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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 1.140 by root, Mon Nov 26 19:49:36 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)
151	# define inline static	202	# define inline_speed static
		203	# define inline_minimal 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
…		…
220	typedef struct	276	typedef struct
221	{	277	{
222	WL head;	278	WL head;
223	unsigned char events;	279	unsigned char events;
224	unsigned char reify;	280	unsigned char reify;
		281	#if EV_SELECT_IS_WINSOCKET
		282	SOCKET handle;
		283	#endif
225	} ANFD;	284	} ANFD;
226		285
227	typedef struct	286	typedef struct
228	{	287	{
229	W w;	288	W w;
…		…
233	#if EV_MULTIPLICITY	292	#if EV_MULTIPLICITY
234		293
235	struct ev_loop	294	struct ev_loop
236	{	295	{
237	ev_tstamp ev_rt_now;	296	ev_tstamp ev_rt_now;
		297	#define ev_rt_now ((loop)->ev_rt_now)
238	#define VAR(name,decl) decl;	298	#define VAR(name,decl) decl;
239	#include "ev_vars.h"	299	#include "ev_vars.h"
240	#undef VAR	300	#undef VAR
241	};	301	};
242	#include "ev_wrap.h"	302	#include "ev_wrap.h"
243		303
244	struct ev_loop default_loop_struct;	304	static struct ev_loop default_loop_struct;
245	static struct ev_loop *default_loop;	305	struct ev_loop *ev_default_loop_ptr;
246		306
247	#else	307	#else
248		308
249	ev_tstamp ev_rt_now;	309	ev_tstamp ev_rt_now;
250	#define VAR(name,decl) static decl;	310	#define VAR(name,decl) static decl;
251	#include "ev_vars.h"	311	#include "ev_vars.h"
252	#undef VAR	312	#undef VAR
253		313
254	static int default_loop;	314	static int ev_default_loop_ptr;
255		315
256	#endif	316	#endif
257		317
258	/*****************************************************************************/	318	/*****************************************************************************/
259		319
260	ev_tstamp	320	ev_tstamp noinline
261	ev_time (void)	321	ev_time (void)
262	{	322	{
263	#if EV_USE_REALTIME	323	#if EV_USE_REALTIME
264	struct timespec ts;	324	struct timespec ts;
265	clock_gettime (CLOCK_REALTIME, &ts);	325	clock_gettime (CLOCK_REALTIME, &ts);
…		…
269	gettimeofday (&tv, 0);	329	gettimeofday (&tv, 0);
270	return tv.tv_sec + tv.tv_usec * 1e-6;	330	return tv.tv_sec + tv.tv_usec * 1e-6;
271	#endif	331	#endif
272	}	332	}
273		333
274	inline ev_tstamp	334	ev_tstamp inline_size
275	get_clock (void)	335	get_clock (void)
276	{	336	{
277	#if EV_USE_MONOTONIC	337	#if EV_USE_MONOTONIC
278	if (expect_true (have_monotonic))	338	if (expect_true (have_monotonic))
279	{	339	{
…		…
292	{	352	{
293	return ev_rt_now;	353	return ev_rt_now;
294	}	354	}
295	#endif	355	#endif
296		356
297	#define array_roundsize(type,n) ((n) | 4 & ~3)	357	#define array_roundsize(type,n) (((n) | 4) & ~3)
298		358
299	#define array_needsize(type,base,cur,cnt,init) \	359	#define array_needsize(type,base,cur,cnt,init) \
300	if (expect_false ((cnt) > cur)) \	360	if (expect_false ((cnt) > cur)) \
301	{ \	361	{ \
302	int newcnt = cur; \	362	int newcnt = cur; \
…		…
317	stem ## max = array_roundsize (stem ## cnt >> 1); \	377	stem ## max = array_roundsize (stem ## cnt >> 1); \
318	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	378	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
319	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	379	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
320	}	380	}
321		381
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) \	382	#define array_free(stem, idx) \
328	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	383	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
329		384
330	/*****************************************************************************/	385	/*****************************************************************************/
331		386
332	static void	387	void inline_size
333	anfds_init (ANFD *base, int count)	388	anfds_init (ANFD *base, int count)
334	{	389	{
335	while (count--)	390	while (count--)
336	{	391	{
337	base->head = 0;	392	base->head = 0;
…		…
340		395
341	++base;	396	++base;
342	}	397	}
343	}	398	}
344		399
345	void	400	void noinline
346	ev_feed_event (EV_P_ void *w, int revents)	401	ev_feed_event (EV_P_ void *w, int revents)
347	{	402	{
348	W w_ = (W)w;	403	W w_ = (W)w;
349		404
350	if (w_->pending)	405	if (expect_false (w_->pending))
351	{	406	{
352	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;	407	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
353	return;	408	return;
354	}	409	}
355		410
356	w_->pending = ++pendingcnt [ABSPRI (w_)];	411	w_->pending = ++pendingcnt [ABSPRI (w_)];
357	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));	412	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
358	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;	413	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
359	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;	414	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
360	}	415	}
361		416
362	static void	417	static void
…		…
366		421
367	for (i = 0; i < eventcnt; ++i)	422	for (i = 0; i < eventcnt; ++i)
368	ev_feed_event (EV_A_ events [i], type);	423	ev_feed_event (EV_A_ events [i], type);
369	}	424	}
370		425
371	inline void	426	void inline_speed
372	fd_event (EV_P_ int fd, int revents)	427	fd_event (EV_P_ int fd, int revents)
373	{	428	{
374	ANFD *anfd = anfds + fd;	429	ANFD *anfd = anfds + fd;
375	struct ev_io *w;	430	ev_io *w;
376		431
377	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	432	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
378	{	433	{
379	int ev = w->events & revents;	434	int ev = w->events & revents;
380		435
381	if (ev)	436	if (ev)
382	ev_feed_event (EV_A_ (W)w, ev);	437	ev_feed_event (EV_A_ (W)w, ev);
…		…
389	fd_event (EV_A_ fd, revents);	444	fd_event (EV_A_ fd, revents);
390	}	445	}
391		446
392	/*****************************************************************************/	447	/*****************************************************************************/
393		448
394	static void	449	void inline_size
395	fd_reify (EV_P)	450	fd_reify (EV_P)
396	{	451	{
397	int i;	452	int i;
398		453
399	for (i = 0; i < fdchangecnt; ++i)	454	for (i = 0; i < fdchangecnt; ++i)
400	{	455	{
401	int fd = fdchanges [i];	456	int fd = fdchanges [i];
402	ANFD *anfd = anfds + fd;	457	ANFD *anfd = anfds + fd;
403	struct ev_io *w;	458	ev_io *w;
404		459
405	int events = 0;	460	int events = 0;
406		461
407	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	462	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
408	events |= w->events;	463	events |= w->events;
409		464
		465	#if EV_SELECT_IS_WINSOCKET
		466	if (events)
		467	{
		468	unsigned long argp;
		469	anfd->handle = _get_osfhandle (fd);
		470	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		471	}
		472	#endif
		473
410	anfd->reify = 0;	474	anfd->reify = 0;
411		475
412	method_modify (EV_A_ fd, anfd->events, events);	476	backend_modify (EV_A_ fd, anfd->events, events);
413	anfd->events = events;	477	anfd->events = events;
414	}	478	}
415		479
416	fdchangecnt = 0;	480	fdchangecnt = 0;
417	}	481	}
418		482
419	static void	483	void inline_size
420	fd_change (EV_P_ int fd)	484	fd_change (EV_P_ int fd)
421	{	485	{
422	if (anfds [fd].reify)	486	if (expect_false (anfds [fd].reify))
423	return;	487	return;
424		488
425	anfds [fd].reify = 1;	489	anfds [fd].reify = 1;
426		490
427	++fdchangecnt;	491	++fdchangecnt;
428	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	492	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
429	fdchanges [fdchangecnt - 1] = fd;	493	fdchanges [fdchangecnt - 1] = fd;
430	}	494	}
431		495
432	static void	496	void inline_speed
433	fd_kill (EV_P_ int fd)	497	fd_kill (EV_P_ int fd)
434	{	498	{
435	struct ev_io *w;	499	ev_io *w;
436		500
437	while ((w = (struct ev_io *)anfds [fd].head))	501	while ((w = (ev_io *)anfds [fd].head))
438	{	502	{
439	ev_io_stop (EV_A_ w);	503	ev_io_stop (EV_A_ w);
440	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	504	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
441	}	505	}
442	}	506	}
443		507
444	static int	508	int inline_size
445	fd_valid (int fd)	509	fd_valid (int fd)
446	{	510	{
447	#ifdef WIN32	511	#ifdef _WIN32
448	return !!win32_get_osfhandle (fd);	512	return _get_osfhandle (fd) != -1;
449	#else	513	#else
450	return fcntl (fd, F_GETFD) != -1;	514	return fcntl (fd, F_GETFD) != -1;
451	#endif	515	#endif
452	}	516	}
453		517
454	/* called on EBADF to verify fds */	518	/* called on EBADF to verify fds */
455	static void	519	static void noinline
456	fd_ebadf (EV_P)	520	fd_ebadf (EV_P)
457	{	521	{
458	int fd;	522	int fd;
459		523
460	for (fd = 0; fd < anfdmax; ++fd)	524	for (fd = 0; fd < anfdmax; ++fd)
…		…
462	if (!fd_valid (fd) == -1 && errno == EBADF)	526	if (!fd_valid (fd) == -1 && errno == EBADF)
463	fd_kill (EV_A_ fd);	527	fd_kill (EV_A_ fd);
464	}	528	}
465		529
466	/* called on ENOMEM in select/poll to kill some fds and retry */	530	/* called on ENOMEM in select/poll to kill some fds and retry */
467	static void	531	static void noinline
468	fd_enomem (EV_P)	532	fd_enomem (EV_P)
469	{	533	{
470	int fd;	534	int fd;
471		535
472	for (fd = anfdmax; fd--; )	536	for (fd = anfdmax; fd--; )
…		…
475	fd_kill (EV_A_ fd);	539	fd_kill (EV_A_ fd);
476	return;	540	return;
477	}	541	}
478	}	542	}
479		543
480	/* usually called after fork if method needs to re-arm all fds from scratch */	544	/* usually called after fork if backend needs to re-arm all fds from scratch */
481	static void	545	static void noinline
482	fd_rearm_all (EV_P)	546	fd_rearm_all (EV_P)
483	{	547	{
484	int fd;	548	int fd;
485		549
486	/* this should be highly optimised to not do anything but set a flag */	550	/* this should be highly optimised to not do anything but set a flag */
…		…
492	}	556	}
493	}	557	}
494		558
495	/*****************************************************************************/	559	/*****************************************************************************/
496		560
497	static void	561	void inline_speed
498	upheap (WT *heap, int k)	562	upheap (WT *heap, int k)
499	{	563	{
500	WT w = heap [k];	564	WT w = heap [k];
501		565
502	while (k && heap [k >> 1]->at > w->at)	566	while (k && heap [k >> 1]->at > w->at)
…		…
509	heap [k] = w;	573	heap [k] = w;
510	((W)heap [k])->active = k + 1;	574	((W)heap [k])->active = k + 1;
511		575
512	}	576	}
513		577
514	static void	578	void inline_speed
515	downheap (WT *heap, int N, int k)	579	downheap (WT *heap, int N, int k)
516	{	580	{
517	WT w = heap [k];	581	WT w = heap [k];
518		582
519	while (k < (N >> 1))	583	while (k < (N >> 1))
…		…
533		597
534	heap [k] = w;	598	heap [k] = w;
535	((W)heap [k])->active = k + 1;	599	((W)heap [k])->active = k + 1;
536	}	600	}
537		601
538	inline void	602	void inline_size
539	adjustheap (WT *heap, int N, int k, ev_tstamp at)	603	adjustheap (WT *heap, int N, int k)
540	{	604	{
541	ev_tstamp old_at = heap [k]->at;	605	upheap (heap, k);
542	heap [k]->at = at;
543
544	if (old_at < at)
545	downheap (heap, N, k);	606	downheap (heap, N, k);
546	else
547	upheap (heap, k);
548	}	607	}
549		608
550	/*****************************************************************************/	609	/*****************************************************************************/
551		610
552	typedef struct	611	typedef struct
…		…
558	static ANSIG *signals;	617	static ANSIG *signals;
559	static int signalmax;	618	static int signalmax;
560		619
561	static int sigpipe [2];	620	static int sigpipe [2];
562	static sig_atomic_t volatile gotsig;	621	static sig_atomic_t volatile gotsig;
563	static struct ev_io sigev;	622	static ev_io sigev;
564		623
565	static void	624	void inline_size
566	signals_init (ANSIG *base, int count)	625	signals_init (ANSIG *base, int count)
567	{	626	{
568	while (count--)	627	while (count--)
569	{	628	{
570	base->head = 0;	629	base->head = 0;
…		…
575	}	634	}
576		635
577	static void	636	static void
578	sighandler (int signum)	637	sighandler (int signum)
579	{	638	{
580	#if WIN32	639	#if _WIN32
581	signal (signum, sighandler);	640	signal (signum, sighandler);
582	#endif	641	#endif
583		642
584	signals [signum - 1].gotsig = 1;	643	signals [signum - 1].gotsig = 1;
585		644
586	if (!gotsig)	645	if (!gotsig)
587	{	646	{
588	int old_errno = errno;	647	int old_errno = errno;
589	gotsig = 1;	648	gotsig = 1;
590	#ifdef WIN32
591	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
592	#else
593	write (sigpipe [1], &signum, 1);	649	write (sigpipe [1], &signum, 1);
594	#endif
595	errno = old_errno;	650	errno = old_errno;
596	}	651	}
597	}	652	}
598		653
599	void	654	void noinline
600	ev_feed_signal_event (EV_P_ int signum)	655	ev_feed_signal_event (EV_P_ int signum)
601	{	656	{
602	WL w;	657	WL w;
603		658
604	#if EV_MULTIPLICITY	659	#if EV_MULTIPLICITY
605	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	660	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
606	#endif	661	#endif
607		662
608	--signum;	663	--signum;
609		664
610	if (signum < 0 || signum >= signalmax)	665	if (signum < 0 || signum >= signalmax)
…		…
615	for (w = signals [signum].head; w; w = w->next)	670	for (w = signals [signum].head; w; w = w->next)
616	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	671	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
617	}	672	}
618		673
619	static void	674	static void
620	sigcb (EV_P_ struct ev_io *iow, int revents)	675	sigcb (EV_P_ ev_io *iow, int revents)
621	{	676	{
622	int signum;	677	int signum;
623		678
624	#ifdef WIN32
625	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
626	#else
627	read (sigpipe [0], &revents, 1);	679	read (sigpipe [0], &revents, 1);
628	#endif
629	gotsig = 0;	680	gotsig = 0;
630		681
631	for (signum = signalmax; signum--; )	682	for (signum = signalmax; signum--; )
632	if (signals [signum].gotsig)	683	if (signals [signum].gotsig)
633	ev_feed_signal_event (EV_A_ signum + 1);	684	ev_feed_signal_event (EV_A_ signum + 1);
634	}	685	}
635		686
636	static void	687	void inline_size
		688	fd_intern (int fd)
		689	{
		690	#ifdef _WIN32
		691	int arg = 1;
		692	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		693	#else
		694	fcntl (fd, F_SETFD, FD_CLOEXEC);
		695	fcntl (fd, F_SETFL, O_NONBLOCK);
		696	#endif
		697	}
		698
		699	static void noinline
637	siginit (EV_P)	700	siginit (EV_P)
638	{	701	{
639	#ifndef WIN32	702	fd_intern (sigpipe [0]);
640	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	703	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		704
648	ev_io_set (&sigev, sigpipe [0], EV_READ);	705	ev_io_set (&sigev, sigpipe [0], EV_READ);
649	ev_io_start (EV_A_ &sigev);	706	ev_io_start (EV_A_ &sigev);
650	ev_unref (EV_A); /* child watcher should not keep loop alive */	707	ev_unref (EV_A); /* child watcher should not keep loop alive */
651	}	708	}
652		709
653	/*****************************************************************************/	710	/*****************************************************************************/
654		711
655	static struct ev_child *childs [PID_HASHSIZE];	712	static ev_child *childs [PID_HASHSIZE];
656		713
657	#ifndef WIN32	714	#ifndef _WIN32
658		715
659	static struct ev_signal childev;	716	static ev_signal childev;
660		717
661	#ifndef WCONTINUED	718	#ifndef WCONTINUED
662	# define WCONTINUED 0	719	# define WCONTINUED 0
663	#endif	720	#endif
664		721
665	static void	722	void inline_speed
666	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	723	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
667	{	724	{
668	struct ev_child *w;	725	ev_child *w;
669		726
670	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	727	for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
671	if (w->pid == pid || !w->pid)	728	if (w->pid == pid || !w->pid)
672	{	729	{
673	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	730	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
674	w->rpid = pid;	731	w->rpid = pid;
675	w->rstatus = status;	732	w->rstatus = status;
676	ev_feed_event (EV_A_ (W)w, EV_CHILD);	733	ev_feed_event (EV_A_ (W)w, EV_CHILD);
677	}	734	}
678	}	735	}
679		736
680	static void	737	static void
681	childcb (EV_P_ struct ev_signal *sw, int revents)	738	childcb (EV_P_ ev_signal *sw, int revents)
682	{	739	{
683	int pid, status;	740	int pid, status;
684		741
685	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	742	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
686	{	743	{
687	/* make sure we are called again until all childs have been reaped */	744	/* make sure we are called again until all childs have been reaped */
		745	/* 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);	746	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
689		747
690	child_reap (EV_A_ sw, pid, pid, status);	748	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 */	749	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
692	}	750	}
693	}	751	}
694		752
695	#endif	753	#endif
696		754
697	/*****************************************************************************/	755	/*****************************************************************************/
698		756
		757	#if EV_USE_PORT
		758	# include "ev_port.c"
		759	#endif
699	#if EV_USE_KQUEUE	760	#if EV_USE_KQUEUE
700	# include "ev_kqueue.c"	761	# include "ev_kqueue.c"
701	#endif	762	#endif
702	#if EV_USE_EPOLL	763	#if EV_USE_EPOLL
703	# include "ev_epoll.c"	764	# include "ev_epoll.c"
…		…
720	{	781	{
721	return EV_VERSION_MINOR;	782	return EV_VERSION_MINOR;
722	}	783	}
723		784
724	/* return true if we are running with elevated privileges and should ignore env variables */	785	/* return true if we are running with elevated privileges and should ignore env variables */
725	static int	786	int inline_size
726	enable_secure (void)	787	enable_secure (void)
727	{	788	{
728	#ifdef WIN32	789	#ifdef _WIN32
729	return 0;	790	return 0;
730	#else	791	#else
731	return getuid () != geteuid ()	792	return getuid () != geteuid ()
732	|| getgid () != getegid ();	793	|| getgid () != getegid ();
733	#endif	794	#endif
734	}	795	}
735		796
736	int	797	unsigned int
737	ev_method (EV_P)	798	ev_supported_backends (void)
738	{	799	{
739	return method;	800	unsigned int flags = 0;
		801
		802	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		803	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		804	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		805	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		806	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		807
		808	return flags;
		809	}
		810
		811	unsigned int
		812	ev_recommended_backends (void)
		813	{
		814	unsigned int flags = ev_supported_backends ();
		815
		816	#ifndef __NetBSD__
		817	/* kqueue is borked on everything but netbsd apparently */
		818	/* it usually doesn't work correctly on anything but sockets and pipes */
		819	flags &= ~EVBACKEND_KQUEUE;
		820	#endif
		821	#ifdef __APPLE__
		822	// flags &= ~EVBACKEND_KQUEUE; for documentation
		823	flags &= ~EVBACKEND_POLL;
		824	#endif
		825
		826	return flags;
		827	}
		828
		829	unsigned int
		830	ev_embeddable_backends (void)
		831	{
		832	return EVBACKEND_EPOLL
		833	| EVBACKEND_KQUEUE
		834	| EVBACKEND_PORT;
		835	}
		836
		837	unsigned int
		838	ev_backend (EV_P)
		839	{
		840	return backend;
740	}	841	}
741		842
742	static void	843	static void
743	loop_init (EV_P_ int methods)	844	loop_init (EV_P_ unsigned int flags)
744	{	845	{
745	if (!method)	846	if (!backend)
746	{	847	{
747	#if EV_USE_MONOTONIC	848	#if EV_USE_MONOTONIC
748	{	849	{
749	struct timespec ts;	850	struct timespec ts;
750	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	851	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
755	ev_rt_now = ev_time ();	856	ev_rt_now = ev_time ();
756	mn_now = get_clock ();	857	mn_now = get_clock ();
757	now_floor = mn_now;	858	now_floor = mn_now;
758	rtmn_diff = ev_rt_now - mn_now;	859	rtmn_diff = ev_rt_now - mn_now;
759		860
760	if (methods == EVMETHOD_AUTO)	861	if (!(flags & EVFLAG_NOENV)
761	if (!enable_secure () && getenv ("LIBEV_METHODS"))	862	&& !enable_secure ()
		863	&& getenv ("LIBEV_FLAGS"))
762	methods = atoi (getenv ("LIBEV_METHODS"));	864	flags = atoi (getenv ("LIBEV_FLAGS"));
763	else
764	methods = EVMETHOD_ANY;
765		865
766	method = 0;	866	if (!(flags & 0x0000ffffUL))
767	#if EV_USE_WIN32	867	flags |= ev_recommended_backends ();
768	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	868
		869	backend = 0;
		870	#if EV_USE_PORT
		871	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
769	#endif	872	#endif
770	#if EV_USE_KQUEUE	873	#if EV_USE_KQUEUE
771	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	874	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
772	#endif	875	#endif
773	#if EV_USE_EPOLL	876	#if EV_USE_EPOLL
774	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	877	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
775	#endif	878	#endif
776	#if EV_USE_POLL	879	#if EV_USE_POLL
777	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	880	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
778	#endif	881	#endif
779	#if EV_USE_SELECT	882	#if EV_USE_SELECT
780	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	883	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
781	#endif	884	#endif
782		885
783	ev_init (&sigev, sigcb);	886	ev_init (&sigev, sigcb);
784	ev_set_priority (&sigev, EV_MAXPRI);	887	ev_set_priority (&sigev, EV_MAXPRI);
785	}	888	}
786	}	889	}
787		890
788	void	891	static void
789	loop_destroy (EV_P)	892	loop_destroy (EV_P)
790	{	893	{
791	int i;	894	int i;
792		895
793	#if EV_USE_WIN32	896	#if EV_USE_PORT
794	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	897	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
795	#endif	898	#endif
796	#if EV_USE_KQUEUE	899	#if EV_USE_KQUEUE
797	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	900	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
798	#endif	901	#endif
799	#if EV_USE_EPOLL	902	#if EV_USE_EPOLL
800	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	903	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
801	#endif	904	#endif
802	#if EV_USE_POLL	905	#if EV_USE_POLL
803	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	906	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
804	#endif	907	#endif
805	#if EV_USE_SELECT	908	#if EV_USE_SELECT
806	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	909	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
807	#endif	910	#endif
808		911
809	for (i = NUMPRI; i--; )	912	for (i = NUMPRI; i--; )
810	array_free (pending, [i]);	913	array_free (pending, [i]);
811		914
812	/* have to use the microsoft-never-gets-it-right macro */	915	/* have to use the microsoft-never-gets-it-right macro */
813	array_free_microshit (fdchange);	916	array_free (fdchange, EMPTY0);
814	array_free_microshit (timer);	917	array_free (timer, EMPTY0);
815	#if EV_PERIODICS	918	#if EV_PERIODIC_ENABLE
816	array_free_microshit (periodic);	919	array_free (periodic, EMPTY0);
817	#endif	920	#endif
818	array_free_microshit (idle);	921	array_free (idle, EMPTY0);
819	array_free_microshit (prepare);	922	array_free (prepare, EMPTY0);
820	array_free_microshit (check);	923	array_free (check, EMPTY0);
821		924
822	method = 0;	925	backend = 0;
823	}	926	}
824		927
825	static void	928	static void
826	loop_fork (EV_P)	929	loop_fork (EV_P)
827	{	930	{
		931	#if EV_USE_PORT
		932	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		933	#endif
		934	#if EV_USE_KQUEUE
		935	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		936	#endif
828	#if EV_USE_EPOLL	937	#if EV_USE_EPOLL
829	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	938	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	939	#endif
834		940
835	if (ev_is_active (&sigev))	941	if (ev_is_active (&sigev))
836	{	942	{
837	/* default loop */	943	/* default loop */
…		…
850	postfork = 0;	956	postfork = 0;
851	}	957	}
852		958
853	#if EV_MULTIPLICITY	959	#if EV_MULTIPLICITY
854	struct ev_loop *	960	struct ev_loop *
855	ev_loop_new (int methods)	961	ev_loop_new (unsigned int flags)
856	{	962	{
857	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	963	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
858		964
859	memset (loop, 0, sizeof (struct ev_loop));	965	memset (loop, 0, sizeof (struct ev_loop));
860		966
861	loop_init (EV_A_ methods);	967	loop_init (EV_A_ flags);
862		968
863	if (ev_method (EV_A))	969	if (ev_backend (EV_A))
864	return loop;	970	return loop;
865		971
866	return 0;	972	return 0;
867	}	973	}
868		974
…		…
881		987
882	#endif	988	#endif
883		989
884	#if EV_MULTIPLICITY	990	#if EV_MULTIPLICITY
885	struct ev_loop *	991	struct ev_loop *
		992	ev_default_loop_init (unsigned int flags)
886	#else	993	#else
887	int	994	int
		995	ev_default_loop (unsigned int flags)
888	#endif	996	#endif
889	ev_default_loop (int methods)
890	{	997	{
891	if (sigpipe [0] == sigpipe [1])	998	if (sigpipe [0] == sigpipe [1])
892	if (pipe (sigpipe))	999	if (pipe (sigpipe))
893	return 0;	1000	return 0;
894		1001
895	if (!default_loop)	1002	if (!ev_default_loop_ptr)
896	{	1003	{
897	#if EV_MULTIPLICITY	1004	#if EV_MULTIPLICITY
898	struct ev_loop *loop = default_loop = &default_loop_struct;	1005	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
899	#else	1006	#else
900	default_loop = 1;	1007	ev_default_loop_ptr = 1;
901	#endif	1008	#endif
902		1009
903	loop_init (EV_A_ methods);	1010	loop_init (EV_A_ flags);
904		1011
905	if (ev_method (EV_A))	1012	if (ev_backend (EV_A))
906	{	1013	{
907	siginit (EV_A);	1014	siginit (EV_A);
908		1015
909	#ifndef WIN32	1016	#ifndef _WIN32
910	ev_signal_init (&childev, childcb, SIGCHLD);	1017	ev_signal_init (&childev, childcb, SIGCHLD);
911	ev_set_priority (&childev, EV_MAXPRI);	1018	ev_set_priority (&childev, EV_MAXPRI);
912	ev_signal_start (EV_A_ &childev);	1019	ev_signal_start (EV_A_ &childev);
913	ev_unref (EV_A); /* child watcher should not keep loop alive */	1020	ev_unref (EV_A); /* child watcher should not keep loop alive */
914	#endif	1021	#endif
915	}	1022	}
916	else	1023	else
917	default_loop = 0;	1024	ev_default_loop_ptr = 0;
918	}	1025	}
919		1026
920	return default_loop;	1027	return ev_default_loop_ptr;
921	}	1028	}
922		1029
923	void	1030	void
924	ev_default_destroy (void)	1031	ev_default_destroy (void)
925	{	1032	{
926	#if EV_MULTIPLICITY	1033	#if EV_MULTIPLICITY
927	struct ev_loop *loop = default_loop;	1034	struct ev_loop *loop = ev_default_loop_ptr;
928	#endif	1035	#endif
929		1036
930	#ifndef WIN32	1037	#ifndef _WIN32
931	ev_ref (EV_A); /* child watcher */	1038	ev_ref (EV_A); /* child watcher */
932	ev_signal_stop (EV_A_ &childev);	1039	ev_signal_stop (EV_A_ &childev);
933	#endif	1040	#endif
934		1041
935	ev_ref (EV_A); /* signal watcher */	1042	ev_ref (EV_A); /* signal watcher */
…		…
943		1050
944	void	1051	void
945	ev_default_fork (void)	1052	ev_default_fork (void)
946	{	1053	{
947	#if EV_MULTIPLICITY	1054	#if EV_MULTIPLICITY
948	struct ev_loop *loop = default_loop;	1055	struct ev_loop *loop = ev_default_loop_ptr;
949	#endif	1056	#endif
950		1057
951	if (method)	1058	if (backend)
952	postfork = 1;	1059	postfork = 1;
953	}	1060	}
954		1061
955	/*****************************************************************************/	1062	/*****************************************************************************/
956		1063
957	static int	1064	int inline_size
958	any_pending (EV_P)	1065	any_pending (EV_P)
959	{	1066	{
960	int pri;	1067	int pri;
961		1068
962	for (pri = NUMPRI; pri--; )	1069	for (pri = NUMPRI; pri--; )
…		…
964	return 1;	1071	return 1;
965		1072
966	return 0;	1073	return 0;
967	}	1074	}
968		1075
969	static void	1076	void inline_speed
970	call_pending (EV_P)	1077	call_pending (EV_P)
971	{	1078	{
972	int pri;	1079	int pri;
973		1080
974	for (pri = NUMPRI; pri--; )	1081	for (pri = NUMPRI; pri--; )
975	while (pendingcnt [pri])	1082	while (pendingcnt [pri])
976	{	1083	{
977	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1084	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
978		1085
979	if (p->w)	1086	if (expect_true (p->w))
980	{	1087	{
		1088	assert (("non-pending watcher on pending list", p->w->pending));
		1089
981	p->w->pending = 0;	1090	p->w->pending = 0;
982	EV_CB_INVOKE (p->w, p->events);	1091	EV_CB_INVOKE (p->w, p->events);
983	}	1092	}
984	}	1093	}
985	}	1094	}
986		1095
987	static void	1096	void inline_size
988	timers_reify (EV_P)	1097	timers_reify (EV_P)
989	{	1098	{
990	while (timercnt && ((WT)timers [0])->at <= mn_now)	1099	while (timercnt && ((WT)timers [0])->at <= mn_now)
991	{	1100	{
992	struct ev_timer *w = timers [0];	1101	ev_timer *w = timers [0];
993		1102
994	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1103	assert (("inactive timer on timer heap detected", ev_is_active (w)));
995		1104
996	/* first reschedule or stop timer */	1105	/* first reschedule or stop timer */
997	if (w->repeat)	1106	if (w->repeat)
…		…
1009		1118
1010	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1119	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1011	}	1120	}
1012	}	1121	}
1013		1122
1014	#if EV_PERIODICS	1123	#if EV_PERIODIC_ENABLE
1015	static void	1124	void inline_size
1016	periodics_reify (EV_P)	1125	periodics_reify (EV_P)
1017	{	1126	{
1018	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1127	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1019	{	1128	{
1020	struct ev_periodic *w = periodics [0];	1129	ev_periodic *w = periodics [0];
1021		1130
1022	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1131	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1023		1132
1024	/* first reschedule or stop timer */	1133	/* first reschedule or stop timer */
1025	if (w->reschedule_cb)	1134	if (w->reschedule_cb)
1026	{	1135	{
1027	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1136	((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));	1137	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1030	downheap ((WT *)periodics, periodiccnt, 0);	1138	downheap ((WT *)periodics, periodiccnt, 0);
1031	}	1139	}
1032	else if (w->interval)	1140	else if (w->interval)
1033	{	1141	{
…		…
1040		1148
1041	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1149	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1042	}	1150	}
1043	}	1151	}
1044		1152
1045	static void	1153	static void noinline
1046	periodics_reschedule (EV_P)	1154	periodics_reschedule (EV_P)
1047	{	1155	{
1048	int i;	1156	int i;
1049		1157
1050	/* adjust periodics after time jump */	1158	/* adjust periodics after time jump */
1051	for (i = 0; i < periodiccnt; ++i)	1159	for (i = 0; i < periodiccnt; ++i)
1052	{	1160	{
1053	struct ev_periodic *w = periodics [i];	1161	ev_periodic *w = periodics [i];
1054		1162
1055	if (w->reschedule_cb)	1163	if (w->reschedule_cb)
1056	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1164	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1057	else if (w->interval)	1165	else if (w->interval)
1058	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1166	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
…		…
1062	for (i = periodiccnt >> 1; i--; )	1170	for (i = periodiccnt >> 1; i--; )
1063	downheap ((WT *)periodics, periodiccnt, i);	1171	downheap ((WT *)periodics, periodiccnt, i);
1064	}	1172	}
1065	#endif	1173	#endif
1066		1174
1067	inline int	1175	int inline_size
1068	time_update_monotonic (EV_P)	1176	time_update_monotonic (EV_P)
1069	{	1177	{
1070	mn_now = get_clock ();	1178	mn_now = get_clock ();
1071		1179
1072	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1180	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
…		…
1080	ev_rt_now = ev_time ();	1188	ev_rt_now = ev_time ();
1081	return 1;	1189	return 1;
1082	}	1190	}
1083	}	1191	}
1084		1192
1085	static void	1193	void inline_size
1086	time_update (EV_P)	1194	time_update (EV_P)
1087	{	1195	{
1088	int i;	1196	int i;
1089		1197
1090	#if EV_USE_MONOTONIC	1198	#if EV_USE_MONOTONIC
…		…
1092	{	1200	{
1093	if (time_update_monotonic (EV_A))	1201	if (time_update_monotonic (EV_A))
1094	{	1202	{
1095	ev_tstamp odiff = rtmn_diff;	1203	ev_tstamp odiff = rtmn_diff;
1096		1204
1097	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1205	/* loop a few times, before making important decisions.
		1206	* on the choice of "4": one iteration isn't enough,
		1207	* in case we get preempted during the calls to
		1208	* ev_time and get_clock. a second call is almost guarenteed
		1209	* to succeed in that case, though. and looping a few more times
		1210	* doesn't hurt either as we only do this on time-jumps or
		1211	* in the unlikely event of getting preempted here.
		1212	*/
		1213	for (i = 4; --i; )
1098	{	1214	{
1099	rtmn_diff = ev_rt_now - mn_now;	1215	rtmn_diff = ev_rt_now - mn_now;
1100		1216
1101	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1217	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1102	return; /* all is well */	1218	return; /* all is well */
…		…
1104	ev_rt_now = ev_time ();	1220	ev_rt_now = ev_time ();
1105	mn_now = get_clock ();	1221	mn_now = get_clock ();
1106	now_floor = mn_now;	1222	now_floor = mn_now;
1107	}	1223	}
1108		1224
1109	# if EV_PERIODICS	1225	# if EV_PERIODIC_ENABLE
1110	periodics_reschedule (EV_A);	1226	periodics_reschedule (EV_A);
1111	# endif	1227	# endif
1112	/* no timer adjustment, as the monotonic clock doesn't jump */	1228	/* no timer adjustment, as the monotonic clock doesn't jump */
1113	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1229	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1114	}	1230	}
…		…
1118	{	1234	{
1119	ev_rt_now = ev_time ();	1235	ev_rt_now = ev_time ();
1120		1236
1121	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1237	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1122	{	1238	{
1123	#if EV_PERIODICS	1239	#if EV_PERIODIC_ENABLE
1124	periodics_reschedule (EV_A);	1240	periodics_reschedule (EV_A);
1125	#endif	1241	#endif
1126		1242
1127	/* adjust timers. this is easy, as the offset is the same for all */	1243	/* adjust timers. this is easy, as the offset is the same for all */
1128	for (i = 0; i < timercnt; ++i)	1244	for (i = 0; i < timercnt; ++i)
…		…
1148	static int loop_done;	1264	static int loop_done;
1149		1265
1150	void	1266	void
1151	ev_loop (EV_P_ int flags)	1267	ev_loop (EV_P_ int flags)
1152	{	1268	{
1153	double block;
1154	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1269	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1270	? EVUNLOOP_ONE
		1271	: EVUNLOOP_CANCEL;
1155		1272
1156	do	1273	while (activecnt)
1157	{	1274	{
1158	/* queue check watchers (and execute them) */	1275	/* queue check watchers (and execute them) */
1159	if (expect_false (preparecnt))	1276	if (expect_false (preparecnt))
1160	{	1277	{
1161	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1278	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1168		1285
1169	/* update fd-related kernel structures */	1286	/* update fd-related kernel structures */
1170	fd_reify (EV_A);	1287	fd_reify (EV_A);
1171		1288
1172	/* calculate blocking time */	1289	/* calculate blocking time */
		1290	{
		1291	double block;
1173		1292
1174	/* we only need this for !monotonic clock or timers, but as we basically	1293	if (flags & EVLOOP_NONBLOCK || idlecnt)
1175	always have timers, we just calculate it always */	1294	block = 0.; /* do not block at all */
		1295	else
		1296	{
		1297	/* update time to cancel out callback processing overhead */
1176	#if EV_USE_MONOTONIC	1298	#if EV_USE_MONOTONIC
1177	if (expect_true (have_monotonic))	1299	if (expect_true (have_monotonic))
1178	time_update_monotonic (EV_A);	1300	time_update_monotonic (EV_A);
1179	else	1301	else
1180	#endif	1302	#endif
1181	{	1303	{
1182	ev_rt_now = ev_time ();	1304	ev_rt_now = ev_time ();
1183	mn_now = ev_rt_now;	1305	mn_now = ev_rt_now;
1184	}	1306	}
1185		1307
1186	if (flags & EVLOOP_NONBLOCK || idlecnt)
1187	block = 0.;
1188	else
1189	{
1190	block = MAX_BLOCKTIME;	1308	block = MAX_BLOCKTIME;
1191		1309
1192	if (timercnt)	1310	if (timercnt)
1193	{	1311	{
1194	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1312	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1195	if (block > to) block = to;	1313	if (block > to) block = to;
1196	}	1314	}
1197		1315
1198	#if EV_PERIODICS	1316	#if EV_PERIODIC_ENABLE
1199	if (periodiccnt)	1317	if (periodiccnt)
1200	{	1318	{
1201	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1319	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1202	if (block > to) block = to;	1320	if (block > to) block = to;
1203	}	1321	}
1204	#endif	1322	#endif
1205		1323
1206	if (block < 0.) block = 0.;	1324	if (expect_false (block < 0.)) block = 0.;
1207	}	1325	}
1208		1326
1209	method_poll (EV_A_ block);	1327	backend_poll (EV_A_ block);
		1328	}
1210		1329
1211	/* update ev_rt_now, do magic */	1330	/* update ev_rt_now, do magic */
1212	time_update (EV_A);	1331	time_update (EV_A);
1213		1332
1214	/* queue pending timers and reschedule them */	1333	/* queue pending timers and reschedule them */
1215	timers_reify (EV_A); /* relative timers called last */	1334	timers_reify (EV_A); /* relative timers called last */
1216	#if EV_PERIODICS	1335	#if EV_PERIODIC_ENABLE
1217	periodics_reify (EV_A); /* absolute timers called first */	1336	periodics_reify (EV_A); /* absolute timers called first */
1218	#endif	1337	#endif
1219		1338
1220	/* queue idle watchers unless io or timers are pending */	1339	/* queue idle watchers unless other events are pending */
1221	if (idlecnt && !any_pending (EV_A))	1340	if (idlecnt && !any_pending (EV_A))
1222	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1341	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1223		1342
1224	/* queue check watchers, to be executed first */	1343	/* queue check watchers, to be executed first */
1225	if (checkcnt)	1344	if (expect_false (checkcnt))
1226	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1345	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1227		1346
1228	call_pending (EV_A);	1347	call_pending (EV_A);
1229	}
1230	while (activecnt && !loop_done);
1231		1348
1232	if (loop_done != 2)	1349	if (expect_false (loop_done))
1233	loop_done = 0;	1350	break;
		1351	}
		1352
		1353	if (loop_done == EVUNLOOP_ONE)
		1354	loop_done = EVUNLOOP_CANCEL;
1234	}	1355	}
1235		1356
1236	void	1357	void
1237	ev_unloop (EV_P_ int how)	1358	ev_unloop (EV_P_ int how)
1238	{	1359	{
1239	loop_done = how;	1360	loop_done = how;
1240	}	1361	}
1241		1362
1242	/*****************************************************************************/	1363	/*****************************************************************************/
1243		1364
1244	inline void	1365	void inline_size
1245	wlist_add (WL *head, WL elem)	1366	wlist_add (WL *head, WL elem)
1246	{	1367	{
1247	elem->next = *head;	1368	elem->next = *head;
1248	*head = elem;	1369	*head = elem;
1249	}	1370	}
1250		1371
1251	inline void	1372	void inline_size
1252	wlist_del (WL *head, WL elem)	1373	wlist_del (WL *head, WL elem)
1253	{	1374	{
1254	while (*head)	1375	while (*head)
1255	{	1376	{
1256	if (*head == elem)	1377	if (*head == elem)
…		…
1261		1382
1262	head = &(*head)->next;	1383	head = &(*head)->next;
1263	}	1384	}
1264	}	1385	}
1265		1386
1266	inline void	1387	void inline_speed
1267	ev_clear_pending (EV_P_ W w)	1388	ev_clear_pending (EV_P_ W w)
1268	{	1389	{
1269	if (w->pending)	1390	if (w->pending)
1270	{	1391	{
1271	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1392	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1272	w->pending = 0;	1393	w->pending = 0;
1273	}	1394	}
1274	}	1395	}
1275		1396
1276	inline void	1397	void inline_speed
1277	ev_start (EV_P_ W w, int active)	1398	ev_start (EV_P_ W w, int active)
1278	{	1399	{
1279	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1400	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1280	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1401	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1281		1402
1282	w->active = active;	1403	w->active = active;
1283	ev_ref (EV_A);	1404	ev_ref (EV_A);
1284	}	1405	}
1285		1406
1286	inline void	1407	void inline_size
1287	ev_stop (EV_P_ W w)	1408	ev_stop (EV_P_ W w)
1288	{	1409	{
1289	ev_unref (EV_A);	1410	ev_unref (EV_A);
1290	w->active = 0;	1411	w->active = 0;
1291	}	1412	}
1292		1413
1293	/*****************************************************************************/	1414	/*****************************************************************************/
1294		1415
1295	void	1416	void
1296	ev_io_start (EV_P_ struct ev_io *w)	1417	ev_io_start (EV_P_ ev_io *w)
1297	{	1418	{
1298	int fd = w->fd;	1419	int fd = w->fd;
1299		1420
1300	if (ev_is_active (w))	1421	if (expect_false (ev_is_active (w)))
1301	return;	1422	return;
1302		1423
1303	assert (("ev_io_start called with negative fd", fd >= 0));	1424	assert (("ev_io_start called with negative fd", fd >= 0));
1304		1425
1305	ev_start (EV_A_ (W)w, 1);	1426	ev_start (EV_A_ (W)w, 1);
…		…
1308		1429
1309	fd_change (EV_A_ fd);	1430	fd_change (EV_A_ fd);
1310	}	1431	}
1311		1432
1312	void	1433	void
1313	ev_io_stop (EV_P_ struct ev_io *w)	1434	ev_io_stop (EV_P_ ev_io *w)
1314	{	1435	{
1315	ev_clear_pending (EV_A_ (W)w);	1436	ev_clear_pending (EV_A_ (W)w);
1316	if (!ev_is_active (w))	1437	if (expect_false (!ev_is_active (w)))
1317	return;	1438	return;
1318		1439
1319	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1440	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1320		1441
1321	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1442	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
…		…
1323		1444
1324	fd_change (EV_A_ w->fd);	1445	fd_change (EV_A_ w->fd);
1325	}	1446	}
1326		1447
1327	void	1448	void
1328	ev_timer_start (EV_P_ struct ev_timer *w)	1449	ev_timer_start (EV_P_ ev_timer *w)
1329	{	1450	{
1330	if (ev_is_active (w))	1451	if (expect_false (ev_is_active (w)))
1331	return;	1452	return;
1332		1453
1333	((WT)w)->at += mn_now;	1454	((WT)w)->at += mn_now;
1334		1455
1335	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1456	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1336		1457
1337	ev_start (EV_A_ (W)w, ++timercnt);	1458	ev_start (EV_A_ (W)w, ++timercnt);
1338	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1459	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1339	timers [timercnt - 1] = w;	1460	timers [timercnt - 1] = w;
1340	upheap ((WT *)timers, timercnt - 1);	1461	upheap ((WT *)timers, timercnt - 1);
1341		1462
1342	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1463	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1343	}	1464	}
1344		1465
1345	void	1466	void
1346	ev_timer_stop (EV_P_ struct ev_timer *w)	1467	ev_timer_stop (EV_P_ ev_timer *w)
1347	{	1468	{
1348	ev_clear_pending (EV_A_ (W)w);	1469	ev_clear_pending (EV_A_ (W)w);
1349	if (!ev_is_active (w))	1470	if (expect_false (!ev_is_active (w)))
1350	return;	1471	return;
1351		1472
1352	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1473	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1353		1474
1354	if (((W)w)->active < timercnt--)	1475	if (expect_true (((W)w)->active < timercnt--))
1355	{	1476	{
1356	timers [((W)w)->active - 1] = timers [timercnt];	1477	timers [((W)w)->active - 1] = timers [timercnt];
1357	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1478	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1358	}	1479	}
1359		1480
1360	((WT)w)->at -= mn_now;	1481	((WT)w)->at -= mn_now;
1361		1482
1362	ev_stop (EV_A_ (W)w);	1483	ev_stop (EV_A_ (W)w);
1363	}	1484	}
1364		1485
1365	void	1486	void
1366	ev_timer_again (EV_P_ struct ev_timer *w)	1487	ev_timer_again (EV_P_ ev_timer *w)
1367	{	1488	{
1368	if (ev_is_active (w))	1489	if (ev_is_active (w))
1369	{	1490	{
1370	if (w->repeat)	1491	if (w->repeat)
		1492	{
		1493	((WT)w)->at = mn_now + w->repeat;
1371	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1494	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
		1495	}
1372	else	1496	else
1373	ev_timer_stop (EV_A_ w);	1497	ev_timer_stop (EV_A_ w);
1374	}	1498	}
1375	else if (w->repeat)	1499	else if (w->repeat)
		1500	{
		1501	w->at = w->repeat;
1376	ev_timer_start (EV_A_ w);	1502	ev_timer_start (EV_A_ w);
		1503	}
1377	}	1504	}
1378		1505
1379	#if EV_PERIODICS	1506	#if EV_PERIODIC_ENABLE
1380	void	1507	void
1381	ev_periodic_start (EV_P_ struct ev_periodic *w)	1508	ev_periodic_start (EV_P_ ev_periodic *w)
1382	{	1509	{
1383	if (ev_is_active (w))	1510	if (expect_false (ev_is_active (w)))
1384	return;	1511	return;
1385		1512
1386	if (w->reschedule_cb)	1513	if (w->reschedule_cb)
1387	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1514	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1388	else if (w->interval)	1515	else if (w->interval)
…		…
1391	/* this formula differs from the one in periodic_reify because we do not always round up */	1518	/* 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;	1519	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1393	}	1520	}
1394		1521
1395	ev_start (EV_A_ (W)w, ++periodiccnt);	1522	ev_start (EV_A_ (W)w, ++periodiccnt);
1396	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1523	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1397	periodics [periodiccnt - 1] = w;	1524	periodics [periodiccnt - 1] = w;
1398	upheap ((WT *)periodics, periodiccnt - 1);	1525	upheap ((WT *)periodics, periodiccnt - 1);
1399		1526
1400	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1527	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1401	}	1528	}
1402		1529
1403	void	1530	void
1404	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1531	ev_periodic_stop (EV_P_ ev_periodic *w)
1405	{	1532	{
1406	ev_clear_pending (EV_A_ (W)w);	1533	ev_clear_pending (EV_A_ (W)w);
1407	if (!ev_is_active (w))	1534	if (expect_false (!ev_is_active (w)))
1408	return;	1535	return;
1409		1536
1410	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1537	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1411		1538
1412	if (((W)w)->active < periodiccnt--)	1539	if (expect_true (((W)w)->active < periodiccnt--))
1413	{	1540	{
1414	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1541	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1415	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1542	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1416	}	1543	}
1417		1544
1418	ev_stop (EV_A_ (W)w);	1545	ev_stop (EV_A_ (W)w);
1419	}	1546	}
1420		1547
1421	void	1548	void
1422	ev_periodic_again (EV_P_ struct ev_periodic *w)	1549	ev_periodic_again (EV_P_ ev_periodic *w)
1423	{	1550	{
1424	/* TODO: use adjustheap and recalculation */	1551	/* TODO: use adjustheap and recalculation */
1425	ev_periodic_stop (EV_A_ w);	1552	ev_periodic_stop (EV_A_ w);
1426	ev_periodic_start (EV_A_ w);	1553	ev_periodic_start (EV_A_ w);
1427	}	1554	}
1428	#endif	1555	#endif
1429		1556
1430	void	1557	void
1431	ev_idle_start (EV_P_ struct ev_idle *w)	1558	ev_idle_start (EV_P_ ev_idle *w)
1432	{	1559	{
1433	if (ev_is_active (w))	1560	if (expect_false (ev_is_active (w)))
1434	return;	1561	return;
1435		1562
1436	ev_start (EV_A_ (W)w, ++idlecnt);	1563	ev_start (EV_A_ (W)w, ++idlecnt);
1437	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));	1564	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1438	idles [idlecnt - 1] = w;	1565	idles [idlecnt - 1] = w;
1439	}	1566	}
1440		1567
1441	void	1568	void
1442	ev_idle_stop (EV_P_ struct ev_idle *w)	1569	ev_idle_stop (EV_P_ ev_idle *w)
1443	{	1570	{
1444	ev_clear_pending (EV_A_ (W)w);	1571	ev_clear_pending (EV_A_ (W)w);
1445	if (ev_is_active (w))	1572	if (expect_false (!ev_is_active (w)))
1446	return;	1573	return;
1447		1574
		1575	{
		1576	int active = ((W)w)->active;
1448	idles [((W)w)->active - 1] = idles [--idlecnt];	1577	idles [active - 1] = idles [--idlecnt];
		1578	((W)idles [active - 1])->active = active;
		1579	}
		1580
1449	ev_stop (EV_A_ (W)w);	1581	ev_stop (EV_A_ (W)w);
1450	}	1582	}
1451		1583
1452	void	1584	void
1453	ev_prepare_start (EV_P_ struct ev_prepare *w)	1585	ev_prepare_start (EV_P_ ev_prepare *w)
1454	{	1586	{
1455	if (ev_is_active (w))	1587	if (expect_false (ev_is_active (w)))
1456	return;	1588	return;
1457		1589
1458	ev_start (EV_A_ (W)w, ++preparecnt);	1590	ev_start (EV_A_ (W)w, ++preparecnt);
1459	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));	1591	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1460	prepares [preparecnt - 1] = w;	1592	prepares [preparecnt - 1] = w;
1461	}	1593	}
1462		1594
1463	void	1595	void
1464	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1596	ev_prepare_stop (EV_P_ ev_prepare *w)
1465	{	1597	{
1466	ev_clear_pending (EV_A_ (W)w);	1598	ev_clear_pending (EV_A_ (W)w);
1467	if (ev_is_active (w))	1599	if (expect_false (!ev_is_active (w)))
1468	return;	1600	return;
1469		1601
		1602	{
		1603	int active = ((W)w)->active;
1470	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1604	prepares [active - 1] = prepares [--preparecnt];
		1605	((W)prepares [active - 1])->active = active;
		1606	}
		1607
1471	ev_stop (EV_A_ (W)w);	1608	ev_stop (EV_A_ (W)w);
1472	}	1609	}
1473		1610
1474	void	1611	void
1475	ev_check_start (EV_P_ struct ev_check *w)	1612	ev_check_start (EV_P_ ev_check *w)
1476	{	1613	{
1477	if (ev_is_active (w))	1614	if (expect_false (ev_is_active (w)))
1478	return;	1615	return;
1479		1616
1480	ev_start (EV_A_ (W)w, ++checkcnt);	1617	ev_start (EV_A_ (W)w, ++checkcnt);
1481	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));	1618	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1482	checks [checkcnt - 1] = w;	1619	checks [checkcnt - 1] = w;
1483	}	1620	}
1484		1621
1485	void	1622	void
1486	ev_check_stop (EV_P_ struct ev_check *w)	1623	ev_check_stop (EV_P_ ev_check *w)
1487	{	1624	{
1488	ev_clear_pending (EV_A_ (W)w);	1625	ev_clear_pending (EV_A_ (W)w);
1489	if (!ev_is_active (w))	1626	if (expect_false (!ev_is_active (w)))
1490	return;	1627	return;
1491		1628
		1629	{
		1630	int active = ((W)w)->active;
1492	checks [((W)w)->active - 1] = checks [--checkcnt];	1631	checks [active - 1] = checks [--checkcnt];
		1632	((W)checks [active - 1])->active = active;
		1633	}
		1634
1493	ev_stop (EV_A_ (W)w);	1635	ev_stop (EV_A_ (W)w);
1494	}	1636	}
1495		1637
1496	#ifndef SA_RESTART	1638	#ifndef SA_RESTART
1497	# define SA_RESTART 0	1639	# define SA_RESTART 0
1498	#endif	1640	#endif
1499		1641
1500	void	1642	void
1501	ev_signal_start (EV_P_ struct ev_signal *w)	1643	ev_signal_start (EV_P_ ev_signal *w)
1502	{	1644	{
1503	#if EV_MULTIPLICITY	1645	#if EV_MULTIPLICITY
1504	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1646	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1505	#endif	1647	#endif
1506	if (ev_is_active (w))	1648	if (expect_false (ev_is_active (w)))
1507	return;	1649	return;
1508		1650
1509	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1651	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1510		1652
1511	ev_start (EV_A_ (W)w, 1);	1653	ev_start (EV_A_ (W)w, 1);
1512	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1654	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1513	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1655	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1514		1656
1515	if (!((WL)w)->next)	1657	if (!((WL)w)->next)
1516	{	1658	{
1517	#if WIN32	1659	#if _WIN32
1518	signal (w->signum, sighandler);	1660	signal (w->signum, sighandler);
1519	#else	1661	#else
1520	struct sigaction sa;	1662	struct sigaction sa;
1521	sa.sa_handler = sighandler;	1663	sa.sa_handler = sighandler;
1522	sigfillset (&sa.sa_mask);	1664	sigfillset (&sa.sa_mask);
…		…
1525	#endif	1667	#endif
1526	}	1668	}
1527	}	1669	}
1528		1670
1529	void	1671	void
1530	ev_signal_stop (EV_P_ struct ev_signal *w)	1672	ev_signal_stop (EV_P_ ev_signal *w)
1531	{	1673	{
1532	ev_clear_pending (EV_A_ (W)w);	1674	ev_clear_pending (EV_A_ (W)w);
1533	if (!ev_is_active (w))	1675	if (expect_false (!ev_is_active (w)))
1534	return;	1676	return;
1535		1677
1536	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1678	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1537	ev_stop (EV_A_ (W)w);	1679	ev_stop (EV_A_ (W)w);
1538		1680
1539	if (!signals [w->signum - 1].head)	1681	if (!signals [w->signum - 1].head)
1540	signal (w->signum, SIG_DFL);	1682	signal (w->signum, SIG_DFL);
1541	}	1683	}
1542		1684
1543	void	1685	void
1544	ev_child_start (EV_P_ struct ev_child *w)	1686	ev_child_start (EV_P_ ev_child *w)
1545	{	1687	{
1546	#if EV_MULTIPLICITY	1688	#if EV_MULTIPLICITY
1547	assert (("child watchers are only supported in the default loop", loop == default_loop));	1689	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1548	#endif	1690	#endif
1549	if (ev_is_active (w))	1691	if (expect_false (ev_is_active (w)))
1550	return;	1692	return;
1551		1693
1552	ev_start (EV_A_ (W)w, 1);	1694	ev_start (EV_A_ (W)w, 1);
1553	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1695	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1554	}	1696	}
1555		1697
1556	void	1698	void
1557	ev_child_stop (EV_P_ struct ev_child *w)	1699	ev_child_stop (EV_P_ ev_child *w)
1558	{	1700	{
1559	ev_clear_pending (EV_A_ (W)w);	1701	ev_clear_pending (EV_A_ (W)w);
1560	if (!ev_is_active (w))	1702	if (expect_false (!ev_is_active (w)))
1561	return;	1703	return;
1562		1704
1563	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1705	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1564	ev_stop (EV_A_ (W)w);	1706	ev_stop (EV_A_ (W)w);
1565	}	1707	}
1566		1708
		1709	#if EV_EMBED_ENABLE
		1710	void noinline
		1711	ev_embed_sweep (EV_P_ ev_embed *w)
		1712	{
		1713	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1714	}
		1715
		1716	static void
		1717	embed_cb (EV_P_ ev_io *io, int revents)
		1718	{
		1719	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		1720
		1721	if (ev_cb (w))
		1722	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1723	else
		1724	ev_embed_sweep (loop, w);
		1725	}
		1726
		1727	void
		1728	ev_embed_start (EV_P_ ev_embed *w)
		1729	{
		1730	if (expect_false (ev_is_active (w)))
		1731	return;
		1732
		1733	{
		1734	struct ev_loop *loop = w->loop;
		1735	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1736	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1737	}
		1738
		1739	ev_set_priority (&w->io, ev_priority (w));
		1740	ev_io_start (EV_A_ &w->io);
		1741
		1742	ev_start (EV_A_ (W)w, 1);
		1743	}
		1744
		1745	void
		1746	ev_embed_stop (EV_P_ ev_embed *w)
		1747	{
		1748	ev_clear_pending (EV_A_ (W)w);
		1749	if (expect_false (!ev_is_active (w)))
		1750	return;
		1751
		1752	ev_io_stop (EV_A_ &w->io);
		1753
		1754	ev_stop (EV_A_ (W)w);
		1755	}
		1756	#endif
		1757
		1758	#if EV_STAT_ENABLE
		1759
		1760	# ifdef _WIN32
		1761	# define lstat(a,b) stat(a,b)
		1762	# endif
		1763
		1764	void
		1765	ev_stat_stat (EV_P_ ev_stat *w)
		1766	{
		1767	if (lstat (w->path, &w->attr) < 0)
		1768	w->attr.st_nlink = 0;
		1769	else if (!w->attr.st_nlink)
		1770	w->attr.st_nlink = 1;
		1771	}
		1772
		1773	static void
		1774	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1775	{
		1776	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1777
		1778	/* we copy this here each the time so that */
		1779	/* prev has the old value when the callback gets invoked */
		1780	w->prev = w->attr;
		1781	ev_stat_stat (EV_A_ w);
		1782
		1783	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1784	ev_feed_event (EV_A_ w, EV_STAT);
		1785	}
		1786
		1787	void
		1788	ev_stat_start (EV_P_ ev_stat *w)
		1789	{
		1790	if (expect_false (ev_is_active (w)))
		1791	return;
		1792
		1793	/* since we use memcmp, we need to clear any padding data etc. */
		1794	memset (&w->prev, 0, sizeof (ev_statdata));
		1795	memset (&w->attr, 0, sizeof (ev_statdata));
		1796
		1797	ev_stat_stat (EV_A_ w);
		1798
		1799	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1800	ev_set_priority (&w->timer, ev_priority (w));
		1801	ev_timer_start (EV_A_ &w->timer);
		1802
		1803	ev_start (EV_A_ (W)w, 1);
		1804	}
		1805
		1806	void
		1807	ev_stat_stop (EV_P_ ev_stat *w)
		1808	{
		1809	ev_clear_pending (EV_A_ (W)w);
		1810	if (expect_false (!ev_is_active (w)))
		1811	return;
		1812
		1813	ev_timer_stop (EV_A_ &w->timer);
		1814
		1815	ev_stop (EV_A_ (W)w);
		1816	}
		1817	#endif
		1818
1567	/*****************************************************************************/	1819	/*****************************************************************************/
1568		1820
1569	struct ev_once	1821	struct ev_once
1570	{	1822	{
1571	struct ev_io io;	1823	ev_io io;
1572	struct ev_timer to;	1824	ev_timer to;
1573	void (*cb)(int revents, void *arg);	1825	void (*cb)(int revents, void *arg);
1574	void *arg;	1826	void *arg;
1575	};	1827	};
1576		1828
1577	static void	1829	static void
…		…
1586		1838
1587	cb (revents, arg);	1839	cb (revents, arg);
1588	}	1840	}
1589		1841
1590	static void	1842	static void
1591	once_cb_io (EV_P_ struct ev_io *w, int revents)	1843	once_cb_io (EV_P_ ev_io *w, int revents)
1592	{	1844	{
1593	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1845	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1594	}	1846	}
1595		1847
1596	static void	1848	static void
1597	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1849	once_cb_to (EV_P_ ev_timer *w, int revents)
1598	{	1850	{
1599	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1851	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1600	}	1852	}
1601		1853
1602	void	1854	void
1603	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1855	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1604	{	1856	{
1605	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	1857	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1606		1858
1607	if (!once)	1859	if (expect_false (!once))
		1860	{
1608	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1861	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1609	else	1862	return;
1610	{	1863	}
		1864
1611	once->cb = cb;	1865	once->cb = cb;
1612	once->arg = arg;	1866	once->arg = arg;
1613		1867
1614	ev_init (&once->io, once_cb_io);	1868	ev_init (&once->io, once_cb_io);
1615	if (fd >= 0)	1869	if (fd >= 0)
1616	{	1870	{
1617	ev_io_set (&once->io, fd, events);	1871	ev_io_set (&once->io, fd, events);
1618	ev_io_start (EV_A_ &once->io);	1872	ev_io_start (EV_A_ &once->io);
1619	}	1873	}
1620		1874
1621	ev_init (&once->to, once_cb_to);	1875	ev_init (&once->to, once_cb_to);
1622	if (timeout >= 0.)	1876	if (timeout >= 0.)
1623	{	1877	{
1624	ev_timer_set (&once->to, timeout, 0.);	1878	ev_timer_set (&once->to, timeout, 0.);
1625	ev_timer_start (EV_A_ &once->to);	1879	ev_timer_start (EV_A_ &once->to);
1626	}
1627	}	1880	}
1628	}	1881	}
1629		1882
1630	#ifdef __cplusplus	1883	#ifdef __cplusplus
1631	}	1884	}

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