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Comparing libev/ev.c (file contents):
Revision 1.97 by root, Sun Nov 11 01:53:07 2007 UTC vs.
Revision 1.194 by root, Sat Dec 22 07:03:31 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 && 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
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	131	#ifdef EV_H
141	# include EV_H	132	# include EV_H
142	#else	133	#else
143	# include "ev.h"	134	# include "ev.h"
144	#endif	135	#endif
145		136
		137	#ifndef _WIN32
		138	# include <sys/time.h>
		139	# include <sys/wait.h>
		140	# include <unistd.h>
		141	#else
		142	# define WIN32_LEAN_AND_MEAN
		143	# include <windows.h>
		144	# ifndef EV_SELECT_IS_WINSOCKET
		145	# define EV_SELECT_IS_WINSOCKET 1
		146	# endif
		147	#endif
		148
		149	/**/
		150
		151	#ifndef EV_USE_MONOTONIC
		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
		161	#endif
		162
		163	#ifndef EV_USE_SELECT
		164	# define EV_USE_SELECT 1
		165	#endif
		166
		167	#ifndef EV_USE_POLL
		168	# ifdef _WIN32
		169	# define EV_USE_POLL 0
		170	# else
		171	# define EV_USE_POLL 1
		172	# endif
		173	#endif
		174
		175	#ifndef EV_USE_EPOLL
		176	# define EV_USE_EPOLL 0
		177	#endif
		178
		179	#ifndef EV_USE_KQUEUE
		180	# define EV_USE_KQUEUE 0
		181	#endif
		182
		183	#ifndef EV_USE_PORT
		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
		205	#endif
		206
		207	/**/
		208
		209	#ifndef CLOCK_MONOTONIC
		210	# undef EV_USE_MONOTONIC
		211	# define EV_USE_MONOTONIC 0
		212	#endif
		213
		214	#ifndef CLOCK_REALTIME
		215	# undef EV_USE_REALTIME
		216	# define EV_USE_REALTIME 0
		217	#endif
		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
		234	#if EV_SELECT_IS_WINSOCKET
		235	# include <winsock.h>
		236	#endif
		237
		238	/**/
		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
		250	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
		251	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
		252	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
		253
146	#if __GNUC__ >= 3	254	#if __GNUC__ >= 4
147	# define expect(expr,value) __builtin_expect ((expr),(value))	255	# define expect(expr,value) __builtin_expect ((expr),(value))
148	# define inline inline	256	# define noinline __attribute__ ((noinline))
149	#else	257	#else
150	# define expect(expr,value) (expr)	258	# define expect(expr,value) (expr)
151	# define inline static	259	# define noinline
		260	# if __STDC_VERSION__ < 199901L
		261	# define inline
		262	# endif
152	#endif	263	#endif
153		264
154	#define expect_false(expr) expect ((expr) != 0, 0)	265	#define expect_false(expr) expect ((expr) != 0, 0)
155	#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
156		274
157	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	275	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
158	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	276	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
159		277
		278	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		279	#define EMPTY2(a,b) /* used to suppress some warnings */
		280
160	typedef struct ev_watcher *W;	281	typedef ev_watcher *W;
161	typedef struct ev_watcher_list *WL;	282	typedef ev_watcher_list *WL;
162	typedef struct ev_watcher_time *WT;	283	typedef ev_watcher_time *WT;
163		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 */
164	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	287	static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
165		288
		289	#ifdef _WIN32
166	#include "ev_win32.c"	290	# include "ev_win32.c"
		291	#endif
167		292
168	/*****************************************************************************/	293	/*****************************************************************************/
169		294
170	static void (*syserr_cb)(const char *msg);	295	static void (*syserr_cb)(const char *msg);
171		296
		297	void
172	void ev_set_syserr_cb (void (*cb)(const char *msg))	298	ev_set_syserr_cb (void (*cb)(const char *msg))
173	{	299	{
174	syserr_cb = cb;	300	syserr_cb = cb;
175	}	301	}
176		302
177	static void	303	static void noinline
178	syserr (const char *msg)	304	syserr (const char *msg)
179	{	305	{
180	if (!msg)	306	if (!msg)
181	msg = "(libev) system error";	307	msg = "(libev) system error";
182		308
…		…
189	}	315	}
190	}	316	}
191		317
192	static void *(*alloc)(void *ptr, long size);	318	static void *(*alloc)(void *ptr, long size);
193		319
		320	void
194	void ev_set_allocator (void *(*cb)(void *ptr, long size))	321	ev_set_allocator (void *(*cb)(void *ptr, long size))
195	{	322	{
196	alloc = cb;	323	alloc = cb;
197	}	324	}
198		325
199	static void *	326	inline_speed void *
200	ev_realloc (void *ptr, long size)	327	ev_realloc (void *ptr, long size)
201	{	328	{
202	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	329	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
203		330
204	if (!ptr && size)	331	if (!ptr && size)
…		…
218	typedef struct	345	typedef struct
219	{	346	{
220	WL head;	347	WL head;
221	unsigned char events;	348	unsigned char events;
222	unsigned char reify;	349	unsigned char reify;
		350	#if EV_SELECT_IS_WINSOCKET
		351	SOCKET handle;
		352	#endif
223	} ANFD;	353	} ANFD;
224		354
225	typedef struct	355	typedef struct
226	{	356	{
227	W w;	357	W w;
228	int events;	358	int events;
229	} ANPENDING;	359	} ANPENDING;
230		360
		361	#if EV_USE_INOTIFY
		362	typedef struct
		363	{
		364	WL head;
		365	} ANFS;
		366	#endif
		367
231	#if EV_MULTIPLICITY	368	#if EV_MULTIPLICITY
232		369
233	struct ev_loop	370	struct ev_loop
234	{	371	{
235	ev_tstamp ev_rt_now;	372	ev_tstamp ev_rt_now;
		373	#define ev_rt_now ((loop)->ev_rt_now)
236	#define VAR(name,decl) decl;	374	#define VAR(name,decl) decl;
237	#include "ev_vars.h"	375	#include "ev_vars.h"
238	#undef VAR	376	#undef VAR
239	};	377	};
240	#include "ev_wrap.h"	378	#include "ev_wrap.h"
241		379
242	struct ev_loop default_loop_struct;	380	static struct ev_loop default_loop_struct;
243	static struct ev_loop *default_loop;	381	struct ev_loop *ev_default_loop_ptr;
244		382
245	#else	383	#else
246		384
247	ev_tstamp ev_rt_now;	385	ev_tstamp ev_rt_now;
248	#define VAR(name,decl) static decl;	386	#define VAR(name,decl) static decl;
249	#include "ev_vars.h"	387	#include "ev_vars.h"
250	#undef VAR	388	#undef VAR
251		389
252	static int default_loop;	390	static int ev_default_loop_ptr;
253		391
254	#endif	392	#endif
255		393
256	/*****************************************************************************/	394	/*****************************************************************************/
257		395
…		…
267	gettimeofday (&tv, 0);	405	gettimeofday (&tv, 0);
268	return tv.tv_sec + tv.tv_usec * 1e-6;	406	return tv.tv_sec + tv.tv_usec * 1e-6;
269	#endif	407	#endif
270	}	408	}
271		409
272	inline ev_tstamp	410	ev_tstamp inline_size
273	get_clock (void)	411	get_clock (void)
274	{	412	{
275	#if EV_USE_MONOTONIC	413	#if EV_USE_MONOTONIC
276	if (expect_true (have_monotonic))	414	if (expect_true (have_monotonic))
277	{	415	{
…		…
290	{	428	{
291	return ev_rt_now;	429	return ev_rt_now;
292	}	430	}
293	#endif	431	#endif
294		432
295	#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	}
296		487
297	#define array_needsize(type,base,cur,cnt,init) \	488	#define array_needsize(type,base,cur,cnt,init) \
298	if (expect_false ((cnt) > cur)) \	489	if (expect_false ((cnt) > (cur))) \
299	{ \	490	{ \
300	int newcnt = cur; \	491	int ocur_ = (cur); \
301	do \	492	(base) = (type *)array_realloc \
302	{ \	493	(sizeof (type), (base), &(cur), (cnt)); \
303	newcnt = array_roundsize (type, newcnt << 1); \	494	init ((base) + (ocur_), (cur) - ocur_); \
304	} \
305	while ((cnt) > newcnt); \
306	\
307	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
308	init (base + cur, newcnt - cur); \
309	cur = newcnt; \
310	}	495	}
311		496
		497	#if 0
312	#define array_slim(type,stem) \	498	#define array_slim(type,stem) \
313	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	499	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
314	{ \	500	{ \
315	stem ## max = array_roundsize (stem ## cnt >> 1); \	501	stem ## max = array_roundsize (stem ## cnt >> 1); \
316	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	502	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
317	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	503	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
318	}	504	}
319		505	#endif
320	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
321	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
322	#define array_free_microshit(stem) \
323	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
324		506
325	#define array_free(stem, idx) \	507	#define array_free(stem, idx) \
326	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;
327		509
328	/*****************************************************************************/	510	/*****************************************************************************/
329		511
330	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
331	anfds_init (ANFD *base, int count)	541	anfds_init (ANFD *base, int count)
332	{	542	{
333	while (count--)	543	while (count--)
334	{	544	{
335	base->head = 0;	545	base->head = 0;
…		…
338		548
339	++base;	549	++base;
340	}	550	}
341	}	551	}
342		552
343	void	553	void inline_speed
344	ev_feed_event (EV_P_ void *w, int revents)
345	{
346	W w_ = (W)w;
347
348	if (w_->pending)
349	{
350	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
351	return;
352	}
353
354	w_->pending = ++pendingcnt [ABSPRI (w_)];
355	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
356	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
357	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
358	}
359
360	static void
361	queue_events (EV_P_ W *events, int eventcnt, int type)
362	{
363	int i;
364
365	for (i = 0; i < eventcnt; ++i)
366	ev_feed_event (EV_A_ events [i], type);
367	}
368
369	inline void
370	fd_event (EV_P_ int fd, int revents)	554	fd_event (EV_P_ int fd, int revents)
371	{	555	{
372	ANFD *anfd = anfds + fd;	556	ANFD *anfd = anfds + fd;
373	struct ev_io *w;	557	ev_io *w;
374		558
375	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)
376	{	560	{
377	int ev = w->events & revents;	561	int ev = w->events & revents;
378		562
379	if (ev)	563	if (ev)
380	ev_feed_event (EV_A_ (W)w, ev);	564	ev_feed_event (EV_A_ (W)w, ev);
…		…
382	}	566	}
383		567
384	void	568	void
385	ev_feed_fd_event (EV_P_ int fd, int revents)	569	ev_feed_fd_event (EV_P_ int fd, int revents)
386	{	570	{
		571	if (fd >= 0 && fd < anfdmax)
387	fd_event (EV_A_ fd, revents);	572	fd_event (EV_A_ fd, revents);
388	}	573	}
389		574
390	/*****************************************************************************/	575	void inline_size
391
392	static void
393	fd_reify (EV_P)	576	fd_reify (EV_P)
394	{	577	{
395	int i;	578	int i;
396		579
397	for (i = 0; i < fdchangecnt; ++i)	580	for (i = 0; i < fdchangecnt; ++i)
398	{	581	{
399	int fd = fdchanges [i];	582	int fd = fdchanges [i];
400	ANFD *anfd = anfds + fd;	583	ANFD *anfd = anfds + fd;
401	struct ev_io *w;	584	ev_io *w;
402		585
403	int events = 0;	586	unsigned char events = 0;
404		587
405	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)
406	events |= w->events;	589	events |= (unsigned char)w->events;
407		590
		591	#if EV_SELECT_IS_WINSOCKET
		592	if (events)
		593	{
		594	unsigned long argp;
		595	anfd->handle = _get_osfhandle (fd);
		596	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		597	}
		598	#endif
		599
		600	{
		601	unsigned char o_events = anfd->events;
		602	unsigned char o_reify = anfd->reify;
		603
408	anfd->reify = 0;	604	anfd->reify = 0;
409
410	method_modify (EV_A_ fd, anfd->events, events);
411	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	}
412	}	610	}
413		611
414	fdchangecnt = 0;	612	fdchangecnt = 0;
415	}	613	}
416		614
417	static void	615	void inline_size
418	fd_change (EV_P_ int fd)	616	fd_change (EV_P_ int fd, int flags)
419	{	617	{
420	if (anfds [fd].reify)	618	unsigned char reify = anfds [fd].reify;
421	return;
422
423	anfds [fd].reify = 1;	619	anfds [fd].reify |= flags;
424		620
		621	if (expect_true (!reify))
		622	{
425	++fdchangecnt;	623	++fdchangecnt;
426	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	624	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
427	fdchanges [fdchangecnt - 1] = fd;	625	fdchanges [fdchangecnt - 1] = fd;
		626	}
428	}	627	}
429		628
430	static void	629	void inline_speed
431	fd_kill (EV_P_ int fd)	630	fd_kill (EV_P_ int fd)
432	{	631	{
433	struct ev_io *w;	632	ev_io *w;
434		633
435	while ((w = (struct ev_io *)anfds [fd].head))	634	while ((w = (ev_io *)anfds [fd].head))
436	{	635	{
437	ev_io_stop (EV_A_ w);	636	ev_io_stop (EV_A_ w);
438	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);
439	}	638	}
440	}	639	}
441		640
442	static int	641	int inline_size
443	fd_valid (int fd)	642	fd_valid (int fd)
444	{	643	{
445	#ifdef WIN32	644	#ifdef _WIN32
446	return !!win32_get_osfhandle (fd);	645	return _get_osfhandle (fd) != -1;
447	#else	646	#else
448	return fcntl (fd, F_GETFD) != -1;	647	return fcntl (fd, F_GETFD) != -1;
449	#endif	648	#endif
450	}	649	}
451		650
452	/* called on EBADF to verify fds */	651	/* called on EBADF to verify fds */
453	static void	652	static void noinline
454	fd_ebadf (EV_P)	653	fd_ebadf (EV_P)
455	{	654	{
456	int fd;	655	int fd;
457		656
458	for (fd = 0; fd < anfdmax; ++fd)	657	for (fd = 0; fd < anfdmax; ++fd)
…		…
460	if (!fd_valid (fd) == -1 && errno == EBADF)	659	if (!fd_valid (fd) == -1 && errno == EBADF)
461	fd_kill (EV_A_ fd);	660	fd_kill (EV_A_ fd);
462	}	661	}
463		662
464	/* 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 */
465	static void	664	static void noinline
466	fd_enomem (EV_P)	665	fd_enomem (EV_P)
467	{	666	{
468	int fd;	667	int fd;
469		668
470	for (fd = anfdmax; fd--; )	669	for (fd = anfdmax; fd--; )
…		…
473	fd_kill (EV_A_ fd);	672	fd_kill (EV_A_ fd);
474	return;	673	return;
475	}	674	}
476	}	675	}
477		676
478	/* 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 */
479	static void	678	static void noinline
480	fd_rearm_all (EV_P)	679	fd_rearm_all (EV_P)
481	{	680	{
482	int fd;	681	int fd;
483		682
484	/* this should be highly optimised to not do anything but set a flag */
485	for (fd = 0; fd < anfdmax; ++fd)	683	for (fd = 0; fd < anfdmax; ++fd)
486	if (anfds [fd].events)	684	if (anfds [fd].events)
487	{	685	{
488	anfds [fd].events = 0;	686	anfds [fd].events = 0;
489	fd_change (EV_A_ fd);	687	fd_change (EV_A_ fd, EV_IOFDSET | 1);
490	}	688	}
491	}	689	}
492		690
493	/*****************************************************************************/	691	/*****************************************************************************/
494		692
495	static void	693	void inline_speed
496	upheap (WT *heap, int k)	694	upheap (WT *heap, int k)
497	{	695	{
498	WT w = heap [k];	696	WT w = heap [k];
499		697
500	while (k && heap [k >> 1]->at > w->at)	698	while (k)
501	{	699	{
		700	int p = (k - 1) >> 1;
		701
		702	if (heap [p]->at <= w->at)
		703	break;
		704
502	heap [k] = heap [k >> 1];	705	heap [k] = heap [p];
503	((W)heap [k])->active = k + 1;	706	((W)heap [k])->active = k + 1;
504	k >>= 1;	707	k = p;
505	}	708	}
506		709
507	heap [k] = w;	710	heap [k] = w;
508	((W)heap [k])->active = k + 1;	711	((W)heap [k])->active = k + 1;
509
510	}	712	}
511		713
512	static void	714	void inline_speed
513	downheap (WT *heap, int N, int k)	715	downheap (WT *heap, int N, int k)
514	{	716	{
515	WT w = heap [k];	717	WT w = heap [k];
516		718
517	while (k < (N >> 1))	719	for (;;)
518	{	720	{
519	int j = k << 1;	721	int c = (k << 1) + 1;
520		722
521	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	723	if (c >= N)
522	++j;
523
524	if (w->at <= heap [j]->at)
525	break;	724	break;
526		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
527	heap [k] = heap [j];	732	heap [k] = heap [c];
528	((W)heap [k])->active = k + 1;	733	((W)heap [k])->active = k + 1;
		734
529	k = j;	735	k = c;
530	}	736	}
531		737
532	heap [k] = w;	738	heap [k] = w;
533	((W)heap [k])->active = k + 1;	739	((W)heap [k])->active = k + 1;
534	}	740	}
535		741
536	inline void	742	void inline_size
537	adjustheap (WT *heap, int N, int k, ev_tstamp at)	743	adjustheap (WT *heap, int N, int k)
538	{	744	{
539	ev_tstamp old_at = heap [k]->at;	745	upheap (heap, k);
540	heap [k]->at = at;
541
542	if (old_at < at)
543	downheap (heap, N, k);	746	downheap (heap, N, k);
544	else
545	upheap (heap, k);
546	}	747	}
547		748
548	/*****************************************************************************/	749	/*****************************************************************************/
549		750
550	typedef struct	751	typedef struct
…		…
556	static ANSIG *signals;	757	static ANSIG *signals;
557	static int signalmax;	758	static int signalmax;
558		759
559	static int sigpipe [2];	760	static int sigpipe [2];
560	static sig_atomic_t volatile gotsig;	761	static sig_atomic_t volatile gotsig;
561	static struct ev_io sigev;	762	static ev_io sigev;
562		763
563	static void	764	void inline_size
564	signals_init (ANSIG *base, int count)	765	signals_init (ANSIG *base, int count)
565	{	766	{
566	while (count--)	767	while (count--)
567	{	768	{
568	base->head = 0;	769	base->head = 0;
…		…
573	}	774	}
574		775
575	static void	776	static void
576	sighandler (int signum)	777	sighandler (int signum)
577	{	778	{
578	#if WIN32	779	#if _WIN32
579	signal (signum, sighandler);	780	signal (signum, sighandler);
580	#endif	781	#endif
581		782
582	signals [signum - 1].gotsig = 1;	783	signals [signum - 1].gotsig = 1;
583		784
584	if (!gotsig)	785	if (!gotsig)
585	{	786	{
586	int old_errno = errno;	787	int old_errno = errno;
587	gotsig = 1;	788	gotsig = 1;
588	#ifdef WIN32
589	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
590	#else
591	write (sigpipe [1], &signum, 1);	789	write (sigpipe [1], &signum, 1);
592	#endif
593	errno = old_errno;	790	errno = old_errno;
594	}	791	}
595	}	792	}
596		793
597	void	794	void noinline
598	ev_feed_signal_event (EV_P_ int signum)	795	ev_feed_signal_event (EV_P_ int signum)
599	{	796	{
600	WL w;	797	WL w;
601		798
602	#if EV_MULTIPLICITY	799	#if EV_MULTIPLICITY
603	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));
604	#endif	801	#endif
605		802
606	--signum;	803	--signum;
607		804
608	if (signum < 0 || signum >= signalmax)	805	if (signum < 0 || signum >= signalmax)
…		…
613	for (w = signals [signum].head; w; w = w->next)	810	for (w = signals [signum].head; w; w = w->next)
614	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	811	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
615	}	812	}
616		813
617	static void	814	static void
618	sigcb (EV_P_ struct ev_io *iow, int revents)	815	sigcb (EV_P_ ev_io *iow, int revents)
619	{	816	{
620	int signum;	817	int signum;
621		818
622	#ifdef WIN32
623	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
624	#else
625	read (sigpipe [0], &revents, 1);	819	read (sigpipe [0], &revents, 1);
626	#endif
627	gotsig = 0;	820	gotsig = 0;
628		821
629	for (signum = signalmax; signum--; )	822	for (signum = signalmax; signum--; )
630	if (signals [signum].gotsig)	823	if (signals [signum].gotsig)
631	ev_feed_signal_event (EV_A_ signum + 1);	824	ev_feed_signal_event (EV_A_ signum + 1);
632	}	825	}
633		826
634	static void	827	void inline_speed
		828	fd_intern (int fd)
		829	{
		830	#ifdef _WIN32
		831	int arg = 1;
		832	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		833	#else
		834	fcntl (fd, F_SETFD, FD_CLOEXEC);
		835	fcntl (fd, F_SETFL, O_NONBLOCK);
		836	#endif
		837	}
		838
		839	static void noinline
635	siginit (EV_P)	840	siginit (EV_P)
636	{	841	{
637	#ifndef WIN32	842	fd_intern (sigpipe [0]);
638	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	843	fd_intern (sigpipe [1]);
639	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
640
641	/* rather than sort out wether we really need nb, set it */
642	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
643	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
644	#endif
645		844
646	ev_io_set (&sigev, sigpipe [0], EV_READ);	845	ev_io_set (&sigev, sigpipe [0], EV_READ);
647	ev_io_start (EV_A_ &sigev);	846	ev_io_start (EV_A_ &sigev);
648	ev_unref (EV_A); /* child watcher should not keep loop alive */	847	ev_unref (EV_A); /* child watcher should not keep loop alive */
649	}	848	}
650		849
651	/*****************************************************************************/	850	/*****************************************************************************/
652		851
653	static struct ev_child *childs [PID_HASHSIZE];	852	static WL childs [EV_PID_HASHSIZE];
654		853
655	#ifndef WIN32	854	#ifndef _WIN32
656		855
657	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	}
658		872
659	#ifndef WCONTINUED	873	#ifndef WCONTINUED
660	# define WCONTINUED 0	874	# define WCONTINUED 0
661	#endif	875	#endif
662		876
663	static void	877	static void
664	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
665	{
666	struct ev_child *w;
667
668	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
669	if (w->pid == pid || !w->pid)
670	{
671	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
672	w->rpid = pid;
673	w->rstatus = status;
674	ev_feed_event (EV_A_ (W)w, EV_CHILD);
675	}
676	}
677
678	static void
679	childcb (EV_P_ struct ev_signal *sw, int revents)	878	childcb (EV_P_ ev_signal *sw, int revents)
680	{	879	{
681	int pid, status;	880	int pid, status;
682		881
		882	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
683	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	883	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
684	{	884	if (!WCONTINUED
		885	|| errno != EINVAL
		886	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		887	return;
		888
685	/* 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 */
686	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	891	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
687		892
688	child_reap (EV_A_ sw, pid, pid, status);	893	child_reap (EV_A_ sw, pid, pid, status);
		894	if (EV_PID_HASHSIZE > 1)
689	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 */
690	}
691	}	896	}
692		897
693	#endif	898	#endif
694		899
695	/*****************************************************************************/	900	/*****************************************************************************/
696		901
		902	#if EV_USE_PORT
		903	# include "ev_port.c"
		904	#endif
697	#if EV_USE_KQUEUE	905	#if EV_USE_KQUEUE
698	# include "ev_kqueue.c"	906	# include "ev_kqueue.c"
699	#endif	907	#endif
700	#if EV_USE_EPOLL	908	#if EV_USE_EPOLL
701	# include "ev_epoll.c"	909	# include "ev_epoll.c"
…		…
718	{	926	{
719	return EV_VERSION_MINOR;	927	return EV_VERSION_MINOR;
720	}	928	}
721		929
722	/* 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 */
723	static int	931	int inline_size
724	enable_secure (void)	932	enable_secure (void)
725	{	933	{
726	#ifdef WIN32	934	#ifdef _WIN32
727	return 0;	935	return 0;
728	#else	936	#else
729	return getuid () != geteuid ()	937	return getuid () != geteuid ()
730	|| getgid () != getegid ();	938	|| getgid () != getegid ();
731	#endif	939	#endif
732	}	940	}
733		941
734	int	942	unsigned int
735	ev_method (EV_P)	943	ev_supported_backends (void)
736	{	944	{
737	return method;	945	unsigned int flags = 0;
738	}
739		946
740	static void	947	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
741	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)
742	{	958	{
743	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	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		978	return EVBACKEND_KQUEUE
		979	| EVBACKEND_PORT;
		980	}
		981
		982	unsigned int
		983	ev_backend (EV_P)
		984	{
		985	return backend;
		986	}
		987
		988	unsigned int
		989	ev_loop_count (EV_P)
		990	{
		991	return loop_count;
		992	}
		993
		994	void
		995	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		996	{
		997	io_blocktime = interval;
		998	}
		999
		1000	void
		1001	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1002	{
		1003	timeout_blocktime = interval;
		1004	}
		1005
		1006	static void noinline
		1007	loop_init (EV_P_ unsigned int flags)
		1008	{
		1009	if (!backend)
744	{	1010	{
745	#if EV_USE_MONOTONIC	1011	#if EV_USE_MONOTONIC
746	{	1012	{
747	struct timespec ts;	1013	struct timespec ts;
748	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1014	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
753	ev_rt_now = ev_time ();	1019	ev_rt_now = ev_time ();
754	mn_now = get_clock ();	1020	mn_now = get_clock ();
755	now_floor = mn_now;	1021	now_floor = mn_now;
756	rtmn_diff = ev_rt_now - mn_now;	1022	rtmn_diff = ev_rt_now - mn_now;
757		1023
758	if (methods == EVMETHOD_AUTO)	1024	io_blocktime = 0.;
759	if (!enable_secure () && getenv ("LIBEV_METHODS"))	1025	timeout_blocktime = 0.;
		1026
		1027	/* pid check not overridable via env */
		1028	#ifndef _WIN32
		1029	if (flags & EVFLAG_FORKCHECK)
		1030	curpid = getpid ();
		1031	#endif
		1032
		1033	if (!(flags & EVFLAG_NOENV)
		1034	&& !enable_secure ()
		1035	&& getenv ("LIBEV_FLAGS"))
760	methods = atoi (getenv ("LIBEV_METHODS"));	1036	flags = atoi (getenv ("LIBEV_FLAGS"));
761	else
762	methods = EVMETHOD_ANY;
763		1037
764	method = 0;	1038	if (!(flags & 0x0000ffffUL))
		1039	flags |= ev_recommended_backends ();
		1040
		1041	backend = 0;
		1042	backend_fd = -1;
765	#if EV_USE_WIN32	1043	#if EV_USE_INOTIFY
766	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	1044	fs_fd = -2;
		1045	#endif
		1046
		1047	#if EV_USE_PORT
		1048	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
767	#endif	1049	#endif
768	#if EV_USE_KQUEUE	1050	#if EV_USE_KQUEUE
769	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	1051	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
770	#endif	1052	#endif
771	#if EV_USE_EPOLL	1053	#if EV_USE_EPOLL
772	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	1054	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
773	#endif	1055	#endif
774	#if EV_USE_POLL	1056	#if EV_USE_POLL
775	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	1057	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
776	#endif	1058	#endif
777	#if EV_USE_SELECT	1059	#if EV_USE_SELECT
778	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	1060	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
779	#endif	1061	#endif
780		1062
781	ev_init (&sigev, sigcb);	1063	ev_init (&sigev, sigcb);
782	ev_set_priority (&sigev, EV_MAXPRI);	1064	ev_set_priority (&sigev, EV_MAXPRI);
783	}	1065	}
784	}	1066	}
785		1067
786	void	1068	static void noinline
787	loop_destroy (EV_P)	1069	loop_destroy (EV_P)
788	{	1070	{
789	int i;	1071	int i;
790		1072
791	#if EV_USE_WIN32	1073	#if EV_USE_INOTIFY
792	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	1074	if (fs_fd >= 0)
		1075	close (fs_fd);
		1076	#endif
		1077
		1078	if (backend_fd >= 0)
		1079	close (backend_fd);
		1080
		1081	#if EV_USE_PORT
		1082	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
793	#endif	1083	#endif
794	#if EV_USE_KQUEUE	1084	#if EV_USE_KQUEUE
795	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1085	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
796	#endif	1086	#endif
797	#if EV_USE_EPOLL	1087	#if EV_USE_EPOLL
798	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1088	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
799	#endif	1089	#endif
800	#if EV_USE_POLL	1090	#if EV_USE_POLL
801	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1091	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
802	#endif	1092	#endif
803	#if EV_USE_SELECT	1093	#if EV_USE_SELECT
804	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1094	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
805	#endif	1095	#endif
806		1096
807	for (i = NUMPRI; i--; )	1097	for (i = NUMPRI; i--; )
		1098	{
808	array_free (pending, [i]);	1099	array_free (pending, [i]);
		1100	#if EV_IDLE_ENABLE
		1101	array_free (idle, [i]);
		1102	#endif
		1103	}
		1104
		1105	ev_free (anfds); anfdmax = 0;
809		1106
810	/* have to use the microsoft-never-gets-it-right macro */	1107	/* have to use the microsoft-never-gets-it-right macro */
811	array_free_microshit (fdchange);	1108	array_free (fdchange, EMPTY);
812	array_free_microshit (timer);	1109	array_free (timer, EMPTY);
813	#if EV_PERIODICS	1110	#if EV_PERIODIC_ENABLE
814	array_free_microshit (periodic);	1111	array_free (periodic, EMPTY);
815	#endif	1112	#endif
816	array_free_microshit (idle);	1113	#if EV_FORK_ENABLE
817	array_free_microshit (prepare);	1114	array_free (fork, EMPTY);
818	array_free_microshit (check);	1115	#endif
		1116	array_free (prepare, EMPTY);
		1117	array_free (check, EMPTY);
819		1118
820	method = 0;	1119	backend = 0;
821	}	1120	}
822		1121
823	static void	1122	void inline_size infy_fork (EV_P);
		1123
		1124	void inline_size
824	loop_fork (EV_P)	1125	loop_fork (EV_P)
825	{	1126	{
		1127	#if EV_USE_PORT
		1128	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1129	#endif
		1130	#if EV_USE_KQUEUE
		1131	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1132	#endif
826	#if EV_USE_EPOLL	1133	#if EV_USE_EPOLL
827	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1134	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
828	#endif	1135	#endif
829	#if EV_USE_KQUEUE	1136	#if EV_USE_INOTIFY
830	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1137	infy_fork (EV_A);
831	#endif	1138	#endif
832		1139
833	if (ev_is_active (&sigev))	1140	if (ev_is_active (&sigev))
834	{	1141	{
835	/* default loop */	1142	/* default loop */
…		…
848	postfork = 0;	1155	postfork = 0;
849	}	1156	}
850		1157
851	#if EV_MULTIPLICITY	1158	#if EV_MULTIPLICITY
852	struct ev_loop *	1159	struct ev_loop *
853	ev_loop_new (int methods)	1160	ev_loop_new (unsigned int flags)
854	{	1161	{
855	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1162	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
856		1163
857	memset (loop, 0, sizeof (struct ev_loop));	1164	memset (loop, 0, sizeof (struct ev_loop));
858		1165
859	loop_init (EV_A_ methods);	1166	loop_init (EV_A_ flags);
860		1167
861	if (ev_method (EV_A))	1168	if (ev_backend (EV_A))
862	return loop;	1169	return loop;
863		1170
864	return 0;	1171	return 0;
865	}	1172	}
866		1173
…		…
879		1186
880	#endif	1187	#endif
881		1188
882	#if EV_MULTIPLICITY	1189	#if EV_MULTIPLICITY
883	struct ev_loop *	1190	struct ev_loop *
		1191	ev_default_loop_init (unsigned int flags)
884	#else	1192	#else
885	int	1193	int
		1194	ev_default_loop (unsigned int flags)
886	#endif	1195	#endif
887	ev_default_loop (int methods)
888	{	1196	{
889	if (sigpipe [0] == sigpipe [1])	1197	if (sigpipe [0] == sigpipe [1])
890	if (pipe (sigpipe))	1198	if (pipe (sigpipe))
891	return 0;	1199	return 0;
892		1200
893	if (!default_loop)	1201	if (!ev_default_loop_ptr)
894	{	1202	{
895	#if EV_MULTIPLICITY	1203	#if EV_MULTIPLICITY
896	struct ev_loop *loop = default_loop = &default_loop_struct;	1204	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
897	#else	1205	#else
898	default_loop = 1;	1206	ev_default_loop_ptr = 1;
899	#endif	1207	#endif
900		1208
901	loop_init (EV_A_ methods);	1209	loop_init (EV_A_ flags);
902		1210
903	if (ev_method (EV_A))	1211	if (ev_backend (EV_A))
904	{	1212	{
905	siginit (EV_A);	1213	siginit (EV_A);
906		1214
907	#ifndef WIN32	1215	#ifndef _WIN32
908	ev_signal_init (&childev, childcb, SIGCHLD);	1216	ev_signal_init (&childev, childcb, SIGCHLD);
909	ev_set_priority (&childev, EV_MAXPRI);	1217	ev_set_priority (&childev, EV_MAXPRI);
910	ev_signal_start (EV_A_ &childev);	1218	ev_signal_start (EV_A_ &childev);
911	ev_unref (EV_A); /* child watcher should not keep loop alive */	1219	ev_unref (EV_A); /* child watcher should not keep loop alive */
912	#endif	1220	#endif
913	}	1221	}
914	else	1222	else
915	default_loop = 0;	1223	ev_default_loop_ptr = 0;
916	}	1224	}
917		1225
918	return default_loop;	1226	return ev_default_loop_ptr;
919	}	1227	}
920		1228
921	void	1229	void
922	ev_default_destroy (void)	1230	ev_default_destroy (void)
923	{	1231	{
924	#if EV_MULTIPLICITY	1232	#if EV_MULTIPLICITY
925	struct ev_loop *loop = default_loop;	1233	struct ev_loop *loop = ev_default_loop_ptr;
926	#endif	1234	#endif
927		1235
928	#ifndef WIN32	1236	#ifndef _WIN32
929	ev_ref (EV_A); /* child watcher */	1237	ev_ref (EV_A); /* child watcher */
930	ev_signal_stop (EV_A_ &childev);	1238	ev_signal_stop (EV_A_ &childev);
931	#endif	1239	#endif
932		1240
933	ev_ref (EV_A); /* signal watcher */	1241	ev_ref (EV_A); /* signal watcher */
…		…
941		1249
942	void	1250	void
943	ev_default_fork (void)	1251	ev_default_fork (void)
944	{	1252	{
945	#if EV_MULTIPLICITY	1253	#if EV_MULTIPLICITY
946	struct ev_loop *loop = default_loop;	1254	struct ev_loop *loop = ev_default_loop_ptr;
947	#endif	1255	#endif
948		1256
949	if (method)	1257	if (backend)
950	postfork = 1;	1258	postfork = 1;
951	}	1259	}
952		1260
953	/*****************************************************************************/	1261	/*****************************************************************************/
954		1262
955	static int	1263	void
956	any_pending (EV_P)	1264	ev_invoke (EV_P_ void *w, int revents)
957	{	1265	{
958	int pri;	1266	EV_CB_INVOKE ((W)w, revents);
959
960	for (pri = NUMPRI; pri--; )
961	if (pendingcnt [pri])
962	return 1;
963
964	return 0;
965	}	1267	}
966		1268
967	static void	1269	void inline_speed
968	call_pending (EV_P)	1270	call_pending (EV_P)
969	{	1271	{
970	int pri;	1272	int pri;
971		1273
972	for (pri = NUMPRI; pri--; )	1274	for (pri = NUMPRI; pri--; )
973	while (pendingcnt [pri])	1275	while (pendingcnt [pri])
974	{	1276	{
975	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1277	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
976		1278
977	if (p->w)	1279	if (expect_true (p->w))
978	{	1280	{
		1281	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1282
979	p->w->pending = 0;	1283	p->w->pending = 0;
980	EV_CB_INVOKE (p->w, p->events);	1284	EV_CB_INVOKE (p->w, p->events);
981	}	1285	}
982	}	1286	}
983	}	1287	}
984		1288
985	static void	1289	void inline_size
986	timers_reify (EV_P)	1290	timers_reify (EV_P)
987	{	1291	{
988	while (timercnt && ((WT)timers [0])->at <= mn_now)	1292	while (timercnt && ((WT)timers [0])->at <= mn_now)
989	{	1293	{
990	struct ev_timer *w = timers [0];	1294	ev_timer *w = (ev_timer *)timers [0];
991		1295
992	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1296	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
993		1297
994	/* first reschedule or stop timer */	1298	/* first reschedule or stop timer */
995	if (w->repeat)	1299	if (w->repeat)
996	{	1300	{
997	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1301	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
998		1302
999	((WT)w)->at += w->repeat;	1303	((WT)w)->at += w->repeat;
1000	if (((WT)w)->at < mn_now)	1304	if (((WT)w)->at < mn_now)
1001	((WT)w)->at = mn_now;	1305	((WT)w)->at = mn_now;
1002		1306
1003	downheap ((WT *)timers, timercnt, 0);	1307	downheap (timers, timercnt, 0);
1004	}	1308	}
1005	else	1309	else
1006	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1310	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1007		1311
1008	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1312	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1009	}	1313	}
1010	}	1314	}
1011		1315
1012	#if EV_PERIODICS	1316	#if EV_PERIODIC_ENABLE
1013	static void	1317	void inline_size
1014	periodics_reify (EV_P)	1318	periodics_reify (EV_P)
1015	{	1319	{
1016	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1320	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1017	{	1321	{
1018	struct ev_periodic *w = periodics [0];	1322	ev_periodic *w = (ev_periodic *)periodics [0];
1019		1323
1020	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1324	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1021		1325
1022	/* first reschedule or stop timer */	1326	/* first reschedule or stop timer */
1023	if (w->reschedule_cb)	1327	if (w->reschedule_cb)
1024	{	1328	{
1025	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1329	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1026
1027	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1330	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1028	downheap ((WT *)periodics, periodiccnt, 0);	1331	downheap (periodics, periodiccnt, 0);
1029	}	1332	}
1030	else if (w->interval)	1333	else if (w->interval)
1031	{	1334	{
1032	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1335	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1336	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1033	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1337	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1034	downheap ((WT *)periodics, periodiccnt, 0);	1338	downheap (periodics, periodiccnt, 0);
1035	}	1339	}
1036	else	1340	else
1037	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1341	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1038		1342
1039	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1343	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1040	}	1344	}
1041	}	1345	}
1042		1346
1043	static void	1347	static void noinline
1044	periodics_reschedule (EV_P)	1348	periodics_reschedule (EV_P)
1045	{	1349	{
1046	int i;	1350	int i;
1047		1351
1048	/* adjust periodics after time jump */	1352	/* adjust periodics after time jump */
1049	for (i = 0; i < periodiccnt; ++i)	1353	for (i = 0; i < periodiccnt; ++i)
1050	{	1354	{
1051	struct ev_periodic *w = periodics [i];	1355	ev_periodic *w = (ev_periodic *)periodics [i];
1052		1356
1053	if (w->reschedule_cb)	1357	if (w->reschedule_cb)
1054	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1358	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1055	else if (w->interval)	1359	else if (w->interval)
1056	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1360	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1057	}	1361	}
1058		1362
1059	/* now rebuild the heap */	1363	/* now rebuild the heap */
1060	for (i = periodiccnt >> 1; i--; )	1364	for (i = periodiccnt >> 1; i--; )
1061	downheap ((WT *)periodics, periodiccnt, i);	1365	downheap (periodics, periodiccnt, i);
1062	}	1366	}
1063	#endif	1367	#endif
1064		1368
1065	inline int	1369	#if EV_IDLE_ENABLE
1066	time_update_monotonic (EV_P)	1370	void inline_size
		1371	idle_reify (EV_P)
1067	{	1372	{
		1373	if (expect_false (idleall))
		1374	{
		1375	int pri;
		1376
		1377	for (pri = NUMPRI; pri--; )
		1378	{
		1379	if (pendingcnt [pri])
		1380	break;
		1381
		1382	if (idlecnt [pri])
		1383	{
		1384	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1385	break;
		1386	}
		1387	}
		1388	}
		1389	}
		1390	#endif
		1391
		1392	void inline_speed
		1393	time_update (EV_P_ ev_tstamp max_block)
		1394	{
		1395	int i;
		1396
		1397	#if EV_USE_MONOTONIC
		1398	if (expect_true (have_monotonic))
		1399	{
		1400	ev_tstamp odiff = rtmn_diff;
		1401
1068	mn_now = get_clock ();	1402	mn_now = get_clock ();
1069		1403
		1404	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1405	/* interpolate in the meantime */
1070	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1406	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1071	{	1407	{
1072	ev_rt_now = rtmn_diff + mn_now;	1408	ev_rt_now = rtmn_diff + mn_now;
1073	return 0;	1409	return;
1074	}	1410	}
1075	else	1411
1076	{
1077	now_floor = mn_now;	1412	now_floor = mn_now;
1078	ev_rt_now = ev_time ();	1413	ev_rt_now = ev_time ();
1079	return 1;
1080	}
1081	}
1082		1414
1083	static void	1415	/* loop a few times, before making important decisions.
1084	time_update (EV_P)	1416	* on the choice of "4": one iteration isn't enough,
1085	{	1417	* in case we get preempted during the calls to
1086	int i;	1418	* ev_time and get_clock. a second call is almost guaranteed
1087		1419	* to succeed in that case, though. and looping a few more times
1088	#if EV_USE_MONOTONIC	1420	* doesn't hurt either as we only do this on time-jumps or
1089	if (expect_true (have_monotonic))	1421	* in the unlikely event of having been preempted here.
1090	{	1422	*/
1091	if (time_update_monotonic (EV_A))	1423	for (i = 4; --i; )
1092	{	1424	{
1093	ev_tstamp odiff = rtmn_diff;
1094
1095	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1096	{
1097	rtmn_diff = ev_rt_now - mn_now;	1425	rtmn_diff = ev_rt_now - mn_now;
1098		1426
1099	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1427	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1100	return; /* all is well */	1428	return; /* all is well */
1101		1429
1102	ev_rt_now = ev_time ();	1430	ev_rt_now = ev_time ();
1103	mn_now = get_clock ();	1431	mn_now = get_clock ();
1104	now_floor = mn_now;	1432	now_floor = mn_now;
1105	}	1433	}
1106		1434
1107	# if EV_PERIODICS	1435	# if EV_PERIODIC_ENABLE
		1436	periodics_reschedule (EV_A);
		1437	# endif
		1438	/* no timer adjustment, as the monotonic clock doesn't jump */
		1439	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1440	}
		1441	else
		1442	#endif
		1443	{
		1444	ev_rt_now = ev_time ();
		1445
		1446	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1447	{
		1448	#if EV_PERIODIC_ENABLE
1108	periodics_reschedule (EV_A);	1449	periodics_reschedule (EV_A);
1109	# endif	1450	#endif
1110	/* no timer adjustment, as the monotonic clock doesn't jump */
1111	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1112	}
1113	}
1114	else
1115	#endif
1116	{
1117	ev_rt_now = ev_time ();
1118
1119	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1120	{
1121	#if EV_PERIODICS
1122	periodics_reschedule (EV_A);
1123	#endif
1124
1125	/* adjust timers. this is easy, as the offset is the same for all */	1451	/* adjust timers. this is easy, as the offset is the same for all of them */
1126	for (i = 0; i < timercnt; ++i)	1452	for (i = 0; i < timercnt; ++i)
1127	((WT)timers [i])->at += ev_rt_now - mn_now;	1453	((WT)timers [i])->at += ev_rt_now - mn_now;
1128	}	1454	}
1129		1455
1130	mn_now = ev_rt_now;	1456	mn_now = ev_rt_now;
…		…
1146	static int loop_done;	1472	static int loop_done;
1147		1473
1148	void	1474	void
1149	ev_loop (EV_P_ int flags)	1475	ev_loop (EV_P_ int flags)
1150	{	1476	{
1151	double block;
1152	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1477	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1478	? EVUNLOOP_ONE
		1479	: EVUNLOOP_CANCEL;
		1480
		1481	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1153		1482
1154	do	1483	do
1155	{	1484	{
		1485	#ifndef _WIN32
		1486	if (expect_false (curpid)) /* penalise the forking check even more */
		1487	if (expect_false (getpid () != curpid))
		1488	{
		1489	curpid = getpid ();
		1490	postfork = 1;
		1491	}
		1492	#endif
		1493
		1494	#if EV_FORK_ENABLE
		1495	/* we might have forked, so queue fork handlers */
		1496	if (expect_false (postfork))
		1497	if (forkcnt)
		1498	{
		1499	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1500	call_pending (EV_A);
		1501	}
		1502	#endif
		1503
1156	/* queue check watchers (and execute them) */	1504	/* queue prepare watchers (and execute them) */
1157	if (expect_false (preparecnt))	1505	if (expect_false (preparecnt))
1158	{	1506	{
1159	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1507	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1160	call_pending (EV_A);	1508	call_pending (EV_A);
1161	}	1509	}
1162		1510
		1511	if (expect_false (!activecnt))
		1512	break;
		1513
1163	/* we might have forked, so reify kernel state if necessary */	1514	/* we might have forked, so reify kernel state if necessary */
1164	if (expect_false (postfork))	1515	if (expect_false (postfork))
1165	loop_fork (EV_A);	1516	loop_fork (EV_A);
1166		1517
1167	/* update fd-related kernel structures */	1518	/* update fd-related kernel structures */
1168	fd_reify (EV_A);	1519	fd_reify (EV_A);
1169		1520
1170	/* calculate blocking time */	1521	/* calculate blocking time */
		1522	{
		1523	ev_tstamp waittime = 0.;
		1524	ev_tstamp sleeptime = 0.;
1171		1525
1172	/* we only need this for !monotonic clock or timers, but as we basically	1526	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1173	always have timers, we just calculate it always */
1174	#if EV_USE_MONOTONIC
1175	if (expect_true (have_monotonic))
1176	time_update_monotonic (EV_A);
1177	else
1178	#endif
1179	{	1527	{
1180	ev_rt_now = ev_time ();	1528	/* update time to cancel out callback processing overhead */
1181	mn_now = ev_rt_now;	1529	time_update (EV_A_ 1e100);
1182	}
1183		1530
1184	if (flags & EVLOOP_NONBLOCK || idlecnt)
1185	block = 0.;
1186	else
1187	{
1188	block = MAX_BLOCKTIME;	1531	waittime = MAX_BLOCKTIME;
1189		1532
1190	if (timercnt)	1533	if (timercnt)
1191	{	1534	{
1192	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1535	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1193	if (block > to) block = to;	1536	if (waittime > to) waittime = to;
1194	}	1537	}
1195		1538
1196	#if EV_PERIODICS	1539	#if EV_PERIODIC_ENABLE
1197	if (periodiccnt)	1540	if (periodiccnt)
1198	{	1541	{
1199	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1542	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1200	if (block > to) block = to;	1543	if (waittime > to) waittime = to;
1201	}	1544	}
1202	#endif	1545	#endif
1203		1546
1204	if (block < 0.) block = 0.;	1547	if (expect_false (waittime < timeout_blocktime))
		1548	waittime = timeout_blocktime;
		1549
		1550	sleeptime = waittime - backend_fudge;
		1551
		1552	if (expect_true (sleeptime > io_blocktime))
		1553	sleeptime = io_blocktime;
		1554
		1555	if (sleeptime)
		1556	{
		1557	ev_sleep (sleeptime);
		1558	waittime -= sleeptime;
		1559	}
1205	}	1560	}
1206		1561
1207	method_poll (EV_A_ block);	1562	++loop_count;
		1563	backend_poll (EV_A_ waittime);
1208		1564
1209	/* update ev_rt_now, do magic */	1565	/* update ev_rt_now, do magic */
1210	time_update (EV_A);	1566	time_update (EV_A_ waittime + sleeptime);
		1567	}
1211		1568
1212	/* queue pending timers and reschedule them */	1569	/* queue pending timers and reschedule them */
1213	timers_reify (EV_A); /* relative timers called last */	1570	timers_reify (EV_A); /* relative timers called last */
1214	#if EV_PERIODICS	1571	#if EV_PERIODIC_ENABLE
1215	periodics_reify (EV_A); /* absolute timers called first */	1572	periodics_reify (EV_A); /* absolute timers called first */
1216	#endif	1573	#endif
1217		1574
		1575	#if EV_IDLE_ENABLE
1218	/* queue idle watchers unless io or timers are pending */	1576	/* queue idle watchers unless other events are pending */
1219	if (idlecnt && !any_pending (EV_A))	1577	idle_reify (EV_A);
1220	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1578	#endif
1221		1579
1222	/* queue check watchers, to be executed first */	1580	/* queue check watchers, to be executed first */
1223	if (checkcnt)	1581	if (expect_false (checkcnt))
1224	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1582	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1225		1583
1226	call_pending (EV_A);	1584	call_pending (EV_A);
		1585
1227	}	1586	}
1228	while (activecnt && !loop_done);	1587	while (expect_true (activecnt && !loop_done));
1229		1588
1230	if (loop_done != 2)	1589	if (loop_done == EVUNLOOP_ONE)
1231	loop_done = 0;	1590	loop_done = EVUNLOOP_CANCEL;
1232	}	1591	}
1233		1592
1234	void	1593	void
1235	ev_unloop (EV_P_ int how)	1594	ev_unloop (EV_P_ int how)
1236	{	1595	{
1237	loop_done = how;	1596	loop_done = how;
1238	}	1597	}
1239		1598
1240	/*****************************************************************************/	1599	/*****************************************************************************/
1241		1600
1242	inline void	1601	void inline_size
1243	wlist_add (WL *head, WL elem)	1602	wlist_add (WL *head, WL elem)
1244	{	1603	{
1245	elem->next = *head;	1604	elem->next = *head;
1246	*head = elem;	1605	*head = elem;
1247	}	1606	}
1248		1607
1249	inline void	1608	void inline_size
1250	wlist_del (WL *head, WL elem)	1609	wlist_del (WL *head, WL elem)
1251	{	1610	{
1252	while (*head)	1611	while (*head)
1253	{	1612	{
1254	if (*head == elem)	1613	if (*head == elem)
…		…
1259		1618
1260	head = &(*head)->next;	1619	head = &(*head)->next;
1261	}	1620	}
1262	}	1621	}
1263		1622
1264	inline void	1623	void inline_speed
1265	ev_clear_pending (EV_P_ W w)	1624	clear_pending (EV_P_ W w)
1266	{	1625	{
1267	if (w->pending)	1626	if (w->pending)
1268	{	1627	{
1269	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1628	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1270	w->pending = 0;	1629	w->pending = 0;
1271	}	1630	}
1272	}	1631	}
1273		1632
1274	inline void	1633	int
		1634	ev_clear_pending (EV_P_ void *w)
		1635	{
		1636	W w_ = (W)w;
		1637	int pending = w_->pending;
		1638
		1639	if (expect_true (pending))
		1640	{
		1641	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1642	w_->pending = 0;
		1643	p->w = 0;
		1644	return p->events;
		1645	}
		1646	else
		1647	return 0;
		1648	}
		1649
		1650	void inline_size
		1651	pri_adjust (EV_P_ W w)
		1652	{
		1653	int pri = w->priority;
		1654	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1655	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1656	w->priority = pri;
		1657	}
		1658
		1659	void inline_speed
1275	ev_start (EV_P_ W w, int active)	1660	ev_start (EV_P_ W w, int active)
1276	{	1661	{
1277	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1662	pri_adjust (EV_A_ w);
1278	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1279
1280	w->active = active;	1663	w->active = active;
1281	ev_ref (EV_A);	1664	ev_ref (EV_A);
1282	}	1665	}
1283		1666
1284	inline void	1667	void inline_size
1285	ev_stop (EV_P_ W w)	1668	ev_stop (EV_P_ W w)
1286	{	1669	{
1287	ev_unref (EV_A);	1670	ev_unref (EV_A);
1288	w->active = 0;	1671	w->active = 0;
1289	}	1672	}
1290		1673
1291	/*****************************************************************************/	1674	/*****************************************************************************/
1292		1675
1293	void	1676	void noinline
1294	ev_io_start (EV_P_ struct ev_io *w)	1677	ev_io_start (EV_P_ ev_io *w)
1295	{	1678	{
1296	int fd = w->fd;	1679	int fd = w->fd;
1297		1680
1298	if (ev_is_active (w))	1681	if (expect_false (ev_is_active (w)))
1299	return;	1682	return;
1300		1683
1301	assert (("ev_io_start called with negative fd", fd >= 0));	1684	assert (("ev_io_start called with negative fd", fd >= 0));
1302		1685
1303	ev_start (EV_A_ (W)w, 1);	1686	ev_start (EV_A_ (W)w, 1);
1304	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1687	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1305	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1688	wlist_add (&anfds[fd].head, (WL)w);
1306		1689
1307	fd_change (EV_A_ fd);	1690	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1691	w->events &= ~EV_IOFDSET;
1308	}	1692	}
1309		1693
1310	void	1694	void noinline
1311	ev_io_stop (EV_P_ struct ev_io *w)	1695	ev_io_stop (EV_P_ ev_io *w)
1312	{	1696	{
1313	ev_clear_pending (EV_A_ (W)w);	1697	clear_pending (EV_A_ (W)w);
1314	if (!ev_is_active (w))	1698	if (expect_false (!ev_is_active (w)))
1315	return;	1699	return;
1316		1700
1317	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1701	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1318		1702
1319	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1703	wlist_del (&anfds[w->fd].head, (WL)w);
1320	ev_stop (EV_A_ (W)w);	1704	ev_stop (EV_A_ (W)w);
1321		1705
1322	fd_change (EV_A_ w->fd);	1706	fd_change (EV_A_ w->fd, 1);
1323	}	1707	}
1324		1708
1325	void	1709	void noinline
1326	ev_timer_start (EV_P_ struct ev_timer *w)	1710	ev_timer_start (EV_P_ ev_timer *w)
		1711	{
		1712	if (expect_false (ev_is_active (w)))
		1713	return;
		1714
		1715	((WT)w)->at += mn_now;
		1716
		1717	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
		1718
		1719	ev_start (EV_A_ (W)w, ++timercnt);
		1720	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
		1721	timers [timercnt - 1] = (WT)w;
		1722	upheap (timers, timercnt - 1);
		1723
		1724	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1725	}
		1726
		1727	void noinline
		1728	ev_timer_stop (EV_P_ ev_timer *w)
		1729	{
		1730	clear_pending (EV_A_ (W)w);
		1731	if (expect_false (!ev_is_active (w)))
		1732	return;
		1733
		1734	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
		1735
		1736	{
		1737	int active = ((W)w)->active;
		1738
		1739	if (expect_true (--active < --timercnt))
		1740	{
		1741	timers [active] = timers [timercnt];
		1742	adjustheap (timers, timercnt, active);
		1743	}
		1744	}
		1745
		1746	((WT)w)->at -= mn_now;
		1747
		1748	ev_stop (EV_A_ (W)w);
		1749	}
		1750
		1751	void noinline
		1752	ev_timer_again (EV_P_ ev_timer *w)
1327	{	1753	{
1328	if (ev_is_active (w))	1754	if (ev_is_active (w))
1329	return;
1330
1331	((WT)w)->at += mn_now;
1332
1333	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1334
1335	ev_start (EV_A_ (W)w, ++timercnt);
1336	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1337	timers [timercnt - 1] = w;
1338	upheap ((WT *)timers, timercnt - 1);
1339
1340	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1341	}
1342
1343	void
1344	ev_timer_stop (EV_P_ struct ev_timer *w)
1345	{
1346	ev_clear_pending (EV_A_ (W)w);
1347	if (!ev_is_active (w))
1348	return;
1349
1350	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1351
1352	if (((W)w)->active < timercnt--)
1353	{
1354	timers [((W)w)->active - 1] = timers [timercnt];
1355	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1356	}
1357
1358	((WT)w)->at -= mn_now;
1359
1360	ev_stop (EV_A_ (W)w);
1361	}
1362
1363	void
1364	ev_timer_again (EV_P_ struct ev_timer *w)
1365	{
1366	if (ev_is_active (w))
1367	{	1755	{
1368	if (w->repeat)	1756	if (w->repeat)
		1757	{
		1758	((WT)w)->at = mn_now + w->repeat;
1369	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1759	adjustheap (timers, timercnt, ((W)w)->active - 1);
		1760	}
1370	else	1761	else
1371	ev_timer_stop (EV_A_ w);	1762	ev_timer_stop (EV_A_ w);
1372	}	1763	}
1373	else if (w->repeat)	1764	else if (w->repeat)
		1765	{
		1766	w->at = w->repeat;
1374	ev_timer_start (EV_A_ w);	1767	ev_timer_start (EV_A_ w);
		1768	}
1375	}	1769	}
1376		1770
1377	#if EV_PERIODICS	1771	#if EV_PERIODIC_ENABLE
1378	void	1772	void noinline
1379	ev_periodic_start (EV_P_ struct ev_periodic *w)	1773	ev_periodic_start (EV_P_ ev_periodic *w)
1380	{	1774	{
1381	if (ev_is_active (w))	1775	if (expect_false (ev_is_active (w)))
1382	return;	1776	return;
1383		1777
1384	if (w->reschedule_cb)	1778	if (w->reschedule_cb)
1385	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1779	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1386	else if (w->interval)	1780	else if (w->interval)
1387	{	1781	{
1388	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1782	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1389	/* this formula differs from the one in periodic_reify because we do not always round up */	1783	/* this formula differs from the one in periodic_reify because we do not always round up */
1390	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1784	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1391	}	1785	}
		1786	else
		1787	((WT)w)->at = w->offset;
1392		1788
1393	ev_start (EV_A_ (W)w, ++periodiccnt);	1789	ev_start (EV_A_ (W)w, ++periodiccnt);
1394	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1790	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1395	periodics [periodiccnt - 1] = w;	1791	periodics [periodiccnt - 1] = (WT)w;
1396	upheap ((WT *)periodics, periodiccnt - 1);	1792	upheap (periodics, periodiccnt - 1);
1397		1793
1398	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1794	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1399	}	1795	}
1400		1796
1401	void	1797	void noinline
1402	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1798	ev_periodic_stop (EV_P_ ev_periodic *w)
1403	{	1799	{
1404	ev_clear_pending (EV_A_ (W)w);	1800	clear_pending (EV_A_ (W)w);
1405	if (!ev_is_active (w))	1801	if (expect_false (!ev_is_active (w)))
1406	return;	1802	return;
1407		1803
1408	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1804	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1409		1805
1410	if (((W)w)->active < periodiccnt--)	1806	{
		1807	int active = ((W)w)->active;
		1808
		1809	if (expect_true (--active < --periodiccnt))
1411	{	1810	{
1412	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1811	periodics [active] = periodics [periodiccnt];
1413	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1812	adjustheap (periodics, periodiccnt, active);
1414	}	1813	}
		1814	}
1415		1815
1416	ev_stop (EV_A_ (W)w);	1816	ev_stop (EV_A_ (W)w);
1417	}	1817	}
1418		1818
1419	void	1819	void noinline
1420	ev_periodic_again (EV_P_ struct ev_periodic *w)	1820	ev_periodic_again (EV_P_ ev_periodic *w)
1421	{	1821	{
1422	/* TODO: use adjustheap and recalculation */	1822	/* TODO: use adjustheap and recalculation */
1423	ev_periodic_stop (EV_A_ w);	1823	ev_periodic_stop (EV_A_ w);
1424	ev_periodic_start (EV_A_ w);	1824	ev_periodic_start (EV_A_ w);
1425	}	1825	}
1426	#endif	1826	#endif
1427		1827
1428	void
1429	ev_idle_start (EV_P_ struct ev_idle *w)
1430	{
1431	if (ev_is_active (w))
1432	return;
1433
1434	ev_start (EV_A_ (W)w, ++idlecnt);
1435	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1436	idles [idlecnt - 1] = w;
1437	}
1438
1439	void
1440	ev_idle_stop (EV_P_ struct ev_idle *w)
1441	{
1442	ev_clear_pending (EV_A_ (W)w);
1443	if (ev_is_active (w))
1444	return;
1445
1446	idles [((W)w)->active - 1] = idles [--idlecnt];
1447	ev_stop (EV_A_ (W)w);
1448	}
1449
1450	void
1451	ev_prepare_start (EV_P_ struct ev_prepare *w)
1452	{
1453	if (ev_is_active (w))
1454	return;
1455
1456	ev_start (EV_A_ (W)w, ++preparecnt);
1457	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1458	prepares [preparecnt - 1] = w;
1459	}
1460
1461	void
1462	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1463	{
1464	ev_clear_pending (EV_A_ (W)w);
1465	if (ev_is_active (w))
1466	return;
1467
1468	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1469	ev_stop (EV_A_ (W)w);
1470	}
1471
1472	void
1473	ev_check_start (EV_P_ struct ev_check *w)
1474	{
1475	if (ev_is_active (w))
1476	return;
1477
1478	ev_start (EV_A_ (W)w, ++checkcnt);
1479	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1480	checks [checkcnt - 1] = w;
1481	}
1482
1483	void
1484	ev_check_stop (EV_P_ struct ev_check *w)
1485	{
1486	ev_clear_pending (EV_A_ (W)w);
1487	if (!ev_is_active (w))
1488	return;
1489
1490	checks [((W)w)->active - 1] = checks [--checkcnt];
1491	ev_stop (EV_A_ (W)w);
1492	}
1493
1494	#ifndef SA_RESTART	1828	#ifndef SA_RESTART
1495	# define SA_RESTART 0	1829	# define SA_RESTART 0
1496	#endif	1830	#endif
1497		1831
1498	void	1832	void noinline
1499	ev_signal_start (EV_P_ struct ev_signal *w)	1833	ev_signal_start (EV_P_ ev_signal *w)
1500	{	1834	{
1501	#if EV_MULTIPLICITY	1835	#if EV_MULTIPLICITY
1502	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1836	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1503	#endif	1837	#endif
1504	if (ev_is_active (w))	1838	if (expect_false (ev_is_active (w)))
1505	return;	1839	return;
1506		1840
1507	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1841	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1508		1842
		1843	{
		1844	#ifndef _WIN32
		1845	sigset_t full, prev;
		1846	sigfillset (&full);
		1847	sigprocmask (SIG_SETMASK, &full, &prev);
		1848	#endif
		1849
		1850	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1851
		1852	#ifndef _WIN32
		1853	sigprocmask (SIG_SETMASK, &prev, 0);
		1854	#endif
		1855	}
		1856
1509	ev_start (EV_A_ (W)w, 1);	1857	ev_start (EV_A_ (W)w, 1);
1510	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1511	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1858	wlist_add (&signals [w->signum - 1].head, (WL)w);
1512		1859
1513	if (!((WL)w)->next)	1860	if (!((WL)w)->next)
1514	{	1861	{
1515	#if WIN32	1862	#if _WIN32
1516	signal (w->signum, sighandler);	1863	signal (w->signum, sighandler);
1517	#else	1864	#else
1518	struct sigaction sa;	1865	struct sigaction sa;
1519	sa.sa_handler = sighandler;	1866	sa.sa_handler = sighandler;
1520	sigfillset (&sa.sa_mask);	1867	sigfillset (&sa.sa_mask);
…		…
1522	sigaction (w->signum, &sa, 0);	1869	sigaction (w->signum, &sa, 0);
1523	#endif	1870	#endif
1524	}	1871	}
1525	}	1872	}
1526		1873
1527	void	1874	void noinline
1528	ev_signal_stop (EV_P_ struct ev_signal *w)	1875	ev_signal_stop (EV_P_ ev_signal *w)
1529	{	1876	{
1530	ev_clear_pending (EV_A_ (W)w);	1877	clear_pending (EV_A_ (W)w);
1531	if (!ev_is_active (w))	1878	if (expect_false (!ev_is_active (w)))
1532	return;	1879	return;
1533		1880
1534	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1881	wlist_del (&signals [w->signum - 1].head, (WL)w);
1535	ev_stop (EV_A_ (W)w);	1882	ev_stop (EV_A_ (W)w);
1536		1883
1537	if (!signals [w->signum - 1].head)	1884	if (!signals [w->signum - 1].head)
1538	signal (w->signum, SIG_DFL);	1885	signal (w->signum, SIG_DFL);
1539	}	1886	}
1540		1887
1541	void	1888	void
1542	ev_child_start (EV_P_ struct ev_child *w)	1889	ev_child_start (EV_P_ ev_child *w)
1543	{	1890	{
1544	#if EV_MULTIPLICITY	1891	#if EV_MULTIPLICITY
1545	assert (("child watchers are only supported in the default loop", loop == default_loop));	1892	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1546	#endif	1893	#endif
1547	if (ev_is_active (w))	1894	if (expect_false (ev_is_active (w)))
1548	return;	1895	return;
1549		1896
1550	ev_start (EV_A_ (W)w, 1);	1897	ev_start (EV_A_ (W)w, 1);
1551	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1898	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1552	}	1899	}
1553		1900
1554	void	1901	void
1555	ev_child_stop (EV_P_ struct ev_child *w)	1902	ev_child_stop (EV_P_ ev_child *w)
1556	{	1903	{
1557	ev_clear_pending (EV_A_ (W)w);	1904	clear_pending (EV_A_ (W)w);
1558	if (!ev_is_active (w))	1905	if (expect_false (!ev_is_active (w)))
1559	return;	1906	return;
1560		1907
1561	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1908	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1562	ev_stop (EV_A_ (W)w);	1909	ev_stop (EV_A_ (W)w);
1563	}	1910	}
1564		1911
		1912	#if EV_STAT_ENABLE
		1913
		1914	# ifdef _WIN32
		1915	# undef lstat
		1916	# define lstat(a,b) _stati64 (a,b)
		1917	# endif
		1918
		1919	#define DEF_STAT_INTERVAL 5.0074891
		1920	#define MIN_STAT_INTERVAL 0.1074891
		1921
		1922	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1923
		1924	#if EV_USE_INOTIFY
		1925	# define EV_INOTIFY_BUFSIZE 8192
		1926
		1927	static void noinline
		1928	infy_add (EV_P_ ev_stat *w)
		1929	{
		1930	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);
		1931
		1932	if (w->wd < 0)
		1933	{
		1934	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1935
		1936	/* monitor some parent directory for speedup hints */
		1937	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1938	{
		1939	char path [4096];
		1940	strcpy (path, w->path);
		1941
		1942	do
		1943	{
		1944	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1945	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1946
		1947	char *pend = strrchr (path, '/');
		1948
		1949	if (!pend)
		1950	break; /* whoops, no '/', complain to your admin */
		1951
		1952	*pend = 0;
		1953	w->wd = inotify_add_watch (fs_fd, path, mask);
		1954	}
		1955	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1956	}
		1957	}
		1958	else
		1959	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1960
		1961	if (w->wd >= 0)
		1962	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1963	}
		1964
		1965	static void noinline
		1966	infy_del (EV_P_ ev_stat *w)
		1967	{
		1968	int slot;
		1969	int wd = w->wd;
		1970
		1971	if (wd < 0)
		1972	return;
		1973
		1974	w->wd = -2;
		1975	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1976	wlist_del (&fs_hash [slot].head, (WL)w);
		1977
		1978	/* remove this watcher, if others are watching it, they will rearm */
		1979	inotify_rm_watch (fs_fd, wd);
		1980	}
		1981
		1982	static void noinline
		1983	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1984	{
		1985	if (slot < 0)
		1986	/* overflow, need to check for all hahs slots */
		1987	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1988	infy_wd (EV_A_ slot, wd, ev);
		1989	else
		1990	{
		1991	WL w_;
		1992
		1993	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1994	{
		1995	ev_stat *w = (ev_stat *)w_;
		1996	w_ = w_->next; /* lets us remove this watcher and all before it */
		1997
		1998	if (w->wd == wd || wd == -1)
		1999	{
		2000	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		2001	{
		2002	w->wd = -1;
		2003	infy_add (EV_A_ w); /* re-add, no matter what */
		2004	}
		2005
		2006	stat_timer_cb (EV_A_ &w->timer, 0);
		2007	}
		2008	}
		2009	}
		2010	}
		2011
		2012	static void
		2013	infy_cb (EV_P_ ev_io *w, int revents)
		2014	{
		2015	char buf [EV_INOTIFY_BUFSIZE];
		2016	struct inotify_event *ev = (struct inotify_event *)buf;
		2017	int ofs;
		2018	int len = read (fs_fd, buf, sizeof (buf));
		2019
		2020	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2021	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2022	}
		2023
		2024	void inline_size
		2025	infy_init (EV_P)
		2026	{
		2027	if (fs_fd != -2)
		2028	return;
		2029
		2030	fs_fd = inotify_init ();
		2031
		2032	if (fs_fd >= 0)
		2033	{
		2034	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2035	ev_set_priority (&fs_w, EV_MAXPRI);
		2036	ev_io_start (EV_A_ &fs_w);
		2037	}
		2038	}
		2039
		2040	void inline_size
		2041	infy_fork (EV_P)
		2042	{
		2043	int slot;
		2044
		2045	if (fs_fd < 0)
		2046	return;
		2047
		2048	close (fs_fd);
		2049	fs_fd = inotify_init ();
		2050
		2051	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2052	{
		2053	WL w_ = fs_hash [slot].head;
		2054	fs_hash [slot].head = 0;
		2055
		2056	while (w_)
		2057	{
		2058	ev_stat *w = (ev_stat *)w_;
		2059	w_ = w_->next; /* lets us add this watcher */
		2060
		2061	w->wd = -1;
		2062
		2063	if (fs_fd >= 0)
		2064	infy_add (EV_A_ w); /* re-add, no matter what */
		2065	else
		2066	ev_timer_start (EV_A_ &w->timer);
		2067	}
		2068
		2069	}
		2070	}
		2071
		2072	#endif
		2073
		2074	void
		2075	ev_stat_stat (EV_P_ ev_stat *w)
		2076	{
		2077	if (lstat (w->path, &w->attr) < 0)
		2078	w->attr.st_nlink = 0;
		2079	else if (!w->attr.st_nlink)
		2080	w->attr.st_nlink = 1;
		2081	}
		2082
		2083	static void noinline
		2084	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2085	{
		2086	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2087
		2088	/* we copy this here each the time so that */
		2089	/* prev has the old value when the callback gets invoked */
		2090	w->prev = w->attr;
		2091	ev_stat_stat (EV_A_ w);
		2092
		2093	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2094	if (
		2095	w->prev.st_dev != w->attr.st_dev
		2096	|| w->prev.st_ino != w->attr.st_ino
		2097	|| w->prev.st_mode != w->attr.st_mode
		2098	|| w->prev.st_nlink != w->attr.st_nlink
		2099	|| w->prev.st_uid != w->attr.st_uid
		2100	|| w->prev.st_gid != w->attr.st_gid
		2101	|| w->prev.st_rdev != w->attr.st_rdev
		2102	|| w->prev.st_size != w->attr.st_size
		2103	|| w->prev.st_atime != w->attr.st_atime
		2104	|| w->prev.st_mtime != w->attr.st_mtime
		2105	|| w->prev.st_ctime != w->attr.st_ctime
		2106	) {
		2107	#if EV_USE_INOTIFY
		2108	infy_del (EV_A_ w);
		2109	infy_add (EV_A_ w);
		2110	ev_stat_stat (EV_A_ w); /* avoid race... */
		2111	#endif
		2112
		2113	ev_feed_event (EV_A_ w, EV_STAT);
		2114	}
		2115	}
		2116
		2117	void
		2118	ev_stat_start (EV_P_ ev_stat *w)
		2119	{
		2120	if (expect_false (ev_is_active (w)))
		2121	return;
		2122
		2123	/* since we use memcmp, we need to clear any padding data etc. */
		2124	memset (&w->prev, 0, sizeof (ev_statdata));
		2125	memset (&w->attr, 0, sizeof (ev_statdata));
		2126
		2127	ev_stat_stat (EV_A_ w);
		2128
		2129	if (w->interval < MIN_STAT_INTERVAL)
		2130	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2131
		2132	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2133	ev_set_priority (&w->timer, ev_priority (w));
		2134
		2135	#if EV_USE_INOTIFY
		2136	infy_init (EV_A);
		2137
		2138	if (fs_fd >= 0)
		2139	infy_add (EV_A_ w);
		2140	else
		2141	#endif
		2142	ev_timer_start (EV_A_ &w->timer);
		2143
		2144	ev_start (EV_A_ (W)w, 1);
		2145	}
		2146
		2147	void
		2148	ev_stat_stop (EV_P_ ev_stat *w)
		2149	{
		2150	clear_pending (EV_A_ (W)w);
		2151	if (expect_false (!ev_is_active (w)))
		2152	return;
		2153
		2154	#if EV_USE_INOTIFY
		2155	infy_del (EV_A_ w);
		2156	#endif
		2157	ev_timer_stop (EV_A_ &w->timer);
		2158
		2159	ev_stop (EV_A_ (W)w);
		2160	}
		2161	#endif
		2162
		2163	#if EV_IDLE_ENABLE
		2164	void
		2165	ev_idle_start (EV_P_ ev_idle *w)
		2166	{
		2167	if (expect_false (ev_is_active (w)))
		2168	return;
		2169
		2170	pri_adjust (EV_A_ (W)w);
		2171
		2172	{
		2173	int active = ++idlecnt [ABSPRI (w)];
		2174
		2175	++idleall;
		2176	ev_start (EV_A_ (W)w, active);
		2177
		2178	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2179	idles [ABSPRI (w)][active - 1] = w;
		2180	}
		2181	}
		2182
		2183	void
		2184	ev_idle_stop (EV_P_ ev_idle *w)
		2185	{
		2186	clear_pending (EV_A_ (W)w);
		2187	if (expect_false (!ev_is_active (w)))
		2188	return;
		2189
		2190	{
		2191	int active = ((W)w)->active;
		2192
		2193	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2194	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2195
		2196	ev_stop (EV_A_ (W)w);
		2197	--idleall;
		2198	}
		2199	}
		2200	#endif
		2201
		2202	void
		2203	ev_prepare_start (EV_P_ ev_prepare *w)
		2204	{
		2205	if (expect_false (ev_is_active (w)))
		2206	return;
		2207
		2208	ev_start (EV_A_ (W)w, ++preparecnt);
		2209	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2210	prepares [preparecnt - 1] = w;
		2211	}
		2212
		2213	void
		2214	ev_prepare_stop (EV_P_ ev_prepare *w)
		2215	{
		2216	clear_pending (EV_A_ (W)w);
		2217	if (expect_false (!ev_is_active (w)))
		2218	return;
		2219
		2220	{
		2221	int active = ((W)w)->active;
		2222	prepares [active - 1] = prepares [--preparecnt];
		2223	((W)prepares [active - 1])->active = active;
		2224	}
		2225
		2226	ev_stop (EV_A_ (W)w);
		2227	}
		2228
		2229	void
		2230	ev_check_start (EV_P_ ev_check *w)
		2231	{
		2232	if (expect_false (ev_is_active (w)))
		2233	return;
		2234
		2235	ev_start (EV_A_ (W)w, ++checkcnt);
		2236	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2237	checks [checkcnt - 1] = w;
		2238	}
		2239
		2240	void
		2241	ev_check_stop (EV_P_ ev_check *w)
		2242	{
		2243	clear_pending (EV_A_ (W)w);
		2244	if (expect_false (!ev_is_active (w)))
		2245	return;
		2246
		2247	{
		2248	int active = ((W)w)->active;
		2249	checks [active - 1] = checks [--checkcnt];
		2250	((W)checks [active - 1])->active = active;
		2251	}
		2252
		2253	ev_stop (EV_A_ (W)w);
		2254	}
		2255
		2256	#if EV_EMBED_ENABLE
		2257	void noinline
		2258	ev_embed_sweep (EV_P_ ev_embed *w)
		2259	{
		2260	ev_loop (w->other, EVLOOP_NONBLOCK);
		2261	}
		2262
		2263	static void
		2264	embed_io_cb (EV_P_ ev_io *io, int revents)
		2265	{
		2266	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2267
		2268	if (ev_cb (w))
		2269	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2270	else
		2271	ev_embed_sweep (loop, w);
		2272	}
		2273
		2274	static void
		2275	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2276	{
		2277	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2278
		2279	fd_reify (w->other);
		2280	}
		2281
		2282	void
		2283	ev_embed_start (EV_P_ ev_embed *w)
		2284	{
		2285	if (expect_false (ev_is_active (w)))
		2286	return;
		2287
		2288	{
		2289	struct ev_loop *loop = w->other;
		2290	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2291	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
		2292	}
		2293
		2294	ev_set_priority (&w->io, ev_priority (w));
		2295	ev_io_start (EV_A_ &w->io);
		2296
		2297	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2298	ev_set_priority (&w->prepare, EV_MINPRI);
		2299	ev_prepare_start (EV_A_ &w->prepare);
		2300
		2301	ev_start (EV_A_ (W)w, 1);
		2302	}
		2303
		2304	void
		2305	ev_embed_stop (EV_P_ ev_embed *w)
		2306	{
		2307	clear_pending (EV_A_ (W)w);
		2308	if (expect_false (!ev_is_active (w)))
		2309	return;
		2310
		2311	ev_io_stop (EV_A_ &w->io);
		2312	ev_prepare_stop (EV_A_ &w->prepare);
		2313
		2314	ev_stop (EV_A_ (W)w);
		2315	}
		2316	#endif
		2317
		2318	#if EV_FORK_ENABLE
		2319	void
		2320	ev_fork_start (EV_P_ ev_fork *w)
		2321	{
		2322	if (expect_false (ev_is_active (w)))
		2323	return;
		2324
		2325	ev_start (EV_A_ (W)w, ++forkcnt);
		2326	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2327	forks [forkcnt - 1] = w;
		2328	}
		2329
		2330	void
		2331	ev_fork_stop (EV_P_ ev_fork *w)
		2332	{
		2333	clear_pending (EV_A_ (W)w);
		2334	if (expect_false (!ev_is_active (w)))
		2335	return;
		2336
		2337	{
		2338	int active = ((W)w)->active;
		2339	forks [active - 1] = forks [--forkcnt];
		2340	((W)forks [active - 1])->active = active;
		2341	}
		2342
		2343	ev_stop (EV_A_ (W)w);
		2344	}
		2345	#endif
		2346
1565	/*****************************************************************************/	2347	/*****************************************************************************/
1566		2348
1567	struct ev_once	2349	struct ev_once
1568	{	2350	{
1569	struct ev_io io;	2351	ev_io io;
1570	struct ev_timer to;	2352	ev_timer to;
1571	void (*cb)(int revents, void *arg);	2353	void (*cb)(int revents, void *arg);
1572	void *arg;	2354	void *arg;
1573	};	2355	};
1574		2356
1575	static void	2357	static void
…		…
1584		2366
1585	cb (revents, arg);	2367	cb (revents, arg);
1586	}	2368	}
1587		2369
1588	static void	2370	static void
1589	once_cb_io (EV_P_ struct ev_io *w, int revents)	2371	once_cb_io (EV_P_ ev_io *w, int revents)
1590	{	2372	{
1591	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2373	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1592	}	2374	}
1593		2375
1594	static void	2376	static void
1595	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2377	once_cb_to (EV_P_ ev_timer *w, int revents)
1596	{	2378	{
1597	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2379	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1598	}	2380	}
1599		2381
1600	void	2382	void
1601	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2383	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1602	{	2384	{
1603	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	2385	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1604		2386
1605	if (!once)	2387	if (expect_false (!once))
		2388	{
1606	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2389	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1607	else	2390	return;
1608	{	2391	}
		2392
1609	once->cb = cb;	2393	once->cb = cb;
1610	once->arg = arg;	2394	once->arg = arg;
1611		2395
1612	ev_init (&once->io, once_cb_io);	2396	ev_init (&once->io, once_cb_io);
1613	if (fd >= 0)	2397	if (fd >= 0)
1614	{	2398	{
1615	ev_io_set (&once->io, fd, events);	2399	ev_io_set (&once->io, fd, events);
1616	ev_io_start (EV_A_ &once->io);	2400	ev_io_start (EV_A_ &once->io);
1617	}	2401	}
1618		2402
1619	ev_init (&once->to, once_cb_to);	2403	ev_init (&once->to, once_cb_to);
1620	if (timeout >= 0.)	2404	if (timeout >= 0.)
1621	{	2405	{
1622	ev_timer_set (&once->to, timeout, 0.);	2406	ev_timer_set (&once->to, timeout, 0.);
1623	ev_timer_start (EV_A_ &once->to);	2407	ev_timer_start (EV_A_ &once->to);
1624	}
1625	}	2408	}
1626	}	2409	}
		2410
		2411	#if EV_MULTIPLICITY
		2412	#include "ev_wrap.h"
		2413	#endif
1627		2414
1628	#ifdef __cplusplus	2415	#ifdef __cplusplus
1629	}	2416	}
1630	#endif	2417	#endif
1631		2418

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