adjust (EV_A_ (W)w);
		2098
		2099	{
		2100	int active = ++idlecnt [ABSPRI (w)];
		2101
		2102	++idleall;
		2103	ev_start (EV_A_ (W)w, active);
		2104
		2105	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2106	idles [ABSPRI (w)][active - 1] = w;
		2107	}
		2108	}
		2109
		2110	void
		2111	ev_idle_stop (EV_P_ ev_idle *w)
		2112	{
		2113	clear_pending (EV_A_ (W)w);
		2114	if (expect_false (!ev_is_active (w)))
		2115	return;
		2116
		2117	{
		2118	int active = ((W)w)->active;
		2119
		2120	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2121	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2122
		2123	ev_stop (EV_A_ (W)w);
		2124	--idleall;
		2125	}
		2126	}
		2127	#endif
		2128
		2129	void
		2130	ev_prepare_start (EV_P_ ev_prepare *w)
		2131	{
		2132	if (expect_false (ev_is_active (w)))
		2133	return;
		2134
		2135	ev_start (EV_A_ (W)w, ++preparecnt);
		2136	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2137	prepares [preparecnt - 1] = w;
		2138	}
		2139
		2140	void
		2141	ev_prepare_stop (EV_P_ ev_prepare *w)
		2142	{
		2143	clear_pending (EV_A_ (W)w);
		2144	if (expect_false (!ev_is_active (w)))
		2145	return;
		2146
		2147	{
		2148	int active = ((W)w)->active;
		2149	prepares [active - 1] = prepares [--preparecnt];
		2150	((W)prepares [active - 1])->active = active;
		2151	}
		2152
		2153	ev_stop (EV_A_ (W)w);
		2154	}
		2155
		2156	void
		2157	ev_check_start (EV_P_ ev_check *w)
		2158	{
		2159	if (expect_false (ev_is_active (w)))
		2160	return;
		2161
		2162	ev_start (EV_A_ (W)w, ++checkcnt);
		2163	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2164	checks [checkcnt - 1] = w;
		2165	}
		2166
		2167	void
		2168	ev_check_stop (EV_P_ ev_check *w)
		2169	{
		2170	clear_pending (EV_A_ (W)w);
		2171	if (expect_false (!ev_is_active (w)))
		2172	return;
		2173
		2174	{
		2175	int active = ((W)w)->active;
		2176	checks [active - 1] = checks [--checkcnt];
		2177	((W)checks [active - 1])->active = active;
		2178	}
		2179
		2180	ev_stop (EV_A_ (W)w);
		2181	}
		2182
		2183	#if EV_EMBED_ENABLE
		2184	void noinline
		2185	ev_embed_sweep (EV_P_ ev_embed *w)
		2186	{
		2187	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2188	}
		2189
		2190	static void
		2191	embed_cb (EV_P_ ev_io *io, int revents)
		2192	{
		2193	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2194
		2195	if (ev_cb (w))
		2196	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2197	else
		2198	ev_embed_sweep (loop, w);
		2199	}
		2200
		2201	void
		2202	ev_embed_start (EV_P_ ev_embed *w)
		2203	{
		2204	if (expect_false (ev_is_active (w)))
		2205	return;
		2206
		2207	{
		2208	struct ev_loop *loop = w->loop;
		2209	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2210	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2211	}
		2212
		2213	ev_set_priority (&w->io, ev_priority (w));
		2214	ev_io_start (EV_A_ &w->io);
		2215
		2216	ev_start (EV_A_ (W)w, 1);
		2217	}
		2218
		2219	void
		2220	ev_embed_stop (EV_P_ ev_embed *w)
		2221	{
		2222	clear_pending (EV_A_ (W)w);
		2223	if (expect_false (!ev_is_active (w)))
		2224	return;
		2225
		2226	ev_io_stop (EV_A_ &w->io);
		2227
		2228	ev_stop (EV_A_ (W)w);
		2229	}
		2230	#endif
		2231
		2232	#if EV_FORK_ENABLE
		2233	void
		2234	ev_fork_start (EV_P_ ev_fork *w)
		2235	{
		2236	if (expect_false (ev_is_active (w)))
		2237	return;
		2238
		2239	ev_start (EV_A_ (W)w, ++forkcnt);
		2240	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2241	forks [forkcnt - 1] = w;
		2242	}
		2243
		2244	void
		2245	ev_fork_stop (EV_P_ ev_fork *w)
		2246	{
		2247	clear_pending (EV_A_ (W)w);
		2248	if (expect_false (!ev_is_active (w)))
		2249	return;
		2250
		2251	{
		2252	int active = ((W)w)->active;
		2253	forks [active - 1] = forks [--forkcnt];
		2254	((W)forks [active - 1])->active = active;
		2255	}
		2256
		2257	ev_stop (EV_A_ (W)w);
		2258	}
		2259	#endif
		2260
1561	/*****************************************************************************/	2261	/*****************************************************************************/
1562		2262
1563	struct ev_once	2263	struct ev_once
1564	{	2264	{
1565	struct ev_io io;	2265	ev_io io;
1566	struct ev_timer to;	2266	ev_timer to;
1567	void (*cb)(int revents, void *arg);	2267	void (*cb)(int revents, void *arg);
1568	void *arg;	2268	void *arg;
1569	};	2269	};
1570		2270
1571	static void	2271	static void
…		…
1580		2280
1581	cb (revents, arg);	2281	cb (revents, arg);
1582	}	2282	}
1583		2283
1584	static void	2284	static void
1585	once_cb_io (EV_P_ struct ev_io *w, int revents)	2285	once_cb_io (EV_P_ ev_io *w, int revents)
1586	{	2286	{
1587	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2287	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1588	}	2288	}
1589		2289
1590	static void	2290	static void
1591	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2291	once_cb_to (EV_P_ ev_timer *w, int revents)
1592	{	2292	{
1593	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2293	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1594	}	2294	}
1595		2295
1596	void	2296	void
1597	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2297	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1598	{	2298	{
1599	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	2299	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1600		2300
1601	if (!once)	2301	if (expect_false (!once))
		2302	{
1602	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2303	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1603	else	2304	return;
1604	{	2305	}
		2306
1605	once->cb = cb;	2307	once->cb = cb;
1606	once->arg = arg;	2308	once->arg = arg;
1607		2309
1608	ev_init (&once->io, once_cb_io);	2310	ev_init (&once->io, once_cb_io);
1609	if (fd >= 0)	2311	if (fd >= 0)
1610	{	2312	{
1611	ev_io_set (&once->io, fd, events);	2313	ev_io_set (&once->io, fd, events);
1612	ev_io_start (EV_A_ &once->io);	2314	ev_io_start (EV_A_ &once->io);
1613	}	2315	}
1614		2316
1615	ev_init (&once->to, once_cb_to);	2317	ev_init (&once->to, once_cb_to);
1616	if (timeout >= 0.)	2318	if (timeout >= 0.)
1617	{	2319	{
1618	ev_timer_set (&once->to, timeout, 0.);	2320	ev_timer_set (&once->to, timeout, 0.);
1619	ev_timer_start (EV_A_ &once->to);	2321	ev_timer_start (EV_A_ &once->to);
1620	}
1621	}	2322	}
1622	}	2323	}
1623		2324
1624	#ifdef __cplusplus	2325	#ifdef __cplusplus
1625	}	2326	}

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