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Comparing libev/ev.c (file contents):
Revision 1.88 by root, Sat Nov 10 04:40:27 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
		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_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
142	#if __GNUC__ >= 3	235	#if __GNUC__ >= 3
143	# define expect(expr,value) __builtin_expect ((expr),(value))	236	# define expect(expr,value) __builtin_expect ((expr),(value))
144	# define inline inline	237	# define noinline __attribute__ ((noinline))
145	#else	238	#else
146	# define expect(expr,value) (expr)	239	# define expect(expr,value) (expr)
147	# define inline static	240	# define noinline
		241	# if __STDC_VERSION__ < 199901L
		242	# define inline
		243	# endif
148	#endif	244	#endif
149		245
150	#define expect_false(expr) expect ((expr) != 0, 0)	246	#define expect_false(expr) expect ((expr) != 0, 0)
151	#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
152		255
153	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	256	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
154	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	257	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
155		258
		259	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		260	#define EMPTY2(a,b) /* used to suppress some warnings */
		261
156	typedef struct ev_watcher *W;	262	typedef ev_watcher *W;
157	typedef struct ev_watcher_list *WL;	263	typedef ev_watcher_list *WL;
158	typedef struct ev_watcher_time *WT;	264	typedef ev_watcher_time *WT;
159		265
160	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	266	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
161		267
		268	#ifdef _WIN32
162	#include "ev_win32.c"	269	# include "ev_win32.c"
		270	#endif
163		271
164	/*****************************************************************************/	272	/*****************************************************************************/
165		273
166	static void (*syserr_cb)(const char *msg);	274	static void (*syserr_cb)(const char *msg);
167		275
		276	void
168	void ev_set_syserr_cb (void (*cb)(const char *msg))	277	ev_set_syserr_cb (void (*cb)(const char *msg))
169	{	278	{
170	syserr_cb = cb;	279	syserr_cb = cb;
171	}	280	}
172		281
173	static void	282	static void noinline
174	syserr (const char *msg)	283	syserr (const char *msg)
175	{	284	{
176	if (!msg)	285	if (!msg)
177	msg = "(libev) system error";	286	msg = "(libev) system error";
178		287
…		…
185	}	294	}
186	}	295	}
187		296
188	static void *(*alloc)(void *ptr, long size);	297	static void *(*alloc)(void *ptr, long size);
189		298
		299	void
190	void ev_set_allocator (void *(*cb)(void *ptr, long size))	300	ev_set_allocator (void *(*cb)(void *ptr, long size))
191	{	301	{
192	alloc = cb;	302	alloc = cb;
193	}	303	}
194		304
195	static void *	305	inline_speed void *
196	ev_realloc (void *ptr, long size)	306	ev_realloc (void *ptr, long size)
197	{	307	{
198	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
199		309
200	if (!ptr && size)	310	if (!ptr && size)
…		…
214	typedef struct	324	typedef struct
215	{	325	{
216	WL head;	326	WL head;
217	unsigned char events;	327	unsigned char events;
218	unsigned char reify;	328	unsigned char reify;
		329	#if EV_SELECT_IS_WINSOCKET
		330	SOCKET handle;
		331	#endif
219	} ANFD;	332	} ANFD;
220		333
221	typedef struct	334	typedef struct
222	{	335	{
223	W w;	336	W w;
224	int events;	337	int events;
225	} ANPENDING;	338	} ANPENDING;
226		339
		340	#if EV_USE_INOTIFY
		341	typedef struct
		342	{
		343	WL head;
		344	} ANFS;
		345	#endif
		346
227	#if EV_MULTIPLICITY	347	#if EV_MULTIPLICITY
228		348
229	struct ev_loop	349	struct ev_loop
230	{	350	{
231	ev_tstamp ev_rt_now;	351	ev_tstamp ev_rt_now;
		352	#define ev_rt_now ((loop)->ev_rt_now)
232	#define VAR(name,decl) decl;	353	#define VAR(name,decl) decl;
233	#include "ev_vars.h"	354	#include "ev_vars.h"
234	#undef VAR	355	#undef VAR
235	};	356	};
236	#include "ev_wrap.h"	357	#include "ev_wrap.h"
237		358
238	struct ev_loop default_loop_struct;	359	static struct ev_loop default_loop_struct;
239	static struct ev_loop *default_loop;	360	struct ev_loop *ev_default_loop_ptr;
240		361
241	#else	362	#else
242		363
243	ev_tstamp ev_rt_now;	364	ev_tstamp ev_rt_now;
244	#define VAR(name,decl) static decl;	365	#define VAR(name,decl) static decl;
245	#include "ev_vars.h"	366	#include "ev_vars.h"
246	#undef VAR	367	#undef VAR
247		368
248	static int default_loop;	369	static int ev_default_loop_ptr;
249		370
250	#endif	371	#endif
251		372
252	/*****************************************************************************/	373	/*****************************************************************************/
253		374
254	inline ev_tstamp	375	ev_tstamp
255	ev_time (void)	376	ev_time (void)
256	{	377	{
257	#if EV_USE_REALTIME	378	#if EV_USE_REALTIME
258	struct timespec ts;	379	struct timespec ts;
259	clock_gettime (CLOCK_REALTIME, &ts);	380	clock_gettime (CLOCK_REALTIME, &ts);
…		…
263	gettimeofday (&tv, 0);	384	gettimeofday (&tv, 0);
264	return tv.tv_sec + tv.tv_usec * 1e-6;	385	return tv.tv_sec + tv.tv_usec * 1e-6;
265	#endif	386	#endif
266	}	387	}
267		388
268	inline ev_tstamp	389	ev_tstamp inline_size
269	get_clock (void)	390	get_clock (void)
270	{	391	{
271	#if EV_USE_MONOTONIC	392	#if EV_USE_MONOTONIC
272	if (expect_true (have_monotonic))	393	if (expect_true (have_monotonic))
273	{	394	{
…		…
286	{	407	{
287	return ev_rt_now;	408	return ev_rt_now;
288	}	409	}
289	#endif	410	#endif
290		411
291	#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	}
292		439
293	#define array_needsize(type,base,cur,cnt,init) \	440	#define array_needsize(type,base,cur,cnt,init) \
294	if (expect_false ((cnt) > cur)) \	441	if (expect_false ((cnt) > (cur))) \
295	{ \	442	{ \
296	int newcnt = cur; \	443	int ocur_ = (cur); \
297	do \	444	(base) = (type *)array_realloc \
298	{ \	445	(sizeof (type), (base), &(cur), (cnt)); \
299	newcnt = array_roundsize (type, newcnt << 1); \	446	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	}	447	}
307		448
		449	#if 0
308	#define array_slim(type,stem) \	450	#define array_slim(type,stem) \
309	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	451	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
310	{ \	452	{ \
311	stem ## max = array_roundsize (stem ## cnt >> 1); \	453	stem ## max = array_roundsize (stem ## cnt >> 1); \
312	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	454	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
313	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	455	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
314	}	456	}
315		457	#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		458
321	#define array_free(stem, idx) \	459	#define array_free(stem, idx) \
322	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;
323		461
324	/*****************************************************************************/	462	/*****************************************************************************/
325		463
326	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
327	anfds_init (ANFD *base, int count)	493	anfds_init (ANFD *base, int count)
328	{	494	{
329	while (count--)	495	while (count--)
330	{	496	{
331	base->head = 0;	497	base->head = 0;
…		…
334		500
335	++base;	501	++base;
336	}	502	}
337	}	503	}
338		504
339	void	505	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)	506	fd_event (EV_P_ int fd, int revents)
367	{	507	{
368	ANFD *anfd = anfds + fd;	508	ANFD *anfd = anfds + fd;
369	struct ev_io *w;	509	ev_io *w;
370		510
371	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)
372	{	512	{
373	int ev = w->events & revents;	513	int ev = w->events & revents;
374		514
375	if (ev)	515	if (ev)
376	ev_feed_event (EV_A_ (W)w, ev);	516	ev_feed_event (EV_A_ (W)w, ev);
…		…
378	}	518	}
379		519
380	void	520	void
381	ev_feed_fd_event (EV_P_ int fd, int revents)	521	ev_feed_fd_event (EV_P_ int fd, int revents)
382	{	522	{
		523	if (fd >= 0 && fd < anfdmax)
383	fd_event (EV_A_ fd, revents);	524	fd_event (EV_A_ fd, revents);
384	}	525	}
385		526
386	/*****************************************************************************/	527	void inline_size
387
388	static void
389	fd_reify (EV_P)	528	fd_reify (EV_P)
390	{	529	{
391	int i;	530	int i;
392		531
393	for (i = 0; i < fdchangecnt; ++i)	532	for (i = 0; i < fdchangecnt; ++i)
394	{	533	{
395	int fd = fdchanges [i];	534	int fd = fdchanges [i];
396	ANFD *anfd = anfds + fd;	535	ANFD *anfd = anfds + fd;
397	struct ev_io *w;	536	ev_io *w;
398		537
399	int events = 0;	538	unsigned char events = 0;
400		539
401	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)
402	events |= w->events;	541	events |= (unsigned char)w->events;
403		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
404	anfd->reify = 0;	556	anfd->reify = 0;
405
406	method_modify (EV_A_ fd, anfd->events, events);
407	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	}
408	}	562	}
409		563
410	fdchangecnt = 0;	564	fdchangecnt = 0;
411	}	565	}
412		566
413	static void	567	void inline_size
414	fd_change (EV_P_ int fd)	568	fd_change (EV_P_ int fd, int flags)
415	{	569	{
416	if (anfds [fd].reify)	570	unsigned char reify = anfds [fd].reify;
417	return;
418
419	anfds [fd].reify = 1;	571	anfds [fd].reify |= flags;
420		572
		573	if (expect_true (!reify))
		574	{
421	++fdchangecnt;	575	++fdchangecnt;
422	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	576	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
423	fdchanges [fdchangecnt - 1] = fd;	577	fdchanges [fdchangecnt - 1] = fd;
		578	}
424	}	579	}
425		580
426	static void	581	void inline_speed
427	fd_kill (EV_P_ int fd)	582	fd_kill (EV_P_ int fd)
428	{	583	{
429	struct ev_io *w;	584	ev_io *w;
430		585
431	while ((w = (struct ev_io *)anfds [fd].head))	586	while ((w = (ev_io *)anfds [fd].head))
432	{	587	{
433	ev_io_stop (EV_A_ w);	588	ev_io_stop (EV_A_ w);
434	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);
435	}	590	}
436	}	591	}
437		592
438	static int	593	int inline_size
439	fd_valid (int fd)	594	fd_valid (int fd)
440	{	595	{
441	#ifdef WIN32	596	#ifdef _WIN32
442	return !!win32_get_osfhandle (fd);	597	return _get_osfhandle (fd) != -1;
443	#else	598	#else
444	return fcntl (fd, F_GETFD) != -1;	599	return fcntl (fd, F_GETFD) != -1;
445	#endif	600	#endif
446	}	601	}
447		602
448	/* called on EBADF to verify fds */	603	/* called on EBADF to verify fds */
449	static void	604	static void noinline
450	fd_ebadf (EV_P)	605	fd_ebadf (EV_P)
451	{	606	{
452	int fd;	607	int fd;
453		608
454	for (fd = 0; fd < anfdmax; ++fd)	609	for (fd = 0; fd < anfdmax; ++fd)
…		…
456	if (!fd_valid (fd) == -1 && errno == EBADF)	611	if (!fd_valid (fd) == -1 && errno == EBADF)
457	fd_kill (EV_A_ fd);	612	fd_kill (EV_A_ fd);
458	}	613	}
459		614
460	/* 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 */
461	static void	616	static void noinline
462	fd_enomem (EV_P)	617	fd_enomem (EV_P)
463	{	618	{
464	int fd;	619	int fd;
465		620
466	for (fd = anfdmax; fd--; )	621	for (fd = anfdmax; fd--; )
…		…
469	fd_kill (EV_A_ fd);	624	fd_kill (EV_A_ fd);
470	return;	625	return;
471	}	626	}
472	}	627	}
473		628
474	/* 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 */
475	static void	630	static void noinline
476	fd_rearm_all (EV_P)	631	fd_rearm_all (EV_P)
477	{	632	{
478	int fd;	633	int fd;
479		634
480	/* this should be highly optimised to not do anything but set a flag */
481	for (fd = 0; fd < anfdmax; ++fd)	635	for (fd = 0; fd < anfdmax; ++fd)
482	if (anfds [fd].events)	636	if (anfds [fd].events)
483	{	637	{
484	anfds [fd].events = 0;	638	anfds [fd].events = 0;
485	fd_change (EV_A_ fd);	639	fd_change (EV_A_ fd, EV_IOFDSET | 1);
486	}	640	}
487	}	641	}
488		642
489	/*****************************************************************************/	643	/*****************************************************************************/
490		644
491	static void	645	void inline_speed
492	upheap (WT *heap, int k)	646	upheap (WT *heap, int k)
493	{	647	{
494	WT w = heap [k];	648	WT w = heap [k];
495		649
496	while (k && heap [k >> 1]->at > w->at)	650	while (k)
497	{	651	{
		652	int p = (k - 1) >> 1;
		653
		654	if (heap [p]->at <= w->at)
		655	break;
		656
498	heap [k] = heap [k >> 1];	657	heap [k] = heap [p];
499	((W)heap [k])->active = k + 1;	658	((W)heap [k])->active = k + 1;
500	k >>= 1;	659	k = p;
501	}	660	}
502		661
503	heap [k] = w;	662	heap [k] = w;
504	((W)heap [k])->active = k + 1;	663	((W)heap [k])->active = k + 1;
505
506	}	664	}
507		665
508	static void	666	void inline_speed
509	downheap (WT *heap, int N, int k)	667	downheap (WT *heap, int N, int k)
510	{	668	{
511	WT w = heap [k];	669	WT w = heap [k];
512		670
513	while (k < (N >> 1))	671	for (;;)
514	{	672	{
515	int j = k << 1;	673	int c = (k << 1) + 1;
516		674
517	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	675	if (c >= N)
518	++j;
519
520	if (w->at <= heap [j]->at)
521	break;	676	break;
522		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
523	heap [k] = heap [j];	684	heap [k] = heap [c];
524	((W)heap [k])->active = k + 1;	685	((W)heap [k])->active = k + 1;
		686
525	k = j;	687	k = c;
526	}	688	}
527		689
528	heap [k] = w;	690	heap [k] = w;
529	((W)heap [k])->active = k + 1;	691	((W)heap [k])->active = k + 1;
530	}	692	}
531		693
532	inline void	694	void inline_size
533	adjustheap (WT *heap, int N, int k, ev_tstamp at)	695	adjustheap (WT *heap, int N, int k)
534	{	696	{
535	ev_tstamp old_at = heap [k]->at;	697	upheap (heap, k);
536	heap [k]->at = at;
537
538	if (old_at < at)
539	downheap (heap, N, k);	698	downheap (heap, N, k);
540	else
541	upheap (heap, k);
542	}	699	}
543		700
544	/*****************************************************************************/	701	/*****************************************************************************/
545		702
546	typedef struct	703	typedef struct
…		…
552	static ANSIG *signals;	709	static ANSIG *signals;
553	static int signalmax;	710	static int signalmax;
554		711
555	static int sigpipe [2];	712	static int sigpipe [2];
556	static sig_atomic_t volatile gotsig;	713	static sig_atomic_t volatile gotsig;
557	static struct ev_io sigev;	714	static ev_io sigev;
558		715
559	static void	716	void inline_size
560	signals_init (ANSIG *base, int count)	717	signals_init (ANSIG *base, int count)
561	{	718	{
562	while (count--)	719	while (count--)
563	{	720	{
564	base->head = 0;	721	base->head = 0;
…		…
569	}	726	}
570		727
571	static void	728	static void
572	sighandler (int signum)	729	sighandler (int signum)
573	{	730	{
574	#if WIN32	731	#if _WIN32
575	signal (signum, sighandler);	732	signal (signum, sighandler);
576	#endif	733	#endif
577		734
578	signals [signum - 1].gotsig = 1;	735	signals [signum - 1].gotsig = 1;
579		736
580	if (!gotsig)	737	if (!gotsig)
581	{	738	{
582	int old_errno = errno;	739	int old_errno = errno;
583	gotsig = 1;	740	gotsig = 1;
584	#ifdef WIN32
585	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
586	#else
587	write (sigpipe [1], &signum, 1);	741	write (sigpipe [1], &signum, 1);
588	#endif
589	errno = old_errno;	742	errno = old_errno;
590	}	743	}
591	}	744	}
592		745
593	void	746	void noinline
594	ev_feed_signal_event (EV_P_ int signum)	747	ev_feed_signal_event (EV_P_ int signum)
595	{	748	{
596	WL w;	749	WL w;
597		750
598	#if EV_MULTIPLICITY	751	#if EV_MULTIPLICITY
599	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));
600	#endif	753	#endif
601		754
602	--signum;	755	--signum;
603		756
604	if (signum < 0 || signum >= signalmax)	757	if (signum < 0 || signum >= signalmax)
…		…
609	for (w = signals [signum].head; w; w = w->next)	762	for (w = signals [signum].head; w; w = w->next)
610	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	763	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
611	}	764	}
612		765
613	static void	766	static void
614	sigcb (EV_P_ struct ev_io *iow, int revents)	767	sigcb (EV_P_ ev_io *iow, int revents)
615	{	768	{
616	int signum;	769	int signum;
617		770
618	#ifdef WIN32
619	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
620	#else
621	read (sigpipe [0], &revents, 1);	771	read (sigpipe [0], &revents, 1);
622	#endif
623	gotsig = 0;	772	gotsig = 0;
624		773
625	for (signum = signalmax; signum--; )	774	for (signum = signalmax; signum--; )
626	if (signals [signum].gotsig)	775	if (signals [signum].gotsig)
627	ev_feed_signal_event (EV_A_ signum + 1);	776	ev_feed_signal_event (EV_A_ signum + 1);
628	}	777	}
629		778
630	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
631	siginit (EV_P)	792	siginit (EV_P)
632	{	793	{
633	#ifndef WIN32	794	fd_intern (sigpipe [0]);
634	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	795	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		796
642	ev_io_set (&sigev, sigpipe [0], EV_READ);	797	ev_io_set (&sigev, sigpipe [0], EV_READ);
643	ev_io_start (EV_A_ &sigev);	798	ev_io_start (EV_A_ &sigev);
644	ev_unref (EV_A); /* child watcher should not keep loop alive */	799	ev_unref (EV_A); /* child watcher should not keep loop alive */
645	}	800	}
646		801
647	/*****************************************************************************/	802	/*****************************************************************************/
648		803
649	static struct ev_child *childs [PID_HASHSIZE];	804	static WL childs [EV_PID_HASHSIZE];
650		805
651	#ifndef WIN32	806	#ifndef _WIN32
652		807
653	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	}
654		824
655	#ifndef WCONTINUED	825	#ifndef WCONTINUED
656	# define WCONTINUED 0	826	# define WCONTINUED 0
657	#endif	827	#endif
658		828
659	static void	829	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)	830	childcb (EV_P_ ev_signal *sw, int revents)
676	{	831	{
677	int pid, status;	832	int pid, status;
678		833
		834	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
679	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	835	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
680	{	836	if (!WCONTINUED
		837	|| errno != EINVAL
		838	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		839	return;
		840
681	/* 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 */
682	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	843	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
683		844
684	child_reap (EV_A_ sw, pid, pid, status);	845	child_reap (EV_A_ sw, pid, pid, status);
		846	if (EV_PID_HASHSIZE > 1)
685	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 */
686	}
687	}	848	}
688		849
689	#endif	850	#endif
690		851
691	/*****************************************************************************/	852	/*****************************************************************************/
692		853
		854	#if EV_USE_PORT
		855	# include "ev_port.c"
		856	#endif
693	#if EV_USE_KQUEUE	857	#if EV_USE_KQUEUE
694	# include "ev_kqueue.c"	858	# include "ev_kqueue.c"
695	#endif	859	#endif
696	#if EV_USE_EPOLL	860	#if EV_USE_EPOLL
697	# include "ev_epoll.c"	861	# include "ev_epoll.c"
…		…
714	{	878	{
715	return EV_VERSION_MINOR;	879	return EV_VERSION_MINOR;
716	}	880	}
717		881
718	/* 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 */
719	static int	883	int inline_size
720	enable_secure (void)	884	enable_secure (void)
721	{	885	{
722	#ifdef WIN32	886	#ifdef _WIN32
723	return 0;	887	return 0;
724	#else	888	#else
725	return getuid () != geteuid ()	889	return getuid () != geteuid ()
726	|| getgid () != getegid ();	890	|| getgid () != getegid ();
727	#endif	891	#endif
728	}	892	}
729		893
730	int	894	unsigned int
731	ev_method (EV_P)	895	ev_supported_backends (void)
732	{	896	{
733	return method;	897	unsigned int flags = 0;
734	}
735		898
736	static void	899	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
737	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)
738	{	910	{
739	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)
740	{	950	{
741	#if EV_USE_MONOTONIC	951	#if EV_USE_MONOTONIC
742	{	952	{
743	struct timespec ts;	953	struct timespec ts;
744	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	954	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
749	ev_rt_now = ev_time ();	959	ev_rt_now = ev_time ();
750	mn_now = get_clock ();	960	mn_now = get_clock ();
751	now_floor = mn_now;	961	now_floor = mn_now;
752	rtmn_diff = ev_rt_now - mn_now;	962	rtmn_diff = ev_rt_now - mn_now;
753		963
754	if (methods == EVMETHOD_AUTO)	964	/* pid check not overridable via env */
755	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"))
756	methods = atoi (getenv ("LIBEV_METHODS"));	973	flags = atoi (getenv ("LIBEV_FLAGS"));
757	else
758	methods = EVMETHOD_ANY;
759		974
760	method = 0;	975	if (!(flags & 0x0000ffffUL))
		976	flags |= ev_recommended_backends ();
		977
		978	backend = 0;
		979	backend_fd = -1;
761	#if EV_USE_WIN32	980	#if EV_USE_INOTIFY
762	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);
763	#endif	986	#endif
764	#if EV_USE_KQUEUE	987	#if EV_USE_KQUEUE
765	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	988	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
766	#endif	989	#endif
767	#if EV_USE_EPOLL	990	#if EV_USE_EPOLL
768	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	991	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
769	#endif	992	#endif
770	#if EV_USE_POLL	993	#if EV_USE_POLL
771	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	994	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
772	#endif	995	#endif
773	#if EV_USE_SELECT	996	#if EV_USE_SELECT
774	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	997	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
775	#endif	998	#endif
776		999
777	ev_init (&sigev, sigcb);	1000	ev_init (&sigev, sigcb);
778	ev_set_priority (&sigev, EV_MAXPRI);	1001	ev_set_priority (&sigev, EV_MAXPRI);
779	}	1002	}
780	}	1003	}
781		1004
782	void	1005	static void noinline
783	loop_destroy (EV_P)	1006	loop_destroy (EV_P)
784	{	1007	{
785	int i;	1008	int i;
786		1009
787	#if EV_USE_WIN32	1010	#if EV_USE_INOTIFY
788	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);
789	#endif	1020	#endif
790	#if EV_USE_KQUEUE	1021	#if EV_USE_KQUEUE
791	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1022	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
792	#endif	1023	#endif
793	#if EV_USE_EPOLL	1024	#if EV_USE_EPOLL
794	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1025	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
795	#endif	1026	#endif
796	#if EV_USE_POLL	1027	#if EV_USE_POLL
797	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1028	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
798	#endif	1029	#endif
799	#if EV_USE_SELECT	1030	#if EV_USE_SELECT
800	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1031	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
801	#endif	1032	#endif
802		1033
803	for (i = NUMPRI; i--; )	1034	for (i = NUMPRI; i--; )
		1035	{
804	array_free (pending, [i]);	1036	array_free (pending, [i]);
		1037	#if EV_IDLE_ENABLE
		1038	array_free (idle, [i]);
		1039	#endif
		1040	}
805		1041
806	/* have to use the microsoft-never-gets-it-right macro */	1042	/* have to use the microsoft-never-gets-it-right macro */
807	array_free_microshit (fdchange);	1043	array_free (fdchange, EMPTY);
808	array_free_microshit (timer);	1044	array_free (timer, EMPTY);
809	array_free_microshit (periodic);	1045	#if EV_PERIODIC_ENABLE
810	array_free_microshit (idle);	1046	array_free (periodic, EMPTY);
811	array_free_microshit (prepare);	1047	#endif
812	array_free_microshit (check);	1048	array_free (prepare, EMPTY);
		1049	array_free (check, EMPTY);
813		1050
814	method = 0;	1051	backend = 0;
815	}	1052	}
816		1053
817	static void	1054	void inline_size infy_fork (EV_P);
		1055
		1056	void inline_size
818	loop_fork (EV_P)	1057	loop_fork (EV_P)
819	{	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
820	#if EV_USE_EPOLL	1065	#if EV_USE_EPOLL
821	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1066	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
822	#endif	1067	#endif
823	#if EV_USE_KQUEUE	1068	#if EV_USE_INOTIFY
824	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1069	infy_fork (EV_A);
825	#endif	1070	#endif
826		1071
827	if (ev_is_active (&sigev))	1072	if (ev_is_active (&sigev))
828	{	1073	{
829	/* default loop */	1074	/* default loop */
…		…
842	postfork = 0;	1087	postfork = 0;
843	}	1088	}
844		1089
845	#if EV_MULTIPLICITY	1090	#if EV_MULTIPLICITY
846	struct ev_loop *	1091	struct ev_loop *
847	ev_loop_new (int methods)	1092	ev_loop_new (unsigned int flags)
848	{	1093	{
849	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));
850		1095
851	memset (loop, 0, sizeof (struct ev_loop));	1096	memset (loop, 0, sizeof (struct ev_loop));
852		1097
853	loop_init (EV_A_ methods);	1098	loop_init (EV_A_ flags);
854		1099
855	if (ev_method (EV_A))	1100	if (ev_backend (EV_A))
856	return loop;	1101	return loop;
857		1102
858	return 0;	1103	return 0;
859	}	1104	}
860		1105
…		…
873		1118
874	#endif	1119	#endif
875		1120
876	#if EV_MULTIPLICITY	1121	#if EV_MULTIPLICITY
877	struct ev_loop *	1122	struct ev_loop *
		1123	ev_default_loop_init (unsigned int flags)
878	#else	1124	#else
879	int	1125	int
		1126	ev_default_loop (unsigned int flags)
880	#endif	1127	#endif
881	ev_default_loop (int methods)
882	{	1128	{
883	if (sigpipe [0] == sigpipe [1])	1129	if (sigpipe [0] == sigpipe [1])
884	if (pipe (sigpipe))	1130	if (pipe (sigpipe))
885	return 0;	1131	return 0;
886		1132
887	if (!default_loop)	1133	if (!ev_default_loop_ptr)
888	{	1134	{
889	#if EV_MULTIPLICITY	1135	#if EV_MULTIPLICITY
890	struct ev_loop *loop = default_loop = &default_loop_struct;	1136	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
891	#else	1137	#else
892	default_loop = 1;	1138	ev_default_loop_ptr = 1;
893	#endif	1139	#endif
894		1140
895	loop_init (EV_A_ methods);	1141	loop_init (EV_A_ flags);
896		1142
897	if (ev_method (EV_A))	1143	if (ev_backend (EV_A))
898	{	1144	{
899	siginit (EV_A);	1145	siginit (EV_A);
900		1146
901	#ifndef WIN32	1147	#ifndef _WIN32
902	ev_signal_init (&childev, childcb, SIGCHLD);	1148	ev_signal_init (&childev, childcb, SIGCHLD);
903	ev_set_priority (&childev, EV_MAXPRI);	1149	ev_set_priority (&childev, EV_MAXPRI);
904	ev_signal_start (EV_A_ &childev);	1150	ev_signal_start (EV_A_ &childev);
905	ev_unref (EV_A); /* child watcher should not keep loop alive */	1151	ev_unref (EV_A); /* child watcher should not keep loop alive */
906	#endif	1152	#endif
907	}	1153	}
908	else	1154	else
909	default_loop = 0;	1155	ev_default_loop_ptr = 0;
910	}	1156	}
911		1157
912	return default_loop;	1158	return ev_default_loop_ptr;
913	}	1159	}
914		1160
915	void	1161	void
916	ev_default_destroy (void)	1162	ev_default_destroy (void)
917	{	1163	{
918	#if EV_MULTIPLICITY	1164	#if EV_MULTIPLICITY
919	struct ev_loop *loop = default_loop;	1165	struct ev_loop *loop = ev_default_loop_ptr;
920	#endif	1166	#endif
921		1167
922	#ifndef WIN32	1168	#ifndef _WIN32
923	ev_ref (EV_A); /* child watcher */	1169	ev_ref (EV_A); /* child watcher */
924	ev_signal_stop (EV_A_ &childev);	1170	ev_signal_stop (EV_A_ &childev);
925	#endif	1171	#endif
926		1172
927	ev_ref (EV_A); /* signal watcher */	1173	ev_ref (EV_A); /* signal watcher */
…		…
935		1181
936	void	1182	void
937	ev_default_fork (void)	1183	ev_default_fork (void)
938	{	1184	{
939	#if EV_MULTIPLICITY	1185	#if EV_MULTIPLICITY
940	struct ev_loop *loop = default_loop;	1186	struct ev_loop *loop = ev_default_loop_ptr;
941	#endif	1187	#endif
942		1188
943	if (method)	1189	if (backend)
944	postfork = 1;	1190	postfork = 1;
945	}	1191	}
946		1192
947	/*****************************************************************************/	1193	/*****************************************************************************/
948		1194
949	static int	1195	void
950	any_pending (EV_P)	1196	ev_invoke (EV_P_ void *w, int revents)
951	{	1197	{
952	int pri;	1198	EV_CB_INVOKE ((W)w, revents);
953
954	for (pri = NUMPRI; pri--; )
955	if (pendingcnt [pri])
956	return 1;
957
958	return 0;
959	}	1199	}
960		1200
961	static void	1201	void inline_speed
962	call_pending (EV_P)	1202	call_pending (EV_P)
963	{	1203	{
964	int pri;	1204	int pri;
965		1205
966	for (pri = NUMPRI; pri--; )	1206	for (pri = NUMPRI; pri--; )
967	while (pendingcnt [pri])	1207	while (pendingcnt [pri])
968	{	1208	{
969	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1209	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
970		1210
971	if (p->w)	1211	if (expect_true (p->w))
972	{	1212	{
		1213	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1214
973	p->w->pending = 0;	1215	p->w->pending = 0;
974	EV_CB_INVOKE (p->w, p->events);	1216	EV_CB_INVOKE (p->w, p->events);
975	}	1217	}
976	}	1218	}
977	}	1219	}
978		1220
979	static void	1221	void inline_size
980	timers_reify (EV_P)	1222	timers_reify (EV_P)
981	{	1223	{
982	while (timercnt && ((WT)timers [0])->at <= mn_now)	1224	while (timercnt && ((WT)timers [0])->at <= mn_now)
983	{	1225	{
984	struct ev_timer *w = timers [0];	1226	ev_timer *w = (ev_timer *)timers [0];
985		1227
986	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1228	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
987		1229
988	/* first reschedule or stop timer */	1230	/* first reschedule or stop timer */
989	if (w->repeat)	1231	if (w->repeat)
990	{	1232	{
991	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.));
		1234
992	((WT)w)->at = mn_now + w->repeat;	1235	((WT)w)->at += w->repeat;
		1236	if (((WT)w)->at < mn_now)
		1237	((WT)w)->at = mn_now;
		1238
993	downheap ((WT *)timers, timercnt, 0);	1239	downheap (timers, timercnt, 0);
994	}	1240	}
995	else	1241	else
996	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1242	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
997		1243
998	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1244	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
999	}	1245	}
1000	}	1246	}
1001		1247
1002	static void	1248	#if EV_PERIODIC_ENABLE
		1249	void inline_size
1003	periodics_reify (EV_P)	1250	periodics_reify (EV_P)
1004	{	1251	{
1005	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1252	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1006	{	1253	{
1007	struct ev_periodic *w = periodics [0];	1254	ev_periodic *w = (ev_periodic *)periodics [0];
1008		1255
1009	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1256	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1010		1257
1011	/* first reschedule or stop timer */	1258	/* first reschedule or stop timer */
1012	if (w->reschedule_cb)	1259	if (w->reschedule_cb)
1013	{	1260	{
1014	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);
1015
1016	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));
1017	downheap ((WT *)periodics, periodiccnt, 0);	1263	downheap (periodics, periodiccnt, 0);
1018	}	1264	}
1019	else if (w->interval)	1265	else if (w->interval)
1020	{	1266	{
1021	((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;
1022	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));
1023	downheap ((WT *)periodics, periodiccnt, 0);	1270	downheap (periodics, periodiccnt, 0);
1024	}	1271	}
1025	else	1272	else
1026	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1273	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1027		1274
1028	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1275	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1029	}	1276	}
1030	}	1277	}
1031		1278
1032	static void	1279	static void noinline
1033	periodics_reschedule (EV_P)	1280	periodics_reschedule (EV_P)
1034	{	1281	{
1035	int i;	1282	int i;
1036		1283
1037	/* adjust periodics after time jump */	1284	/* adjust periodics after time jump */
1038	for (i = 0; i < periodiccnt; ++i)	1285	for (i = 0; i < periodiccnt; ++i)
1039	{	1286	{
1040	struct ev_periodic *w = periodics [i];	1287	ev_periodic *w = (ev_periodic *)periodics [i];
1041		1288
1042	if (w->reschedule_cb)	1289	if (w->reschedule_cb)
1043	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1290	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1044	else if (w->interval)	1291	else if (w->interval)
1045	((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;
1046	}	1293	}
1047		1294
1048	/* now rebuild the heap */	1295	/* now rebuild the heap */
1049	for (i = periodiccnt >> 1; i--; )	1296	for (i = periodiccnt >> 1; i--; )
1050	downheap ((WT *)periodics, periodiccnt, i);	1297	downheap (periodics, periodiccnt, i);
1051	}	1298	}
		1299	#endif
1052		1300
1053	inline int	1301	#if EV_IDLE_ENABLE
1054	time_update_monotonic (EV_P)	1302	void inline_size
		1303	idle_reify (EV_P)
1055	{	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
1056	mn_now = get_clock ();	1334	mn_now = get_clock ();
1057		1335
		1336	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1337	/* interpolate in the meantime */
1058	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1338	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1059	{	1339	{
1060	ev_rt_now = rtmn_diff + mn_now;	1340	ev_rt_now = rtmn_diff + mn_now;
1061	return 0;	1341	return;
1062	}	1342	}
1063	else	1343
1064	{
1065	now_floor = mn_now;	1344	now_floor = mn_now;
1066	ev_rt_now = ev_time ();	1345	ev_rt_now = ev_time ();
1067	return 1;
1068	}
1069	}
1070		1346
1071	static void	1347	/* loop a few times, before making important decisions.
1072	time_update (EV_P)	1348	* on the choice of "4": one iteration isn't enough,
1073	{	1349	* in case we get preempted during the calls to
1074	int i;	1350	* ev_time and get_clock. a second call is almost guaranteed
1075		1351	* to succeed in that case, though. and looping a few more times
1076	#if EV_USE_MONOTONIC	1352	* doesn't hurt either as we only do this on time-jumps or
1077	if (expect_true (have_monotonic))	1353	* in the unlikely event of having been preempted here.
1078	{	1354	*/
1079	if (time_update_monotonic (EV_A))	1355	for (i = 4; --i; )
1080	{	1356	{
1081	ev_tstamp odiff = rtmn_diff;
1082
1083	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1084	{
1085	rtmn_diff = ev_rt_now - mn_now;	1357	rtmn_diff = ev_rt_now - mn_now;
1086		1358
1087	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1359	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1088	return; /* all is well */	1360	return; /* all is well */
1089		1361
1090	ev_rt_now = ev_time ();	1362	ev_rt_now = ev_time ();
1091	mn_now = get_clock ();	1363	mn_now = get_clock ();
1092	now_floor = mn_now;	1364	now_floor = mn_now;
1093	}	1365	}
1094		1366
		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
1095	periodics_reschedule (EV_A);	1381	periodics_reschedule (EV_A);
1096	/* no timer adjustment, as the monotonic clock doesn't jump */
1097	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1098	}
1099	}
1100	else
1101	#endif	1382	#endif
1102	{
1103	ev_rt_now = ev_time ();
1104
1105	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1106	{
1107	periodics_reschedule (EV_A);
1108
1109	/* 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 */
1110	for (i = 0; i < timercnt; ++i)	1384	for (i = 0; i < timercnt; ++i)
1111	((WT)timers [i])->at += ev_rt_now - mn_now;	1385	((WT)timers [i])->at += ev_rt_now - mn_now;
1112	}	1386	}
1113		1387
1114	mn_now = ev_rt_now;	1388	mn_now = ev_rt_now;
…		…
1130	static int loop_done;	1404	static int loop_done;
1131		1405
1132	void	1406	void
1133	ev_loop (EV_P_ int flags)	1407	ev_loop (EV_P_ int flags)
1134	{	1408	{
1135	double block;
1136	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 */
1137		1414
1138	do	1415	do
1139	{	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
1140	/* queue check watchers (and execute them) */	1436	/* queue prepare watchers (and execute them) */
1141	if (expect_false (preparecnt))	1437	if (expect_false (preparecnt))
1142	{	1438	{
1143	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1439	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1144	call_pending (EV_A);	1440	call_pending (EV_A);
1145	}	1441	}
1146		1442
		1443	if (expect_false (!activecnt))
		1444	break;
		1445
1147	/* we might have forked, so reify kernel state if necessary */	1446	/* we might have forked, so reify kernel state if necessary */
1148	if (expect_false (postfork))	1447	if (expect_false (postfork))
1149	loop_fork (EV_A);	1448	loop_fork (EV_A);
1150		1449
1151	/* update fd-related kernel structures */	1450	/* update fd-related kernel structures */
1152	fd_reify (EV_A);	1451	fd_reify (EV_A);
1153		1452
1154	/* calculate blocking time */	1453	/* calculate blocking time */
		1454	{
		1455	ev_tstamp block;
1155		1456
1156	/* we only need this for !monotonic clock or timers, but as we basically	1457	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1157	always have timers, we just calculate it always */	1458	block = 0.; /* do not block at all */
1158	#if EV_USE_MONOTONIC
1159	if (expect_true (have_monotonic))
1160	time_update_monotonic (EV_A);
1161	else	1459	else
1162	#endif
1163	{	1460	{
1164	ev_rt_now = ev_time ();	1461	/* update time to cancel out callback processing overhead */
1165	mn_now = ev_rt_now;	1462	time_update (EV_A_ 1e100);
1166	}
1167		1463
1168	if (flags & EVLOOP_NONBLOCK || idlecnt)
1169	block = 0.;
1170	else
1171	{
1172	block = MAX_BLOCKTIME;	1464	block = MAX_BLOCKTIME;
1173		1465
1174	if (timercnt)	1466	if (timercnt)
1175	{	1467	{
1176	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1468	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1177	if (block > to) block = to;	1469	if (block > to) block = to;
1178	}	1470	}
1179		1471
		1472	#if EV_PERIODIC_ENABLE
1180	if (periodiccnt)	1473	if (periodiccnt)
1181	{	1474	{
1182	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;
1183	if (block > to) block = to;	1476	if (block > to) block = to;
1184	}	1477	}
		1478	#endif
1185		1479
1186	if (block < 0.) block = 0.;	1480	if (expect_false (block < 0.)) block = 0.;
1187	}	1481	}
1188		1482
		1483	++loop_count;
1189	method_poll (EV_A_ block);	1484	backend_poll (EV_A_ block);
1190		1485
1191	/* update ev_rt_now, do magic */	1486	/* update ev_rt_now, do magic */
1192	time_update (EV_A);	1487	time_update (EV_A_ block);
		1488	}
1193		1489
1194	/* queue pending timers and reschedule them */	1490	/* queue pending timers and reschedule them */
1195	timers_reify (EV_A); /* relative timers called last */	1491	timers_reify (EV_A); /* relative timers called last */
		1492	#if EV_PERIODIC_ENABLE
1196	periodics_reify (EV_A); /* absolute timers called first */	1493	periodics_reify (EV_A); /* absolute timers called first */
		1494	#endif
1197		1495
		1496	#if EV_IDLE_ENABLE
1198	/* queue idle watchers unless io or timers are pending */	1497	/* queue idle watchers unless other events are pending */
1199	if (idlecnt && !any_pending (EV_A))	1498	idle_reify (EV_A);
1200	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1499	#endif
1201		1500
1202	/* queue check watchers, to be executed first */	1501	/* queue check watchers, to be executed first */
1203	if (checkcnt)	1502	if (expect_false (checkcnt))
1204	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1503	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1205		1504
1206	call_pending (EV_A);	1505	call_pending (EV_A);
		1506
1207	}	1507	}
1208	while (activecnt && !loop_done);	1508	while (expect_true (activecnt && !loop_done));
1209		1509
1210	if (loop_done != 2)	1510	if (loop_done == EVUNLOOP_ONE)
1211	loop_done = 0;	1511	loop_done = EVUNLOOP_CANCEL;
1212	}	1512	}
1213		1513
1214	void	1514	void
1215	ev_unloop (EV_P_ int how)	1515	ev_unloop (EV_P_ int how)
1216	{	1516	{
1217	loop_done = how;	1517	loop_done = how;
1218	}	1518	}
1219		1519
1220	/*****************************************************************************/	1520	/*****************************************************************************/
1221		1521
1222	inline void	1522	void inline_size
1223	wlist_add (WL *head, WL elem)	1523	wlist_add (WL *head, WL elem)
1224	{	1524	{
1225	elem->next = *head;	1525	elem->next = *head;
1226	*head = elem;	1526	*head = elem;
1227	}	1527	}
1228		1528
1229	inline void	1529	void inline_size
1230	wlist_del (WL *head, WL elem)	1530	wlist_del (WL *head, WL elem)
1231	{	1531	{
1232	while (*head)	1532	while (*head)
1233	{	1533	{
1234	if (*head == elem)	1534	if (*head == elem)
…		…
1239		1539
1240	head = &(*head)->next;	1540	head = &(*head)->next;
1241	}	1541	}
1242	}	1542	}
1243		1543
1244	inline void	1544	void inline_speed
1245	ev_clear_pending (EV_P_ W w)	1545	clear_pending (EV_P_ W w)
1246	{	1546	{
1247	if (w->pending)	1547	if (w->pending)
1248	{	1548	{
1249	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1549	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1250	w->pending = 0;	1550	w->pending = 0;
1251	}	1551	}
1252	}	1552	}
1253		1553
1254	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
1255	ev_start (EV_P_ W w, int active)	1581	ev_start (EV_P_ W w, int active)
1256	{	1582	{
1257	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1583	pri_adjust (EV_A_ w);
1258	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1259
1260	w->active = active;	1584	w->active = active;
1261	ev_ref (EV_A);	1585	ev_ref (EV_A);
1262	}	1586	}
1263		1587
1264	inline void	1588	void inline_size
1265	ev_stop (EV_P_ W w)	1589	ev_stop (EV_P_ W w)
1266	{	1590	{
1267	ev_unref (EV_A);	1591	ev_unref (EV_A);
1268	w->active = 0;	1592	w->active = 0;
1269	}	1593	}
1270		1594
1271	/*****************************************************************************/	1595	/*****************************************************************************/
1272		1596
1273	void	1597	void noinline
1274	ev_io_start (EV_P_ struct ev_io *w)	1598	ev_io_start (EV_P_ ev_io *w)
1275	{	1599	{
1276	int fd = w->fd;	1600	int fd = w->fd;
1277		1601
1278	if (ev_is_active (w))	1602	if (expect_false (ev_is_active (w)))
1279	return;	1603	return;
1280		1604
1281	assert (("ev_io_start called with negative fd", fd >= 0));	1605	assert (("ev_io_start called with negative fd", fd >= 0));
1282		1606
1283	ev_start (EV_A_ (W)w, 1);	1607	ev_start (EV_A_ (W)w, 1);
1284	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1608	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1285	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1609	wlist_add (&anfds[fd].head, (WL)w);
1286		1610
1287	fd_change (EV_A_ fd);	1611	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1612	w->events &= ~EV_IOFDSET;
1288	}	1613	}
1289		1614
1290	void	1615	void noinline
1291	ev_io_stop (EV_P_ struct ev_io *w)	1616	ev_io_stop (EV_P_ ev_io *w)
1292	{	1617	{
1293	ev_clear_pending (EV_A_ (W)w);	1618	clear_pending (EV_A_ (W)w);
1294	if (!ev_is_active (w))	1619	if (expect_false (!ev_is_active (w)))
1295	return;	1620	return;
1296		1621
		1622	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1623
1297	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1624	wlist_del (&anfds[w->fd].head, (WL)w);
1298	ev_stop (EV_A_ (W)w);	1625	ev_stop (EV_A_ (W)w);
1299		1626
1300	fd_change (EV_A_ w->fd);	1627	fd_change (EV_A_ w->fd, 1);
1301	}	1628	}
1302		1629
1303	void	1630	void noinline
1304	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)
1305	{	1674	{
1306	if (ev_is_active (w))	1675	if (ev_is_active (w))
1307	return;
1308
1309	((WT)w)->at += mn_now;
1310
1311	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1312
1313	ev_start (EV_A_ (W)w, ++timercnt);
1314	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1315	timers [timercnt - 1] = w;
1316	upheap ((WT *)timers, timercnt - 1);
1317
1318	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1319	}
1320
1321	void
1322	ev_timer_stop (EV_P_ struct ev_timer *w)
1323	{
1324	ev_clear_pending (EV_A_ (W)w);
1325	if (!ev_is_active (w))
1326	return;
1327
1328	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1329
1330	if (((W)w)->active < timercnt--)
1331	{
1332	timers [((W)w)->active - 1] = timers [timercnt];
1333	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1334	}
1335
1336	((WT)w)->at = w->repeat;
1337
1338	ev_stop (EV_A_ (W)w);
1339	}
1340
1341	void
1342	ev_timer_again (EV_P_ struct ev_timer *w)
1343	{
1344	if (ev_is_active (w))
1345	{	1676	{
1346	if (w->repeat)	1677	if (w->repeat)
		1678	{
		1679	((WT)w)->at = mn_now + w->repeat;
1347	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1680	adjustheap (timers, timercnt, ((W)w)->active - 1);
		1681	}
1348	else	1682	else
1349	ev_timer_stop (EV_A_ w);	1683	ev_timer_stop (EV_A_ w);
1350	}	1684	}
1351	else if (w->repeat)	1685	else if (w->repeat)
		1686	{
		1687	w->at = w->repeat;
1352	ev_timer_start (EV_A_ w);	1688	ev_timer_start (EV_A_ w);
		1689	}
1353	}	1690	}
1354		1691
1355	void	1692	#if EV_PERIODIC_ENABLE
		1693	void noinline
1356	ev_periodic_start (EV_P_ struct ev_periodic *w)	1694	ev_periodic_start (EV_P_ ev_periodic *w)
1357	{	1695	{
1358	if (ev_is_active (w))	1696	if (expect_false (ev_is_active (w)))
1359	return;	1697	return;
1360		1698
1361	if (w->reschedule_cb)	1699	if (w->reschedule_cb)
1362	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1700	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1363	else if (w->interval)	1701	else if (w->interval)
1364	{	1702	{
1365	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.));
1366	/* 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 */
1367	((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;
1368	}	1706	}
		1707	else
		1708	((WT)w)->at = w->offset;
1369		1709
1370	ev_start (EV_A_ (W)w, ++periodiccnt);	1710	ev_start (EV_A_ (W)w, ++periodiccnt);
1371	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1711	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1372	periodics [periodiccnt - 1] = w;	1712	periodics [periodiccnt - 1] = (WT)w;
1373	upheap ((WT *)periodics, periodiccnt - 1);	1713	upheap (periodics, periodiccnt - 1);
1374		1714
1375	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1715	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1376	}	1716	}
1377		1717
1378	void	1718	void noinline
1379	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1719	ev_periodic_stop (EV_P_ ev_periodic *w)
1380	{	1720	{
1381	ev_clear_pending (EV_A_ (W)w);	1721	clear_pending (EV_A_ (W)w);
1382	if (!ev_is_active (w))	1722	if (expect_false (!ev_is_active (w)))
1383	return;	1723	return;
1384		1724
1385	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1725	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1386		1726
1387	if (((W)w)->active < periodiccnt--)	1727	{
		1728	int active = ((W)w)->active;
		1729
		1730	if (expect_true (--active < --periodiccnt))
1388	{	1731	{
1389	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1732	periodics [active] = periodics [periodiccnt];
1390	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1733	adjustheap (periodics, periodiccnt, active);
1391	}	1734	}
		1735	}
1392		1736
1393	ev_stop (EV_A_ (W)w);	1737	ev_stop (EV_A_ (W)w);
1394	}	1738	}
1395		1739
1396	void	1740	void noinline
1397	ev_periodic_again (EV_P_ struct ev_periodic *w)	1741	ev_periodic_again (EV_P_ ev_periodic *w)
1398	{	1742	{
1399	/* TODO: use adjustheap and recalculation */	1743	/* TODO: use adjustheap and recalculation */
1400	ev_periodic_stop (EV_A_ w);	1744	ev_periodic_stop (EV_A_ w);
1401	ev_periodic_start (EV_A_ w);	1745	ev_periodic_start (EV_A_ w);
1402	}	1746	}
1403		1747	#endif
1404	void
1405	ev_idle_start (EV_P_ struct ev_idle *w)
1406	{
1407	if (ev_is_active (w))
1408	return;
1409
1410	ev_start (EV_A_ (W)w, ++idlecnt);
1411	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1412	idles [idlecnt - 1] = w;
1413	}
1414
1415	void
1416	ev_idle_stop (EV_P_ struct ev_idle *w)
1417	{
1418	ev_clear_pending (EV_A_ (W)w);
1419	if (ev_is_active (w))
1420	return;
1421
1422	idles [((W)w)->active - 1] = idles [--idlecnt];
1423	ev_stop (EV_A_ (W)w);
1424	}
1425
1426	void
1427	ev_prepare_start (EV_P_ struct ev_prepare *w)
1428	{
1429	if (ev_is_active (w))
1430	return;
1431
1432	ev_start (EV_A_ (W)w, ++preparecnt);
1433	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1434	prepares [preparecnt - 1] = w;
1435	}
1436
1437	void
1438	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1439	{
1440	ev_clear_pending (EV_A_ (W)w);
1441	if (ev_is_active (w))
1442	return;
1443
1444	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1445	ev_stop (EV_A_ (W)w);
1446	}
1447
1448	void
1449	ev_check_start (EV_P_ struct ev_check *w)
1450	{
1451	if (ev_is_active (w))
1452	return;
1453
1454	ev_start (EV_A_ (W)w, ++checkcnt);
1455	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1456	checks [checkcnt - 1] = w;
1457	}
1458
1459	void
1460	ev_check_stop (EV_P_ struct ev_check *w)
1461	{
1462	ev_clear_pending (EV_A_ (W)w);
1463	if (ev_is_active (w))
1464	return;
1465
1466	checks [((W)w)->active - 1] = checks [--checkcnt];
1467	ev_stop (EV_A_ (W)w);
1468	}
1469		1748
1470	#ifndef SA_RESTART	1749	#ifndef SA_RESTART
1471	# define SA_RESTART 0	1750	# define SA_RESTART 0
1472	#endif	1751	#endif
1473		1752
1474	void	1753	void noinline
1475	ev_signal_start (EV_P_ struct ev_signal *w)	1754	ev_signal_start (EV_P_ ev_signal *w)
1476	{	1755	{
1477	#if EV_MULTIPLICITY	1756	#if EV_MULTIPLICITY
1478	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));
1479	#endif	1758	#endif
1480	if (ev_is_active (w))	1759	if (expect_false (ev_is_active (w)))
1481	return;	1760	return;
1482		1761
1483	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));
1484		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
1485	ev_start (EV_A_ (W)w, 1);	1778	ev_start (EV_A_ (W)w, 1);
1486	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1487	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1779	wlist_add (&signals [w->signum - 1].head, (WL)w);
1488		1780
1489	if (!((WL)w)->next)	1781	if (!((WL)w)->next)
1490	{	1782	{
1491	#if WIN32	1783	#if _WIN32
1492	signal (w->signum, sighandler);	1784	signal (w->signum, sighandler);
1493	#else	1785	#else
1494	struct sigaction sa;	1786	struct sigaction sa;
1495	sa.sa_handler = sighandler;	1787	sa.sa_handler = sighandler;
1496	sigfillset (&sa.sa_mask);	1788	sigfillset (&sa.sa_mask);
…		…
1498	sigaction (w->signum, &sa, 0);	1790	sigaction (w->signum, &sa, 0);
1499	#endif	1791	#endif
1500	}	1792	}
1501	}	1793	}
1502		1794
1503	void	1795	void noinline
1504	ev_signal_stop (EV_P_ struct ev_signal *w)	1796	ev_signal_stop (EV_P_ ev_signal *w)
1505	{	1797	{
1506	ev_clear_pending (EV_A_ (W)w);	1798	clear_pending (EV_A_ (W)w);
1507	if (!ev_is_active (w))	1799	if (expect_false (!ev_is_active (w)))
1508	return;	1800	return;
1509		1801
1510	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1802	wlist_del (&signals [w->signum - 1].head, (WL)w);
1511	ev_stop (EV_A_ (W)w);	1803	ev_stop (EV_A_ (W)w);
1512		1804
1513	if (!signals [w->signum - 1].head)	1805	if (!signals [w->signum - 1].head)
1514	signal (w->signum, SIG_DFL);	1806	signal (w->signum, SIG_DFL);
1515	}	1807	}
1516		1808
1517	void	1809	void
1518	ev_child_start (EV_P_ struct ev_child *w)	1810	ev_child_start (EV_P_ ev_child *w)
1519	{	1811	{
1520	#if EV_MULTIPLICITY	1812	#if EV_MULTIPLICITY
1521	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));
1522	#endif	1814	#endif
1523	if (ev_is_active (w))	1815	if (expect_false (ev_is_active (w)))
1524	return;	1816	return;
1525		1817
1526	ev_start (EV_A_ (W)w, 1);	1818	ev_start (EV_A_ (W)w, 1);
1527	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1819	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1528	}	1820	}
1529		1821
1530	void	1822	void
1531	ev_child_stop (EV_P_ struct ev_child *w)	1823	ev_child_stop (EV_P_ ev_child *w)
1532	{	1824	{
1533	ev_clear_pending (EV_A_ (W)w);	1825	clear_pending (EV_A_ (W)w);
1534	if (ev_is_active (w))	1826	if (expect_false (!ev_is_active (w)))
1535	return;	1827	return;
1536		1828
1537	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1829	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1538	ev_stop (EV_A_ (W)w);	1830	ev_stop (EV_A_ (W)w);
1539	}	1831	}
1540		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
1541	/*****************************************************************************/	2255	/*****************************************************************************/
1542		2256
1543	struct ev_once	2257	struct ev_once
1544	{	2258	{
1545	struct ev_io io;	2259	ev_io io;
1546	struct ev_timer to;	2260	ev_timer to;
1547	void (*cb)(int revents, void *arg);	2261	void (*cb)(int revents, void *arg);
1548	void *arg;	2262	void *arg;
1549	};	2263	};
1550		2264
1551	static void	2265	static void
…		…
1560		2274
1561	cb (revents, arg);	2275	cb (revents, arg);
1562	}	2276	}
1563		2277
1564	static void	2278	static void
1565	once_cb_io (EV_P_ struct ev_io *w, int revents)	2279	once_cb_io (EV_P_ ev_io *w, int revents)
1566	{	2280	{
1567	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);
1568	}	2282	}
1569		2283
1570	static void	2284	static void
1571	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2285	once_cb_to (EV_P_ ev_timer *w, int revents)
1572	{	2286	{
1573	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);
1574	}	2288	}
1575		2289
1576	void	2290	void
1577	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)
1578	{	2292	{
1579	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));
1580		2294
1581	if (!once)	2295	if (expect_false (!once))
		2296	{
1582	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2297	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1583	else	2298	return;
1584	{	2299	}
		2300
1585	once->cb = cb;	2301	once->cb = cb;
1586	once->arg = arg;	2302	once->arg = arg;
1587		2303
1588	ev_init (&once->io, once_cb_io);	2304	ev_init (&once->io, once_cb_io);
1589	if (fd >= 0)	2305	if (fd >= 0)
1590	{	2306	{
1591	ev_io_set (&once->io, fd, events);	2307	ev_io_set (&once->io, fd, events);
1592	ev_io_start (EV_A_ &once->io);	2308	ev_io_start (EV_A_ &once->io);
1593	}	2309	}
1594		2310
1595	ev_init (&once->to, once_cb_to);	2311	ev_init (&once->to, once_cb_to);
1596	if (timeout >= 0.)	2312	if (timeout >= 0.)
1597	{	2313	{
1598	ev_timer_set (&once->to, timeout, 0.);	2314	ev_timer_set (&once->to, timeout, 0.);
1599	ev_timer_start (EV_A_ &once->to);	2315	ev_timer_start (EV_A_ &once->to);
1600	}
1601	}	2316	}
1602	}	2317	}
1603		2318
1604	#ifdef __cplusplus	2319	#ifdef __cplusplus
1605	}	2320	}

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