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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 1.185 by root, Fri Dec 14 18:22:30 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_STAT_ENABLE
		208	# undef EV_USE_INOTIFY
		209	# define EV_USE_INOTIFY 0
		210	#endif
		211
		212	#if EV_USE_INOTIFY
		213	# include <sys/inotify.h>
		214	#endif
		215
		216	#if EV_SELECT_IS_WINSOCKET
		217	# include <winsock.h>
		218	#endif
		219
		220	/**/
		221
		222	/*
		223	* This is used to avoid floating point rounding problems.
		224	* It is added to ev_rt_now when scheduling periodics
		225	* to ensure progress, time-wise, even when rounding
		226	* errors are against us.
		227	* This value is good at least till the year 4000.
		228	* Better solutions welcome.
		229	*/
		230	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
		231
		232	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
		233	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
		234	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
		235
146	#if __GNUC__ >= 3	236	#if __GNUC__ >= 4
147	# define expect(expr,value) __builtin_expect ((expr),(value))	237	# define expect(expr,value) __builtin_expect ((expr),(value))
148	# define inline inline	238	# define noinline __attribute__ ((noinline))
149	#else	239	#else
150	# define expect(expr,value) (expr)	240	# define expect(expr,value) (expr)
151	# define inline static	241	# define noinline
		242	# if __STDC_VERSION__ < 199901L
		243	# define inline
		244	# endif
152	#endif	245	#endif
153		246
154	#define expect_false(expr) expect ((expr) != 0, 0)	247	#define expect_false(expr) expect ((expr) != 0, 0)
155	#define expect_true(expr) expect ((expr) != 0, 1)	248	#define expect_true(expr) expect ((expr) != 0, 1)
		249	#define inline_size static inline
		250
		251	#if EV_MINIMAL
		252	# define inline_speed static noinline
		253	#else
		254	# define inline_speed static inline
		255	#endif
156		256
157	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	257	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
158	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	258	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
159		259
		260	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		261	#define EMPTY2(a,b) /* used to suppress some warnings */
		262
160	typedef struct ev_watcher *W;	263	typedef ev_watcher *W;
161	typedef struct ev_watcher_list *WL;	264	typedef ev_watcher_list *WL;
162	typedef struct ev_watcher_time *WT;	265	typedef ev_watcher_time *WT;
163		266
164	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	267	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
165		268
166	#ifdef WIN32	269	#ifdef _WIN32
167	# include "ev_win32.c"	270	# include "ev_win32.c"
168	#endif	271	#endif
169		272
170	/*****************************************************************************/	273	/*****************************************************************************/
171		274
172	static void (*syserr_cb)(const char *msg);	275	static void (*syserr_cb)(const char *msg);
173		276
		277	void
174	void ev_set_syserr_cb (void (*cb)(const char *msg))	278	ev_set_syserr_cb (void (*cb)(const char *msg))
175	{	279	{
176	syserr_cb = cb;	280	syserr_cb = cb;
177	}	281	}
178		282
179	static void	283	static void noinline
180	syserr (const char *msg)	284	syserr (const char *msg)
181	{	285	{
182	if (!msg)	286	if (!msg)
183	msg = "(libev) system error";	287	msg = "(libev) system error";
184		288
…		…
191	}	295	}
192	}	296	}
193		297
194	static void *(*alloc)(void *ptr, long size);	298	static void *(*alloc)(void *ptr, long size);
195		299
		300	void
196	void ev_set_allocator (void *(*cb)(void *ptr, long size))	301	ev_set_allocator (void *(*cb)(void *ptr, long size))
197	{	302	{
198	alloc = cb;	303	alloc = cb;
199	}	304	}
200		305
201	static void *	306	inline_speed void *
202	ev_realloc (void *ptr, long size)	307	ev_realloc (void *ptr, long size)
203	{	308	{
204	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	309	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
205		310
206	if (!ptr && size)	311	if (!ptr && size)
…		…
220	typedef struct	325	typedef struct
221	{	326	{
222	WL head;	327	WL head;
223	unsigned char events;	328	unsigned char events;
224	unsigned char reify;	329	unsigned char reify;
		330	#if EV_SELECT_IS_WINSOCKET
		331	SOCKET handle;
		332	#endif
225	} ANFD;	333	} ANFD;
226		334
227	typedef struct	335	typedef struct
228	{	336	{
229	W w;	337	W w;
230	int events;	338	int events;
231	} ANPENDING;	339	} ANPENDING;
232		340
		341	#if EV_USE_INOTIFY
		342	typedef struct
		343	{
		344	WL head;
		345	} ANFS;
		346	#endif
		347
233	#if EV_MULTIPLICITY	348	#if EV_MULTIPLICITY
234		349
235	struct ev_loop	350	struct ev_loop
236	{	351	{
237	ev_tstamp ev_rt_now;	352	ev_tstamp ev_rt_now;
		353	#define ev_rt_now ((loop)->ev_rt_now)
238	#define VAR(name,decl) decl;	354	#define VAR(name,decl) decl;
239	#include "ev_vars.h"	355	#include "ev_vars.h"
240	#undef VAR	356	#undef VAR
241	};	357	};
242	#include "ev_wrap.h"	358	#include "ev_wrap.h"
243		359
244	struct ev_loop default_loop_struct;	360	static struct ev_loop default_loop_struct;
245	static struct ev_loop *default_loop;	361	struct ev_loop *ev_default_loop_ptr;
246		362
247	#else	363	#else
248		364
249	ev_tstamp ev_rt_now;	365	ev_tstamp ev_rt_now;
250	#define VAR(name,decl) static decl;	366	#define VAR(name,decl) static decl;
251	#include "ev_vars.h"	367	#include "ev_vars.h"
252	#undef VAR	368	#undef VAR
253		369
254	static int default_loop;	370	static int ev_default_loop_ptr;
255		371
256	#endif	372	#endif
257		373
258	/*****************************************************************************/	374	/*****************************************************************************/
259		375
…		…
269	gettimeofday (&tv, 0);	385	gettimeofday (&tv, 0);
270	return tv.tv_sec + tv.tv_usec * 1e-6;	386	return tv.tv_sec + tv.tv_usec * 1e-6;
271	#endif	387	#endif
272	}	388	}
273		389
274	inline ev_tstamp	390	ev_tstamp inline_size
275	get_clock (void)	391	get_clock (void)
276	{	392	{
277	#if EV_USE_MONOTONIC	393	#if EV_USE_MONOTONIC
278	if (expect_true (have_monotonic))	394	if (expect_true (have_monotonic))
279	{	395	{
…		…
292	{	408	{
293	return ev_rt_now;	409	return ev_rt_now;
294	}	410	}
295	#endif	411	#endif
296		412
297	#define array_roundsize(type,n) ((n) | 4 & ~3)	413	int inline_size
		414	array_nextsize (int elem, int cur, int cnt)
		415	{
		416	int ncur = cur + 1;
		417
		418	do
		419	ncur <<= 1;
		420	while (cnt > ncur);
		421
		422	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		423	if (elem * ncur > 4096)
		424	{
		425	ncur *= elem;
		426	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		427	ncur = ncur - sizeof (void *) * 4;
		428	ncur /= elem;
		429	}
		430
		431	return ncur;
		432	}
		433
		434	static noinline void *
		435	array_realloc (int elem, void *base, int *cur, int cnt)
		436	{
		437	*cur = array_nextsize (elem, *cur, cnt);
		438	return ev_realloc (base, elem * *cur);
		439	}
298		440
299	#define array_needsize(type,base,cur,cnt,init) \	441	#define array_needsize(type,base,cur,cnt,init) \
300	if (expect_false ((cnt) > cur)) \	442	if (expect_false ((cnt) > (cur))) \
301	{ \	443	{ \
302	int newcnt = cur; \	444	int ocur_ = (cur); \
303	do \	445	(base) = (type *)array_realloc \
304	{ \	446	(sizeof (type), (base), &(cur), (cnt)); \
305	newcnt = array_roundsize (type, newcnt << 1); \	447	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	}	448	}
313		449
		450	#if 0
314	#define array_slim(type,stem) \	451	#define array_slim(type,stem) \
315	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	452	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
316	{ \	453	{ \
317	stem ## max = array_roundsize (stem ## cnt >> 1); \	454	stem ## max = array_roundsize (stem ## cnt >> 1); \
318	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	455	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
319	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	456	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
320	}	457	}
321		458	#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		459
327	#define array_free(stem, idx) \	460	#define array_free(stem, idx) \
328	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	461	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
329		462
330	/*****************************************************************************/	463	/*****************************************************************************/
331		464
332	static void	465	void noinline
		466	ev_feed_event (EV_P_ void *w, int revents)
		467	{
		468	W w_ = (W)w;
		469	int pri = ABSPRI (w_);
		470
		471	if (expect_false (w_->pending))
		472	pendings [pri][w_->pending - 1].events |= revents;
		473	else
		474	{
		475	w_->pending = ++pendingcnt [pri];
		476	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		477	pendings [pri][w_->pending - 1].w = w_;
		478	pendings [pri][w_->pending - 1].events = revents;
		479	}
		480	}
		481
		482	void inline_speed
		483	queue_events (EV_P_ W *events, int eventcnt, int type)
		484	{
		485	int i;
		486
		487	for (i = 0; i < eventcnt; ++i)
		488	ev_feed_event (EV_A_ events [i], type);
		489	}
		490
		491	/*****************************************************************************/
		492
		493	void inline_size
333	anfds_init (ANFD *base, int count)	494	anfds_init (ANFD *base, int count)
334	{	495	{
335	while (count--)	496	while (count--)
336	{	497	{
337	base->head = 0;	498	base->head = 0;
…		…
340		501
341	++base;	502	++base;
342	}	503	}
343	}	504	}
344		505
345	void	506	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)	507	fd_event (EV_P_ int fd, int revents)
373	{	508	{
374	ANFD *anfd = anfds + fd;	509	ANFD *anfd = anfds + fd;
375	struct ev_io *w;	510	ev_io *w;
376		511
377	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	512	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
378	{	513	{
379	int ev = w->events & revents;	514	int ev = w->events & revents;
380		515
381	if (ev)	516	if (ev)
382	ev_feed_event (EV_A_ (W)w, ev);	517	ev_feed_event (EV_A_ (W)w, ev);
…		…
384	}	519	}
385		520
386	void	521	void
387	ev_feed_fd_event (EV_P_ int fd, int revents)	522	ev_feed_fd_event (EV_P_ int fd, int revents)
388	{	523	{
		524	if (fd >= 0 && fd < anfdmax)
389	fd_event (EV_A_ fd, revents);	525	fd_event (EV_A_ fd, revents);
390	}	526	}
391		527
392	/*****************************************************************************/	528	void inline_size
393
394	static void
395	fd_reify (EV_P)	529	fd_reify (EV_P)
396	{	530	{
397	int i;	531	int i;
398		532
399	for (i = 0; i < fdchangecnt; ++i)	533	for (i = 0; i < fdchangecnt; ++i)
400	{	534	{
401	int fd = fdchanges [i];	535	int fd = fdchanges [i];
402	ANFD *anfd = anfds + fd;	536	ANFD *anfd = anfds + fd;
403	struct ev_io *w;	537	ev_io *w;
404		538
405	int events = 0;	539	unsigned char events = 0;
406		540
407	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	541	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
408	events |= w->events;	542	events |= (unsigned char)w->events;
409		543
		544	#if EV_SELECT_IS_WINSOCKET
		545	if (events)
		546	{
		547	unsigned long argp;
		548	anfd->handle = _get_osfhandle (fd);
		549	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		550	}
		551	#endif
		552
		553	{
		554	unsigned char o_events = anfd->events;
		555	unsigned char o_reify = anfd->reify;
		556
410	anfd->reify = 0;	557	anfd->reify = 0;
411
412	method_modify (EV_A_ fd, anfd->events, events);
413	anfd->events = events;	558	anfd->events = events;
		559
		560	if (o_events != events || o_reify & EV_IOFDSET)
		561	backend_modify (EV_A_ fd, o_events, events);
		562	}
414	}	563	}
415		564
416	fdchangecnt = 0;	565	fdchangecnt = 0;
417	}	566	}
418		567
419	static void	568	void inline_size
420	fd_change (EV_P_ int fd)	569	fd_change (EV_P_ int fd, int flags)
421	{	570	{
422	if (anfds [fd].reify)	571	unsigned char reify = anfds [fd].reify;
423	return;
424
425	anfds [fd].reify = 1;	572	anfds [fd].reify |= flags;
426		573
		574	if (expect_true (!reify))
		575	{
427	++fdchangecnt;	576	++fdchangecnt;
428	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	577	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
429	fdchanges [fdchangecnt - 1] = fd;	578	fdchanges [fdchangecnt - 1] = fd;
		579	}
430	}	580	}
431		581
432	static void	582	void inline_speed
433	fd_kill (EV_P_ int fd)	583	fd_kill (EV_P_ int fd)
434	{	584	{
435	struct ev_io *w;	585	ev_io *w;
436		586
437	while ((w = (struct ev_io *)anfds [fd].head))	587	while ((w = (ev_io *)anfds [fd].head))
438	{	588	{
439	ev_io_stop (EV_A_ w);	589	ev_io_stop (EV_A_ w);
440	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	590	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
441	}	591	}
442	}	592	}
443		593
444	static int	594	int inline_size
445	fd_valid (int fd)	595	fd_valid (int fd)
446	{	596	{
447	#ifdef WIN32	597	#ifdef _WIN32
448	return !!win32_get_osfhandle (fd);	598	return _get_osfhandle (fd) != -1;
449	#else	599	#else
450	return fcntl (fd, F_GETFD) != -1;	600	return fcntl (fd, F_GETFD) != -1;
451	#endif	601	#endif
452	}	602	}
453		603
454	/* called on EBADF to verify fds */	604	/* called on EBADF to verify fds */
455	static void	605	static void noinline
456	fd_ebadf (EV_P)	606	fd_ebadf (EV_P)
457	{	607	{
458	int fd;	608	int fd;
459		609
460	for (fd = 0; fd < anfdmax; ++fd)	610	for (fd = 0; fd < anfdmax; ++fd)
…		…
462	if (!fd_valid (fd) == -1 && errno == EBADF)	612	if (!fd_valid (fd) == -1 && errno == EBADF)
463	fd_kill (EV_A_ fd);	613	fd_kill (EV_A_ fd);
464	}	614	}
465		615
466	/* called on ENOMEM in select/poll to kill some fds and retry */	616	/* called on ENOMEM in select/poll to kill some fds and retry */
467	static void	617	static void noinline
468	fd_enomem (EV_P)	618	fd_enomem (EV_P)
469	{	619	{
470	int fd;	620	int fd;
471		621
472	for (fd = anfdmax; fd--; )	622	for (fd = anfdmax; fd--; )
…		…
475	fd_kill (EV_A_ fd);	625	fd_kill (EV_A_ fd);
476	return;	626	return;
477	}	627	}
478	}	628	}
479		629
480	/* usually called after fork if method needs to re-arm all fds from scratch */	630	/* usually called after fork if backend needs to re-arm all fds from scratch */
481	static void	631	static void noinline
482	fd_rearm_all (EV_P)	632	fd_rearm_all (EV_P)
483	{	633	{
484	int fd;	634	int fd;
485		635
486	/* this should be highly optimised to not do anything but set a flag */
487	for (fd = 0; fd < anfdmax; ++fd)	636	for (fd = 0; fd < anfdmax; ++fd)
488	if (anfds [fd].events)	637	if (anfds [fd].events)
489	{	638	{
490	anfds [fd].events = 0;	639	anfds [fd].events = 0;
491	fd_change (EV_A_ fd);	640	fd_change (EV_A_ fd, EV_IOFDSET | 1);
492	}	641	}
493	}	642	}
494		643
495	/*****************************************************************************/	644	/*****************************************************************************/
496		645
497	static void	646	void inline_speed
498	upheap (WT *heap, int k)	647	upheap (WT *heap, int k)
499	{	648	{
500	WT w = heap [k];	649	WT w = heap [k];
501		650
502	while (k && heap [k >> 1]->at > w->at)	651	while (k)
503	{	652	{
		653	int p = (k - 1) >> 1;
		654
		655	if (heap [p]->at <= w->at)
		656	break;
		657
504	heap [k] = heap [k >> 1];	658	heap [k] = heap [p];
505	((W)heap [k])->active = k + 1;	659	((W)heap [k])->active = k + 1;
506	k >>= 1;	660	k = p;
507	}	661	}
508		662
509	heap [k] = w;	663	heap [k] = w;
510	((W)heap [k])->active = k + 1;	664	((W)heap [k])->active = k + 1;
511
512	}	665	}
513		666
514	static void	667	void inline_speed
515	downheap (WT *heap, int N, int k)	668	downheap (WT *heap, int N, int k)
516	{	669	{
517	WT w = heap [k];	670	WT w = heap [k];
518		671
519	while (k < (N >> 1))	672	for (;;)
520	{	673	{
521	int j = k << 1;	674	int c = (k << 1) + 1;
522		675
523	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	676	if (c >= N)
524	++j;
525
526	if (w->at <= heap [j]->at)
527	break;	677	break;
528		678
		679	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		680	? 1 : 0;
		681
		682	if (w->at <= heap [c]->at)
		683	break;
		684
529	heap [k] = heap [j];	685	heap [k] = heap [c];
530	((W)heap [k])->active = k + 1;	686	((W)heap [k])->active = k + 1;
		687
531	k = j;	688	k = c;
532	}	689	}
533		690
534	heap [k] = w;	691	heap [k] = w;
535	((W)heap [k])->active = k + 1;	692	((W)heap [k])->active = k + 1;
536	}	693	}
537		694
538	inline void	695	void inline_size
539	adjustheap (WT *heap, int N, int k, ev_tstamp at)	696	adjustheap (WT *heap, int N, int k)
540	{	697	{
541	ev_tstamp old_at = heap [k]->at;	698	upheap (heap, k);
542	heap [k]->at = at;
543
544	if (old_at < at)
545	downheap (heap, N, k);	699	downheap (heap, N, k);
546	else
547	upheap (heap, k);
548	}	700	}
549		701
550	/*****************************************************************************/	702	/*****************************************************************************/
551		703
552	typedef struct	704	typedef struct
…		…
558	static ANSIG *signals;	710	static ANSIG *signals;
559	static int signalmax;	711	static int signalmax;
560		712
561	static int sigpipe [2];	713	static int sigpipe [2];
562	static sig_atomic_t volatile gotsig;	714	static sig_atomic_t volatile gotsig;
563	static struct ev_io sigev;	715	static ev_io sigev;
564		716
565	static void	717	void inline_size
566	signals_init (ANSIG *base, int count)	718	signals_init (ANSIG *base, int count)
567	{	719	{
568	while (count--)	720	while (count--)
569	{	721	{
570	base->head = 0;	722	base->head = 0;
…		…
575	}	727	}
576		728
577	static void	729	static void
578	sighandler (int signum)	730	sighandler (int signum)
579	{	731	{
580	#if WIN32	732	#if _WIN32
581	signal (signum, sighandler);	733	signal (signum, sighandler);
582	#endif	734	#endif
583		735
584	signals [signum - 1].gotsig = 1;	736	signals [signum - 1].gotsig = 1;
585		737
586	if (!gotsig)	738	if (!gotsig)
587	{	739	{
588	int old_errno = errno;	740	int old_errno = errno;
589	gotsig = 1;	741	gotsig = 1;
590	#ifdef WIN32
591	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
592	#else
593	write (sigpipe [1], &signum, 1);	742	write (sigpipe [1], &signum, 1);
594	#endif
595	errno = old_errno;	743	errno = old_errno;
596	}	744	}
597	}	745	}
598		746
599	void	747	void noinline
600	ev_feed_signal_event (EV_P_ int signum)	748	ev_feed_signal_event (EV_P_ int signum)
601	{	749	{
602	WL w;	750	WL w;
603		751
604	#if EV_MULTIPLICITY	752	#if EV_MULTIPLICITY
605	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	753	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
606	#endif	754	#endif
607		755
608	--signum;	756	--signum;
609		757
610	if (signum < 0 || signum >= signalmax)	758	if (signum < 0 || signum >= signalmax)
…		…
615	for (w = signals [signum].head; w; w = w->next)	763	for (w = signals [signum].head; w; w = w->next)
616	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	764	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
617	}	765	}
618		766
619	static void	767	static void
620	sigcb (EV_P_ struct ev_io *iow, int revents)	768	sigcb (EV_P_ ev_io *iow, int revents)
621	{	769	{
622	int signum;	770	int signum;
623		771
624	#ifdef WIN32
625	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
626	#else
627	read (sigpipe [0], &revents, 1);	772	read (sigpipe [0], &revents, 1);
628	#endif
629	gotsig = 0;	773	gotsig = 0;
630		774
631	for (signum = signalmax; signum--; )	775	for (signum = signalmax; signum--; )
632	if (signals [signum].gotsig)	776	if (signals [signum].gotsig)
633	ev_feed_signal_event (EV_A_ signum + 1);	777	ev_feed_signal_event (EV_A_ signum + 1);
634	}	778	}
635		779
636	static void	780	void inline_speed
		781	fd_intern (int fd)
		782	{
		783	#ifdef _WIN32
		784	int arg = 1;
		785	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		786	#else
		787	fcntl (fd, F_SETFD, FD_CLOEXEC);
		788	fcntl (fd, F_SETFL, O_NONBLOCK);
		789	#endif
		790	}
		791
		792	static void noinline
637	siginit (EV_P)	793	siginit (EV_P)
638	{	794	{
639	#ifndef WIN32	795	fd_intern (sigpipe [0]);
640	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	796	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		797
648	ev_io_set (&sigev, sigpipe [0], EV_READ);	798	ev_io_set (&sigev, sigpipe [0], EV_READ);
649	ev_io_start (EV_A_ &sigev);	799	ev_io_start (EV_A_ &sigev);
650	ev_unref (EV_A); /* child watcher should not keep loop alive */	800	ev_unref (EV_A); /* child watcher should not keep loop alive */
651	}	801	}
652		802
653	/*****************************************************************************/	803	/*****************************************************************************/
654		804
655	static struct ev_child *childs [PID_HASHSIZE];	805	static WL childs [EV_PID_HASHSIZE];
656		806
657	#ifndef WIN32	807	#ifndef _WIN32
658		808
659	static struct ev_signal childev;	809	static ev_signal childev;
		810
		811	void inline_speed
		812	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		813	{
		814	ev_child *w;
		815
		816	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		817	if (w->pid == pid || !w->pid)
		818	{
		819	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		820	w->rpid = pid;
		821	w->rstatus = status;
		822	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		823	}
		824	}
660		825
661	#ifndef WCONTINUED	826	#ifndef WCONTINUED
662	# define WCONTINUED 0	827	# define WCONTINUED 0
663	#endif	828	#endif
664		829
665	static void	830	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)	831	childcb (EV_P_ ev_signal *sw, int revents)
682	{	832	{
683	int pid, status;	833	int pid, status;
684		834
		835	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
685	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	836	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
686	{	837	if (!WCONTINUED
		838	|| errno != EINVAL
		839	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		840	return;
		841
687	/* make sure we are called again until all childs have been reaped */	842	/* make sure we are called again until all childs have been reaped */
		843	/* we need to do it this way so that the callback gets called before we continue */
688	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	844	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
689		845
690	child_reap (EV_A_ sw, pid, pid, status);	846	child_reap (EV_A_ sw, pid, pid, status);
		847	if (EV_PID_HASHSIZE > 1)
691	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	848	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
692	}
693	}	849	}
694		850
695	#endif	851	#endif
696		852
697	/*****************************************************************************/	853	/*****************************************************************************/
698		854
		855	#if EV_USE_PORT
		856	# include "ev_port.c"
		857	#endif
699	#if EV_USE_KQUEUE	858	#if EV_USE_KQUEUE
700	# include "ev_kqueue.c"	859	# include "ev_kqueue.c"
701	#endif	860	#endif
702	#if EV_USE_EPOLL	861	#if EV_USE_EPOLL
703	# include "ev_epoll.c"	862	# include "ev_epoll.c"
…		…
720	{	879	{
721	return EV_VERSION_MINOR;	880	return EV_VERSION_MINOR;
722	}	881	}
723		882
724	/* return true if we are running with elevated privileges and should ignore env variables */	883	/* return true if we are running with elevated privileges and should ignore env variables */
725	static int	884	int inline_size
726	enable_secure (void)	885	enable_secure (void)
727	{	886	{
728	#ifdef WIN32	887	#ifdef _WIN32
729	return 0;	888	return 0;
730	#else	889	#else
731	return getuid () != geteuid ()	890	return getuid () != geteuid ()
732	|| getgid () != getegid ();	891	|| getgid () != getegid ();
733	#endif	892	#endif
734	}	893	}
735		894
736	int	895	unsigned int
737	ev_method (EV_P)	896	ev_supported_backends (void)
738	{	897	{
739	return method;	898	unsigned int flags = 0;
740	}
741		899
742	static void	900	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
743	loop_init (EV_P_ int methods)	901	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		902	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		903	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		904	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		905
		906	return flags;
		907	}
		908
		909	unsigned int
		910	ev_recommended_backends (void)
744	{	911	{
745	if (!method)	912	unsigned int flags = ev_supported_backends ();
		913
		914	#ifndef __NetBSD__
		915	/* kqueue is borked on everything but netbsd apparently */
		916	/* it usually doesn't work correctly on anything but sockets and pipes */
		917	flags &= ~EVBACKEND_KQUEUE;
		918	#endif
		919	#ifdef __APPLE__
		920	// flags &= ~EVBACKEND_KQUEUE; for documentation
		921	flags &= ~EVBACKEND_POLL;
		922	#endif
		923
		924	return flags;
		925	}
		926
		927	unsigned int
		928	ev_embeddable_backends (void)
		929	{
		930	return EVBACKEND_EPOLL
		931	| EVBACKEND_KQUEUE
		932	| EVBACKEND_PORT;
		933	}
		934
		935	unsigned int
		936	ev_backend (EV_P)
		937	{
		938	return backend;
		939	}
		940
		941	unsigned int
		942	ev_loop_count (EV_P)
		943	{
		944	return loop_count;
		945	}
		946
		947	static void noinline
		948	loop_init (EV_P_ unsigned int flags)
		949	{
		950	if (!backend)
746	{	951	{
747	#if EV_USE_MONOTONIC	952	#if EV_USE_MONOTONIC
748	{	953	{
749	struct timespec ts;	954	struct timespec ts;
750	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	955	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
755	ev_rt_now = ev_time ();	960	ev_rt_now = ev_time ();
756	mn_now = get_clock ();	961	mn_now = get_clock ();
757	now_floor = mn_now;	962	now_floor = mn_now;
758	rtmn_diff = ev_rt_now - mn_now;	963	rtmn_diff = ev_rt_now - mn_now;
759		964
760	if (methods == EVMETHOD_AUTO)	965	/* pid check not overridable via env */
761	if (!enable_secure () && getenv ("LIBEV_METHODS"))	966	#ifndef _WIN32
		967	if (flags & EVFLAG_FORKCHECK)
		968	curpid = getpid ();
		969	#endif
		970
		971	if (!(flags & EVFLAG_NOENV)
		972	&& !enable_secure ()
		973	&& getenv ("LIBEV_FLAGS"))
762	methods = atoi (getenv ("LIBEV_METHODS"));	974	flags = atoi (getenv ("LIBEV_FLAGS"));
763	else
764	methods = EVMETHOD_ANY;
765		975
766	method = 0;	976	if (!(flags & 0x0000ffffUL))
		977	flags |= ev_recommended_backends ();
		978
		979	backend = 0;
		980	backend_fd = -1;
767	#if EV_USE_WIN32	981	#if EV_USE_INOTIFY
768	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	982	fs_fd = -2;
		983	#endif
		984
		985	#if EV_USE_PORT
		986	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
769	#endif	987	#endif
770	#if EV_USE_KQUEUE	988	#if EV_USE_KQUEUE
771	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	989	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
772	#endif	990	#endif
773	#if EV_USE_EPOLL	991	#if EV_USE_EPOLL
774	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	992	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
775	#endif	993	#endif
776	#if EV_USE_POLL	994	#if EV_USE_POLL
777	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	995	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
778	#endif	996	#endif
779	#if EV_USE_SELECT	997	#if EV_USE_SELECT
780	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	998	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
781	#endif	999	#endif
782		1000
783	ev_init (&sigev, sigcb);	1001	ev_init (&sigev, sigcb);
784	ev_set_priority (&sigev, EV_MAXPRI);	1002	ev_set_priority (&sigev, EV_MAXPRI);
785	}	1003	}
786	}	1004	}
787		1005
788	void	1006	static void noinline
789	loop_destroy (EV_P)	1007	loop_destroy (EV_P)
790	{	1008	{
791	int i;	1009	int i;
792		1010
793	#if EV_USE_WIN32	1011	#if EV_USE_INOTIFY
794	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	1012	if (fs_fd >= 0)
		1013	close (fs_fd);
		1014	#endif
		1015
		1016	if (backend_fd >= 0)
		1017	close (backend_fd);
		1018
		1019	#if EV_USE_PORT
		1020	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
795	#endif	1021	#endif
796	#if EV_USE_KQUEUE	1022	#if EV_USE_KQUEUE
797	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1023	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
798	#endif	1024	#endif
799	#if EV_USE_EPOLL	1025	#if EV_USE_EPOLL
800	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1026	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
801	#endif	1027	#endif
802	#if EV_USE_POLL	1028	#if EV_USE_POLL
803	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1029	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
804	#endif	1030	#endif
805	#if EV_USE_SELECT	1031	#if EV_USE_SELECT
806	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1032	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
807	#endif	1033	#endif
808		1034
809	for (i = NUMPRI; i--; )	1035	for (i = NUMPRI; i--; )
		1036	{
810	array_free (pending, [i]);	1037	array_free (pending, [i]);
		1038	#if EV_IDLE_ENABLE
		1039	array_free (idle, [i]);
		1040	#endif
		1041	}
811		1042
812	/* have to use the microsoft-never-gets-it-right macro */	1043	/* have to use the microsoft-never-gets-it-right macro */
813	array_free_microshit (fdchange);	1044	array_free (fdchange, EMPTY);
814	array_free_microshit (timer);	1045	array_free (timer, EMPTY);
815	#if EV_PERIODICS	1046	#if EV_PERIODIC_ENABLE
816	array_free_microshit (periodic);	1047	array_free (periodic, EMPTY);
817	#endif	1048	#endif
818	array_free_microshit (idle);	1049	array_free (prepare, EMPTY);
819	array_free_microshit (prepare);	1050	array_free (check, EMPTY);
820	array_free_microshit (check);
821		1051
822	method = 0;	1052	backend = 0;
823	}	1053	}
824		1054
825	static void	1055	void inline_size infy_fork (EV_P);
		1056
		1057	void inline_size
826	loop_fork (EV_P)	1058	loop_fork (EV_P)
827	{	1059	{
		1060	#if EV_USE_PORT
		1061	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1062	#endif
		1063	#if EV_USE_KQUEUE
		1064	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1065	#endif
828	#if EV_USE_EPOLL	1066	#if EV_USE_EPOLL
829	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1067	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
830	#endif	1068	#endif
831	#if EV_USE_KQUEUE	1069	#if EV_USE_INOTIFY
832	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1070	infy_fork (EV_A);
833	#endif	1071	#endif
834		1072
835	if (ev_is_active (&sigev))	1073	if (ev_is_active (&sigev))
836	{	1074	{
837	/* default loop */	1075	/* default loop */
…		…
850	postfork = 0;	1088	postfork = 0;
851	}	1089	}
852		1090
853	#if EV_MULTIPLICITY	1091	#if EV_MULTIPLICITY
854	struct ev_loop *	1092	struct ev_loop *
855	ev_loop_new (int methods)	1093	ev_loop_new (unsigned int flags)
856	{	1094	{
857	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1095	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
858		1096
859	memset (loop, 0, sizeof (struct ev_loop));	1097	memset (loop, 0, sizeof (struct ev_loop));
860		1098
861	loop_init (EV_A_ methods);	1099	loop_init (EV_A_ flags);
862		1100
863	if (ev_method (EV_A))	1101	if (ev_backend (EV_A))
864	return loop;	1102	return loop;
865		1103
866	return 0;	1104	return 0;
867	}	1105	}
868		1106
…		…
881		1119
882	#endif	1120	#endif
883		1121
884	#if EV_MULTIPLICITY	1122	#if EV_MULTIPLICITY
885	struct ev_loop *	1123	struct ev_loop *
		1124	ev_default_loop_init (unsigned int flags)
886	#else	1125	#else
887	int	1126	int
		1127	ev_default_loop (unsigned int flags)
888	#endif	1128	#endif
889	ev_default_loop (int methods)
890	{	1129	{
891	if (sigpipe [0] == sigpipe [1])	1130	if (sigpipe [0] == sigpipe [1])
892	if (pipe (sigpipe))	1131	if (pipe (sigpipe))
893	return 0;	1132	return 0;
894		1133
895	if (!default_loop)	1134	if (!ev_default_loop_ptr)
896	{	1135	{
897	#if EV_MULTIPLICITY	1136	#if EV_MULTIPLICITY
898	struct ev_loop *loop = default_loop = &default_loop_struct;	1137	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
899	#else	1138	#else
900	default_loop = 1;	1139	ev_default_loop_ptr = 1;
901	#endif	1140	#endif
902		1141
903	loop_init (EV_A_ methods);	1142	loop_init (EV_A_ flags);
904		1143
905	if (ev_method (EV_A))	1144	if (ev_backend (EV_A))
906	{	1145	{
907	siginit (EV_A);	1146	siginit (EV_A);
908		1147
909	#ifndef WIN32	1148	#ifndef _WIN32
910	ev_signal_init (&childev, childcb, SIGCHLD);	1149	ev_signal_init (&childev, childcb, SIGCHLD);
911	ev_set_priority (&childev, EV_MAXPRI);	1150	ev_set_priority (&childev, EV_MAXPRI);
912	ev_signal_start (EV_A_ &childev);	1151	ev_signal_start (EV_A_ &childev);
913	ev_unref (EV_A); /* child watcher should not keep loop alive */	1152	ev_unref (EV_A); /* child watcher should not keep loop alive */
914	#endif	1153	#endif
915	}	1154	}
916	else	1155	else
917	default_loop = 0;	1156	ev_default_loop_ptr = 0;
918	}	1157	}
919		1158
920	return default_loop;	1159	return ev_default_loop_ptr;
921	}	1160	}
922		1161
923	void	1162	void
924	ev_default_destroy (void)	1163	ev_default_destroy (void)
925	{	1164	{
926	#if EV_MULTIPLICITY	1165	#if EV_MULTIPLICITY
927	struct ev_loop *loop = default_loop;	1166	struct ev_loop *loop = ev_default_loop_ptr;
928	#endif	1167	#endif
929		1168
930	#ifndef WIN32	1169	#ifndef _WIN32
931	ev_ref (EV_A); /* child watcher */	1170	ev_ref (EV_A); /* child watcher */
932	ev_signal_stop (EV_A_ &childev);	1171	ev_signal_stop (EV_A_ &childev);
933	#endif	1172	#endif
934		1173
935	ev_ref (EV_A); /* signal watcher */	1174	ev_ref (EV_A); /* signal watcher */
…		…
943		1182
944	void	1183	void
945	ev_default_fork (void)	1184	ev_default_fork (void)
946	{	1185	{
947	#if EV_MULTIPLICITY	1186	#if EV_MULTIPLICITY
948	struct ev_loop *loop = default_loop;	1187	struct ev_loop *loop = ev_default_loop_ptr;
949	#endif	1188	#endif
950		1189
951	if (method)	1190	if (backend)
952	postfork = 1;	1191	postfork = 1;
953	}	1192	}
954		1193
955	/*****************************************************************************/	1194	/*****************************************************************************/
956		1195
957	static int	1196	void
958	any_pending (EV_P)	1197	ev_invoke (EV_P_ void *w, int revents)
959	{	1198	{
960	int pri;	1199	EV_CB_INVOKE ((W)w, revents);
961
962	for (pri = NUMPRI; pri--; )
963	if (pendingcnt [pri])
964	return 1;
965
966	return 0;
967	}	1200	}
968		1201
969	static void	1202	void inline_speed
970	call_pending (EV_P)	1203	call_pending (EV_P)
971	{	1204	{
972	int pri;	1205	int pri;
973		1206
974	for (pri = NUMPRI; pri--; )	1207	for (pri = NUMPRI; pri--; )
975	while (pendingcnt [pri])	1208	while (pendingcnt [pri])
976	{	1209	{
977	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1210	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
978		1211
979	if (p->w)	1212	if (expect_true (p->w))
980	{	1213	{
		1214	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1215
981	p->w->pending = 0;	1216	p->w->pending = 0;
982	EV_CB_INVOKE (p->w, p->events);	1217	EV_CB_INVOKE (p->w, p->events);
983	}	1218	}
984	}	1219	}
985	}	1220	}
986		1221
987	static void	1222	void inline_size
988	timers_reify (EV_P)	1223	timers_reify (EV_P)
989	{	1224	{
990	while (timercnt && ((WT)timers [0])->at <= mn_now)	1225	while (timercnt && ((WT)timers [0])->at <= mn_now)
991	{	1226	{
992	struct ev_timer *w = timers [0];	1227	ev_timer *w = (ev_timer *)timers [0];
993		1228
994	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1229	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
995		1230
996	/* first reschedule or stop timer */	1231	/* first reschedule or stop timer */
997	if (w->repeat)	1232	if (w->repeat)
998	{	1233	{
999	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1234	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1000		1235
1001	((WT)w)->at += w->repeat;	1236	((WT)w)->at += w->repeat;
1002	if (((WT)w)->at < mn_now)	1237	if (((WT)w)->at < mn_now)
1003	((WT)w)->at = mn_now;	1238	((WT)w)->at = mn_now;
1004		1239
1005	downheap ((WT *)timers, timercnt, 0);	1240	downheap (timers, timercnt, 0);
1006	}	1241	}
1007	else	1242	else
1008	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1243	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1009		1244
1010	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1245	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1011	}	1246	}
1012	}	1247	}
1013		1248
1014	#if EV_PERIODICS	1249	#if EV_PERIODIC_ENABLE
1015	static void	1250	void inline_size
1016	periodics_reify (EV_P)	1251	periodics_reify (EV_P)
1017	{	1252	{
1018	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1253	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1019	{	1254	{
1020	struct ev_periodic *w = periodics [0];	1255	ev_periodic *w = (ev_periodic *)periodics [0];
1021		1256
1022	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1257	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1023		1258
1024	/* first reschedule or stop timer */	1259	/* first reschedule or stop timer */
1025	if (w->reschedule_cb)	1260	if (w->reschedule_cb)
1026	{	1261	{
1027	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1262	((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));	1263	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1030	downheap ((WT *)periodics, periodiccnt, 0);	1264	downheap (periodics, periodiccnt, 0);
1031	}	1265	}
1032	else if (w->interval)	1266	else if (w->interval)
1033	{	1267	{
1034	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1268	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1269	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));	1270	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);	1271	downheap (periodics, periodiccnt, 0);
1037	}	1272	}
1038	else	1273	else
1039	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1274	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1040		1275
1041	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1276	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1042	}	1277	}
1043	}	1278	}
1044		1279
1045	static void	1280	static void noinline
1046	periodics_reschedule (EV_P)	1281	periodics_reschedule (EV_P)
1047	{	1282	{
1048	int i;	1283	int i;
1049		1284
1050	/* adjust periodics after time jump */	1285	/* adjust periodics after time jump */
1051	for (i = 0; i < periodiccnt; ++i)	1286	for (i = 0; i < periodiccnt; ++i)
1052	{	1287	{
1053	struct ev_periodic *w = periodics [i];	1288	ev_periodic *w = (ev_periodic *)periodics [i];
1054		1289
1055	if (w->reschedule_cb)	1290	if (w->reschedule_cb)
1056	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1291	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1057	else if (w->interval)	1292	else if (w->interval)
1058	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1293	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1059	}	1294	}
1060		1295
1061	/* now rebuild the heap */	1296	/* now rebuild the heap */
1062	for (i = periodiccnt >> 1; i--; )	1297	for (i = periodiccnt >> 1; i--; )
1063	downheap ((WT *)periodics, periodiccnt, i);	1298	downheap (periodics, periodiccnt, i);
1064	}	1299	}
1065	#endif	1300	#endif
1066		1301
1067	inline int	1302	#if EV_IDLE_ENABLE
1068	time_update_monotonic (EV_P)	1303	void inline_size
		1304	idle_reify (EV_P)
1069	{	1305	{
		1306	if (expect_false (idleall))
		1307	{
		1308	int pri;
		1309
		1310	for (pri = NUMPRI; pri--; )
		1311	{
		1312	if (pendingcnt [pri])
		1313	break;
		1314
		1315	if (idlecnt [pri])
		1316	{
		1317	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1318	break;
		1319	}
		1320	}
		1321	}
		1322	}
		1323	#endif
		1324
		1325	void inline_speed
		1326	time_update (EV_P_ ev_tstamp max_block)
		1327	{
		1328	int i;
		1329
		1330	#if EV_USE_MONOTONIC
		1331	if (expect_true (have_monotonic))
		1332	{
		1333	ev_tstamp odiff = rtmn_diff;
		1334
1070	mn_now = get_clock ();	1335	mn_now = get_clock ();
1071		1336
		1337	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1338	/* interpolate in the meantime */
1072	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1339	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1073	{	1340	{
1074	ev_rt_now = rtmn_diff + mn_now;	1341	ev_rt_now = rtmn_diff + mn_now;
1075	return 0;	1342	return;
1076	}	1343	}
1077	else	1344
1078	{
1079	now_floor = mn_now;	1345	now_floor = mn_now;
1080	ev_rt_now = ev_time ();	1346	ev_rt_now = ev_time ();
1081	return 1;
1082	}
1083	}
1084		1347
1085	static void	1348	/* loop a few times, before making important decisions.
1086	time_update (EV_P)	1349	* on the choice of "4": one iteration isn't enough,
1087	{	1350	* in case we get preempted during the calls to
1088	int i;	1351	* ev_time and get_clock. a second call is almost guaranteed
1089		1352	* to succeed in that case, though. and looping a few more times
1090	#if EV_USE_MONOTONIC	1353	* doesn't hurt either as we only do this on time-jumps or
1091	if (expect_true (have_monotonic))	1354	* in the unlikely event of having been preempted here.
1092	{	1355	*/
1093	if (time_update_monotonic (EV_A))	1356	for (i = 4; --i; )
1094	{	1357	{
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;	1358	rtmn_diff = ev_rt_now - mn_now;
1100		1359
1101	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1360	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1102	return; /* all is well */	1361	return; /* all is well */
1103		1362
1104	ev_rt_now = ev_time ();	1363	ev_rt_now = ev_time ();
1105	mn_now = get_clock ();	1364	mn_now = get_clock ();
1106	now_floor = mn_now;	1365	now_floor = mn_now;
1107	}	1366	}
1108		1367
1109	# if EV_PERIODICS	1368	# if EV_PERIODIC_ENABLE
		1369	periodics_reschedule (EV_A);
		1370	# endif
		1371	/* no timer adjustment, as the monotonic clock doesn't jump */
		1372	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1373	}
		1374	else
		1375	#endif
		1376	{
		1377	ev_rt_now = ev_time ();
		1378
		1379	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1380	{
		1381	#if EV_PERIODIC_ENABLE
1110	periodics_reschedule (EV_A);	1382	periodics_reschedule (EV_A);
1111	# endif	1383	#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 */	1384	/* adjust timers. this is easy, as the offset is the same for all of them */
1128	for (i = 0; i < timercnt; ++i)	1385	for (i = 0; i < timercnt; ++i)
1129	((WT)timers [i])->at += ev_rt_now - mn_now;	1386	((WT)timers [i])->at += ev_rt_now - mn_now;
1130	}	1387	}
1131		1388
1132	mn_now = ev_rt_now;	1389	mn_now = ev_rt_now;
…		…
1148	static int loop_done;	1405	static int loop_done;
1149		1406
1150	void	1407	void
1151	ev_loop (EV_P_ int flags)	1408	ev_loop (EV_P_ int flags)
1152	{	1409	{
1153	double block;
1154	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1410	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1411	? EVUNLOOP_ONE
		1412	: EVUNLOOP_CANCEL;
		1413
		1414	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1155		1415
1156	do	1416	do
1157	{	1417	{
		1418	#ifndef _WIN32
		1419	if (expect_false (curpid)) /* penalise the forking check even more */
		1420	if (expect_false (getpid () != curpid))
		1421	{
		1422	curpid = getpid ();
		1423	postfork = 1;
		1424	}
		1425	#endif
		1426
		1427	#if EV_FORK_ENABLE
		1428	/* we might have forked, so queue fork handlers */
		1429	if (expect_false (postfork))
		1430	if (forkcnt)
		1431	{
		1432	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1433	call_pending (EV_A);
		1434	}
		1435	#endif
		1436
1158	/* queue check watchers (and execute them) */	1437	/* queue prepare watchers (and execute them) */
1159	if (expect_false (preparecnt))	1438	if (expect_false (preparecnt))
1160	{	1439	{
1161	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1440	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1162	call_pending (EV_A);	1441	call_pending (EV_A);
1163	}	1442	}
1164		1443
		1444	if (expect_false (!activecnt))
		1445	break;
		1446
1165	/* we might have forked, so reify kernel state if necessary */	1447	/* we might have forked, so reify kernel state if necessary */
1166	if (expect_false (postfork))	1448	if (expect_false (postfork))
1167	loop_fork (EV_A);	1449	loop_fork (EV_A);
1168		1450
1169	/* update fd-related kernel structures */	1451	/* update fd-related kernel structures */
1170	fd_reify (EV_A);	1452	fd_reify (EV_A);
1171		1453
1172	/* calculate blocking time */	1454	/* calculate blocking time */
		1455	{
		1456	ev_tstamp block;
1173		1457
1174	/* we only need this for !monotonic clock or timers, but as we basically	1458	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1175	always have timers, we just calculate it always */	1459	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	1460	else
1180	#endif
1181	{	1461	{
1182	ev_rt_now = ev_time ();	1462	/* update time to cancel out callback processing overhead */
1183	mn_now = ev_rt_now;	1463	time_update (EV_A_ 1e100);
1184	}
1185		1464
1186	if (flags & EVLOOP_NONBLOCK || idlecnt)
1187	block = 0.;
1188	else
1189	{
1190	block = MAX_BLOCKTIME;	1465	block = MAX_BLOCKTIME;
1191		1466
1192	if (timercnt)	1467	if (timercnt)
1193	{	1468	{
1194	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1469	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1195	if (block > to) block = to;	1470	if (block > to) block = to;
1196	}	1471	}
1197		1472
1198	#if EV_PERIODICS	1473	#if EV_PERIODIC_ENABLE
1199	if (periodiccnt)	1474	if (periodiccnt)
1200	{	1475	{
1201	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1476	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1202	if (block > to) block = to;	1477	if (block > to) block = to;
1203	}	1478	}
1204	#endif	1479	#endif
1205		1480
1206	if (block < 0.) block = 0.;	1481	if (expect_false (block < 0.)) block = 0.;
1207	}	1482	}
1208		1483
		1484	++loop_count;
1209	method_poll (EV_A_ block);	1485	backend_poll (EV_A_ block);
1210		1486
1211	/* update ev_rt_now, do magic */	1487	/* update ev_rt_now, do magic */
1212	time_update (EV_A);	1488	time_update (EV_A_ block);
		1489	}
1213		1490
1214	/* queue pending timers and reschedule them */	1491	/* queue pending timers and reschedule them */
1215	timers_reify (EV_A); /* relative timers called last */	1492	timers_reify (EV_A); /* relative timers called last */
1216	#if EV_PERIODICS	1493	#if EV_PERIODIC_ENABLE
1217	periodics_reify (EV_A); /* absolute timers called first */	1494	periodics_reify (EV_A); /* absolute timers called first */
1218	#endif	1495	#endif
1219		1496
		1497	#if EV_IDLE_ENABLE
1220	/* queue idle watchers unless io or timers are pending */	1498	/* queue idle watchers unless other events are pending */
1221	if (idlecnt && !any_pending (EV_A))	1499	idle_reify (EV_A);
1222	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1500	#endif
1223		1501
1224	/* queue check watchers, to be executed first */	1502	/* queue check watchers, to be executed first */
1225	if (checkcnt)	1503	if (expect_false (checkcnt))
1226	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1504	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1227		1505
1228	call_pending (EV_A);	1506	call_pending (EV_A);
		1507
1229	}	1508	}
1230	while (activecnt && !loop_done);	1509	while (expect_true (activecnt && !loop_done));
1231		1510
1232	if (loop_done != 2)	1511	if (loop_done == EVUNLOOP_ONE)
1233	loop_done = 0;	1512	loop_done = EVUNLOOP_CANCEL;
1234	}	1513	}
1235		1514
1236	void	1515	void
1237	ev_unloop (EV_P_ int how)	1516	ev_unloop (EV_P_ int how)
1238	{	1517	{
1239	loop_done = how;	1518	loop_done = how;
1240	}	1519	}
1241		1520
1242	/*****************************************************************************/	1521	/*****************************************************************************/
1243		1522
1244	inline void	1523	void inline_size
1245	wlist_add (WL *head, WL elem)	1524	wlist_add (WL *head, WL elem)
1246	{	1525	{
1247	elem->next = *head;	1526	elem->next = *head;
1248	*head = elem;	1527	*head = elem;
1249	}	1528	}
1250		1529
1251	inline void	1530	void inline_size
1252	wlist_del (WL *head, WL elem)	1531	wlist_del (WL *head, WL elem)
1253	{	1532	{
1254	while (*head)	1533	while (*head)
1255	{	1534	{
1256	if (*head == elem)	1535	if (*head == elem)
…		…
1261		1540
1262	head = &(*head)->next;	1541	head = &(*head)->next;
1263	}	1542	}
1264	}	1543	}
1265		1544
1266	inline void	1545	void inline_speed
1267	ev_clear_pending (EV_P_ W w)	1546	clear_pending (EV_P_ W w)
1268	{	1547	{
1269	if (w->pending)	1548	if (w->pending)
1270	{	1549	{
1271	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1550	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1272	w->pending = 0;	1551	w->pending = 0;
1273	}	1552	}
1274	}	1553	}
1275		1554
1276	inline void	1555	int
		1556	ev_clear_pending (EV_P_ void *w)
		1557	{
		1558	W w_ = (W)w;
		1559	int pending = w_->pending;
		1560
		1561	if (expect_true (pending))
		1562	{
		1563	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1564	w_->pending = 0;
		1565	p->w = 0;
		1566	return p->events;
		1567	}
		1568	else
		1569	return 0;
		1570	}
		1571
		1572	void inline_size
		1573	pri_adjust (EV_P_ W w)
		1574	{
		1575	int pri = w->priority;
		1576	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1577	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1578	w->priority = pri;
		1579	}
		1580
		1581	void inline_speed
1277	ev_start (EV_P_ W w, int active)	1582	ev_start (EV_P_ W w, int active)
1278	{	1583	{
1279	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1584	pri_adjust (EV_A_ w);
1280	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1281
1282	w->active = active;	1585	w->active = active;
1283	ev_ref (EV_A);	1586	ev_ref (EV_A);
1284	}	1587	}
1285		1588
1286	inline void	1589	void inline_size
1287	ev_stop (EV_P_ W w)	1590	ev_stop (EV_P_ W w)
1288	{	1591	{
1289	ev_unref (EV_A);	1592	ev_unref (EV_A);
1290	w->active = 0;	1593	w->active = 0;
1291	}	1594	}
1292		1595
1293	/*****************************************************************************/	1596	/*****************************************************************************/
1294		1597
1295	void	1598	void noinline
1296	ev_io_start (EV_P_ struct ev_io *w)	1599	ev_io_start (EV_P_ ev_io *w)
1297	{	1600	{
1298	int fd = w->fd;	1601	int fd = w->fd;
1299		1602
1300	if (ev_is_active (w))	1603	if (expect_false (ev_is_active (w)))
1301	return;	1604	return;
1302		1605
1303	assert (("ev_io_start called with negative fd", fd >= 0));	1606	assert (("ev_io_start called with negative fd", fd >= 0));
1304		1607
1305	ev_start (EV_A_ (W)w, 1);	1608	ev_start (EV_A_ (W)w, 1);
1306	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1609	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1307	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1610	wlist_add (&anfds[fd].head, (WL)w);
1308		1611
1309	fd_change (EV_A_ fd);	1612	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1613	w->events &= ~EV_IOFDSET;
1310	}	1614	}
1311		1615
1312	void	1616	void noinline
1313	ev_io_stop (EV_P_ struct ev_io *w)	1617	ev_io_stop (EV_P_ ev_io *w)
1314	{	1618	{
1315	ev_clear_pending (EV_A_ (W)w);	1619	clear_pending (EV_A_ (W)w);
1316	if (!ev_is_active (w))	1620	if (expect_false (!ev_is_active (w)))
1317	return;	1621	return;
1318		1622
1319	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1623	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1320		1624
1321	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1625	wlist_del (&anfds[w->fd].head, (WL)w);
1322	ev_stop (EV_A_ (W)w);	1626	ev_stop (EV_A_ (W)w);
1323		1627
1324	fd_change (EV_A_ w->fd);	1628	fd_change (EV_A_ w->fd, 1);
1325	}	1629	}
1326		1630
1327	void	1631	void noinline
1328	ev_timer_start (EV_P_ struct ev_timer *w)	1632	ev_timer_start (EV_P_ ev_timer *w)
		1633	{
		1634	if (expect_false (ev_is_active (w)))
		1635	return;
		1636
		1637	((WT)w)->at += mn_now;
		1638
		1639	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
		1640
		1641	ev_start (EV_A_ (W)w, ++timercnt);
		1642	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
		1643	timers [timercnt - 1] = (WT)w;
		1644	upheap (timers, timercnt - 1);
		1645
		1646	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1647	}
		1648
		1649	void noinline
		1650	ev_timer_stop (EV_P_ ev_timer *w)
		1651	{
		1652	clear_pending (EV_A_ (W)w);
		1653	if (expect_false (!ev_is_active (w)))
		1654	return;
		1655
		1656	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
		1657
		1658	{
		1659	int active = ((W)w)->active;
		1660
		1661	if (expect_true (--active < --timercnt))
		1662	{
		1663	timers [active] = timers [timercnt];
		1664	adjustheap (timers, timercnt, active);
		1665	}
		1666	}
		1667
		1668	((WT)w)->at -= mn_now;
		1669
		1670	ev_stop (EV_A_ (W)w);
		1671	}
		1672
		1673	void noinline
		1674	ev_timer_again (EV_P_ ev_timer *w)
1329	{	1675	{
1330	if (ev_is_active (w))	1676	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	{	1677	{
1370	if (w->repeat)	1678	if (w->repeat)
		1679	{
		1680	((WT)w)->at = mn_now + w->repeat;
1371	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1681	adjustheap (timers, timercnt, ((W)w)->active - 1);
		1682	}
1372	else	1683	else
1373	ev_timer_stop (EV_A_ w);	1684	ev_timer_stop (EV_A_ w);
1374	}	1685	}
1375	else if (w->repeat)	1686	else if (w->repeat)
		1687	{
		1688	w->at = w->repeat;
1376	ev_timer_start (EV_A_ w);	1689	ev_timer_start (EV_A_ w);
		1690	}
1377	}	1691	}
1378		1692
1379	#if EV_PERIODICS	1693	#if EV_PERIODIC_ENABLE
1380	void	1694	void noinline
1381	ev_periodic_start (EV_P_ struct ev_periodic *w)	1695	ev_periodic_start (EV_P_ ev_periodic *w)
1382	{	1696	{
1383	if (ev_is_active (w))	1697	if (expect_false (ev_is_active (w)))
1384	return;	1698	return;
1385		1699
1386	if (w->reschedule_cb)	1700	if (w->reschedule_cb)
1387	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1701	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1388	else if (w->interval)	1702	else if (w->interval)
1389	{	1703	{
1390	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1704	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 */	1705	/* 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;	1706	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1393	}	1707	}
		1708	else
		1709	((WT)w)->at = w->offset;
1394		1710
1395	ev_start (EV_A_ (W)w, ++periodiccnt);	1711	ev_start (EV_A_ (W)w, ++periodiccnt);
1396	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1712	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1397	periodics [periodiccnt - 1] = w;	1713	periodics [periodiccnt - 1] = (WT)w;
1398	upheap ((WT *)periodics, periodiccnt - 1);	1714	upheap (periodics, periodiccnt - 1);
1399		1715
1400	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1716	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1401	}	1717	}
1402		1718
1403	void	1719	void noinline
1404	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1720	ev_periodic_stop (EV_P_ ev_periodic *w)
1405	{	1721	{
1406	ev_clear_pending (EV_A_ (W)w);	1722	clear_pending (EV_A_ (W)w);
1407	if (!ev_is_active (w))	1723	if (expect_false (!ev_is_active (w)))
1408	return;	1724	return;
1409		1725
1410	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1726	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1411		1727
1412	if (((W)w)->active < periodiccnt--)	1728	{
		1729	int active = ((W)w)->active;
		1730
		1731	if (expect_true (--active < --periodiccnt))
1413	{	1732	{
1414	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1733	periodics [active] = periodics [periodiccnt];
1415	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1734	adjustheap (periodics, periodiccnt, active);
1416	}	1735	}
		1736	}
1417		1737
1418	ev_stop (EV_A_ (W)w);	1738	ev_stop (EV_A_ (W)w);
1419	}	1739	}
1420		1740
1421	void	1741	void noinline
1422	ev_periodic_again (EV_P_ struct ev_periodic *w)	1742	ev_periodic_again (EV_P_ ev_periodic *w)
1423	{	1743	{
1424	/* TODO: use adjustheap and recalculation */	1744	/* TODO: use adjustheap and recalculation */
1425	ev_periodic_stop (EV_A_ w);	1745	ev_periodic_stop (EV_A_ w);
1426	ev_periodic_start (EV_A_ w);	1746	ev_periodic_start (EV_A_ w);
1427	}	1747	}
1428	#endif	1748	#endif
1429		1749
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	1750	#ifndef SA_RESTART
1497	# define SA_RESTART 0	1751	# define SA_RESTART 0
1498	#endif	1752	#endif
1499		1753
1500	void	1754	void noinline
1501	ev_signal_start (EV_P_ struct ev_signal *w)	1755	ev_signal_start (EV_P_ ev_signal *w)
1502	{	1756	{
1503	#if EV_MULTIPLICITY	1757	#if EV_MULTIPLICITY
1504	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1758	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1505	#endif	1759	#endif
1506	if (ev_is_active (w))	1760	if (expect_false (ev_is_active (w)))
1507	return;	1761	return;
1508		1762
1509	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1763	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1510		1764
		1765	{
		1766	#ifndef _WIN32
		1767	sigset_t full, prev;
		1768	sigfillset (&full);
		1769	sigprocmask (SIG_SETMASK, &full, &prev);
		1770	#endif
		1771
		1772	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1773
		1774	#ifndef _WIN32
		1775	sigprocmask (SIG_SETMASK, &prev, 0);
		1776	#endif
		1777	}
		1778
1511	ev_start (EV_A_ (W)w, 1);	1779	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);	1780	wlist_add (&signals [w->signum - 1].head, (WL)w);
1514		1781
1515	if (!((WL)w)->next)	1782	if (!((WL)w)->next)
1516	{	1783	{
1517	#if WIN32	1784	#if _WIN32
1518	signal (w->signum, sighandler);	1785	signal (w->signum, sighandler);
1519	#else	1786	#else
1520	struct sigaction sa;	1787	struct sigaction sa;
1521	sa.sa_handler = sighandler;	1788	sa.sa_handler = sighandler;
1522	sigfillset (&sa.sa_mask);	1789	sigfillset (&sa.sa_mask);
…		…
1524	sigaction (w->signum, &sa, 0);	1791	sigaction (w->signum, &sa, 0);
1525	#endif	1792	#endif
1526	}	1793	}
1527	}	1794	}
1528		1795
1529	void	1796	void noinline
1530	ev_signal_stop (EV_P_ struct ev_signal *w)	1797	ev_signal_stop (EV_P_ ev_signal *w)
1531	{	1798	{
1532	ev_clear_pending (EV_A_ (W)w);	1799	clear_pending (EV_A_ (W)w);
1533	if (!ev_is_active (w))	1800	if (expect_false (!ev_is_active (w)))
1534	return;	1801	return;
1535		1802
1536	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1803	wlist_del (&signals [w->signum - 1].head, (WL)w);
1537	ev_stop (EV_A_ (W)w);	1804	ev_stop (EV_A_ (W)w);
1538		1805
1539	if (!signals [w->signum - 1].head)	1806	if (!signals [w->signum - 1].head)
1540	signal (w->signum, SIG_DFL);	1807	signal (w->signum, SIG_DFL);
1541	}	1808	}
1542		1809
1543	void	1810	void
1544	ev_child_start (EV_P_ struct ev_child *w)	1811	ev_child_start (EV_P_ ev_child *w)
1545	{	1812	{
1546	#if EV_MULTIPLICITY	1813	#if EV_MULTIPLICITY
1547	assert (("child watchers are only supported in the default loop", loop == default_loop));	1814	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1548	#endif	1815	#endif
1549	if (ev_is_active (w))	1816	if (expect_false (ev_is_active (w)))
1550	return;	1817	return;
1551		1818
1552	ev_start (EV_A_ (W)w, 1);	1819	ev_start (EV_A_ (W)w, 1);
1553	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1820	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1554	}	1821	}
1555		1822
1556	void	1823	void
1557	ev_child_stop (EV_P_ struct ev_child *w)	1824	ev_child_stop (EV_P_ ev_child *w)
1558	{	1825	{
1559	ev_clear_pending (EV_A_ (W)w);	1826	clear_pending (EV_A_ (W)w);
1560	if (!ev_is_active (w))	1827	if (expect_false (!ev_is_active (w)))
1561	return;	1828	return;
1562		1829
1563	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1830	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1564	ev_stop (EV_A_ (W)w);	1831	ev_stop (EV_A_ (W)w);
1565	}	1832	}
1566		1833
		1834	#if EV_STAT_ENABLE
		1835
		1836	# ifdef _WIN32
		1837	# undef lstat
		1838	# define lstat(a,b) _stati64 (a,b)
		1839	# endif
		1840
		1841	#define DEF_STAT_INTERVAL 5.0074891
		1842	#define MIN_STAT_INTERVAL 0.1074891
		1843
		1844	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1845
		1846	#if EV_USE_INOTIFY
		1847	# define EV_INOTIFY_BUFSIZE 8192
		1848
		1849	static void noinline
		1850	infy_add (EV_P_ ev_stat *w)
		1851	{
		1852	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);
		1853
		1854	if (w->wd < 0)
		1855	{
		1856	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1857
		1858	/* monitor some parent directory for speedup hints */
		1859	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1860	{
		1861	char path [4096];
		1862	strcpy (path, w->path);
		1863
		1864	do
		1865	{
		1866	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1867	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1868
		1869	char *pend = strrchr (path, '/');
		1870
		1871	if (!pend)
		1872	break; /* whoops, no '/', complain to your admin */
		1873
		1874	*pend = 0;
		1875	w->wd = inotify_add_watch (fs_fd, path, mask);
		1876	}
		1877	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1878	}
		1879	}
		1880	else
		1881	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1882
		1883	if (w->wd >= 0)
		1884	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1885	}
		1886
		1887	static void noinline
		1888	infy_del (EV_P_ ev_stat *w)
		1889	{
		1890	int slot;
		1891	int wd = w->wd;
		1892
		1893	if (wd < 0)
		1894	return;
		1895
		1896	w->wd = -2;
		1897	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1898	wlist_del (&fs_hash [slot].head, (WL)w);
		1899
		1900	/* remove this watcher, if others are watching it, they will rearm */
		1901	inotify_rm_watch (fs_fd, wd);
		1902	}
		1903
		1904	static void noinline
		1905	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1906	{
		1907	if (slot < 0)
		1908	/* overflow, need to check for all hahs slots */
		1909	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1910	infy_wd (EV_A_ slot, wd, ev);
		1911	else
		1912	{
		1913	WL w_;
		1914
		1915	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1916	{
		1917	ev_stat *w = (ev_stat *)w_;
		1918	w_ = w_->next; /* lets us remove this watcher and all before it */
		1919
		1920	if (w->wd == wd || wd == -1)
		1921	{
		1922	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1923	{
		1924	w->wd = -1;
		1925	infy_add (EV_A_ w); /* re-add, no matter what */
		1926	}
		1927
		1928	stat_timer_cb (EV_A_ &w->timer, 0);
		1929	}
		1930	}
		1931	}
		1932	}
		1933
		1934	static void
		1935	infy_cb (EV_P_ ev_io *w, int revents)
		1936	{
		1937	char buf [EV_INOTIFY_BUFSIZE];
		1938	struct inotify_event *ev = (struct inotify_event *)buf;
		1939	int ofs;
		1940	int len = read (fs_fd, buf, sizeof (buf));
		1941
		1942	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1943	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1944	}
		1945
		1946	void inline_size
		1947	infy_init (EV_P)
		1948	{
		1949	if (fs_fd != -2)
		1950	return;
		1951
		1952	fs_fd = inotify_init ();
		1953
		1954	if (fs_fd >= 0)
		1955	{
		1956	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1957	ev_set_priority (&fs_w, EV_MAXPRI);
		1958	ev_io_start (EV_A_ &fs_w);
		1959	}
		1960	}
		1961
		1962	void inline_size
		1963	infy_fork (EV_P)
		1964	{
		1965	int slot;
		1966
		1967	if (fs_fd < 0)
		1968	return;
		1969
		1970	close (fs_fd);
		1971	fs_fd = inotify_init ();
		1972
		1973	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1974	{
		1975	WL w_ = fs_hash [slot].head;
		1976	fs_hash [slot].head = 0;
		1977
		1978	while (w_)
		1979	{
		1980	ev_stat *w = (ev_stat *)w_;
		1981	w_ = w_->next; /* lets us add this watcher */
		1982
		1983	w->wd = -1;
		1984
		1985	if (fs_fd >= 0)
		1986	infy_add (EV_A_ w); /* re-add, no matter what */
		1987	else
		1988	ev_timer_start (EV_A_ &w->timer);
		1989	}
		1990
		1991	}
		1992	}
		1993
		1994	#endif
		1995
		1996	void
		1997	ev_stat_stat (EV_P_ ev_stat *w)
		1998	{
		1999	if (lstat (w->path, &w->attr) < 0)
		2000	w->attr.st_nlink = 0;
		2001	else if (!w->attr.st_nlink)
		2002	w->attr.st_nlink = 1;
		2003	}
		2004
		2005	static void noinline
		2006	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2007	{
		2008	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2009
		2010	/* we copy this here each the time so that */
		2011	/* prev has the old value when the callback gets invoked */
		2012	w->prev = w->attr;
		2013	ev_stat_stat (EV_A_ w);
		2014
		2015	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2016	if (
		2017	w->prev.st_dev != w->attr.st_dev
		2018	|| w->prev.st_ino != w->attr.st_ino
		2019	|| w->prev.st_mode != w->attr.st_mode
		2020	|| w->prev.st_nlink != w->attr.st_nlink
		2021	|| w->prev.st_uid != w->attr.st_uid
		2022	|| w->prev.st_gid != w->attr.st_gid
		2023	|| w->prev.st_rdev != w->attr.st_rdev
		2024	|| w->prev.st_size != w->attr.st_size
		2025	|| w->prev.st_atime != w->attr.st_atime
		2026	|| w->prev.st_mtime != w->attr.st_mtime
		2027	|| w->prev.st_ctime != w->attr.st_ctime
		2028	) {
		2029	#if EV_USE_INOTIFY
		2030	infy_del (EV_A_ w);
		2031	infy_add (EV_A_ w);
		2032	ev_stat_stat (EV_A_ w); /* avoid race... */
		2033	#endif
		2034
		2035	ev_feed_event (EV_A_ w, EV_STAT);
		2036	}
		2037	}
		2038
		2039	void
		2040	ev_stat_start (EV_P_ ev_stat *w)
		2041	{
		2042	if (expect_false (ev_is_active (w)))
		2043	return;
		2044
		2045	/* since we use memcmp, we need to clear any padding data etc. */
		2046	memset (&w->prev, 0, sizeof (ev_statdata));
		2047	memset (&w->attr, 0, sizeof (ev_statdata));
		2048
		2049	ev_stat_stat (EV_A_ w);
		2050
		2051	if (w->interval < MIN_STAT_INTERVAL)
		2052	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2053
		2054	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2055	ev_set_priority (&w->timer, ev_priority (w));
		2056
		2057	#if EV_USE_INOTIFY
		2058	infy_init (EV_A);
		2059
		2060	if (fs_fd >= 0)
		2061	infy_add (EV_A_ w);
		2062	else
		2063	#endif
		2064	ev_timer_start (EV_A_ &w->timer);
		2065
		2066	ev_start (EV_A_ (W)w, 1);
		2067	}
		2068
		2069	void
		2070	ev_stat_stop (EV_P_ ev_stat *w)
		2071	{
		2072	clear_pending (EV_A_ (W)w);
		2073	if (expect_false (!ev_is_active (w)))
		2074	return;
		2075
		2076	#if EV_USE_INOTIFY
		2077	infy_del (EV_A_ w);
		2078	#endif
		2079	ev_timer_stop (EV_A_ &w->timer);
		2080
		2081	ev_stop (EV_A_ (W)w);
		2082	}
		2083	#endif
		2084
		2085	#if EV_IDLE_ENABLE
		2086	void
		2087	ev_idle_start (EV_P_ ev_idle *w)
		2088	{
		2089	if (expect_false (ev_is_active (w)))
		2090	return;
		2091
		2092	pri_adjust (EV_A_ (W)w);
		2093
		2094	{
		2095	int active = ++idlecnt [ABSPRI (w)];
		2096
		2097	++idleall;
		2098	ev_start (EV_A_ (W)w, active);
		2099
		2100	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2101	idles [ABSPRI (w)][active - 1] = w;
		2102	}
		2103	}
		2104
		2105	void
		2106	ev_idle_stop (EV_P_ ev_idle *w)
		2107	{
		2108	clear_pending (EV_A_ (W)w);
		2109	if (expect_false (!ev_is_active (w)))
		2110	return;
		2111
		2112	{
		2113	int active = ((W)w)->active;
		2114
		2115	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2116	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2117
		2118	ev_stop (EV_A_ (W)w);
		2119	--idleall;
		2120	}
		2121	}
		2122	#endif
		2123
		2124	void
		2125	ev_prepare_start (EV_P_ ev_prepare *w)
		2126	{
		2127	if (expect_false (ev_is_active (w)))
		2128	return;
		2129
		2130	ev_start (EV_A_ (W)w, ++preparecnt);
		2131	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2132	prepares [preparecnt - 1] = w;
		2133	}
		2134
		2135	void
		2136	ev_prepare_stop (EV_P_ ev_prepare *w)
		2137	{
		2138	clear_pending (EV_A_ (W)w);
		2139	if (expect_false (!ev_is_active (w)))
		2140	return;
		2141
		2142	{
		2143	int active = ((W)w)->active;
		2144	prepares [active - 1] = prepares [--preparecnt];
		2145	((W)prepares [active - 1])->active = active;
		2146	}
		2147
		2148	ev_stop (EV_A_ (W)w);
		2149	}
		2150
		2151	void
		2152	ev_check_start (EV_P_ ev_check *w)
		2153	{
		2154	if (expect_false (ev_is_active (w)))
		2155	return;
		2156
		2157	ev_start (EV_A_ (W)w, ++checkcnt);
		2158	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2159	checks [checkcnt - 1] = w;
		2160	}
		2161
		2162	void
		2163	ev_check_stop (EV_P_ ev_check *w)
		2164	{
		2165	clear_pending (EV_A_ (W)w);
		2166	if (expect_false (!ev_is_active (w)))
		2167	return;
		2168
		2169	{
		2170	int active = ((W)w)->active;
		2171	checks [active - 1] = checks [--checkcnt];
		2172	((W)checks [active - 1])->active = active;
		2173	}
		2174
		2175	ev_stop (EV_A_ (W)w);
		2176	}
		2177
		2178	#if EV_EMBED_ENABLE
		2179	void noinline
		2180	ev_embed_sweep (EV_P_ ev_embed *w)
		2181	{
		2182	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2183	}
		2184
		2185	static void
		2186	embed_cb (EV_P_ ev_io *io, int revents)
		2187	{
		2188	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2189
		2190	if (ev_cb (w))
		2191	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2192	else
		2193	ev_embed_sweep (loop, w);
		2194	}
		2195
		2196	void
		2197	ev_embed_start (EV_P_ ev_embed *w)
		2198	{
		2199	if (expect_false (ev_is_active (w)))
		2200	return;
		2201
		2202	{
		2203	struct ev_loop *loop = w->loop;
		2204	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2205	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2206	}
		2207
		2208	ev_set_priority (&w->io, ev_priority (w));
		2209	ev_io_start (EV_A_ &w->io);
		2210
		2211	ev_start (EV_A_ (W)w, 1);
		2212	}
		2213
		2214	void
		2215	ev_embed_stop (EV_P_ ev_embed *w)
		2216	{
		2217	clear_pending (EV_A_ (W)w);
		2218	if (expect_false (!ev_is_active (w)))
		2219	return;
		2220
		2221	ev_io_stop (EV_A_ &w->io);
		2222
		2223	ev_stop (EV_A_ (W)w);
		2224	}
		2225	#endif
		2226
		2227	#if EV_FORK_ENABLE
		2228	void
		2229	ev_fork_start (EV_P_ ev_fork *w)
		2230	{
		2231	if (expect_false (ev_is_active (w)))
		2232	return;
		2233
		2234	ev_start (EV_A_ (W)w, ++forkcnt);
		2235	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2236	forks [forkcnt - 1] = w;
		2237	}
		2238
		2239	void
		2240	ev_fork_stop (EV_P_ ev_fork *w)
		2241	{
		2242	clear_pending (EV_A_ (W)w);
		2243	if (expect_false (!ev_is_active (w)))
		2244	return;
		2245
		2246	{
		2247	int active = ((W)w)->active;
		2248	forks [active - 1] = forks [--forkcnt];
		2249	((W)forks [active - 1])->active = active;
		2250	}
		2251
		2252	ev_stop (EV_A_ (W)w);
		2253	}
		2254	#endif
		2255
1567	/*****************************************************************************/	2256	/*****************************************************************************/
1568		2257
1569	struct ev_once	2258	struct ev_once
1570	{	2259	{
1571	struct ev_io io;	2260	ev_io io;
1572	struct ev_timer to;	2261	ev_timer to;
1573	void (*cb)(int revents, void *arg);	2262	void (*cb)(int revents, void *arg);
1574	void *arg;	2263	void *arg;
1575	};	2264	};
1576		2265
1577	static void	2266	static void
…		…
1586		2275
1587	cb (revents, arg);	2276	cb (revents, arg);
1588	}	2277	}
1589		2278
1590	static void	2279	static void
1591	once_cb_io (EV_P_ struct ev_io *w, int revents)	2280	once_cb_io (EV_P_ ev_io *w, int revents)
1592	{	2281	{
1593	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2282	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1594	}	2283	}
1595		2284
1596	static void	2285	static void
1597	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2286	once_cb_to (EV_P_ ev_timer *w, int revents)
1598	{	2287	{
1599	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2288	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1600	}	2289	}
1601		2290
1602	void	2291	void
1603	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2292	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1604	{	2293	{
1605	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	2294	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1606		2295
1607	if (!once)	2296	if (expect_false (!once))
		2297	{
1608	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2298	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1609	else	2299	return;
1610	{	2300	}
		2301
1611	once->cb = cb;	2302	once->cb = cb;
1612	once->arg = arg;	2303	once->arg = arg;
1613		2304
1614	ev_init (&once->io, once_cb_io);	2305	ev_init (&once->io, once_cb_io);
1615	if (fd >= 0)	2306	if (fd >= 0)
1616	{	2307	{
1617	ev_io_set (&once->io, fd, events);	2308	ev_io_set (&once->io, fd, events);
1618	ev_io_start (EV_A_ &once->io);	2309	ev_io_start (EV_A_ &once->io);
1619	}	2310	}
1620		2311
1621	ev_init (&once->to, once_cb_to);	2312	ev_init (&once->to, once_cb_to);
1622	if (timeout >= 0.)	2313	if (timeout >= 0.)
1623	{	2314	{
1624	ev_timer_set (&once->to, timeout, 0.);	2315	ev_timer_set (&once->to, timeout, 0.);
1625	ev_timer_start (EV_A_ &once->to);	2316	ev_timer_start (EV_A_ &once->to);
1626	}
1627	}	2317	}
1628	}	2318	}
1629		2319
1630	#ifdef __cplusplus	2320	#ifdef __cplusplus
1631	}	2321	}

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