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Comparing libev/ev.c (file contents):
Revision 1.95 by root, Sun Nov 11 01:42:13 2007 UTC vs.
Revision 1.141 by root, Mon Nov 26 20:33:58 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)
147	# define inline static	202	# define inline_speed static
		203	# define inline_minimal 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
…		…
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	#ifndef WCONTINUED
656	# define WCONTINUED 0	721	# define WCONTINUED 0
657	#endif	722	#endif
658		723
659	static void	724	void inline_speed
660	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	725	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
661	{	726	{
662	struct ev_child *w;	727	ev_child *w;
663		728
664	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	729	for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
665	if (w->pid == pid || !w->pid)	730	if (w->pid == pid || !w->pid)
666	{	731	{
667	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	732	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
668	w->rpid = pid;	733	w->rpid = pid;
669	w->rstatus = status;	734	w->rstatus = status;
670	ev_feed_event (EV_A_ (W)w, EV_CHILD);	735	ev_feed_event (EV_A_ (W)w, EV_CHILD);
671	}	736	}
672	}	737	}
673		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
679	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	744	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
680	{	745	{
681	/* make sure we are called again until all childs have been reaped */	746	/* make sure we are called again until all childs have been reaped */
		747	/* 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);	748	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
683		749
684	child_reap (EV_A_ sw, pid, pid, status);	750	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 */	751	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
686	}	752	}
687	}	753	}
688		754
689	#endif	755	#endif
690		756
691	/*****************************************************************************/	757	/*****************************************************************************/
692		758
		759	#if EV_USE_PORT
		760	# include "ev_port.c"
		761	#endif
693	#if EV_USE_KQUEUE	762	#if EV_USE_KQUEUE
694	# include "ev_kqueue.c"	763	# include "ev_kqueue.c"
695	#endif	764	#endif
696	#if EV_USE_EPOLL	765	#if EV_USE_EPOLL
697	# include "ev_epoll.c"	766	# include "ev_epoll.c"
…		…
714	{	783	{
715	return EV_VERSION_MINOR;	784	return EV_VERSION_MINOR;
716	}	785	}
717		786
718	/* return true if we are running with elevated privileges and should ignore env variables */	787	/* return true if we are running with elevated privileges and should ignore env variables */
719	static int	788	int inline_size
720	enable_secure (void)	789	enable_secure (void)
721	{	790	{
722	#ifdef WIN32	791	#ifdef _WIN32
723	return 0;	792	return 0;
724	#else	793	#else
725	return getuid () != geteuid ()	794	return getuid () != geteuid ()
726	|| getgid () != getegid ();	795	|| getgid () != getegid ();
727	#endif	796	#endif
728	}	797	}
729		798
730	int	799	unsigned int
731	ev_method (EV_P)	800	ev_supported_backends (void)
732	{	801	{
733	return method;	802	unsigned int flags = 0;
		803
		804	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		805	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		806	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		807	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		808	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		809
		810	return flags;
		811	}
		812
		813	unsigned int
		814	ev_recommended_backends (void)
		815	{
		816	unsigned int flags = ev_supported_backends ();
		817
		818	#ifndef __NetBSD__
		819	/* kqueue is borked on everything but netbsd apparently */
		820	/* it usually doesn't work correctly on anything but sockets and pipes */
		821	flags &= ~EVBACKEND_KQUEUE;
		822	#endif
		823	#ifdef __APPLE__
		824	// flags &= ~EVBACKEND_KQUEUE; for documentation
		825	flags &= ~EVBACKEND_POLL;
		826	#endif
		827
		828	return flags;
		829	}
		830
		831	unsigned int
		832	ev_embeddable_backends (void)
		833	{
		834	return EVBACKEND_EPOLL
		835	| EVBACKEND_KQUEUE
		836	| EVBACKEND_PORT;
		837	}
		838
		839	unsigned int
		840	ev_backend (EV_P)
		841	{
		842	return backend;
734	}	843	}
735		844
736	static void	845	static void
737	loop_init (EV_P_ int methods)	846	loop_init (EV_P_ unsigned int flags)
738	{	847	{
739	if (!method)	848	if (!backend)
740	{	849	{
741	#if EV_USE_MONOTONIC	850	#if EV_USE_MONOTONIC
742	{	851	{
743	struct timespec ts;	852	struct timespec ts;
744	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	853	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
749	ev_rt_now = ev_time ();	858	ev_rt_now = ev_time ();
750	mn_now = get_clock ();	859	mn_now = get_clock ();
751	now_floor = mn_now;	860	now_floor = mn_now;
752	rtmn_diff = ev_rt_now - mn_now;	861	rtmn_diff = ev_rt_now - mn_now;
753		862
754	if (methods == EVMETHOD_AUTO)	863	if (!(flags & EVFLAG_NOENV)
755	if (!enable_secure () && getenv ("LIBEV_METHODS"))	864	&& !enable_secure ()
		865	&& getenv ("LIBEV_FLAGS"))
756	methods = atoi (getenv ("LIBEV_METHODS"));	866	flags = atoi (getenv ("LIBEV_FLAGS"));
757	else
758	methods = EVMETHOD_ANY;
759		867
760	method = 0;	868	if (!(flags & 0x0000ffffUL))
761	#if EV_USE_WIN32	869	flags |= ev_recommended_backends ();
762	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	870
		871	backend = 0;
		872	#if EV_USE_PORT
		873	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
763	#endif	874	#endif
764	#if EV_USE_KQUEUE	875	#if EV_USE_KQUEUE
765	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	876	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
766	#endif	877	#endif
767	#if EV_USE_EPOLL	878	#if EV_USE_EPOLL
768	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	879	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
769	#endif	880	#endif
770	#if EV_USE_POLL	881	#if EV_USE_POLL
771	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	882	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
772	#endif	883	#endif
773	#if EV_USE_SELECT	884	#if EV_USE_SELECT
774	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	885	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
775	#endif	886	#endif
776		887
777	ev_init (&sigev, sigcb);	888	ev_init (&sigev, sigcb);
778	ev_set_priority (&sigev, EV_MAXPRI);	889	ev_set_priority (&sigev, EV_MAXPRI);
779	}	890	}
780	}	891	}
781		892
782	void	893	static void
783	loop_destroy (EV_P)	894	loop_destroy (EV_P)
784	{	895	{
785	int i;	896	int i;
786		897
787	#if EV_USE_WIN32	898	#if EV_USE_PORT
788	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	899	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
789	#endif	900	#endif
790	#if EV_USE_KQUEUE	901	#if EV_USE_KQUEUE
791	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	902	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
792	#endif	903	#endif
793	#if EV_USE_EPOLL	904	#if EV_USE_EPOLL
794	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	905	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
795	#endif	906	#endif
796	#if EV_USE_POLL	907	#if EV_USE_POLL
797	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	908	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
798	#endif	909	#endif
799	#if EV_USE_SELECT	910	#if EV_USE_SELECT
800	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	911	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
801	#endif	912	#endif
802		913
803	for (i = NUMPRI; i--; )	914	for (i = NUMPRI; i--; )
804	array_free (pending, [i]);	915	array_free (pending, [i]);
805		916
806	/* have to use the microsoft-never-gets-it-right macro */	917	/* have to use the microsoft-never-gets-it-right macro */
807	array_free_microshit (fdchange);	918	array_free (fdchange, EMPTY0);
808	array_free_microshit (timer);	919	array_free (timer, EMPTY0);
809	#if EV_PERIODICS	920	#if EV_PERIODIC_ENABLE
810	array_free_microshit (periodic);	921	array_free (periodic, EMPTY0);
811	#endif	922	#endif
812	array_free_microshit (idle);	923	array_free (idle, EMPTY0);
813	array_free_microshit (prepare);	924	array_free (prepare, EMPTY0);
814	array_free_microshit (check);	925	array_free (check, EMPTY0);
815		926
816	method = 0;	927	backend = 0;
817	}	928	}
818		929
819	static void	930	static void
820	loop_fork (EV_P)	931	loop_fork (EV_P)
821	{	932	{
		933	#if EV_USE_PORT
		934	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		935	#endif
		936	#if EV_USE_KQUEUE
		937	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		938	#endif
822	#if EV_USE_EPOLL	939	#if EV_USE_EPOLL
823	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	940	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
824	#endif
825	#if EV_USE_KQUEUE
826	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
827	#endif	941	#endif
828		942
829	if (ev_is_active (&sigev))	943	if (ev_is_active (&sigev))
830	{	944	{
831	/* default loop */	945	/* default loop */
…		…
844	postfork = 0;	958	postfork = 0;
845	}	959	}
846		960
847	#if EV_MULTIPLICITY	961	#if EV_MULTIPLICITY
848	struct ev_loop *	962	struct ev_loop *
849	ev_loop_new (int methods)	963	ev_loop_new (unsigned int flags)
850	{	964	{
851	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	965	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
852		966
853	memset (loop, 0, sizeof (struct ev_loop));	967	memset (loop, 0, sizeof (struct ev_loop));
854		968
855	loop_init (EV_A_ methods);	969	loop_init (EV_A_ flags);
856		970
857	if (ev_method (EV_A))	971	if (ev_backend (EV_A))
858	return loop;	972	return loop;
859		973
860	return 0;	974	return 0;
861	}	975	}
862		976
…		…
875		989
876	#endif	990	#endif
877		991
878	#if EV_MULTIPLICITY	992	#if EV_MULTIPLICITY
879	struct ev_loop *	993	struct ev_loop *
		994	ev_default_loop_init (unsigned int flags)
880	#else	995	#else
881	int	996	int
		997	ev_default_loop (unsigned int flags)
882	#endif	998	#endif
883	ev_default_loop (int methods)
884	{	999	{
885	if (sigpipe [0] == sigpipe [1])	1000	if (sigpipe [0] == sigpipe [1])
886	if (pipe (sigpipe))	1001	if (pipe (sigpipe))
887	return 0;	1002	return 0;
888		1003
889	if (!default_loop)	1004	if (!ev_default_loop_ptr)
890	{	1005	{
891	#if EV_MULTIPLICITY	1006	#if EV_MULTIPLICITY
892	struct ev_loop *loop = default_loop = &default_loop_struct;	1007	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
893	#else	1008	#else
894	default_loop = 1;	1009	ev_default_loop_ptr = 1;
895	#endif	1010	#endif
896		1011
897	loop_init (EV_A_ methods);	1012	loop_init (EV_A_ flags);
898		1013
899	if (ev_method (EV_A))	1014	if (ev_backend (EV_A))
900	{	1015	{
901	siginit (EV_A);	1016	siginit (EV_A);
902		1017
903	#ifndef WIN32	1018	#ifndef _WIN32
904	ev_signal_init (&childev, childcb, SIGCHLD);	1019	ev_signal_init (&childev, childcb, SIGCHLD);
905	ev_set_priority (&childev, EV_MAXPRI);	1020	ev_set_priority (&childev, EV_MAXPRI);
906	ev_signal_start (EV_A_ &childev);	1021	ev_signal_start (EV_A_ &childev);
907	ev_unref (EV_A); /* child watcher should not keep loop alive */	1022	ev_unref (EV_A); /* child watcher should not keep loop alive */
908	#endif	1023	#endif
909	}	1024	}
910	else	1025	else
911	default_loop = 0;	1026	ev_default_loop_ptr = 0;
912	}	1027	}
913		1028
914	return default_loop;	1029	return ev_default_loop_ptr;
915	}	1030	}
916		1031
917	void	1032	void
918	ev_default_destroy (void)	1033	ev_default_destroy (void)
919	{	1034	{
920	#if EV_MULTIPLICITY	1035	#if EV_MULTIPLICITY
921	struct ev_loop *loop = default_loop;	1036	struct ev_loop *loop = ev_default_loop_ptr;
922	#endif	1037	#endif
923		1038
924	#ifndef WIN32	1039	#ifndef _WIN32
925	ev_ref (EV_A); /* child watcher */	1040	ev_ref (EV_A); /* child watcher */
926	ev_signal_stop (EV_A_ &childev);	1041	ev_signal_stop (EV_A_ &childev);
927	#endif	1042	#endif
928		1043
929	ev_ref (EV_A); /* signal watcher */	1044	ev_ref (EV_A); /* signal watcher */
…		…
937		1052
938	void	1053	void
939	ev_default_fork (void)	1054	ev_default_fork (void)
940	{	1055	{
941	#if EV_MULTIPLICITY	1056	#if EV_MULTIPLICITY
942	struct ev_loop *loop = default_loop;	1057	struct ev_loop *loop = ev_default_loop_ptr;
943	#endif	1058	#endif
944		1059
945	if (method)	1060	if (backend)
946	postfork = 1;	1061	postfork = 1;
947	}	1062	}
948		1063
949	/*****************************************************************************/	1064	/*****************************************************************************/
950		1065
951	static int	1066	int inline_size
952	any_pending (EV_P)	1067	any_pending (EV_P)
953	{	1068	{
954	int pri;	1069	int pri;
955		1070
956	for (pri = NUMPRI; pri--; )	1071	for (pri = NUMPRI; pri--; )
…		…
958	return 1;	1073	return 1;
959		1074
960	return 0;	1075	return 0;
961	}	1076	}
962		1077
963	static void	1078	void inline_speed
964	call_pending (EV_P)	1079	call_pending (EV_P)
965	{	1080	{
966	int pri;	1081	int pri;
967		1082
968	for (pri = NUMPRI; pri--; )	1083	for (pri = NUMPRI; pri--; )
969	while (pendingcnt [pri])	1084	while (pendingcnt [pri])
970	{	1085	{
971	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1086	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
972		1087
973	if (p->w)	1088	if (expect_true (p->w))
974	{	1089	{
		1090	assert (("non-pending watcher on pending list", p->w->pending));
		1091
975	p->w->pending = 0;	1092	p->w->pending = 0;
976	EV_CB_INVOKE (p->w, p->events);	1093	EV_CB_INVOKE (p->w, p->events);
977	}	1094	}
978	}	1095	}
979	}	1096	}
980		1097
981	static void	1098	void inline_size
982	timers_reify (EV_P)	1099	timers_reify (EV_P)
983	{	1100	{
984	while (timercnt && ((WT)timers [0])->at <= mn_now)	1101	while (timercnt && ((WT)timers [0])->at <= mn_now)
985	{	1102	{
986	struct ev_timer *w = timers [0];	1103	ev_timer *w = timers [0];
987		1104
988	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1105	assert (("inactive timer on timer heap detected", ev_is_active (w)));
989		1106
990	/* first reschedule or stop timer */	1107	/* first reschedule or stop timer */
991	if (w->repeat)	1108	if (w->repeat)
…		…
1003		1120
1004	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1121	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1005	}	1122	}
1006	}	1123	}
1007		1124
1008	#if EV_PERIODICS	1125	#if EV_PERIODIC_ENABLE
1009	static void	1126	void inline_size
1010	periodics_reify (EV_P)	1127	periodics_reify (EV_P)
1011	{	1128	{
1012	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1129	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1013	{	1130	{
1014	struct ev_periodic *w = periodics [0];	1131	ev_periodic *w = periodics [0];
1015		1132
1016	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1133	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1017		1134
1018	/* first reschedule or stop timer */	1135	/* first reschedule or stop timer */
1019	if (w->reschedule_cb)	1136	if (w->reschedule_cb)
1020	{	1137	{
1021	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1138	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1022
1023	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1139	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1024	downheap ((WT *)periodics, periodiccnt, 0);	1140	downheap ((WT *)periodics, periodiccnt, 0);
1025	}	1141	}
1026	else if (w->interval)	1142	else if (w->interval)
1027	{	1143	{
…		…
1034		1150
1035	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1151	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1036	}	1152	}
1037	}	1153	}
1038		1154
1039	static void	1155	static void noinline
1040	periodics_reschedule (EV_P)	1156	periodics_reschedule (EV_P)
1041	{	1157	{
1042	int i;	1158	int i;
1043		1159
1044	/* adjust periodics after time jump */	1160	/* adjust periodics after time jump */
1045	for (i = 0; i < periodiccnt; ++i)	1161	for (i = 0; i < periodiccnt; ++i)
1046	{	1162	{
1047	struct ev_periodic *w = periodics [i];	1163	ev_periodic *w = periodics [i];
1048		1164
1049	if (w->reschedule_cb)	1165	if (w->reschedule_cb)
1050	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1166	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1051	else if (w->interval)	1167	else if (w->interval)
1052	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1168	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
…		…
1056	for (i = periodiccnt >> 1; i--; )	1172	for (i = periodiccnt >> 1; i--; )
1057	downheap ((WT *)periodics, periodiccnt, i);	1173	downheap ((WT *)periodics, periodiccnt, i);
1058	}	1174	}
1059	#endif	1175	#endif
1060		1176
1061	inline int	1177	int inline_size
1062	time_update_monotonic (EV_P)	1178	time_update_monotonic (EV_P)
1063	{	1179	{
1064	mn_now = get_clock ();	1180	mn_now = get_clock ();
1065		1181
1066	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1182	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
…		…
1074	ev_rt_now = ev_time ();	1190	ev_rt_now = ev_time ();
1075	return 1;	1191	return 1;
1076	}	1192	}
1077	}	1193	}
1078		1194
1079	static void	1195	void inline_size
1080	time_update (EV_P)	1196	time_update (EV_P)
1081	{	1197	{
1082	int i;	1198	int i;
1083		1199
1084	#if EV_USE_MONOTONIC	1200	#if EV_USE_MONOTONIC
…		…
1086	{	1202	{
1087	if (time_update_monotonic (EV_A))	1203	if (time_update_monotonic (EV_A))
1088	{	1204	{
1089	ev_tstamp odiff = rtmn_diff;	1205	ev_tstamp odiff = rtmn_diff;
1090		1206
1091	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1207	/* loop a few times, before making important decisions.
		1208	* on the choice of "4": one iteration isn't enough,
		1209	* in case we get preempted during the calls to
		1210	* ev_time and get_clock. a second call is almost guarenteed
		1211	* to succeed in that case, though. and looping a few more times
		1212	* doesn't hurt either as we only do this on time-jumps or
		1213	* in the unlikely event of getting preempted here.
		1214	*/
		1215	for (i = 4; --i; )
1092	{	1216	{
1093	rtmn_diff = ev_rt_now - mn_now;	1217	rtmn_diff = ev_rt_now - mn_now;
1094		1218
1095	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1219	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1096	return; /* all is well */	1220	return; /* all is well */
…		…
1098	ev_rt_now = ev_time ();	1222	ev_rt_now = ev_time ();
1099	mn_now = get_clock ();	1223	mn_now = get_clock ();
1100	now_floor = mn_now;	1224	now_floor = mn_now;
1101	}	1225	}
1102		1226
1103	# if EV_PERIODICS	1227	# if EV_PERIODIC_ENABLE
1104	periodics_reschedule (EV_A);	1228	periodics_reschedule (EV_A);
1105	# endif	1229	# endif
1106	/* no timer adjustment, as the monotonic clock doesn't jump */	1230	/* no timer adjustment, as the monotonic clock doesn't jump */
1107	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1231	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1108	}	1232	}
…		…
1112	{	1236	{
1113	ev_rt_now = ev_time ();	1237	ev_rt_now = ev_time ();
1114		1238
1115	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1239	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1116	{	1240	{
1117	#if EV_PERIODICS	1241	#if EV_PERIODIC_ENABLE
1118	periodics_reschedule (EV_A);	1242	periodics_reschedule (EV_A);
1119	#endif	1243	#endif
1120		1244
1121	/* adjust timers. this is easy, as the offset is the same for all */	1245	/* adjust timers. this is easy, as the offset is the same for all */
1122	for (i = 0; i < timercnt; ++i)	1246	for (i = 0; i < timercnt; ++i)
…		…
1142	static int loop_done;	1266	static int loop_done;
1143		1267
1144	void	1268	void
1145	ev_loop (EV_P_ int flags)	1269	ev_loop (EV_P_ int flags)
1146	{	1270	{
1147	double block;
1148	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1271	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1272	? EVUNLOOP_ONE
		1273	: EVUNLOOP_CANCEL;
1149		1274
1150	do	1275	while (activecnt)
1151	{	1276	{
1152	/* queue check watchers (and execute them) */	1277	/* queue check watchers (and execute them) */
1153	if (expect_false (preparecnt))	1278	if (expect_false (preparecnt))
1154	{	1279	{
1155	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1280	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1162		1287
1163	/* update fd-related kernel structures */	1288	/* update fd-related kernel structures */
1164	fd_reify (EV_A);	1289	fd_reify (EV_A);
1165		1290
1166	/* calculate blocking time */	1291	/* calculate blocking time */
		1292	{
		1293	double block;
1167		1294
1168	/* we only need this for !monotonic clock or timers, but as we basically	1295	if (flags & EVLOOP_NONBLOCK || idlecnt)
1169	always have timers, we just calculate it always */	1296	block = 0.; /* do not block at all */
		1297	else
		1298	{
		1299	/* update time to cancel out callback processing overhead */
1170	#if EV_USE_MONOTONIC	1300	#if EV_USE_MONOTONIC
1171	if (expect_true (have_monotonic))	1301	if (expect_true (have_monotonic))
1172	time_update_monotonic (EV_A);	1302	time_update_monotonic (EV_A);
1173	else	1303	else
1174	#endif	1304	#endif
1175	{	1305	{
1176	ev_rt_now = ev_time ();	1306	ev_rt_now = ev_time ();
1177	mn_now = ev_rt_now;	1307	mn_now = ev_rt_now;
1178	}	1308	}
1179		1309
1180	if (flags & EVLOOP_NONBLOCK || idlecnt)
1181	block = 0.;
1182	else
1183	{
1184	block = MAX_BLOCKTIME;	1310	block = MAX_BLOCKTIME;
1185		1311
1186	if (timercnt)	1312	if (timercnt)
1187	{	1313	{
1188	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1314	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1189	if (block > to) block = to;	1315	if (block > to) block = to;
1190	}	1316	}
1191		1317
1192	#if EV_PERIODICS	1318	#if EV_PERIODIC_ENABLE
1193	if (periodiccnt)	1319	if (periodiccnt)
1194	{	1320	{
1195	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1321	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1196	if (block > to) block = to;	1322	if (block > to) block = to;
1197	}	1323	}
1198	#endif	1324	#endif
1199		1325
1200	if (block < 0.) block = 0.;	1326	if (expect_false (block < 0.)) block = 0.;
1201	}	1327	}
1202		1328
1203	method_poll (EV_A_ block);	1329	backend_poll (EV_A_ block);
		1330	}
1204		1331
1205	/* update ev_rt_now, do magic */	1332	/* update ev_rt_now, do magic */
1206	time_update (EV_A);	1333	time_update (EV_A);
1207		1334
1208	/* queue pending timers and reschedule them */	1335	/* queue pending timers and reschedule them */
1209	timers_reify (EV_A); /* relative timers called last */	1336	timers_reify (EV_A); /* relative timers called last */
1210	#if EV_PERIODICS	1337	#if EV_PERIODIC_ENABLE
1211	periodics_reify (EV_A); /* absolute timers called first */	1338	periodics_reify (EV_A); /* absolute timers called first */
1212	#endif	1339	#endif
1213		1340
1214	/* queue idle watchers unless io or timers are pending */	1341	/* queue idle watchers unless other events are pending */
1215	if (idlecnt && !any_pending (EV_A))	1342	if (idlecnt && !any_pending (EV_A))
1216	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1343	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1217		1344
1218	/* queue check watchers, to be executed first */	1345	/* queue check watchers, to be executed first */
1219	if (checkcnt)	1346	if (expect_false (checkcnt))
1220	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1347	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1221		1348
1222	call_pending (EV_A);	1349	call_pending (EV_A);
1223	}
1224	while (activecnt && !loop_done);
1225		1350
1226	if (loop_done != 2)	1351	if (expect_false (loop_done))
1227	loop_done = 0;	1352	break;
		1353	}
		1354
		1355	if (loop_done == EVUNLOOP_ONE)
		1356	loop_done = EVUNLOOP_CANCEL;
1228	}	1357	}
1229		1358
1230	void	1359	void
1231	ev_unloop (EV_P_ int how)	1360	ev_unloop (EV_P_ int how)
1232	{	1361	{
1233	loop_done = how;	1362	loop_done = how;
1234	}	1363	}
1235		1364
1236	/*****************************************************************************/	1365	/*****************************************************************************/
1237		1366
1238	inline void	1367	void inline_size
1239	wlist_add (WL *head, WL elem)	1368	wlist_add (WL *head, WL elem)
1240	{	1369	{
1241	elem->next = *head;	1370	elem->next = *head;
1242	*head = elem;	1371	*head = elem;
1243	}	1372	}
1244		1373
1245	inline void	1374	void inline_size
1246	wlist_del (WL *head, WL elem)	1375	wlist_del (WL *head, WL elem)
1247	{	1376	{
1248	while (*head)	1377	while (*head)
1249	{	1378	{
1250	if (*head == elem)	1379	if (*head == elem)
…		…
1255		1384
1256	head = &(*head)->next;	1385	head = &(*head)->next;
1257	}	1386	}
1258	}	1387	}
1259		1388
1260	inline void	1389	void inline_speed
1261	ev_clear_pending (EV_P_ W w)	1390	ev_clear_pending (EV_P_ W w)
1262	{	1391	{
1263	if (w->pending)	1392	if (w->pending)
1264	{	1393	{
1265	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1394	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1266	w->pending = 0;	1395	w->pending = 0;
1267	}	1396	}
1268	}	1397	}
1269		1398
1270	inline void	1399	void inline_speed
1271	ev_start (EV_P_ W w, int active)	1400	ev_start (EV_P_ W w, int active)
1272	{	1401	{
1273	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1402	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1274	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1403	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1275		1404
1276	w->active = active;	1405	w->active = active;
1277	ev_ref (EV_A);	1406	ev_ref (EV_A);
1278	}	1407	}
1279		1408
1280	inline void	1409	void inline_size
1281	ev_stop (EV_P_ W w)	1410	ev_stop (EV_P_ W w)
1282	{	1411	{
1283	ev_unref (EV_A);	1412	ev_unref (EV_A);
1284	w->active = 0;	1413	w->active = 0;
1285	}	1414	}
1286		1415
1287	/*****************************************************************************/	1416	/*****************************************************************************/
1288		1417
1289	void	1418	void
1290	ev_io_start (EV_P_ struct ev_io *w)	1419	ev_io_start (EV_P_ ev_io *w)
1291	{	1420	{
1292	int fd = w->fd;	1421	int fd = w->fd;
1293		1422
1294	if (ev_is_active (w))	1423	if (expect_false (ev_is_active (w)))
1295	return;	1424	return;
1296		1425
1297	assert (("ev_io_start called with negative fd", fd >= 0));	1426	assert (("ev_io_start called with negative fd", fd >= 0));
1298		1427
1299	ev_start (EV_A_ (W)w, 1);	1428	ev_start (EV_A_ (W)w, 1);
…		…
1302		1431
1303	fd_change (EV_A_ fd);	1432	fd_change (EV_A_ fd);
1304	}	1433	}
1305		1434
1306	void	1435	void
1307	ev_io_stop (EV_P_ struct ev_io *w)	1436	ev_io_stop (EV_P_ ev_io *w)
1308	{	1437	{
1309	ev_clear_pending (EV_A_ (W)w);	1438	ev_clear_pending (EV_A_ (W)w);
1310	if (!ev_is_active (w))	1439	if (expect_false (!ev_is_active (w)))
1311	return;	1440	return;
1312		1441
1313	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1442	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1314		1443
1315	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1444	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
…		…
1317		1446
1318	fd_change (EV_A_ w->fd);	1447	fd_change (EV_A_ w->fd);
1319	}	1448	}
1320		1449
1321	void	1450	void
1322	ev_timer_start (EV_P_ struct ev_timer *w)	1451	ev_timer_start (EV_P_ ev_timer *w)
1323	{	1452	{
1324	if (ev_is_active (w))	1453	if (expect_false (ev_is_active (w)))
1325	return;	1454	return;
1326		1455
1327	((WT)w)->at += mn_now;	1456	((WT)w)->at += mn_now;
1328		1457
1329	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1458	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1330		1459
1331	ev_start (EV_A_ (W)w, ++timercnt);	1460	ev_start (EV_A_ (W)w, ++timercnt);
1332	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1461	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1333	timers [timercnt - 1] = w;	1462	timers [timercnt - 1] = w;
1334	upheap ((WT *)timers, timercnt - 1);	1463	upheap ((WT *)timers, timercnt - 1);
1335		1464
1336	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1465	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1337	}	1466	}
1338		1467
1339	void	1468	void
1340	ev_timer_stop (EV_P_ struct ev_timer *w)	1469	ev_timer_stop (EV_P_ ev_timer *w)
1341	{	1470	{
1342	ev_clear_pending (EV_A_ (W)w);	1471	ev_clear_pending (EV_A_ (W)w);
1343	if (!ev_is_active (w))	1472	if (expect_false (!ev_is_active (w)))
1344	return;	1473	return;
1345		1474
1346	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1475	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1347		1476
1348	if (((W)w)->active < timercnt--)	1477	if (expect_true (((W)w)->active < timercnt--))
1349	{	1478	{
1350	timers [((W)w)->active - 1] = timers [timercnt];	1479	timers [((W)w)->active - 1] = timers [timercnt];
1351	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1480	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1352	}	1481	}
1353		1482
1354	((WT)w)->at -= mn_now;	1483	((WT)w)->at -= mn_now;
1355		1484
1356	ev_stop (EV_A_ (W)w);	1485	ev_stop (EV_A_ (W)w);
1357	}	1486	}
1358		1487
1359	void	1488	void
1360	ev_timer_again (EV_P_ struct ev_timer *w)	1489	ev_timer_again (EV_P_ ev_timer *w)
1361	{	1490	{
1362	if (ev_is_active (w))	1491	if (ev_is_active (w))
1363	{	1492	{
1364	if (w->repeat)	1493	if (w->repeat)
		1494	{
		1495	((WT)w)->at = mn_now + w->repeat;
1365	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1496	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
		1497	}
1366	else	1498	else
1367	ev_timer_stop (EV_A_ w);	1499	ev_timer_stop (EV_A_ w);
1368	}	1500	}
1369	else if (w->repeat)	1501	else if (w->repeat)
		1502	{
		1503	w->at = w->repeat;
1370	ev_timer_start (EV_A_ w);	1504	ev_timer_start (EV_A_ w);
		1505	}
1371	}	1506	}
1372		1507
1373	#if EV_PERIODICS	1508	#if EV_PERIODIC_ENABLE
1374	void	1509	void
1375	ev_periodic_start (EV_P_ struct ev_periodic *w)	1510	ev_periodic_start (EV_P_ ev_periodic *w)
1376	{	1511	{
1377	if (ev_is_active (w))	1512	if (expect_false (ev_is_active (w)))
1378	return;	1513	return;
1379		1514
1380	if (w->reschedule_cb)	1515	if (w->reschedule_cb)
1381	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1516	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1382	else if (w->interval)	1517	else if (w->interval)
…		…
1385	/* this formula differs from the one in periodic_reify because we do not always round up */	1520	/* this formula differs from the one in periodic_reify because we do not always round up */
1386	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1521	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1387	}	1522	}
1388		1523
1389	ev_start (EV_A_ (W)w, ++periodiccnt);	1524	ev_start (EV_A_ (W)w, ++periodiccnt);
1390	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1525	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1391	periodics [periodiccnt - 1] = w;	1526	periodics [periodiccnt - 1] = w;
1392	upheap ((WT *)periodics, periodiccnt - 1);	1527	upheap ((WT *)periodics, periodiccnt - 1);
1393		1528
1394	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1529	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1395	}	1530	}
1396		1531
1397	void	1532	void
1398	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1533	ev_periodic_stop (EV_P_ ev_periodic *w)
1399	{	1534	{
1400	ev_clear_pending (EV_A_ (W)w);	1535	ev_clear_pending (EV_A_ (W)w);
1401	if (!ev_is_active (w))	1536	if (expect_false (!ev_is_active (w)))
1402	return;	1537	return;
1403		1538
1404	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1539	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1405		1540
1406	if (((W)w)->active < periodiccnt--)	1541	if (expect_true (((W)w)->active < periodiccnt--))
1407	{	1542	{
1408	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1543	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1409	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1544	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1410	}	1545	}
1411		1546
1412	ev_stop (EV_A_ (W)w);	1547	ev_stop (EV_A_ (W)w);
1413	}	1548	}
1414		1549
1415	void	1550	void
1416	ev_periodic_again (EV_P_ struct ev_periodic *w)	1551	ev_periodic_again (EV_P_ ev_periodic *w)
1417	{	1552	{
1418	/* TODO: use adjustheap and recalculation */	1553	/* TODO: use adjustheap and recalculation */
1419	ev_periodic_stop (EV_A_ w);	1554	ev_periodic_stop (EV_A_ w);
1420	ev_periodic_start (EV_A_ w);	1555	ev_periodic_start (EV_A_ w);
1421	}	1556	}
1422	#endif	1557	#endif
1423		1558
1424	void	1559	void
1425	ev_idle_start (EV_P_ struct ev_idle *w)	1560	ev_idle_start (EV_P_ ev_idle *w)
1426	{	1561	{
1427	if (ev_is_active (w))	1562	if (expect_false (ev_is_active (w)))
1428	return;	1563	return;
1429		1564
1430	ev_start (EV_A_ (W)w, ++idlecnt);	1565	ev_start (EV_A_ (W)w, ++idlecnt);
1431	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));	1566	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1432	idles [idlecnt - 1] = w;	1567	idles [idlecnt - 1] = w;
1433	}	1568	}
1434		1569
1435	void	1570	void
1436	ev_idle_stop (EV_P_ struct ev_idle *w)	1571	ev_idle_stop (EV_P_ ev_idle *w)
1437	{	1572	{
1438	ev_clear_pending (EV_A_ (W)w);	1573	ev_clear_pending (EV_A_ (W)w);
1439	if (ev_is_active (w))	1574	if (expect_false (!ev_is_active (w)))
1440	return;	1575	return;
1441		1576
		1577	{
		1578	int active = ((W)w)->active;
1442	idles [((W)w)->active - 1] = idles [--idlecnt];	1579	idles [active - 1] = idles [--idlecnt];
		1580	((W)idles [active - 1])->active = active;
		1581	}
		1582
1443	ev_stop (EV_A_ (W)w);	1583	ev_stop (EV_A_ (W)w);
1444	}	1584	}
1445		1585
1446	void	1586	void
1447	ev_prepare_start (EV_P_ struct ev_prepare *w)	1587	ev_prepare_start (EV_P_ ev_prepare *w)
1448	{	1588	{
1449	if (ev_is_active (w))	1589	if (expect_false (ev_is_active (w)))
1450	return;	1590	return;
1451		1591
1452	ev_start (EV_A_ (W)w, ++preparecnt);	1592	ev_start (EV_A_ (W)w, ++preparecnt);
1453	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));	1593	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1454	prepares [preparecnt - 1] = w;	1594	prepares [preparecnt - 1] = w;
1455	}	1595	}
1456		1596
1457	void	1597	void
1458	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1598	ev_prepare_stop (EV_P_ ev_prepare *w)
1459	{	1599	{
1460	ev_clear_pending (EV_A_ (W)w);	1600	ev_clear_pending (EV_A_ (W)w);
1461	if (ev_is_active (w))	1601	if (expect_false (!ev_is_active (w)))
1462	return;	1602	return;
1463		1603
		1604	{
		1605	int active = ((W)w)->active;
1464	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1606	prepares [active - 1] = prepares [--preparecnt];
		1607	((W)prepares [active - 1])->active = active;
		1608	}
		1609
1465	ev_stop (EV_A_ (W)w);	1610	ev_stop (EV_A_ (W)w);
1466	}	1611	}
1467		1612
1468	void	1613	void
1469	ev_check_start (EV_P_ struct ev_check *w)	1614	ev_check_start (EV_P_ ev_check *w)
1470	{	1615	{
1471	if (ev_is_active (w))	1616	if (expect_false (ev_is_active (w)))
1472	return;	1617	return;
1473		1618
1474	ev_start (EV_A_ (W)w, ++checkcnt);	1619	ev_start (EV_A_ (W)w, ++checkcnt);
1475	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));	1620	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1476	checks [checkcnt - 1] = w;	1621	checks [checkcnt - 1] = w;
1477	}	1622	}
1478		1623
1479	void	1624	void
1480	ev_check_stop (EV_P_ struct ev_check *w)	1625	ev_check_stop (EV_P_ ev_check *w)
1481	{	1626	{
1482	ev_clear_pending (EV_A_ (W)w);	1627	ev_clear_pending (EV_A_ (W)w);
1483	if (!ev_is_active (w))	1628	if (expect_false (!ev_is_active (w)))
1484	return;	1629	return;
1485		1630
		1631	{
		1632	int active = ((W)w)->active;
1486	checks [((W)w)->active - 1] = checks [--checkcnt];	1633	checks [active - 1] = checks [--checkcnt];
		1634	((W)checks [active - 1])->active = active;
		1635	}
		1636
1487	ev_stop (EV_A_ (W)w);	1637	ev_stop (EV_A_ (W)w);
1488	}	1638	}
1489		1639
1490	#ifndef SA_RESTART	1640	#ifndef SA_RESTART
1491	# define SA_RESTART 0	1641	# define SA_RESTART 0
1492	#endif	1642	#endif
1493		1643
1494	void	1644	void
1495	ev_signal_start (EV_P_ struct ev_signal *w)	1645	ev_signal_start (EV_P_ ev_signal *w)
1496	{	1646	{
1497	#if EV_MULTIPLICITY	1647	#if EV_MULTIPLICITY
1498	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1648	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1499	#endif	1649	#endif
1500	if (ev_is_active (w))	1650	if (expect_false (ev_is_active (w)))
1501	return;	1651	return;
1502		1652
1503	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1653	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1504		1654
1505	ev_start (EV_A_ (W)w, 1);	1655	ev_start (EV_A_ (W)w, 1);
1506	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1656	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1507	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1657	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1508		1658
1509	if (!((WL)w)->next)	1659	if (!((WL)w)->next)
1510	{	1660	{
1511	#if WIN32	1661	#if _WIN32
1512	signal (w->signum, sighandler);	1662	signal (w->signum, sighandler);
1513	#else	1663	#else
1514	struct sigaction sa;	1664	struct sigaction sa;
1515	sa.sa_handler = sighandler;	1665	sa.sa_handler = sighandler;
1516	sigfillset (&sa.sa_mask);	1666	sigfillset (&sa.sa_mask);
…		…
1519	#endif	1669	#endif
1520	}	1670	}
1521	}	1671	}
1522		1672
1523	void	1673	void
1524	ev_signal_stop (EV_P_ struct ev_signal *w)	1674	ev_signal_stop (EV_P_ ev_signal *w)
1525	{	1675	{
1526	ev_clear_pending (EV_A_ (W)w);	1676	ev_clear_pending (EV_A_ (W)w);
1527	if (!ev_is_active (w))	1677	if (expect_false (!ev_is_active (w)))
1528	return;	1678	return;
1529		1679
1530	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1680	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1531	ev_stop (EV_A_ (W)w);	1681	ev_stop (EV_A_ (W)w);
1532		1682
1533	if (!signals [w->signum - 1].head)	1683	if (!signals [w->signum - 1].head)
1534	signal (w->signum, SIG_DFL);	1684	signal (w->signum, SIG_DFL);
1535	}	1685	}
1536		1686
1537	void	1687	void
1538	ev_child_start (EV_P_ struct ev_child *w)	1688	ev_child_start (EV_P_ ev_child *w)
1539	{	1689	{
1540	#if EV_MULTIPLICITY	1690	#if EV_MULTIPLICITY
1541	assert (("child watchers are only supported in the default loop", loop == default_loop));	1691	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1542	#endif	1692	#endif
1543	if (ev_is_active (w))	1693	if (expect_false (ev_is_active (w)))
1544	return;	1694	return;
1545		1695
1546	ev_start (EV_A_ (W)w, 1);	1696	ev_start (EV_A_ (W)w, 1);
1547	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1697	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1548	}	1698	}
1549		1699
1550	void	1700	void
1551	ev_child_stop (EV_P_ struct ev_child *w)	1701	ev_child_stop (EV_P_ ev_child *w)
1552	{	1702	{
1553	ev_clear_pending (EV_A_ (W)w);	1703	ev_clear_pending (EV_A_ (W)w);
1554	if (!ev_is_active (w))	1704	if (expect_false (!ev_is_active (w)))
1555	return;	1705	return;
1556		1706
1557	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1707	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1558	ev_stop (EV_A_ (W)w);	1708	ev_stop (EV_A_ (W)w);
1559	}	1709	}
1560		1710
		1711	#if EV_EMBED_ENABLE
		1712	void noinline
		1713	ev_embed_sweep (EV_P_ ev_embed *w)
		1714	{
		1715	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1716	}
		1717
		1718	static void
		1719	embed_cb (EV_P_ ev_io *io, int revents)
		1720	{
		1721	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		1722
		1723	if (ev_cb (w))
		1724	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1725	else
		1726	ev_embed_sweep (loop, w);
		1727	}
		1728
		1729	void
		1730	ev_embed_start (EV_P_ ev_embed *w)
		1731	{
		1732	if (expect_false (ev_is_active (w)))
		1733	return;
		1734
		1735	{
		1736	struct ev_loop *loop = w->loop;
		1737	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1738	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1739	}
		1740
		1741	ev_set_priority (&w->io, ev_priority (w));
		1742	ev_io_start (EV_A_ &w->io);
		1743
		1744	ev_start (EV_A_ (W)w, 1);
		1745	}
		1746
		1747	void
		1748	ev_embed_stop (EV_P_ ev_embed *w)
		1749	{
		1750	ev_clear_pending (EV_A_ (W)w);
		1751	if (expect_false (!ev_is_active (w)))
		1752	return;
		1753
		1754	ev_io_stop (EV_A_ &w->io);
		1755
		1756	ev_stop (EV_A_ (W)w);
		1757	}
		1758	#endif
		1759
		1760	#if EV_STAT_ENABLE
		1761
		1762	# ifdef _WIN32
		1763	# define lstat(a,b) stat(a,b)
		1764	# endif
		1765
		1766	void
		1767	ev_stat_stat (EV_P_ ev_stat *w)
		1768	{
		1769	if (lstat (w->path, &w->attr) < 0)
		1770	w->attr.st_nlink = 0;
		1771	else if (!w->attr.st_nlink)
		1772	w->attr.st_nlink = 1;
		1773	}
		1774
		1775	static void
		1776	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1777	{
		1778	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1779
		1780	/* we copy this here each the time so that */
		1781	/* prev has the old value when the callback gets invoked */
		1782	w->prev = w->attr;
		1783	ev_stat_stat (EV_A_ w);
		1784
		1785	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1786	ev_feed_event (EV_A_ w, EV_STAT);
		1787	}
		1788
		1789	void
		1790	ev_stat_start (EV_P_ ev_stat *w)
		1791	{
		1792	if (expect_false (ev_is_active (w)))
		1793	return;
		1794
		1795	/* since we use memcmp, we need to clear any padding data etc. */
		1796	memset (&w->prev, 0, sizeof (ev_statdata));
		1797	memset (&w->attr, 0, sizeof (ev_statdata));
		1798
		1799	ev_stat_stat (EV_A_ w);
		1800
		1801	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1802	ev_set_priority (&w->timer, ev_priority (w));
		1803	ev_timer_start (EV_A_ &w->timer);
		1804
		1805	ev_start (EV_A_ (W)w, 1);
		1806	}
		1807
		1808	void
		1809	ev_stat_stop (EV_P_ ev_stat *w)
		1810	{
		1811	ev_clear_pending (EV_A_ (W)w);
		1812	if (expect_false (!ev_is_active (w)))
		1813	return;
		1814
		1815	ev_timer_stop (EV_A_ &w->timer);
		1816
		1817	ev_stop (EV_A_ (W)w);
		1818	}
		1819	#endif
		1820
1561	/*****************************************************************************/	1821	/*****************************************************************************/
1562		1822
1563	struct ev_once	1823	struct ev_once
1564	{	1824	{
1565	struct ev_io io;	1825	ev_io io;
1566	struct ev_timer to;	1826	ev_timer to;
1567	void (*cb)(int revents, void *arg);	1827	void (*cb)(int revents, void *arg);
1568	void *arg;	1828	void *arg;
1569	};	1829	};
1570		1830
1571	static void	1831	static void
…		…
1580		1840
1581	cb (revents, arg);	1841	cb (revents, arg);
1582	}	1842	}
1583		1843
1584	static void	1844	static void
1585	once_cb_io (EV_P_ struct ev_io *w, int revents)	1845	once_cb_io (EV_P_ ev_io *w, int revents)
1586	{	1846	{
1587	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1847	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1588	}	1848	}
1589		1849
1590	static void	1850	static void
1591	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1851	once_cb_to (EV_P_ ev_timer *w, int revents)
1592	{	1852	{
1593	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1853	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1594	}	1854	}
1595		1855
1596	void	1856	void
1597	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1857	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1598	{	1858	{
1599	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	1859	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1600		1860
1601	if (!once)	1861	if (expect_false (!once))
		1862	{
1602	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1863	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1603	else	1864	return;
1604	{	1865	}
		1866
1605	once->cb = cb;	1867	once->cb = cb;
1606	once->arg = arg;	1868	once->arg = arg;
1607		1869
1608	ev_init (&once->io, once_cb_io);	1870	ev_init (&once->io, once_cb_io);
1609	if (fd >= 0)	1871	if (fd >= 0)
1610	{	1872	{
1611	ev_io_set (&once->io, fd, events);	1873	ev_io_set (&once->io, fd, events);
1612	ev_io_start (EV_A_ &once->io);	1874	ev_io_start (EV_A_ &once->io);
1613	}	1875	}
1614		1876
1615	ev_init (&once->to, once_cb_to);	1877	ev_init (&once->to, once_cb_to);
1616	if (timeout >= 0.)	1878	if (timeout >= 0.)
1617	{	1879	{
1618	ev_timer_set (&once->to, timeout, 0.);	1880	ev_timer_set (&once->to, timeout, 0.);
1619	ev_timer_start (EV_A_ &once->to);	1881	ev_timer_start (EV_A_ &once->to);
1620	}
1621	}	1882	}
1622	}	1883	}
1623		1884
1624	#ifdef __cplusplus	1885	#ifdef __cplusplus
1625	}	1886	}

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