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Comparing libev/ev.c (file contents):
Revision 1.98 by root, Sun Nov 11 02:05:20 2007 UTC vs.
Revision 1.184 by root, Wed Dec 12 05:30:52 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 && 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
80	#ifndef WIN32
81	# include <unistd.h>
82	# include <sys/time.h>
83	# include <sys/wait.h>
84	#endif
85	/**/
86
87	#ifndef EV_USE_MONOTONIC
88	# define EV_USE_MONOTONIC 1
89	#endif
90
91	#ifndef EV_USE_SELECT
92	# define EV_USE_SELECT 1
93	#endif
94
95	#ifndef EV_USE_POLL
96	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
97	#endif
98
99	#ifndef EV_USE_EPOLL
100	# define EV_USE_EPOLL 0
101	#endif
102
103	#ifndef EV_USE_KQUEUE
104	# define EV_USE_KQUEUE 0
105	#endif
106
107	#ifndef EV_USE_WIN32
108	# ifdef WIN32
109	# define EV_USE_WIN32 0 /* it does not exist, use select */
110	# undef EV_USE_SELECT
111	# define EV_USE_SELECT 1
112	# else
113	# define EV_USE_WIN32 0
114	# endif
115	#endif
116
117	#ifndef EV_USE_REALTIME
118	# define EV_USE_REALTIME 1
119	#endif
120
121	/**/
122
123	#ifndef CLOCK_MONOTONIC
124	# undef EV_USE_MONOTONIC
125	# define EV_USE_MONOTONIC 0
126	#endif
127
128	#ifndef CLOCK_REALTIME
129	# undef EV_USE_REALTIME
130	# define EV_USE_REALTIME 0
131	#endif
132
133	/**/
134
135	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
136	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
137	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
138	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
139
140	#ifdef EV_H	123	#ifdef EV_H
141	# include EV_H	124	# include EV_H
142	#else	125	#else
143	# include "ev.h"	126	# include "ev.h"
144	#endif	127	#endif
145		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_SELECT_IS_WINSOCKET
		208	# include <winsock.h>
		209	#endif
		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
		219	/**/
		220
		221	/*
		222	* This is used to avoid floating point rounding problems.
		223	* It is added to ev_rt_now when scheduling periodics
		224	* to ensure progress, time-wise, even when rounding
		225	* errors are against us.
		226	* This value is good at least till the year 4000.
		227	* Better solutions welcome.
		228	*/
		229	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
		230
		231	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
		232	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
		233	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
		234
146	#if __GNUC__ >= 3	235	#if __GNUC__ >= 3
147	# define expect(expr,value) __builtin_expect ((expr),(value))	236	# define expect(expr,value) __builtin_expect ((expr),(value))
148	# define inline inline	237	# define noinline __attribute__ ((noinline))
149	#else	238	#else
150	# define expect(expr,value) (expr)	239	# define expect(expr,value) (expr)
151	# define inline static	240	# define noinline
		241	# if __STDC_VERSION__ < 199901L
		242	# define inline
		243	# endif
152	#endif	244	#endif
153		245
154	#define expect_false(expr) expect ((expr) != 0, 0)	246	#define expect_false(expr) expect ((expr) != 0, 0)
155	#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
156		255
157	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	256	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
158	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	257	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
159		258
		259	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		260	#define EMPTY2(a,b) /* used to suppress some warnings */
		261
160	typedef struct ev_watcher *W;	262	typedef ev_watcher *W;
161	typedef struct ev_watcher_list *WL;	263	typedef ev_watcher_list *WL;
162	typedef struct ev_watcher_time *WT;	264	typedef ev_watcher_time *WT;
163		265
164	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	266	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
165		267
166	#ifdef WIN32	268	#ifdef _WIN32
167	# include "ev_win32.c"	269	# include "ev_win32.c"
168	#endif	270	#endif
169		271
170	/*****************************************************************************/	272	/*****************************************************************************/
171		273
172	static void (*syserr_cb)(const char *msg);	274	static void (*syserr_cb)(const char *msg);
173		275
		276	void
174	void ev_set_syserr_cb (void (*cb)(const char *msg))	277	ev_set_syserr_cb (void (*cb)(const char *msg))
175	{	278	{
176	syserr_cb = cb;	279	syserr_cb = cb;
177	}	280	}
178		281
179	static void	282	static void noinline
180	syserr (const char *msg)	283	syserr (const char *msg)
181	{	284	{
182	if (!msg)	285	if (!msg)
183	msg = "(libev) system error";	286	msg = "(libev) system error";
184		287
…		…
191	}	294	}
192	}	295	}
193		296
194	static void *(*alloc)(void *ptr, long size);	297	static void *(*alloc)(void *ptr, long size);
195		298
		299	void
196	void ev_set_allocator (void *(*cb)(void *ptr, long size))	300	ev_set_allocator (void *(*cb)(void *ptr, long size))
197	{	301	{
198	alloc = cb;	302	alloc = cb;
199	}	303	}
200		304
201	static void *	305	inline_speed void *
202	ev_realloc (void *ptr, long size)	306	ev_realloc (void *ptr, long size)
203	{	307	{
204	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
205		309
206	if (!ptr && size)	310	if (!ptr && size)
…		…
220	typedef struct	324	typedef struct
221	{	325	{
222	WL head;	326	WL head;
223	unsigned char events;	327	unsigned char events;
224	unsigned char reify;	328	unsigned char reify;
		329	#if EV_SELECT_IS_WINSOCKET
		330	SOCKET handle;
		331	#endif
225	} ANFD;	332	} ANFD;
226		333
227	typedef struct	334	typedef struct
228	{	335	{
229	W w;	336	W w;
230	int events;	337	int events;
231	} ANPENDING;	338	} ANPENDING;
232		339
		340	#if EV_USE_INOTIFY
		341	typedef struct
		342	{
		343	WL head;
		344	} ANFS;
		345	#endif
		346
233	#if EV_MULTIPLICITY	347	#if EV_MULTIPLICITY
234		348
235	struct ev_loop	349	struct ev_loop
236	{	350	{
237	ev_tstamp ev_rt_now;	351	ev_tstamp ev_rt_now;
		352	#define ev_rt_now ((loop)->ev_rt_now)
238	#define VAR(name,decl) decl;	353	#define VAR(name,decl) decl;
239	#include "ev_vars.h"	354	#include "ev_vars.h"
240	#undef VAR	355	#undef VAR
241	};	356	};
242	#include "ev_wrap.h"	357	#include "ev_wrap.h"
243		358
244	struct ev_loop default_loop_struct;	359	static struct ev_loop default_loop_struct;
245	static struct ev_loop *default_loop;	360	struct ev_loop *ev_default_loop_ptr;
246		361
247	#else	362	#else
248		363
249	ev_tstamp ev_rt_now;	364	ev_tstamp ev_rt_now;
250	#define VAR(name,decl) static decl;	365	#define VAR(name,decl) static decl;
251	#include "ev_vars.h"	366	#include "ev_vars.h"
252	#undef VAR	367	#undef VAR
253		368
254	static int default_loop;	369	static int ev_default_loop_ptr;
255		370
256	#endif	371	#endif
257		372
258	/*****************************************************************************/	373	/*****************************************************************************/
259		374
…		…
269	gettimeofday (&tv, 0);	384	gettimeofday (&tv, 0);
270	return tv.tv_sec + tv.tv_usec * 1e-6;	385	return tv.tv_sec + tv.tv_usec * 1e-6;
271	#endif	386	#endif
272	}	387	}
273		388
274	inline ev_tstamp	389	ev_tstamp inline_size
275	get_clock (void)	390	get_clock (void)
276	{	391	{
277	#if EV_USE_MONOTONIC	392	#if EV_USE_MONOTONIC
278	if (expect_true (have_monotonic))	393	if (expect_true (have_monotonic))
279	{	394	{
…		…
292	{	407	{
293	return ev_rt_now;	408	return ev_rt_now;
294	}	409	}
295	#endif	410	#endif
296		411
297	#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	}
298		439
299	#define array_needsize(type,base,cur,cnt,init) \	440	#define array_needsize(type,base,cur,cnt,init) \
300	if (expect_false ((cnt) > cur)) \	441	if (expect_false ((cnt) > (cur))) \
301	{ \	442	{ \
302	int newcnt = cur; \	443	int ocur_ = (cur); \
303	do \	444	(base) = (type *)array_realloc \
304	{ \	445	(sizeof (type), (base), &(cur), (cnt)); \
305	newcnt = array_roundsize (type, newcnt << 1); \	446	init ((base) + (ocur_), (cur) - ocur_); \
306	} \
307	while ((cnt) > newcnt); \
308	\
309	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
310	init (base + cur, newcnt - cur); \
311	cur = newcnt; \
312	}	447	}
313		448
		449	#if 0
314	#define array_slim(type,stem) \	450	#define array_slim(type,stem) \
315	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	451	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
316	{ \	452	{ \
317	stem ## max = array_roundsize (stem ## cnt >> 1); \	453	stem ## max = array_roundsize (stem ## cnt >> 1); \
318	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	454	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
319	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	455	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
320	}	456	}
321		457	#endif
322	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
323	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
324	#define array_free_microshit(stem) \
325	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
326		458
327	#define array_free(stem, idx) \	459	#define array_free(stem, idx) \
328	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;
329		461
330	/*****************************************************************************/	462	/*****************************************************************************/
331		463
332	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
333	anfds_init (ANFD *base, int count)	493	anfds_init (ANFD *base, int count)
334	{	494	{
335	while (count--)	495	while (count--)
336	{	496	{
337	base->head = 0;	497	base->head = 0;
…		…
340		500
341	++base;	501	++base;
342	}	502	}
343	}	503	}
344		504
345	void	505	void inline_speed
346	ev_feed_event (EV_P_ void *w, int revents)
347	{
348	W w_ = (W)w;
349
350	if (w_->pending)
351	{
352	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
353	return;
354	}
355
356	w_->pending = ++pendingcnt [ABSPRI (w_)];
357	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
358	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
359	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
360	}
361
362	static void
363	queue_events (EV_P_ W *events, int eventcnt, int type)
364	{
365	int i;
366
367	for (i = 0; i < eventcnt; ++i)
368	ev_feed_event (EV_A_ events [i], type);
369	}
370
371	inline void
372	fd_event (EV_P_ int fd, int revents)	506	fd_event (EV_P_ int fd, int revents)
373	{	507	{
374	ANFD *anfd = anfds + fd;	508	ANFD *anfd = anfds + fd;
375	struct ev_io *w;	509	ev_io *w;
376		510
377	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)
378	{	512	{
379	int ev = w->events & revents;	513	int ev = w->events & revents;
380		514
381	if (ev)	515	if (ev)
382	ev_feed_event (EV_A_ (W)w, ev);	516	ev_feed_event (EV_A_ (W)w, ev);
…		…
384	}	518	}
385		519
386	void	520	void
387	ev_feed_fd_event (EV_P_ int fd, int revents)	521	ev_feed_fd_event (EV_P_ int fd, int revents)
388	{	522	{
		523	if (fd >= 0 && fd < anfdmax)
389	fd_event (EV_A_ fd, revents);	524	fd_event (EV_A_ fd, revents);
390	}	525	}
391		526
392	/*****************************************************************************/	527	void inline_size
393
394	static void
395	fd_reify (EV_P)	528	fd_reify (EV_P)
396	{	529	{
397	int i;	530	int i;
398		531
399	for (i = 0; i < fdchangecnt; ++i)	532	for (i = 0; i < fdchangecnt; ++i)
400	{	533	{
401	int fd = fdchanges [i];	534	int fd = fdchanges [i];
402	ANFD *anfd = anfds + fd;	535	ANFD *anfd = anfds + fd;
403	struct ev_io *w;	536	ev_io *w;
404		537
405	int events = 0;	538	unsigned char events = 0;
406		539
407	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)
408	events |= w->events;	541	events |= (unsigned char)w->events;
409		542
		543	#if EV_SELECT_IS_WINSOCKET
		544	if (events)
		545	{
		546	unsigned long argp;
		547	anfd->handle = _get_osfhandle (fd);
		548	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		549	}
		550	#endif
		551
		552	{
		553	unsigned char o_events = anfd->events;
		554	unsigned char o_reify = anfd->reify;
		555
410	anfd->reify = 0;	556	anfd->reify = 0;
411
412	method_modify (EV_A_ fd, anfd->events, events);
413	anfd->events = events;	557	anfd->events = events;
		558
		559	if (o_events != events || o_reify & EV_IOFDSET)
		560	backend_modify (EV_A_ fd, o_events, events);
		561	}
414	}	562	}
415		563
416	fdchangecnt = 0;	564	fdchangecnt = 0;
417	}	565	}
418		566
419	static void	567	void inline_size
420	fd_change (EV_P_ int fd)	568	fd_change (EV_P_ int fd, int flags)
421	{	569	{
422	if (anfds [fd].reify)	570	unsigned char reify = anfds [fd].reify;
423	return;
424
425	anfds [fd].reify = 1;	571	anfds [fd].reify |= flags;
426		572
		573	if (expect_true (!reify))
		574	{
427	++fdchangecnt;	575	++fdchangecnt;
428	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	576	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
429	fdchanges [fdchangecnt - 1] = fd;	577	fdchanges [fdchangecnt - 1] = fd;
		578	}
430	}	579	}
431		580
432	static void	581	void inline_speed
433	fd_kill (EV_P_ int fd)	582	fd_kill (EV_P_ int fd)
434	{	583	{
435	struct ev_io *w;	584	ev_io *w;
436		585
437	while ((w = (struct ev_io *)anfds [fd].head))	586	while ((w = (ev_io *)anfds [fd].head))
438	{	587	{
439	ev_io_stop (EV_A_ w);	588	ev_io_stop (EV_A_ w);
440	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	589	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
441	}	590	}
442	}	591	}
443		592
444	static int	593	int inline_size
445	fd_valid (int fd)	594	fd_valid (int fd)
446	{	595	{
447	#ifdef WIN32	596	#ifdef _WIN32
448	return !!win32_get_osfhandle (fd);	597	return _get_osfhandle (fd) != -1;
449	#else	598	#else
450	return fcntl (fd, F_GETFD) != -1;	599	return fcntl (fd, F_GETFD) != -1;
451	#endif	600	#endif
452	}	601	}
453		602
454	/* called on EBADF to verify fds */	603	/* called on EBADF to verify fds */
455	static void	604	static void noinline
456	fd_ebadf (EV_P)	605	fd_ebadf (EV_P)
457	{	606	{
458	int fd;	607	int fd;
459		608
460	for (fd = 0; fd < anfdmax; ++fd)	609	for (fd = 0; fd < anfdmax; ++fd)
…		…
462	if (!fd_valid (fd) == -1 && errno == EBADF)	611	if (!fd_valid (fd) == -1 && errno == EBADF)
463	fd_kill (EV_A_ fd);	612	fd_kill (EV_A_ fd);
464	}	613	}
465		614
466	/* called on ENOMEM in select/poll to kill some fds and retry */	615	/* called on ENOMEM in select/poll to kill some fds and retry */
467	static void	616	static void noinline
468	fd_enomem (EV_P)	617	fd_enomem (EV_P)
469	{	618	{
470	int fd;	619	int fd;
471		620
472	for (fd = anfdmax; fd--; )	621	for (fd = anfdmax; fd--; )
…		…
475	fd_kill (EV_A_ fd);	624	fd_kill (EV_A_ fd);
476	return;	625	return;
477	}	626	}
478	}	627	}
479		628
480	/* usually called after fork if method needs to re-arm all fds from scratch */	629	/* usually called after fork if backend needs to re-arm all fds from scratch */
481	static void	630	static void noinline
482	fd_rearm_all (EV_P)	631	fd_rearm_all (EV_P)
483	{	632	{
484	int fd;	633	int fd;
485		634
486	/* this should be highly optimised to not do anything but set a flag */
487	for (fd = 0; fd < anfdmax; ++fd)	635	for (fd = 0; fd < anfdmax; ++fd)
488	if (anfds [fd].events)	636	if (anfds [fd].events)
489	{	637	{
490	anfds [fd].events = 0;	638	anfds [fd].events = 0;
491	fd_change (EV_A_ fd);	639	fd_change (EV_A_ fd, EV_IOFDSET | 1);
492	}	640	}
493	}	641	}
494		642
495	/*****************************************************************************/	643	/*****************************************************************************/
496		644
497	static void	645	void inline_speed
498	upheap (WT *heap, int k)	646	upheap (WT *heap, int k)
499	{	647	{
500	WT w = heap [k];	648	WT w = heap [k];
501		649
502	while (k && heap [k >> 1]->at > w->at)	650	while (k)
503	{	651	{
		652	int p = (k - 1) >> 1;
		653
		654	if (heap [p]->at <= w->at)
		655	break;
		656
504	heap [k] = heap [k >> 1];	657	heap [k] = heap [p];
505	((W)heap [k])->active = k + 1;	658	((W)heap [k])->active = k + 1;
506	k >>= 1;	659	k = p;
507	}	660	}
508		661
509	heap [k] = w;	662	heap [k] = w;
510	((W)heap [k])->active = k + 1;	663	((W)heap [k])->active = k + 1;
511
512	}	664	}
513		665
514	static void	666	void inline_speed
515	downheap (WT *heap, int N, int k)	667	downheap (WT *heap, int N, int k)
516	{	668	{
517	WT w = heap [k];	669	WT w = heap [k];
518		670
519	while (k < (N >> 1))	671	for (;;)
520	{	672	{
521	int j = k << 1;	673	int c = (k << 1) + 1;
522		674
523	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	675	if (c >= N)
524	++j;
525
526	if (w->at <= heap [j]->at)
527	break;	676	break;
528		677
		678	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		679	? 1 : 0;
		680
		681	if (w->at <= heap [c]->at)
		682	break;
		683
529	heap [k] = heap [j];	684	heap [k] = heap [c];
530	((W)heap [k])->active = k + 1;	685	((W)heap [k])->active = k + 1;
		686
531	k = j;	687	k = c;
532	}	688	}
533		689
534	heap [k] = w;	690	heap [k] = w;
535	((W)heap [k])->active = k + 1;	691	((W)heap [k])->active = k + 1;
536	}	692	}
537		693
538	inline void	694	void inline_size
539	adjustheap (WT *heap, int N, int k, ev_tstamp at)	695	adjustheap (WT *heap, int N, int k)
540	{	696	{
541	ev_tstamp old_at = heap [k]->at;	697	upheap (heap, k);
542	heap [k]->at = at;
543
544	if (old_at < at)
545	downheap (heap, N, k);	698	downheap (heap, N, k);
546	else
547	upheap (heap, k);
548	}	699	}
549		700
550	/*****************************************************************************/	701	/*****************************************************************************/
551		702
552	typedef struct	703	typedef struct
…		…
558	static ANSIG *signals;	709	static ANSIG *signals;
559	static int signalmax;	710	static int signalmax;
560		711
561	static int sigpipe [2];	712	static int sigpipe [2];
562	static sig_atomic_t volatile gotsig;	713	static sig_atomic_t volatile gotsig;
563	static struct ev_io sigev;	714	static ev_io sigev;
564		715
565	static void	716	void inline_size
566	signals_init (ANSIG *base, int count)	717	signals_init (ANSIG *base, int count)
567	{	718	{
568	while (count--)	719	while (count--)
569	{	720	{
570	base->head = 0;	721	base->head = 0;
…		…
575	}	726	}
576		727
577	static void	728	static void
578	sighandler (int signum)	729	sighandler (int signum)
579	{	730	{
580	#if WIN32	731	#if _WIN32
581	signal (signum, sighandler);	732	signal (signum, sighandler);
582	#endif	733	#endif
583		734
584	signals [signum - 1].gotsig = 1;	735	signals [signum - 1].gotsig = 1;
585		736
586	if (!gotsig)	737	if (!gotsig)
587	{	738	{
588	int old_errno = errno;	739	int old_errno = errno;
589	gotsig = 1;	740	gotsig = 1;
590	#ifdef WIN32
591	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
592	#else
593	write (sigpipe [1], &signum, 1);	741	write (sigpipe [1], &signum, 1);
594	#endif
595	errno = old_errno;	742	errno = old_errno;
596	}	743	}
597	}	744	}
598		745
599	void	746	void noinline
600	ev_feed_signal_event (EV_P_ int signum)	747	ev_feed_signal_event (EV_P_ int signum)
601	{	748	{
602	WL w;	749	WL w;
603		750
604	#if EV_MULTIPLICITY	751	#if EV_MULTIPLICITY
605	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	752	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
606	#endif	753	#endif
607		754
608	--signum;	755	--signum;
609		756
610	if (signum < 0 || signum >= signalmax)	757	if (signum < 0 || signum >= signalmax)
…		…
615	for (w = signals [signum].head; w; w = w->next)	762	for (w = signals [signum].head; w; w = w->next)
616	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	763	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
617	}	764	}
618		765
619	static void	766	static void
620	sigcb (EV_P_ struct ev_io *iow, int revents)	767	sigcb (EV_P_ ev_io *iow, int revents)
621	{	768	{
622	int signum;	769	int signum;
623		770
624	#ifdef WIN32
625	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
626	#else
627	read (sigpipe [0], &revents, 1);	771	read (sigpipe [0], &revents, 1);
628	#endif
629	gotsig = 0;	772	gotsig = 0;
630		773
631	for (signum = signalmax; signum--; )	774	for (signum = signalmax; signum--; )
632	if (signals [signum].gotsig)	775	if (signals [signum].gotsig)
633	ev_feed_signal_event (EV_A_ signum + 1);	776	ev_feed_signal_event (EV_A_ signum + 1);
634	}	777	}
635		778
636	static void	779	void inline_speed
		780	fd_intern (int fd)
		781	{
		782	#ifdef _WIN32
		783	int arg = 1;
		784	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		785	#else
		786	fcntl (fd, F_SETFD, FD_CLOEXEC);
		787	fcntl (fd, F_SETFL, O_NONBLOCK);
		788	#endif
		789	}
		790
		791	static void noinline
637	siginit (EV_P)	792	siginit (EV_P)
638	{	793	{
639	#ifndef WIN32	794	fd_intern (sigpipe [0]);
640	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	795	fd_intern (sigpipe [1]);
641	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
642
643	/* rather than sort out wether we really need nb, set it */
644	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
645	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
646	#endif
647		796
648	ev_io_set (&sigev, sigpipe [0], EV_READ);	797	ev_io_set (&sigev, sigpipe [0], EV_READ);
649	ev_io_start (EV_A_ &sigev);	798	ev_io_start (EV_A_ &sigev);
650	ev_unref (EV_A); /* child watcher should not keep loop alive */	799	ev_unref (EV_A); /* child watcher should not keep loop alive */
651	}	800	}
652		801
653	/*****************************************************************************/	802	/*****************************************************************************/
654		803
655	static struct ev_child *childs [PID_HASHSIZE];	804	static WL childs [EV_PID_HASHSIZE];
656		805
657	#ifndef WIN32	806	#ifndef _WIN32
658		807
659	static struct ev_signal childev;	808	static ev_signal childev;
		809
		810	void inline_speed
		811	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		812	{
		813	ev_child *w;
		814
		815	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		816	if (w->pid == pid || !w->pid)
		817	{
		818	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		819	w->rpid = pid;
		820	w->rstatus = status;
		821	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		822	}
		823	}
660		824
661	#ifndef WCONTINUED	825	#ifndef WCONTINUED
662	# define WCONTINUED 0	826	# define WCONTINUED 0
663	#endif	827	#endif
664		828
665	static void	829	static void
666	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
667	{
668	struct ev_child *w;
669
670	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
671	if (w->pid == pid || !w->pid)
672	{
673	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
674	w->rpid = pid;
675	w->rstatus = status;
676	ev_feed_event (EV_A_ (W)w, EV_CHILD);
677	}
678	}
679
680	static void
681	childcb (EV_P_ struct ev_signal *sw, int revents)	830	childcb (EV_P_ ev_signal *sw, int revents)
682	{	831	{
683	int pid, status;	832	int pid, status;
684		833
		834	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
685	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	835	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
686	{	836	if (!WCONTINUED
		837	|| errno != EINVAL
		838	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		839	return;
		840
687	/* make sure we are called again until all childs have been reaped */	841	/* make sure we are called again until all childs have been reaped */
		842	/* we need to do it this way so that the callback gets called before we continue */
688	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	843	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
689		844
690	child_reap (EV_A_ sw, pid, pid, status);	845	child_reap (EV_A_ sw, pid, pid, status);
		846	if (EV_PID_HASHSIZE > 1)
691	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	847	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
692	}
693	}	848	}
694		849
695	#endif	850	#endif
696		851
697	/*****************************************************************************/	852	/*****************************************************************************/
698		853
		854	#if EV_USE_PORT
		855	# include "ev_port.c"
		856	#endif
699	#if EV_USE_KQUEUE	857	#if EV_USE_KQUEUE
700	# include "ev_kqueue.c"	858	# include "ev_kqueue.c"
701	#endif	859	#endif
702	#if EV_USE_EPOLL	860	#if EV_USE_EPOLL
703	# include "ev_epoll.c"	861	# include "ev_epoll.c"
…		…
720	{	878	{
721	return EV_VERSION_MINOR;	879	return EV_VERSION_MINOR;
722	}	880	}
723		881
724	/* return true if we are running with elevated privileges and should ignore env variables */	882	/* return true if we are running with elevated privileges and should ignore env variables */
725	static int	883	int inline_size
726	enable_secure (void)	884	enable_secure (void)
727	{	885	{
728	#ifdef WIN32	886	#ifdef _WIN32
729	return 0;	887	return 0;
730	#else	888	#else
731	return getuid () != geteuid ()	889	return getuid () != geteuid ()
732	|| getgid () != getegid ();	890	|| getgid () != getegid ();
733	#endif	891	#endif
734	}	892	}
735		893
736	int	894	unsigned int
737	ev_method (EV_P)	895	ev_supported_backends (void)
738	{	896	{
739	return method;	897	unsigned int flags = 0;
740	}
741		898
742	static void	899	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
743	loop_init (EV_P_ int methods)	900	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		901	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		902	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		903	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		904
		905	return flags;
		906	}
		907
		908	unsigned int
		909	ev_recommended_backends (void)
744	{	910	{
745	if (!method)	911	unsigned int flags = ev_supported_backends ();
		912
		913	#ifndef __NetBSD__
		914	/* kqueue is borked on everything but netbsd apparently */
		915	/* it usually doesn't work correctly on anything but sockets and pipes */
		916	flags &= ~EVBACKEND_KQUEUE;
		917	#endif
		918	#ifdef __APPLE__
		919	// flags &= ~EVBACKEND_KQUEUE; for documentation
		920	flags &= ~EVBACKEND_POLL;
		921	#endif
		922
		923	return flags;
		924	}
		925
		926	unsigned int
		927	ev_embeddable_backends (void)
		928	{
		929	return EVBACKEND_EPOLL
		930	| EVBACKEND_KQUEUE
		931	| EVBACKEND_PORT;
		932	}
		933
		934	unsigned int
		935	ev_backend (EV_P)
		936	{
		937	return backend;
		938	}
		939
		940	unsigned int
		941	ev_loop_count (EV_P)
		942	{
		943	return loop_count;
		944	}
		945
		946	static void noinline
		947	loop_init (EV_P_ unsigned int flags)
		948	{
		949	if (!backend)
746	{	950	{
747	#if EV_USE_MONOTONIC	951	#if EV_USE_MONOTONIC
748	{	952	{
749	struct timespec ts;	953	struct timespec ts;
750	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	954	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
755	ev_rt_now = ev_time ();	959	ev_rt_now = ev_time ();
756	mn_now = get_clock ();	960	mn_now = get_clock ();
757	now_floor = mn_now;	961	now_floor = mn_now;
758	rtmn_diff = ev_rt_now - mn_now;	962	rtmn_diff = ev_rt_now - mn_now;
759		963
760	if (methods == EVMETHOD_AUTO)	964	/* pid check not overridable via env */
761	if (!enable_secure () && getenv ("LIBEV_METHODS"))	965	#ifndef _WIN32
		966	if (flags & EVFLAG_FORKCHECK)
		967	curpid = getpid ();
		968	#endif
		969
		970	if (!(flags & EVFLAG_NOENV)
		971	&& !enable_secure ()
		972	&& getenv ("LIBEV_FLAGS"))
762	methods = atoi (getenv ("LIBEV_METHODS"));	973	flags = atoi (getenv ("LIBEV_FLAGS"));
763	else
764	methods = EVMETHOD_ANY;
765		974
766	method = 0;	975	if (!(flags & 0x0000ffffUL))
		976	flags |= ev_recommended_backends ();
		977
		978	backend = 0;
		979	backend_fd = -1;
767	#if EV_USE_WIN32	980	#if EV_USE_INOTIFY
768	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	981	fs_fd = -2;
		982	#endif
		983
		984	#if EV_USE_PORT
		985	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
769	#endif	986	#endif
770	#if EV_USE_KQUEUE	987	#if EV_USE_KQUEUE
771	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	988	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
772	#endif	989	#endif
773	#if EV_USE_EPOLL	990	#if EV_USE_EPOLL
774	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	991	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
775	#endif	992	#endif
776	#if EV_USE_POLL	993	#if EV_USE_POLL
777	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	994	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
778	#endif	995	#endif
779	#if EV_USE_SELECT	996	#if EV_USE_SELECT
780	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	997	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
781	#endif	998	#endif
782		999
783	ev_init (&sigev, sigcb);	1000	ev_init (&sigev, sigcb);
784	ev_set_priority (&sigev, EV_MAXPRI);	1001	ev_set_priority (&sigev, EV_MAXPRI);
785	}	1002	}
786	}	1003	}
787		1004
788	void	1005	static void noinline
789	loop_destroy (EV_P)	1006	loop_destroy (EV_P)
790	{	1007	{
791	int i;	1008	int i;
792		1009
793	#if EV_USE_WIN32	1010	#if EV_USE_INOTIFY
794	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	1011	if (fs_fd >= 0)
		1012	close (fs_fd);
		1013	#endif
		1014
		1015	if (backend_fd >= 0)
		1016	close (backend_fd);
		1017
		1018	#if EV_USE_PORT
		1019	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
795	#endif	1020	#endif
796	#if EV_USE_KQUEUE	1021	#if EV_USE_KQUEUE
797	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1022	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
798	#endif	1023	#endif
799	#if EV_USE_EPOLL	1024	#if EV_USE_EPOLL
800	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1025	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
801	#endif	1026	#endif
802	#if EV_USE_POLL	1027	#if EV_USE_POLL
803	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1028	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
804	#endif	1029	#endif
805	#if EV_USE_SELECT	1030	#if EV_USE_SELECT
806	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1031	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
807	#endif	1032	#endif
808		1033
809	for (i = NUMPRI; i--; )	1034	for (i = NUMPRI; i--; )
		1035	{
810	array_free (pending, [i]);	1036	array_free (pending, [i]);
		1037	#if EV_IDLE_ENABLE
		1038	array_free (idle, [i]);
		1039	#endif
		1040	}
811		1041
812	/* have to use the microsoft-never-gets-it-right macro */	1042	/* have to use the microsoft-never-gets-it-right macro */
813	array_free_microshit (fdchange);	1043	array_free (fdchange, EMPTY);
814	array_free_microshit (timer);	1044	array_free (timer, EMPTY);
815	#if EV_PERIODICS	1045	#if EV_PERIODIC_ENABLE
816	array_free_microshit (periodic);	1046	array_free (periodic, EMPTY);
817	#endif	1047	#endif
818	array_free_microshit (idle);	1048	array_free (prepare, EMPTY);
819	array_free_microshit (prepare);	1049	array_free (check, EMPTY);
820	array_free_microshit (check);
821		1050
822	method = 0;	1051	backend = 0;
823	}	1052	}
824		1053
825	static void	1054	void inline_size infy_fork (EV_P);
		1055
		1056	void inline_size
826	loop_fork (EV_P)	1057	loop_fork (EV_P)
827	{	1058	{
		1059	#if EV_USE_PORT
		1060	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1061	#endif
		1062	#if EV_USE_KQUEUE
		1063	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1064	#endif
828	#if EV_USE_EPOLL	1065	#if EV_USE_EPOLL
829	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1066	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
830	#endif	1067	#endif
831	#if EV_USE_KQUEUE	1068	#if EV_USE_INOTIFY
832	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1069	infy_fork (EV_A);
833	#endif	1070	#endif
834		1071
835	if (ev_is_active (&sigev))	1072	if (ev_is_active (&sigev))
836	{	1073	{
837	/* default loop */	1074	/* default loop */
…		…
850	postfork = 0;	1087	postfork = 0;
851	}	1088	}
852		1089
853	#if EV_MULTIPLICITY	1090	#if EV_MULTIPLICITY
854	struct ev_loop *	1091	struct ev_loop *
855	ev_loop_new (int methods)	1092	ev_loop_new (unsigned int flags)
856	{	1093	{
857	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1094	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
858		1095
859	memset (loop, 0, sizeof (struct ev_loop));	1096	memset (loop, 0, sizeof (struct ev_loop));
860		1097
861	loop_init (EV_A_ methods);	1098	loop_init (EV_A_ flags);
862		1099
863	if (ev_method (EV_A))	1100	if (ev_backend (EV_A))
864	return loop;	1101	return loop;
865		1102
866	return 0;	1103	return 0;
867	}	1104	}
868		1105
…		…
881		1118
882	#endif	1119	#endif
883		1120
884	#if EV_MULTIPLICITY	1121	#if EV_MULTIPLICITY
885	struct ev_loop *	1122	struct ev_loop *
		1123	ev_default_loop_init (unsigned int flags)
886	#else	1124	#else
887	int	1125	int
		1126	ev_default_loop (unsigned int flags)
888	#endif	1127	#endif
889	ev_default_loop (int methods)
890	{	1128	{
891	if (sigpipe [0] == sigpipe [1])	1129	if (sigpipe [0] == sigpipe [1])
892	if (pipe (sigpipe))	1130	if (pipe (sigpipe))
893	return 0;	1131	return 0;
894		1132
895	if (!default_loop)	1133	if (!ev_default_loop_ptr)
896	{	1134	{
897	#if EV_MULTIPLICITY	1135	#if EV_MULTIPLICITY
898	struct ev_loop *loop = default_loop = &default_loop_struct;	1136	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
899	#else	1137	#else
900	default_loop = 1;	1138	ev_default_loop_ptr = 1;
901	#endif	1139	#endif
902		1140
903	loop_init (EV_A_ methods);	1141	loop_init (EV_A_ flags);
904		1142
905	if (ev_method (EV_A))	1143	if (ev_backend (EV_A))
906	{	1144	{
907	siginit (EV_A);	1145	siginit (EV_A);
908		1146
909	#ifndef WIN32	1147	#ifndef _WIN32
910	ev_signal_init (&childev, childcb, SIGCHLD);	1148	ev_signal_init (&childev, childcb, SIGCHLD);
911	ev_set_priority (&childev, EV_MAXPRI);	1149	ev_set_priority (&childev, EV_MAXPRI);
912	ev_signal_start (EV_A_ &childev);	1150	ev_signal_start (EV_A_ &childev);
913	ev_unref (EV_A); /* child watcher should not keep loop alive */	1151	ev_unref (EV_A); /* child watcher should not keep loop alive */
914	#endif	1152	#endif
915	}	1153	}
916	else	1154	else
917	default_loop = 0;	1155	ev_default_loop_ptr = 0;
918	}	1156	}
919		1157
920	return default_loop;	1158	return ev_default_loop_ptr;
921	}	1159	}
922		1160
923	void	1161	void
924	ev_default_destroy (void)	1162	ev_default_destroy (void)
925	{	1163	{
926	#if EV_MULTIPLICITY	1164	#if EV_MULTIPLICITY
927	struct ev_loop *loop = default_loop;	1165	struct ev_loop *loop = ev_default_loop_ptr;
928	#endif	1166	#endif
929		1167
930	#ifndef WIN32	1168	#ifndef _WIN32
931	ev_ref (EV_A); /* child watcher */	1169	ev_ref (EV_A); /* child watcher */
932	ev_signal_stop (EV_A_ &childev);	1170	ev_signal_stop (EV_A_ &childev);
933	#endif	1171	#endif
934		1172
935	ev_ref (EV_A); /* signal watcher */	1173	ev_ref (EV_A); /* signal watcher */
…		…
943		1181
944	void	1182	void
945	ev_default_fork (void)	1183	ev_default_fork (void)
946	{	1184	{
947	#if EV_MULTIPLICITY	1185	#if EV_MULTIPLICITY
948	struct ev_loop *loop = default_loop;	1186	struct ev_loop *loop = ev_default_loop_ptr;
949	#endif	1187	#endif
950		1188
951	if (method)	1189	if (backend)
952	postfork = 1;	1190	postfork = 1;
953	}	1191	}
954		1192
955	/*****************************************************************************/	1193	/*****************************************************************************/
956		1194
957	static int	1195	void
958	any_pending (EV_P)	1196	ev_invoke (EV_P_ void *w, int revents)
959	{	1197	{
960	int pri;	1198	EV_CB_INVOKE ((W)w, revents);
961
962	for (pri = NUMPRI; pri--; )
963	if (pendingcnt [pri])
964	return 1;
965
966	return 0;
967	}	1199	}
968		1200
969	static void	1201	void inline_speed
970	call_pending (EV_P)	1202	call_pending (EV_P)
971	{	1203	{
972	int pri;	1204	int pri;
973		1205
974	for (pri = NUMPRI; pri--; )	1206	for (pri = NUMPRI; pri--; )
975	while (pendingcnt [pri])	1207	while (pendingcnt [pri])
976	{	1208	{
977	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1209	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
978		1210
979	if (p->w)	1211	if (expect_true (p->w))
980	{	1212	{
		1213	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1214
981	p->w->pending = 0;	1215	p->w->pending = 0;
982	EV_CB_INVOKE (p->w, p->events);	1216	EV_CB_INVOKE (p->w, p->events);
983	}	1217	}
984	}	1218	}
985	}	1219	}
986		1220
987	static void	1221	void inline_size
988	timers_reify (EV_P)	1222	timers_reify (EV_P)
989	{	1223	{
990	while (timercnt && ((WT)timers [0])->at <= mn_now)	1224	while (timercnt && ((WT)timers [0])->at <= mn_now)
991	{	1225	{
992	struct ev_timer *w = timers [0];	1226	ev_timer *w = (ev_timer *)timers [0];
993		1227
994	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1228	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
995		1229
996	/* first reschedule or stop timer */	1230	/* first reschedule or stop timer */
997	if (w->repeat)	1231	if (w->repeat)
998	{	1232	{
999	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1233	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1000		1234
1001	((WT)w)->at += w->repeat;	1235	((WT)w)->at += w->repeat;
1002	if (((WT)w)->at < mn_now)	1236	if (((WT)w)->at < mn_now)
1003	((WT)w)->at = mn_now;	1237	((WT)w)->at = mn_now;
1004		1238
1005	downheap ((WT *)timers, timercnt, 0);	1239	downheap (timers, timercnt, 0);
1006	}	1240	}
1007	else	1241	else
1008	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1242	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1009		1243
1010	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1244	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1011	}	1245	}
1012	}	1246	}
1013		1247
1014	#if EV_PERIODICS	1248	#if EV_PERIODIC_ENABLE
1015	static void	1249	void inline_size
1016	periodics_reify (EV_P)	1250	periodics_reify (EV_P)
1017	{	1251	{
1018	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1252	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1019	{	1253	{
1020	struct ev_periodic *w = periodics [0];	1254	ev_periodic *w = (ev_periodic *)periodics [0];
1021		1255
1022	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1256	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1023		1257
1024	/* first reschedule or stop timer */	1258	/* first reschedule or stop timer */
1025	if (w->reschedule_cb)	1259	if (w->reschedule_cb)
1026	{	1260	{
1027	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1261	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1028
1029	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1262	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1030	downheap ((WT *)periodics, periodiccnt, 0);	1263	downheap (periodics, periodiccnt, 0);
1031	}	1264	}
1032	else if (w->interval)	1265	else if (w->interval)
1033	{	1266	{
1034	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1267	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1268	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1035	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1269	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1036	downheap ((WT *)periodics, periodiccnt, 0);	1270	downheap (periodics, periodiccnt, 0);
1037	}	1271	}
1038	else	1272	else
1039	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1273	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1040		1274
1041	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1275	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1042	}	1276	}
1043	}	1277	}
1044		1278
1045	static void	1279	static void noinline
1046	periodics_reschedule (EV_P)	1280	periodics_reschedule (EV_P)
1047	{	1281	{
1048	int i;	1282	int i;
1049		1283
1050	/* adjust periodics after time jump */	1284	/* adjust periodics after time jump */
1051	for (i = 0; i < periodiccnt; ++i)	1285	for (i = 0; i < periodiccnt; ++i)
1052	{	1286	{
1053	struct ev_periodic *w = periodics [i];	1287	ev_periodic *w = (ev_periodic *)periodics [i];
1054		1288
1055	if (w->reschedule_cb)	1289	if (w->reschedule_cb)
1056	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1290	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1057	else if (w->interval)	1291	else if (w->interval)
1058	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1292	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1059	}	1293	}
1060		1294
1061	/* now rebuild the heap */	1295	/* now rebuild the heap */
1062	for (i = periodiccnt >> 1; i--; )	1296	for (i = periodiccnt >> 1; i--; )
1063	downheap ((WT *)periodics, periodiccnt, i);	1297	downheap (periodics, periodiccnt, i);
1064	}	1298	}
1065	#endif	1299	#endif
1066		1300
1067	inline int	1301	#if EV_IDLE_ENABLE
1068	time_update_monotonic (EV_P)	1302	void inline_size
		1303	idle_reify (EV_P)
1069	{	1304	{
		1305	if (expect_false (idleall))
		1306	{
		1307	int pri;
		1308
		1309	for (pri = NUMPRI; pri--; )
		1310	{
		1311	if (pendingcnt [pri])
		1312	break;
		1313
		1314	if (idlecnt [pri])
		1315	{
		1316	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1317	break;
		1318	}
		1319	}
		1320	}
		1321	}
		1322	#endif
		1323
		1324	void inline_speed
		1325	time_update (EV_P_ ev_tstamp max_block)
		1326	{
		1327	int i;
		1328
		1329	#if EV_USE_MONOTONIC
		1330	if (expect_true (have_monotonic))
		1331	{
		1332	ev_tstamp odiff = rtmn_diff;
		1333
1070	mn_now = get_clock ();	1334	mn_now = get_clock ();
1071		1335
		1336	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1337	/* interpolate in the meantime */
1072	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1338	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1073	{	1339	{
1074	ev_rt_now = rtmn_diff + mn_now;	1340	ev_rt_now = rtmn_diff + mn_now;
1075	return 0;	1341	return;
1076	}	1342	}
1077	else	1343
1078	{
1079	now_floor = mn_now;	1344	now_floor = mn_now;
1080	ev_rt_now = ev_time ();	1345	ev_rt_now = ev_time ();
1081	return 1;
1082	}
1083	}
1084		1346
1085	static void	1347	/* loop a few times, before making important decisions.
1086	time_update (EV_P)	1348	* on the choice of "4": one iteration isn't enough,
1087	{	1349	* in case we get preempted during the calls to
1088	int i;	1350	* ev_time and get_clock. a second call is almost guaranteed
1089		1351	* to succeed in that case, though. and looping a few more times
1090	#if EV_USE_MONOTONIC	1352	* doesn't hurt either as we only do this on time-jumps or
1091	if (expect_true (have_monotonic))	1353	* in the unlikely event of having been preempted here.
1092	{	1354	*/
1093	if (time_update_monotonic (EV_A))	1355	for (i = 4; --i; )
1094	{	1356	{
1095	ev_tstamp odiff = rtmn_diff;
1096
1097	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1098	{
1099	rtmn_diff = ev_rt_now - mn_now;	1357	rtmn_diff = ev_rt_now - mn_now;
1100		1358
1101	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1359	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1102	return; /* all is well */	1360	return; /* all is well */
1103		1361
1104	ev_rt_now = ev_time ();	1362	ev_rt_now = ev_time ();
1105	mn_now = get_clock ();	1363	mn_now = get_clock ();
1106	now_floor = mn_now;	1364	now_floor = mn_now;
1107	}	1365	}
1108		1366
1109	# if EV_PERIODICS	1367	# if EV_PERIODIC_ENABLE
		1368	periodics_reschedule (EV_A);
		1369	# endif
		1370	/* no timer adjustment, as the monotonic clock doesn't jump */
		1371	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1372	}
		1373	else
		1374	#endif
		1375	{
		1376	ev_rt_now = ev_time ();
		1377
		1378	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1379	{
		1380	#if EV_PERIODIC_ENABLE
1110	periodics_reschedule (EV_A);	1381	periodics_reschedule (EV_A);
1111	# endif	1382	#endif
1112	/* no timer adjustment, as the monotonic clock doesn't jump */
1113	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1114	}
1115	}
1116	else
1117	#endif
1118	{
1119	ev_rt_now = ev_time ();
1120
1121	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1122	{
1123	#if EV_PERIODICS
1124	periodics_reschedule (EV_A);
1125	#endif
1126
1127	/* adjust timers. this is easy, as the offset is the same for all */	1383	/* adjust timers. this is easy, as the offset is the same for all of them */
1128	for (i = 0; i < timercnt; ++i)	1384	for (i = 0; i < timercnt; ++i)
1129	((WT)timers [i])->at += ev_rt_now - mn_now;	1385	((WT)timers [i])->at += ev_rt_now - mn_now;
1130	}	1386	}
1131		1387
1132	mn_now = ev_rt_now;	1388	mn_now = ev_rt_now;
…		…
1148	static int loop_done;	1404	static int loop_done;
1149		1405
1150	void	1406	void
1151	ev_loop (EV_P_ int flags)	1407	ev_loop (EV_P_ int flags)
1152	{	1408	{
1153	double block;
1154	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1409	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1410	? EVUNLOOP_ONE
		1411	: EVUNLOOP_CANCEL;
		1412
		1413	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1155		1414
1156	do	1415	do
1157	{	1416	{
		1417	#ifndef _WIN32
		1418	if (expect_false (curpid)) /* penalise the forking check even more */
		1419	if (expect_false (getpid () != curpid))
		1420	{
		1421	curpid = getpid ();
		1422	postfork = 1;
		1423	}
		1424	#endif
		1425
		1426	#if EV_FORK_ENABLE
		1427	/* we might have forked, so queue fork handlers */
		1428	if (expect_false (postfork))
		1429	if (forkcnt)
		1430	{
		1431	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1432	call_pending (EV_A);
		1433	}
		1434	#endif
		1435
1158	/* queue check watchers (and execute them) */	1436	/* queue prepare watchers (and execute them) */
1159	if (expect_false (preparecnt))	1437	if (expect_false (preparecnt))
1160	{	1438	{
1161	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1439	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1162	call_pending (EV_A);	1440	call_pending (EV_A);
1163	}	1441	}
1164		1442
		1443	if (expect_false (!activecnt))
		1444	break;
		1445
1165	/* we might have forked, so reify kernel state if necessary */	1446	/* we might have forked, so reify kernel state if necessary */
1166	if (expect_false (postfork))	1447	if (expect_false (postfork))
1167	loop_fork (EV_A);	1448	loop_fork (EV_A);
1168		1449
1169	/* update fd-related kernel structures */	1450	/* update fd-related kernel structures */
1170	fd_reify (EV_A);	1451	fd_reify (EV_A);
1171		1452
1172	/* calculate blocking time */	1453	/* calculate blocking time */
		1454	{
		1455	ev_tstamp block;
1173		1456
1174	/* we only need this for !monotonic clock or timers, but as we basically	1457	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1175	always have timers, we just calculate it always */	1458	block = 0.; /* do not block at all */
1176	#if EV_USE_MONOTONIC
1177	if (expect_true (have_monotonic))
1178	time_update_monotonic (EV_A);
1179	else	1459	else
1180	#endif
1181	{	1460	{
1182	ev_rt_now = ev_time ();	1461	/* update time to cancel out callback processing overhead */
1183	mn_now = ev_rt_now;	1462	time_update (EV_A_ 1e100);
1184	}
1185		1463
1186	if (flags & EVLOOP_NONBLOCK || idlecnt)
1187	block = 0.;
1188	else
1189	{
1190	block = MAX_BLOCKTIME;	1464	block = MAX_BLOCKTIME;
1191		1465
1192	if (timercnt)	1466	if (timercnt)
1193	{	1467	{
1194	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1468	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1195	if (block > to) block = to;	1469	if (block > to) block = to;
1196	}	1470	}
1197		1471
1198	#if EV_PERIODICS	1472	#if EV_PERIODIC_ENABLE
1199	if (periodiccnt)	1473	if (periodiccnt)
1200	{	1474	{
1201	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1475	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1202	if (block > to) block = to;	1476	if (block > to) block = to;
1203	}	1477	}
1204	#endif	1478	#endif
1205		1479
1206	if (block < 0.) block = 0.;	1480	if (expect_false (block < 0.)) block = 0.;
1207	}	1481	}
1208		1482
		1483	++loop_count;
1209	method_poll (EV_A_ block);	1484	backend_poll (EV_A_ block);
1210		1485
1211	/* update ev_rt_now, do magic */	1486	/* update ev_rt_now, do magic */
1212	time_update (EV_A);	1487	time_update (EV_A_ block);
		1488	}
1213		1489
1214	/* queue pending timers and reschedule them */	1490	/* queue pending timers and reschedule them */
1215	timers_reify (EV_A); /* relative timers called last */	1491	timers_reify (EV_A); /* relative timers called last */
1216	#if EV_PERIODICS	1492	#if EV_PERIODIC_ENABLE
1217	periodics_reify (EV_A); /* absolute timers called first */	1493	periodics_reify (EV_A); /* absolute timers called first */
1218	#endif	1494	#endif
1219		1495
		1496	#if EV_IDLE_ENABLE
1220	/* queue idle watchers unless io or timers are pending */	1497	/* queue idle watchers unless other events are pending */
1221	if (idlecnt && !any_pending (EV_A))	1498	idle_reify (EV_A);
1222	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1499	#endif
1223		1500
1224	/* queue check watchers, to be executed first */	1501	/* queue check watchers, to be executed first */
1225	if (checkcnt)	1502	if (expect_false (checkcnt))
1226	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1503	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1227		1504
1228	call_pending (EV_A);	1505	call_pending (EV_A);
		1506
1229	}	1507	}
1230	while (activecnt && !loop_done);	1508	while (expect_true (activecnt && !loop_done));
1231		1509
1232	if (loop_done != 2)	1510	if (loop_done == EVUNLOOP_ONE)
1233	loop_done = 0;	1511	loop_done = EVUNLOOP_CANCEL;
1234	}	1512	}
1235		1513
1236	void	1514	void
1237	ev_unloop (EV_P_ int how)	1515	ev_unloop (EV_P_ int how)
1238	{	1516	{
1239	loop_done = how;	1517	loop_done = how;
1240	}	1518	}
1241		1519
1242	/*****************************************************************************/	1520	/*****************************************************************************/
1243		1521
1244	inline void	1522	void inline_size
1245	wlist_add (WL *head, WL elem)	1523	wlist_add (WL *head, WL elem)
1246	{	1524	{
1247	elem->next = *head;	1525	elem->next = *head;
1248	*head = elem;	1526	*head = elem;
1249	}	1527	}
1250		1528
1251	inline void	1529	void inline_size
1252	wlist_del (WL *head, WL elem)	1530	wlist_del (WL *head, WL elem)
1253	{	1531	{
1254	while (*head)	1532	while (*head)
1255	{	1533	{
1256	if (*head == elem)	1534	if (*head == elem)
…		…
1261		1539
1262	head = &(*head)->next;	1540	head = &(*head)->next;
1263	}	1541	}
1264	}	1542	}
1265		1543
1266	inline void	1544	void inline_speed
1267	ev_clear_pending (EV_P_ W w)	1545	clear_pending (EV_P_ W w)
1268	{	1546	{
1269	if (w->pending)	1547	if (w->pending)
1270	{	1548	{
1271	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1549	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1272	w->pending = 0;	1550	w->pending = 0;
1273	}	1551	}
1274	}	1552	}
1275		1553
1276	inline void	1554	int
		1555	ev_clear_pending (EV_P_ void *w)
		1556	{
		1557	W w_ = (W)w;
		1558	int pending = w_->pending;
		1559
		1560	if (expect_true (pending))
		1561	{
		1562	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1563	w_->pending = 0;
		1564	p->w = 0;
		1565	return p->events;
		1566	}
		1567	else
		1568	return 0;
		1569	}
		1570
		1571	void inline_size
		1572	pri_adjust (EV_P_ W w)
		1573	{
		1574	int pri = w->priority;
		1575	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1576	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1577	w->priority = pri;
		1578	}
		1579
		1580	void inline_speed
1277	ev_start (EV_P_ W w, int active)	1581	ev_start (EV_P_ W w, int active)
1278	{	1582	{
1279	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1583	pri_adjust (EV_A_ w);
1280	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1281
1282	w->active = active;	1584	w->active = active;
1283	ev_ref (EV_A);	1585	ev_ref (EV_A);
1284	}	1586	}
1285		1587
1286	inline void	1588	void inline_size
1287	ev_stop (EV_P_ W w)	1589	ev_stop (EV_P_ W w)
1288	{	1590	{
1289	ev_unref (EV_A);	1591	ev_unref (EV_A);
1290	w->active = 0;	1592	w->active = 0;
1291	}	1593	}
1292		1594
1293	/*****************************************************************************/	1595	/*****************************************************************************/
1294		1596
1295	void	1597	void noinline
1296	ev_io_start (EV_P_ struct ev_io *w)	1598	ev_io_start (EV_P_ ev_io *w)
1297	{	1599	{
1298	int fd = w->fd;	1600	int fd = w->fd;
1299		1601
1300	if (ev_is_active (w))	1602	if (expect_false (ev_is_active (w)))
1301	return;	1603	return;
1302		1604
1303	assert (("ev_io_start called with negative fd", fd >= 0));	1605	assert (("ev_io_start called with negative fd", fd >= 0));
1304		1606
1305	ev_start (EV_A_ (W)w, 1);	1607	ev_start (EV_A_ (W)w, 1);
1306	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1608	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1307	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1609	wlist_add (&anfds[fd].head, (WL)w);
1308		1610
1309	fd_change (EV_A_ fd);	1611	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1612	w->events &= ~EV_IOFDSET;
1310	}	1613	}
1311		1614
1312	void	1615	void noinline
1313	ev_io_stop (EV_P_ struct ev_io *w)	1616	ev_io_stop (EV_P_ ev_io *w)
1314	{	1617	{
1315	ev_clear_pending (EV_A_ (W)w);	1618	clear_pending (EV_A_ (W)w);
1316	if (!ev_is_active (w))	1619	if (expect_false (!ev_is_active (w)))
1317	return;	1620	return;
1318		1621
1319	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1622	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1320		1623
1321	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1624	wlist_del (&anfds[w->fd].head, (WL)w);
1322	ev_stop (EV_A_ (W)w);	1625	ev_stop (EV_A_ (W)w);
1323		1626
1324	fd_change (EV_A_ w->fd);	1627	fd_change (EV_A_ w->fd, 1);
1325	}	1628	}
1326		1629
1327	void	1630	void noinline
1328	ev_timer_start (EV_P_ struct ev_timer *w)	1631	ev_timer_start (EV_P_ ev_timer *w)
		1632	{
		1633	if (expect_false (ev_is_active (w)))
		1634	return;
		1635
		1636	((WT)w)->at += mn_now;
		1637
		1638	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
		1639
		1640	ev_start (EV_A_ (W)w, ++timercnt);
		1641	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
		1642	timers [timercnt - 1] = (WT)w;
		1643	upheap (timers, timercnt - 1);
		1644
		1645	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1646	}
		1647
		1648	void noinline
		1649	ev_timer_stop (EV_P_ ev_timer *w)
		1650	{
		1651	clear_pending (EV_A_ (W)w);
		1652	if (expect_false (!ev_is_active (w)))
		1653	return;
		1654
		1655	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
		1656
		1657	{
		1658	int active = ((W)w)->active;
		1659
		1660	if (expect_true (--active < --timercnt))
		1661	{
		1662	timers [active] = timers [timercnt];
		1663	adjustheap (timers, timercnt, active);
		1664	}
		1665	}
		1666
		1667	((WT)w)->at -= mn_now;
		1668
		1669	ev_stop (EV_A_ (W)w);
		1670	}
		1671
		1672	void noinline
		1673	ev_timer_again (EV_P_ ev_timer *w)
1329	{	1674	{
1330	if (ev_is_active (w))	1675	if (ev_is_active (w))
1331	return;
1332
1333	((WT)w)->at += mn_now;
1334
1335	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1336
1337	ev_start (EV_A_ (W)w, ++timercnt);
1338	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1339	timers [timercnt - 1] = w;
1340	upheap ((WT *)timers, timercnt - 1);
1341
1342	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1343	}
1344
1345	void
1346	ev_timer_stop (EV_P_ struct ev_timer *w)
1347	{
1348	ev_clear_pending (EV_A_ (W)w);
1349	if (!ev_is_active (w))
1350	return;
1351
1352	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1353
1354	if (((W)w)->active < timercnt--)
1355	{
1356	timers [((W)w)->active - 1] = timers [timercnt];
1357	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1358	}
1359
1360	((WT)w)->at -= mn_now;
1361
1362	ev_stop (EV_A_ (W)w);
1363	}
1364
1365	void
1366	ev_timer_again (EV_P_ struct ev_timer *w)
1367	{
1368	if (ev_is_active (w))
1369	{	1676	{
1370	if (w->repeat)	1677	if (w->repeat)
		1678	{
		1679	((WT)w)->at = mn_now + w->repeat;
1371	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1680	adjustheap (timers, timercnt, ((W)w)->active - 1);
		1681	}
1372	else	1682	else
1373	ev_timer_stop (EV_A_ w);	1683	ev_timer_stop (EV_A_ w);
1374	}	1684	}
1375	else if (w->repeat)	1685	else if (w->repeat)
		1686	{
		1687	w->at = w->repeat;
1376	ev_timer_start (EV_A_ w);	1688	ev_timer_start (EV_A_ w);
		1689	}
1377	}	1690	}
1378		1691
1379	#if EV_PERIODICS	1692	#if EV_PERIODIC_ENABLE
1380	void	1693	void noinline
1381	ev_periodic_start (EV_P_ struct ev_periodic *w)	1694	ev_periodic_start (EV_P_ ev_periodic *w)
1382	{	1695	{
1383	if (ev_is_active (w))	1696	if (expect_false (ev_is_active (w)))
1384	return;	1697	return;
1385		1698
1386	if (w->reschedule_cb)	1699	if (w->reschedule_cb)
1387	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1700	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1388	else if (w->interval)	1701	else if (w->interval)
1389	{	1702	{
1390	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1703	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1391	/* this formula differs from the one in periodic_reify because we do not always round up */	1704	/* this formula differs from the one in periodic_reify because we do not always round up */
1392	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1705	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1393	}	1706	}
		1707	else
		1708	((WT)w)->at = w->offset;
1394		1709
1395	ev_start (EV_A_ (W)w, ++periodiccnt);	1710	ev_start (EV_A_ (W)w, ++periodiccnt);
1396	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1711	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1397	periodics [periodiccnt - 1] = w;	1712	periodics [periodiccnt - 1] = (WT)w;
1398	upheap ((WT *)periodics, periodiccnt - 1);	1713	upheap (periodics, periodiccnt - 1);
1399		1714
1400	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1715	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1401	}	1716	}
1402		1717
1403	void	1718	void noinline
1404	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1719	ev_periodic_stop (EV_P_ ev_periodic *w)
1405	{	1720	{
1406	ev_clear_pending (EV_A_ (W)w);	1721	clear_pending (EV_A_ (W)w);
1407	if (!ev_is_active (w))	1722	if (expect_false (!ev_is_active (w)))
1408	return;	1723	return;
1409		1724
1410	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1725	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1411		1726
1412	if (((W)w)->active < periodiccnt--)	1727	{
		1728	int active = ((W)w)->active;
		1729
		1730	if (expect_true (--active < --periodiccnt))
1413	{	1731	{
1414	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1732	periodics [active] = periodics [periodiccnt];
1415	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1733	adjustheap (periodics, periodiccnt, active);
1416	}	1734	}
		1735	}
1417		1736
1418	ev_stop (EV_A_ (W)w);	1737	ev_stop (EV_A_ (W)w);
1419	}	1738	}
1420		1739
1421	void	1740	void noinline
1422	ev_periodic_again (EV_P_ struct ev_periodic *w)	1741	ev_periodic_again (EV_P_ ev_periodic *w)
1423	{	1742	{
1424	/* TODO: use adjustheap and recalculation */	1743	/* TODO: use adjustheap and recalculation */
1425	ev_periodic_stop (EV_A_ w);	1744	ev_periodic_stop (EV_A_ w);
1426	ev_periodic_start (EV_A_ w);	1745	ev_periodic_start (EV_A_ w);
1427	}	1746	}
1428	#endif	1747	#endif
1429		1748
1430	void
1431	ev_idle_start (EV_P_ struct ev_idle *w)
1432	{
1433	if (ev_is_active (w))
1434	return;
1435
1436	ev_start (EV_A_ (W)w, ++idlecnt);
1437	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1438	idles [idlecnt - 1] = w;
1439	}
1440
1441	void
1442	ev_idle_stop (EV_P_ struct ev_idle *w)
1443	{
1444	ev_clear_pending (EV_A_ (W)w);
1445	if (ev_is_active (w))
1446	return;
1447
1448	idles [((W)w)->active - 1] = idles [--idlecnt];
1449	ev_stop (EV_A_ (W)w);
1450	}
1451
1452	void
1453	ev_prepare_start (EV_P_ struct ev_prepare *w)
1454	{
1455	if (ev_is_active (w))
1456	return;
1457
1458	ev_start (EV_A_ (W)w, ++preparecnt);
1459	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1460	prepares [preparecnt - 1] = w;
1461	}
1462
1463	void
1464	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1465	{
1466	ev_clear_pending (EV_A_ (W)w);
1467	if (ev_is_active (w))
1468	return;
1469
1470	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1471	ev_stop (EV_A_ (W)w);
1472	}
1473
1474	void
1475	ev_check_start (EV_P_ struct ev_check *w)
1476	{
1477	if (ev_is_active (w))
1478	return;
1479
1480	ev_start (EV_A_ (W)w, ++checkcnt);
1481	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1482	checks [checkcnt - 1] = w;
1483	}
1484
1485	void
1486	ev_check_stop (EV_P_ struct ev_check *w)
1487	{
1488	ev_clear_pending (EV_A_ (W)w);
1489	if (!ev_is_active (w))
1490	return;
1491
1492	checks [((W)w)->active - 1] = checks [--checkcnt];
1493	ev_stop (EV_A_ (W)w);
1494	}
1495
1496	#ifndef SA_RESTART	1749	#ifndef SA_RESTART
1497	# define SA_RESTART 0	1750	# define SA_RESTART 0
1498	#endif	1751	#endif
1499		1752
1500	void	1753	void noinline
1501	ev_signal_start (EV_P_ struct ev_signal *w)	1754	ev_signal_start (EV_P_ ev_signal *w)
1502	{	1755	{
1503	#if EV_MULTIPLICITY	1756	#if EV_MULTIPLICITY
1504	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1757	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1505	#endif	1758	#endif
1506	if (ev_is_active (w))	1759	if (expect_false (ev_is_active (w)))
1507	return;	1760	return;
1508		1761
1509	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1762	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1510		1763
		1764	{
		1765	#ifndef _WIN32
		1766	sigset_t full, prev;
		1767	sigfillset (&full);
		1768	sigprocmask (SIG_SETMASK, &full, &prev);
		1769	#endif
		1770
		1771	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1772
		1773	#ifndef _WIN32
		1774	sigprocmask (SIG_SETMASK, &prev, 0);
		1775	#endif
		1776	}
		1777
1511	ev_start (EV_A_ (W)w, 1);	1778	ev_start (EV_A_ (W)w, 1);
1512	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1513	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1779	wlist_add (&signals [w->signum - 1].head, (WL)w);
1514		1780
1515	if (!((WL)w)->next)	1781	if (!((WL)w)->next)
1516	{	1782	{
1517	#if WIN32	1783	#if _WIN32
1518	signal (w->signum, sighandler);	1784	signal (w->signum, sighandler);
1519	#else	1785	#else
1520	struct sigaction sa;	1786	struct sigaction sa;
1521	sa.sa_handler = sighandler;	1787	sa.sa_handler = sighandler;
1522	sigfillset (&sa.sa_mask);	1788	sigfillset (&sa.sa_mask);
…		…
1524	sigaction (w->signum, &sa, 0);	1790	sigaction (w->signum, &sa, 0);
1525	#endif	1791	#endif
1526	}	1792	}
1527	}	1793	}
1528		1794
1529	void	1795	void noinline
1530	ev_signal_stop (EV_P_ struct ev_signal *w)	1796	ev_signal_stop (EV_P_ ev_signal *w)
1531	{	1797	{
1532	ev_clear_pending (EV_A_ (W)w);	1798	clear_pending (EV_A_ (W)w);
1533	if (!ev_is_active (w))	1799	if (expect_false (!ev_is_active (w)))
1534	return;	1800	return;
1535		1801
1536	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1802	wlist_del (&signals [w->signum - 1].head, (WL)w);
1537	ev_stop (EV_A_ (W)w);	1803	ev_stop (EV_A_ (W)w);
1538		1804
1539	if (!signals [w->signum - 1].head)	1805	if (!signals [w->signum - 1].head)
1540	signal (w->signum, SIG_DFL);	1806	signal (w->signum, SIG_DFL);
1541	}	1807	}
1542		1808
1543	void	1809	void
1544	ev_child_start (EV_P_ struct ev_child *w)	1810	ev_child_start (EV_P_ ev_child *w)
1545	{	1811	{
1546	#if EV_MULTIPLICITY	1812	#if EV_MULTIPLICITY
1547	assert (("child watchers are only supported in the default loop", loop == default_loop));	1813	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1548	#endif	1814	#endif
1549	if (ev_is_active (w))	1815	if (expect_false (ev_is_active (w)))
1550	return;	1816	return;
1551		1817
1552	ev_start (EV_A_ (W)w, 1);	1818	ev_start (EV_A_ (W)w, 1);
1553	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1819	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1554	}	1820	}
1555		1821
1556	void	1822	void
1557	ev_child_stop (EV_P_ struct ev_child *w)	1823	ev_child_stop (EV_P_ ev_child *w)
1558	{	1824	{
1559	ev_clear_pending (EV_A_ (W)w);	1825	clear_pending (EV_A_ (W)w);
1560	if (!ev_is_active (w))	1826	if (expect_false (!ev_is_active (w)))
1561	return;	1827	return;
1562		1828
1563	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1829	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1564	ev_stop (EV_A_ (W)w);	1830	ev_stop (EV_A_ (W)w);
1565	}	1831	}
1566		1832
		1833	#if EV_STAT_ENABLE
		1834
		1835	# ifdef _WIN32
		1836	# undef lstat
		1837	# define lstat(a,b) _stati64 (a,b)
		1838	# endif
		1839
		1840	#define DEF_STAT_INTERVAL 5.0074891
		1841	#define MIN_STAT_INTERVAL 0.1074891
		1842
		1843	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1844
		1845	#if EV_USE_INOTIFY
		1846	# define EV_INOTIFY_BUFSIZE 8192
		1847
		1848	static void noinline
		1849	infy_add (EV_P_ ev_stat *w)
		1850	{
		1851	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);
		1852
		1853	if (w->wd < 0)
		1854	{
		1855	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1856
		1857	/* monitor some parent directory for speedup hints */
		1858	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1859	{
		1860	char path [4096];
		1861	strcpy (path, w->path);
		1862
		1863	do
		1864	{
		1865	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1866	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1867
		1868	char *pend = strrchr (path, '/');
		1869
		1870	if (!pend)
		1871	break; /* whoops, no '/', complain to your admin */
		1872
		1873	*pend = 0;
		1874	w->wd = inotify_add_watch (fs_fd, path, mask);
		1875	}
		1876	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1877	}
		1878	}
		1879	else
		1880	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1881
		1882	if (w->wd >= 0)
		1883	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1884	}
		1885
		1886	static void noinline
		1887	infy_del (EV_P_ ev_stat *w)
		1888	{
		1889	int slot;
		1890	int wd = w->wd;
		1891
		1892	if (wd < 0)
		1893	return;
		1894
		1895	w->wd = -2;
		1896	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1897	wlist_del (&fs_hash [slot].head, (WL)w);
		1898
		1899	/* remove this watcher, if others are watching it, they will rearm */
		1900	inotify_rm_watch (fs_fd, wd);
		1901	}
		1902
		1903	static void noinline
		1904	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1905	{
		1906	if (slot < 0)
		1907	/* overflow, need to check for all hahs slots */
		1908	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1909	infy_wd (EV_A_ slot, wd, ev);
		1910	else
		1911	{
		1912	WL w_;
		1913
		1914	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1915	{
		1916	ev_stat *w = (ev_stat *)w_;
		1917	w_ = w_->next; /* lets us remove this watcher and all before it */
		1918
		1919	if (w->wd == wd || wd == -1)
		1920	{
		1921	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1922	{
		1923	w->wd = -1;
		1924	infy_add (EV_A_ w); /* re-add, no matter what */
		1925	}
		1926
		1927	stat_timer_cb (EV_A_ &w->timer, 0);
		1928	}
		1929	}
		1930	}
		1931	}
		1932
		1933	static void
		1934	infy_cb (EV_P_ ev_io *w, int revents)
		1935	{
		1936	char buf [EV_INOTIFY_BUFSIZE];
		1937	struct inotify_event *ev = (struct inotify_event *)buf;
		1938	int ofs;
		1939	int len = read (fs_fd, buf, sizeof (buf));
		1940
		1941	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1942	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1943	}
		1944
		1945	void inline_size
		1946	infy_init (EV_P)
		1947	{
		1948	if (fs_fd != -2)
		1949	return;
		1950
		1951	fs_fd = inotify_init ();
		1952
		1953	if (fs_fd >= 0)
		1954	{
		1955	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1956	ev_set_priority (&fs_w, EV_MAXPRI);
		1957	ev_io_start (EV_A_ &fs_w);
		1958	}
		1959	}
		1960
		1961	void inline_size
		1962	infy_fork (EV_P)
		1963	{
		1964	int slot;
		1965
		1966	if (fs_fd < 0)
		1967	return;
		1968
		1969	close (fs_fd);
		1970	fs_fd = inotify_init ();
		1971
		1972	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1973	{
		1974	WL w_ = fs_hash [slot].head;
		1975	fs_hash [slot].head = 0;
		1976
		1977	while (w_)
		1978	{
		1979	ev_stat *w = (ev_stat *)w_;
		1980	w_ = w_->next; /* lets us add this watcher */
		1981
		1982	w->wd = -1;
		1983
		1984	if (fs_fd >= 0)
		1985	infy_add (EV_A_ w); /* re-add, no matter what */
		1986	else
		1987	ev_timer_start (EV_A_ &w->timer);
		1988	}
		1989
		1990	}
		1991	}
		1992
		1993	#endif
		1994
		1995	void
		1996	ev_stat_stat (EV_P_ ev_stat *w)
		1997	{
		1998	if (lstat (w->path, &w->attr) < 0)
		1999	w->attr.st_nlink = 0;
		2000	else if (!w->attr.st_nlink)
		2001	w->attr.st_nlink = 1;
		2002	}
		2003
		2004	static void noinline
		2005	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2006	{
		2007	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2008
		2009	/* we copy this here each the time so that */
		2010	/* prev has the old value when the callback gets invoked */
		2011	w->prev = w->attr;
		2012	ev_stat_stat (EV_A_ w);
		2013
		2014	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2015	if (
		2016	w->prev.st_dev != w->attr.st_dev
		2017	|| w->prev.st_ino != w->attr.st_ino
		2018	|| w->prev.st_mode != w->attr.st_mode
		2019	|| w->prev.st_nlink != w->attr.st_nlink
		2020	|| w->prev.st_uid != w->attr.st_uid
		2021	|| w->prev.st_gid != w->attr.st_gid
		2022	|| w->prev.st_rdev != w->attr.st_rdev
		2023	|| w->prev.st_size != w->attr.st_size
		2024	|| w->prev.st_atime != w->attr.st_atime
		2025	|| w->prev.st_mtime != w->attr.st_mtime
		2026	|| w->prev.st_ctime != w->attr.st_ctime
		2027	) {
		2028	#if EV_USE_INOTIFY
		2029	infy_del (EV_A_ w);
		2030	infy_add (EV_A_ w);
		2031	ev_stat_stat (EV_A_ w); /* avoid race... */
		2032	#endif
		2033
		2034	ev_feed_event (EV_A_ w, EV_STAT);
		2035	}
		2036	}
		2037
		2038	void
		2039	ev_stat_start (EV_P_ ev_stat *w)
		2040	{
		2041	if (expect_false (ev_is_active (w)))
		2042	return;
		2043
		2044	/* since we use memcmp, we need to clear any padding data etc. */
		2045	memset (&w->prev, 0, sizeof (ev_statdata));
		2046	memset (&w->attr, 0, sizeof (ev_statdata));
		2047
		2048	ev_stat_stat (EV_A_ w);
		2049
		2050	if (w->interval < MIN_STAT_INTERVAL)
		2051	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2052
		2053	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2054	ev_set_priority (&w->timer, ev_priority (w));
		2055
		2056	#if EV_USE_INOTIFY
		2057	infy_init (EV_A);
		2058
		2059	if (fs_fd >= 0)
		2060	infy_add (EV_A_ w);
		2061	else
		2062	#endif
		2063	ev_timer_start (EV_A_ &w->timer);
		2064
		2065	ev_start (EV_A_ (W)w, 1);
		2066	}
		2067
		2068	void
		2069	ev_stat_stop (EV_P_ ev_stat *w)
		2070	{
		2071	clear_pending (EV_A_ (W)w);
		2072	if (expect_false (!ev_is_active (w)))
		2073	return;
		2074
		2075	#if EV_USE_INOTIFY
		2076	infy_del (EV_A_ w);
		2077	#endif
		2078	ev_timer_stop (EV_A_ &w->timer);
		2079
		2080	ev_stop (EV_A_ (W)w);
		2081	}
		2082	#endif
		2083
		2084	#if EV_IDLE_ENABLE
		2085	void
		2086	ev_idle_start (EV_P_ ev_idle *w)
		2087	{
		2088	if (expect_false (ev_is_active (w)))
		2089	return;
		2090
		2091	pri_adjust (EV_A_ (W)w);
		2092
		2093	{
		2094	int active = ++idlecnt [ABSPRI (w)];
		2095
		2096	++idleall;
		2097	ev_start (EV_A_ (W)w, active);
		2098
		2099	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2100	idles [ABSPRI (w)][active - 1] = w;
		2101	}
		2102	}
		2103
		2104	void
		2105	ev_idle_stop (EV_P_ ev_idle *w)
		2106	{
		2107	clear_pending (EV_A_ (W)w);
		2108	if (expect_false (!ev_is_active (w)))
		2109	return;
		2110
		2111	{
		2112	int active = ((W)w)->active;
		2113
		2114	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2115	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2116
		2117	ev_stop (EV_A_ (W)w);
		2118	--idleall;
		2119	}
		2120	}
		2121	#endif
		2122
		2123	void
		2124	ev_prepare_start (EV_P_ ev_prepare *w)
		2125	{
		2126	if (expect_false (ev_is_active (w)))
		2127	return;
		2128
		2129	ev_start (EV_A_ (W)w, ++preparecnt);
		2130	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2131	prepares [preparecnt - 1] = w;
		2132	}
		2133
		2134	void
		2135	ev_prepare_stop (EV_P_ ev_prepare *w)
		2136	{
		2137	clear_pending (EV_A_ (W)w);
		2138	if (expect_false (!ev_is_active (w)))
		2139	return;
		2140
		2141	{
		2142	int active = ((W)w)->active;
		2143	prepares [active - 1] = prepares [--preparecnt];
		2144	((W)prepares [active - 1])->active = active;
		2145	}
		2146
		2147	ev_stop (EV_A_ (W)w);
		2148	}
		2149
		2150	void
		2151	ev_check_start (EV_P_ ev_check *w)
		2152	{
		2153	if (expect_false (ev_is_active (w)))
		2154	return;
		2155
		2156	ev_start (EV_A_ (W)w, ++checkcnt);
		2157	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2158	checks [checkcnt - 1] = w;
		2159	}
		2160
		2161	void
		2162	ev_check_stop (EV_P_ ev_check *w)
		2163	{
		2164	clear_pending (EV_A_ (W)w);
		2165	if (expect_false (!ev_is_active (w)))
		2166	return;
		2167
		2168	{
		2169	int active = ((W)w)->active;
		2170	checks [active - 1] = checks [--checkcnt];
		2171	((W)checks [active - 1])->active = active;
		2172	}
		2173
		2174	ev_stop (EV_A_ (W)w);
		2175	}
		2176
		2177	#if EV_EMBED_ENABLE
		2178	void noinline
		2179	ev_embed_sweep (EV_P_ ev_embed *w)
		2180	{
		2181	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2182	}
		2183
		2184	static void
		2185	embed_cb (EV_P_ ev_io *io, int revents)
		2186	{
		2187	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2188
		2189	if (ev_cb (w))
		2190	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2191	else
		2192	ev_embed_sweep (loop, w);
		2193	}
		2194
		2195	void
		2196	ev_embed_start (EV_P_ ev_embed *w)
		2197	{
		2198	if (expect_false (ev_is_active (w)))
		2199	return;
		2200
		2201	{
		2202	struct ev_loop *loop = w->loop;
		2203	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2204	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2205	}
		2206
		2207	ev_set_priority (&w->io, ev_priority (w));
		2208	ev_io_start (EV_A_ &w->io);
		2209
		2210	ev_start (EV_A_ (W)w, 1);
		2211	}
		2212
		2213	void
		2214	ev_embed_stop (EV_P_ ev_embed *w)
		2215	{
		2216	clear_pending (EV_A_ (W)w);
		2217	if (expect_false (!ev_is_active (w)))
		2218	return;
		2219
		2220	ev_io_stop (EV_A_ &w->io);
		2221
		2222	ev_stop (EV_A_ (W)w);
		2223	}
		2224	#endif
		2225
		2226	#if EV_FORK_ENABLE
		2227	void
		2228	ev_fork_start (EV_P_ ev_fork *w)
		2229	{
		2230	if (expect_false (ev_is_active (w)))
		2231	return;
		2232
		2233	ev_start (EV_A_ (W)w, ++forkcnt);
		2234	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2235	forks [forkcnt - 1] = w;
		2236	}
		2237
		2238	void
		2239	ev_fork_stop (EV_P_ ev_fork *w)
		2240	{
		2241	clear_pending (EV_A_ (W)w);
		2242	if (expect_false (!ev_is_active (w)))
		2243	return;
		2244
		2245	{
		2246	int active = ((W)w)->active;
		2247	forks [active - 1] = forks [--forkcnt];
		2248	((W)forks [active - 1])->active = active;
		2249	}
		2250
		2251	ev_stop (EV_A_ (W)w);
		2252	}
		2253	#endif
		2254
1567	/*****************************************************************************/	2255	/*****************************************************************************/
1568		2256
1569	struct ev_once	2257	struct ev_once
1570	{	2258	{
1571	struct ev_io io;	2259	ev_io io;
1572	struct ev_timer to;	2260	ev_timer to;
1573	void (*cb)(int revents, void *arg);	2261	void (*cb)(int revents, void *arg);
1574	void *arg;	2262	void *arg;
1575	};	2263	};
1576		2264
1577	static void	2265	static void
…		…
1586		2274
1587	cb (revents, arg);	2275	cb (revents, arg);
1588	}	2276	}
1589		2277
1590	static void	2278	static void
1591	once_cb_io (EV_P_ struct ev_io *w, int revents)	2279	once_cb_io (EV_P_ ev_io *w, int revents)
1592	{	2280	{
1593	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2281	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1594	}	2282	}
1595		2283
1596	static void	2284	static void
1597	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2285	once_cb_to (EV_P_ ev_timer *w, int revents)
1598	{	2286	{
1599	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2287	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1600	}	2288	}
1601		2289
1602	void	2290	void
1603	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2291	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1604	{	2292	{
1605	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	2293	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1606		2294
1607	if (!once)	2295	if (expect_false (!once))
		2296	{
1608	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2297	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1609	else	2298	return;
1610	{	2299	}
		2300
1611	once->cb = cb;	2301	once->cb = cb;
1612	once->arg = arg;	2302	once->arg = arg;
1613		2303
1614	ev_init (&once->io, once_cb_io);	2304	ev_init (&once->io, once_cb_io);
1615	if (fd >= 0)	2305	if (fd >= 0)
1616	{	2306	{
1617	ev_io_set (&once->io, fd, events);	2307	ev_io_set (&once->io, fd, events);
1618	ev_io_start (EV_A_ &once->io);	2308	ev_io_start (EV_A_ &once->io);
1619	}	2309	}
1620		2310
1621	ev_init (&once->to, once_cb_to);	2311	ev_init (&once->to, once_cb_to);
1622	if (timeout >= 0.)	2312	if (timeout >= 0.)
1623	{	2313	{
1624	ev_timer_set (&once->to, timeout, 0.);	2314	ev_timer_set (&once->to, timeout, 0.);
1625	ev_timer_start (EV_A_ &once->to);	2315	ev_timer_start (EV_A_ &once->to);
1626	}
1627	}	2316	}
1628	}	2317	}
1629		2318
1630	#ifdef __cplusplus	2319	#ifdef __cplusplus
1631	}	2320	}

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