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Comparing libev/ev.c (file contents):
Revision 1.92 by root, Sun Nov 11 00:08:54 2007 UTC vs.
Revision 1.153 by root, Wed Nov 28 11:41:18 2007 UTC

…		…
32	#ifdef __cplusplus	32	#ifdef __cplusplus
33	extern "C" {	33	extern "C" {
34	#endif	34	#endif
35		35
36	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
37	# include "config.h"	40	# include "config.h"
		41	# endif
38		42
39	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
40	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
41	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
42	# endif	57	# endif
43		58
		59	# ifndef EV_USE_SELECT
44	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
45	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
46	# endif	65	# endif
47		66
		67	# ifndef EV_USE_POLL
48	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
49	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
50	# endif	73	# endif
51		74
		75	# ifndef EV_USE_EPOLL
52	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
53	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
54	# endif	81	# endif
55		82
		83	# ifndef EV_USE_KQUEUE
56	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
57	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
		97	# endif
		98
		99	# ifndef EV_USE_INOTIFY
		100	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		101	# define EV_USE_INOTIFY 1
		102	# else
		103	# define EV_USE_INOTIFY 0
		104	# endif
58	# endif	105	# endif
59		106
60	#endif	107	#endif
61		108
62	#include <math.h>	109	#include <math.h>
…		…
71	#include <sys/types.h>	118	#include <sys/types.h>
72	#include <time.h>	119	#include <time.h>
73		120
74	#include <signal.h>	121	#include <signal.h>
75		122
76	#ifndef WIN32
77	# include <unistd.h>
78	# include <sys/time.h>
79	# include <sys/wait.h>
80	#endif
81	/**/
82
83	#ifndef EV_USE_MONOTONIC
84	# define EV_USE_MONOTONIC 1
85	#endif
86
87	#ifndef EV_USE_SELECT
88	# define EV_USE_SELECT 1
89	#endif
90
91	#ifndef EV_USE_POLL
92	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
93	#endif
94
95	#ifndef EV_USE_EPOLL
96	# define EV_USE_EPOLL 0
97	#endif
98
99	#ifndef EV_USE_KQUEUE
100	# define EV_USE_KQUEUE 0
101	#endif
102
103	#ifndef EV_USE_WIN32
104	# ifdef WIN32
105	# define EV_USE_WIN32 0 /* it does not exist, use select */
106	# undef EV_USE_SELECT
107	# define EV_USE_SELECT 1
108	# else
109	# define EV_USE_WIN32 0
110	# endif
111	#endif
112
113	#ifndef EV_USE_REALTIME
114	# define EV_USE_REALTIME 1
115	#endif
116
117	/**/
118
119	#ifndef CLOCK_MONOTONIC
120	# undef EV_USE_MONOTONIC
121	# define EV_USE_MONOTONIC 0
122	#endif
123
124	#ifndef CLOCK_REALTIME
125	# undef EV_USE_REALTIME
126	# define EV_USE_REALTIME 0
127	#endif
128
129	/**/
130
131	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
132	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
133	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
134	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
135
136	#ifdef EV_H	123	#ifdef EV_H
137	# include EV_H	124	# include EV_H
138	#else	125	#else
139	# include "ev.h"	126	# include "ev.h"
140	#endif	127	#endif
141		128
		129	#ifndef _WIN32
		130	# include <sys/time.h>
		131	# include <sys/wait.h>
		132	# include <unistd.h>
		133	#else
		134	# define WIN32_LEAN_AND_MEAN
		135	# include <windows.h>
		136	# ifndef EV_SELECT_IS_WINSOCKET
		137	# define EV_SELECT_IS_WINSOCKET 1
		138	# endif
		139	#endif
		140
		141	/**/
		142
		143	#ifndef EV_USE_MONOTONIC
		144	# define EV_USE_MONOTONIC 0
		145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
		149	#endif
		150
		151	#ifndef EV_USE_SELECT
		152	# define EV_USE_SELECT 1
		153	#endif
		154
		155	#ifndef EV_USE_POLL
		156	# ifdef _WIN32
		157	# define EV_USE_POLL 0
		158	# else
		159	# define EV_USE_POLL 1
		160	# endif
		161	#endif
		162
		163	#ifndef EV_USE_EPOLL
		164	# define EV_USE_EPOLL 0
		165	#endif
		166
		167	#ifndef EV_USE_KQUEUE
		168	# define EV_USE_KQUEUE 0
		169	#endif
		170
		171	#ifndef EV_USE_PORT
		172	# define EV_USE_PORT 0
		173	#endif
		174
		175	#ifndef EV_USE_INOTIFY
		176	# define EV_USE_INOTIFY 0
		177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
		182	# else
		183	# define EV_PID_HASHSIZE 16
		184	# endif
		185	#endif
		186
		187	#ifndef EV_INOTIFY_HASHSIZE
		188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
		193	#endif
		194
		195	/**/
		196
		197	#ifndef CLOCK_MONOTONIC
		198	# undef EV_USE_MONOTONIC
		199	# define EV_USE_MONOTONIC 0
		200	#endif
		201
		202	#ifndef CLOCK_REALTIME
		203	# undef EV_USE_REALTIME
		204	# define EV_USE_REALTIME 0
		205	#endif
		206
		207	#if EV_SELECT_IS_WINSOCKET
		208	# include <winsock.h>
		209	#endif
		210
		211	#if !EV_STAT_ENABLE
		212	# define EV_USE_INOTIFY 0
		213	#endif
		214
		215	#if EV_USE_INOTIFY
		216	# include <sys/inotify.h>
		217	#endif
		218
		219	/**/
		220
		221	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
		222	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
		223	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
		224
142	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
143	# define expect(expr,value) __builtin_expect ((expr),(value))	226	# define expect(expr,value) __builtin_expect ((expr),(value))
		227	# define inline_size static inline /* inline for codesize */
		228	# if EV_MINIMAL
144	# define inline inline	229	# define noinline __attribute__ ((noinline))
		230	# define inline_speed static noinline
		231	# else
		232	# define noinline
		233	# define inline_speed static inline
		234	# endif
145	#else	235	#else
146	# define expect(expr,value) (expr)	236	# define expect(expr,value) (expr)
		237	# define inline_speed static
147	# define inline static	238	# define inline_size static
		239	# define noinline
148	#endif	240	#endif
149		241
150	#define expect_false(expr) expect ((expr) != 0, 0)	242	#define expect_false(expr) expect ((expr) != 0, 0)
151	#define expect_true(expr) expect ((expr) != 0, 1)	243	#define expect_true(expr) expect ((expr) != 0, 1)
152		244
153	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
154	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	246	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
155		247
		248	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		249	#define EMPTY2(a,b) /* used to suppress some warnings */
		250
156	typedef struct ev_watcher *W;	251	typedef ev_watcher *W;
157	typedef struct ev_watcher_list *WL;	252	typedef ev_watcher_list *WL;
158	typedef struct ev_watcher_time *WT;	253	typedef ev_watcher_time *WT;
159		254
160	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
161		256
		257	#ifdef _WIN32
162	#include "ev_win32.c"	258	# include "ev_win32.c"
		259	#endif
163		260
164	/*****************************************************************************/	261	/*****************************************************************************/
165		262
166	static void (*syserr_cb)(const char *msg);	263	static void (*syserr_cb)(const char *msg);
167		264
		265	void
168	void ev_set_syserr_cb (void (*cb)(const char *msg))	266	ev_set_syserr_cb (void (*cb)(const char *msg))
169	{	267	{
170	syserr_cb = cb;	268	syserr_cb = cb;
171	}	269	}
172		270
173	static void	271	static void noinline
174	syserr (const char *msg)	272	syserr (const char *msg)
175	{	273	{
176	if (!msg)	274	if (!msg)
177	msg = "(libev) system error";	275	msg = "(libev) system error";
178		276
…		…
183	perror (msg);	281	perror (msg);
184	abort ();	282	abort ();
185	}	283	}
186	}	284	}
187		285
188	static void *(*alloc)(void *ptr, long size);	286	static void *(*alloc)(void *ptr, size_t size) = realloc;
189		287
		288	void
190	void ev_set_allocator (void *(*cb)(void *ptr, long size))	289	ev_set_allocator (void *(*cb)(void *ptr, size_t size))
191	{	290	{
192	alloc = cb;	291	alloc = cb;
193	}	292	}
194		293
195	static void *	294	inline_speed void *
196	ev_realloc (void *ptr, long size)	295	ev_realloc (void *ptr, size_t size)
197	{	296	{
198	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	297	ptr = alloc (ptr, size);
199		298
200	if (!ptr && size)	299	if (!ptr && size)
201	{	300	{
202	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	301	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", (long)size);
203	abort ();	302	abort ();
204	}	303	}
205		304
206	return ptr;	305	return ptr;
207	}	306	}
…		…
214	typedef struct	313	typedef struct
215	{	314	{
216	WL head;	315	WL head;
217	unsigned char events;	316	unsigned char events;
218	unsigned char reify;	317	unsigned char reify;
		318	#if EV_SELECT_IS_WINSOCKET
		319	SOCKET handle;
		320	#endif
219	} ANFD;	321	} ANFD;
220		322
221	typedef struct	323	typedef struct
222	{	324	{
223	W w;	325	W w;
224	int events;	326	int events;
225	} ANPENDING;	327	} ANPENDING;
226		328
		329	typedef struct
		330	{
		331	#if EV_USE_INOTIFY
		332	WL head;
		333	#endif
		334	} ANFS;
		335
227	#if EV_MULTIPLICITY	336	#if EV_MULTIPLICITY
228		337
229	struct ev_loop	338	struct ev_loop
230	{	339	{
231	ev_tstamp ev_rt_now;	340	ev_tstamp ev_rt_now;
		341	#define ev_rt_now ((loop)->ev_rt_now)
232	#define VAR(name,decl) decl;	342	#define VAR(name,decl) decl;
233	#include "ev_vars.h"	343	#include "ev_vars.h"
234	#undef VAR	344	#undef VAR
235	};	345	};
236	#include "ev_wrap.h"	346	#include "ev_wrap.h"
237		347
238	struct ev_loop default_loop_struct;	348	static struct ev_loop default_loop_struct;
239	static struct ev_loop *default_loop;	349	struct ev_loop *ev_default_loop_ptr;
240		350
241	#else	351	#else
242		352
243	ev_tstamp ev_rt_now;	353	ev_tstamp ev_rt_now;
244	#define VAR(name,decl) static decl;	354	#define VAR(name,decl) static decl;
245	#include "ev_vars.h"	355	#include "ev_vars.h"
246	#undef VAR	356	#undef VAR
247		357
248	static int default_loop;	358	static int ev_default_loop_ptr;
249		359
250	#endif	360	#endif
251		361
252	/*****************************************************************************/	362	/*****************************************************************************/
253		363
…		…
263	gettimeofday (&tv, 0);	373	gettimeofday (&tv, 0);
264	return tv.tv_sec + tv.tv_usec * 1e-6;	374	return tv.tv_sec + tv.tv_usec * 1e-6;
265	#endif	375	#endif
266	}	376	}
267		377
268	inline ev_tstamp	378	ev_tstamp inline_size
269	get_clock (void)	379	get_clock (void)
270	{	380	{
271	#if EV_USE_MONOTONIC	381	#if EV_USE_MONOTONIC
272	if (expect_true (have_monotonic))	382	if (expect_true (have_monotonic))
273	{	383	{
…		…
286	{	396	{
287	return ev_rt_now;	397	return ev_rt_now;
288	}	398	}
289	#endif	399	#endif
290		400
291	#define array_roundsize(type,n) ((n) | 4 & ~3)	401	#define array_roundsize(type,n) (((n) | 4) & ~3)
292		402
293	#define array_needsize(type,base,cur,cnt,init) \	403	#define array_needsize(type,base,cur,cnt,init) \
294	if (expect_false ((cnt) > cur)) \	404	if (expect_false ((cnt) > cur)) \
295	{ \	405	{ \
296	int newcnt = cur; \	406	int newcnt = cur; \
…		…
311	stem ## max = array_roundsize (stem ## cnt >> 1); \	421	stem ## max = array_roundsize (stem ## cnt >> 1); \
312	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	422	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
313	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	423	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
314	}	424	}
315		425
316	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
317	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
318	#define array_free_microshit(stem) \
319	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
320
321	#define array_free(stem, idx) \	426	#define array_free(stem, idx) \
322	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	427	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
323		428
324	/*****************************************************************************/	429	/*****************************************************************************/
325		430
326	static void	431	void noinline
		432	ev_feed_event (EV_P_ void *w, int revents)
		433	{
		434	W w_ = (W)w;
		435
		436	if (expect_false (w_->pending))
		437	{
		438	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		439	return;
		440	}
		441
		442	w_->pending = ++pendingcnt [ABSPRI (w_)];
		443	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		444	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		445	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		446	}
		447
		448	void inline_size
		449	queue_events (EV_P_ W *events, int eventcnt, int type)
		450	{
		451	int i;
		452
		453	for (i = 0; i < eventcnt; ++i)
		454	ev_feed_event (EV_A_ events [i], type);
		455	}
		456
		457	/*****************************************************************************/
		458
		459	void inline_size
327	anfds_init (ANFD *base, int count)	460	anfds_init (ANFD *base, int count)
328	{	461	{
329	while (count--)	462	while (count--)
330	{	463	{
331	base->head = 0;	464	base->head = 0;
…		…
334		467
335	++base;	468	++base;
336	}	469	}
337	}	470	}
338		471
339	void	472	void inline_speed
340	ev_feed_event (EV_P_ void *w, int revents)
341	{
342	W w_ = (W)w;
343
344	if (w_->pending)
345	{
346	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
347	return;
348	}
349
350	w_->pending = ++pendingcnt [ABSPRI (w_)];
351	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
352	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
353	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
354	}
355
356	static void
357	queue_events (EV_P_ W *events, int eventcnt, int type)
358	{
359	int i;
360
361	for (i = 0; i < eventcnt; ++i)
362	ev_feed_event (EV_A_ events [i], type);
363	}
364
365	inline void
366	fd_event (EV_P_ int fd, int revents)	473	fd_event (EV_P_ int fd, int revents)
367	{	474	{
368	ANFD *anfd = anfds + fd;	475	ANFD *anfd = anfds + fd;
369	struct ev_io *w;	476	ev_io *w;
370		477
371	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	478	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
372	{	479	{
373	int ev = w->events & revents;	480	int ev = w->events & revents;
374		481
375	if (ev)	482	if (ev)
376	ev_feed_event (EV_A_ (W)w, ev);	483	ev_feed_event (EV_A_ (W)w, ev);
…		…
381	ev_feed_fd_event (EV_P_ int fd, int revents)	488	ev_feed_fd_event (EV_P_ int fd, int revents)
382	{	489	{
383	fd_event (EV_A_ fd, revents);	490	fd_event (EV_A_ fd, revents);
384	}	491	}
385		492
386	/*****************************************************************************/	493	void inline_size
387
388	static void
389	fd_reify (EV_P)	494	fd_reify (EV_P)
390	{	495	{
391	int i;	496	int i;
392		497
393	for (i = 0; i < fdchangecnt; ++i)	498	for (i = 0; i < fdchangecnt; ++i)
394	{	499	{
395	int fd = fdchanges [i];	500	int fd = fdchanges [i];
396	ANFD *anfd = anfds + fd;	501	ANFD *anfd = anfds + fd;
397	struct ev_io *w;	502	ev_io *w;
398		503
399	int events = 0;	504	int events = 0;
400		505
401	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	506	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
402	events |= w->events;	507	events |= w->events;
403		508
		509	#if EV_SELECT_IS_WINSOCKET
		510	if (events)
		511	{
		512	unsigned long argp;
		513	anfd->handle = _get_osfhandle (fd);
		514	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		515	}
		516	#endif
		517
404	anfd->reify = 0;	518	anfd->reify = 0;
405		519
406	method_modify (EV_A_ fd, anfd->events, events);	520	backend_modify (EV_A_ fd, anfd->events, events);
407	anfd->events = events;	521	anfd->events = events;
408	}	522	}
409		523
410	fdchangecnt = 0;	524	fdchangecnt = 0;
411	}	525	}
412		526
413	static void	527	void inline_size
414	fd_change (EV_P_ int fd)	528	fd_change (EV_P_ int fd)
415	{	529	{
416	if (anfds [fd].reify)	530	if (expect_false (anfds [fd].reify))
417	return;	531	return;
418		532
419	anfds [fd].reify = 1;	533	anfds [fd].reify = 1;
420		534
421	++fdchangecnt;	535	++fdchangecnt;
422	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	536	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
423	fdchanges [fdchangecnt - 1] = fd;	537	fdchanges [fdchangecnt - 1] = fd;
424	}	538	}
425		539
426	static void	540	void inline_speed
427	fd_kill (EV_P_ int fd)	541	fd_kill (EV_P_ int fd)
428	{	542	{
429	struct ev_io *w;	543	ev_io *w;
430		544
431	while ((w = (struct ev_io *)anfds [fd].head))	545	while ((w = (ev_io *)anfds [fd].head))
432	{	546	{
433	ev_io_stop (EV_A_ w);	547	ev_io_stop (EV_A_ w);
434	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	548	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
435	}	549	}
436	}	550	}
437		551
438	static int	552	int inline_size
439	fd_valid (int fd)	553	fd_valid (int fd)
440	{	554	{
441	#ifdef WIN32	555	#ifdef _WIN32
442	return !!win32_get_osfhandle (fd);	556	return _get_osfhandle (fd) != -1;
443	#else	557	#else
444	return fcntl (fd, F_GETFD) != -1;	558	return fcntl (fd, F_GETFD) != -1;
445	#endif	559	#endif
446	}	560	}
447		561
448	/* called on EBADF to verify fds */	562	/* called on EBADF to verify fds */
449	static void	563	static void noinline
450	fd_ebadf (EV_P)	564	fd_ebadf (EV_P)
451	{	565	{
452	int fd;	566	int fd;
453		567
454	for (fd = 0; fd < anfdmax; ++fd)	568	for (fd = 0; fd < anfdmax; ++fd)
…		…
456	if (!fd_valid (fd) == -1 && errno == EBADF)	570	if (!fd_valid (fd) == -1 && errno == EBADF)
457	fd_kill (EV_A_ fd);	571	fd_kill (EV_A_ fd);
458	}	572	}
459		573
460	/* called on ENOMEM in select/poll to kill some fds and retry */	574	/* called on ENOMEM in select/poll to kill some fds and retry */
461	static void	575	static void noinline
462	fd_enomem (EV_P)	576	fd_enomem (EV_P)
463	{	577	{
464	int fd;	578	int fd;
465		579
466	for (fd = anfdmax; fd--; )	580	for (fd = anfdmax; fd--; )
…		…
469	fd_kill (EV_A_ fd);	583	fd_kill (EV_A_ fd);
470	return;	584	return;
471	}	585	}
472	}	586	}
473		587
474	/* usually called after fork if method needs to re-arm all fds from scratch */	588	/* usually called after fork if backend needs to re-arm all fds from scratch */
475	static void	589	static void noinline
476	fd_rearm_all (EV_P)	590	fd_rearm_all (EV_P)
477	{	591	{
478	int fd;	592	int fd;
479		593
480	/* this should be highly optimised to not do anything but set a flag */	594	/* this should be highly optimised to not do anything but set a flag */
…		…
486	}	600	}
487	}	601	}
488		602
489	/*****************************************************************************/	603	/*****************************************************************************/
490		604
491	static void	605	void inline_speed
492	upheap (WT *heap, int k)	606	upheap (WT *heap, int k)
493	{	607	{
494	WT w = heap [k];	608	WT w = heap [k];
495		609
496	while (k && heap [k >> 1]->at > w->at)	610	while (k && heap [k >> 1]->at > w->at)
…		…
503	heap [k] = w;	617	heap [k] = w;
504	((W)heap [k])->active = k + 1;	618	((W)heap [k])->active = k + 1;
505		619
506	}	620	}
507		621
508	static void	622	void inline_speed
509	downheap (WT *heap, int N, int k)	623	downheap (WT *heap, int N, int k)
510	{	624	{
511	WT w = heap [k];	625	WT w = heap [k];
512		626
513	while (k < (N >> 1))	627	while (k < (N >> 1))
…		…
527		641
528	heap [k] = w;	642	heap [k] = w;
529	((W)heap [k])->active = k + 1;	643	((W)heap [k])->active = k + 1;
530	}	644	}
531		645
532	inline void	646	void inline_size
533	adjustheap (WT *heap, int N, int k, ev_tstamp at)	647	adjustheap (WT *heap, int N, int k)
534	{	648	{
535	ev_tstamp old_at = heap [k]->at;	649	upheap (heap, k);
536	heap [k]->at = at;
537
538	if (old_at < at)
539	downheap (heap, N, k);	650	downheap (heap, N, k);
540	else
541	upheap (heap, k);
542	}	651	}
543		652
544	/*****************************************************************************/	653	/*****************************************************************************/
545		654
546	typedef struct	655	typedef struct
…		…
552	static ANSIG *signals;	661	static ANSIG *signals;
553	static int signalmax;	662	static int signalmax;
554		663
555	static int sigpipe [2];	664	static int sigpipe [2];
556	static sig_atomic_t volatile gotsig;	665	static sig_atomic_t volatile gotsig;
557	static struct ev_io sigev;	666	static ev_io sigev;
558		667
559	static void	668	void inline_size
560	signals_init (ANSIG *base, int count)	669	signals_init (ANSIG *base, int count)
561	{	670	{
562	while (count--)	671	while (count--)
563	{	672	{
564	base->head = 0;	673	base->head = 0;
…		…
569	}	678	}
570		679
571	static void	680	static void
572	sighandler (int signum)	681	sighandler (int signum)
573	{	682	{
574	#if WIN32	683	#if _WIN32
575	signal (signum, sighandler);	684	signal (signum, sighandler);
576	#endif	685	#endif
577		686
578	signals [signum - 1].gotsig = 1;	687	signals [signum - 1].gotsig = 1;
579		688
580	if (!gotsig)	689	if (!gotsig)
581	{	690	{
582	int old_errno = errno;	691	int old_errno = errno;
583	gotsig = 1;	692	gotsig = 1;
584	#ifdef WIN32
585	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
586	#else
587	write (sigpipe [1], &signum, 1);	693	write (sigpipe [1], &signum, 1);
588	#endif
589	errno = old_errno;	694	errno = old_errno;
590	}	695	}
591	}	696	}
592		697
593	void	698	void noinline
594	ev_feed_signal_event (EV_P_ int signum)	699	ev_feed_signal_event (EV_P_ int signum)
595	{	700	{
596	WL w;	701	WL w;
597		702
598	#if EV_MULTIPLICITY	703	#if EV_MULTIPLICITY
599	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	704	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
600	#endif	705	#endif
601		706
602	--signum;	707	--signum;
603		708
604	if (signum < 0 || signum >= signalmax)	709	if (signum < 0 || signum >= signalmax)
…		…
609	for (w = signals [signum].head; w; w = w->next)	714	for (w = signals [signum].head; w; w = w->next)
610	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	715	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
611	}	716	}
612		717
613	static void	718	static void
614	sigcb (EV_P_ struct ev_io *iow, int revents)	719	sigcb (EV_P_ ev_io *iow, int revents)
615	{	720	{
616	int signum;	721	int signum;
617		722
618	#ifdef WIN32
619	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
620	#else
621	read (sigpipe [0], &revents, 1);	723	read (sigpipe [0], &revents, 1);
622	#endif
623	gotsig = 0;	724	gotsig = 0;
624		725
625	for (signum = signalmax; signum--; )	726	for (signum = signalmax; signum--; )
626	if (signals [signum].gotsig)	727	if (signals [signum].gotsig)
627	ev_feed_signal_event (EV_A_ signum + 1);	728	ev_feed_signal_event (EV_A_ signum + 1);
628	}	729	}
629		730
630	static void	731	void inline_size
		732	fd_intern (int fd)
		733	{
		734	#ifdef _WIN32
		735	int arg = 1;
		736	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		737	#else
		738	fcntl (fd, F_SETFD, FD_CLOEXEC);
		739	fcntl (fd, F_SETFL, O_NONBLOCK);
		740	#endif
		741	}
		742
		743	static void noinline
631	siginit (EV_P)	744	siginit (EV_P)
632	{	745	{
633	#ifndef WIN32	746	fd_intern (sigpipe [0]);
634	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	747	fd_intern (sigpipe [1]);
635	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
636
637	/* rather than sort out wether we really need nb, set it */
638	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
639	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
640	#endif
641		748
642	ev_io_set (&sigev, sigpipe [0], EV_READ);	749	ev_io_set (&sigev, sigpipe [0], EV_READ);
643	ev_io_start (EV_A_ &sigev);	750	ev_io_start (EV_A_ &sigev);
644	ev_unref (EV_A); /* child watcher should not keep loop alive */	751	ev_unref (EV_A); /* child watcher should not keep loop alive */
645	}	752	}
646		753
647	/*****************************************************************************/	754	/*****************************************************************************/
648		755
649	static struct ev_child *childs [PID_HASHSIZE];	756	static ev_child *childs [EV_PID_HASHSIZE];
650		757
651	#ifndef WIN32	758	#ifndef _WIN32
652		759
653	static struct ev_signal childev;	760	static ev_signal childev;
654		761
655	#ifndef WCONTINUED	762	void inline_speed
656	# define WCONTINUED 0
657	#endif
658
659	static void
660	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	763	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
661	{	764	{
662	struct ev_child *w;	765	ev_child *w;
663		766
664	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	767	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
665	if (w->pid == pid || !w->pid)	768	if (w->pid == pid || !w->pid)
666	{	769	{
667	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	770	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
668	w->rpid = pid;	771	w->rpid = pid;
669	w->rstatus = status;	772	w->rstatus = status;
670	ev_feed_event (EV_A_ (W)w, EV_CHILD);	773	ev_feed_event (EV_A_ (W)w, EV_CHILD);
671	}	774	}
672	}	775	}
673		776
		777	#ifndef WCONTINUED
		778	# define WCONTINUED 0
		779	#endif
		780
674	static void	781	static void
675	childcb (EV_P_ struct ev_signal *sw, int revents)	782	childcb (EV_P_ ev_signal *sw, int revents)
676	{	783	{
677	int pid, status;	784	int pid, status;
678		785
		786	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
679	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	787	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
680	{	788	if (!WCONTINUED
		789	|| errno != EINVAL
		790	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		791	return;
		792
681	/* make sure we are called again until all childs have been reaped */	793	/* make sure we are called again until all childs have been reaped */
		794	/* we need to do it this way so that the callback gets called before we continue */
682	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	795	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
683		796
684	child_reap (EV_A_ sw, pid, pid, status);	797	child_reap (EV_A_ sw, pid, pid, status);
		798	if (EV_PID_HASHSIZE > 1)
685	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	799	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
686	}
687	}	800	}
688		801
689	#endif	802	#endif
690		803
691	/*****************************************************************************/	804	/*****************************************************************************/
692		805
		806	#if EV_USE_PORT
		807	# include "ev_port.c"
		808	#endif
693	#if EV_USE_KQUEUE	809	#if EV_USE_KQUEUE
694	# include "ev_kqueue.c"	810	# include "ev_kqueue.c"
695	#endif	811	#endif
696	#if EV_USE_EPOLL	812	#if EV_USE_EPOLL
697	# include "ev_epoll.c"	813	# include "ev_epoll.c"
…		…
714	{	830	{
715	return EV_VERSION_MINOR;	831	return EV_VERSION_MINOR;
716	}	832	}
717		833
718	/* return true if we are running with elevated privileges and should ignore env variables */	834	/* return true if we are running with elevated privileges and should ignore env variables */
719	static int	835	int inline_size
720	enable_secure (void)	836	enable_secure (void)
721	{	837	{
722	#ifdef WIN32	838	#ifdef _WIN32
723	return 0;	839	return 0;
724	#else	840	#else
725	return getuid () != geteuid ()	841	return getuid () != geteuid ()
726	|| getgid () != getegid ();	842	|| getgid () != getegid ();
727	#endif	843	#endif
728	}	844	}
729		845
730	int	846	unsigned int
731	ev_method (EV_P)	847	ev_supported_backends (void)
732	{	848	{
733	return method;	849	unsigned int flags = 0;
734	}
735		850
736	static void	851	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
737	loop_init (EV_P_ int methods)	852	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		853	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		854	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		855	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		856
		857	return flags;
		858	}
		859
		860	unsigned int
		861	ev_recommended_backends (void)
738	{	862	{
739	if (!method)	863	unsigned int flags = ev_supported_backends ();
		864
		865	#ifndef __NetBSD__
		866	/* kqueue is borked on everything but netbsd apparently */
		867	/* it usually doesn't work correctly on anything but sockets and pipes */
		868	flags &= ~EVBACKEND_KQUEUE;
		869	#endif
		870	#ifdef __APPLE__
		871	// flags &= ~EVBACKEND_KQUEUE; for documentation
		872	flags &= ~EVBACKEND_POLL;
		873	#endif
		874
		875	return flags;
		876	}
		877
		878	unsigned int
		879	ev_embeddable_backends (void)
		880	{
		881	return EVBACKEND_EPOLL
		882	| EVBACKEND_KQUEUE
		883	| EVBACKEND_PORT;
		884	}
		885
		886	unsigned int
		887	ev_backend (EV_P)
		888	{
		889	return backend;
		890	}
		891
		892	static void noinline
		893	loop_init (EV_P_ unsigned int flags)
		894	{
		895	if (!backend)
740	{	896	{
741	#if EV_USE_MONOTONIC	897	#if EV_USE_MONOTONIC
742	{	898	{
743	struct timespec ts;	899	struct timespec ts;
744	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	900	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
749	ev_rt_now = ev_time ();	905	ev_rt_now = ev_time ();
750	mn_now = get_clock ();	906	mn_now = get_clock ();
751	now_floor = mn_now;	907	now_floor = mn_now;
752	rtmn_diff = ev_rt_now - mn_now;	908	rtmn_diff = ev_rt_now - mn_now;
753		909
754	if (methods == EVMETHOD_AUTO)	910	if (!(flags & EVFLAG_NOENV)
755	if (!enable_secure () && getenv ("LIBEV_METHODS"))	911	&& !enable_secure ()
		912	&& getenv ("LIBEV_FLAGS"))
756	methods = atoi (getenv ("LIBEV_METHODS"));	913	flags = atoi (getenv ("LIBEV_FLAGS"));
757	else
758	methods = EVMETHOD_ANY;
759		914
760	method = 0;	915	if (!(flags & 0x0000ffffUL))
		916	flags |= ev_recommended_backends ();
		917
		918	backend = 0;
		919	backend_fd = -1;
761	#if EV_USE_WIN32	920	#if EV_USE_INOTIFY
762	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	921	fs_fd = -2;
		922	#endif
		923
		924	#if EV_USE_PORT
		925	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
763	#endif	926	#endif
764	#if EV_USE_KQUEUE	927	#if EV_USE_KQUEUE
765	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	928	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
766	#endif	929	#endif
767	#if EV_USE_EPOLL	930	#if EV_USE_EPOLL
768	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	931	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
769	#endif	932	#endif
770	#if EV_USE_POLL	933	#if EV_USE_POLL
771	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	934	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
772	#endif	935	#endif
773	#if EV_USE_SELECT	936	#if EV_USE_SELECT
774	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	937	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
775	#endif	938	#endif
776		939
777	ev_init (&sigev, sigcb);	940	ev_init (&sigev, sigcb);
778	ev_set_priority (&sigev, EV_MAXPRI);	941	ev_set_priority (&sigev, EV_MAXPRI);
779	}	942	}
780	}	943	}
781		944
782	void	945	static void noinline
783	loop_destroy (EV_P)	946	loop_destroy (EV_P)
784	{	947	{
785	int i;	948	int i;
786		949
787	#if EV_USE_WIN32	950	#if EV_USE_INOTIFY
788	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	951	if (fs_fd >= 0)
		952	close (fs_fd);
		953	#endif
		954
		955	if (backend_fd >= 0)
		956	close (backend_fd);
		957
		958	#if EV_USE_PORT
		959	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
789	#endif	960	#endif
790	#if EV_USE_KQUEUE	961	#if EV_USE_KQUEUE
791	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	962	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
792	#endif	963	#endif
793	#if EV_USE_EPOLL	964	#if EV_USE_EPOLL
794	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	965	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
795	#endif	966	#endif
796	#if EV_USE_POLL	967	#if EV_USE_POLL
797	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	968	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
798	#endif	969	#endif
799	#if EV_USE_SELECT	970	#if EV_USE_SELECT
800	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	971	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
801	#endif	972	#endif
802		973
803	for (i = NUMPRI; i--; )	974	for (i = NUMPRI; i--; )
804	array_free (pending, [i]);	975	array_free (pending, [i]);
805		976
806	/* have to use the microsoft-never-gets-it-right macro */	977	/* have to use the microsoft-never-gets-it-right macro */
807	array_free_microshit (fdchange);	978	array_free (fdchange, EMPTY0);
808	array_free_microshit (timer);	979	array_free (timer, EMPTY0);
809	array_free_microshit (periodic);	980	#if EV_PERIODIC_ENABLE
810	array_free_microshit (idle);	981	array_free (periodic, EMPTY0);
811	array_free_microshit (prepare);	982	#endif
812	array_free_microshit (check);	983	array_free (idle, EMPTY0);
		984	array_free (prepare, EMPTY0);
		985	array_free (check, EMPTY0);
813		986
814	method = 0;	987	backend = 0;
815	}	988	}
816		989
817	static void	990	void inline_size
818	loop_fork (EV_P)	991	loop_fork (EV_P)
819	{	992	{
		993	#if EV_USE_PORT
		994	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		995	#endif
		996	#if EV_USE_KQUEUE
		997	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		998	#endif
820	#if EV_USE_EPOLL	999	#if EV_USE_EPOLL
821	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1000	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
822	#endif
823	#if EV_USE_KQUEUE
824	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
825	#endif	1001	#endif
826		1002
827	if (ev_is_active (&sigev))	1003	if (ev_is_active (&sigev))
828	{	1004	{
829	/* default loop */	1005	/* default loop */
…		…
842	postfork = 0;	1018	postfork = 0;
843	}	1019	}
844		1020
845	#if EV_MULTIPLICITY	1021	#if EV_MULTIPLICITY
846	struct ev_loop *	1022	struct ev_loop *
847	ev_loop_new (int methods)	1023	ev_loop_new (unsigned int flags)
848	{	1024	{
849	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1025	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
850		1026
851	memset (loop, 0, sizeof (struct ev_loop));	1027	memset (loop, 0, sizeof (struct ev_loop));
852		1028
853	loop_init (EV_A_ methods);	1029	loop_init (EV_A_ flags);
854		1030
855	if (ev_method (EV_A))	1031	if (ev_backend (EV_A))
856	return loop;	1032	return loop;
857		1033
858	return 0;	1034	return 0;
859	}	1035	}
860		1036
…		…
873		1049
874	#endif	1050	#endif
875		1051
876	#if EV_MULTIPLICITY	1052	#if EV_MULTIPLICITY
877	struct ev_loop *	1053	struct ev_loop *
		1054	ev_default_loop_init (unsigned int flags)
878	#else	1055	#else
879	int	1056	int
		1057	ev_default_loop (unsigned int flags)
880	#endif	1058	#endif
881	ev_default_loop (int methods)
882	{	1059	{
883	if (sigpipe [0] == sigpipe [1])	1060	if (sigpipe [0] == sigpipe [1])
884	if (pipe (sigpipe))	1061	if (pipe (sigpipe))
885	return 0;	1062	return 0;
886		1063
887	if (!default_loop)	1064	if (!ev_default_loop_ptr)
888	{	1065	{
889	#if EV_MULTIPLICITY	1066	#if EV_MULTIPLICITY
890	struct ev_loop *loop = default_loop = &default_loop_struct;	1067	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
891	#else	1068	#else
892	default_loop = 1;	1069	ev_default_loop_ptr = 1;
893	#endif	1070	#endif
894		1071
895	loop_init (EV_A_ methods);	1072	loop_init (EV_A_ flags);
896		1073
897	if (ev_method (EV_A))	1074	if (ev_backend (EV_A))
898	{	1075	{
899	siginit (EV_A);	1076	siginit (EV_A);
900		1077
901	#ifndef WIN32	1078	#ifndef _WIN32
902	ev_signal_init (&childev, childcb, SIGCHLD);	1079	ev_signal_init (&childev, childcb, SIGCHLD);
903	ev_set_priority (&childev, EV_MAXPRI);	1080	ev_set_priority (&childev, EV_MAXPRI);
904	ev_signal_start (EV_A_ &childev);	1081	ev_signal_start (EV_A_ &childev);
905	ev_unref (EV_A); /* child watcher should not keep loop alive */	1082	ev_unref (EV_A); /* child watcher should not keep loop alive */
906	#endif	1083	#endif
907	}	1084	}
908	else	1085	else
909	default_loop = 0;	1086	ev_default_loop_ptr = 0;
910	}	1087	}
911		1088
912	return default_loop;	1089	return ev_default_loop_ptr;
913	}	1090	}
914		1091
915	void	1092	void
916	ev_default_destroy (void)	1093	ev_default_destroy (void)
917	{	1094	{
918	#if EV_MULTIPLICITY	1095	#if EV_MULTIPLICITY
919	struct ev_loop *loop = default_loop;	1096	struct ev_loop *loop = ev_default_loop_ptr;
920	#endif	1097	#endif
921		1098
922	#ifndef WIN32	1099	#ifndef _WIN32
923	ev_ref (EV_A); /* child watcher */	1100	ev_ref (EV_A); /* child watcher */
924	ev_signal_stop (EV_A_ &childev);	1101	ev_signal_stop (EV_A_ &childev);
925	#endif	1102	#endif
926		1103
927	ev_ref (EV_A); /* signal watcher */	1104	ev_ref (EV_A); /* signal watcher */
…		…
935		1112
936	void	1113	void
937	ev_default_fork (void)	1114	ev_default_fork (void)
938	{	1115	{
939	#if EV_MULTIPLICITY	1116	#if EV_MULTIPLICITY
940	struct ev_loop *loop = default_loop;	1117	struct ev_loop *loop = ev_default_loop_ptr;
941	#endif	1118	#endif
942		1119
943	if (method)	1120	if (backend)
944	postfork = 1;	1121	postfork = 1;
945	}	1122	}
946		1123
947	/*****************************************************************************/	1124	/*****************************************************************************/
948		1125
949	static int	1126	int inline_size
950	any_pending (EV_P)	1127	any_pending (EV_P)
951	{	1128	{
952	int pri;	1129	int pri;
953		1130
954	for (pri = NUMPRI; pri--; )	1131	for (pri = NUMPRI; pri--; )
…		…
956	return 1;	1133	return 1;
957		1134
958	return 0;	1135	return 0;
959	}	1136	}
960		1137
961	static void	1138	void inline_speed
962	call_pending (EV_P)	1139	call_pending (EV_P)
963	{	1140	{
964	int pri;	1141	int pri;
965		1142
966	for (pri = NUMPRI; pri--; )	1143	for (pri = NUMPRI; pri--; )
967	while (pendingcnt [pri])	1144	while (pendingcnt [pri])
968	{	1145	{
969	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1146	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
970		1147
971	if (p->w)	1148	if (expect_true (p->w))
972	{	1149	{
		1150	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1151
973	p->w->pending = 0;	1152	p->w->pending = 0;
974	EV_CB_INVOKE (p->w, p->events);	1153	EV_CB_INVOKE (p->w, p->events);
975	}	1154	}
976	}	1155	}
977	}	1156	}
978		1157
979	static void	1158	void inline_size
980	timers_reify (EV_P)	1159	timers_reify (EV_P)
981	{	1160	{
982	while (timercnt && ((WT)timers [0])->at <= mn_now)	1161	while (timercnt && ((WT)timers [0])->at <= mn_now)
983	{	1162	{
984	struct ev_timer *w = timers [0];	1163	ev_timer *w = timers [0];
985		1164
986	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1165	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
987		1166
988	/* first reschedule or stop timer */	1167	/* first reschedule or stop timer */
989	if (w->repeat)	1168	if (w->repeat)
990	{	1169	{
991	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1170	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
…		…
1001		1180
1002	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1181	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1003	}	1182	}
1004	}	1183	}
1005		1184
1006	static void	1185	#if EV_PERIODIC_ENABLE
		1186	void inline_size
1007	periodics_reify (EV_P)	1187	periodics_reify (EV_P)
1008	{	1188	{
1009	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1189	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1010	{	1190	{
1011	struct ev_periodic *w = periodics [0];	1191	ev_periodic *w = periodics [0];
1012		1192
1013	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1193	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1014		1194
1015	/* first reschedule or stop timer */	1195	/* first reschedule or stop timer */
1016	if (w->reschedule_cb)	1196	if (w->reschedule_cb)
1017	{	1197	{
1018	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1198	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1019
1020	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1199	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1021	downheap ((WT *)periodics, periodiccnt, 0);	1200	downheap ((WT *)periodics, periodiccnt, 0);
1022	}	1201	}
1023	else if (w->interval)	1202	else if (w->interval)
1024	{	1203	{
…		…
1031		1210
1032	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1211	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1033	}	1212	}
1034	}	1213	}
1035		1214
1036	static void	1215	static void noinline
1037	periodics_reschedule (EV_P)	1216	periodics_reschedule (EV_P)
1038	{	1217	{
1039	int i;	1218	int i;
1040		1219
1041	/* adjust periodics after time jump */	1220	/* adjust periodics after time jump */
1042	for (i = 0; i < periodiccnt; ++i)	1221	for (i = 0; i < periodiccnt; ++i)
1043	{	1222	{
1044	struct ev_periodic *w = periodics [i];	1223	ev_periodic *w = periodics [i];
1045		1224
1046	if (w->reschedule_cb)	1225	if (w->reschedule_cb)
1047	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1226	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1048	else if (w->interval)	1227	else if (w->interval)
1049	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1228	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
…		…
1051		1230
1052	/* now rebuild the heap */	1231	/* now rebuild the heap */
1053	for (i = periodiccnt >> 1; i--; )	1232	for (i = periodiccnt >> 1; i--; )
1054	downheap ((WT *)periodics, periodiccnt, i);	1233	downheap ((WT *)periodics, periodiccnt, i);
1055	}	1234	}
		1235	#endif
1056		1236
1057	inline int	1237	int inline_size
1058	time_update_monotonic (EV_P)	1238	time_update_monotonic (EV_P)
1059	{	1239	{
1060	mn_now = get_clock ();	1240	mn_now = get_clock ();
1061		1241
1062	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1242	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
…		…
1070	ev_rt_now = ev_time ();	1250	ev_rt_now = ev_time ();
1071	return 1;	1251	return 1;
1072	}	1252	}
1073	}	1253	}
1074		1254
1075	static void	1255	void inline_size
1076	time_update (EV_P)	1256	time_update (EV_P)
1077	{	1257	{
1078	int i;	1258	int i;
1079		1259
1080	#if EV_USE_MONOTONIC	1260	#if EV_USE_MONOTONIC
…		…
1082	{	1262	{
1083	if (time_update_monotonic (EV_A))	1263	if (time_update_monotonic (EV_A))
1084	{	1264	{
1085	ev_tstamp odiff = rtmn_diff;	1265	ev_tstamp odiff = rtmn_diff;
1086		1266
1087	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1267	/* loop a few times, before making important decisions.
		1268	* on the choice of "4": one iteration isn't enough,
		1269	* in case we get preempted during the calls to
		1270	* ev_time and get_clock. a second call is almost guarenteed
		1271	* to succeed in that case, though. and looping a few more times
		1272	* doesn't hurt either as we only do this on time-jumps or
		1273	* in the unlikely event of getting preempted here.
		1274	*/
		1275	for (i = 4; --i; )
1088	{	1276	{
1089	rtmn_diff = ev_rt_now - mn_now;	1277	rtmn_diff = ev_rt_now - mn_now;
1090		1278
1091	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1279	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1092	return; /* all is well */	1280	return; /* all is well */
…		…
1094	ev_rt_now = ev_time ();	1282	ev_rt_now = ev_time ();
1095	mn_now = get_clock ();	1283	mn_now = get_clock ();
1096	now_floor = mn_now;	1284	now_floor = mn_now;
1097	}	1285	}
1098		1286
		1287	# if EV_PERIODIC_ENABLE
1099	periodics_reschedule (EV_A);	1288	periodics_reschedule (EV_A);
		1289	# endif
1100	/* no timer adjustment, as the monotonic clock doesn't jump */	1290	/* no timer adjustment, as the monotonic clock doesn't jump */
1101	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1291	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1102	}	1292	}
1103	}	1293	}
1104	else	1294	else
…		…
1106	{	1296	{
1107	ev_rt_now = ev_time ();	1297	ev_rt_now = ev_time ();
1108		1298
1109	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1299	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1110	{	1300	{
		1301	#if EV_PERIODIC_ENABLE
1111	periodics_reschedule (EV_A);	1302	periodics_reschedule (EV_A);
		1303	#endif
1112		1304
1113	/* adjust timers. this is easy, as the offset is the same for all */	1305	/* adjust timers. this is easy, as the offset is the same for all */
1114	for (i = 0; i < timercnt; ++i)	1306	for (i = 0; i < timercnt; ++i)
1115	((WT)timers [i])->at += ev_rt_now - mn_now;	1307	((WT)timers [i])->at += ev_rt_now - mn_now;
1116	}	1308	}
…		…
1134	static int loop_done;	1326	static int loop_done;
1135		1327
1136	void	1328	void
1137	ev_loop (EV_P_ int flags)	1329	ev_loop (EV_P_ int flags)
1138	{	1330	{
1139	double block;
1140	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1331	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1332	? EVUNLOOP_ONE
		1333	: EVUNLOOP_CANCEL;
1141		1334
1142	do	1335	while (activecnt)
1143	{	1336	{
		1337	/* we might have forked, so reify kernel state if necessary */
		1338	#if EV_FORK_ENABLE
		1339	if (expect_false (postfork))
		1340	if (forkcnt)
		1341	{
		1342	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1343	call_pending (EV_A);
		1344	}
		1345	#endif
		1346
1144	/* queue check watchers (and execute them) */	1347	/* queue check watchers (and execute them) */
1145	if (expect_false (preparecnt))	1348	if (expect_false (preparecnt))
1146	{	1349	{
1147	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1350	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1148	call_pending (EV_A);	1351	call_pending (EV_A);
…		…
1154		1357
1155	/* update fd-related kernel structures */	1358	/* update fd-related kernel structures */
1156	fd_reify (EV_A);	1359	fd_reify (EV_A);
1157		1360
1158	/* calculate blocking time */	1361	/* calculate blocking time */
		1362	{
		1363	double block;
1159		1364
1160	/* we only need this for !monotonic clock or timers, but as we basically	1365	if (flags & EVLOOP_NONBLOCK || idlecnt)
1161	always have timers, we just calculate it always */	1366	block = 0.; /* do not block at all */
		1367	else
		1368	{
		1369	/* update time to cancel out callback processing overhead */
1162	#if EV_USE_MONOTONIC	1370	#if EV_USE_MONOTONIC
1163	if (expect_true (have_monotonic))	1371	if (expect_true (have_monotonic))
1164	time_update_monotonic (EV_A);	1372	time_update_monotonic (EV_A);
1165	else	1373	else
1166	#endif	1374	#endif
1167	{	1375	{
1168	ev_rt_now = ev_time ();	1376	ev_rt_now = ev_time ();
1169	mn_now = ev_rt_now;	1377	mn_now = ev_rt_now;
1170	}	1378	}
1171		1379
1172	if (flags & EVLOOP_NONBLOCK || idlecnt)
1173	block = 0.;
1174	else
1175	{
1176	block = MAX_BLOCKTIME;	1380	block = MAX_BLOCKTIME;
1177		1381
1178	if (timercnt)	1382	if (timercnt)
1179	{	1383	{
1180	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1384	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1181	if (block > to) block = to;	1385	if (block > to) block = to;
1182	}	1386	}
1183		1387
		1388	#if EV_PERIODIC_ENABLE
1184	if (periodiccnt)	1389	if (periodiccnt)
1185	{	1390	{
1186	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1391	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1187	if (block > to) block = to;	1392	if (block > to) block = to;
1188	}	1393	}
		1394	#endif
1189		1395
1190	if (block < 0.) block = 0.;	1396	if (expect_false (block < 0.)) block = 0.;
1191	}	1397	}
1192		1398
1193	method_poll (EV_A_ block);	1399	backend_poll (EV_A_ block);
		1400	}
1194		1401
1195	/* update ev_rt_now, do magic */	1402	/* update ev_rt_now, do magic */
1196	time_update (EV_A);	1403	time_update (EV_A);
1197		1404
1198	/* queue pending timers and reschedule them */	1405	/* queue pending timers and reschedule them */
1199	timers_reify (EV_A); /* relative timers called last */	1406	timers_reify (EV_A); /* relative timers called last */
		1407	#if EV_PERIODIC_ENABLE
1200	periodics_reify (EV_A); /* absolute timers called first */	1408	periodics_reify (EV_A); /* absolute timers called first */
		1409	#endif
1201		1410
1202	/* queue idle watchers unless io or timers are pending */	1411	/* queue idle watchers unless other events are pending */
1203	if (idlecnt && !any_pending (EV_A))	1412	if (idlecnt && !any_pending (EV_A))
1204	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1413	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1205		1414
1206	/* queue check watchers, to be executed first */	1415	/* queue check watchers, to be executed first */
1207	if (checkcnt)	1416	if (expect_false (checkcnt))
1208	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1417	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1209		1418
1210	call_pending (EV_A);	1419	call_pending (EV_A);
1211	}
1212	while (activecnt && !loop_done);
1213		1420
1214	if (loop_done != 2)	1421	if (expect_false (loop_done))
1215	loop_done = 0;	1422	break;
		1423	}
		1424
		1425	if (loop_done == EVUNLOOP_ONE)
		1426	loop_done = EVUNLOOP_CANCEL;
1216	}	1427	}
1217		1428
1218	void	1429	void
1219	ev_unloop (EV_P_ int how)	1430	ev_unloop (EV_P_ int how)
1220	{	1431	{
1221	loop_done = how;	1432	loop_done = how;
1222	}	1433	}
1223		1434
1224	/*****************************************************************************/	1435	/*****************************************************************************/
1225		1436
1226	inline void	1437	void inline_size
1227	wlist_add (WL *head, WL elem)	1438	wlist_add (WL *head, WL elem)
1228	{	1439	{
1229	elem->next = *head;	1440	elem->next = *head;
1230	*head = elem;	1441	*head = elem;
1231	}	1442	}
1232		1443
1233	inline void	1444	void inline_size
1234	wlist_del (WL *head, WL elem)	1445	wlist_del (WL *head, WL elem)
1235	{	1446	{
1236	while (*head)	1447	while (*head)
1237	{	1448	{
1238	if (*head == elem)	1449	if (*head == elem)
…		…
1243		1454
1244	head = &(*head)->next;	1455	head = &(*head)->next;
1245	}	1456	}
1246	}	1457	}
1247		1458
1248	inline void	1459	void inline_speed
1249	ev_clear_pending (EV_P_ W w)	1460	ev_clear_pending (EV_P_ W w)
1250	{	1461	{
1251	if (w->pending)	1462	if (w->pending)
1252	{	1463	{
1253	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1464	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1254	w->pending = 0;	1465	w->pending = 0;
1255	}	1466	}
1256	}	1467	}
1257		1468
1258	inline void	1469	void inline_speed
1259	ev_start (EV_P_ W w, int active)	1470	ev_start (EV_P_ W w, int active)
1260	{	1471	{
1261	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1472	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1262	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1473	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1263		1474
1264	w->active = active;	1475	w->active = active;
1265	ev_ref (EV_A);	1476	ev_ref (EV_A);
1266	}	1477	}
1267		1478
1268	inline void	1479	void inline_size
1269	ev_stop (EV_P_ W w)	1480	ev_stop (EV_P_ W w)
1270	{	1481	{
1271	ev_unref (EV_A);	1482	ev_unref (EV_A);
1272	w->active = 0;	1483	w->active = 0;
1273	}	1484	}
1274		1485
1275	/*****************************************************************************/	1486	/*****************************************************************************/
1276		1487
1277	void	1488	void
1278	ev_io_start (EV_P_ struct ev_io *w)	1489	ev_io_start (EV_P_ ev_io *w)
1279	{	1490	{
1280	int fd = w->fd;	1491	int fd = w->fd;
1281		1492
1282	if (ev_is_active (w))	1493	if (expect_false (ev_is_active (w)))
1283	return;	1494	return;
1284		1495
1285	assert (("ev_io_start called with negative fd", fd >= 0));	1496	assert (("ev_io_start called with negative fd", fd >= 0));
1286		1497
1287	ev_start (EV_A_ (W)w, 1);	1498	ev_start (EV_A_ (W)w, 1);
…		…
1290		1501
1291	fd_change (EV_A_ fd);	1502	fd_change (EV_A_ fd);
1292	}	1503	}
1293		1504
1294	void	1505	void
1295	ev_io_stop (EV_P_ struct ev_io *w)	1506	ev_io_stop (EV_P_ ev_io *w)
1296	{	1507	{
1297	ev_clear_pending (EV_A_ (W)w);	1508	ev_clear_pending (EV_A_ (W)w);
1298	if (!ev_is_active (w))	1509	if (expect_false (!ev_is_active (w)))
1299	return;	1510	return;
1300		1511
1301	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1512	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1302		1513
1303	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1514	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
…		…
1305		1516
1306	fd_change (EV_A_ w->fd);	1517	fd_change (EV_A_ w->fd);
1307	}	1518	}
1308		1519
1309	void	1520	void
1310	ev_timer_start (EV_P_ struct ev_timer *w)	1521	ev_timer_start (EV_P_ ev_timer *w)
1311	{	1522	{
1312	if (ev_is_active (w))	1523	if (expect_false (ev_is_active (w)))
1313	return;	1524	return;
1314		1525
1315	((WT)w)->at += mn_now;	1526	((WT)w)->at += mn_now;
1316		1527
1317	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1528	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1318		1529
1319	ev_start (EV_A_ (W)w, ++timercnt);	1530	ev_start (EV_A_ (W)w, ++timercnt);
1320	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1531	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1321	timers [timercnt - 1] = w;	1532	timers [timercnt - 1] = w;
1322	upheap ((WT *)timers, timercnt - 1);	1533	upheap ((WT *)timers, timercnt - 1);
1323		1534
		1535	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1536	}
		1537
		1538	void
		1539	ev_timer_stop (EV_P_ ev_timer *w)
		1540	{
		1541	ev_clear_pending (EV_A_ (W)w);
		1542	if (expect_false (!ev_is_active (w)))
		1543	return;
		1544
1324	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1545	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1325	}
1326		1546
1327	void	1547	{
1328	ev_timer_stop (EV_P_ struct ev_timer *w)	1548	int active = ((W)w)->active;
1329	{
1330	ev_clear_pending (EV_A_ (W)w);
1331	if (!ev_is_active (w))
1332	return;
1333		1549
1334	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1550	if (expect_true (--active < --timercnt))
1335
1336	if (((W)w)->active < timercnt--)
1337	{	1551	{
1338	timers [((W)w)->active - 1] = timers [timercnt];	1552	timers [active] = timers [timercnt];
1339	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1553	adjustheap ((WT *)timers, timercnt, active);
1340	}	1554	}
		1555	}
1341		1556
1342	((WT)w)->at -= mn_now;	1557	((WT)w)->at -= mn_now;
1343		1558
1344	ev_stop (EV_A_ (W)w);	1559	ev_stop (EV_A_ (W)w);
1345	}	1560	}
1346		1561
1347	void	1562	void
1348	ev_timer_again (EV_P_ struct ev_timer *w)	1563	ev_timer_again (EV_P_ ev_timer *w)
1349	{	1564	{
1350	if (ev_is_active (w))	1565	if (ev_is_active (w))
1351	{	1566	{
1352	if (w->repeat)	1567	if (w->repeat)
		1568	{
		1569	((WT)w)->at = mn_now + w->repeat;
1353	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1570	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
		1571	}
1354	else	1572	else
1355	ev_timer_stop (EV_A_ w);	1573	ev_timer_stop (EV_A_ w);
1356	}	1574	}
1357	else if (w->repeat)	1575	else if (w->repeat)
		1576	{
		1577	w->at = w->repeat;
1358	ev_timer_start (EV_A_ w);	1578	ev_timer_start (EV_A_ w);
		1579	}
1359	}	1580	}
1360		1581
		1582	#if EV_PERIODIC_ENABLE
1361	void	1583	void
1362	ev_periodic_start (EV_P_ struct ev_periodic *w)	1584	ev_periodic_start (EV_P_ ev_periodic *w)
1363	{	1585	{
1364	if (ev_is_active (w))	1586	if (expect_false (ev_is_active (w)))
1365	return;	1587	return;
1366		1588
1367	if (w->reschedule_cb)	1589	if (w->reschedule_cb)
1368	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1590	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1369	else if (w->interval)	1591	else if (w->interval)
…		…
1372	/* this formula differs from the one in periodic_reify because we do not always round up */	1594	/* this formula differs from the one in periodic_reify because we do not always round up */
1373	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1595	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1374	}	1596	}
1375		1597
1376	ev_start (EV_A_ (W)w, ++periodiccnt);	1598	ev_start (EV_A_ (W)w, ++periodiccnt);
1377	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1599	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1378	periodics [periodiccnt - 1] = w;	1600	periodics [periodiccnt - 1] = w;
1379	upheap ((WT *)periodics, periodiccnt - 1);	1601	upheap ((WT *)periodics, periodiccnt - 1);
1380		1602
		1603	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1604	}
		1605
		1606	void
		1607	ev_periodic_stop (EV_P_ ev_periodic *w)
		1608	{
		1609	ev_clear_pending (EV_A_ (W)w);
		1610	if (expect_false (!ev_is_active (w)))
		1611	return;
		1612
1381	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1613	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1382	}
1383		1614
1384	void	1615	{
1385	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1616	int active = ((W)w)->active;
1386	{
1387	ev_clear_pending (EV_A_ (W)w);
1388	if (!ev_is_active (w))
1389	return;
1390		1617
1391	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1618	if (expect_true (--active < --periodiccnt))
1392
1393	if (((W)w)->active < periodiccnt--)
1394	{	1619	{
1395	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1620	periodics [active] = periodics [periodiccnt];
1396	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1621	adjustheap ((WT *)periodics, periodiccnt, active);
1397	}	1622	}
		1623	}
1398		1624
1399	ev_stop (EV_A_ (W)w);	1625	ev_stop (EV_A_ (W)w);
1400	}	1626	}
1401		1627
1402	void	1628	void
1403	ev_periodic_again (EV_P_ struct ev_periodic *w)	1629	ev_periodic_again (EV_P_ ev_periodic *w)
1404	{	1630	{
1405	/* TODO: use adjustheap and recalculation */	1631	/* TODO: use adjustheap and recalculation */
1406	ev_periodic_stop (EV_A_ w);	1632	ev_periodic_stop (EV_A_ w);
1407	ev_periodic_start (EV_A_ w);	1633	ev_periodic_start (EV_A_ w);
1408	}	1634	}
1409		1635	#endif
1410	void
1411	ev_idle_start (EV_P_ struct ev_idle *w)
1412	{
1413	if (ev_is_active (w))
1414	return;
1415
1416	ev_start (EV_A_ (W)w, ++idlecnt);
1417	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1418	idles [idlecnt - 1] = w;
1419	}
1420
1421	void
1422	ev_idle_stop (EV_P_ struct ev_idle *w)
1423	{
1424	ev_clear_pending (EV_A_ (W)w);
1425	if (ev_is_active (w))
1426	return;
1427
1428	idles [((W)w)->active - 1] = idles [--idlecnt];
1429	ev_stop (EV_A_ (W)w);
1430	}
1431
1432	void
1433	ev_prepare_start (EV_P_ struct ev_prepare *w)
1434	{
1435	if (ev_is_active (w))
1436	return;
1437
1438	ev_start (EV_A_ (W)w, ++preparecnt);
1439	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1440	prepares [preparecnt - 1] = w;
1441	}
1442
1443	void
1444	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1445	{
1446	ev_clear_pending (EV_A_ (W)w);
1447	if (ev_is_active (w))
1448	return;
1449
1450	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1451	ev_stop (EV_A_ (W)w);
1452	}
1453
1454	void
1455	ev_check_start (EV_P_ struct ev_check *w)
1456	{
1457	if (ev_is_active (w))
1458	return;
1459
1460	ev_start (EV_A_ (W)w, ++checkcnt);
1461	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1462	checks [checkcnt - 1] = w;
1463	}
1464
1465	void
1466	ev_check_stop (EV_P_ struct ev_check *w)
1467	{
1468	ev_clear_pending (EV_A_ (W)w);
1469	if (ev_is_active (w))
1470	return;
1471
1472	checks [((W)w)->active - 1] = checks [--checkcnt];
1473	ev_stop (EV_A_ (W)w);
1474	}
1475		1636
1476	#ifndef SA_RESTART	1637	#ifndef SA_RESTART
1477	# define SA_RESTART 0	1638	# define SA_RESTART 0
1478	#endif	1639	#endif
1479		1640
1480	void	1641	void
1481	ev_signal_start (EV_P_ struct ev_signal *w)	1642	ev_signal_start (EV_P_ ev_signal *w)
1482	{	1643	{
1483	#if EV_MULTIPLICITY	1644	#if EV_MULTIPLICITY
1484	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1645	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1485	#endif	1646	#endif
1486	if (ev_is_active (w))	1647	if (expect_false (ev_is_active (w)))
1487	return;	1648	return;
1488		1649
1489	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1650	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1490		1651
1491	ev_start (EV_A_ (W)w, 1);	1652	ev_start (EV_A_ (W)w, 1);
1492	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1653	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1493	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1654	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1494		1655
1495	if (!((WL)w)->next)	1656	if (!((WL)w)->next)
1496	{	1657	{
1497	#if WIN32	1658	#if _WIN32
1498	signal (w->signum, sighandler);	1659	signal (w->signum, sighandler);
1499	#else	1660	#else
1500	struct sigaction sa;	1661	struct sigaction sa;
1501	sa.sa_handler = sighandler;	1662	sa.sa_handler = sighandler;
1502	sigfillset (&sa.sa_mask);	1663	sigfillset (&sa.sa_mask);
…		…
1505	#endif	1666	#endif
1506	}	1667	}
1507	}	1668	}
1508		1669
1509	void	1670	void
1510	ev_signal_stop (EV_P_ struct ev_signal *w)	1671	ev_signal_stop (EV_P_ ev_signal *w)
1511	{	1672	{
1512	ev_clear_pending (EV_A_ (W)w);	1673	ev_clear_pending (EV_A_ (W)w);
1513	if (!ev_is_active (w))	1674	if (expect_false (!ev_is_active (w)))
1514	return;	1675	return;
1515		1676
1516	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1677	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1517	ev_stop (EV_A_ (W)w);	1678	ev_stop (EV_A_ (W)w);
1518		1679
1519	if (!signals [w->signum - 1].head)	1680	if (!signals [w->signum - 1].head)
1520	signal (w->signum, SIG_DFL);	1681	signal (w->signum, SIG_DFL);
1521	}	1682	}
1522		1683
1523	void	1684	void
1524	ev_child_start (EV_P_ struct ev_child *w)	1685	ev_child_start (EV_P_ ev_child *w)
1525	{	1686	{
1526	#if EV_MULTIPLICITY	1687	#if EV_MULTIPLICITY
1527	assert (("child watchers are only supported in the default loop", loop == default_loop));	1688	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1528	#endif	1689	#endif
1529	if (ev_is_active (w))	1690	if (expect_false (ev_is_active (w)))
1530	return;	1691	return;
1531		1692
1532	ev_start (EV_A_ (W)w, 1);	1693	ev_start (EV_A_ (W)w, 1);
1533	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1694	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1534	}	1695	}
1535		1696
1536	void	1697	void
1537	ev_child_stop (EV_P_ struct ev_child *w)	1698	ev_child_stop (EV_P_ ev_child *w)
1538	{	1699	{
1539	ev_clear_pending (EV_A_ (W)w);	1700	ev_clear_pending (EV_A_ (W)w);
1540	if (ev_is_active (w))	1701	if (expect_false (!ev_is_active (w)))
1541	return;	1702	return;
1542		1703
1543	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1704	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1544	ev_stop (EV_A_ (W)w);	1705	ev_stop (EV_A_ (W)w);
1545	}	1706	}
1546		1707
		1708	#if EV_STAT_ENABLE
		1709
		1710	# ifdef _WIN32
		1711	# undef lstat
		1712	# define lstat(a,b) _stati64 (a,b)
		1713	# endif
		1714
		1715	#define DEF_STAT_INTERVAL 5.0074891
		1716	#define MIN_STAT_INTERVAL 0.1074891
		1717
		1718	void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1719
		1720	#if EV_USE_INOTIFY
		1721	# define EV_INOTIFY_BUFSIZE 8192
		1722
		1723	static void noinline
		1724	infy_add (EV_P_ ev_stat *w)
		1725	{
		1726	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);
		1727
		1728	if (w->wd < 0)
		1729	{
		1730	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1731
		1732	/* monitor some parent directory for speedup hints */
		1733	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1734	{
		1735	char path [4096];
		1736	strcpy (path, w->path);
		1737
		1738	do
		1739	{
		1740	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1741	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1742
		1743	char *pend = strrchr (path, '/');
		1744
		1745	if (!pend)
		1746	break; /* whoops, no '/', complain to your admin */
		1747
		1748	*pend = 0;
		1749	w->wd = inotify_add_watch (fs_fd, path, mask);
		1750	}
		1751	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1752	}
		1753	}
		1754	else
		1755	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1756
		1757	if (w->wd >= 0)
		1758	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1759	}
		1760
		1761	static void noinline
		1762	infy_del (EV_P_ ev_stat *w)
		1763	{
		1764	int slot;
		1765	int wd = w->wd;
		1766
		1767	if (wd < 0)
		1768	return;
		1769
		1770	w->wd = -2;
		1771	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1772	wlist_del (&fs_hash [slot].head, (WL)w);
		1773
		1774	/* remove this watcher, if others are watching it, they will rearm */
		1775	inotify_rm_watch (fs_fd, wd);
		1776	}
		1777
		1778	static void noinline
		1779	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1780	{
		1781	if (slot < 0)
		1782	/* overflow, need to check for all hahs slots */
		1783	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1784	infy_wd (EV_A_ slot, wd, ev);
		1785	else
		1786	{
		1787	WL w_;
		1788
		1789	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1790	{
		1791	ev_stat *w = (ev_stat *)w_;
		1792	w_ = w_->next; /* lets us remove this watcher and all before it */
		1793
		1794	if (w->wd == wd || wd == -1)
		1795	{
		1796	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1797	{
		1798	w->wd = -1;
		1799	infy_add (EV_A_ w); /* re-add, no matter what */
		1800	}
		1801
		1802	stat_timer_cb (EV_A_ &w->timer, 0);
		1803	}
		1804	}
		1805	}
		1806	}
		1807
		1808	static void
		1809	infy_cb (EV_P_ ev_io *w, int revents)
		1810	{
		1811	char buf [EV_INOTIFY_BUFSIZE];
		1812	struct inotify_event *ev = (struct inotify_event *)buf;
		1813	int ofs;
		1814	int len = read (fs_fd, buf, sizeof (buf));
		1815
		1816	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1817	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1818	}
		1819
		1820	void inline_size
		1821	infy_init (EV_P)
		1822	{
		1823	if (fs_fd != -2)
		1824	return;
		1825
		1826	fs_fd = inotify_init ();
		1827
		1828	if (fs_fd >= 0)
		1829	{
		1830	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1831	ev_set_priority (&fs_w, EV_MAXPRI);
		1832	ev_io_start (EV_A_ &fs_w);
		1833	}
		1834	}
		1835
		1836	#endif
		1837
		1838	void
		1839	ev_stat_stat (EV_P_ ev_stat *w)
		1840	{
		1841	if (lstat (w->path, &w->attr) < 0)
		1842	w->attr.st_nlink = 0;
		1843	else if (!w->attr.st_nlink)
		1844	w->attr.st_nlink = 1;
		1845	}
		1846
		1847	void noinline
		1848	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1849	{
		1850	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1851
		1852	/* we copy this here each the time so that */
		1853	/* prev has the old value when the callback gets invoked */
		1854	w->prev = w->attr;
		1855	ev_stat_stat (EV_A_ w);
		1856
		1857	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1858	{
		1859	#if EV_USE_INOTIFY
		1860	infy_del (EV_A_ w);
		1861	infy_add (EV_A_ w);
		1862	ev_stat_stat (EV_A_ w); /* avoid race... */
		1863	#endif
		1864
		1865	ev_feed_event (EV_A_ w, EV_STAT);
		1866	}
		1867	}
		1868
		1869	void
		1870	ev_stat_start (EV_P_ ev_stat *w)
		1871	{
		1872	if (expect_false (ev_is_active (w)))
		1873	return;
		1874
		1875	/* since we use memcmp, we need to clear any padding data etc. */
		1876	memset (&w->prev, 0, sizeof (ev_statdata));
		1877	memset (&w->attr, 0, sizeof (ev_statdata));
		1878
		1879	ev_stat_stat (EV_A_ w);
		1880
		1881	if (w->interval < MIN_STAT_INTERVAL)
		1882	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1883
		1884	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1885	ev_set_priority (&w->timer, ev_priority (w));
		1886
		1887	#if EV_USE_INOTIFY
		1888	infy_init (EV_A);
		1889
		1890	if (fs_fd >= 0)
		1891	infy_add (EV_A_ w);
		1892	else
		1893	#endif
		1894	ev_timer_start (EV_A_ &w->timer);
		1895
		1896	ev_start (EV_A_ (W)w, 1);
		1897	}
		1898
		1899	void
		1900	ev_stat_stop (EV_P_ ev_stat *w)
		1901	{
		1902	ev_clear_pending (EV_A_ (W)w);
		1903	if (expect_false (!ev_is_active (w)))
		1904	return;
		1905
		1906	#if EV_USE_INOTIFY
		1907	infy_del (EV_A_ w);
		1908	#endif
		1909	ev_timer_stop (EV_A_ &w->timer);
		1910
		1911	ev_stop (EV_A_ (W)w);
		1912	}
		1913	#endif
		1914
		1915	void
		1916	ev_idle_start (EV_P_ ev_idle *w)
		1917	{
		1918	if (expect_false (ev_is_active (w)))
		1919	return;
		1920
		1921	ev_start (EV_A_ (W)w, ++idlecnt);
		1922	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1923	idles [idlecnt - 1] = w;
		1924	}
		1925
		1926	void
		1927	ev_idle_stop (EV_P_ ev_idle *w)
		1928	{
		1929	ev_clear_pending (EV_A_ (W)w);
		1930	if (expect_false (!ev_is_active (w)))
		1931	return;
		1932
		1933	{
		1934	int active = ((W)w)->active;
		1935	idles [active - 1] = idles [--idlecnt];
		1936	((W)idles [active - 1])->active = active;
		1937	}
		1938
		1939	ev_stop (EV_A_ (W)w);
		1940	}
		1941
		1942	void
		1943	ev_prepare_start (EV_P_ ev_prepare *w)
		1944	{
		1945	if (expect_false (ev_is_active (w)))
		1946	return;
		1947
		1948	ev_start (EV_A_ (W)w, ++preparecnt);
		1949	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1950	prepares [preparecnt - 1] = w;
		1951	}
		1952
		1953	void
		1954	ev_prepare_stop (EV_P_ ev_prepare *w)
		1955	{
		1956	ev_clear_pending (EV_A_ (W)w);
		1957	if (expect_false (!ev_is_active (w)))
		1958	return;
		1959
		1960	{
		1961	int active = ((W)w)->active;
		1962	prepares [active - 1] = prepares [--preparecnt];
		1963	((W)prepares [active - 1])->active = active;
		1964	}
		1965
		1966	ev_stop (EV_A_ (W)w);
		1967	}
		1968
		1969	void
		1970	ev_check_start (EV_P_ ev_check *w)
		1971	{
		1972	if (expect_false (ev_is_active (w)))
		1973	return;
		1974
		1975	ev_start (EV_A_ (W)w, ++checkcnt);
		1976	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1977	checks [checkcnt - 1] = w;
		1978	}
		1979
		1980	void
		1981	ev_check_stop (EV_P_ ev_check *w)
		1982	{
		1983	ev_clear_pending (EV_A_ (W)w);
		1984	if (expect_false (!ev_is_active (w)))
		1985	return;
		1986
		1987	{
		1988	int active = ((W)w)->active;
		1989	checks [active - 1] = checks [--checkcnt];
		1990	((W)checks [active - 1])->active = active;
		1991	}
		1992
		1993	ev_stop (EV_A_ (W)w);
		1994	}
		1995
		1996	#if EV_EMBED_ENABLE
		1997	void noinline
		1998	ev_embed_sweep (EV_P_ ev_embed *w)
		1999	{
		2000	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2001	}
		2002
		2003	static void
		2004	embed_cb (EV_P_ ev_io *io, int revents)
		2005	{
		2006	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2007
		2008	if (ev_cb (w))
		2009	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2010	else
		2011	ev_embed_sweep (loop, w);
		2012	}
		2013
		2014	void
		2015	ev_embed_start (EV_P_ ev_embed *w)
		2016	{
		2017	if (expect_false (ev_is_active (w)))
		2018	return;
		2019
		2020	{
		2021	struct ev_loop *loop = w->loop;
		2022	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2023	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2024	}
		2025
		2026	ev_set_priority (&w->io, ev_priority (w));
		2027	ev_io_start (EV_A_ &w->io);
		2028
		2029	ev_start (EV_A_ (W)w, 1);
		2030	}
		2031
		2032	void
		2033	ev_embed_stop (EV_P_ ev_embed *w)
		2034	{
		2035	ev_clear_pending (EV_A_ (W)w);
		2036	if (expect_false (!ev_is_active (w)))
		2037	return;
		2038
		2039	ev_io_stop (EV_A_ &w->io);
		2040
		2041	ev_stop (EV_A_ (W)w);
		2042	}
		2043	#endif
		2044
		2045	#if EV_FORK_ENABLE
		2046	void
		2047	ev_fork_start (EV_P_ ev_fork *w)
		2048	{
		2049	if (expect_false (ev_is_active (w)))
		2050	return;
		2051
		2052	ev_start (EV_A_ (W)w, ++forkcnt);
		2053	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2054	forks [forkcnt - 1] = w;
		2055	}
		2056
		2057	void
		2058	ev_fork_stop (EV_P_ ev_fork *w)
		2059	{
		2060	ev_clear_pending (EV_A_ (W)w);
		2061	if (expect_false (!ev_is_active (w)))
		2062	return;
		2063
		2064	{
		2065	int active = ((W)w)->active;
		2066	forks [active - 1] = forks [--forkcnt];
		2067	((W)forks [active - 1])->active = active;
		2068	}
		2069
		2070	ev_stop (EV_A_ (W)w);
		2071	}
		2072	#endif
		2073
1547	/*****************************************************************************/	2074	/*****************************************************************************/
1548		2075
1549	struct ev_once	2076	struct ev_once
1550	{	2077	{
1551	struct ev_io io;	2078	ev_io io;
1552	struct ev_timer to;	2079	ev_timer to;
1553	void (*cb)(int revents, void *arg);	2080	void (*cb)(int revents, void *arg);
1554	void *arg;	2081	void *arg;
1555	};	2082	};
1556		2083
1557	static void	2084	static void
…		…
1566		2093
1567	cb (revents, arg);	2094	cb (revents, arg);
1568	}	2095	}
1569		2096
1570	static void	2097	static void
1571	once_cb_io (EV_P_ struct ev_io *w, int revents)	2098	once_cb_io (EV_P_ ev_io *w, int revents)
1572	{	2099	{
1573	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2100	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1574	}	2101	}
1575		2102
1576	static void	2103	static void
1577	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2104	once_cb_to (EV_P_ ev_timer *w, int revents)
1578	{	2105	{
1579	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2106	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1580	}	2107	}
1581		2108
1582	void	2109	void
1583	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2110	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1584	{	2111	{
1585	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	2112	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1586		2113
1587	if (!once)	2114	if (expect_false (!once))
		2115	{
1588	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2116	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1589	else	2117	return;
1590	{	2118	}
		2119
1591	once->cb = cb;	2120	once->cb = cb;
1592	once->arg = arg;	2121	once->arg = arg;
1593		2122
1594	ev_init (&once->io, once_cb_io);	2123	ev_init (&once->io, once_cb_io);
1595	if (fd >= 0)	2124	if (fd >= 0)
1596	{	2125	{
1597	ev_io_set (&once->io, fd, events);	2126	ev_io_set (&once->io, fd, events);
1598	ev_io_start (EV_A_ &once->io);	2127	ev_io_start (EV_A_ &once->io);
1599	}	2128	}
1600		2129
1601	ev_init (&once->to, once_cb_to);	2130	ev_init (&once->to, once_cb_to);
1602	if (timeout >= 0.)	2131	if (timeout >= 0.)
1603	{	2132	{
1604	ev_timer_set (&once->to, timeout, 0.);	2133	ev_timer_set (&once->to, timeout, 0.);
1605	ev_timer_start (EV_A_ &once->to);	2134	ev_timer_start (EV_A_ &once->to);
1606	}
1607	}	2135	}
1608	}	2136	}
1609		2137
1610	#ifdef __cplusplus	2138	#ifdef __cplusplus
1611	}	2139	}

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