ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.107 by root, Mon Nov 12 01:20:25 2007 UTC vs.
Revision 1.196 by root, Sat Dec 22 12:43:28 2007 UTC

…		…
32	#ifdef __cplusplus	32	#ifdef __cplusplus
33	extern "C" {	33	extern "C" {
34	#endif	34	#endif
35		35
36	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
37	# include "config.h"	40	# include "config.h"
		41	# endif
38		42
39	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
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_NANOSLEEP
		60	# if HAVE_NANOSLEEP
49	# define EV_USE_SELECT 1	61	# define EV_USE_NANOSLEEP 1
		62	# else
		63	# define EV_USE_NANOSLEEP 0
		64	# endif
50	# endif	65	# endif
51		66
52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)	67	# ifndef EV_USE_SELECT
		68	# if HAVE_SELECT && HAVE_SYS_SELECT_H
53	# define EV_USE_POLL 1	69	# define EV_USE_SELECT 1
		70	# else
		71	# define EV_USE_SELECT 0
		72	# endif
54	# endif	73	# endif
55		74
56	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)	75	# ifndef EV_USE_POLL
		76	# if HAVE_POLL && HAVE_POLL_H
57	# define EV_USE_EPOLL 1	77	# define EV_USE_POLL 1
		78	# else
		79	# define EV_USE_POLL 0
		80	# endif
58	# endif	81	# endif
59		82
		83	# ifndef EV_USE_EPOLL
		84	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		85	# define EV_USE_EPOLL 1
		86	# else
		87	# define EV_USE_EPOLL 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_KQUEUE
60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)	92	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
61	# define EV_USE_KQUEUE 1	93	# define EV_USE_KQUEUE 1
		94	# else
		95	# define EV_USE_KQUEUE 0
		96	# endif
		97	# endif
		98
		99	# ifndef EV_USE_PORT
		100	# if HAVE_PORT_H && HAVE_PORT_CREATE
		101	# define EV_USE_PORT 1
		102	# else
		103	# define EV_USE_PORT 0
		104	# endif
		105	# endif
		106
		107	# ifndef EV_USE_INOTIFY
		108	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		109	# define EV_USE_INOTIFY 1
		110	# else
		111	# define EV_USE_INOTIFY 0
		112	# endif
62	# endif	113	# endif
63		114
64	#endif	115	#endif
65		116
66	#include <math.h>	117	#include <math.h>
…		…
75	#include <sys/types.h>	126	#include <sys/types.h>
76	#include <time.h>	127	#include <time.h>
77		128
78	#include <signal.h>	129	#include <signal.h>
79		130
		131	#ifdef EV_H
		132	# include EV_H
		133	#else
		134	# include "ev.h"
		135	#endif
		136
80	#ifndef _WIN32	137	#ifndef _WIN32
81	# include <unistd.h>
82	# include <sys/time.h>	138	# include <sys/time.h>
83	# include <sys/wait.h>	139	# include <sys/wait.h>
		140	# include <unistd.h>
84	#else	141	#else
85	# define WIN32_LEAN_AND_MEAN	142	# define WIN32_LEAN_AND_MEAN
86	# include <windows.h>	143	# include <windows.h>
87	# ifndef EV_SELECT_IS_WINSOCKET	144	# ifndef EV_SELECT_IS_WINSOCKET
88	# define EV_SELECT_IS_WINSOCKET 1	145	# define EV_SELECT_IS_WINSOCKET 1
…		…
90	#endif	147	#endif
91		148
92	/**/	149	/**/
93		150
94	#ifndef EV_USE_MONOTONIC	151	#ifndef EV_USE_MONOTONIC
95	# define EV_USE_MONOTONIC 1	152	# define EV_USE_MONOTONIC 0
		153	#endif
		154
		155	#ifndef EV_USE_REALTIME
		156	# define EV_USE_REALTIME 0
		157	#endif
		158
		159	#ifndef EV_USE_NANOSLEEP
		160	# define EV_USE_NANOSLEEP 0
96	#endif	161	#endif
97		162
98	#ifndef EV_USE_SELECT	163	#ifndef EV_USE_SELECT
99	# define EV_USE_SELECT 1	164	# define EV_USE_SELECT 1
100	# define EV_SELECT_USE_FD_SET 1
101	#endif	165	#endif
102		166
103	#ifndef EV_USE_POLL	167	#ifndef EV_USE_POLL
104	# ifdef _WIN32	168	# ifdef _WIN32
105	# define EV_USE_POLL 0	169	# define EV_USE_POLL 0
…		…
114		178
115	#ifndef EV_USE_KQUEUE	179	#ifndef EV_USE_KQUEUE
116	# define EV_USE_KQUEUE 0	180	# define EV_USE_KQUEUE 0
117	#endif	181	#endif
118		182
119	#ifndef EV_USE_REALTIME	183	#ifndef EV_USE_PORT
120	# define EV_USE_REALTIME 1	184	# define EV_USE_PORT 0
		185	#endif
		186
		187	#ifndef EV_USE_INOTIFY
		188	# define EV_USE_INOTIFY 0
		189	#endif
		190
		191	#ifndef EV_PID_HASHSIZE
		192	# if EV_MINIMAL
		193	# define EV_PID_HASHSIZE 1
		194	# else
		195	# define EV_PID_HASHSIZE 16
		196	# endif
		197	#endif
		198
		199	#ifndef EV_INOTIFY_HASHSIZE
		200	# if EV_MINIMAL
		201	# define EV_INOTIFY_HASHSIZE 1
		202	# else
		203	# define EV_INOTIFY_HASHSIZE 16
		204	# endif
121	#endif	205	#endif
122		206
123	/**/	207	/**/
124
125	/* darwin simply cannot be helped */
126	#ifdef __APPLE__
127	# undef EV_USE_POLL
128	# undef EV_USE_KQUEUE
129	#endif
130		208
131	#ifndef CLOCK_MONOTONIC	209	#ifndef CLOCK_MONOTONIC
132	# undef EV_USE_MONOTONIC	210	# undef EV_USE_MONOTONIC
133	# define EV_USE_MONOTONIC 0	211	# define EV_USE_MONOTONIC 0
134	#endif	212	#endif
…		…
136	#ifndef CLOCK_REALTIME	214	#ifndef CLOCK_REALTIME
137	# undef EV_USE_REALTIME	215	# undef EV_USE_REALTIME
138	# define EV_USE_REALTIME 0	216	# define EV_USE_REALTIME 0
139	#endif	217	#endif
140		218
		219	#if !EV_STAT_ENABLE
		220	# undef EV_USE_INOTIFY
		221	# define EV_USE_INOTIFY 0
		222	#endif
		223
		224	#if !EV_USE_NANOSLEEP
		225	# ifndef _WIN32
		226	# include <sys/select.h>
		227	# endif
		228	#endif
		229
		230	#if EV_USE_INOTIFY
		231	# include <sys/inotify.h>
		232	#endif
		233
141	#if EV_SELECT_IS_WINSOCKET	234	#if EV_SELECT_IS_WINSOCKET
142	# include <winsock.h>	235	# include <winsock.h>
143	#endif	236	#endif
144		237
145	/**/	238	/**/
146		239
		240	/*
		241	* This is used to avoid floating point rounding problems.
		242	* It is added to ev_rt_now when scheduling periodics
		243	* to ensure progress, time-wise, even when rounding
		244	* errors are against us.
		245	* This value is good at least till the year 4000.
		246	* Better solutions welcome.
		247	*/
		248	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
		249
147	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	250	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
148	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	251	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
149	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
150	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	252	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
151		253
152	#ifdef EV_H
153	# include EV_H
154	#else
155	# include "ev.h"
156	#endif
157
158	#if __GNUC__ >= 3	254	#if __GNUC__ >= 4
159	# define expect(expr,value) __builtin_expect ((expr),(value))	255	# define expect(expr,value) __builtin_expect ((expr),(value))
160	# define inline inline	256	# define noinline __attribute__ ((noinline))
161	#else	257	#else
162	# define expect(expr,value) (expr)	258	# define expect(expr,value) (expr)
163	# define inline static	259	# define noinline
		260	# if __STDC_VERSION__ < 199901L
		261	# define inline
		262	# endif
164	#endif	263	#endif
165		264
166	#define expect_false(expr) expect ((expr) != 0, 0)	265	#define expect_false(expr) expect ((expr) != 0, 0)
167	#define expect_true(expr) expect ((expr) != 0, 1)	266	#define expect_true(expr) expect ((expr) != 0, 1)
		267	#define inline_size static inline
		268
		269	#if EV_MINIMAL
		270	# define inline_speed static noinline
		271	#else
		272	# define inline_speed static inline
		273	#endif
168		274
169	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	275	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
170	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	276	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
171		277
172	#define EMPTY /* required for microsofts broken pseudo-c compiler */	278	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		279	#define EMPTY2(a,b) /* used to suppress some warnings */
173		280
174	typedef struct ev_watcher *W;	281	typedef ev_watcher *W;
175	typedef struct ev_watcher_list *WL;	282	typedef ev_watcher_list *WL;
176	typedef struct ev_watcher_time *WT;	283	typedef ev_watcher_time *WT;
177		284
		285	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		286	/* giving it a reasonably high chance of working on typical architetcures */
178	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	287	static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
179		288
180	#ifdef _WIN32	289	#ifdef _WIN32
181	# include "ev_win32.c"	290	# include "ev_win32.c"
182	#endif	291	#endif
183		292
184	/*****************************************************************************/	293	/*****************************************************************************/
185		294
186	static void (*syserr_cb)(const char *msg);	295	static void (*syserr_cb)(const char *msg);
187		296
		297	void
188	void ev_set_syserr_cb (void (*cb)(const char *msg))	298	ev_set_syserr_cb (void (*cb)(const char *msg))
189	{	299	{
190	syserr_cb = cb;	300	syserr_cb = cb;
191	}	301	}
192		302
193	static void	303	static void noinline
194	syserr (const char *msg)	304	syserr (const char *msg)
195	{	305	{
196	if (!msg)	306	if (!msg)
197	msg = "(libev) system error";	307	msg = "(libev) system error";
198		308
…		…
205	}	315	}
206	}	316	}
207		317
208	static void *(*alloc)(void *ptr, long size);	318	static void *(*alloc)(void *ptr, long size);
209		319
		320	void
210	void ev_set_allocator (void *(*cb)(void *ptr, long size))	321	ev_set_allocator (void *(*cb)(void *ptr, long size))
211	{	322	{
212	alloc = cb;	323	alloc = cb;
213	}	324	}
214		325
215	static void *	326	inline_speed void *
216	ev_realloc (void *ptr, long size)	327	ev_realloc (void *ptr, long size)
217	{	328	{
218	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	329	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
219		330
220	if (!ptr && size)	331	if (!ptr && size)
…		…
244	typedef struct	355	typedef struct
245	{	356	{
246	W w;	357	W w;
247	int events;	358	int events;
248	} ANPENDING;	359	} ANPENDING;
		360
		361	#if EV_USE_INOTIFY
		362	typedef struct
		363	{
		364	WL head;
		365	} ANFS;
		366	#endif
249		367
250	#if EV_MULTIPLICITY	368	#if EV_MULTIPLICITY
251		369
252	struct ev_loop	370	struct ev_loop
253	{	371	{
…		…
257	#include "ev_vars.h"	375	#include "ev_vars.h"
258	#undef VAR	376	#undef VAR
259	};	377	};
260	#include "ev_wrap.h"	378	#include "ev_wrap.h"
261		379
262	struct ev_loop default_loop_struct;	380	static struct ev_loop default_loop_struct;
263	static struct ev_loop *default_loop;	381	struct ev_loop *ev_default_loop_ptr;
264		382
265	#else	383	#else
266		384
267	ev_tstamp ev_rt_now;	385	ev_tstamp ev_rt_now;
268	#define VAR(name,decl) static decl;	386	#define VAR(name,decl) static decl;
269	#include "ev_vars.h"	387	#include "ev_vars.h"
270	#undef VAR	388	#undef VAR
271		389
272	static int default_loop;	390	static int ev_default_loop_ptr;
273		391
274	#endif	392	#endif
275		393
276	/*****************************************************************************/	394	/*****************************************************************************/
277		395
…		…
287	gettimeofday (&tv, 0);	405	gettimeofday (&tv, 0);
288	return tv.tv_sec + tv.tv_usec * 1e-6;	406	return tv.tv_sec + tv.tv_usec * 1e-6;
289	#endif	407	#endif
290	}	408	}
291		409
292	inline ev_tstamp	410	ev_tstamp inline_size
293	get_clock (void)	411	get_clock (void)
294	{	412	{
295	#if EV_USE_MONOTONIC	413	#if EV_USE_MONOTONIC
296	if (expect_true (have_monotonic))	414	if (expect_true (have_monotonic))
297	{	415	{
…		…
310	{	428	{
311	return ev_rt_now;	429	return ev_rt_now;
312	}	430	}
313	#endif	431	#endif
314		432
315	#define array_roundsize(type,n) ((n) | 4 & ~3)	433	void
		434	ev_sleep (ev_tstamp delay)
		435	{
		436	if (delay > 0.)
		437	{
		438	#if EV_USE_NANOSLEEP
		439	struct timespec ts;
		440
		441	ts.tv_sec = (time_t)delay;
		442	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		443
		444	nanosleep (&ts, 0);
		445	#elif defined(_WIN32)
		446	Sleep (delay * 1e3);
		447	#else
		448	struct timeval tv;
		449
		450	tv.tv_sec = (time_t)delay;
		451	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		452
		453	select (0, 0, 0, 0, &tv);
		454	#endif
		455	}
		456	}
		457
		458	/*****************************************************************************/
		459
		460	int inline_size
		461	array_nextsize (int elem, int cur, int cnt)
		462	{
		463	int ncur = cur + 1;
		464
		465	do
		466	ncur <<= 1;
		467	while (cnt > ncur);
		468
		469	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		470	if (elem * ncur > 4096)
		471	{
		472	ncur *= elem;
		473	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		474	ncur = ncur - sizeof (void *) * 4;
		475	ncur /= elem;
		476	}
		477
		478	return ncur;
		479	}
		480
		481	static noinline void *
		482	array_realloc (int elem, void *base, int *cur, int cnt)
		483	{
		484	*cur = array_nextsize (elem, *cur, cnt);
		485	return ev_realloc (base, elem * *cur);
		486	}
316		487
317	#define array_needsize(type,base,cur,cnt,init) \	488	#define array_needsize(type,base,cur,cnt,init) \
318	if (expect_false ((cnt) > cur)) \	489	if (expect_false ((cnt) > (cur))) \
319	{ \	490	{ \
320	int newcnt = cur; \	491	int ocur_ = (cur); \
321	do \	492	(base) = (type *)array_realloc \
322	{ \	493	(sizeof (type), (base), &(cur), (cnt)); \
323	newcnt = array_roundsize (type, newcnt << 1); \	494	init ((base) + (ocur_), (cur) - ocur_); \
324	} \
325	while ((cnt) > newcnt); \
326	\
327	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
328	init (base + cur, newcnt - cur); \
329	cur = newcnt; \
330	}	495	}
331		496
		497	#if 0
332	#define array_slim(type,stem) \	498	#define array_slim(type,stem) \
333	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	499	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
334	{ \	500	{ \
335	stem ## max = array_roundsize (stem ## cnt >> 1); \	501	stem ## max = array_roundsize (stem ## cnt >> 1); \
336	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	502	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
337	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	503	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
338	}	504	}
		505	#endif
339		506
340	#define array_free(stem, idx) \	507	#define array_free(stem, idx) \
341	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	508	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
342		509
343	/*****************************************************************************/	510	/*****************************************************************************/
344		511
345	static void	512	void noinline
		513	ev_feed_event (EV_P_ void *w, int revents)
		514	{
		515	W w_ = (W)w;
		516	int pri = ABSPRI (w_);
		517
		518	if (expect_false (w_->pending))
		519	pendings [pri][w_->pending - 1].events |= revents;
		520	else
		521	{
		522	w_->pending = ++pendingcnt [pri];
		523	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		524	pendings [pri][w_->pending - 1].w = w_;
		525	pendings [pri][w_->pending - 1].events = revents;
		526	}
		527	}
		528
		529	void inline_speed
		530	queue_events (EV_P_ W *events, int eventcnt, int type)
		531	{
		532	int i;
		533
		534	for (i = 0; i < eventcnt; ++i)
		535	ev_feed_event (EV_A_ events [i], type);
		536	}
		537
		538	/*****************************************************************************/
		539
		540	void inline_size
346	anfds_init (ANFD *base, int count)	541	anfds_init (ANFD *base, int count)
347	{	542	{
348	while (count--)	543	while (count--)
349	{	544	{
350	base->head = 0;	545	base->head = 0;
…		…
353		548
354	++base;	549	++base;
355	}	550	}
356	}	551	}
357		552
358	void	553	void inline_speed
359	ev_feed_event (EV_P_ void *w, int revents)
360	{
361	W w_ = (W)w;
362
363	if (w_->pending)
364	{
365	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
366	return;
367	}
368
369	w_->pending = ++pendingcnt [ABSPRI (w_)];
370	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
371	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
372	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
373	}
374
375	static void
376	queue_events (EV_P_ W *events, int eventcnt, int type)
377	{
378	int i;
379
380	for (i = 0; i < eventcnt; ++i)
381	ev_feed_event (EV_A_ events [i], type);
382	}
383
384	inline void
385	fd_event (EV_P_ int fd, int revents)	554	fd_event (EV_P_ int fd, int revents)
386	{	555	{
387	ANFD *anfd = anfds + fd;	556	ANFD *anfd = anfds + fd;
388	struct ev_io *w;	557	ev_io *w;
389		558
390	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	559	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
391	{	560	{
392	int ev = w->events & revents;	561	int ev = w->events & revents;
393		562
394	if (ev)	563	if (ev)
395	ev_feed_event (EV_A_ (W)w, ev);	564	ev_feed_event (EV_A_ (W)w, ev);
…		…
397	}	566	}
398		567
399	void	568	void
400	ev_feed_fd_event (EV_P_ int fd, int revents)	569	ev_feed_fd_event (EV_P_ int fd, int revents)
401	{	570	{
		571	if (fd >= 0 && fd < anfdmax)
402	fd_event (EV_A_ fd, revents);	572	fd_event (EV_A_ fd, revents);
403	}	573	}
404		574
405	/*****************************************************************************/	575	void inline_size
406
407	static void
408	fd_reify (EV_P)	576	fd_reify (EV_P)
409	{	577	{
410	int i;	578	int i;
411		579
412	for (i = 0; i < fdchangecnt; ++i)	580	for (i = 0; i < fdchangecnt; ++i)
413	{	581	{
414	int fd = fdchanges [i];	582	int fd = fdchanges [i];
415	ANFD *anfd = anfds + fd;	583	ANFD *anfd = anfds + fd;
416	struct ev_io *w;	584	ev_io *w;
417		585
418	int events = 0;	586	unsigned char events = 0;
419		587
420	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	588	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
421	events |= w->events;	589	events |= (unsigned char)w->events;
422		590
423	#if EV_SELECT_IS_WINSOCKET	591	#if EV_SELECT_IS_WINSOCKET
424	if (events)	592	if (events)
425	{	593	{
426	unsigned long argp;	594	unsigned long argp;
427	anfd->handle = _get_osfhandle (fd);	595	anfd->handle = _get_osfhandle (fd);
428	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	596	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
429	}	597	}
430	#endif	598	#endif
431		599
		600	{
		601	unsigned char o_events = anfd->events;
		602	unsigned char o_reify = anfd->reify;
		603
432	anfd->reify = 0;	604	anfd->reify = 0;
433
434	method_modify (EV_A_ fd, anfd->events, events);
435	anfd->events = events;	605	anfd->events = events;
		606
		607	if (o_events != events || o_reify & EV_IOFDSET)
		608	backend_modify (EV_A_ fd, o_events, events);
		609	}
436	}	610	}
437		611
438	fdchangecnt = 0;	612	fdchangecnt = 0;
439	}	613	}
440		614
441	static void	615	void inline_size
442	fd_change (EV_P_ int fd)	616	fd_change (EV_P_ int fd, int flags)
443	{	617	{
444	if (anfds [fd].reify)	618	unsigned char reify = anfds [fd].reify;
445	return;
446
447	anfds [fd].reify = 1;	619	anfds [fd].reify |= flags;
448		620
		621	if (expect_true (!reify))
		622	{
449	++fdchangecnt;	623	++fdchangecnt;
450	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	624	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
451	fdchanges [fdchangecnt - 1] = fd;	625	fdchanges [fdchangecnt - 1] = fd;
		626	}
452	}	627	}
453		628
454	static void	629	void inline_speed
455	fd_kill (EV_P_ int fd)	630	fd_kill (EV_P_ int fd)
456	{	631	{
457	struct ev_io *w;	632	ev_io *w;
458		633
459	while ((w = (struct ev_io *)anfds [fd].head))	634	while ((w = (ev_io *)anfds [fd].head))
460	{	635	{
461	ev_io_stop (EV_A_ w);	636	ev_io_stop (EV_A_ w);
462	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	637	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
463	}	638	}
464	}	639	}
465		640
466	static int	641	int inline_size
467	fd_valid (int fd)	642	fd_valid (int fd)
468	{	643	{
469	#ifdef _WIN32	644	#ifdef _WIN32
470	return _get_osfhandle (fd) != -1;	645	return _get_osfhandle (fd) != -1;
471	#else	646	#else
472	return fcntl (fd, F_GETFD) != -1;	647	return fcntl (fd, F_GETFD) != -1;
473	#endif	648	#endif
474	}	649	}
475		650
476	/* called on EBADF to verify fds */	651	/* called on EBADF to verify fds */
477	static void	652	static void noinline
478	fd_ebadf (EV_P)	653	fd_ebadf (EV_P)
479	{	654	{
480	int fd;	655	int fd;
481		656
482	for (fd = 0; fd < anfdmax; ++fd)	657	for (fd = 0; fd < anfdmax; ++fd)
…		…
484	if (!fd_valid (fd) == -1 && errno == EBADF)	659	if (!fd_valid (fd) == -1 && errno == EBADF)
485	fd_kill (EV_A_ fd);	660	fd_kill (EV_A_ fd);
486	}	661	}
487		662
488	/* called on ENOMEM in select/poll to kill some fds and retry */	663	/* called on ENOMEM in select/poll to kill some fds and retry */
489	static void	664	static void noinline
490	fd_enomem (EV_P)	665	fd_enomem (EV_P)
491	{	666	{
492	int fd;	667	int fd;
493		668
494	for (fd = anfdmax; fd--; )	669	for (fd = anfdmax; fd--; )
…		…
497	fd_kill (EV_A_ fd);	672	fd_kill (EV_A_ fd);
498	return;	673	return;
499	}	674	}
500	}	675	}
501		676
502	/* usually called after fork if method needs to re-arm all fds from scratch */	677	/* usually called after fork if backend needs to re-arm all fds from scratch */
503	static void	678	static void noinline
504	fd_rearm_all (EV_P)	679	fd_rearm_all (EV_P)
505	{	680	{
506	int fd;	681	int fd;
507		682
508	/* this should be highly optimised to not do anything but set a flag */
509	for (fd = 0; fd < anfdmax; ++fd)	683	for (fd = 0; fd < anfdmax; ++fd)
510	if (anfds [fd].events)	684	if (anfds [fd].events)
511	{	685	{
512	anfds [fd].events = 0;	686	anfds [fd].events = 0;
513	fd_change (EV_A_ fd);	687	fd_change (EV_A_ fd, EV_IOFDSET | 1);
514	}	688	}
515	}	689	}
516		690
517	/*****************************************************************************/	691	/*****************************************************************************/
518		692
519	static void	693	void inline_speed
520	upheap (WT *heap, int k)	694	upheap (WT *heap, int k)
521	{	695	{
522	WT w = heap [k];	696	WT w = heap [k];
523		697
524	while (k && heap [k >> 1]->at > w->at)	698	while (k)
525	{	699	{
		700	int p = (k - 1) >> 1;
		701
		702	if (heap [p]->at <= w->at)
		703	break;
		704
526	heap [k] = heap [k >> 1];	705	heap [k] = heap [p];
527	((W)heap [k])->active = k + 1;	706	((W)heap [k])->active = k + 1;
528	k >>= 1;	707	k = p;
529	}	708	}
530		709
531	heap [k] = w;	710	heap [k] = w;
532	((W)heap [k])->active = k + 1;	711	((W)heap [k])->active = k + 1;
533
534	}	712	}
535		713
536	static void	714	void inline_speed
537	downheap (WT *heap, int N, int k)	715	downheap (WT *heap, int N, int k)
538	{	716	{
539	WT w = heap [k];	717	WT w = heap [k];
540		718
541	while (k < (N >> 1))	719	for (;;)
542	{	720	{
543	int j = k << 1;	721	int c = (k << 1) + 1;
544		722
545	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	723	if (c >= N)
546	++j;
547
548	if (w->at <= heap [j]->at)
549	break;	724	break;
550		725
		726	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		727	? 1 : 0;
		728
		729	if (w->at <= heap [c]->at)
		730	break;
		731
551	heap [k] = heap [j];	732	heap [k] = heap [c];
552	((W)heap [k])->active = k + 1;	733	((W)heap [k])->active = k + 1;
		734
553	k = j;	735	k = c;
554	}	736	}
555		737
556	heap [k] = w;	738	heap [k] = w;
557	((W)heap [k])->active = k + 1;	739	((W)heap [k])->active = k + 1;
558	}	740	}
559		741
560	inline void	742	void inline_size
561	adjustheap (WT *heap, int N, int k)	743	adjustheap (WT *heap, int N, int k)
562	{	744	{
563	upheap (heap, k);	745	upheap (heap, k);
564	downheap (heap, N, k);	746	downheap (heap, N, k);
565	}	747	}
…		…
575	static ANSIG *signals;	757	static ANSIG *signals;
576	static int signalmax;	758	static int signalmax;
577		759
578	static int sigpipe [2];	760	static int sigpipe [2];
579	static sig_atomic_t volatile gotsig;	761	static sig_atomic_t volatile gotsig;
580	static struct ev_io sigev;	762	static ev_io sigev;
581		763
582	static void	764	void inline_size
583	signals_init (ANSIG *base, int count)	765	signals_init (ANSIG *base, int count)
584	{	766	{
585	while (count--)	767	while (count--)
586	{	768	{
587	base->head = 0;	769	base->head = 0;
…		…
607	write (sigpipe [1], &signum, 1);	789	write (sigpipe [1], &signum, 1);
608	errno = old_errno;	790	errno = old_errno;
609	}	791	}
610	}	792	}
611		793
612	void	794	void noinline
613	ev_feed_signal_event (EV_P_ int signum)	795	ev_feed_signal_event (EV_P_ int signum)
614	{	796	{
615	WL w;	797	WL w;
616		798
617	#if EV_MULTIPLICITY	799	#if EV_MULTIPLICITY
618	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	800	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
619	#endif	801	#endif
620		802
621	--signum;	803	--signum;
622		804
623	if (signum < 0 || signum >= signalmax)	805	if (signum < 0 || signum >= signalmax)
…		…
628	for (w = signals [signum].head; w; w = w->next)	810	for (w = signals [signum].head; w; w = w->next)
629	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	811	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
630	}	812	}
631		813
632	static void	814	static void
633	sigcb (EV_P_ struct ev_io *iow, int revents)	815	sigcb (EV_P_ ev_io *iow, int revents)
634	{	816	{
635	int signum;	817	int signum;
636		818
637	read (sigpipe [0], &revents, 1);	819	read (sigpipe [0], &revents, 1);
638	gotsig = 0;	820	gotsig = 0;
…		…
640	for (signum = signalmax; signum--; )	822	for (signum = signalmax; signum--; )
641	if (signals [signum].gotsig)	823	if (signals [signum].gotsig)
642	ev_feed_signal_event (EV_A_ signum + 1);	824	ev_feed_signal_event (EV_A_ signum + 1);
643	}	825	}
644		826
645	inline void	827	void inline_speed
646	fd_intern (int fd)	828	fd_intern (int fd)
647	{	829	{
648	#ifdef _WIN32	830	#ifdef _WIN32
649	int arg = 1;	831	int arg = 1;
650	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	832	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
652	fcntl (fd, F_SETFD, FD_CLOEXEC);	834	fcntl (fd, F_SETFD, FD_CLOEXEC);
653	fcntl (fd, F_SETFL, O_NONBLOCK);	835	fcntl (fd, F_SETFL, O_NONBLOCK);
654	#endif	836	#endif
655	}	837	}
656		838
657	static void	839	static void noinline
658	siginit (EV_P)	840	siginit (EV_P)
659	{	841	{
660	fd_intern (sigpipe [0]);	842	fd_intern (sigpipe [0]);
661	fd_intern (sigpipe [1]);	843	fd_intern (sigpipe [1]);
662		844
…		…
665	ev_unref (EV_A); /* child watcher should not keep loop alive */	847	ev_unref (EV_A); /* child watcher should not keep loop alive */
666	}	848	}
667		849
668	/*****************************************************************************/	850	/*****************************************************************************/
669		851
670	static struct ev_child *childs [PID_HASHSIZE];	852	static WL childs [EV_PID_HASHSIZE];
671		853
672	#ifndef _WIN32	854	#ifndef _WIN32
673		855
674	static struct ev_signal childev;	856	static ev_signal childev;
		857
		858	void inline_speed
		859	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		860	{
		861	ev_child *w;
		862
		863	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		864	if (w->pid == pid || !w->pid)
		865	{
		866	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		867	w->rpid = pid;
		868	w->rstatus = status;
		869	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		870	}
		871	}
675		872
676	#ifndef WCONTINUED	873	#ifndef WCONTINUED
677	# define WCONTINUED 0	874	# define WCONTINUED 0
678	#endif	875	#endif
679		876
680	static void	877	static void
681	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
682	{
683	struct ev_child *w;
684
685	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
686	if (w->pid == pid || !w->pid)
687	{
688	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
689	w->rpid = pid;
690	w->rstatus = status;
691	ev_feed_event (EV_A_ (W)w, EV_CHILD);
692	}
693	}
694
695	static void
696	childcb (EV_P_ struct ev_signal *sw, int revents)	878	childcb (EV_P_ ev_signal *sw, int revents)
697	{	879	{
698	int pid, status;	880	int pid, status;
699		881
		882	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
700	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	883	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
701	{	884	if (!WCONTINUED
		885	|| errno != EINVAL
		886	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		887	return;
		888
702	/* make sure we are called again until all childs have been reaped */	889	/* make sure we are called again until all childs have been reaped */
		890	/* we need to do it this way so that the callback gets called before we continue */
703	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	891	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
704		892
705	child_reap (EV_A_ sw, pid, pid, status);	893	child_reap (EV_A_ sw, pid, pid, status);
		894	if (EV_PID_HASHSIZE > 1)
706	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	895	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
707	}
708	}	896	}
709		897
710	#endif	898	#endif
711		899
712	/*****************************************************************************/	900	/*****************************************************************************/
713		901
		902	#if EV_USE_PORT
		903	# include "ev_port.c"
		904	#endif
714	#if EV_USE_KQUEUE	905	#if EV_USE_KQUEUE
715	# include "ev_kqueue.c"	906	# include "ev_kqueue.c"
716	#endif	907	#endif
717	#if EV_USE_EPOLL	908	#if EV_USE_EPOLL
718	# include "ev_epoll.c"	909	# include "ev_epoll.c"
…		…
735	{	926	{
736	return EV_VERSION_MINOR;	927	return EV_VERSION_MINOR;
737	}	928	}
738		929
739	/* return true if we are running with elevated privileges and should ignore env variables */	930	/* return true if we are running with elevated privileges and should ignore env variables */
740	static int	931	int inline_size
741	enable_secure (void)	932	enable_secure (void)
742	{	933	{
743	#ifdef _WIN32	934	#ifdef _WIN32
744	return 0;	935	return 0;
745	#else	936	#else
746	return getuid () != geteuid ()	937	return getuid () != geteuid ()
747	|| getgid () != getegid ();	938	|| getgid () != getegid ();
748	#endif	939	#endif
749	}	940	}
750		941
751	int	942	unsigned int
752	ev_method (EV_P)	943	ev_supported_backends (void)
753	{	944	{
754	return method;	945	unsigned int flags = 0;
755	}
756		946
757	static void	947	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
758	loop_init (EV_P_ int methods)	948	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		949	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		950	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		951	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		952
		953	return flags;
		954	}
		955
		956	unsigned int
		957	ev_recommended_backends (void)
759	{	958	{
760	if (!method)	959	unsigned int flags = ev_supported_backends ();
		960
		961	#ifndef __NetBSD__
		962	/* kqueue is borked on everything but netbsd apparently */
		963	/* it usually doesn't work correctly on anything but sockets and pipes */
		964	flags &= ~EVBACKEND_KQUEUE;
		965	#endif
		966	#ifdef __APPLE__
		967	// flags &= ~EVBACKEND_KQUEUE; for documentation
		968	flags &= ~EVBACKEND_POLL;
		969	#endif
		970
		971	return flags;
		972	}
		973
		974	unsigned int
		975	ev_embeddable_backends (void)
		976	{
		977	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
		978
		979	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		980	/* please fix it and tell me how to detect the fix */
		981	flags &= ~EVBACKEND_EPOLL;
		982
		983	#ifdef __APPLE__
		984	/* is there anything thats not broken on darwin? */
		985	flags &= ~EVBACKEND_KQUEUE;
		986	#endif
		987
		988	return flags;
		989	}
		990
		991	unsigned int
		992	ev_backend (EV_P)
		993	{
		994	return backend;
		995	}
		996
		997	unsigned int
		998	ev_loop_count (EV_P)
		999	{
		1000	return loop_count;
		1001	}
		1002
		1003	void
		1004	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1005	{
		1006	io_blocktime = interval;
		1007	}
		1008
		1009	void
		1010	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1011	{
		1012	timeout_blocktime = interval;
		1013	}
		1014
		1015	static void noinline
		1016	loop_init (EV_P_ unsigned int flags)
		1017	{
		1018	if (!backend)
761	{	1019	{
762	#if EV_USE_MONOTONIC	1020	#if EV_USE_MONOTONIC
763	{	1021	{
764	struct timespec ts;	1022	struct timespec ts;
765	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1023	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
770	ev_rt_now = ev_time ();	1028	ev_rt_now = ev_time ();
771	mn_now = get_clock ();	1029	mn_now = get_clock ();
772	now_floor = mn_now;	1030	now_floor = mn_now;
773	rtmn_diff = ev_rt_now - mn_now;	1031	rtmn_diff = ev_rt_now - mn_now;
774		1032
775	if (methods == EVMETHOD_AUTO)	1033	io_blocktime = 0.;
776	if (!enable_secure () && getenv ("LIBEV_METHODS"))	1034	timeout_blocktime = 0.;
		1035
		1036	/* pid check not overridable via env */
		1037	#ifndef _WIN32
		1038	if (flags & EVFLAG_FORKCHECK)
		1039	curpid = getpid ();
		1040	#endif
		1041
		1042	if (!(flags & EVFLAG_NOENV)
		1043	&& !enable_secure ()
		1044	&& getenv ("LIBEV_FLAGS"))
777	methods = atoi (getenv ("LIBEV_METHODS"));	1045	flags = atoi (getenv ("LIBEV_FLAGS"));
778	else
779	methods = EVMETHOD_ANY;
780		1046
781	method = 0;	1047	if (!(flags & 0x0000ffffUL))
		1048	flags |= ev_recommended_backends ();
		1049
		1050	backend = 0;
		1051	backend_fd = -1;
		1052	#if EV_USE_INOTIFY
		1053	fs_fd = -2;
		1054	#endif
		1055
		1056	#if EV_USE_PORT
		1057	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		1058	#endif
782	#if EV_USE_KQUEUE	1059	#if EV_USE_KQUEUE
783	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	1060	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
784	#endif	1061	#endif
785	#if EV_USE_EPOLL	1062	#if EV_USE_EPOLL
786	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	1063	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
787	#endif	1064	#endif
788	#if EV_USE_POLL	1065	#if EV_USE_POLL
789	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	1066	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
790	#endif	1067	#endif
791	#if EV_USE_SELECT	1068	#if EV_USE_SELECT
792	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	1069	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
793	#endif	1070	#endif
794		1071
795	ev_init (&sigev, sigcb);	1072	ev_init (&sigev, sigcb);
796	ev_set_priority (&sigev, EV_MAXPRI);	1073	ev_set_priority (&sigev, EV_MAXPRI);
797	}	1074	}
798	}	1075	}
799		1076
800	void	1077	static void noinline
801	loop_destroy (EV_P)	1078	loop_destroy (EV_P)
802	{	1079	{
803	int i;	1080	int i;
804		1081
		1082	#if EV_USE_INOTIFY
		1083	if (fs_fd >= 0)
		1084	close (fs_fd);
		1085	#endif
		1086
		1087	if (backend_fd >= 0)
		1088	close (backend_fd);
		1089
		1090	#if EV_USE_PORT
		1091	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		1092	#endif
805	#if EV_USE_KQUEUE	1093	#if EV_USE_KQUEUE
806	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1094	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
807	#endif	1095	#endif
808	#if EV_USE_EPOLL	1096	#if EV_USE_EPOLL
809	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1097	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
810	#endif	1098	#endif
811	#if EV_USE_POLL	1099	#if EV_USE_POLL
812	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1100	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
813	#endif	1101	#endif
814	#if EV_USE_SELECT	1102	#if EV_USE_SELECT
815	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1103	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
816	#endif	1104	#endif
817		1105
818	for (i = NUMPRI; i--; )	1106	for (i = NUMPRI; i--; )
		1107	{
819	array_free (pending, [i]);	1108	array_free (pending, [i]);
		1109	#if EV_IDLE_ENABLE
		1110	array_free (idle, [i]);
		1111	#endif
		1112	}
		1113
		1114	ev_free (anfds); anfdmax = 0;
820		1115
821	/* have to use the microsoft-never-gets-it-right macro */	1116	/* have to use the microsoft-never-gets-it-right macro */
822	array_free (fdchange, EMPTY);	1117	array_free (fdchange, EMPTY);
823	array_free (timer, EMPTY);	1118	array_free (timer, EMPTY);
824	#if EV_PERIODICS	1119	#if EV_PERIODIC_ENABLE
825	array_free (periodic, EMPTY);	1120	array_free (periodic, EMPTY);
826	#endif	1121	#endif
		1122	#if EV_FORK_ENABLE
827	array_free (idle, EMPTY);	1123	array_free (fork, EMPTY);
		1124	#endif
828	array_free (prepare, EMPTY);	1125	array_free (prepare, EMPTY);
829	array_free (check, EMPTY);	1126	array_free (check, EMPTY);
830		1127
831	method = 0;	1128	backend = 0;
832	}	1129	}
833		1130
834	static void	1131	void inline_size infy_fork (EV_P);
		1132
		1133	void inline_size
835	loop_fork (EV_P)	1134	loop_fork (EV_P)
836	{	1135	{
		1136	#if EV_USE_PORT
		1137	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1138	#endif
		1139	#if EV_USE_KQUEUE
		1140	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1141	#endif
837	#if EV_USE_EPOLL	1142	#if EV_USE_EPOLL
838	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1143	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
839	#endif	1144	#endif
840	#if EV_USE_KQUEUE	1145	#if EV_USE_INOTIFY
841	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1146	infy_fork (EV_A);
842	#endif	1147	#endif
843		1148
844	if (ev_is_active (&sigev))	1149	if (ev_is_active (&sigev))
845	{	1150	{
846	/* default loop */	1151	/* default loop */
…		…
859	postfork = 0;	1164	postfork = 0;
860	}	1165	}
861		1166
862	#if EV_MULTIPLICITY	1167	#if EV_MULTIPLICITY
863	struct ev_loop *	1168	struct ev_loop *
864	ev_loop_new (int methods)	1169	ev_loop_new (unsigned int flags)
865	{	1170	{
866	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1171	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
867		1172
868	memset (loop, 0, sizeof (struct ev_loop));	1173	memset (loop, 0, sizeof (struct ev_loop));
869		1174
870	loop_init (EV_A_ methods);	1175	loop_init (EV_A_ flags);
871		1176
872	if (ev_method (EV_A))	1177	if (ev_backend (EV_A))
873	return loop;	1178	return loop;
874		1179
875	return 0;	1180	return 0;
876	}	1181	}
877		1182
…		…
890		1195
891	#endif	1196	#endif
892		1197
893	#if EV_MULTIPLICITY	1198	#if EV_MULTIPLICITY
894	struct ev_loop *	1199	struct ev_loop *
		1200	ev_default_loop_init (unsigned int flags)
895	#else	1201	#else
896	int	1202	int
		1203	ev_default_loop (unsigned int flags)
897	#endif	1204	#endif
898	ev_default_loop (int methods)
899	{	1205	{
900	if (sigpipe [0] == sigpipe [1])	1206	if (sigpipe [0] == sigpipe [1])
901	if (pipe (sigpipe))	1207	if (pipe (sigpipe))
902	return 0;	1208	return 0;
903		1209
904	if (!default_loop)	1210	if (!ev_default_loop_ptr)
905	{	1211	{
906	#if EV_MULTIPLICITY	1212	#if EV_MULTIPLICITY
907	struct ev_loop *loop = default_loop = &default_loop_struct;	1213	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
908	#else	1214	#else
909	default_loop = 1;	1215	ev_default_loop_ptr = 1;
910	#endif	1216	#endif
911		1217
912	loop_init (EV_A_ methods);	1218	loop_init (EV_A_ flags);
913		1219
914	if (ev_method (EV_A))	1220	if (ev_backend (EV_A))
915	{	1221	{
916	siginit (EV_A);	1222	siginit (EV_A);
917		1223
918	#ifndef _WIN32	1224	#ifndef _WIN32
919	ev_signal_init (&childev, childcb, SIGCHLD);	1225	ev_signal_init (&childev, childcb, SIGCHLD);
…		…
921	ev_signal_start (EV_A_ &childev);	1227	ev_signal_start (EV_A_ &childev);
922	ev_unref (EV_A); /* child watcher should not keep loop alive */	1228	ev_unref (EV_A); /* child watcher should not keep loop alive */
923	#endif	1229	#endif
924	}	1230	}
925	else	1231	else
926	default_loop = 0;	1232	ev_default_loop_ptr = 0;
927	}	1233	}
928		1234
929	return default_loop;	1235	return ev_default_loop_ptr;
930	}	1236	}
931		1237
932	void	1238	void
933	ev_default_destroy (void)	1239	ev_default_destroy (void)
934	{	1240	{
935	#if EV_MULTIPLICITY	1241	#if EV_MULTIPLICITY
936	struct ev_loop *loop = default_loop;	1242	struct ev_loop *loop = ev_default_loop_ptr;
937	#endif	1243	#endif
938		1244
939	#ifndef _WIN32	1245	#ifndef _WIN32
940	ev_ref (EV_A); /* child watcher */	1246	ev_ref (EV_A); /* child watcher */
941	ev_signal_stop (EV_A_ &childev);	1247	ev_signal_stop (EV_A_ &childev);
…		…
952		1258
953	void	1259	void
954	ev_default_fork (void)	1260	ev_default_fork (void)
955	{	1261	{
956	#if EV_MULTIPLICITY	1262	#if EV_MULTIPLICITY
957	struct ev_loop *loop = default_loop;	1263	struct ev_loop *loop = ev_default_loop_ptr;
958	#endif	1264	#endif
959		1265
960	if (method)	1266	if (backend)
961	postfork = 1;	1267	postfork = 1;
962	}	1268	}
963		1269
964	/*****************************************************************************/	1270	/*****************************************************************************/
965		1271
966	static int	1272	void
967	any_pending (EV_P)	1273	ev_invoke (EV_P_ void *w, int revents)
968	{	1274	{
969	int pri;	1275	EV_CB_INVOKE ((W)w, revents);
970
971	for (pri = NUMPRI; pri--; )
972	if (pendingcnt [pri])
973	return 1;
974
975	return 0;
976	}	1276	}
977		1277
978	static void	1278	void inline_speed
979	call_pending (EV_P)	1279	call_pending (EV_P)
980	{	1280	{
981	int pri;	1281	int pri;
982		1282
983	for (pri = NUMPRI; pri--; )	1283	for (pri = NUMPRI; pri--; )
984	while (pendingcnt [pri])	1284	while (pendingcnt [pri])
985	{	1285	{
986	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1286	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
987		1287
988	if (p->w)	1288	if (expect_true (p->w))
989	{	1289	{
		1290	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1291
990	p->w->pending = 0;	1292	p->w->pending = 0;
991	EV_CB_INVOKE (p->w, p->events);	1293	EV_CB_INVOKE (p->w, p->events);
992	}	1294	}
993	}	1295	}
994	}	1296	}
995		1297
996	static void	1298	void inline_size
997	timers_reify (EV_P)	1299	timers_reify (EV_P)
998	{	1300	{
999	while (timercnt && ((WT)timers [0])->at <= mn_now)	1301	while (timercnt && ((WT)timers [0])->at <= mn_now)
1000	{	1302	{
1001	struct ev_timer *w = timers [0];	1303	ev_timer *w = (ev_timer *)timers [0];
1002		1304
1003	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1305	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1004		1306
1005	/* first reschedule or stop timer */	1307	/* first reschedule or stop timer */
1006	if (w->repeat)	1308	if (w->repeat)
1007	{	1309	{
1008	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1310	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1009		1311
1010	((WT)w)->at += w->repeat;	1312	((WT)w)->at += w->repeat;
1011	if (((WT)w)->at < mn_now)	1313	if (((WT)w)->at < mn_now)
1012	((WT)w)->at = mn_now;	1314	((WT)w)->at = mn_now;
1013		1315
1014	downheap ((WT *)timers, timercnt, 0);	1316	downheap (timers, timercnt, 0);
1015	}	1317	}
1016	else	1318	else
1017	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1319	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1018		1320
1019	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1321	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1020	}	1322	}
1021	}	1323	}
1022		1324
1023	#if EV_PERIODICS	1325	#if EV_PERIODIC_ENABLE
1024	static void	1326	void inline_size
1025	periodics_reify (EV_P)	1327	periodics_reify (EV_P)
1026	{	1328	{
1027	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1329	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1028	{	1330	{
1029	struct ev_periodic *w = periodics [0];	1331	ev_periodic *w = (ev_periodic *)periodics [0];
1030		1332
1031	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1333	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1032		1334
1033	/* first reschedule or stop timer */	1335	/* first reschedule or stop timer */
1034	if (w->reschedule_cb)	1336	if (w->reschedule_cb)
1035	{	1337	{
1036	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1338	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1037
1038	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1339	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1039	downheap ((WT *)periodics, periodiccnt, 0);	1340	downheap (periodics, periodiccnt, 0);
1040	}	1341	}
1041	else if (w->interval)	1342	else if (w->interval)
1042	{	1343	{
1043	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1344	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1345	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1044	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1346	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1045	downheap ((WT *)periodics, periodiccnt, 0);	1347	downheap (periodics, periodiccnt, 0);
1046	}	1348	}
1047	else	1349	else
1048	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1350	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1049		1351
1050	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1352	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1051	}	1353	}
1052	}	1354	}
1053		1355
1054	static void	1356	static void noinline
1055	periodics_reschedule (EV_P)	1357	periodics_reschedule (EV_P)
1056	{	1358	{
1057	int i;	1359	int i;
1058		1360
1059	/* adjust periodics after time jump */	1361	/* adjust periodics after time jump */
1060	for (i = 0; i < periodiccnt; ++i)	1362	for (i = 0; i < periodiccnt; ++i)
1061	{	1363	{
1062	struct ev_periodic *w = periodics [i];	1364	ev_periodic *w = (ev_periodic *)periodics [i];
1063		1365
1064	if (w->reschedule_cb)	1366	if (w->reschedule_cb)
1065	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1367	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1066	else if (w->interval)	1368	else if (w->interval)
1067	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1369	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1068	}	1370	}
1069		1371
1070	/* now rebuild the heap */	1372	/* now rebuild the heap */
1071	for (i = periodiccnt >> 1; i--; )	1373	for (i = periodiccnt >> 1; i--; )
1072	downheap ((WT *)periodics, periodiccnt, i);	1374	downheap (periodics, periodiccnt, i);
1073	}	1375	}
1074	#endif	1376	#endif
1075		1377
1076	inline int	1378	#if EV_IDLE_ENABLE
1077	time_update_monotonic (EV_P)	1379	void inline_size
		1380	idle_reify (EV_P)
1078	{	1381	{
		1382	if (expect_false (idleall))
		1383	{
		1384	int pri;
		1385
		1386	for (pri = NUMPRI; pri--; )
		1387	{
		1388	if (pendingcnt [pri])
		1389	break;
		1390
		1391	if (idlecnt [pri])
		1392	{
		1393	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1394	break;
		1395	}
		1396	}
		1397	}
		1398	}
		1399	#endif
		1400
		1401	void inline_speed
		1402	time_update (EV_P_ ev_tstamp max_block)
		1403	{
		1404	int i;
		1405
		1406	#if EV_USE_MONOTONIC
		1407	if (expect_true (have_monotonic))
		1408	{
		1409	ev_tstamp odiff = rtmn_diff;
		1410
1079	mn_now = get_clock ();	1411	mn_now = get_clock ();
1080		1412
		1413	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1414	/* interpolate in the meantime */
1081	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1415	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1082	{	1416	{
1083	ev_rt_now = rtmn_diff + mn_now;	1417	ev_rt_now = rtmn_diff + mn_now;
1084	return 0;	1418	return;
1085	}	1419	}
1086	else	1420
1087	{
1088	now_floor = mn_now;	1421	now_floor = mn_now;
1089	ev_rt_now = ev_time ();	1422	ev_rt_now = ev_time ();
1090	return 1;
1091	}
1092	}
1093		1423
1094	static void	1424	/* loop a few times, before making important decisions.
1095	time_update (EV_P)	1425	* on the choice of "4": one iteration isn't enough,
1096	{	1426	* in case we get preempted during the calls to
1097	int i;	1427	* ev_time and get_clock. a second call is almost guaranteed
1098		1428	* to succeed in that case, though. and looping a few more times
1099	#if EV_USE_MONOTONIC	1429	* doesn't hurt either as we only do this on time-jumps or
1100	if (expect_true (have_monotonic))	1430	* in the unlikely event of having been preempted here.
1101	{	1431	*/
1102	if (time_update_monotonic (EV_A))	1432	for (i = 4; --i; )
1103	{	1433	{
1104	ev_tstamp odiff = rtmn_diff;
1105
1106	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1107	{
1108	rtmn_diff = ev_rt_now - mn_now;	1434	rtmn_diff = ev_rt_now - mn_now;
1109		1435
1110	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1436	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1111	return; /* all is well */	1437	return; /* all is well */
1112		1438
1113	ev_rt_now = ev_time ();	1439	ev_rt_now = ev_time ();
1114	mn_now = get_clock ();	1440	mn_now = get_clock ();
1115	now_floor = mn_now;	1441	now_floor = mn_now;
1116	}	1442	}
1117		1443
1118	# if EV_PERIODICS	1444	# if EV_PERIODIC_ENABLE
		1445	periodics_reschedule (EV_A);
		1446	# endif
		1447	/* no timer adjustment, as the monotonic clock doesn't jump */
		1448	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1449	}
		1450	else
		1451	#endif
		1452	{
		1453	ev_rt_now = ev_time ();
		1454
		1455	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1456	{
		1457	#if EV_PERIODIC_ENABLE
1119	periodics_reschedule (EV_A);	1458	periodics_reschedule (EV_A);
1120	# endif	1459	#endif
1121	/* no timer adjustment, as the monotonic clock doesn't jump */
1122	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1123	}
1124	}
1125	else
1126	#endif
1127	{
1128	ev_rt_now = ev_time ();
1129
1130	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1131	{
1132	#if EV_PERIODICS
1133	periodics_reschedule (EV_A);
1134	#endif
1135
1136	/* adjust timers. this is easy, as the offset is the same for all */	1460	/* adjust timers. this is easy, as the offset is the same for all of them */
1137	for (i = 0; i < timercnt; ++i)	1461	for (i = 0; i < timercnt; ++i)
1138	((WT)timers [i])->at += ev_rt_now - mn_now;	1462	((WT)timers [i])->at += ev_rt_now - mn_now;
1139	}	1463	}
1140		1464
1141	mn_now = ev_rt_now;	1465	mn_now = ev_rt_now;
…		…
1157	static int loop_done;	1481	static int loop_done;
1158		1482
1159	void	1483	void
1160	ev_loop (EV_P_ int flags)	1484	ev_loop (EV_P_ int flags)
1161	{	1485	{
1162	double block;
1163	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1486	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1487	? EVUNLOOP_ONE
		1488	: EVUNLOOP_CANCEL;
		1489
		1490	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1164		1491
1165	do	1492	do
1166	{	1493	{
		1494	#ifndef _WIN32
		1495	if (expect_false (curpid)) /* penalise the forking check even more */
		1496	if (expect_false (getpid () != curpid))
		1497	{
		1498	curpid = getpid ();
		1499	postfork = 1;
		1500	}
		1501	#endif
		1502
		1503	#if EV_FORK_ENABLE
		1504	/* we might have forked, so queue fork handlers */
		1505	if (expect_false (postfork))
		1506	if (forkcnt)
		1507	{
		1508	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1509	call_pending (EV_A);
		1510	}
		1511	#endif
		1512
1167	/* queue check watchers (and execute them) */	1513	/* queue prepare watchers (and execute them) */
1168	if (expect_false (preparecnt))	1514	if (expect_false (preparecnt))
1169	{	1515	{
1170	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1516	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1171	call_pending (EV_A);	1517	call_pending (EV_A);
1172	}	1518	}
1173		1519
		1520	if (expect_false (!activecnt))
		1521	break;
		1522
1174	/* we might have forked, so reify kernel state if necessary */	1523	/* we might have forked, so reify kernel state if necessary */
1175	if (expect_false (postfork))	1524	if (expect_false (postfork))
1176	loop_fork (EV_A);	1525	loop_fork (EV_A);
1177		1526
1178	/* update fd-related kernel structures */	1527	/* update fd-related kernel structures */
1179	fd_reify (EV_A);	1528	fd_reify (EV_A);
1180		1529
1181	/* calculate blocking time */	1530	/* calculate blocking time */
		1531	{
		1532	ev_tstamp waittime = 0.;
		1533	ev_tstamp sleeptime = 0.;
1182		1534
1183	/* we only need this for !monotonic clock or timers, but as we basically	1535	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1184	always have timers, we just calculate it always */
1185	#if EV_USE_MONOTONIC
1186	if (expect_true (have_monotonic))
1187	time_update_monotonic (EV_A);
1188	else
1189	#endif
1190	{	1536	{
1191	ev_rt_now = ev_time ();	1537	/* update time to cancel out callback processing overhead */
1192	mn_now = ev_rt_now;	1538	time_update (EV_A_ 1e100);
1193	}
1194		1539
1195	if (flags & EVLOOP_NONBLOCK || idlecnt)
1196	block = 0.;
1197	else
1198	{
1199	block = MAX_BLOCKTIME;	1540	waittime = MAX_BLOCKTIME;
1200		1541
1201	if (timercnt)	1542	if (timercnt)
1202	{	1543	{
1203	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1544	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1204	if (block > to) block = to;	1545	if (waittime > to) waittime = to;
1205	}	1546	}
1206		1547
1207	#if EV_PERIODICS	1548	#if EV_PERIODIC_ENABLE
1208	if (periodiccnt)	1549	if (periodiccnt)
1209	{	1550	{
1210	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1551	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1211	if (block > to) block = to;	1552	if (waittime > to) waittime = to;
1212	}	1553	}
1213	#endif	1554	#endif
1214		1555
1215	if (block < 0.) block = 0.;	1556	if (expect_false (waittime < timeout_blocktime))
		1557	waittime = timeout_blocktime;
		1558
		1559	sleeptime = waittime - backend_fudge;
		1560
		1561	if (expect_true (sleeptime > io_blocktime))
		1562	sleeptime = io_blocktime;
		1563
		1564	if (sleeptime)
		1565	{
		1566	ev_sleep (sleeptime);
		1567	waittime -= sleeptime;
		1568	}
1216	}	1569	}
1217		1570
1218	method_poll (EV_A_ block);	1571	++loop_count;
		1572	backend_poll (EV_A_ waittime);
1219		1573
1220	/* update ev_rt_now, do magic */	1574	/* update ev_rt_now, do magic */
1221	time_update (EV_A);	1575	time_update (EV_A_ waittime + sleeptime);
		1576	}
1222		1577
1223	/* queue pending timers and reschedule them */	1578	/* queue pending timers and reschedule them */
1224	timers_reify (EV_A); /* relative timers called last */	1579	timers_reify (EV_A); /* relative timers called last */
1225	#if EV_PERIODICS	1580	#if EV_PERIODIC_ENABLE
1226	periodics_reify (EV_A); /* absolute timers called first */	1581	periodics_reify (EV_A); /* absolute timers called first */
1227	#endif	1582	#endif
1228		1583
		1584	#if EV_IDLE_ENABLE
1229	/* queue idle watchers unless io or timers are pending */	1585	/* queue idle watchers unless other events are pending */
1230	if (idlecnt && !any_pending (EV_A))	1586	idle_reify (EV_A);
1231	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1587	#endif
1232		1588
1233	/* queue check watchers, to be executed first */	1589	/* queue check watchers, to be executed first */
1234	if (checkcnt)	1590	if (expect_false (checkcnt))
1235	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1591	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1236		1592
1237	call_pending (EV_A);	1593	call_pending (EV_A);
		1594
1238	}	1595	}
1239	while (activecnt && !loop_done);	1596	while (expect_true (activecnt && !loop_done));
1240		1597
1241	if (loop_done != 2)	1598	if (loop_done == EVUNLOOP_ONE)
1242	loop_done = 0;	1599	loop_done = EVUNLOOP_CANCEL;
1243	}	1600	}
1244		1601
1245	void	1602	void
1246	ev_unloop (EV_P_ int how)	1603	ev_unloop (EV_P_ int how)
1247	{	1604	{
1248	loop_done = how;	1605	loop_done = how;
1249	}	1606	}
1250		1607
1251	/*****************************************************************************/	1608	/*****************************************************************************/
1252		1609
1253	inline void	1610	void inline_size
1254	wlist_add (WL *head, WL elem)	1611	wlist_add (WL *head, WL elem)
1255	{	1612	{
1256	elem->next = *head;	1613	elem->next = *head;
1257	*head = elem;	1614	*head = elem;
1258	}	1615	}
1259		1616
1260	inline void	1617	void inline_size
1261	wlist_del (WL *head, WL elem)	1618	wlist_del (WL *head, WL elem)
1262	{	1619	{
1263	while (*head)	1620	while (*head)
1264	{	1621	{
1265	if (*head == elem)	1622	if (*head == elem)
…		…
1270		1627
1271	head = &(*head)->next;	1628	head = &(*head)->next;
1272	}	1629	}
1273	}	1630	}
1274		1631
1275	inline void	1632	void inline_speed
1276	ev_clear_pending (EV_P_ W w)	1633	clear_pending (EV_P_ W w)
1277	{	1634	{
1278	if (w->pending)	1635	if (w->pending)
1279	{	1636	{
1280	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1637	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1281	w->pending = 0;	1638	w->pending = 0;
1282	}	1639	}
1283	}	1640	}
1284		1641
1285	inline void	1642	int
		1643	ev_clear_pending (EV_P_ void *w)
		1644	{
		1645	W w_ = (W)w;
		1646	int pending = w_->pending;
		1647
		1648	if (expect_true (pending))
		1649	{
		1650	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1651	w_->pending = 0;
		1652	p->w = 0;
		1653	return p->events;
		1654	}
		1655	else
		1656	return 0;
		1657	}
		1658
		1659	void inline_size
		1660	pri_adjust (EV_P_ W w)
		1661	{
		1662	int pri = w->priority;
		1663	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1664	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1665	w->priority = pri;
		1666	}
		1667
		1668	void inline_speed
1286	ev_start (EV_P_ W w, int active)	1669	ev_start (EV_P_ W w, int active)
1287	{	1670	{
1288	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1671	pri_adjust (EV_A_ w);
1289	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1290
1291	w->active = active;	1672	w->active = active;
1292	ev_ref (EV_A);	1673	ev_ref (EV_A);
1293	}	1674	}
1294		1675
1295	inline void	1676	void inline_size
1296	ev_stop (EV_P_ W w)	1677	ev_stop (EV_P_ W w)
1297	{	1678	{
1298	ev_unref (EV_A);	1679	ev_unref (EV_A);
1299	w->active = 0;	1680	w->active = 0;
1300	}	1681	}
1301		1682
1302	/*****************************************************************************/	1683	/*****************************************************************************/
1303		1684
1304	void	1685	void noinline
1305	ev_io_start (EV_P_ struct ev_io *w)	1686	ev_io_start (EV_P_ ev_io *w)
1306	{	1687	{
1307	int fd = w->fd;	1688	int fd = w->fd;
1308		1689
1309	if (ev_is_active (w))	1690	if (expect_false (ev_is_active (w)))
1310	return;	1691	return;
1311		1692
1312	assert (("ev_io_start called with negative fd", fd >= 0));	1693	assert (("ev_io_start called with negative fd", fd >= 0));
1313		1694
1314	ev_start (EV_A_ (W)w, 1);	1695	ev_start (EV_A_ (W)w, 1);
1315	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1696	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1316	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1697	wlist_add (&anfds[fd].head, (WL)w);
1317		1698
1318	fd_change (EV_A_ fd);	1699	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1700	w->events &= ~EV_IOFDSET;
1319	}	1701	}
1320		1702
1321	void	1703	void noinline
1322	ev_io_stop (EV_P_ struct ev_io *w)	1704	ev_io_stop (EV_P_ ev_io *w)
1323	{	1705	{
1324	ev_clear_pending (EV_A_ (W)w);	1706	clear_pending (EV_A_ (W)w);
1325	if (!ev_is_active (w))	1707	if (expect_false (!ev_is_active (w)))
1326	return;	1708	return;
1327		1709
1328	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1710	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1329		1711
1330	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1712	wlist_del (&anfds[w->fd].head, (WL)w);
1331	ev_stop (EV_A_ (W)w);	1713	ev_stop (EV_A_ (W)w);
1332		1714
1333	fd_change (EV_A_ w->fd);	1715	fd_change (EV_A_ w->fd, 1);
1334	}	1716	}
1335		1717
1336	void	1718	void noinline
1337	ev_timer_start (EV_P_ struct ev_timer *w)	1719	ev_timer_start (EV_P_ ev_timer *w)
1338	{	1720	{
1339	if (ev_is_active (w))	1721	if (expect_false (ev_is_active (w)))
1340	return;	1722	return;
1341		1723
1342	((WT)w)->at += mn_now;	1724	((WT)w)->at += mn_now;
1343		1725
1344	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1726	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1345		1727
1346	ev_start (EV_A_ (W)w, ++timercnt);	1728	ev_start (EV_A_ (W)w, ++timercnt);
1347	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1729	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1348	timers [timercnt - 1] = w;	1730	timers [timercnt - 1] = (WT)w;
1349	upheap ((WT *)timers, timercnt - 1);	1731	upheap (timers, timercnt - 1);
1350		1732
1351	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1733	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1352	}	1734	}
1353		1735
1354	void	1736	void noinline
1355	ev_timer_stop (EV_P_ struct ev_timer *w)	1737	ev_timer_stop (EV_P_ ev_timer *w)
1356	{	1738	{
1357	ev_clear_pending (EV_A_ (W)w);	1739	clear_pending (EV_A_ (W)w);
1358	if (!ev_is_active (w))	1740	if (expect_false (!ev_is_active (w)))
1359	return;	1741	return;
1360		1742
1361	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1743	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1362		1744
1363	if (((W)w)->active < timercnt--)	1745	{
		1746	int active = ((W)w)->active;
		1747
		1748	if (expect_true (--active < --timercnt))
1364	{	1749	{
1365	timers [((W)w)->active - 1] = timers [timercnt];	1750	timers [active] = timers [timercnt];
1366	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1751	adjustheap (timers, timercnt, active);
1367	}	1752	}
		1753	}
1368		1754
1369	((WT)w)->at -= mn_now;	1755	((WT)w)->at -= mn_now;
1370		1756
1371	ev_stop (EV_A_ (W)w);	1757	ev_stop (EV_A_ (W)w);
1372	}	1758	}
1373		1759
1374	void	1760	void noinline
1375	ev_timer_again (EV_P_ struct ev_timer *w)	1761	ev_timer_again (EV_P_ ev_timer *w)
1376	{	1762	{
1377	if (ev_is_active (w))	1763	if (ev_is_active (w))
1378	{	1764	{
1379	if (w->repeat)	1765	if (w->repeat)
1380	{	1766	{
1381	((WT)w)->at = mn_now + w->repeat;	1767	((WT)w)->at = mn_now + w->repeat;
1382	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1768	adjustheap (timers, timercnt, ((W)w)->active - 1);
1383	}	1769	}
1384	else	1770	else
1385	ev_timer_stop (EV_A_ w);	1771	ev_timer_stop (EV_A_ w);
1386	}	1772	}
1387	else if (w->repeat)	1773	else if (w->repeat)
		1774	{
		1775	w->at = w->repeat;
1388	ev_timer_start (EV_A_ w);	1776	ev_timer_start (EV_A_ w);
		1777	}
1389	}	1778	}
1390		1779
1391	#if EV_PERIODICS	1780	#if EV_PERIODIC_ENABLE
1392	void	1781	void noinline
1393	ev_periodic_start (EV_P_ struct ev_periodic *w)	1782	ev_periodic_start (EV_P_ ev_periodic *w)
1394	{	1783	{
1395	if (ev_is_active (w))	1784	if (expect_false (ev_is_active (w)))
1396	return;	1785	return;
1397		1786
1398	if (w->reschedule_cb)	1787	if (w->reschedule_cb)
1399	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1788	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1400	else if (w->interval)	1789	else if (w->interval)
1401	{	1790	{
1402	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1791	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1403	/* this formula differs from the one in periodic_reify because we do not always round up */	1792	/* this formula differs from the one in periodic_reify because we do not always round up */
1404	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1793	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1405	}	1794	}
		1795	else
		1796	((WT)w)->at = w->offset;
1406		1797
1407	ev_start (EV_A_ (W)w, ++periodiccnt);	1798	ev_start (EV_A_ (W)w, ++periodiccnt);
1408	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1799	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1409	periodics [periodiccnt - 1] = w;	1800	periodics [periodiccnt - 1] = (WT)w;
1410	upheap ((WT *)periodics, periodiccnt - 1);	1801	upheap (periodics, periodiccnt - 1);
1411		1802
1412	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1803	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1413	}	1804	}
1414		1805
1415	void	1806	void noinline
1416	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1807	ev_periodic_stop (EV_P_ ev_periodic *w)
1417	{	1808	{
1418	ev_clear_pending (EV_A_ (W)w);	1809	clear_pending (EV_A_ (W)w);
1419	if (!ev_is_active (w))	1810	if (expect_false (!ev_is_active (w)))
1420	return;	1811	return;
1421		1812
1422	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1813	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1423		1814
1424	if (((W)w)->active < periodiccnt--)	1815	{
		1816	int active = ((W)w)->active;
		1817
		1818	if (expect_true (--active < --periodiccnt))
1425	{	1819	{
1426	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1820	periodics [active] = periodics [periodiccnt];
1427	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1821	adjustheap (periodics, periodiccnt, active);
1428	}	1822	}
		1823	}
1429		1824
1430	ev_stop (EV_A_ (W)w);	1825	ev_stop (EV_A_ (W)w);
1431	}	1826	}
1432		1827
1433	void	1828	void noinline
1434	ev_periodic_again (EV_P_ struct ev_periodic *w)	1829	ev_periodic_again (EV_P_ ev_periodic *w)
1435	{	1830	{
1436	/* TODO: use adjustheap and recalculation */	1831	/* TODO: use adjustheap and recalculation */
1437	ev_periodic_stop (EV_A_ w);	1832	ev_periodic_stop (EV_A_ w);
1438	ev_periodic_start (EV_A_ w);	1833	ev_periodic_start (EV_A_ w);
1439	}	1834	}
1440	#endif	1835	#endif
1441		1836
1442	void
1443	ev_idle_start (EV_P_ struct ev_idle *w)
1444	{
1445	if (ev_is_active (w))
1446	return;
1447
1448	ev_start (EV_A_ (W)w, ++idlecnt);
1449	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1450	idles [idlecnt - 1] = w;
1451	}
1452
1453	void
1454	ev_idle_stop (EV_P_ struct ev_idle *w)
1455	{
1456	ev_clear_pending (EV_A_ (W)w);
1457	if (!ev_is_active (w))
1458	return;
1459
1460	idles [((W)w)->active - 1] = idles [--idlecnt];
1461	ev_stop (EV_A_ (W)w);
1462	}
1463
1464	void
1465	ev_prepare_start (EV_P_ struct ev_prepare *w)
1466	{
1467	if (ev_is_active (w))
1468	return;
1469
1470	ev_start (EV_A_ (W)w, ++preparecnt);
1471	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1472	prepares [preparecnt - 1] = w;
1473	}
1474
1475	void
1476	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1477	{
1478	ev_clear_pending (EV_A_ (W)w);
1479	if (!ev_is_active (w))
1480	return;
1481
1482	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1483	ev_stop (EV_A_ (W)w);
1484	}
1485
1486	void
1487	ev_check_start (EV_P_ struct ev_check *w)
1488	{
1489	if (ev_is_active (w))
1490	return;
1491
1492	ev_start (EV_A_ (W)w, ++checkcnt);
1493	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1494	checks [checkcnt - 1] = w;
1495	}
1496
1497	void
1498	ev_check_stop (EV_P_ struct ev_check *w)
1499	{
1500	ev_clear_pending (EV_A_ (W)w);
1501	if (!ev_is_active (w))
1502	return;
1503
1504	checks [((W)w)->active - 1] = checks [--checkcnt];
1505	ev_stop (EV_A_ (W)w);
1506	}
1507
1508	#ifndef SA_RESTART	1837	#ifndef SA_RESTART
1509	# define SA_RESTART 0	1838	# define SA_RESTART 0
1510	#endif	1839	#endif
1511		1840
1512	void	1841	void noinline
1513	ev_signal_start (EV_P_ struct ev_signal *w)	1842	ev_signal_start (EV_P_ ev_signal *w)
1514	{	1843	{
1515	#if EV_MULTIPLICITY	1844	#if EV_MULTIPLICITY
1516	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1845	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1517	#endif	1846	#endif
1518	if (ev_is_active (w))	1847	if (expect_false (ev_is_active (w)))
1519	return;	1848	return;
1520		1849
1521	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1850	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1522		1851
		1852	{
		1853	#ifndef _WIN32
		1854	sigset_t full, prev;
		1855	sigfillset (&full);
		1856	sigprocmask (SIG_SETMASK, &full, &prev);
		1857	#endif
		1858
		1859	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1860
		1861	#ifndef _WIN32
		1862	sigprocmask (SIG_SETMASK, &prev, 0);
		1863	#endif
		1864	}
		1865
1523	ev_start (EV_A_ (W)w, 1);	1866	ev_start (EV_A_ (W)w, 1);
1524	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1525	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1867	wlist_add (&signals [w->signum - 1].head, (WL)w);
1526		1868
1527	if (!((WL)w)->next)	1869	if (!((WL)w)->next)
1528	{	1870	{
1529	#if _WIN32	1871	#if _WIN32
1530	signal (w->signum, sighandler);	1872	signal (w->signum, sighandler);
…		…
1536	sigaction (w->signum, &sa, 0);	1878	sigaction (w->signum, &sa, 0);
1537	#endif	1879	#endif
1538	}	1880	}
1539	}	1881	}
1540		1882
1541	void	1883	void noinline
1542	ev_signal_stop (EV_P_ struct ev_signal *w)	1884	ev_signal_stop (EV_P_ ev_signal *w)
1543	{	1885	{
1544	ev_clear_pending (EV_A_ (W)w);	1886	clear_pending (EV_A_ (W)w);
1545	if (!ev_is_active (w))	1887	if (expect_false (!ev_is_active (w)))
1546	return;	1888	return;
1547		1889
1548	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1890	wlist_del (&signals [w->signum - 1].head, (WL)w);
1549	ev_stop (EV_A_ (W)w);	1891	ev_stop (EV_A_ (W)w);
1550		1892
1551	if (!signals [w->signum - 1].head)	1893	if (!signals [w->signum - 1].head)
1552	signal (w->signum, SIG_DFL);	1894	signal (w->signum, SIG_DFL);
1553	}	1895	}
1554		1896
1555	void	1897	void
1556	ev_child_start (EV_P_ struct ev_child *w)	1898	ev_child_start (EV_P_ ev_child *w)
1557	{	1899	{
1558	#if EV_MULTIPLICITY	1900	#if EV_MULTIPLICITY
1559	assert (("child watchers are only supported in the default loop", loop == default_loop));	1901	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1560	#endif	1902	#endif
1561	if (ev_is_active (w))	1903	if (expect_false (ev_is_active (w)))
1562	return;	1904	return;
1563		1905
1564	ev_start (EV_A_ (W)w, 1);	1906	ev_start (EV_A_ (W)w, 1);
1565	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1907	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1566	}	1908	}
1567		1909
1568	void	1910	void
1569	ev_child_stop (EV_P_ struct ev_child *w)	1911	ev_child_stop (EV_P_ ev_child *w)
1570	{	1912	{
1571	ev_clear_pending (EV_A_ (W)w);	1913	clear_pending (EV_A_ (W)w);
1572	if (!ev_is_active (w))	1914	if (expect_false (!ev_is_active (w)))
1573	return;	1915	return;
1574		1916
1575	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1917	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1576	ev_stop (EV_A_ (W)w);	1918	ev_stop (EV_A_ (W)w);
1577	}	1919	}
1578		1920
		1921	#if EV_STAT_ENABLE
		1922
		1923	# ifdef _WIN32
		1924	# undef lstat
		1925	# define lstat(a,b) _stati64 (a,b)
		1926	# endif
		1927
		1928	#define DEF_STAT_INTERVAL 5.0074891
		1929	#define MIN_STAT_INTERVAL 0.1074891
		1930
		1931	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1932
		1933	#if EV_USE_INOTIFY
		1934	# define EV_INOTIFY_BUFSIZE 8192
		1935
		1936	static void noinline
		1937	infy_add (EV_P_ ev_stat *w)
		1938	{
		1939	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);
		1940
		1941	if (w->wd < 0)
		1942	{
		1943	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1944
		1945	/* monitor some parent directory for speedup hints */
		1946	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1947	{
		1948	char path [4096];
		1949	strcpy (path, w->path);
		1950
		1951	do
		1952	{
		1953	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1954	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1955
		1956	char *pend = strrchr (path, '/');
		1957
		1958	if (!pend)
		1959	break; /* whoops, no '/', complain to your admin */
		1960
		1961	*pend = 0;
		1962	w->wd = inotify_add_watch (fs_fd, path, mask);
		1963	}
		1964	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1965	}
		1966	}
		1967	else
		1968	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1969
		1970	if (w->wd >= 0)
		1971	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1972	}
		1973
		1974	static void noinline
		1975	infy_del (EV_P_ ev_stat *w)
		1976	{
		1977	int slot;
		1978	int wd = w->wd;
		1979
		1980	if (wd < 0)
		1981	return;
		1982
		1983	w->wd = -2;
		1984	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1985	wlist_del (&fs_hash [slot].head, (WL)w);
		1986
		1987	/* remove this watcher, if others are watching it, they will rearm */
		1988	inotify_rm_watch (fs_fd, wd);
		1989	}
		1990
		1991	static void noinline
		1992	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1993	{
		1994	if (slot < 0)
		1995	/* overflow, need to check for all hahs slots */
		1996	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1997	infy_wd (EV_A_ slot, wd, ev);
		1998	else
		1999	{
		2000	WL w_;
		2001
		2002	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		2003	{
		2004	ev_stat *w = (ev_stat *)w_;
		2005	w_ = w_->next; /* lets us remove this watcher and all before it */
		2006
		2007	if (w->wd == wd || wd == -1)
		2008	{
		2009	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		2010	{
		2011	w->wd = -1;
		2012	infy_add (EV_A_ w); /* re-add, no matter what */
		2013	}
		2014
		2015	stat_timer_cb (EV_A_ &w->timer, 0);
		2016	}
		2017	}
		2018	}
		2019	}
		2020
		2021	static void
		2022	infy_cb (EV_P_ ev_io *w, int revents)
		2023	{
		2024	char buf [EV_INOTIFY_BUFSIZE];
		2025	struct inotify_event *ev = (struct inotify_event *)buf;
		2026	int ofs;
		2027	int len = read (fs_fd, buf, sizeof (buf));
		2028
		2029	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2030	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2031	}
		2032
		2033	void inline_size
		2034	infy_init (EV_P)
		2035	{
		2036	if (fs_fd != -2)
		2037	return;
		2038
		2039	fs_fd = inotify_init ();
		2040
		2041	if (fs_fd >= 0)
		2042	{
		2043	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2044	ev_set_priority (&fs_w, EV_MAXPRI);
		2045	ev_io_start (EV_A_ &fs_w);
		2046	}
		2047	}
		2048
		2049	void inline_size
		2050	infy_fork (EV_P)
		2051	{
		2052	int slot;
		2053
		2054	if (fs_fd < 0)
		2055	return;
		2056
		2057	close (fs_fd);
		2058	fs_fd = inotify_init ();
		2059
		2060	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2061	{
		2062	WL w_ = fs_hash [slot].head;
		2063	fs_hash [slot].head = 0;
		2064
		2065	while (w_)
		2066	{
		2067	ev_stat *w = (ev_stat *)w_;
		2068	w_ = w_->next; /* lets us add this watcher */
		2069
		2070	w->wd = -1;
		2071
		2072	if (fs_fd >= 0)
		2073	infy_add (EV_A_ w); /* re-add, no matter what */
		2074	else
		2075	ev_timer_start (EV_A_ &w->timer);
		2076	}
		2077
		2078	}
		2079	}
		2080
		2081	#endif
		2082
		2083	void
		2084	ev_stat_stat (EV_P_ ev_stat *w)
		2085	{
		2086	if (lstat (w->path, &w->attr) < 0)
		2087	w->attr.st_nlink = 0;
		2088	else if (!w->attr.st_nlink)
		2089	w->attr.st_nlink = 1;
		2090	}
		2091
		2092	static void noinline
		2093	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2094	{
		2095	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2096
		2097	/* we copy this here each the time so that */
		2098	/* prev has the old value when the callback gets invoked */
		2099	w->prev = w->attr;
		2100	ev_stat_stat (EV_A_ w);
		2101
		2102	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2103	if (
		2104	w->prev.st_dev != w->attr.st_dev
		2105	|| w->prev.st_ino != w->attr.st_ino
		2106	|| w->prev.st_mode != w->attr.st_mode
		2107	|| w->prev.st_nlink != w->attr.st_nlink
		2108	|| w->prev.st_uid != w->attr.st_uid
		2109	|| w->prev.st_gid != w->attr.st_gid
		2110	|| w->prev.st_rdev != w->attr.st_rdev
		2111	|| w->prev.st_size != w->attr.st_size
		2112	|| w->prev.st_atime != w->attr.st_atime
		2113	|| w->prev.st_mtime != w->attr.st_mtime
		2114	|| w->prev.st_ctime != w->attr.st_ctime
		2115	) {
		2116	#if EV_USE_INOTIFY
		2117	infy_del (EV_A_ w);
		2118	infy_add (EV_A_ w);
		2119	ev_stat_stat (EV_A_ w); /* avoid race... */
		2120	#endif
		2121
		2122	ev_feed_event (EV_A_ w, EV_STAT);
		2123	}
		2124	}
		2125
		2126	void
		2127	ev_stat_start (EV_P_ ev_stat *w)
		2128	{
		2129	if (expect_false (ev_is_active (w)))
		2130	return;
		2131
		2132	/* since we use memcmp, we need to clear any padding data etc. */
		2133	memset (&w->prev, 0, sizeof (ev_statdata));
		2134	memset (&w->attr, 0, sizeof (ev_statdata));
		2135
		2136	ev_stat_stat (EV_A_ w);
		2137
		2138	if (w->interval < MIN_STAT_INTERVAL)
		2139	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2140
		2141	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2142	ev_set_priority (&w->timer, ev_priority (w));
		2143
		2144	#if EV_USE_INOTIFY
		2145	infy_init (EV_A);
		2146
		2147	if (fs_fd >= 0)
		2148	infy_add (EV_A_ w);
		2149	else
		2150	#endif
		2151	ev_timer_start (EV_A_ &w->timer);
		2152
		2153	ev_start (EV_A_ (W)w, 1);
		2154	}
		2155
		2156	void
		2157	ev_stat_stop (EV_P_ ev_stat *w)
		2158	{
		2159	clear_pending (EV_A_ (W)w);
		2160	if (expect_false (!ev_is_active (w)))
		2161	return;
		2162
		2163	#if EV_USE_INOTIFY
		2164	infy_del (EV_A_ w);
		2165	#endif
		2166	ev_timer_stop (EV_A_ &w->timer);
		2167
		2168	ev_stop (EV_A_ (W)w);
		2169	}
		2170	#endif
		2171
		2172	#if EV_IDLE_ENABLE
		2173	void
		2174	ev_idle_start (EV_P_ ev_idle *w)
		2175	{
		2176	if (expect_false (ev_is_active (w)))
		2177	return;
		2178
		2179	pri_adjust (EV_A_ (W)w);
		2180
		2181	{
		2182	int active = ++idlecnt [ABSPRI (w)];
		2183
		2184	++idleall;
		2185	ev_start (EV_A_ (W)w, active);
		2186
		2187	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2188	idles [ABSPRI (w)][active - 1] = w;
		2189	}
		2190	}
		2191
		2192	void
		2193	ev_idle_stop (EV_P_ ev_idle *w)
		2194	{
		2195	clear_pending (EV_A_ (W)w);
		2196	if (expect_false (!ev_is_active (w)))
		2197	return;
		2198
		2199	{
		2200	int active = ((W)w)->active;
		2201
		2202	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2203	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2204
		2205	ev_stop (EV_A_ (W)w);
		2206	--idleall;
		2207	}
		2208	}
		2209	#endif
		2210
		2211	void
		2212	ev_prepare_start (EV_P_ ev_prepare *w)
		2213	{
		2214	if (expect_false (ev_is_active (w)))
		2215	return;
		2216
		2217	ev_start (EV_A_ (W)w, ++preparecnt);
		2218	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2219	prepares [preparecnt - 1] = w;
		2220	}
		2221
		2222	void
		2223	ev_prepare_stop (EV_P_ ev_prepare *w)
		2224	{
		2225	clear_pending (EV_A_ (W)w);
		2226	if (expect_false (!ev_is_active (w)))
		2227	return;
		2228
		2229	{
		2230	int active = ((W)w)->active;
		2231	prepares [active - 1] = prepares [--preparecnt];
		2232	((W)prepares [active - 1])->active = active;
		2233	}
		2234
		2235	ev_stop (EV_A_ (W)w);
		2236	}
		2237
		2238	void
		2239	ev_check_start (EV_P_ ev_check *w)
		2240	{
		2241	if (expect_false (ev_is_active (w)))
		2242	return;
		2243
		2244	ev_start (EV_A_ (W)w, ++checkcnt);
		2245	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2246	checks [checkcnt - 1] = w;
		2247	}
		2248
		2249	void
		2250	ev_check_stop (EV_P_ ev_check *w)
		2251	{
		2252	clear_pending (EV_A_ (W)w);
		2253	if (expect_false (!ev_is_active (w)))
		2254	return;
		2255
		2256	{
		2257	int active = ((W)w)->active;
		2258	checks [active - 1] = checks [--checkcnt];
		2259	((W)checks [active - 1])->active = active;
		2260	}
		2261
		2262	ev_stop (EV_A_ (W)w);
		2263	}
		2264
		2265	#if EV_EMBED_ENABLE
		2266	void noinline
		2267	ev_embed_sweep (EV_P_ ev_embed *w)
		2268	{
		2269	ev_loop (w->other, EVLOOP_NONBLOCK);
		2270	}
		2271
		2272	static void
		2273	embed_io_cb (EV_P_ ev_io *io, int revents)
		2274	{
		2275	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2276
		2277	if (ev_cb (w))
		2278	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2279	else
		2280	ev_loop (w->other, EVLOOP_NONBLOCK);
		2281	}
		2282
		2283	static void
		2284	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2285	{
		2286	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2287
		2288	{
		2289	struct ev_loop *loop = w->other;
		2290
		2291	while (fdchangecnt)
		2292	{
		2293	fd_reify (EV_A);
		2294	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2295	}
		2296	}
		2297	}
		2298
		2299	#if 0
		2300	static void
		2301	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2302	{
		2303	ev_idle_stop (EV_A_ idle);
		2304	}
		2305	#endif
		2306
		2307	void
		2308	ev_embed_start (EV_P_ ev_embed *w)
		2309	{
		2310	if (expect_false (ev_is_active (w)))
		2311	return;
		2312
		2313	{
		2314	struct ev_loop *loop = w->other;
		2315	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2316	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
		2317	}
		2318
		2319	ev_set_priority (&w->io, ev_priority (w));
		2320	ev_io_start (EV_A_ &w->io);
		2321
		2322	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2323	ev_set_priority (&w->prepare, EV_MINPRI);
		2324	ev_prepare_start (EV_A_ &w->prepare);
		2325
		2326	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2327
		2328	ev_start (EV_A_ (W)w, 1);
		2329	}
		2330
		2331	void
		2332	ev_embed_stop (EV_P_ ev_embed *w)
		2333	{
		2334	clear_pending (EV_A_ (W)w);
		2335	if (expect_false (!ev_is_active (w)))
		2336	return;
		2337
		2338	ev_io_stop (EV_A_ &w->io);
		2339	ev_prepare_stop (EV_A_ &w->prepare);
		2340
		2341	ev_stop (EV_A_ (W)w);
		2342	}
		2343	#endif
		2344
		2345	#if EV_FORK_ENABLE
		2346	void
		2347	ev_fork_start (EV_P_ ev_fork *w)
		2348	{
		2349	if (expect_false (ev_is_active (w)))
		2350	return;
		2351
		2352	ev_start (EV_A_ (W)w, ++forkcnt);
		2353	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2354	forks [forkcnt - 1] = w;
		2355	}
		2356
		2357	void
		2358	ev_fork_stop (EV_P_ ev_fork *w)
		2359	{
		2360	clear_pending (EV_A_ (W)w);
		2361	if (expect_false (!ev_is_active (w)))
		2362	return;
		2363
		2364	{
		2365	int active = ((W)w)->active;
		2366	forks [active - 1] = forks [--forkcnt];
		2367	((W)forks [active - 1])->active = active;
		2368	}
		2369
		2370	ev_stop (EV_A_ (W)w);
		2371	}
		2372	#endif
		2373
1579	/*****************************************************************************/	2374	/*****************************************************************************/
1580		2375
1581	struct ev_once	2376	struct ev_once
1582	{	2377	{
1583	struct ev_io io;	2378	ev_io io;
1584	struct ev_timer to;	2379	ev_timer to;
1585	void (*cb)(int revents, void *arg);	2380	void (*cb)(int revents, void *arg);
1586	void *arg;	2381	void *arg;
1587	};	2382	};
1588		2383
1589	static void	2384	static void
…		…
1598		2393
1599	cb (revents, arg);	2394	cb (revents, arg);
1600	}	2395	}
1601		2396
1602	static void	2397	static void
1603	once_cb_io (EV_P_ struct ev_io *w, int revents)	2398	once_cb_io (EV_P_ ev_io *w, int revents)
1604	{	2399	{
1605	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2400	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1606	}	2401	}
1607		2402
1608	static void	2403	static void
1609	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2404	once_cb_to (EV_P_ ev_timer *w, int revents)
1610	{	2405	{
1611	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2406	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1612	}	2407	}
1613		2408
1614	void	2409	void
1615	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2410	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1616	{	2411	{
1617	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	2412	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1618		2413
1619	if (!once)	2414	if (expect_false (!once))
		2415	{
1620	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2416	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1621	else	2417	return;
1622	{	2418	}
		2419
1623	once->cb = cb;	2420	once->cb = cb;
1624	once->arg = arg;	2421	once->arg = arg;
1625		2422
1626	ev_init (&once->io, once_cb_io);	2423	ev_init (&once->io, once_cb_io);
1627	if (fd >= 0)	2424	if (fd >= 0)
1628	{	2425	{
1629	ev_io_set (&once->io, fd, events);	2426	ev_io_set (&once->io, fd, events);
1630	ev_io_start (EV_A_ &once->io);	2427	ev_io_start (EV_A_ &once->io);
1631	}	2428	}
1632		2429
1633	ev_init (&once->to, once_cb_to);	2430	ev_init (&once->to, once_cb_to);
1634	if (timeout >= 0.)	2431	if (timeout >= 0.)
1635	{	2432	{
1636	ev_timer_set (&once->to, timeout, 0.);	2433	ev_timer_set (&once->to, timeout, 0.);
1637	ev_timer_start (EV_A_ &once->to);	2434	ev_timer_start (EV_A_ &once->to);
1638	}
1639	}	2435	}
1640	}	2436	}
		2437
		2438	#if EV_MULTIPLICITY
		2439	#include "ev_wrap.h"
		2440	#endif
1641		2441
1642	#ifdef __cplusplus	2442	#ifdef __cplusplus
1643	}	2443	}
1644	#endif	2444	#endif
1645		2445

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines