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Comparing libev/ev.c (file contents):
Revision 1.91 by root, Sun Nov 11 00:06:48 2007 UTC vs.
Revision 1.148 by root, Tue Nov 27 11:11:13 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
58	# endif	97	# endif
59		98
60	#endif	99	#endif
61		100
62	#include <math.h>	101	#include <math.h>
…		…
71	#include <sys/types.h>	110	#include <sys/types.h>
72	#include <time.h>	111	#include <time.h>
73		112
74	#include <signal.h>	113	#include <signal.h>
75		114
76	#ifndef WIN32	115	#ifndef _WIN32
77	# include <unistd.h>
78	# include <sys/time.h>	116	# include <sys/time.h>
79	# include <sys/wait.h>	117	# include <sys/wait.h>
		118	# include <unistd.h>
		119	#else
		120	# define WIN32_LEAN_AND_MEAN
		121	# include <windows.h>
		122	# ifndef EV_SELECT_IS_WINSOCKET
		123	# define EV_SELECT_IS_WINSOCKET 1
80	#endif	124	# endif
		125	#endif
		126
81	/**/	127	/**/
82		128
83	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
84	# define EV_USE_MONOTONIC 1	130	# define EV_USE_MONOTONIC 0
		131	#endif
		132
		133	#ifndef EV_USE_REALTIME
		134	# define EV_USE_REALTIME 0
85	#endif	135	#endif
86		136
87	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
88	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
89	#endif	139	#endif
90		140
91	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
92	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	142	# ifdef _WIN32
		143	# define EV_USE_POLL 0
		144	# else
		145	# define EV_USE_POLL 1
		146	# endif
93	#endif	147	#endif
94		148
95	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
96	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
97	#endif	151	#endif
98		152
99	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
100	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
101	#endif	155	#endif
102		156
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	157	#ifndef EV_USE_PORT
114	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
115	#endif	159	#endif
116		160
117	/**/	161	/**/
118		162
119	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
124	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
125	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
126	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
127	#endif	171	#endif
128		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
129	/**/	177	/**/
130		178
131	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	179	#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) */	180	#define MAX_BLOCKTIME 59.743 /* 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 */	181	#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 */	182	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
135		183
136	#ifdef EV_H	184	#ifdef EV_H
137	# include EV_H	185	# include EV_H
138	#else	186	#else
139	# include "ev.h"	187	# include "ev.h"
140	#endif	188	#endif
141		189
142	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
143	# define expect(expr,value) __builtin_expect ((expr),(value))	191	# define expect(expr,value) __builtin_expect ((expr),(value))
		192	# define inline_size static inline /* inline for codesize */
		193	# if EV_MINIMAL
144	# define inline inline	194	# define noinline __attribute__ ((noinline))
		195	# define inline_speed static noinline
		196	# else
		197	# define noinline
		198	# define inline_speed static inline
		199	# endif
145	#else	200	#else
146	# define expect(expr,value) (expr)	201	# define expect(expr,value) (expr)
		202	# define inline_speed static
147	# define inline static	203	# define inline_size static
		204	# define noinline
148	#endif	205	#endif
149		206
150	#define expect_false(expr) expect ((expr) != 0, 0)	207	#define expect_false(expr) expect ((expr) != 0, 0)
151	#define expect_true(expr) expect ((expr) != 0, 1)	208	#define expect_true(expr) expect ((expr) != 0, 1)
152		209
153	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
154	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
155		212
		213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		214	#define EMPTY2(a,b) /* used to suppress some warnings */
		215
156	typedef struct ev_watcher *W;	216	typedef ev_watcher *W;
157	typedef struct ev_watcher_list *WL;	217	typedef ev_watcher_list *WL;
158	typedef struct ev_watcher_time *WT;	218	typedef ev_watcher_time *WT;
159		219
160	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
161		221
		222	#ifdef _WIN32
162	#include "ev_win32.c"	223	# include "ev_win32.c"
		224	#endif
163		225
164	/*****************************************************************************/	226	/*****************************************************************************/
165		227
166	static void (*syserr_cb)(const char *msg);	228	static void (*syserr_cb)(const char *msg);
167		229
		230	void
168	void ev_set_syserr_cb (void (*cb)(const char *msg))	231	ev_set_syserr_cb (void (*cb)(const char *msg))
169	{	232	{
170	syserr_cb = cb;	233	syserr_cb = cb;
171	}	234	}
172		235
173	static void	236	static void noinline
174	syserr (const char *msg)	237	syserr (const char *msg)
175	{	238	{
176	if (!msg)	239	if (!msg)
177	msg = "(libev) system error";	240	msg = "(libev) system error";
178		241
…		…
185	}	248	}
186	}	249	}
187		250
188	static void *(*alloc)(void *ptr, long size);	251	static void *(*alloc)(void *ptr, long size);
189		252
		253	void
190	void ev_set_allocator (void *(*cb)(void *ptr, long size))	254	ev_set_allocator (void *(*cb)(void *ptr, long size))
191	{	255	{
192	alloc = cb;	256	alloc = cb;
193	}	257	}
194		258
195	static void *	259	static void *
…		…
214	typedef struct	278	typedef struct
215	{	279	{
216	WL head;	280	WL head;
217	unsigned char events;	281	unsigned char events;
218	unsigned char reify;	282	unsigned char reify;
		283	#if EV_SELECT_IS_WINSOCKET
		284	SOCKET handle;
		285	#endif
219	} ANFD;	286	} ANFD;
220		287
221	typedef struct	288	typedef struct
222	{	289	{
223	W w;	290	W w;
…		…
227	#if EV_MULTIPLICITY	294	#if EV_MULTIPLICITY
228		295
229	struct ev_loop	296	struct ev_loop
230	{	297	{
231	ev_tstamp ev_rt_now;	298	ev_tstamp ev_rt_now;
		299	#define ev_rt_now ((loop)->ev_rt_now)
232	#define VAR(name,decl) decl;	300	#define VAR(name,decl) decl;
233	#include "ev_vars.h"	301	#include "ev_vars.h"
234	#undef VAR	302	#undef VAR
235	};	303	};
236	#include "ev_wrap.h"	304	#include "ev_wrap.h"
237		305
238	struct ev_loop default_loop_struct;	306	static struct ev_loop default_loop_struct;
239	static struct ev_loop *default_loop;	307	struct ev_loop *ev_default_loop_ptr;
240		308
241	#else	309	#else
242		310
243	ev_tstamp ev_rt_now;	311	ev_tstamp ev_rt_now;
244	#define VAR(name,decl) static decl;	312	#define VAR(name,decl) static decl;
245	#include "ev_vars.h"	313	#include "ev_vars.h"
246	#undef VAR	314	#undef VAR
247		315
248	static int default_loop;	316	static int ev_default_loop_ptr;
249		317
250	#endif	318	#endif
251		319
252	/*****************************************************************************/	320	/*****************************************************************************/
253		321
254	inline ev_tstamp	322	ev_tstamp
255	ev_time (void)	323	ev_time (void)
256	{	324	{
257	#if EV_USE_REALTIME	325	#if EV_USE_REALTIME
258	struct timespec ts;	326	struct timespec ts;
259	clock_gettime (CLOCK_REALTIME, &ts);	327	clock_gettime (CLOCK_REALTIME, &ts);
…		…
263	gettimeofday (&tv, 0);	331	gettimeofday (&tv, 0);
264	return tv.tv_sec + tv.tv_usec * 1e-6;	332	return tv.tv_sec + tv.tv_usec * 1e-6;
265	#endif	333	#endif
266	}	334	}
267		335
268	inline ev_tstamp	336	ev_tstamp inline_size
269	get_clock (void)	337	get_clock (void)
270	{	338	{
271	#if EV_USE_MONOTONIC	339	#if EV_USE_MONOTONIC
272	if (expect_true (have_monotonic))	340	if (expect_true (have_monotonic))
273	{	341	{
…		…
286	{	354	{
287	return ev_rt_now;	355	return ev_rt_now;
288	}	356	}
289	#endif	357	#endif
290		358
291	#define array_roundsize(type,n) ((n) | 4 & ~3)	359	#define array_roundsize(type,n) (((n) | 4) & ~3)
292		360
293	#define array_needsize(type,base,cur,cnt,init) \	361	#define array_needsize(type,base,cur,cnt,init) \
294	if (expect_false ((cnt) > cur)) \	362	if (expect_false ((cnt) > cur)) \
295	{ \	363	{ \
296	int newcnt = cur; \	364	int newcnt = cur; \
…		…
311	stem ## max = array_roundsize (stem ## cnt >> 1); \	379	stem ## max = array_roundsize (stem ## cnt >> 1); \
312	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	380	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
313	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	381	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
314	}	382	}
315		383
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) \	384	#define array_free(stem, idx) \
322	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	385	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
323		386
324	/*****************************************************************************/	387	/*****************************************************************************/
325		388
326	static void	389	void noinline
		390	ev_feed_event (EV_P_ void *w, int revents)
		391	{
		392	W w_ = (W)w;
		393
		394	if (expect_false (w_->pending))
		395	{
		396	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		397	return;
		398	}
		399
		400	w_->pending = ++pendingcnt [ABSPRI (w_)];
		401	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		402	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		403	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		404	}
		405
		406	void inline_size
		407	queue_events (EV_P_ W *events, int eventcnt, int type)
		408	{
		409	int i;
		410
		411	for (i = 0; i < eventcnt; ++i)
		412	ev_feed_event (EV_A_ events [i], type);
		413	}
		414
		415	/*****************************************************************************/
		416
		417	void inline_size
327	anfds_init (ANFD *base, int count)	418	anfds_init (ANFD *base, int count)
328	{	419	{
329	while (count--)	420	while (count--)
330	{	421	{
331	base->head = 0;	422	base->head = 0;
…		…
334		425
335	++base;	426	++base;
336	}	427	}
337	}	428	}
338		429
339	void	430	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)	431	fd_event (EV_P_ int fd, int revents)
367	{	432	{
368	ANFD *anfd = anfds + fd;	433	ANFD *anfd = anfds + fd;
369	struct ev_io *w;	434	ev_io *w;
370		435
371	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	436	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
372	{	437	{
373	int ev = w->events & revents;	438	int ev = w->events & revents;
374		439
375	if (ev)	440	if (ev)
376	ev_feed_event (EV_A_ (W)w, ev);	441	ev_feed_event (EV_A_ (W)w, ev);
…		…
381	ev_feed_fd_event (EV_P_ int fd, int revents)	446	ev_feed_fd_event (EV_P_ int fd, int revents)
382	{	447	{
383	fd_event (EV_A_ fd, revents);	448	fd_event (EV_A_ fd, revents);
384	}	449	}
385		450
386	/*****************************************************************************/	451	void inline_size
387
388	static void
389	fd_reify (EV_P)	452	fd_reify (EV_P)
390	{	453	{
391	int i;	454	int i;
392		455
393	for (i = 0; i < fdchangecnt; ++i)	456	for (i = 0; i < fdchangecnt; ++i)
394	{	457	{
395	int fd = fdchanges [i];	458	int fd = fdchanges [i];
396	ANFD *anfd = anfds + fd;	459	ANFD *anfd = anfds + fd;
397	struct ev_io *w;	460	ev_io *w;
398		461
399	int events = 0;	462	int events = 0;
400		463
401	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	464	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
402	events |= w->events;	465	events |= w->events;
403		466
		467	#if EV_SELECT_IS_WINSOCKET
		468	if (events)
		469	{
		470	unsigned long argp;
		471	anfd->handle = _get_osfhandle (fd);
		472	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		473	}
		474	#endif
		475
404	anfd->reify = 0;	476	anfd->reify = 0;
405		477
406	method_modify (EV_A_ fd, anfd->events, events);	478	backend_modify (EV_A_ fd, anfd->events, events);
407	anfd->events = events;	479	anfd->events = events;
408	}	480	}
409		481
410	fdchangecnt = 0;	482	fdchangecnt = 0;
411	}	483	}
412		484
413	static void	485	void inline_size
414	fd_change (EV_P_ int fd)	486	fd_change (EV_P_ int fd)
415	{	487	{
416	if (anfds [fd].reify)	488	if (expect_false (anfds [fd].reify))
417	return;	489	return;
418		490
419	anfds [fd].reify = 1;	491	anfds [fd].reify = 1;
420		492
421	++fdchangecnt;	493	++fdchangecnt;
422	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	494	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
423	fdchanges [fdchangecnt - 1] = fd;	495	fdchanges [fdchangecnt - 1] = fd;
424	}	496	}
425		497
426	static void	498	void inline_speed
427	fd_kill (EV_P_ int fd)	499	fd_kill (EV_P_ int fd)
428	{	500	{
429	struct ev_io *w;	501	ev_io *w;
430		502
431	while ((w = (struct ev_io *)anfds [fd].head))	503	while ((w = (ev_io *)anfds [fd].head))
432	{	504	{
433	ev_io_stop (EV_A_ w);	505	ev_io_stop (EV_A_ w);
434	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	506	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
435	}	507	}
436	}	508	}
437		509
438	static int	510	int inline_size
439	fd_valid (int fd)	511	fd_valid (int fd)
440	{	512	{
441	#ifdef WIN32	513	#ifdef _WIN32
442	return !!win32_get_osfhandle (fd);	514	return _get_osfhandle (fd) != -1;
443	#else	515	#else
444	return fcntl (fd, F_GETFD) != -1;	516	return fcntl (fd, F_GETFD) != -1;
445	#endif	517	#endif
446	}	518	}
447		519
448	/* called on EBADF to verify fds */	520	/* called on EBADF to verify fds */
449	static void	521	static void noinline
450	fd_ebadf (EV_P)	522	fd_ebadf (EV_P)
451	{	523	{
452	int fd;	524	int fd;
453		525
454	for (fd = 0; fd < anfdmax; ++fd)	526	for (fd = 0; fd < anfdmax; ++fd)
…		…
456	if (!fd_valid (fd) == -1 && errno == EBADF)	528	if (!fd_valid (fd) == -1 && errno == EBADF)
457	fd_kill (EV_A_ fd);	529	fd_kill (EV_A_ fd);
458	}	530	}
459		531
460	/* called on ENOMEM in select/poll to kill some fds and retry */	532	/* called on ENOMEM in select/poll to kill some fds and retry */
461	static void	533	static void noinline
462	fd_enomem (EV_P)	534	fd_enomem (EV_P)
463	{	535	{
464	int fd;	536	int fd;
465		537
466	for (fd = anfdmax; fd--; )	538	for (fd = anfdmax; fd--; )
…		…
469	fd_kill (EV_A_ fd);	541	fd_kill (EV_A_ fd);
470	return;	542	return;
471	}	543	}
472	}	544	}
473		545
474	/* usually called after fork if method needs to re-arm all fds from scratch */	546	/* usually called after fork if backend needs to re-arm all fds from scratch */
475	static void	547	static void noinline
476	fd_rearm_all (EV_P)	548	fd_rearm_all (EV_P)
477	{	549	{
478	int fd;	550	int fd;
479		551
480	/* this should be highly optimised to not do anything but set a flag */	552	/* this should be highly optimised to not do anything but set a flag */
…		…
486	}	558	}
487	}	559	}
488		560
489	/*****************************************************************************/	561	/*****************************************************************************/
490		562
491	static void	563	void inline_speed
492	upheap (WT *heap, int k)	564	upheap (WT *heap, int k)
493	{	565	{
494	WT w = heap [k];	566	WT w = heap [k];
495		567
496	while (k && heap [k >> 1]->at > w->at)	568	while (k && heap [k >> 1]->at > w->at)
…		…
503	heap [k] = w;	575	heap [k] = w;
504	((W)heap [k])->active = k + 1;	576	((W)heap [k])->active = k + 1;
505		577
506	}	578	}
507		579
508	static void	580	void inline_speed
509	downheap (WT *heap, int N, int k)	581	downheap (WT *heap, int N, int k)
510	{	582	{
511	WT w = heap [k];	583	WT w = heap [k];
512		584
513	while (k < (N >> 1))	585	while (k < (N >> 1))
…		…
527		599
528	heap [k] = w;	600	heap [k] = w;
529	((W)heap [k])->active = k + 1;	601	((W)heap [k])->active = k + 1;
530	}	602	}
531		603
532	inline void	604	void inline_size
533	adjustheap (WT *heap, int N, int k, ev_tstamp at)	605	adjustheap (WT *heap, int N, int k)
534	{	606	{
535	ev_tstamp old_at = heap [k]->at;	607	upheap (heap, k);
536	heap [k]->at = at;
537
538	if (old_at < at)
539	downheap (heap, N, k);	608	downheap (heap, N, k);
540	else
541	upheap (heap, k);
542	}	609	}
543		610
544	/*****************************************************************************/	611	/*****************************************************************************/
545		612
546	typedef struct	613	typedef struct
…		…
552	static ANSIG *signals;	619	static ANSIG *signals;
553	static int signalmax;	620	static int signalmax;
554		621
555	static int sigpipe [2];	622	static int sigpipe [2];
556	static sig_atomic_t volatile gotsig;	623	static sig_atomic_t volatile gotsig;
557	static struct ev_io sigev;	624	static ev_io sigev;
558		625
559	static void	626	void inline_size
560	signals_init (ANSIG *base, int count)	627	signals_init (ANSIG *base, int count)
561	{	628	{
562	while (count--)	629	while (count--)
563	{	630	{
564	base->head = 0;	631	base->head = 0;
…		…
569	}	636	}
570		637
571	static void	638	static void
572	sighandler (int signum)	639	sighandler (int signum)
573	{	640	{
574	#if WIN32	641	#if _WIN32
575	signal (signum, sighandler);	642	signal (signum, sighandler);
576	#endif	643	#endif
577		644
578	signals [signum - 1].gotsig = 1;	645	signals [signum - 1].gotsig = 1;
579		646
580	if (!gotsig)	647	if (!gotsig)
581	{	648	{
582	int old_errno = errno;	649	int old_errno = errno;
583	gotsig = 1;	650	gotsig = 1;
584	#ifdef WIN32
585	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
586	#else
587	write (sigpipe [1], &signum, 1);	651	write (sigpipe [1], &signum, 1);
588	#endif
589	errno = old_errno;	652	errno = old_errno;
590	}	653	}
591	}	654	}
592		655
593	void	656	void noinline
594	ev_feed_signal_event (EV_P_ int signum)	657	ev_feed_signal_event (EV_P_ int signum)
595	{	658	{
596	WL w;	659	WL w;
597		660
598	#if EV_MULTIPLICITY	661	#if EV_MULTIPLICITY
599	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	662	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
600	#endif	663	#endif
601		664
602	--signum;	665	--signum;
603		666
604	if (signum < 0 || signum >= signalmax)	667	if (signum < 0 || signum >= signalmax)
…		…
609	for (w = signals [signum].head; w; w = w->next)	672	for (w = signals [signum].head; w; w = w->next)
610	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	673	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
611	}	674	}
612		675
613	static void	676	static void
614	sigcb (EV_P_ struct ev_io *iow, int revents)	677	sigcb (EV_P_ ev_io *iow, int revents)
615	{	678	{
616	int signum;	679	int signum;
617		680
618	#ifdef WIN32
619	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
620	#else
621	read (sigpipe [0], &revents, 1);	681	read (sigpipe [0], &revents, 1);
622	#endif
623	gotsig = 0;	682	gotsig = 0;
624		683
625	for (signum = signalmax; signum--; )	684	for (signum = signalmax; signum--; )
626	if (signals [signum].gotsig)	685	if (signals [signum].gotsig)
627	ev_feed_signal_event (EV_A_ signum + 1);	686	ev_feed_signal_event (EV_A_ signum + 1);
628	}	687	}
629		688
630	static void	689	void inline_size
		690	fd_intern (int fd)
		691	{
		692	#ifdef _WIN32
		693	int arg = 1;
		694	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		695	#else
		696	fcntl (fd, F_SETFD, FD_CLOEXEC);
		697	fcntl (fd, F_SETFL, O_NONBLOCK);
		698	#endif
		699	}
		700
		701	static void noinline
631	siginit (EV_P)	702	siginit (EV_P)
632	{	703	{
633	#ifndef WIN32	704	fd_intern (sigpipe [0]);
634	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	705	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		706
642	ev_io_set (&sigev, sigpipe [0], EV_READ);	707	ev_io_set (&sigev, sigpipe [0], EV_READ);
643	ev_io_start (EV_A_ &sigev);	708	ev_io_start (EV_A_ &sigev);
644	ev_unref (EV_A); /* child watcher should not keep loop alive */	709	ev_unref (EV_A); /* child watcher should not keep loop alive */
645	}	710	}
646		711
647	/*****************************************************************************/	712	/*****************************************************************************/
648		713
649	static struct ev_child *childs [PID_HASHSIZE];	714	static ev_child *childs [PID_HASHSIZE];
650		715
651	#ifndef WIN32	716	#ifndef _WIN32
652		717
653	static struct ev_signal childev;	718	static ev_signal childev;
654		719
655	#ifndef WCONTINUED	720	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)	721	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
661	{	722	{
662	struct ev_child *w;	723	ev_child *w;
663		724
664	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	725	for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
665	if (w->pid == pid || !w->pid)	726	if (w->pid == pid || !w->pid)
666	{	727	{
667	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	728	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
668	w->rpid = pid;	729	w->rpid = pid;
669	w->rstatus = status;	730	w->rstatus = status;
670	ev_feed_event (EV_A_ (W)w, EV_CHILD);	731	ev_feed_event (EV_A_ (W)w, EV_CHILD);
671	}	732	}
672	}	733	}
673		734
		735	#ifndef WCONTINUED
		736	# define WCONTINUED 0
		737	#endif
		738
674	static void	739	static void
675	childcb (EV_P_ struct ev_signal *sw, int revents)	740	childcb (EV_P_ ev_signal *sw, int revents)
676	{	741	{
677	int pid, status;	742	int pid, status;
678		743
		744	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
679	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	745	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
680	{	746	if (!WCONTINUED
		747	|| errno != EINVAL
		748	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		749	return;
		750
681	/* make sure we are called again until all childs have been reaped */	751	/* make sure we are called again until all childs have been reaped */
		752	/* 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);	753	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
683		754
684	child_reap (EV_A_ sw, pid, pid, status);	755	child_reap (EV_A_ sw, pid, pid, status);
685	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	756	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
686	}
687	}	757	}
688		758
689	#endif	759	#endif
690		760
691	/*****************************************************************************/	761	/*****************************************************************************/
692		762
		763	#if EV_USE_PORT
		764	# include "ev_port.c"
		765	#endif
693	#if EV_USE_KQUEUE	766	#if EV_USE_KQUEUE
694	# include "ev_kqueue.c"	767	# include "ev_kqueue.c"
695	#endif	768	#endif
696	#if EV_USE_EPOLL	769	#if EV_USE_EPOLL
697	# include "ev_epoll.c"	770	# include "ev_epoll.c"
…		…
714	{	787	{
715	return EV_VERSION_MINOR;	788	return EV_VERSION_MINOR;
716	}	789	}
717		790
718	/* return true if we are running with elevated privileges and should ignore env variables */	791	/* return true if we are running with elevated privileges and should ignore env variables */
719	static int	792	int inline_size
720	enable_secure (void)	793	enable_secure (void)
721	{	794	{
722	#ifdef WIN32	795	#ifdef _WIN32
723	return 0;	796	return 0;
724	#else	797	#else
725	return getuid () != geteuid ()	798	return getuid () != geteuid ()
726	|| getgid () != getegid ();	799	|| getgid () != getegid ();
727	#endif	800	#endif
728	}	801	}
729		802
730	int	803	unsigned int
731	ev_method (EV_P)	804	ev_supported_backends (void)
732	{	805	{
733	return method;	806	unsigned int flags = 0;
		807
		808	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		809	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		810	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		811	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		812	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		813
		814	return flags;
		815	}
		816
		817	unsigned int
		818	ev_recommended_backends (void)
		819	{
		820	unsigned int flags = ev_supported_backends ();
		821
		822	#ifndef __NetBSD__
		823	/* kqueue is borked on everything but netbsd apparently */
		824	/* it usually doesn't work correctly on anything but sockets and pipes */
		825	flags &= ~EVBACKEND_KQUEUE;
		826	#endif
		827	#ifdef __APPLE__
		828	// flags &= ~EVBACKEND_KQUEUE; for documentation
		829	flags &= ~EVBACKEND_POLL;
		830	#endif
		831
		832	return flags;
		833	}
		834
		835	unsigned int
		836	ev_embeddable_backends (void)
		837	{
		838	return EVBACKEND_EPOLL
		839	| EVBACKEND_KQUEUE
		840	| EVBACKEND_PORT;
		841	}
		842
		843	unsigned int
		844	ev_backend (EV_P)
		845	{
		846	return backend;
734	}	847	}
735		848
736	static void	849	static void
737	loop_init (EV_P_ int methods)	850	loop_init (EV_P_ unsigned int flags)
738	{	851	{
739	if (!method)	852	if (!backend)
740	{	853	{
741	#if EV_USE_MONOTONIC	854	#if EV_USE_MONOTONIC
742	{	855	{
743	struct timespec ts;	856	struct timespec ts;
744	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	857	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
749	ev_rt_now = ev_time ();	862	ev_rt_now = ev_time ();
750	mn_now = get_clock ();	863	mn_now = get_clock ();
751	now_floor = mn_now;	864	now_floor = mn_now;
752	rtmn_diff = ev_rt_now - mn_now;	865	rtmn_diff = ev_rt_now - mn_now;
753		866
754	if (methods == EVMETHOD_AUTO)	867	if (!(flags & EVFLAG_NOENV)
755	if (!enable_secure () && getenv ("LIBEV_METHODS"))	868	&& !enable_secure ()
		869	&& getenv ("LIBEV_FLAGS"))
756	methods = atoi (getenv ("LIBEV_METHODS"));	870	flags = atoi (getenv ("LIBEV_FLAGS"));
757	else
758	methods = EVMETHOD_ANY;
759		871
760	method = 0;	872	if (!(flags & 0x0000ffffUL))
761	#if EV_USE_WIN32	873	flags |= ev_recommended_backends ();
762	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	874
		875	backend = 0;
		876	#if EV_USE_PORT
		877	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
763	#endif	878	#endif
764	#if EV_USE_KQUEUE	879	#if EV_USE_KQUEUE
765	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	880	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
766	#endif	881	#endif
767	#if EV_USE_EPOLL	882	#if EV_USE_EPOLL
768	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	883	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
769	#endif	884	#endif
770	#if EV_USE_POLL	885	#if EV_USE_POLL
771	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	886	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
772	#endif	887	#endif
773	#if EV_USE_SELECT	888	#if EV_USE_SELECT
774	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	889	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
775	#endif	890	#endif
776		891
777	ev_init (&sigev, sigcb);	892	ev_init (&sigev, sigcb);
778	ev_set_priority (&sigev, EV_MAXPRI);	893	ev_set_priority (&sigev, EV_MAXPRI);
779	}	894	}
780	}	895	}
781		896
782	void	897	static void
783	loop_destroy (EV_P)	898	loop_destroy (EV_P)
784	{	899	{
785	int i;	900	int i;
786		901
787	#if EV_USE_WIN32	902	#if EV_USE_PORT
788	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	903	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
789	#endif	904	#endif
790	#if EV_USE_KQUEUE	905	#if EV_USE_KQUEUE
791	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	906	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
792	#endif	907	#endif
793	#if EV_USE_EPOLL	908	#if EV_USE_EPOLL
794	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	909	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
795	#endif	910	#endif
796	#if EV_USE_POLL	911	#if EV_USE_POLL
797	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	912	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
798	#endif	913	#endif
799	#if EV_USE_SELECT	914	#if EV_USE_SELECT
800	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	915	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
801	#endif	916	#endif
802		917
803	for (i = NUMPRI; i--; )	918	for (i = NUMPRI; i--; )
804	array_free (pending, [i]);	919	array_free (pending, [i]);
805		920
806	/* have to use the microsoft-never-gets-it-right macro */	921	/* have to use the microsoft-never-gets-it-right macro */
807	array_free_microshit (fdchange);	922	array_free (fdchange, EMPTY0);
808	array_free_microshit (timer);	923	array_free (timer, EMPTY0);
809	array_free_microshit (periodic);	924	#if EV_PERIODIC_ENABLE
810	array_free_microshit (idle);	925	array_free (periodic, EMPTY0);
811	array_free_microshit (prepare);	926	#endif
812	array_free_microshit (check);	927	array_free (idle, EMPTY0);
		928	array_free (prepare, EMPTY0);
		929	array_free (check, EMPTY0);
813		930
814	method = 0;	931	backend = 0;
815	}	932	}
816		933
817	static void	934	static void
818	loop_fork (EV_P)	935	loop_fork (EV_P)
819	{	936	{
		937	#if EV_USE_PORT
		938	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		939	#endif
		940	#if EV_USE_KQUEUE
		941	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		942	#endif
820	#if EV_USE_EPOLL	943	#if EV_USE_EPOLL
821	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	944	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	945	#endif
826		946
827	if (ev_is_active (&sigev))	947	if (ev_is_active (&sigev))
828	{	948	{
829	/* default loop */	949	/* default loop */
…		…
842	postfork = 0;	962	postfork = 0;
843	}	963	}
844		964
845	#if EV_MULTIPLICITY	965	#if EV_MULTIPLICITY
846	struct ev_loop *	966	struct ev_loop *
847	ev_loop_new (int methods)	967	ev_loop_new (unsigned int flags)
848	{	968	{
849	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	969	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
850		970
851	memset (loop, 0, sizeof (struct ev_loop));	971	memset (loop, 0, sizeof (struct ev_loop));
852		972
853	loop_init (EV_A_ methods);	973	loop_init (EV_A_ flags);
854		974
855	if (ev_method (EV_A))	975	if (ev_backend (EV_A))
856	return loop;	976	return loop;
857		977
858	return 0;	978	return 0;
859	}	979	}
860		980
…		…
873		993
874	#endif	994	#endif
875		995
876	#if EV_MULTIPLICITY	996	#if EV_MULTIPLICITY
877	struct ev_loop *	997	struct ev_loop *
		998	ev_default_loop_init (unsigned int flags)
878	#else	999	#else
879	int	1000	int
		1001	ev_default_loop (unsigned int flags)
880	#endif	1002	#endif
881	ev_default_loop (int methods)
882	{	1003	{
883	if (sigpipe [0] == sigpipe [1])	1004	if (sigpipe [0] == sigpipe [1])
884	if (pipe (sigpipe))	1005	if (pipe (sigpipe))
885	return 0;	1006	return 0;
886		1007
887	if (!default_loop)	1008	if (!ev_default_loop_ptr)
888	{	1009	{
889	#if EV_MULTIPLICITY	1010	#if EV_MULTIPLICITY
890	struct ev_loop *loop = default_loop = &default_loop_struct;	1011	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
891	#else	1012	#else
892	default_loop = 1;	1013	ev_default_loop_ptr = 1;
893	#endif	1014	#endif
894		1015
895	loop_init (EV_A_ methods);	1016	loop_init (EV_A_ flags);
896		1017
897	if (ev_method (EV_A))	1018	if (ev_backend (EV_A))
898	{	1019	{
899	siginit (EV_A);	1020	siginit (EV_A);
900		1021
901	#ifndef WIN32	1022	#ifndef _WIN32
902	ev_signal_init (&childev, childcb, SIGCHLD);	1023	ev_signal_init (&childev, childcb, SIGCHLD);
903	ev_set_priority (&childev, EV_MAXPRI);	1024	ev_set_priority (&childev, EV_MAXPRI);
904	ev_signal_start (EV_A_ &childev);	1025	ev_signal_start (EV_A_ &childev);
905	ev_unref (EV_A); /* child watcher should not keep loop alive */	1026	ev_unref (EV_A); /* child watcher should not keep loop alive */
906	#endif	1027	#endif
907	}	1028	}
908	else	1029	else
909	default_loop = 0;	1030	ev_default_loop_ptr = 0;
910	}	1031	}
911		1032
912	return default_loop;	1033	return ev_default_loop_ptr;
913	}	1034	}
914		1035
915	void	1036	void
916	ev_default_destroy (void)	1037	ev_default_destroy (void)
917	{	1038	{
918	#if EV_MULTIPLICITY	1039	#if EV_MULTIPLICITY
919	struct ev_loop *loop = default_loop;	1040	struct ev_loop *loop = ev_default_loop_ptr;
920	#endif	1041	#endif
921		1042
922	#ifndef WIN32	1043	#ifndef _WIN32
923	ev_ref (EV_A); /* child watcher */	1044	ev_ref (EV_A); /* child watcher */
924	ev_signal_stop (EV_A_ &childev);	1045	ev_signal_stop (EV_A_ &childev);
925	#endif	1046	#endif
926		1047
927	ev_ref (EV_A); /* signal watcher */	1048	ev_ref (EV_A); /* signal watcher */
…		…
935		1056
936	void	1057	void
937	ev_default_fork (void)	1058	ev_default_fork (void)
938	{	1059	{
939	#if EV_MULTIPLICITY	1060	#if EV_MULTIPLICITY
940	struct ev_loop *loop = default_loop;	1061	struct ev_loop *loop = ev_default_loop_ptr;
941	#endif	1062	#endif
942		1063
943	if (method)	1064	if (backend)
944	postfork = 1;	1065	postfork = 1;
945	}	1066	}
946		1067
947	/*****************************************************************************/	1068	/*****************************************************************************/
948		1069
949	static int	1070	int inline_size
950	any_pending (EV_P)	1071	any_pending (EV_P)
951	{	1072	{
952	int pri;	1073	int pri;
953		1074
954	for (pri = NUMPRI; pri--; )	1075	for (pri = NUMPRI; pri--; )
…		…
956	return 1;	1077	return 1;
957		1078
958	return 0;	1079	return 0;
959	}	1080	}
960		1081
961	static void	1082	void inline_speed
962	call_pending (EV_P)	1083	call_pending (EV_P)
963	{	1084	{
964	int pri;	1085	int pri;
965		1086
966	for (pri = NUMPRI; pri--; )	1087	for (pri = NUMPRI; pri--; )
967	while (pendingcnt [pri])	1088	while (pendingcnt [pri])
968	{	1089	{
969	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1090	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
970		1091
971	if (p->w)	1092	if (expect_true (p->w))
972	{	1093	{
		1094	assert (("non-pending watcher on pending list", p->w->pending));
		1095
973	p->w->pending = 0;	1096	p->w->pending = 0;
974	EV_CB_INVOKE (p->w, p->events);	1097	EV_CB_INVOKE (p->w, p->events);
975	}	1098	}
976	}	1099	}
977	}	1100	}
978		1101
979	static void	1102	void inline_size
980	timers_reify (EV_P)	1103	timers_reify (EV_P)
981	{	1104	{
982	while (timercnt && ((WT)timers [0])->at <= mn_now)	1105	while (timercnt && ((WT)timers [0])->at <= mn_now)
983	{	1106	{
984	struct ev_timer *w = timers [0];	1107	ev_timer *w = timers [0];
985		1108
986	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1109	assert (("inactive timer on timer heap detected", ev_is_active (w)));
987		1110
988	/* first reschedule or stop timer */	1111	/* first reschedule or stop timer */
989	if (w->repeat)	1112	if (w->repeat)
…		…
1001		1124
1002	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1125	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1003	}	1126	}
1004	}	1127	}
1005		1128
1006	static void	1129	#if EV_PERIODIC_ENABLE
		1130	void inline_size
1007	periodics_reify (EV_P)	1131	periodics_reify (EV_P)
1008	{	1132	{
1009	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1133	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1010	{	1134	{
1011	struct ev_periodic *w = periodics [0];	1135	ev_periodic *w = periodics [0];
1012		1136
1013	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1137	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1014		1138
1015	/* first reschedule or stop timer */	1139	/* first reschedule or stop timer */
1016	if (w->reschedule_cb)	1140	if (w->reschedule_cb)
1017	{	1141	{
1018	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1142	((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));	1143	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1021	downheap ((WT *)periodics, periodiccnt, 0);	1144	downheap ((WT *)periodics, periodiccnt, 0);
1022	}	1145	}
1023	else if (w->interval)	1146	else if (w->interval)
1024	{	1147	{
…		…
1031		1154
1032	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1155	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1033	}	1156	}
1034	}	1157	}
1035		1158
1036	static void	1159	static void noinline
1037	periodics_reschedule (EV_P)	1160	periodics_reschedule (EV_P)
1038	{	1161	{
1039	int i;	1162	int i;
1040		1163
1041	/* adjust periodics after time jump */	1164	/* adjust periodics after time jump */
1042	for (i = 0; i < periodiccnt; ++i)	1165	for (i = 0; i < periodiccnt; ++i)
1043	{	1166	{
1044	struct ev_periodic *w = periodics [i];	1167	ev_periodic *w = periodics [i];
1045		1168
1046	if (w->reschedule_cb)	1169	if (w->reschedule_cb)
1047	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1170	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1048	else if (w->interval)	1171	else if (w->interval)
1049	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1172	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
…		…
1051		1174
1052	/* now rebuild the heap */	1175	/* now rebuild the heap */
1053	for (i = periodiccnt >> 1; i--; )	1176	for (i = periodiccnt >> 1; i--; )
1054	downheap ((WT *)periodics, periodiccnt, i);	1177	downheap ((WT *)periodics, periodiccnt, i);
1055	}	1178	}
		1179	#endif
1056		1180
1057	inline int	1181	int inline_size
1058	time_update_monotonic (EV_P)	1182	time_update_monotonic (EV_P)
1059	{	1183	{
1060	mn_now = get_clock ();	1184	mn_now = get_clock ();
1061		1185
1062	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1186	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
…		…
1070	ev_rt_now = ev_time ();	1194	ev_rt_now = ev_time ();
1071	return 1;	1195	return 1;
1072	}	1196	}
1073	}	1197	}
1074		1198
1075	static void	1199	void inline_size
1076	time_update (EV_P)	1200	time_update (EV_P)
1077	{	1201	{
1078	int i;	1202	int i;
1079		1203
1080	#if EV_USE_MONOTONIC	1204	#if EV_USE_MONOTONIC
…		…
1082	{	1206	{
1083	if (time_update_monotonic (EV_A))	1207	if (time_update_monotonic (EV_A))
1084	{	1208	{
1085	ev_tstamp odiff = rtmn_diff;	1209	ev_tstamp odiff = rtmn_diff;
1086		1210
1087	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1211	/* loop a few times, before making important decisions.
		1212	* on the choice of "4": one iteration isn't enough,
		1213	* in case we get preempted during the calls to
		1214	* ev_time and get_clock. a second call is almost guarenteed
		1215	* to succeed in that case, though. and looping a few more times
		1216	* doesn't hurt either as we only do this on time-jumps or
		1217	* in the unlikely event of getting preempted here.
		1218	*/
		1219	for (i = 4; --i; )
1088	{	1220	{
1089	rtmn_diff = ev_rt_now - mn_now;	1221	rtmn_diff = ev_rt_now - mn_now;
1090		1222
1091	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1223	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1092	return; /* all is well */	1224	return; /* all is well */
…		…
1094	ev_rt_now = ev_time ();	1226	ev_rt_now = ev_time ();
1095	mn_now = get_clock ();	1227	mn_now = get_clock ();
1096	now_floor = mn_now;	1228	now_floor = mn_now;
1097	}	1229	}
1098		1230
		1231	# if EV_PERIODIC_ENABLE
1099	periodics_reschedule (EV_A);	1232	periodics_reschedule (EV_A);
		1233	# endif
1100	/* no timer adjustment, as the monotonic clock doesn't jump */	1234	/* no timer adjustment, as the monotonic clock doesn't jump */
1101	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1235	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1102	}	1236	}
1103	}	1237	}
1104	else	1238	else
…		…
1106	{	1240	{
1107	ev_rt_now = ev_time ();	1241	ev_rt_now = ev_time ();
1108		1242
1109	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1243	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1110	{	1244	{
		1245	#if EV_PERIODIC_ENABLE
1111	periodics_reschedule (EV_A);	1246	periodics_reschedule (EV_A);
		1247	#endif
1112		1248
1113	/* adjust timers. this is easy, as the offset is the same for all */	1249	/* adjust timers. this is easy, as the offset is the same for all */
1114	for (i = 0; i < timercnt; ++i)	1250	for (i = 0; i < timercnt; ++i)
1115	((WT)timers [i])->at += ev_rt_now - mn_now;	1251	((WT)timers [i])->at += ev_rt_now - mn_now;
1116	}	1252	}
…		…
1134	static int loop_done;	1270	static int loop_done;
1135		1271
1136	void	1272	void
1137	ev_loop (EV_P_ int flags)	1273	ev_loop (EV_P_ int flags)
1138	{	1274	{
1139	double block;
1140	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1275	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1276	? EVUNLOOP_ONE
		1277	: EVUNLOOP_CANCEL;
1141		1278
1142	do	1279	while (activecnt)
1143	{	1280	{
		1281	/* we might have forked, so reify kernel state if necessary */
		1282	#if EV_FORK_ENABLE
		1283	if (expect_false (postfork))
		1284	if (forkcnt)
		1285	{
		1286	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1287	call_pending (EV_A);
		1288	}
		1289	#endif
		1290
1144	/* queue check watchers (and execute them) */	1291	/* queue check watchers (and execute them) */
1145	if (expect_false (preparecnt))	1292	if (expect_false (preparecnt))
1146	{	1293	{
1147	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1294	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1148	call_pending (EV_A);	1295	call_pending (EV_A);
…		…
1154		1301
1155	/* update fd-related kernel structures */	1302	/* update fd-related kernel structures */
1156	fd_reify (EV_A);	1303	fd_reify (EV_A);
1157		1304
1158	/* calculate blocking time */	1305	/* calculate blocking time */
		1306	{
		1307	double block;
1159		1308
1160	/* we only need this for !monotonic clock or timers, but as we basically	1309	if (flags & EVLOOP_NONBLOCK || idlecnt)
1161	always have timers, we just calculate it always */	1310	block = 0.; /* do not block at all */
		1311	else
		1312	{
		1313	/* update time to cancel out callback processing overhead */
1162	#if EV_USE_MONOTONIC	1314	#if EV_USE_MONOTONIC
1163	if (expect_true (have_monotonic))	1315	if (expect_true (have_monotonic))
1164	time_update_monotonic (EV_A);	1316	time_update_monotonic (EV_A);
1165	else	1317	else
1166	#endif	1318	#endif
1167	{	1319	{
1168	ev_rt_now = ev_time ();	1320	ev_rt_now = ev_time ();
1169	mn_now = ev_rt_now;	1321	mn_now = ev_rt_now;
1170	}	1322	}
1171		1323
1172	if (flags & EVLOOP_NONBLOCK || idlecnt)
1173	block = 0.;
1174	else
1175	{
1176	block = MAX_BLOCKTIME;	1324	block = MAX_BLOCKTIME;
1177		1325
1178	if (timercnt)	1326	if (timercnt)
1179	{	1327	{
1180	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1328	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1181	if (block > to) block = to;	1329	if (block > to) block = to;
1182	}	1330	}
1183		1331
		1332	#if EV_PERIODIC_ENABLE
1184	if (periodiccnt)	1333	if (periodiccnt)
1185	{	1334	{
1186	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1335	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1187	if (block > to) block = to;	1336	if (block > to) block = to;
1188	}	1337	}
		1338	#endif
1189		1339
1190	if (block < 0.) block = 0.;	1340	if (expect_false (block < 0.)) block = 0.;
1191	}	1341	}
1192		1342
1193	method_poll (EV_A_ block);	1343	backend_poll (EV_A_ block);
		1344	}
1194		1345
1195	/* update ev_rt_now, do magic */	1346	/* update ev_rt_now, do magic */
1196	time_update (EV_A);	1347	time_update (EV_A);
1197		1348
1198	/* queue pending timers and reschedule them */	1349	/* queue pending timers and reschedule them */
1199	timers_reify (EV_A); /* relative timers called last */	1350	timers_reify (EV_A); /* relative timers called last */
		1351	#if EV_PERIODIC_ENABLE
1200	periodics_reify (EV_A); /* absolute timers called first */	1352	periodics_reify (EV_A); /* absolute timers called first */
		1353	#endif
1201		1354
1202	/* queue idle watchers unless io or timers are pending */	1355	/* queue idle watchers unless other events are pending */
1203	if (idlecnt && !any_pending (EV_A))	1356	if (idlecnt && !any_pending (EV_A))
1204	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1357	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1205		1358
1206	/* queue check watchers, to be executed first */	1359	/* queue check watchers, to be executed first */
1207	if (checkcnt)	1360	if (expect_false (checkcnt))
1208	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1361	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1209		1362
1210	call_pending (EV_A);	1363	call_pending (EV_A);
1211	}
1212	while (activecnt && !loop_done);
1213		1364
1214	if (loop_done != 2)	1365	if (expect_false (loop_done))
1215	loop_done = 0;	1366	break;
		1367	}
		1368
		1369	if (loop_done == EVUNLOOP_ONE)
		1370	loop_done = EVUNLOOP_CANCEL;
1216	}	1371	}
1217		1372
1218	void	1373	void
1219	ev_unloop (EV_P_ int how)	1374	ev_unloop (EV_P_ int how)
1220	{	1375	{
1221	loop_done = how;	1376	loop_done = how;
1222	}	1377	}
1223		1378
1224	/*****************************************************************************/	1379	/*****************************************************************************/
1225		1380
1226	inline void	1381	void inline_size
1227	wlist_add (WL *head, WL elem)	1382	wlist_add (WL *head, WL elem)
1228	{	1383	{
1229	elem->next = *head;	1384	elem->next = *head;
1230	*head = elem;	1385	*head = elem;
1231	}	1386	}
1232		1387
1233	inline void	1388	void inline_size
1234	wlist_del (WL *head, WL elem)	1389	wlist_del (WL *head, WL elem)
1235	{	1390	{
1236	while (*head)	1391	while (*head)
1237	{	1392	{
1238	if (*head == elem)	1393	if (*head == elem)
…		…
1243		1398
1244	head = &(*head)->next;	1399	head = &(*head)->next;
1245	}	1400	}
1246	}	1401	}
1247		1402
1248	inline void	1403	void inline_speed
1249	ev_clear_pending (EV_P_ W w)	1404	ev_clear_pending (EV_P_ W w)
1250	{	1405	{
1251	if (w->pending)	1406	if (w->pending)
1252	{	1407	{
1253	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1408	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1254	w->pending = 0;	1409	w->pending = 0;
1255	}	1410	}
1256	}	1411	}
1257		1412
1258	inline void	1413	void inline_speed
1259	ev_start (EV_P_ W w, int active)	1414	ev_start (EV_P_ W w, int active)
1260	{	1415	{
1261	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1416	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1262	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1417	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1263		1418
1264	w->active = active;	1419	w->active = active;
1265	ev_ref (EV_A);	1420	ev_ref (EV_A);
1266	}	1421	}
1267		1422
1268	inline void	1423	void inline_size
1269	ev_stop (EV_P_ W w)	1424	ev_stop (EV_P_ W w)
1270	{	1425	{
1271	ev_unref (EV_A);	1426	ev_unref (EV_A);
1272	w->active = 0;	1427	w->active = 0;
1273	}	1428	}
1274		1429
1275	/*****************************************************************************/	1430	/*****************************************************************************/
1276		1431
1277	void	1432	void
1278	ev_io_start (EV_P_ struct ev_io *w)	1433	ev_io_start (EV_P_ ev_io *w)
1279	{	1434	{
1280	int fd = w->fd;	1435	int fd = w->fd;
1281		1436
1282	if (ev_is_active (w))	1437	if (expect_false (ev_is_active (w)))
1283	return;	1438	return;
1284		1439
1285	assert (("ev_io_start called with negative fd", fd >= 0));	1440	assert (("ev_io_start called with negative fd", fd >= 0));
1286		1441
1287	ev_start (EV_A_ (W)w, 1);	1442	ev_start (EV_A_ (W)w, 1);
…		…
1290		1445
1291	fd_change (EV_A_ fd);	1446	fd_change (EV_A_ fd);
1292	}	1447	}
1293		1448
1294	void	1449	void
1295	ev_io_stop (EV_P_ struct ev_io *w)	1450	ev_io_stop (EV_P_ ev_io *w)
1296	{	1451	{
1297	ev_clear_pending (EV_A_ (W)w);	1452	ev_clear_pending (EV_A_ (W)w);
1298	if (!ev_is_active (w))	1453	if (expect_false (!ev_is_active (w)))
1299	return;	1454	return;
1300		1455
1301	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1456	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1302		1457
1303	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1458	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
…		…
1305		1460
1306	fd_change (EV_A_ w->fd);	1461	fd_change (EV_A_ w->fd);
1307	}	1462	}
1308		1463
1309	void	1464	void
1310	ev_timer_start (EV_P_ struct ev_timer *w)	1465	ev_timer_start (EV_P_ ev_timer *w)
1311	{	1466	{
1312	if (ev_is_active (w))	1467	if (expect_false (ev_is_active (w)))
1313	return;	1468	return;
1314		1469
1315	((WT)w)->at += mn_now;	1470	((WT)w)->at += mn_now;
1316		1471
1317	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1472	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1318		1473
1319	ev_start (EV_A_ (W)w, ++timercnt);	1474	ev_start (EV_A_ (W)w, ++timercnt);
1320	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1475	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1321	timers [timercnt - 1] = w;	1476	timers [timercnt - 1] = w;
1322	upheap ((WT *)timers, timercnt - 1);	1477	upheap ((WT *)timers, timercnt - 1);
1323		1478
1324	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1479	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1325	}	1480	}
1326		1481
1327	void	1482	void
1328	ev_timer_stop (EV_P_ struct ev_timer *w)	1483	ev_timer_stop (EV_P_ ev_timer *w)
1329	{	1484	{
1330	ev_clear_pending (EV_A_ (W)w);	1485	ev_clear_pending (EV_A_ (W)w);
1331	if (!ev_is_active (w))	1486	if (expect_false (!ev_is_active (w)))
1332	return;	1487	return;
1333		1488
1334	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1489	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1335		1490
1336	if (((W)w)->active < timercnt--)	1491	if (expect_true (((W)w)->active < timercnt--))
1337	{	1492	{
1338	timers [((W)w)->active - 1] = timers [timercnt];	1493	timers [((W)w)->active - 1] = timers [timercnt];
1339	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1494	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1340	}	1495	}
1341		1496
1342	((WT)w)->at -= mn_now;	1497	((WT)w)->at -= mn_now;
1343		1498
1344	ev_stop (EV_A_ (W)w);	1499	ev_stop (EV_A_ (W)w);
1345	}	1500	}
1346		1501
1347	void	1502	void
1348	ev_timer_again (EV_P_ struct ev_timer *w)	1503	ev_timer_again (EV_P_ ev_timer *w)
1349	{	1504	{
1350	if (ev_is_active (w))	1505	if (ev_is_active (w))
1351	{	1506	{
1352	if (w->repeat)	1507	if (w->repeat)
		1508	{
		1509	((WT)w)->at = mn_now + w->repeat;
1353	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1510	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
		1511	}
1354	else	1512	else
1355	ev_timer_stop (EV_A_ w);	1513	ev_timer_stop (EV_A_ w);
1356	}	1514	}
1357	else if (w->repeat)	1515	else if (w->repeat)
		1516	{
		1517	w->at = w->repeat;
1358	ev_timer_start (EV_A_ w);	1518	ev_timer_start (EV_A_ w);
		1519	}
1359	}	1520	}
1360		1521
		1522	#if EV_PERIODIC_ENABLE
1361	void	1523	void
1362	ev_periodic_start (EV_P_ struct ev_periodic *w)	1524	ev_periodic_start (EV_P_ ev_periodic *w)
1363	{	1525	{
1364	if (ev_is_active (w))	1526	if (expect_false (ev_is_active (w)))
1365	return;	1527	return;
1366		1528
1367	if (w->reschedule_cb)	1529	if (w->reschedule_cb)
1368	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1530	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1369	else if (w->interval)	1531	else if (w->interval)
…		…
1372	/* this formula differs from the one in periodic_reify because we do not always round up */	1534	/* 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;	1535	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1374	}	1536	}
1375		1537
1376	ev_start (EV_A_ (W)w, ++periodiccnt);	1538	ev_start (EV_A_ (W)w, ++periodiccnt);
1377	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1539	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1378	periodics [periodiccnt - 1] = w;	1540	periodics [periodiccnt - 1] = w;
1379	upheap ((WT *)periodics, periodiccnt - 1);	1541	upheap ((WT *)periodics, periodiccnt - 1);
1380		1542
1381	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1543	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1382	}	1544	}
1383		1545
1384	void	1546	void
1385	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1547	ev_periodic_stop (EV_P_ ev_periodic *w)
1386	{	1548	{
1387	ev_clear_pending (EV_A_ (W)w);	1549	ev_clear_pending (EV_A_ (W)w);
1388	if (!ev_is_active (w))	1550	if (expect_false (!ev_is_active (w)))
1389	return;	1551	return;
1390		1552
1391	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1553	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1392		1554
1393	if (((W)w)->active < periodiccnt--)	1555	if (expect_true (((W)w)->active < periodiccnt--))
1394	{	1556	{
1395	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1557	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1396	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1558	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1397	}	1559	}
1398		1560
1399	ev_stop (EV_A_ (W)w);	1561	ev_stop (EV_A_ (W)w);
1400	}	1562	}
1401		1563
1402	void	1564	void
1403	ev_periodic_again (EV_P_ struct ev_periodic *w)	1565	ev_periodic_again (EV_P_ ev_periodic *w)
1404	{	1566	{
1405	/* TODO: use adjustheap and recalculation */	1567	/* TODO: use adjustheap and recalculation */
1406	ev_periodic_stop (EV_A_ w);	1568	ev_periodic_stop (EV_A_ w);
1407	ev_periodic_start (EV_A_ w);	1569	ev_periodic_start (EV_A_ w);
1408	}	1570	}
1409		1571	#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		1572
1476	#ifndef SA_RESTART	1573	#ifndef SA_RESTART
1477	# define SA_RESTART 0	1574	# define SA_RESTART 0
1478	#endif	1575	#endif
1479		1576
1480	void	1577	void
1481	ev_signal_start (EV_P_ struct ev_signal *w)	1578	ev_signal_start (EV_P_ ev_signal *w)
1482	{	1579	{
1483	#if EV_MULTIPLICITY	1580	#if EV_MULTIPLICITY
1484	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1581	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1485	#endif	1582	#endif
1486	if (ev_is_active (w))	1583	if (expect_false (ev_is_active (w)))
1487	return;	1584	return;
1488		1585
1489	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1586	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1490		1587
1491	ev_start (EV_A_ (W)w, 1);	1588	ev_start (EV_A_ (W)w, 1);
1492	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1589	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1493	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1590	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1494		1591
1495	if (!((WL)w)->next)	1592	if (!((WL)w)->next)
1496	{	1593	{
1497	#if WIN32	1594	#if _WIN32
1498	signal (w->signum, sighandler);	1595	signal (w->signum, sighandler);
1499	#else	1596	#else
1500	struct sigaction sa;	1597	struct sigaction sa;
1501	sa.sa_handler = sighandler;	1598	sa.sa_handler = sighandler;
1502	sigfillset (&sa.sa_mask);	1599	sigfillset (&sa.sa_mask);
…		…
1505	#endif	1602	#endif
1506	}	1603	}
1507	}	1604	}
1508		1605
1509	void	1606	void
1510	ev_signal_stop (EV_P_ struct ev_signal *w)	1607	ev_signal_stop (EV_P_ ev_signal *w)
1511	{	1608	{
1512	ev_clear_pending (EV_A_ (W)w);	1609	ev_clear_pending (EV_A_ (W)w);
1513	if (!ev_is_active (w))	1610	if (expect_false (!ev_is_active (w)))
1514	return;	1611	return;
1515		1612
1516	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1613	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1517	ev_stop (EV_A_ (W)w);	1614	ev_stop (EV_A_ (W)w);
1518		1615
1519	if (!signals [w->signum - 1].head)	1616	if (!signals [w->signum - 1].head)
1520	signal (w->signum, SIG_DFL);	1617	signal (w->signum, SIG_DFL);
1521	}	1618	}
1522		1619
1523	void	1620	void
1524	ev_child_start (EV_P_ struct ev_child *w)	1621	ev_child_start (EV_P_ ev_child *w)
1525	{	1622	{
1526	#if EV_MULTIPLICITY	1623	#if EV_MULTIPLICITY
1527	assert (("child watchers are only supported in the default loop", loop == default_loop));	1624	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1528	#endif	1625	#endif
1529	if (ev_is_active (w))	1626	if (expect_false (ev_is_active (w)))
1530	return;	1627	return;
1531		1628
1532	ev_start (EV_A_ (W)w, 1);	1629	ev_start (EV_A_ (W)w, 1);
1533	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1630	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1534	}	1631	}
1535		1632
1536	void	1633	void
1537	ev_child_stop (EV_P_ struct ev_child *w)	1634	ev_child_stop (EV_P_ ev_child *w)
1538	{	1635	{
1539	ev_clear_pending (EV_A_ (W)w);	1636	ev_clear_pending (EV_A_ (W)w);
1540	if (ev_is_active (w))	1637	if (expect_false (!ev_is_active (w)))
1541	return;	1638	return;
1542		1639
1543	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1640	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1544	ev_stop (EV_A_ (W)w);	1641	ev_stop (EV_A_ (W)w);
1545	}	1642	}
1546		1643
		1644	#if EV_STAT_ENABLE
		1645
		1646	# ifdef _WIN32
		1647	# undef lstat
		1648	# define lstat(a,b) _stati64 (a,b)
		1649	# endif
		1650
		1651	#define DEF_STAT_INTERVAL 5.0074891
		1652	#define MIN_STAT_INTERVAL 0.1074891
		1653
		1654	void
		1655	ev_stat_stat (EV_P_ ev_stat *w)
		1656	{
		1657	if (lstat (w->path, &w->attr) < 0)
		1658	w->attr.st_nlink = 0;
		1659	else if (!w->attr.st_nlink)
		1660	w->attr.st_nlink = 1;
		1661	}
		1662
		1663	static void
		1664	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1665	{
		1666	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1667
		1668	/* we copy this here each the time so that */
		1669	/* prev has the old value when the callback gets invoked */
		1670	w->prev = w->attr;
		1671	ev_stat_stat (EV_A_ w);
		1672
		1673	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1674	ev_feed_event (EV_A_ w, EV_STAT);
		1675	}
		1676
		1677	void
		1678	ev_stat_start (EV_P_ ev_stat *w)
		1679	{
		1680	if (expect_false (ev_is_active (w)))
		1681	return;
		1682
		1683	/* since we use memcmp, we need to clear any padding data etc. */
		1684	memset (&w->prev, 0, sizeof (ev_statdata));
		1685	memset (&w->attr, 0, sizeof (ev_statdata));
		1686
		1687	ev_stat_stat (EV_A_ w);
		1688
		1689	if (w->interval < MIN_STAT_INTERVAL)
		1690	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1691
		1692	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1693	ev_set_priority (&w->timer, ev_priority (w));
		1694	ev_timer_start (EV_A_ &w->timer);
		1695
		1696	ev_start (EV_A_ (W)w, 1);
		1697	}
		1698
		1699	void
		1700	ev_stat_stop (EV_P_ ev_stat *w)
		1701	{
		1702	ev_clear_pending (EV_A_ (W)w);
		1703	if (expect_false (!ev_is_active (w)))
		1704	return;
		1705
		1706	ev_timer_stop (EV_A_ &w->timer);
		1707
		1708	ev_stop (EV_A_ (W)w);
		1709	}
		1710	#endif
		1711
		1712	void
		1713	ev_idle_start (EV_P_ ev_idle *w)
		1714	{
		1715	if (expect_false (ev_is_active (w)))
		1716	return;
		1717
		1718	ev_start (EV_A_ (W)w, ++idlecnt);
		1719	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1720	idles [idlecnt - 1] = w;
		1721	}
		1722
		1723	void
		1724	ev_idle_stop (EV_P_ ev_idle *w)
		1725	{
		1726	ev_clear_pending (EV_A_ (W)w);
		1727	if (expect_false (!ev_is_active (w)))
		1728	return;
		1729
		1730	{
		1731	int active = ((W)w)->active;
		1732	idles [active - 1] = idles [--idlecnt];
		1733	((W)idles [active - 1])->active = active;
		1734	}
		1735
		1736	ev_stop (EV_A_ (W)w);
		1737	}
		1738
		1739	void
		1740	ev_prepare_start (EV_P_ ev_prepare *w)
		1741	{
		1742	if (expect_false (ev_is_active (w)))
		1743	return;
		1744
		1745	ev_start (EV_A_ (W)w, ++preparecnt);
		1746	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1747	prepares [preparecnt - 1] = w;
		1748	}
		1749
		1750	void
		1751	ev_prepare_stop (EV_P_ ev_prepare *w)
		1752	{
		1753	ev_clear_pending (EV_A_ (W)w);
		1754	if (expect_false (!ev_is_active (w)))
		1755	return;
		1756
		1757	{
		1758	int active = ((W)w)->active;
		1759	prepares [active - 1] = prepares [--preparecnt];
		1760	((W)prepares [active - 1])->active = active;
		1761	}
		1762
		1763	ev_stop (EV_A_ (W)w);
		1764	}
		1765
		1766	void
		1767	ev_check_start (EV_P_ ev_check *w)
		1768	{
		1769	if (expect_false (ev_is_active (w)))
		1770	return;
		1771
		1772	ev_start (EV_A_ (W)w, ++checkcnt);
		1773	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1774	checks [checkcnt - 1] = w;
		1775	}
		1776
		1777	void
		1778	ev_check_stop (EV_P_ ev_check *w)
		1779	{
		1780	ev_clear_pending (EV_A_ (W)w);
		1781	if (expect_false (!ev_is_active (w)))
		1782	return;
		1783
		1784	{
		1785	int active = ((W)w)->active;
		1786	checks [active - 1] = checks [--checkcnt];
		1787	((W)checks [active - 1])->active = active;
		1788	}
		1789
		1790	ev_stop (EV_A_ (W)w);
		1791	}
		1792
		1793	#if EV_EMBED_ENABLE
		1794	void noinline
		1795	ev_embed_sweep (EV_P_ ev_embed *w)
		1796	{
		1797	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1798	}
		1799
		1800	static void
		1801	embed_cb (EV_P_ ev_io *io, int revents)
		1802	{
		1803	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		1804
		1805	if (ev_cb (w))
		1806	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1807	else
		1808	ev_embed_sweep (loop, w);
		1809	}
		1810
		1811	void
		1812	ev_embed_start (EV_P_ ev_embed *w)
		1813	{
		1814	if (expect_false (ev_is_active (w)))
		1815	return;
		1816
		1817	{
		1818	struct ev_loop *loop = w->loop;
		1819	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1820	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1821	}
		1822
		1823	ev_set_priority (&w->io, ev_priority (w));
		1824	ev_io_start (EV_A_ &w->io);
		1825
		1826	ev_start (EV_A_ (W)w, 1);
		1827	}
		1828
		1829	void
		1830	ev_embed_stop (EV_P_ ev_embed *w)
		1831	{
		1832	ev_clear_pending (EV_A_ (W)w);
		1833	if (expect_false (!ev_is_active (w)))
		1834	return;
		1835
		1836	ev_io_stop (EV_A_ &w->io);
		1837
		1838	ev_stop (EV_A_ (W)w);
		1839	}
		1840	#endif
		1841
		1842	#if EV_FORK_ENABLE
		1843	void
		1844	ev_fork_start (EV_P_ ev_fork *w)
		1845	{
		1846	if (expect_false (ev_is_active (w)))
		1847	return;
		1848
		1849	ev_start (EV_A_ (W)w, ++forkcnt);
		1850	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		1851	forks [forkcnt - 1] = w;
		1852	}
		1853
		1854	void
		1855	ev_fork_stop (EV_P_ ev_fork *w)
		1856	{
		1857	ev_clear_pending (EV_A_ (W)w);
		1858	if (expect_false (!ev_is_active (w)))
		1859	return;
		1860
		1861	{
		1862	int active = ((W)w)->active;
		1863	forks [active - 1] = forks [--forkcnt];
		1864	((W)forks [active - 1])->active = active;
		1865	}
		1866
		1867	ev_stop (EV_A_ (W)w);
		1868	}
		1869	#endif
		1870
1547	/*****************************************************************************/	1871	/*****************************************************************************/
1548		1872
1549	struct ev_once	1873	struct ev_once
1550	{	1874	{
1551	struct ev_io io;	1875	ev_io io;
1552	struct ev_timer to;	1876	ev_timer to;
1553	void (*cb)(int revents, void *arg);	1877	void (*cb)(int revents, void *arg);
1554	void *arg;	1878	void *arg;
1555	};	1879	};
1556		1880
1557	static void	1881	static void
…		…
1566		1890
1567	cb (revents, arg);	1891	cb (revents, arg);
1568	}	1892	}
1569		1893
1570	static void	1894	static void
1571	once_cb_io (EV_P_ struct ev_io *w, int revents)	1895	once_cb_io (EV_P_ ev_io *w, int revents)
1572	{	1896	{
1573	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1897	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1574	}	1898	}
1575		1899
1576	static void	1900	static void
1577	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1901	once_cb_to (EV_P_ ev_timer *w, int revents)
1578	{	1902	{
1579	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1903	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1580	}	1904	}
1581		1905
1582	void	1906	void
1583	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1907	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1584	{	1908	{
1585	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	1909	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1586		1910
1587	if (!once)	1911	if (expect_false (!once))
		1912	{
1588	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1913	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1589	else	1914	return;
1590	{	1915	}
		1916
1591	once->cb = cb;	1917	once->cb = cb;
1592	once->arg = arg;	1918	once->arg = arg;
1593		1919
1594	ev_init (&once->io, once_cb_io);	1920	ev_init (&once->io, once_cb_io);
1595	if (fd >= 0)	1921	if (fd >= 0)
1596	{	1922	{
1597	ev_io_set (&once->io, fd, events);	1923	ev_io_set (&once->io, fd, events);
1598	ev_io_start (EV_A_ &once->io);	1924	ev_io_start (EV_A_ &once->io);
1599	}	1925	}
1600		1926
1601	ev_init (&once->to, once_cb_to);	1927	ev_init (&once->to, once_cb_to);
1602	if (timeout >= 0.)	1928	if (timeout >= 0.)
1603	{	1929	{
1604	ev_timer_set (&once->to, timeout, 0.);	1930	ev_timer_set (&once->to, timeout, 0.);
1605	ev_timer_start (EV_A_ &once->to);	1931	ev_timer_start (EV_A_ &once->to);
1606	}
1607	}	1932	}
1608	}	1933	}
1609		1934
1610	#ifdef __cplusplus	1935	#ifdef __cplusplus
1611	}	1936	}

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