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Comparing libev/ev.c (file contents):
Revision 1.98 by root, Sun Nov 11 02:05:20 2007 UTC vs.
Revision 1.146 by root, Tue Nov 27 09:17:51 2007 UTC

…		…
32	#ifdef __cplusplus	32	#ifdef __cplusplus
33	extern "C" {	33	extern "C" {
34	#endif	34	#endif
35		35
36	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
37	# include "config.h"	40	# include "config.h"
		41	# endif
38		42
39	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
40	# ifndef EV_USE_MONOTONIC	44	# ifndef EV_USE_MONOTONIC
41	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
42	# endif	46	# endif
43	# ifndef EV_USE_REALTIME	47	# ifndef EV_USE_REALTIME
44	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
45	# endif	49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
46	# endif	57	# endif
47		58
48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)	59	# ifndef EV_USE_SELECT
		60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
49	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
50	# endif	65	# endif
51		66
52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)	67	# ifndef EV_USE_POLL
		68	# if HAVE_POLL && HAVE_POLL_H
53	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
54	# endif	73	# endif
55		74
56	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)	75	# ifndef EV_USE_EPOLL
		76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
57	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
58	# endif	81	# endif
59		82
		83	# ifndef EV_USE_KQUEUE
60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
61	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
62	# endif	97	# endif
63		98
64	#endif	99	#endif
65		100
66	#include <math.h>	101	#include <math.h>
…		…
75	#include <sys/types.h>	110	#include <sys/types.h>
76	#include <time.h>	111	#include <time.h>
77		112
78	#include <signal.h>	113	#include <signal.h>
79		114
80	#ifndef WIN32	115	#ifndef _WIN32
81	# include <unistd.h>
82	# include <sys/time.h>	116	# include <sys/time.h>
83	# 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
84	#endif	124	# endif
		125	#endif
		126
85	/**/	127	/**/
86		128
87	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
88	# 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
89	#endif	135	#endif
90		136
91	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
92	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
93	#endif	139	#endif
94		140
95	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
96	# 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
97	#endif	147	#endif
98		148
99	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
100	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
101	#endif	151	#endif
102		152
103	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
104	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
105	#endif	155	#endif
106		156
107	#ifndef EV_USE_WIN32
108	# ifdef WIN32
109	# define EV_USE_WIN32 0 /* it does not exist, use select */
110	# undef EV_USE_SELECT
111	# define EV_USE_SELECT 1
112	# else
113	# define EV_USE_WIN32 0
114	# endif
115	#endif
116
117	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
118	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
119	#endif	159	#endif
120		160
121	/**/	161	/**/
122		162
123	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
128	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
129	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
130	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
131	#endif	171	#endif
132		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
133	/**/	177	/**/
134		178
135	#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) */
136	#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) */
137	#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 */
138	/*#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 */
139		183
140	#ifdef EV_H	184	#ifdef EV_H
141	# include EV_H	185	# include EV_H
142	#else	186	#else
143	# include "ev.h"	187	# include "ev.h"
144	#endif	188	#endif
145		189
146	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
147	# 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
148	# 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
149	#else	200	#else
150	# define expect(expr,value) (expr)	201	# define expect(expr,value) (expr)
		202	# define inline_speed static
151	# define inline static	203	# define inline_size static
		204	# define noinline
152	#endif	205	#endif
153		206
154	#define expect_false(expr) expect ((expr) != 0, 0)	207	#define expect_false(expr) expect ((expr) != 0, 0)
155	#define expect_true(expr) expect ((expr) != 0, 1)	208	#define expect_true(expr) expect ((expr) != 0, 1)
156		209
157	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
158	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
159		212
		213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		214	#define EMPTY2(a,b) /* used to suppress some warnings */
		215
160	typedef struct ev_watcher *W;	216	typedef ev_watcher *W;
161	typedef struct ev_watcher_list *WL;	217	typedef ev_watcher_list *WL;
162	typedef struct ev_watcher_time *WT;	218	typedef ev_watcher_time *WT;
163		219
164	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
165		221
166	#ifdef WIN32	222	#ifdef _WIN32
167	# include "ev_win32.c"	223	# include "ev_win32.c"
168	#endif	224	#endif
169		225
170	/*****************************************************************************/	226	/*****************************************************************************/
171		227
172	static void (*syserr_cb)(const char *msg);	228	static void (*syserr_cb)(const char *msg);
173		229
		230	void
174	void ev_set_syserr_cb (void (*cb)(const char *msg))	231	ev_set_syserr_cb (void (*cb)(const char *msg))
175	{	232	{
176	syserr_cb = cb;	233	syserr_cb = cb;
177	}	234	}
178		235
179	static void	236	static void noinline
180	syserr (const char *msg)	237	syserr (const char *msg)
181	{	238	{
182	if (!msg)	239	if (!msg)
183	msg = "(libev) system error";	240	msg = "(libev) system error";
184		241
…		…
191	}	248	}
192	}	249	}
193		250
194	static void *(*alloc)(void *ptr, long size);	251	static void *(*alloc)(void *ptr, long size);
195		252
		253	void
196	void ev_set_allocator (void *(*cb)(void *ptr, long size))	254	ev_set_allocator (void *(*cb)(void *ptr, long size))
197	{	255	{
198	alloc = cb;	256	alloc = cb;
199	}	257	}
200		258
201	static void *	259	static void *
…		…
220	typedef struct	278	typedef struct
221	{	279	{
222	WL head;	280	WL head;
223	unsigned char events;	281	unsigned char events;
224	unsigned char reify;	282	unsigned char reify;
		283	#if EV_SELECT_IS_WINSOCKET
		284	SOCKET handle;
		285	#endif
225	} ANFD;	286	} ANFD;
226		287
227	typedef struct	288	typedef struct
228	{	289	{
229	W w;	290	W w;
…		…
233	#if EV_MULTIPLICITY	294	#if EV_MULTIPLICITY
234		295
235	struct ev_loop	296	struct ev_loop
236	{	297	{
237	ev_tstamp ev_rt_now;	298	ev_tstamp ev_rt_now;
		299	#define ev_rt_now ((loop)->ev_rt_now)
238	#define VAR(name,decl) decl;	300	#define VAR(name,decl) decl;
239	#include "ev_vars.h"	301	#include "ev_vars.h"
240	#undef VAR	302	#undef VAR
241	};	303	};
242	#include "ev_wrap.h"	304	#include "ev_wrap.h"
243		305
244	struct ev_loop default_loop_struct;	306	static struct ev_loop default_loop_struct;
245	static struct ev_loop *default_loop;	307	struct ev_loop *ev_default_loop_ptr;
246		308
247	#else	309	#else
248		310
249	ev_tstamp ev_rt_now;	311	ev_tstamp ev_rt_now;
250	#define VAR(name,decl) static decl;	312	#define VAR(name,decl) static decl;
251	#include "ev_vars.h"	313	#include "ev_vars.h"
252	#undef VAR	314	#undef VAR
253		315
254	static int default_loop;	316	static int ev_default_loop_ptr;
255		317
256	#endif	318	#endif
257		319
258	/*****************************************************************************/	320	/*****************************************************************************/
259		321
…		…
269	gettimeofday (&tv, 0);	331	gettimeofday (&tv, 0);
270	return tv.tv_sec + tv.tv_usec * 1e-6;	332	return tv.tv_sec + tv.tv_usec * 1e-6;
271	#endif	333	#endif
272	}	334	}
273		335
274	inline ev_tstamp	336	ev_tstamp inline_size
275	get_clock (void)	337	get_clock (void)
276	{	338	{
277	#if EV_USE_MONOTONIC	339	#if EV_USE_MONOTONIC
278	if (expect_true (have_monotonic))	340	if (expect_true (have_monotonic))
279	{	341	{
…		…
292	{	354	{
293	return ev_rt_now;	355	return ev_rt_now;
294	}	356	}
295	#endif	357	#endif
296		358
297	#define array_roundsize(type,n) ((n) | 4 & ~3)	359	#define array_roundsize(type,n) (((n) | 4) & ~3)
298		360
299	#define array_needsize(type,base,cur,cnt,init) \	361	#define array_needsize(type,base,cur,cnt,init) \
300	if (expect_false ((cnt) > cur)) \	362	if (expect_false ((cnt) > cur)) \
301	{ \	363	{ \
302	int newcnt = cur; \	364	int newcnt = cur; \
…		…
317	stem ## max = array_roundsize (stem ## cnt >> 1); \	379	stem ## max = array_roundsize (stem ## cnt >> 1); \
318	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	380	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
319	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	381	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
320	}	382	}
321		383
322	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
323	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
324	#define array_free_microshit(stem) \
325	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
326
327	#define array_free(stem, idx) \	384	#define array_free(stem, idx) \
328	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;
329		386
330	/*****************************************************************************/	387	/*****************************************************************************/
331		388
332	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
333	anfds_init (ANFD *base, int count)	418	anfds_init (ANFD *base, int count)
334	{	419	{
335	while (count--)	420	while (count--)
336	{	421	{
337	base->head = 0;	422	base->head = 0;
…		…
340		425
341	++base;	426	++base;
342	}	427	}
343	}	428	}
344		429
345	void	430	void inline_speed
346	ev_feed_event (EV_P_ void *w, int revents)
347	{
348	W w_ = (W)w;
349
350	if (w_->pending)
351	{
352	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
353	return;
354	}
355
356	w_->pending = ++pendingcnt [ABSPRI (w_)];
357	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
358	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
359	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
360	}
361
362	static void
363	queue_events (EV_P_ W *events, int eventcnt, int type)
364	{
365	int i;
366
367	for (i = 0; i < eventcnt; ++i)
368	ev_feed_event (EV_A_ events [i], type);
369	}
370
371	inline void
372	fd_event (EV_P_ int fd, int revents)	431	fd_event (EV_P_ int fd, int revents)
373	{	432	{
374	ANFD *anfd = anfds + fd;	433	ANFD *anfd = anfds + fd;
375	struct ev_io *w;	434	ev_io *w;
376		435
377	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)
378	{	437	{
379	int ev = w->events & revents;	438	int ev = w->events & revents;
380		439
381	if (ev)	440	if (ev)
382	ev_feed_event (EV_A_ (W)w, ev);	441	ev_feed_event (EV_A_ (W)w, ev);
…		…
387	ev_feed_fd_event (EV_P_ int fd, int revents)	446	ev_feed_fd_event (EV_P_ int fd, int revents)
388	{	447	{
389	fd_event (EV_A_ fd, revents);	448	fd_event (EV_A_ fd, revents);
390	}	449	}
391		450
392	/*****************************************************************************/	451	void inline_size
393
394	static void
395	fd_reify (EV_P)	452	fd_reify (EV_P)
396	{	453	{
397	int i;	454	int i;
398		455
399	for (i = 0; i < fdchangecnt; ++i)	456	for (i = 0; i < fdchangecnt; ++i)
400	{	457	{
401	int fd = fdchanges [i];	458	int fd = fdchanges [i];
402	ANFD *anfd = anfds + fd;	459	ANFD *anfd = anfds + fd;
403	struct ev_io *w;	460	ev_io *w;
404		461
405	int events = 0;	462	int events = 0;
406		463
407	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)
408	events |= w->events;	465	events |= w->events;
409		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
410	anfd->reify = 0;	476	anfd->reify = 0;
411		477
412	method_modify (EV_A_ fd, anfd->events, events);	478	backend_modify (EV_A_ fd, anfd->events, events);
413	anfd->events = events;	479	anfd->events = events;
414	}	480	}
415		481
416	fdchangecnt = 0;	482	fdchangecnt = 0;
417	}	483	}
418		484
419	static void	485	void inline_size
420	fd_change (EV_P_ int fd)	486	fd_change (EV_P_ int fd)
421	{	487	{
422	if (anfds [fd].reify)	488	if (expect_false (anfds [fd].reify))
423	return;	489	return;
424		490
425	anfds [fd].reify = 1;	491	anfds [fd].reify = 1;
426		492
427	++fdchangecnt;	493	++fdchangecnt;
428	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	494	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
429	fdchanges [fdchangecnt - 1] = fd;	495	fdchanges [fdchangecnt - 1] = fd;
430	}	496	}
431		497
432	static void	498	void inline_speed
433	fd_kill (EV_P_ int fd)	499	fd_kill (EV_P_ int fd)
434	{	500	{
435	struct ev_io *w;	501	ev_io *w;
436		502
437	while ((w = (struct ev_io *)anfds [fd].head))	503	while ((w = (ev_io *)anfds [fd].head))
438	{	504	{
439	ev_io_stop (EV_A_ w);	505	ev_io_stop (EV_A_ w);
440	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);
441	}	507	}
442	}	508	}
443		509
444	static int	510	int inline_size
445	fd_valid (int fd)	511	fd_valid (int fd)
446	{	512	{
447	#ifdef WIN32	513	#ifdef _WIN32
448	return !!win32_get_osfhandle (fd);	514	return _get_osfhandle (fd) != -1;
449	#else	515	#else
450	return fcntl (fd, F_GETFD) != -1;	516	return fcntl (fd, F_GETFD) != -1;
451	#endif	517	#endif
452	}	518	}
453		519
454	/* called on EBADF to verify fds */	520	/* called on EBADF to verify fds */
455	static void	521	static void noinline
456	fd_ebadf (EV_P)	522	fd_ebadf (EV_P)
457	{	523	{
458	int fd;	524	int fd;
459		525
460	for (fd = 0; fd < anfdmax; ++fd)	526	for (fd = 0; fd < anfdmax; ++fd)
…		…
462	if (!fd_valid (fd) == -1 && errno == EBADF)	528	if (!fd_valid (fd) == -1 && errno == EBADF)
463	fd_kill (EV_A_ fd);	529	fd_kill (EV_A_ fd);
464	}	530	}
465		531
466	/* 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 */
467	static void	533	static void noinline
468	fd_enomem (EV_P)	534	fd_enomem (EV_P)
469	{	535	{
470	int fd;	536	int fd;
471		537
472	for (fd = anfdmax; fd--; )	538	for (fd = anfdmax; fd--; )
…		…
475	fd_kill (EV_A_ fd);	541	fd_kill (EV_A_ fd);
476	return;	542	return;
477	}	543	}
478	}	544	}
479		545
480	/* 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 */
481	static void	547	static void noinline
482	fd_rearm_all (EV_P)	548	fd_rearm_all (EV_P)
483	{	549	{
484	int fd;	550	int fd;
485		551
486	/* 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 */
…		…
492	}	558	}
493	}	559	}
494		560
495	/*****************************************************************************/	561	/*****************************************************************************/
496		562
497	static void	563	void inline_speed
498	upheap (WT *heap, int k)	564	upheap (WT *heap, int k)
499	{	565	{
500	WT w = heap [k];	566	WT w = heap [k];
501		567
502	while (k && heap [k >> 1]->at > w->at)	568	while (k && heap [k >> 1]->at > w->at)
…		…
509	heap [k] = w;	575	heap [k] = w;
510	((W)heap [k])->active = k + 1;	576	((W)heap [k])->active = k + 1;
511		577
512	}	578	}
513		579
514	static void	580	void inline_speed
515	downheap (WT *heap, int N, int k)	581	downheap (WT *heap, int N, int k)
516	{	582	{
517	WT w = heap [k];	583	WT w = heap [k];
518		584
519	while (k < (N >> 1))	585	while (k < (N >> 1))
…		…
533		599
534	heap [k] = w;	600	heap [k] = w;
535	((W)heap [k])->active = k + 1;	601	((W)heap [k])->active = k + 1;
536	}	602	}
537		603
538	inline void	604	void inline_size
539	adjustheap (WT *heap, int N, int k, ev_tstamp at)	605	adjustheap (WT *heap, int N, int k)
540	{	606	{
541	ev_tstamp old_at = heap [k]->at;	607	upheap (heap, k);
542	heap [k]->at = at;
543
544	if (old_at < at)
545	downheap (heap, N, k);	608	downheap (heap, N, k);
546	else
547	upheap (heap, k);
548	}	609	}
549		610
550	/*****************************************************************************/	611	/*****************************************************************************/
551		612
552	typedef struct	613	typedef struct
…		…
558	static ANSIG *signals;	619	static ANSIG *signals;
559	static int signalmax;	620	static int signalmax;
560		621
561	static int sigpipe [2];	622	static int sigpipe [2];
562	static sig_atomic_t volatile gotsig;	623	static sig_atomic_t volatile gotsig;
563	static struct ev_io sigev;	624	static ev_io sigev;
564		625
565	static void	626	void inline_size
566	signals_init (ANSIG *base, int count)	627	signals_init (ANSIG *base, int count)
567	{	628	{
568	while (count--)	629	while (count--)
569	{	630	{
570	base->head = 0;	631	base->head = 0;
…		…
575	}	636	}
576		637
577	static void	638	static void
578	sighandler (int signum)	639	sighandler (int signum)
579	{	640	{
580	#if WIN32	641	#if _WIN32
581	signal (signum, sighandler);	642	signal (signum, sighandler);
582	#endif	643	#endif
583		644
584	signals [signum - 1].gotsig = 1;	645	signals [signum - 1].gotsig = 1;
585		646
586	if (!gotsig)	647	if (!gotsig)
587	{	648	{
588	int old_errno = errno;	649	int old_errno = errno;
589	gotsig = 1;	650	gotsig = 1;
590	#ifdef WIN32
591	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
592	#else
593	write (sigpipe [1], &signum, 1);	651	write (sigpipe [1], &signum, 1);
594	#endif
595	errno = old_errno;	652	errno = old_errno;
596	}	653	}
597	}	654	}
598		655
599	void	656	void noinline
600	ev_feed_signal_event (EV_P_ int signum)	657	ev_feed_signal_event (EV_P_ int signum)
601	{	658	{
602	WL w;	659	WL w;
603		660
604	#if EV_MULTIPLICITY	661	#if EV_MULTIPLICITY
605	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));
606	#endif	663	#endif
607		664
608	--signum;	665	--signum;
609		666
610	if (signum < 0 || signum >= signalmax)	667	if (signum < 0 || signum >= signalmax)
…		…
615	for (w = signals [signum].head; w; w = w->next)	672	for (w = signals [signum].head; w; w = w->next)
616	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	673	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
617	}	674	}
618		675
619	static void	676	static void
620	sigcb (EV_P_ struct ev_io *iow, int revents)	677	sigcb (EV_P_ ev_io *iow, int revents)
621	{	678	{
622	int signum;	679	int signum;
623		680
624	#ifdef WIN32
625	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
626	#else
627	read (sigpipe [0], &revents, 1);	681	read (sigpipe [0], &revents, 1);
628	#endif
629	gotsig = 0;	682	gotsig = 0;
630		683
631	for (signum = signalmax; signum--; )	684	for (signum = signalmax; signum--; )
632	if (signals [signum].gotsig)	685	if (signals [signum].gotsig)
633	ev_feed_signal_event (EV_A_ signum + 1);	686	ev_feed_signal_event (EV_A_ signum + 1);
634	}	687	}
635		688
636	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
637	siginit (EV_P)	702	siginit (EV_P)
638	{	703	{
639	#ifndef WIN32	704	fd_intern (sigpipe [0]);
640	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	705	fd_intern (sigpipe [1]);
641	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
642
643	/* rather than sort out wether we really need nb, set it */
644	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
645	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
646	#endif
647		706
648	ev_io_set (&sigev, sigpipe [0], EV_READ);	707	ev_io_set (&sigev, sigpipe [0], EV_READ);
649	ev_io_start (EV_A_ &sigev);	708	ev_io_start (EV_A_ &sigev);
650	ev_unref (EV_A); /* child watcher should not keep loop alive */	709	ev_unref (EV_A); /* child watcher should not keep loop alive */
651	}	710	}
652		711
653	/*****************************************************************************/	712	/*****************************************************************************/
654		713
655	static struct ev_child *childs [PID_HASHSIZE];	714	static ev_child *childs [PID_HASHSIZE];
656		715
657	#ifndef WIN32	716	#ifndef _WIN32
658		717
659	static struct ev_signal childev;	718	static ev_signal childev;
660		719
661	#ifndef WCONTINUED	720	void inline_speed
662	# define WCONTINUED 0
663	#endif
664
665	static void
666	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)
667	{	722	{
668	struct ev_child *w;	723	ev_child *w;
669		724
670	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)
671	if (w->pid == pid || !w->pid)	726	if (w->pid == pid || !w->pid)
672	{	727	{
673	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	728	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
674	w->rpid = pid;	729	w->rpid = pid;
675	w->rstatus = status;	730	w->rstatus = status;
676	ev_feed_event (EV_A_ (W)w, EV_CHILD);	731	ev_feed_event (EV_A_ (W)w, EV_CHILD);
677	}	732	}
678	}	733	}
679		734
		735	#ifndef WCONTINUED
		736	# define WCONTINUED 0
		737	#endif
		738
680	static void	739	static void
681	childcb (EV_P_ struct ev_signal *sw, int revents)	740	childcb (EV_P_ ev_signal *sw, int revents)
682	{	741	{
683	int pid, status;	742	int pid, status;
684		743
		744	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
685	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	745	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
686	{	746	if (!WCONTINUED
		747	|| errno != EINVAL
		748	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		749	return;
		750
687	/* 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 */
688	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	753	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
689		754
690	child_reap (EV_A_ sw, pid, pid, status);	755	child_reap (EV_A_ sw, pid, pid, status);
691	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 */
692	}
693	}	757	}
694		758
695	#endif	759	#endif
696		760
697	/*****************************************************************************/	761	/*****************************************************************************/
698		762
		763	#if EV_USE_PORT
		764	# include "ev_port.c"
		765	#endif
699	#if EV_USE_KQUEUE	766	#if EV_USE_KQUEUE
700	# include "ev_kqueue.c"	767	# include "ev_kqueue.c"
701	#endif	768	#endif
702	#if EV_USE_EPOLL	769	#if EV_USE_EPOLL
703	# include "ev_epoll.c"	770	# include "ev_epoll.c"
…		…
720	{	787	{
721	return EV_VERSION_MINOR;	788	return EV_VERSION_MINOR;
722	}	789	}
723		790
724	/* 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 */
725	static int	792	int inline_size
726	enable_secure (void)	793	enable_secure (void)
727	{	794	{
728	#ifdef WIN32	795	#ifdef _WIN32
729	return 0;	796	return 0;
730	#else	797	#else
731	return getuid () != geteuid ()	798	return getuid () != geteuid ()
732	|| getgid () != getegid ();	799	|| getgid () != getegid ();
733	#endif	800	#endif
734	}	801	}
735		802
736	int	803	unsigned int
737	ev_method (EV_P)	804	ev_supported_backends (void)
738	{	805	{
739	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;
740	}	847	}
741		848
742	static void	849	static void
743	loop_init (EV_P_ int methods)	850	loop_init (EV_P_ unsigned int flags)
744	{	851	{
745	if (!method)	852	if (!backend)
746	{	853	{
747	#if EV_USE_MONOTONIC	854	#if EV_USE_MONOTONIC
748	{	855	{
749	struct timespec ts;	856	struct timespec ts;
750	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	857	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
755	ev_rt_now = ev_time ();	862	ev_rt_now = ev_time ();
756	mn_now = get_clock ();	863	mn_now = get_clock ();
757	now_floor = mn_now;	864	now_floor = mn_now;
758	rtmn_diff = ev_rt_now - mn_now;	865	rtmn_diff = ev_rt_now - mn_now;
759		866
760	if (methods == EVMETHOD_AUTO)	867	if (!(flags & EVFLAG_NOENV)
761	if (!enable_secure () && getenv ("LIBEV_METHODS"))	868	&& !enable_secure ()
		869	&& getenv ("LIBEV_FLAGS"))
762	methods = atoi (getenv ("LIBEV_METHODS"));	870	flags = atoi (getenv ("LIBEV_FLAGS"));
763	else
764	methods = EVMETHOD_ANY;
765		871
766	method = 0;	872	if (!(flags & 0x0000ffffUL))
767	#if EV_USE_WIN32	873	flags |= ev_recommended_backends ();
768	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);
769	#endif	878	#endif
770	#if EV_USE_KQUEUE	879	#if EV_USE_KQUEUE
771	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	880	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
772	#endif	881	#endif
773	#if EV_USE_EPOLL	882	#if EV_USE_EPOLL
774	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	883	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
775	#endif	884	#endif
776	#if EV_USE_POLL	885	#if EV_USE_POLL
777	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	886	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
778	#endif	887	#endif
779	#if EV_USE_SELECT	888	#if EV_USE_SELECT
780	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	889	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
781	#endif	890	#endif
782		891
783	ev_init (&sigev, sigcb);	892	ev_init (&sigev, sigcb);
784	ev_set_priority (&sigev, EV_MAXPRI);	893	ev_set_priority (&sigev, EV_MAXPRI);
785	}	894	}
786	}	895	}
787		896
788	void	897	static void
789	loop_destroy (EV_P)	898	loop_destroy (EV_P)
790	{	899	{
791	int i;	900	int i;
792		901
793	#if EV_USE_WIN32	902	#if EV_USE_PORT
794	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	903	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
795	#endif	904	#endif
796	#if EV_USE_KQUEUE	905	#if EV_USE_KQUEUE
797	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	906	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
798	#endif	907	#endif
799	#if EV_USE_EPOLL	908	#if EV_USE_EPOLL
800	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	909	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
801	#endif	910	#endif
802	#if EV_USE_POLL	911	#if EV_USE_POLL
803	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	912	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
804	#endif	913	#endif
805	#if EV_USE_SELECT	914	#if EV_USE_SELECT
806	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	915	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
807	#endif	916	#endif
808		917
809	for (i = NUMPRI; i--; )	918	for (i = NUMPRI; i--; )
810	array_free (pending, [i]);	919	array_free (pending, [i]);
811		920
812	/* have to use the microsoft-never-gets-it-right macro */	921	/* have to use the microsoft-never-gets-it-right macro */
813	array_free_microshit (fdchange);	922	array_free (fdchange, EMPTY0);
814	array_free_microshit (timer);	923	array_free (timer, EMPTY0);
815	#if EV_PERIODICS	924	#if EV_PERIODIC_ENABLE
816	array_free_microshit (periodic);	925	array_free (periodic, EMPTY0);
817	#endif	926	#endif
818	array_free_microshit (idle);	927	array_free (idle, EMPTY0);
819	array_free_microshit (prepare);	928	array_free (prepare, EMPTY0);
820	array_free_microshit (check);	929	array_free (check, EMPTY0);
821		930
822	method = 0;	931	backend = 0;
823	}	932	}
824		933
825	static void	934	static void
826	loop_fork (EV_P)	935	loop_fork (EV_P)
827	{	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
828	#if EV_USE_EPOLL	943	#if EV_USE_EPOLL
829	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	944	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
830	#endif
831	#if EV_USE_KQUEUE
832	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
833	#endif	945	#endif
834		946
835	if (ev_is_active (&sigev))	947	if (ev_is_active (&sigev))
836	{	948	{
837	/* default loop */	949	/* default loop */
…		…
850	postfork = 0;	962	postfork = 0;
851	}	963	}
852		964
853	#if EV_MULTIPLICITY	965	#if EV_MULTIPLICITY
854	struct ev_loop *	966	struct ev_loop *
855	ev_loop_new (int methods)	967	ev_loop_new (unsigned int flags)
856	{	968	{
857	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));
858		970
859	memset (loop, 0, sizeof (struct ev_loop));	971	memset (loop, 0, sizeof (struct ev_loop));
860		972
861	loop_init (EV_A_ methods);	973	loop_init (EV_A_ flags);
862		974
863	if (ev_method (EV_A))	975	if (ev_backend (EV_A))
864	return loop;	976	return loop;
865		977
866	return 0;	978	return 0;
867	}	979	}
868		980
…		…
881		993
882	#endif	994	#endif
883		995
884	#if EV_MULTIPLICITY	996	#if EV_MULTIPLICITY
885	struct ev_loop *	997	struct ev_loop *
		998	ev_default_loop_init (unsigned int flags)
886	#else	999	#else
887	int	1000	int
		1001	ev_default_loop (unsigned int flags)
888	#endif	1002	#endif
889	ev_default_loop (int methods)
890	{	1003	{
891	if (sigpipe [0] == sigpipe [1])	1004	if (sigpipe [0] == sigpipe [1])
892	if (pipe (sigpipe))	1005	if (pipe (sigpipe))
893	return 0;	1006	return 0;
894		1007
895	if (!default_loop)	1008	if (!ev_default_loop_ptr)
896	{	1009	{
897	#if EV_MULTIPLICITY	1010	#if EV_MULTIPLICITY
898	struct ev_loop *loop = default_loop = &default_loop_struct;	1011	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
899	#else	1012	#else
900	default_loop = 1;	1013	ev_default_loop_ptr = 1;
901	#endif	1014	#endif
902		1015
903	loop_init (EV_A_ methods);	1016	loop_init (EV_A_ flags);
904		1017
905	if (ev_method (EV_A))	1018	if (ev_backend (EV_A))
906	{	1019	{
907	siginit (EV_A);	1020	siginit (EV_A);
908		1021
909	#ifndef WIN32	1022	#ifndef _WIN32
910	ev_signal_init (&childev, childcb, SIGCHLD);	1023	ev_signal_init (&childev, childcb, SIGCHLD);
911	ev_set_priority (&childev, EV_MAXPRI);	1024	ev_set_priority (&childev, EV_MAXPRI);
912	ev_signal_start (EV_A_ &childev);	1025	ev_signal_start (EV_A_ &childev);
913	ev_unref (EV_A); /* child watcher should not keep loop alive */	1026	ev_unref (EV_A); /* child watcher should not keep loop alive */
914	#endif	1027	#endif
915	}	1028	}
916	else	1029	else
917	default_loop = 0;	1030	ev_default_loop_ptr = 0;
918	}	1031	}
919		1032
920	return default_loop;	1033	return ev_default_loop_ptr;
921	}	1034	}
922		1035
923	void	1036	void
924	ev_default_destroy (void)	1037	ev_default_destroy (void)
925	{	1038	{
926	#if EV_MULTIPLICITY	1039	#if EV_MULTIPLICITY
927	struct ev_loop *loop = default_loop;	1040	struct ev_loop *loop = ev_default_loop_ptr;
928	#endif	1041	#endif
929		1042
930	#ifndef WIN32	1043	#ifndef _WIN32
931	ev_ref (EV_A); /* child watcher */	1044	ev_ref (EV_A); /* child watcher */
932	ev_signal_stop (EV_A_ &childev);	1045	ev_signal_stop (EV_A_ &childev);
933	#endif	1046	#endif
934		1047
935	ev_ref (EV_A); /* signal watcher */	1048	ev_ref (EV_A); /* signal watcher */
…		…
943		1056
944	void	1057	void
945	ev_default_fork (void)	1058	ev_default_fork (void)
946	{	1059	{
947	#if EV_MULTIPLICITY	1060	#if EV_MULTIPLICITY
948	struct ev_loop *loop = default_loop;	1061	struct ev_loop *loop = ev_default_loop_ptr;
949	#endif	1062	#endif
950		1063
951	if (method)	1064	if (backend)
952	postfork = 1;	1065	postfork = 1;
953	}	1066	}
954		1067
955	/*****************************************************************************/	1068	/*****************************************************************************/
956		1069
957	static int	1070	int inline_size
958	any_pending (EV_P)	1071	any_pending (EV_P)
959	{	1072	{
960	int pri;	1073	int pri;
961		1074
962	for (pri = NUMPRI; pri--; )	1075	for (pri = NUMPRI; pri--; )
…		…
964	return 1;	1077	return 1;
965		1078
966	return 0;	1079	return 0;
967	}	1080	}
968		1081
969	static void	1082	void inline_speed
970	call_pending (EV_P)	1083	call_pending (EV_P)
971	{	1084	{
972	int pri;	1085	int pri;
973		1086
974	for (pri = NUMPRI; pri--; )	1087	for (pri = NUMPRI; pri--; )
975	while (pendingcnt [pri])	1088	while (pendingcnt [pri])
976	{	1089	{
977	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1090	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
978		1091
979	if (p->w)	1092	if (expect_true (p->w))
980	{	1093	{
		1094	assert (("non-pending watcher on pending list", p->w->pending));
		1095
981	p->w->pending = 0;	1096	p->w->pending = 0;
982	EV_CB_INVOKE (p->w, p->events);	1097	EV_CB_INVOKE (p->w, p->events);
983	}	1098	}
984	}	1099	}
985	}	1100	}
986		1101
987	static void	1102	void inline_size
988	timers_reify (EV_P)	1103	timers_reify (EV_P)
989	{	1104	{
990	while (timercnt && ((WT)timers [0])->at <= mn_now)	1105	while (timercnt && ((WT)timers [0])->at <= mn_now)
991	{	1106	{
992	struct ev_timer *w = timers [0];	1107	ev_timer *w = timers [0];
993		1108
994	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1109	assert (("inactive timer on timer heap detected", ev_is_active (w)));
995		1110
996	/* first reschedule or stop timer */	1111	/* first reschedule or stop timer */
997	if (w->repeat)	1112	if (w->repeat)
…		…
1009		1124
1010	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1125	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1011	}	1126	}
1012	}	1127	}
1013		1128
1014	#if EV_PERIODICS	1129	#if EV_PERIODIC_ENABLE
1015	static void	1130	void inline_size
1016	periodics_reify (EV_P)	1131	periodics_reify (EV_P)
1017	{	1132	{
1018	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1133	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1019	{	1134	{
1020	struct ev_periodic *w = periodics [0];	1135	ev_periodic *w = periodics [0];
1021		1136
1022	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1137	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1023		1138
1024	/* first reschedule or stop timer */	1139	/* first reschedule or stop timer */
1025	if (w->reschedule_cb)	1140	if (w->reschedule_cb)
1026	{	1141	{
1027	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);
1028
1029	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));
1030	downheap ((WT *)periodics, periodiccnt, 0);	1144	downheap ((WT *)periodics, periodiccnt, 0);
1031	}	1145	}
1032	else if (w->interval)	1146	else if (w->interval)
1033	{	1147	{
…		…
1040		1154
1041	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1155	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1042	}	1156	}
1043	}	1157	}
1044		1158
1045	static void	1159	static void noinline
1046	periodics_reschedule (EV_P)	1160	periodics_reschedule (EV_P)
1047	{	1161	{
1048	int i;	1162	int i;
1049		1163
1050	/* adjust periodics after time jump */	1164	/* adjust periodics after time jump */
1051	for (i = 0; i < periodiccnt; ++i)	1165	for (i = 0; i < periodiccnt; ++i)
1052	{	1166	{
1053	struct ev_periodic *w = periodics [i];	1167	ev_periodic *w = periodics [i];
1054		1168
1055	if (w->reschedule_cb)	1169	if (w->reschedule_cb)
1056	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1170	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1057	else if (w->interval)	1171	else if (w->interval)
1058	((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;
…		…
1062	for (i = periodiccnt >> 1; i--; )	1176	for (i = periodiccnt >> 1; i--; )
1063	downheap ((WT *)periodics, periodiccnt, i);	1177	downheap ((WT *)periodics, periodiccnt, i);
1064	}	1178	}
1065	#endif	1179	#endif
1066		1180
1067	inline int	1181	int inline_size
1068	time_update_monotonic (EV_P)	1182	time_update_monotonic (EV_P)
1069	{	1183	{
1070	mn_now = get_clock ();	1184	mn_now = get_clock ();
1071		1185
1072	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1186	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
…		…
1080	ev_rt_now = ev_time ();	1194	ev_rt_now = ev_time ();
1081	return 1;	1195	return 1;
1082	}	1196	}
1083	}	1197	}
1084		1198
1085	static void	1199	void inline_size
1086	time_update (EV_P)	1200	time_update (EV_P)
1087	{	1201	{
1088	int i;	1202	int i;
1089		1203
1090	#if EV_USE_MONOTONIC	1204	#if EV_USE_MONOTONIC
…		…
1092	{	1206	{
1093	if (time_update_monotonic (EV_A))	1207	if (time_update_monotonic (EV_A))
1094	{	1208	{
1095	ev_tstamp odiff = rtmn_diff;	1209	ev_tstamp odiff = rtmn_diff;
1096		1210
1097	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; )
1098	{	1220	{
1099	rtmn_diff = ev_rt_now - mn_now;	1221	rtmn_diff = ev_rt_now - mn_now;
1100		1222
1101	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1223	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1102	return; /* all is well */	1224	return; /* all is well */
…		…
1104	ev_rt_now = ev_time ();	1226	ev_rt_now = ev_time ();
1105	mn_now = get_clock ();	1227	mn_now = get_clock ();
1106	now_floor = mn_now;	1228	now_floor = mn_now;
1107	}	1229	}
1108		1230
1109	# if EV_PERIODICS	1231	# if EV_PERIODIC_ENABLE
1110	periodics_reschedule (EV_A);	1232	periodics_reschedule (EV_A);
1111	# endif	1233	# endif
1112	/* no timer adjustment, as the monotonic clock doesn't jump */	1234	/* no timer adjustment, as the monotonic clock doesn't jump */
1113	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1235	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1114	}	1236	}
…		…
1118	{	1240	{
1119	ev_rt_now = ev_time ();	1241	ev_rt_now = ev_time ();
1120		1242
1121	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))
1122	{	1244	{
1123	#if EV_PERIODICS	1245	#if EV_PERIODIC_ENABLE
1124	periodics_reschedule (EV_A);	1246	periodics_reschedule (EV_A);
1125	#endif	1247	#endif
1126		1248
1127	/* 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 */
1128	for (i = 0; i < timercnt; ++i)	1250	for (i = 0; i < timercnt; ++i)
…		…
1148	static int loop_done;	1270	static int loop_done;
1149		1271
1150	void	1272	void
1151	ev_loop (EV_P_ int flags)	1273	ev_loop (EV_P_ int flags)
1152	{	1274	{
1153	double block;
1154	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1275	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1276	? EVUNLOOP_ONE
		1277	: EVUNLOOP_CANCEL;
1155		1278
1156	do	1279	while (activecnt)
1157	{	1280	{
1158	/* queue check watchers (and execute them) */	1281	/* queue check watchers (and execute them) */
1159	if (expect_false (preparecnt))	1282	if (expect_false (preparecnt))
1160	{	1283	{
1161	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1284	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1168		1291
1169	/* update fd-related kernel structures */	1292	/* update fd-related kernel structures */
1170	fd_reify (EV_A);	1293	fd_reify (EV_A);
1171		1294
1172	/* calculate blocking time */	1295	/* calculate blocking time */
		1296	{
		1297	double block;
1173		1298
1174	/* we only need this for !monotonic clock or timers, but as we basically	1299	if (flags & EVLOOP_NONBLOCK || idlecnt)
1175	always have timers, we just calculate it always */	1300	block = 0.; /* do not block at all */
		1301	else
		1302	{
		1303	/* update time to cancel out callback processing overhead */
1176	#if EV_USE_MONOTONIC	1304	#if EV_USE_MONOTONIC
1177	if (expect_true (have_monotonic))	1305	if (expect_true (have_monotonic))
1178	time_update_monotonic (EV_A);	1306	time_update_monotonic (EV_A);
1179	else	1307	else
1180	#endif	1308	#endif
1181	{	1309	{
1182	ev_rt_now = ev_time ();	1310	ev_rt_now = ev_time ();
1183	mn_now = ev_rt_now;	1311	mn_now = ev_rt_now;
1184	}	1312	}
1185		1313
1186	if (flags & EVLOOP_NONBLOCK || idlecnt)
1187	block = 0.;
1188	else
1189	{
1190	block = MAX_BLOCKTIME;	1314	block = MAX_BLOCKTIME;
1191		1315
1192	if (timercnt)	1316	if (timercnt)
1193	{	1317	{
1194	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1318	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1195	if (block > to) block = to;	1319	if (block > to) block = to;
1196	}	1320	}
1197		1321
1198	#if EV_PERIODICS	1322	#if EV_PERIODIC_ENABLE
1199	if (periodiccnt)	1323	if (periodiccnt)
1200	{	1324	{
1201	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1325	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1202	if (block > to) block = to;	1326	if (block > to) block = to;
1203	}	1327	}
1204	#endif	1328	#endif
1205		1329
1206	if (block < 0.) block = 0.;	1330	if (expect_false (block < 0.)) block = 0.;
1207	}	1331	}
1208		1332
1209	method_poll (EV_A_ block);	1333	backend_poll (EV_A_ block);
		1334	}
1210		1335
1211	/* update ev_rt_now, do magic */	1336	/* update ev_rt_now, do magic */
1212	time_update (EV_A);	1337	time_update (EV_A);
1213		1338
1214	/* queue pending timers and reschedule them */	1339	/* queue pending timers and reschedule them */
1215	timers_reify (EV_A); /* relative timers called last */	1340	timers_reify (EV_A); /* relative timers called last */
1216	#if EV_PERIODICS	1341	#if EV_PERIODIC_ENABLE
1217	periodics_reify (EV_A); /* absolute timers called first */	1342	periodics_reify (EV_A); /* absolute timers called first */
1218	#endif	1343	#endif
1219		1344
1220	/* queue idle watchers unless io or timers are pending */	1345	/* queue idle watchers unless other events are pending */
1221	if (idlecnt && !any_pending (EV_A))	1346	if (idlecnt && !any_pending (EV_A))
1222	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1347	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1223		1348
1224	/* queue check watchers, to be executed first */	1349	/* queue check watchers, to be executed first */
1225	if (checkcnt)	1350	if (expect_false (checkcnt))
1226	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1351	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1227		1352
1228	call_pending (EV_A);	1353	call_pending (EV_A);
1229	}
1230	while (activecnt && !loop_done);
1231		1354
1232	if (loop_done != 2)	1355	if (expect_false (loop_done))
1233	loop_done = 0;	1356	break;
		1357	}
		1358
		1359	if (loop_done == EVUNLOOP_ONE)
		1360	loop_done = EVUNLOOP_CANCEL;
1234	}	1361	}
1235		1362
1236	void	1363	void
1237	ev_unloop (EV_P_ int how)	1364	ev_unloop (EV_P_ int how)
1238	{	1365	{
1239	loop_done = how;	1366	loop_done = how;
1240	}	1367	}
1241		1368
1242	/*****************************************************************************/	1369	/*****************************************************************************/
1243		1370
1244	inline void	1371	void inline_size
1245	wlist_add (WL *head, WL elem)	1372	wlist_add (WL *head, WL elem)
1246	{	1373	{
1247	elem->next = *head;	1374	elem->next = *head;
1248	*head = elem;	1375	*head = elem;
1249	}	1376	}
1250		1377
1251	inline void	1378	void inline_size
1252	wlist_del (WL *head, WL elem)	1379	wlist_del (WL *head, WL elem)
1253	{	1380	{
1254	while (*head)	1381	while (*head)
1255	{	1382	{
1256	if (*head == elem)	1383	if (*head == elem)
…		…
1261		1388
1262	head = &(*head)->next;	1389	head = &(*head)->next;
1263	}	1390	}
1264	}	1391	}
1265		1392
1266	inline void	1393	void inline_speed
1267	ev_clear_pending (EV_P_ W w)	1394	ev_clear_pending (EV_P_ W w)
1268	{	1395	{
1269	if (w->pending)	1396	if (w->pending)
1270	{	1397	{
1271	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1398	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1272	w->pending = 0;	1399	w->pending = 0;
1273	}	1400	}
1274	}	1401	}
1275		1402
1276	inline void	1403	void inline_speed
1277	ev_start (EV_P_ W w, int active)	1404	ev_start (EV_P_ W w, int active)
1278	{	1405	{
1279	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1406	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1280	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1407	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1281		1408
1282	w->active = active;	1409	w->active = active;
1283	ev_ref (EV_A);	1410	ev_ref (EV_A);
1284	}	1411	}
1285		1412
1286	inline void	1413	void inline_size
1287	ev_stop (EV_P_ W w)	1414	ev_stop (EV_P_ W w)
1288	{	1415	{
1289	ev_unref (EV_A);	1416	ev_unref (EV_A);
1290	w->active = 0;	1417	w->active = 0;
1291	}	1418	}
1292		1419
1293	/*****************************************************************************/	1420	/*****************************************************************************/
1294		1421
1295	void	1422	void
1296	ev_io_start (EV_P_ struct ev_io *w)	1423	ev_io_start (EV_P_ ev_io *w)
1297	{	1424	{
1298	int fd = w->fd;	1425	int fd = w->fd;
1299		1426
1300	if (ev_is_active (w))	1427	if (expect_false (ev_is_active (w)))
1301	return;	1428	return;
1302		1429
1303	assert (("ev_io_start called with negative fd", fd >= 0));	1430	assert (("ev_io_start called with negative fd", fd >= 0));
1304		1431
1305	ev_start (EV_A_ (W)w, 1);	1432	ev_start (EV_A_ (W)w, 1);
…		…
1308		1435
1309	fd_change (EV_A_ fd);	1436	fd_change (EV_A_ fd);
1310	}	1437	}
1311		1438
1312	void	1439	void
1313	ev_io_stop (EV_P_ struct ev_io *w)	1440	ev_io_stop (EV_P_ ev_io *w)
1314	{	1441	{
1315	ev_clear_pending (EV_A_ (W)w);	1442	ev_clear_pending (EV_A_ (W)w);
1316	if (!ev_is_active (w))	1443	if (expect_false (!ev_is_active (w)))
1317	return;	1444	return;
1318		1445
1319	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1446	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1320		1447
1321	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1448	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
…		…
1323		1450
1324	fd_change (EV_A_ w->fd);	1451	fd_change (EV_A_ w->fd);
1325	}	1452	}
1326		1453
1327	void	1454	void
1328	ev_timer_start (EV_P_ struct ev_timer *w)	1455	ev_timer_start (EV_P_ ev_timer *w)
1329	{	1456	{
1330	if (ev_is_active (w))	1457	if (expect_false (ev_is_active (w)))
1331	return;	1458	return;
1332		1459
1333	((WT)w)->at += mn_now;	1460	((WT)w)->at += mn_now;
1334		1461
1335	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1462	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1336		1463
1337	ev_start (EV_A_ (W)w, ++timercnt);	1464	ev_start (EV_A_ (W)w, ++timercnt);
1338	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1465	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1339	timers [timercnt - 1] = w;	1466	timers [timercnt - 1] = w;
1340	upheap ((WT *)timers, timercnt - 1);	1467	upheap ((WT *)timers, timercnt - 1);
1341		1468
1342	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1469	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1343	}	1470	}
1344		1471
1345	void	1472	void
1346	ev_timer_stop (EV_P_ struct ev_timer *w)	1473	ev_timer_stop (EV_P_ ev_timer *w)
1347	{	1474	{
1348	ev_clear_pending (EV_A_ (W)w);	1475	ev_clear_pending (EV_A_ (W)w);
1349	if (!ev_is_active (w))	1476	if (expect_false (!ev_is_active (w)))
1350	return;	1477	return;
1351		1478
1352	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1479	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1353		1480
1354	if (((W)w)->active < timercnt--)	1481	if (expect_true (((W)w)->active < timercnt--))
1355	{	1482	{
1356	timers [((W)w)->active - 1] = timers [timercnt];	1483	timers [((W)w)->active - 1] = timers [timercnt];
1357	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1484	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1358	}	1485	}
1359		1486
1360	((WT)w)->at -= mn_now;	1487	((WT)w)->at -= mn_now;
1361		1488
1362	ev_stop (EV_A_ (W)w);	1489	ev_stop (EV_A_ (W)w);
1363	}	1490	}
1364		1491
1365	void	1492	void
1366	ev_timer_again (EV_P_ struct ev_timer *w)	1493	ev_timer_again (EV_P_ ev_timer *w)
1367	{	1494	{
1368	if (ev_is_active (w))	1495	if (ev_is_active (w))
1369	{	1496	{
1370	if (w->repeat)	1497	if (w->repeat)
		1498	{
		1499	((WT)w)->at = mn_now + w->repeat;
1371	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1500	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
		1501	}
1372	else	1502	else
1373	ev_timer_stop (EV_A_ w);	1503	ev_timer_stop (EV_A_ w);
1374	}	1504	}
1375	else if (w->repeat)	1505	else if (w->repeat)
		1506	{
		1507	w->at = w->repeat;
1376	ev_timer_start (EV_A_ w);	1508	ev_timer_start (EV_A_ w);
		1509	}
1377	}	1510	}
1378		1511
1379	#if EV_PERIODICS	1512	#if EV_PERIODIC_ENABLE
1380	void	1513	void
1381	ev_periodic_start (EV_P_ struct ev_periodic *w)	1514	ev_periodic_start (EV_P_ ev_periodic *w)
1382	{	1515	{
1383	if (ev_is_active (w))	1516	if (expect_false (ev_is_active (w)))
1384	return;	1517	return;
1385		1518
1386	if (w->reschedule_cb)	1519	if (w->reschedule_cb)
1387	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1520	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1388	else if (w->interval)	1521	else if (w->interval)
…		…
1391	/* this formula differs from the one in periodic_reify because we do not always round up */	1524	/* this formula differs from the one in periodic_reify because we do not always round up */
1392	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1525	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1393	}	1526	}
1394		1527
1395	ev_start (EV_A_ (W)w, ++periodiccnt);	1528	ev_start (EV_A_ (W)w, ++periodiccnt);
1396	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1529	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1397	periodics [periodiccnt - 1] = w;	1530	periodics [periodiccnt - 1] = w;
1398	upheap ((WT *)periodics, periodiccnt - 1);	1531	upheap ((WT *)periodics, periodiccnt - 1);
1399		1532
1400	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1533	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1401	}	1534	}
1402		1535
1403	void	1536	void
1404	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1537	ev_periodic_stop (EV_P_ ev_periodic *w)
1405	{	1538	{
1406	ev_clear_pending (EV_A_ (W)w);	1539	ev_clear_pending (EV_A_ (W)w);
1407	if (!ev_is_active (w))	1540	if (expect_false (!ev_is_active (w)))
1408	return;	1541	return;
1409		1542
1410	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1543	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1411		1544
1412	if (((W)w)->active < periodiccnt--)	1545	if (expect_true (((W)w)->active < periodiccnt--))
1413	{	1546	{
1414	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1547	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1415	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1548	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1416	}	1549	}
1417		1550
1418	ev_stop (EV_A_ (W)w);	1551	ev_stop (EV_A_ (W)w);
1419	}	1552	}
1420		1553
1421	void	1554	void
1422	ev_periodic_again (EV_P_ struct ev_periodic *w)	1555	ev_periodic_again (EV_P_ ev_periodic *w)
1423	{	1556	{
1424	/* TODO: use adjustheap and recalculation */	1557	/* TODO: use adjustheap and recalculation */
1425	ev_periodic_stop (EV_A_ w);	1558	ev_periodic_stop (EV_A_ w);
1426	ev_periodic_start (EV_A_ w);	1559	ev_periodic_start (EV_A_ w);
1427	}	1560	}
1428	#endif	1561	#endif
1429		1562
1430	void
1431	ev_idle_start (EV_P_ struct ev_idle *w)
1432	{
1433	if (ev_is_active (w))
1434	return;
1435
1436	ev_start (EV_A_ (W)w, ++idlecnt);
1437	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1438	idles [idlecnt - 1] = w;
1439	}
1440
1441	void
1442	ev_idle_stop (EV_P_ struct ev_idle *w)
1443	{
1444	ev_clear_pending (EV_A_ (W)w);
1445	if (ev_is_active (w))
1446	return;
1447
1448	idles [((W)w)->active - 1] = idles [--idlecnt];
1449	ev_stop (EV_A_ (W)w);
1450	}
1451
1452	void
1453	ev_prepare_start (EV_P_ struct ev_prepare *w)
1454	{
1455	if (ev_is_active (w))
1456	return;
1457
1458	ev_start (EV_A_ (W)w, ++preparecnt);
1459	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1460	prepares [preparecnt - 1] = w;
1461	}
1462
1463	void
1464	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1465	{
1466	ev_clear_pending (EV_A_ (W)w);
1467	if (ev_is_active (w))
1468	return;
1469
1470	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1471	ev_stop (EV_A_ (W)w);
1472	}
1473
1474	void
1475	ev_check_start (EV_P_ struct ev_check *w)
1476	{
1477	if (ev_is_active (w))
1478	return;
1479
1480	ev_start (EV_A_ (W)w, ++checkcnt);
1481	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1482	checks [checkcnt - 1] = w;
1483	}
1484
1485	void
1486	ev_check_stop (EV_P_ struct ev_check *w)
1487	{
1488	ev_clear_pending (EV_A_ (W)w);
1489	if (!ev_is_active (w))
1490	return;
1491
1492	checks [((W)w)->active - 1] = checks [--checkcnt];
1493	ev_stop (EV_A_ (W)w);
1494	}
1495
1496	#ifndef SA_RESTART	1563	#ifndef SA_RESTART
1497	# define SA_RESTART 0	1564	# define SA_RESTART 0
1498	#endif	1565	#endif
1499		1566
1500	void	1567	void
1501	ev_signal_start (EV_P_ struct ev_signal *w)	1568	ev_signal_start (EV_P_ ev_signal *w)
1502	{	1569	{
1503	#if EV_MULTIPLICITY	1570	#if EV_MULTIPLICITY
1504	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1571	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1505	#endif	1572	#endif
1506	if (ev_is_active (w))	1573	if (expect_false (ev_is_active (w)))
1507	return;	1574	return;
1508		1575
1509	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1576	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1510		1577
1511	ev_start (EV_A_ (W)w, 1);	1578	ev_start (EV_A_ (W)w, 1);
1512	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1579	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1513	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1580	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1514		1581
1515	if (!((WL)w)->next)	1582	if (!((WL)w)->next)
1516	{	1583	{
1517	#if WIN32	1584	#if _WIN32
1518	signal (w->signum, sighandler);	1585	signal (w->signum, sighandler);
1519	#else	1586	#else
1520	struct sigaction sa;	1587	struct sigaction sa;
1521	sa.sa_handler = sighandler;	1588	sa.sa_handler = sighandler;
1522	sigfillset (&sa.sa_mask);	1589	sigfillset (&sa.sa_mask);
…		…
1525	#endif	1592	#endif
1526	}	1593	}
1527	}	1594	}
1528		1595
1529	void	1596	void
1530	ev_signal_stop (EV_P_ struct ev_signal *w)	1597	ev_signal_stop (EV_P_ ev_signal *w)
1531	{	1598	{
1532	ev_clear_pending (EV_A_ (W)w);	1599	ev_clear_pending (EV_A_ (W)w);
1533	if (!ev_is_active (w))	1600	if (expect_false (!ev_is_active (w)))
1534	return;	1601	return;
1535		1602
1536	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1603	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1537	ev_stop (EV_A_ (W)w);	1604	ev_stop (EV_A_ (W)w);
1538		1605
1539	if (!signals [w->signum - 1].head)	1606	if (!signals [w->signum - 1].head)
1540	signal (w->signum, SIG_DFL);	1607	signal (w->signum, SIG_DFL);
1541	}	1608	}
1542		1609
1543	void	1610	void
1544	ev_child_start (EV_P_ struct ev_child *w)	1611	ev_child_start (EV_P_ ev_child *w)
1545	{	1612	{
1546	#if EV_MULTIPLICITY	1613	#if EV_MULTIPLICITY
1547	assert (("child watchers are only supported in the default loop", loop == default_loop));	1614	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1548	#endif	1615	#endif
1549	if (ev_is_active (w))	1616	if (expect_false (ev_is_active (w)))
1550	return;	1617	return;
1551		1618
1552	ev_start (EV_A_ (W)w, 1);	1619	ev_start (EV_A_ (W)w, 1);
1553	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1620	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1554	}	1621	}
1555		1622
1556	void	1623	void
1557	ev_child_stop (EV_P_ struct ev_child *w)	1624	ev_child_stop (EV_P_ ev_child *w)
1558	{	1625	{
1559	ev_clear_pending (EV_A_ (W)w);	1626	ev_clear_pending (EV_A_ (W)w);
1560	if (!ev_is_active (w))	1627	if (expect_false (!ev_is_active (w)))
1561	return;	1628	return;
1562		1629
1563	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1630	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1564	ev_stop (EV_A_ (W)w);	1631	ev_stop (EV_A_ (W)w);
1565	}	1632	}
1566		1633
		1634	#if EV_STAT_ENABLE
		1635
		1636	# ifdef _WIN32
		1637	# undef lstat
		1638	# define lstat(a,b) _stati64 (a,b)
		1639	# endif
		1640
		1641	#define DEF_STAT_INTERVAL 5.0074891
		1642	#define MIN_STAT_INTERVAL 0.1074891
		1643
		1644	void
		1645	ev_stat_stat (EV_P_ ev_stat *w)
		1646	{
		1647	if (lstat (w->path, &w->attr) < 0)
		1648	w->attr.st_nlink = 0;
		1649	else if (!w->attr.st_nlink)
		1650	w->attr.st_nlink = 1;
		1651	}
		1652
		1653	static void
		1654	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1655	{
		1656	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1657
		1658	/* we copy this here each the time so that */
		1659	/* prev has the old value when the callback gets invoked */
		1660	w->prev = w->attr;
		1661	ev_stat_stat (EV_A_ w);
		1662
		1663	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1664	ev_feed_event (EV_A_ w, EV_STAT);
		1665	}
		1666
		1667	void
		1668	ev_stat_start (EV_P_ ev_stat *w)
		1669	{
		1670	if (expect_false (ev_is_active (w)))
		1671	return;
		1672
		1673	/* since we use memcmp, we need to clear any padding data etc. */
		1674	memset (&w->prev, 0, sizeof (ev_statdata));
		1675	memset (&w->attr, 0, sizeof (ev_statdata));
		1676
		1677	ev_stat_stat (EV_A_ w);
		1678
		1679	if (w->interval < MIN_STAT_INTERVAL)
		1680	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1681
		1682	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1683	ev_set_priority (&w->timer, ev_priority (w));
		1684	ev_timer_start (EV_A_ &w->timer);
		1685
		1686	ev_start (EV_A_ (W)w, 1);
		1687	}
		1688
		1689	void
		1690	ev_stat_stop (EV_P_ ev_stat *w)
		1691	{
		1692	ev_clear_pending (EV_A_ (W)w);
		1693	if (expect_false (!ev_is_active (w)))
		1694	return;
		1695
		1696	ev_timer_stop (EV_A_ &w->timer);
		1697
		1698	ev_stop (EV_A_ (W)w);
		1699	}
		1700	#endif
		1701
		1702	void
		1703	ev_idle_start (EV_P_ ev_idle *w)
		1704	{
		1705	if (expect_false (ev_is_active (w)))
		1706	return;
		1707
		1708	ev_start (EV_A_ (W)w, ++idlecnt);
		1709	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1710	idles [idlecnt - 1] = w;
		1711	}
		1712
		1713	void
		1714	ev_idle_stop (EV_P_ ev_idle *w)
		1715	{
		1716	ev_clear_pending (EV_A_ (W)w);
		1717	if (expect_false (!ev_is_active (w)))
		1718	return;
		1719
		1720	{
		1721	int active = ((W)w)->active;
		1722	idles [active - 1] = idles [--idlecnt];
		1723	((W)idles [active - 1])->active = active;
		1724	}
		1725
		1726	ev_stop (EV_A_ (W)w);
		1727	}
		1728
		1729	void
		1730	ev_prepare_start (EV_P_ ev_prepare *w)
		1731	{
		1732	if (expect_false (ev_is_active (w)))
		1733	return;
		1734
		1735	ev_start (EV_A_ (W)w, ++preparecnt);
		1736	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1737	prepares [preparecnt - 1] = w;
		1738	}
		1739
		1740	void
		1741	ev_prepare_stop (EV_P_ ev_prepare *w)
		1742	{
		1743	ev_clear_pending (EV_A_ (W)w);
		1744	if (expect_false (!ev_is_active (w)))
		1745	return;
		1746
		1747	{
		1748	int active = ((W)w)->active;
		1749	prepares [active - 1] = prepares [--preparecnt];
		1750	((W)prepares [active - 1])->active = active;
		1751	}
		1752
		1753	ev_stop (EV_A_ (W)w);
		1754	}
		1755
		1756	void
		1757	ev_check_start (EV_P_ ev_check *w)
		1758	{
		1759	if (expect_false (ev_is_active (w)))
		1760	return;
		1761
		1762	ev_start (EV_A_ (W)w, ++checkcnt);
		1763	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1764	checks [checkcnt - 1] = w;
		1765	}
		1766
		1767	void
		1768	ev_check_stop (EV_P_ ev_check *w)
		1769	{
		1770	ev_clear_pending (EV_A_ (W)w);
		1771	if (expect_false (!ev_is_active (w)))
		1772	return;
		1773
		1774	{
		1775	int active = ((W)w)->active;
		1776	checks [active - 1] = checks [--checkcnt];
		1777	((W)checks [active - 1])->active = active;
		1778	}
		1779
		1780	ev_stop (EV_A_ (W)w);
		1781	}
		1782
		1783	#if EV_EMBED_ENABLE
		1784	void noinline
		1785	ev_embed_sweep (EV_P_ ev_embed *w)
		1786	{
		1787	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1788	}
		1789
		1790	static void
		1791	embed_cb (EV_P_ ev_io *io, int revents)
		1792	{
		1793	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		1794
		1795	if (ev_cb (w))
		1796	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1797	else
		1798	ev_embed_sweep (loop, w);
		1799	}
		1800
		1801	void
		1802	ev_embed_start (EV_P_ ev_embed *w)
		1803	{
		1804	if (expect_false (ev_is_active (w)))
		1805	return;
		1806
		1807	{
		1808	struct ev_loop *loop = w->loop;
		1809	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1810	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1811	}
		1812
		1813	ev_set_priority (&w->io, ev_priority (w));
		1814	ev_io_start (EV_A_ &w->io);
		1815
		1816	ev_start (EV_A_ (W)w, 1);
		1817	}
		1818
		1819	void
		1820	ev_embed_stop (EV_P_ ev_embed *w)
		1821	{
		1822	ev_clear_pending (EV_A_ (W)w);
		1823	if (expect_false (!ev_is_active (w)))
		1824	return;
		1825
		1826	ev_io_stop (EV_A_ &w->io);
		1827
		1828	ev_stop (EV_A_ (W)w);
		1829	}
		1830	#endif
		1831
1567	/*****************************************************************************/	1832	/*****************************************************************************/
1568		1833
1569	struct ev_once	1834	struct ev_once
1570	{	1835	{
1571	struct ev_io io;	1836	ev_io io;
1572	struct ev_timer to;	1837	ev_timer to;
1573	void (*cb)(int revents, void *arg);	1838	void (*cb)(int revents, void *arg);
1574	void *arg;	1839	void *arg;
1575	};	1840	};
1576		1841
1577	static void	1842	static void
…		…
1586		1851
1587	cb (revents, arg);	1852	cb (revents, arg);
1588	}	1853	}
1589		1854
1590	static void	1855	static void
1591	once_cb_io (EV_P_ struct ev_io *w, int revents)	1856	once_cb_io (EV_P_ ev_io *w, int revents)
1592	{	1857	{
1593	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1858	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1594	}	1859	}
1595		1860
1596	static void	1861	static void
1597	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1862	once_cb_to (EV_P_ ev_timer *w, int revents)
1598	{	1863	{
1599	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1864	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1600	}	1865	}
1601		1866
1602	void	1867	void
1603	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1868	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1604	{	1869	{
1605	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	1870	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1606		1871
1607	if (!once)	1872	if (expect_false (!once))
		1873	{
1608	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1874	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1609	else	1875	return;
1610	{	1876	}
		1877
1611	once->cb = cb;	1878	once->cb = cb;
1612	once->arg = arg;	1879	once->arg = arg;
1613		1880
1614	ev_init (&once->io, once_cb_io);	1881	ev_init (&once->io, once_cb_io);
1615	if (fd >= 0)	1882	if (fd >= 0)
1616	{	1883	{
1617	ev_io_set (&once->io, fd, events);	1884	ev_io_set (&once->io, fd, events);
1618	ev_io_start (EV_A_ &once->io);	1885	ev_io_start (EV_A_ &once->io);
1619	}	1886	}
1620		1887
1621	ev_init (&once->to, once_cb_to);	1888	ev_init (&once->to, once_cb_to);
1622	if (timeout >= 0.)	1889	if (timeout >= 0.)
1623	{	1890	{
1624	ev_timer_set (&once->to, timeout, 0.);	1891	ev_timer_set (&once->to, timeout, 0.);
1625	ev_timer_start (EV_A_ &once->to);	1892	ev_timer_start (EV_A_ &once->to);
1626	}
1627	}	1893	}
1628	}	1894	}
1629		1895
1630	#ifdef __cplusplus	1896	#ifdef __cplusplus
1631	}	1897	}

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