ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.97 by root, Sun Nov 11 01:53:07 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
		222	#ifdef _WIN32
166	#include "ev_win32.c"	223	# include "ev_win32.c"
		224	#endif
167		225
168	/*****************************************************************************/	226	/*****************************************************************************/
169		227
170	static void (*syserr_cb)(const char *msg);	228	static void (*syserr_cb)(const char *msg);
171		229
…		…
218	typedef struct	276	typedef struct
219	{	277	{
220	WL head;	278	WL head;
221	unsigned char events;	279	unsigned char events;
222	unsigned char reify;	280	unsigned char reify;
		281	#if EV_SELECT_IS_WINSOCKET
		282	SOCKET handle;
		283	#endif
223	} ANFD;	284	} ANFD;
224		285
225	typedef struct	286	typedef struct
226	{	287	{
227	W w;	288	W w;
…		…
231	#if EV_MULTIPLICITY	292	#if EV_MULTIPLICITY
232		293
233	struct ev_loop	294	struct ev_loop
234	{	295	{
235	ev_tstamp ev_rt_now;	296	ev_tstamp ev_rt_now;
		297	#define ev_rt_now ((loop)->ev_rt_now)
236	#define VAR(name,decl) decl;	298	#define VAR(name,decl) decl;
237	#include "ev_vars.h"	299	#include "ev_vars.h"
238	#undef VAR	300	#undef VAR
239	};	301	};
240	#include "ev_wrap.h"	302	#include "ev_wrap.h"
241		303
242	struct ev_loop default_loop_struct;	304	static struct ev_loop default_loop_struct;
243	static struct ev_loop *default_loop;	305	struct ev_loop *ev_default_loop_ptr;
244		306
245	#else	307	#else
246		308
247	ev_tstamp ev_rt_now;	309	ev_tstamp ev_rt_now;
248	#define VAR(name,decl) static decl;	310	#define VAR(name,decl) static decl;
249	#include "ev_vars.h"	311	#include "ev_vars.h"
250	#undef VAR	312	#undef VAR
251		313
252	static int default_loop;	314	static int ev_default_loop_ptr;
253		315
254	#endif	316	#endif
255		317
256	/*****************************************************************************/	318	/*****************************************************************************/
257		319
258	ev_tstamp	320	ev_tstamp noinline
259	ev_time (void)	321	ev_time (void)
260	{	322	{
261	#if EV_USE_REALTIME	323	#if EV_USE_REALTIME
262	struct timespec ts;	324	struct timespec ts;
263	clock_gettime (CLOCK_REALTIME, &ts);	325	clock_gettime (CLOCK_REALTIME, &ts);
…		…
267	gettimeofday (&tv, 0);	329	gettimeofday (&tv, 0);
268	return tv.tv_sec + tv.tv_usec * 1e-6;	330	return tv.tv_sec + tv.tv_usec * 1e-6;
269	#endif	331	#endif
270	}	332	}
271		333
272	inline ev_tstamp	334	ev_tstamp inline_size
273	get_clock (void)	335	get_clock (void)
274	{	336	{
275	#if EV_USE_MONOTONIC	337	#if EV_USE_MONOTONIC
276	if (expect_true (have_monotonic))	338	if (expect_true (have_monotonic))
277	{	339	{
…		…
290	{	352	{
291	return ev_rt_now;	353	return ev_rt_now;
292	}	354	}
293	#endif	355	#endif
294		356
295	#define array_roundsize(type,n) ((n) | 4 & ~3)	357	#define array_roundsize(type,n) (((n) | 4) & ~3)
296		358
297	#define array_needsize(type,base,cur,cnt,init) \	359	#define array_needsize(type,base,cur,cnt,init) \
298	if (expect_false ((cnt) > cur)) \	360	if (expect_false ((cnt) > cur)) \
299	{ \	361	{ \
300	int newcnt = cur; \	362	int newcnt = cur; \
…		…
315	stem ## max = array_roundsize (stem ## cnt >> 1); \	377	stem ## max = array_roundsize (stem ## cnt >> 1); \
316	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	378	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
317	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	379	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
318	}	380	}
319		381
320	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
321	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
322	#define array_free_microshit(stem) \
323	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
324
325	#define array_free(stem, idx) \	382	#define array_free(stem, idx) \
326	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;
327		384
328	/*****************************************************************************/	385	/*****************************************************************************/
329		386
330	static void	387	void inline_size
331	anfds_init (ANFD *base, int count)	388	anfds_init (ANFD *base, int count)
332	{	389	{
333	while (count--)	390	while (count--)
334	{	391	{
335	base->head = 0;	392	base->head = 0;
…		…
338		395
339	++base;	396	++base;
340	}	397	}
341	}	398	}
342		399
343	void	400	void noinline
344	ev_feed_event (EV_P_ void *w, int revents)	401	ev_feed_event (EV_P_ void *w, int revents)
345	{	402	{
346	W w_ = (W)w;	403	W w_ = (W)w;
347		404
348	if (w_->pending)	405	if (expect_false (w_->pending))
349	{	406	{
350	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;	407	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
351	return;	408	return;
352	}	409	}
353		410
354	w_->pending = ++pendingcnt [ABSPRI (w_)];	411	w_->pending = ++pendingcnt [ABSPRI (w_)];
355	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);
356	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;	413	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
357	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;	414	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
358	}	415	}
359		416
360	static void	417	static void
…		…
364		421
365	for (i = 0; i < eventcnt; ++i)	422	for (i = 0; i < eventcnt; ++i)
366	ev_feed_event (EV_A_ events [i], type);	423	ev_feed_event (EV_A_ events [i], type);
367	}	424	}
368		425
369	inline void	426	void inline_speed
370	fd_event (EV_P_ int fd, int revents)	427	fd_event (EV_P_ int fd, int revents)
371	{	428	{
372	ANFD *anfd = anfds + fd;	429	ANFD *anfd = anfds + fd;
373	struct ev_io *w;	430	ev_io *w;
374		431
375	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)
376	{	433	{
377	int ev = w->events & revents;	434	int ev = w->events & revents;
378		435
379	if (ev)	436	if (ev)
380	ev_feed_event (EV_A_ (W)w, ev);	437	ev_feed_event (EV_A_ (W)w, ev);
…		…
387	fd_event (EV_A_ fd, revents);	444	fd_event (EV_A_ fd, revents);
388	}	445	}
389		446
390	/*****************************************************************************/	447	/*****************************************************************************/
391		448
392	static void	449	void inline_size
393	fd_reify (EV_P)	450	fd_reify (EV_P)
394	{	451	{
395	int i;	452	int i;
396		453
397	for (i = 0; i < fdchangecnt; ++i)	454	for (i = 0; i < fdchangecnt; ++i)
398	{	455	{
399	int fd = fdchanges [i];	456	int fd = fdchanges [i];
400	ANFD *anfd = anfds + fd;	457	ANFD *anfd = anfds + fd;
401	struct ev_io *w;	458	ev_io *w;
402		459
403	int events = 0;	460	int events = 0;
404		461
405	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)
406	events |= w->events;	463	events |= w->events;
407		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
408	anfd->reify = 0;	474	anfd->reify = 0;
409		475
410	method_modify (EV_A_ fd, anfd->events, events);	476	backend_modify (EV_A_ fd, anfd->events, events);
411	anfd->events = events;	477	anfd->events = events;
412	}	478	}
413		479
414	fdchangecnt = 0;	480	fdchangecnt = 0;
415	}	481	}
416		482
417	static void	483	void inline_size
418	fd_change (EV_P_ int fd)	484	fd_change (EV_P_ int fd)
419	{	485	{
420	if (anfds [fd].reify)	486	if (expect_false (anfds [fd].reify))
421	return;	487	return;
422		488
423	anfds [fd].reify = 1;	489	anfds [fd].reify = 1;
424		490
425	++fdchangecnt;	491	++fdchangecnt;
426	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	492	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
427	fdchanges [fdchangecnt - 1] = fd;	493	fdchanges [fdchangecnt - 1] = fd;
428	}	494	}
429		495
430	static void	496	void inline_speed
431	fd_kill (EV_P_ int fd)	497	fd_kill (EV_P_ int fd)
432	{	498	{
433	struct ev_io *w;	499	ev_io *w;
434		500
435	while ((w = (struct ev_io *)anfds [fd].head))	501	while ((w = (ev_io *)anfds [fd].head))
436	{	502	{
437	ev_io_stop (EV_A_ w);	503	ev_io_stop (EV_A_ w);
438	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);
439	}	505	}
440	}	506	}
441		507
442	static int	508	int inline_size
443	fd_valid (int fd)	509	fd_valid (int fd)
444	{	510	{
445	#ifdef WIN32	511	#ifdef _WIN32
446	return !!win32_get_osfhandle (fd);	512	return _get_osfhandle (fd) != -1;
447	#else	513	#else
448	return fcntl (fd, F_GETFD) != -1;	514	return fcntl (fd, F_GETFD) != -1;
449	#endif	515	#endif
450	}	516	}
451		517
452	/* called on EBADF to verify fds */	518	/* called on EBADF to verify fds */
453	static void	519	static void noinline
454	fd_ebadf (EV_P)	520	fd_ebadf (EV_P)
455	{	521	{
456	int fd;	522	int fd;
457		523
458	for (fd = 0; fd < anfdmax; ++fd)	524	for (fd = 0; fd < anfdmax; ++fd)
…		…
460	if (!fd_valid (fd) == -1 && errno == EBADF)	526	if (!fd_valid (fd) == -1 && errno == EBADF)
461	fd_kill (EV_A_ fd);	527	fd_kill (EV_A_ fd);
462	}	528	}
463		529
464	/* 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 */
465	static void	531	static void noinline
466	fd_enomem (EV_P)	532	fd_enomem (EV_P)
467	{	533	{
468	int fd;	534	int fd;
469		535
470	for (fd = anfdmax; fd--; )	536	for (fd = anfdmax; fd--; )
…		…
473	fd_kill (EV_A_ fd);	539	fd_kill (EV_A_ fd);
474	return;	540	return;
475	}	541	}
476	}	542	}
477		543
478	/* 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 */
479	static void	545	static void noinline
480	fd_rearm_all (EV_P)	546	fd_rearm_all (EV_P)
481	{	547	{
482	int fd;	548	int fd;
483		549
484	/* 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 */
…		…
490	}	556	}
491	}	557	}
492		558
493	/*****************************************************************************/	559	/*****************************************************************************/
494		560
495	static void	561	void inline_speed
496	upheap (WT *heap, int k)	562	upheap (WT *heap, int k)
497	{	563	{
498	WT w = heap [k];	564	WT w = heap [k];
499		565
500	while (k && heap [k >> 1]->at > w->at)	566	while (k && heap [k >> 1]->at > w->at)
…		…
507	heap [k] = w;	573	heap [k] = w;
508	((W)heap [k])->active = k + 1;	574	((W)heap [k])->active = k + 1;
509		575
510	}	576	}
511		577
512	static void	578	void inline_speed
513	downheap (WT *heap, int N, int k)	579	downheap (WT *heap, int N, int k)
514	{	580	{
515	WT w = heap [k];	581	WT w = heap [k];
516		582
517	while (k < (N >> 1))	583	while (k < (N >> 1))
…		…
531		597
532	heap [k] = w;	598	heap [k] = w;
533	((W)heap [k])->active = k + 1;	599	((W)heap [k])->active = k + 1;
534	}	600	}
535		601
536	inline void	602	void inline_size
537	adjustheap (WT *heap, int N, int k, ev_tstamp at)	603	adjustheap (WT *heap, int N, int k)
538	{	604	{
539	ev_tstamp old_at = heap [k]->at;	605	upheap (heap, k);
540	heap [k]->at = at;
541
542	if (old_at < at)
543	downheap (heap, N, k);	606	downheap (heap, N, k);
544	else
545	upheap (heap, k);
546	}	607	}
547		608
548	/*****************************************************************************/	609	/*****************************************************************************/
549		610
550	typedef struct	611	typedef struct
…		…
556	static ANSIG *signals;	617	static ANSIG *signals;
557	static int signalmax;	618	static int signalmax;
558		619
559	static int sigpipe [2];	620	static int sigpipe [2];
560	static sig_atomic_t volatile gotsig;	621	static sig_atomic_t volatile gotsig;
561	static struct ev_io sigev;	622	static ev_io sigev;
562		623
563	static void	624	void inline_size
564	signals_init (ANSIG *base, int count)	625	signals_init (ANSIG *base, int count)
565	{	626	{
566	while (count--)	627	while (count--)
567	{	628	{
568	base->head = 0;	629	base->head = 0;
…		…
573	}	634	}
574		635
575	static void	636	static void
576	sighandler (int signum)	637	sighandler (int signum)
577	{	638	{
578	#if WIN32	639	#if _WIN32
579	signal (signum, sighandler);	640	signal (signum, sighandler);
580	#endif	641	#endif
581		642
582	signals [signum - 1].gotsig = 1;	643	signals [signum - 1].gotsig = 1;
583		644
584	if (!gotsig)	645	if (!gotsig)
585	{	646	{
586	int old_errno = errno;	647	int old_errno = errno;
587	gotsig = 1;	648	gotsig = 1;
588	#ifdef WIN32
589	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
590	#else
591	write (sigpipe [1], &signum, 1);	649	write (sigpipe [1], &signum, 1);
592	#endif
593	errno = old_errno;	650	errno = old_errno;
594	}	651	}
595	}	652	}
596		653
597	void	654	void noinline
598	ev_feed_signal_event (EV_P_ int signum)	655	ev_feed_signal_event (EV_P_ int signum)
599	{	656	{
600	WL w;	657	WL w;
601		658
602	#if EV_MULTIPLICITY	659	#if EV_MULTIPLICITY
603	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));
604	#endif	661	#endif
605		662
606	--signum;	663	--signum;
607		664
608	if (signum < 0 || signum >= signalmax)	665	if (signum < 0 || signum >= signalmax)
…		…
613	for (w = signals [signum].head; w; w = w->next)	670	for (w = signals [signum].head; w; w = w->next)
614	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	671	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
615	}	672	}
616		673
617	static void	674	static void
618	sigcb (EV_P_ struct ev_io *iow, int revents)	675	sigcb (EV_P_ ev_io *iow, int revents)
619	{	676	{
620	int signum;	677	int signum;
621		678
622	#ifdef WIN32
623	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
624	#else
625	read (sigpipe [0], &revents, 1);	679	read (sigpipe [0], &revents, 1);
626	#endif
627	gotsig = 0;	680	gotsig = 0;
628		681
629	for (signum = signalmax; signum--; )	682	for (signum = signalmax; signum--; )
630	if (signals [signum].gotsig)	683	if (signals [signum].gotsig)
631	ev_feed_signal_event (EV_A_ signum + 1);	684	ev_feed_signal_event (EV_A_ signum + 1);
632	}	685	}
633		686
634	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
635	siginit (EV_P)	700	siginit (EV_P)
636	{	701	{
637	#ifndef WIN32	702	fd_intern (sigpipe [0]);
638	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	703	fd_intern (sigpipe [1]);
639	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
640
641	/* rather than sort out wether we really need nb, set it */
642	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
643	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
644	#endif
645		704
646	ev_io_set (&sigev, sigpipe [0], EV_READ);	705	ev_io_set (&sigev, sigpipe [0], EV_READ);
647	ev_io_start (EV_A_ &sigev);	706	ev_io_start (EV_A_ &sigev);
648	ev_unref (EV_A); /* child watcher should not keep loop alive */	707	ev_unref (EV_A); /* child watcher should not keep loop alive */
649	}	708	}
650		709
651	/*****************************************************************************/	710	/*****************************************************************************/
652		711
653	static struct ev_child *childs [PID_HASHSIZE];	712	static ev_child *childs [PID_HASHSIZE];
654		713
655	#ifndef WIN32	714	#ifndef _WIN32
656		715
657	static struct ev_signal childev;	716	static ev_signal childev;
658		717
659	#ifndef WCONTINUED	718	#ifndef WCONTINUED
660	# define WCONTINUED 0	719	# define WCONTINUED 0
661	#endif	720	#endif
662		721
663	static void	722	void inline_speed
664	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)
665	{	724	{
666	struct ev_child *w;	725	ev_child *w;
667		726
668	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)
669	if (w->pid == pid || !w->pid)	728	if (w->pid == pid || !w->pid)
670	{	729	{
671	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	730	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
672	w->rpid = pid;	731	w->rpid = pid;
673	w->rstatus = status;	732	w->rstatus = status;
674	ev_feed_event (EV_A_ (W)w, EV_CHILD);	733	ev_feed_event (EV_A_ (W)w, EV_CHILD);
675	}	734	}
676	}	735	}
677		736
678	static void	737	static void
679	childcb (EV_P_ struct ev_signal *sw, int revents)	738	childcb (EV_P_ ev_signal *sw, int revents)
680	{	739	{
681	int pid, status;	740	int pid, status;
682		741
683	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	742	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
684	{	743	{
685	/* 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 */
686	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	746	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
687		747
688	child_reap (EV_A_ sw, pid, pid, status);	748	child_reap (EV_A_ sw, pid, pid, status);
689	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 */
690	}	750	}
691	}	751	}
692		752
693	#endif	753	#endif
694		754
695	/*****************************************************************************/	755	/*****************************************************************************/
696		756
		757	#if EV_USE_PORT
		758	# include "ev_port.c"
		759	#endif
697	#if EV_USE_KQUEUE	760	#if EV_USE_KQUEUE
698	# include "ev_kqueue.c"	761	# include "ev_kqueue.c"
699	#endif	762	#endif
700	#if EV_USE_EPOLL	763	#if EV_USE_EPOLL
701	# include "ev_epoll.c"	764	# include "ev_epoll.c"
…		…
718	{	781	{
719	return EV_VERSION_MINOR;	782	return EV_VERSION_MINOR;
720	}	783	}
721		784
722	/* 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 */
723	static int	786	int inline_size
724	enable_secure (void)	787	enable_secure (void)
725	{	788	{
726	#ifdef WIN32	789	#ifdef _WIN32
727	return 0;	790	return 0;
728	#else	791	#else
729	return getuid () != geteuid ()	792	return getuid () != geteuid ()
730	|| getgid () != getegid ();	793	|| getgid () != getegid ();
731	#endif	794	#endif
732	}	795	}
733		796
734	int	797	unsigned int
735	ev_method (EV_P)	798	ev_supported_backends (void)
736	{	799	{
737	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;
738	}	841	}
739		842
740	static void	843	static void
741	loop_init (EV_P_ int methods)	844	loop_init (EV_P_ unsigned int flags)
742	{	845	{
743	if (!method)	846	if (!backend)
744	{	847	{
745	#if EV_USE_MONOTONIC	848	#if EV_USE_MONOTONIC
746	{	849	{
747	struct timespec ts;	850	struct timespec ts;
748	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	851	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
753	ev_rt_now = ev_time ();	856	ev_rt_now = ev_time ();
754	mn_now = get_clock ();	857	mn_now = get_clock ();
755	now_floor = mn_now;	858	now_floor = mn_now;
756	rtmn_diff = ev_rt_now - mn_now;	859	rtmn_diff = ev_rt_now - mn_now;
757		860
758	if (methods == EVMETHOD_AUTO)	861	if (!(flags & EVFLAG_NOENV)
759	if (!enable_secure () && getenv ("LIBEV_METHODS"))	862	&& !enable_secure ()
		863	&& getenv ("LIBEV_FLAGS"))
760	methods = atoi (getenv ("LIBEV_METHODS"));	864	flags = atoi (getenv ("LIBEV_FLAGS"));
761	else
762	methods = EVMETHOD_ANY;
763		865
764	method = 0;	866	if (!(flags & 0x0000ffffUL))
765	#if EV_USE_WIN32	867	flags |= ev_recommended_backends ();
766	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);
767	#endif	872	#endif
768	#if EV_USE_KQUEUE	873	#if EV_USE_KQUEUE
769	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	874	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
770	#endif	875	#endif
771	#if EV_USE_EPOLL	876	#if EV_USE_EPOLL
772	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	877	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
773	#endif	878	#endif
774	#if EV_USE_POLL	879	#if EV_USE_POLL
775	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	880	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
776	#endif	881	#endif
777	#if EV_USE_SELECT	882	#if EV_USE_SELECT
778	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	883	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
779	#endif	884	#endif
780		885
781	ev_init (&sigev, sigcb);	886	ev_init (&sigev, sigcb);
782	ev_set_priority (&sigev, EV_MAXPRI);	887	ev_set_priority (&sigev, EV_MAXPRI);
783	}	888	}
784	}	889	}
785		890
786	void	891	static void
787	loop_destroy (EV_P)	892	loop_destroy (EV_P)
788	{	893	{
789	int i;	894	int i;
790		895
791	#if EV_USE_WIN32	896	#if EV_USE_PORT
792	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	897	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
793	#endif	898	#endif
794	#if EV_USE_KQUEUE	899	#if EV_USE_KQUEUE
795	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	900	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
796	#endif	901	#endif
797	#if EV_USE_EPOLL	902	#if EV_USE_EPOLL
798	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	903	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
799	#endif	904	#endif
800	#if EV_USE_POLL	905	#if EV_USE_POLL
801	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	906	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
802	#endif	907	#endif
803	#if EV_USE_SELECT	908	#if EV_USE_SELECT
804	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	909	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
805	#endif	910	#endif
806		911
807	for (i = NUMPRI; i--; )	912	for (i = NUMPRI; i--; )
808	array_free (pending, [i]);	913	array_free (pending, [i]);
809		914
810	/* have to use the microsoft-never-gets-it-right macro */	915	/* have to use the microsoft-never-gets-it-right macro */
811	array_free_microshit (fdchange);	916	array_free (fdchange, EMPTY0);
812	array_free_microshit (timer);	917	array_free (timer, EMPTY0);
813	#if EV_PERIODICS	918	#if EV_PERIODIC_ENABLE
814	array_free_microshit (periodic);	919	array_free (periodic, EMPTY0);
815	#endif	920	#endif
816	array_free_microshit (idle);	921	array_free (idle, EMPTY0);
817	array_free_microshit (prepare);	922	array_free (prepare, EMPTY0);
818	array_free_microshit (check);	923	array_free (check, EMPTY0);
819		924
820	method = 0;	925	backend = 0;
821	}	926	}
822		927
823	static void	928	static void
824	loop_fork (EV_P)	929	loop_fork (EV_P)
825	{	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
826	#if EV_USE_EPOLL	937	#if EV_USE_EPOLL
827	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	938	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
828	#endif
829	#if EV_USE_KQUEUE
830	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
831	#endif	939	#endif
832		940
833	if (ev_is_active (&sigev))	941	if (ev_is_active (&sigev))
834	{	942	{
835	/* default loop */	943	/* default loop */
…		…
848	postfork = 0;	956	postfork = 0;
849	}	957	}
850		958
851	#if EV_MULTIPLICITY	959	#if EV_MULTIPLICITY
852	struct ev_loop *	960	struct ev_loop *
853	ev_loop_new (int methods)	961	ev_loop_new (unsigned int flags)
854	{	962	{
855	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));
856		964
857	memset (loop, 0, sizeof (struct ev_loop));	965	memset (loop, 0, sizeof (struct ev_loop));
858		966
859	loop_init (EV_A_ methods);	967	loop_init (EV_A_ flags);
860		968
861	if (ev_method (EV_A))	969	if (ev_backend (EV_A))
862	return loop;	970	return loop;
863		971
864	return 0;	972	return 0;
865	}	973	}
866		974
…		…
879		987
880	#endif	988	#endif
881		989
882	#if EV_MULTIPLICITY	990	#if EV_MULTIPLICITY
883	struct ev_loop *	991	struct ev_loop *
		992	ev_default_loop_init (unsigned int flags)
884	#else	993	#else
885	int	994	int
		995	ev_default_loop (unsigned int flags)
886	#endif	996	#endif
887	ev_default_loop (int methods)
888	{	997	{
889	if (sigpipe [0] == sigpipe [1])	998	if (sigpipe [0] == sigpipe [1])
890	if (pipe (sigpipe))	999	if (pipe (sigpipe))
891	return 0;	1000	return 0;
892		1001
893	if (!default_loop)	1002	if (!ev_default_loop_ptr)
894	{	1003	{
895	#if EV_MULTIPLICITY	1004	#if EV_MULTIPLICITY
896	struct ev_loop *loop = default_loop = &default_loop_struct;	1005	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
897	#else	1006	#else
898	default_loop = 1;	1007	ev_default_loop_ptr = 1;
899	#endif	1008	#endif
900		1009
901	loop_init (EV_A_ methods);	1010	loop_init (EV_A_ flags);
902		1011
903	if (ev_method (EV_A))	1012	if (ev_backend (EV_A))
904	{	1013	{
905	siginit (EV_A);	1014	siginit (EV_A);
906		1015
907	#ifndef WIN32	1016	#ifndef _WIN32
908	ev_signal_init (&childev, childcb, SIGCHLD);	1017	ev_signal_init (&childev, childcb, SIGCHLD);
909	ev_set_priority (&childev, EV_MAXPRI);	1018	ev_set_priority (&childev, EV_MAXPRI);
910	ev_signal_start (EV_A_ &childev);	1019	ev_signal_start (EV_A_ &childev);
911	ev_unref (EV_A); /* child watcher should not keep loop alive */	1020	ev_unref (EV_A); /* child watcher should not keep loop alive */
912	#endif	1021	#endif
913	}	1022	}
914	else	1023	else
915	default_loop = 0;	1024	ev_default_loop_ptr = 0;
916	}	1025	}
917		1026
918	return default_loop;	1027	return ev_default_loop_ptr;
919	}	1028	}
920		1029
921	void	1030	void
922	ev_default_destroy (void)	1031	ev_default_destroy (void)
923	{	1032	{
924	#if EV_MULTIPLICITY	1033	#if EV_MULTIPLICITY
925	struct ev_loop *loop = default_loop;	1034	struct ev_loop *loop = ev_default_loop_ptr;
926	#endif	1035	#endif
927		1036
928	#ifndef WIN32	1037	#ifndef _WIN32
929	ev_ref (EV_A); /* child watcher */	1038	ev_ref (EV_A); /* child watcher */
930	ev_signal_stop (EV_A_ &childev);	1039	ev_signal_stop (EV_A_ &childev);
931	#endif	1040	#endif
932		1041
933	ev_ref (EV_A); /* signal watcher */	1042	ev_ref (EV_A); /* signal watcher */
…		…
941		1050
942	void	1051	void
943	ev_default_fork (void)	1052	ev_default_fork (void)
944	{	1053	{
945	#if EV_MULTIPLICITY	1054	#if EV_MULTIPLICITY
946	struct ev_loop *loop = default_loop;	1055	struct ev_loop *loop = ev_default_loop_ptr;
947	#endif	1056	#endif
948		1057
949	if (method)	1058	if (backend)
950	postfork = 1;	1059	postfork = 1;
951	}	1060	}
952		1061
953	/*****************************************************************************/	1062	/*****************************************************************************/
954		1063
955	static int	1064	int inline_size
956	any_pending (EV_P)	1065	any_pending (EV_P)
957	{	1066	{
958	int pri;	1067	int pri;
959		1068
960	for (pri = NUMPRI; pri--; )	1069	for (pri = NUMPRI; pri--; )
…		…
962	return 1;	1071	return 1;
963		1072
964	return 0;	1073	return 0;
965	}	1074	}
966		1075
967	static void	1076	void inline_speed
968	call_pending (EV_P)	1077	call_pending (EV_P)
969	{	1078	{
970	int pri;	1079	int pri;
971		1080
972	for (pri = NUMPRI; pri--; )	1081	for (pri = NUMPRI; pri--; )
973	while (pendingcnt [pri])	1082	while (pendingcnt [pri])
974	{	1083	{
975	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1084	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
976		1085
977	if (p->w)	1086	if (expect_true (p->w))
978	{	1087	{
		1088	assert (("non-pending watcher on pending list", p->w->pending));
		1089
979	p->w->pending = 0;	1090	p->w->pending = 0;
980	EV_CB_INVOKE (p->w, p->events);	1091	EV_CB_INVOKE (p->w, p->events);
981	}	1092	}
982	}	1093	}
983	}	1094	}
984		1095
985	static void	1096	void inline_size
986	timers_reify (EV_P)	1097	timers_reify (EV_P)
987	{	1098	{
988	while (timercnt && ((WT)timers [0])->at <= mn_now)	1099	while (timercnt && ((WT)timers [0])->at <= mn_now)
989	{	1100	{
990	struct ev_timer *w = timers [0];	1101	ev_timer *w = timers [0];
991		1102
992	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1103	assert (("inactive timer on timer heap detected", ev_is_active (w)));
993		1104
994	/* first reschedule or stop timer */	1105	/* first reschedule or stop timer */
995	if (w->repeat)	1106	if (w->repeat)
…		…
1007		1118
1008	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1119	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1009	}	1120	}
1010	}	1121	}
1011		1122
1012	#if EV_PERIODICS	1123	#if EV_PERIODIC_ENABLE
1013	static void	1124	void inline_size
1014	periodics_reify (EV_P)	1125	periodics_reify (EV_P)
1015	{	1126	{
1016	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1127	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1017	{	1128	{
1018	struct ev_periodic *w = periodics [0];	1129	ev_periodic *w = periodics [0];
1019		1130
1020	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1131	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1021		1132
1022	/* first reschedule or stop timer */	1133	/* first reschedule or stop timer */
1023	if (w->reschedule_cb)	1134	if (w->reschedule_cb)
1024	{	1135	{
1025	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);
1026
1027	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));
1028	downheap ((WT *)periodics, periodiccnt, 0);	1138	downheap ((WT *)periodics, periodiccnt, 0);
1029	}	1139	}
1030	else if (w->interval)	1140	else if (w->interval)
1031	{	1141	{
…		…
1038		1148
1039	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1149	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1040	}	1150	}
1041	}	1151	}
1042		1152
1043	static void	1153	static void noinline
1044	periodics_reschedule (EV_P)	1154	periodics_reschedule (EV_P)
1045	{	1155	{
1046	int i;	1156	int i;
1047		1157
1048	/* adjust periodics after time jump */	1158	/* adjust periodics after time jump */
1049	for (i = 0; i < periodiccnt; ++i)	1159	for (i = 0; i < periodiccnt; ++i)
1050	{	1160	{
1051	struct ev_periodic *w = periodics [i];	1161	ev_periodic *w = periodics [i];
1052		1162
1053	if (w->reschedule_cb)	1163	if (w->reschedule_cb)
1054	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1164	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1055	else if (w->interval)	1165	else if (w->interval)
1056	((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;
…		…
1060	for (i = periodiccnt >> 1; i--; )	1170	for (i = periodiccnt >> 1; i--; )
1061	downheap ((WT *)periodics, periodiccnt, i);	1171	downheap ((WT *)periodics, periodiccnt, i);
1062	}	1172	}
1063	#endif	1173	#endif
1064		1174
1065	inline int	1175	int inline_size
1066	time_update_monotonic (EV_P)	1176	time_update_monotonic (EV_P)
1067	{	1177	{
1068	mn_now = get_clock ();	1178	mn_now = get_clock ();
1069		1179
1070	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1180	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
…		…
1078	ev_rt_now = ev_time ();	1188	ev_rt_now = ev_time ();
1079	return 1;	1189	return 1;
1080	}	1190	}
1081	}	1191	}
1082		1192
1083	static void	1193	void inline_size
1084	time_update (EV_P)	1194	time_update (EV_P)
1085	{	1195	{
1086	int i;	1196	int i;
1087		1197
1088	#if EV_USE_MONOTONIC	1198	#if EV_USE_MONOTONIC
…		…
1090	{	1200	{
1091	if (time_update_monotonic (EV_A))	1201	if (time_update_monotonic (EV_A))
1092	{	1202	{
1093	ev_tstamp odiff = rtmn_diff;	1203	ev_tstamp odiff = rtmn_diff;
1094		1204
1095	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; )
1096	{	1214	{
1097	rtmn_diff = ev_rt_now - mn_now;	1215	rtmn_diff = ev_rt_now - mn_now;
1098		1216
1099	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1217	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1100	return; /* all is well */	1218	return; /* all is well */
…		…
1102	ev_rt_now = ev_time ();	1220	ev_rt_now = ev_time ();
1103	mn_now = get_clock ();	1221	mn_now = get_clock ();
1104	now_floor = mn_now;	1222	now_floor = mn_now;
1105	}	1223	}
1106		1224
1107	# if EV_PERIODICS	1225	# if EV_PERIODIC_ENABLE
1108	periodics_reschedule (EV_A);	1226	periodics_reschedule (EV_A);
1109	# endif	1227	# endif
1110	/* no timer adjustment, as the monotonic clock doesn't jump */	1228	/* no timer adjustment, as the monotonic clock doesn't jump */
1111	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1229	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1112	}	1230	}
…		…
1116	{	1234	{
1117	ev_rt_now = ev_time ();	1235	ev_rt_now = ev_time ();
1118		1236
1119	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))
1120	{	1238	{
1121	#if EV_PERIODICS	1239	#if EV_PERIODIC_ENABLE
1122	periodics_reschedule (EV_A);	1240	periodics_reschedule (EV_A);
1123	#endif	1241	#endif
1124		1242
1125	/* 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 */
1126	for (i = 0; i < timercnt; ++i)	1244	for (i = 0; i < timercnt; ++i)
…		…
1146	static int loop_done;	1264	static int loop_done;
1147		1265
1148	void	1266	void
1149	ev_loop (EV_P_ int flags)	1267	ev_loop (EV_P_ int flags)
1150	{	1268	{
1151	double block;
1152	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1269	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1270	? EVUNLOOP_ONE
		1271	: EVUNLOOP_CANCEL;
1153		1272
1154	do	1273	while (activecnt)
1155	{	1274	{
1156	/* queue check watchers (and execute them) */	1275	/* queue check watchers (and execute them) */
1157	if (expect_false (preparecnt))	1276	if (expect_false (preparecnt))
1158	{	1277	{
1159	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1278	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1166		1285
1167	/* update fd-related kernel structures */	1286	/* update fd-related kernel structures */
1168	fd_reify (EV_A);	1287	fd_reify (EV_A);
1169		1288
1170	/* calculate blocking time */	1289	/* calculate blocking time */
		1290	{
		1291	double block;
1171		1292
1172	/* we only need this for !monotonic clock or timers, but as we basically	1293	if (flags & EVLOOP_NONBLOCK || idlecnt)
1173	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 */
1174	#if EV_USE_MONOTONIC	1298	#if EV_USE_MONOTONIC
1175	if (expect_true (have_monotonic))	1299	if (expect_true (have_monotonic))
1176	time_update_monotonic (EV_A);	1300	time_update_monotonic (EV_A);
1177	else	1301	else
1178	#endif	1302	#endif
1179	{	1303	{
1180	ev_rt_now = ev_time ();	1304	ev_rt_now = ev_time ();
1181	mn_now = ev_rt_now;	1305	mn_now = ev_rt_now;
1182	}	1306	}
1183		1307
1184	if (flags & EVLOOP_NONBLOCK || idlecnt)
1185	block = 0.;
1186	else
1187	{
1188	block = MAX_BLOCKTIME;	1308	block = MAX_BLOCKTIME;
1189		1309
1190	if (timercnt)	1310	if (timercnt)
1191	{	1311	{
1192	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1312	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1193	if (block > to) block = to;	1313	if (block > to) block = to;
1194	}	1314	}
1195		1315
1196	#if EV_PERIODICS	1316	#if EV_PERIODIC_ENABLE
1197	if (periodiccnt)	1317	if (periodiccnt)
1198	{	1318	{
1199	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;
1200	if (block > to) block = to;	1320	if (block > to) block = to;
1201	}	1321	}
1202	#endif	1322	#endif
1203		1323
1204	if (block < 0.) block = 0.;	1324	if (expect_false (block < 0.)) block = 0.;
1205	}	1325	}
1206		1326
1207	method_poll (EV_A_ block);	1327	backend_poll (EV_A_ block);
		1328	}
1208		1329
1209	/* update ev_rt_now, do magic */	1330	/* update ev_rt_now, do magic */
1210	time_update (EV_A);	1331	time_update (EV_A);
1211		1332
1212	/* queue pending timers and reschedule them */	1333	/* queue pending timers and reschedule them */
1213	timers_reify (EV_A); /* relative timers called last */	1334	timers_reify (EV_A); /* relative timers called last */
1214	#if EV_PERIODICS	1335	#if EV_PERIODIC_ENABLE
1215	periodics_reify (EV_A); /* absolute timers called first */	1336	periodics_reify (EV_A); /* absolute timers called first */
1216	#endif	1337	#endif
1217		1338
1218	/* queue idle watchers unless io or timers are pending */	1339	/* queue idle watchers unless other events are pending */
1219	if (idlecnt && !any_pending (EV_A))	1340	if (idlecnt && !any_pending (EV_A))
1220	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1341	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1221		1342
1222	/* queue check watchers, to be executed first */	1343	/* queue check watchers, to be executed first */
1223	if (checkcnt)	1344	if (expect_false (checkcnt))
1224	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1345	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1225		1346
1226	call_pending (EV_A);	1347	call_pending (EV_A);
1227	}
1228	while (activecnt && !loop_done);
1229		1348
1230	if (loop_done != 2)	1349	if (expect_false (loop_done))
1231	loop_done = 0;	1350	break;
		1351	}
		1352
		1353	if (loop_done == EVUNLOOP_ONE)
		1354	loop_done = EVUNLOOP_CANCEL;
1232	}	1355	}
1233		1356
1234	void	1357	void
1235	ev_unloop (EV_P_ int how)	1358	ev_unloop (EV_P_ int how)
1236	{	1359	{
1237	loop_done = how;	1360	loop_done = how;
1238	}	1361	}
1239		1362
1240	/*****************************************************************************/	1363	/*****************************************************************************/
1241		1364
1242	inline void	1365	void inline_size
1243	wlist_add (WL *head, WL elem)	1366	wlist_add (WL *head, WL elem)
1244	{	1367	{
1245	elem->next = *head;	1368	elem->next = *head;
1246	*head = elem;	1369	*head = elem;
1247	}	1370	}
1248		1371
1249	inline void	1372	void inline_size
1250	wlist_del (WL *head, WL elem)	1373	wlist_del (WL *head, WL elem)
1251	{	1374	{
1252	while (*head)	1375	while (*head)
1253	{	1376	{
1254	if (*head == elem)	1377	if (*head == elem)
…		…
1259		1382
1260	head = &(*head)->next;	1383	head = &(*head)->next;
1261	}	1384	}
1262	}	1385	}
1263		1386
1264	inline void	1387	void inline_speed
1265	ev_clear_pending (EV_P_ W w)	1388	ev_clear_pending (EV_P_ W w)
1266	{	1389	{
1267	if (w->pending)	1390	if (w->pending)
1268	{	1391	{
1269	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1392	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1270	w->pending = 0;	1393	w->pending = 0;
1271	}	1394	}
1272	}	1395	}
1273		1396
1274	inline void	1397	void inline_speed
1275	ev_start (EV_P_ W w, int active)	1398	ev_start (EV_P_ W w, int active)
1276	{	1399	{
1277	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1400	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1278	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1401	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1279		1402
1280	w->active = active;	1403	w->active = active;
1281	ev_ref (EV_A);	1404	ev_ref (EV_A);
1282	}	1405	}
1283		1406
1284	inline void	1407	void inline_size
1285	ev_stop (EV_P_ W w)	1408	ev_stop (EV_P_ W w)
1286	{	1409	{
1287	ev_unref (EV_A);	1410	ev_unref (EV_A);
1288	w->active = 0;	1411	w->active = 0;
1289	}	1412	}
1290		1413
1291	/*****************************************************************************/	1414	/*****************************************************************************/
1292		1415
1293	void	1416	void
1294	ev_io_start (EV_P_ struct ev_io *w)	1417	ev_io_start (EV_P_ ev_io *w)
1295	{	1418	{
1296	int fd = w->fd;	1419	int fd = w->fd;
1297		1420
1298	if (ev_is_active (w))	1421	if (expect_false (ev_is_active (w)))
1299	return;	1422	return;
1300		1423
1301	assert (("ev_io_start called with negative fd", fd >= 0));	1424	assert (("ev_io_start called with negative fd", fd >= 0));
1302		1425
1303	ev_start (EV_A_ (W)w, 1);	1426	ev_start (EV_A_ (W)w, 1);
…		…
1306		1429
1307	fd_change (EV_A_ fd);	1430	fd_change (EV_A_ fd);
1308	}	1431	}
1309		1432
1310	void	1433	void
1311	ev_io_stop (EV_P_ struct ev_io *w)	1434	ev_io_stop (EV_P_ ev_io *w)
1312	{	1435	{
1313	ev_clear_pending (EV_A_ (W)w);	1436	ev_clear_pending (EV_A_ (W)w);
1314	if (!ev_is_active (w))	1437	if (expect_false (!ev_is_active (w)))
1315	return;	1438	return;
1316		1439
1317	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));
1318		1441
1319	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1442	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
…		…
1321		1444
1322	fd_change (EV_A_ w->fd);	1445	fd_change (EV_A_ w->fd);
1323	}	1446	}
1324		1447
1325	void	1448	void
1326	ev_timer_start (EV_P_ struct ev_timer *w)	1449	ev_timer_start (EV_P_ ev_timer *w)
1327	{	1450	{
1328	if (ev_is_active (w))	1451	if (expect_false (ev_is_active (w)))
1329	return;	1452	return;
1330		1453
1331	((WT)w)->at += mn_now;	1454	((WT)w)->at += mn_now;
1332		1455
1333	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.));
1334		1457
1335	ev_start (EV_A_ (W)w, ++timercnt);	1458	ev_start (EV_A_ (W)w, ++timercnt);
1336	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1459	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1337	timers [timercnt - 1] = w;	1460	timers [timercnt - 1] = w;
1338	upheap ((WT *)timers, timercnt - 1);	1461	upheap ((WT *)timers, timercnt - 1);
1339		1462
1340	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1463	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1341	}	1464	}
1342		1465
1343	void	1466	void
1344	ev_timer_stop (EV_P_ struct ev_timer *w)	1467	ev_timer_stop (EV_P_ ev_timer *w)
1345	{	1468	{
1346	ev_clear_pending (EV_A_ (W)w);	1469	ev_clear_pending (EV_A_ (W)w);
1347	if (!ev_is_active (w))	1470	if (expect_false (!ev_is_active (w)))
1348	return;	1471	return;
1349		1472
1350	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1473	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1351		1474
1352	if (((W)w)->active < timercnt--)	1475	if (expect_true (((W)w)->active < timercnt--))
1353	{	1476	{
1354	timers [((W)w)->active - 1] = timers [timercnt];	1477	timers [((W)w)->active - 1] = timers [timercnt];
1355	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1478	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1356	}	1479	}
1357		1480
1358	((WT)w)->at -= mn_now;	1481	((WT)w)->at -= mn_now;
1359		1482
1360	ev_stop (EV_A_ (W)w);	1483	ev_stop (EV_A_ (W)w);
1361	}	1484	}
1362		1485
1363	void	1486	void
1364	ev_timer_again (EV_P_ struct ev_timer *w)	1487	ev_timer_again (EV_P_ ev_timer *w)
1365	{	1488	{
1366	if (ev_is_active (w))	1489	if (ev_is_active (w))
1367	{	1490	{
1368	if (w->repeat)	1491	if (w->repeat)
		1492	{
		1493	((WT)w)->at = mn_now + w->repeat;
1369	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1494	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
		1495	}
1370	else	1496	else
1371	ev_timer_stop (EV_A_ w);	1497	ev_timer_stop (EV_A_ w);
1372	}	1498	}
1373	else if (w->repeat)	1499	else if (w->repeat)
		1500	{
		1501	w->at = w->repeat;
1374	ev_timer_start (EV_A_ w);	1502	ev_timer_start (EV_A_ w);
		1503	}
1375	}	1504	}
1376		1505
1377	#if EV_PERIODICS	1506	#if EV_PERIODIC_ENABLE
1378	void	1507	void
1379	ev_periodic_start (EV_P_ struct ev_periodic *w)	1508	ev_periodic_start (EV_P_ ev_periodic *w)
1380	{	1509	{
1381	if (ev_is_active (w))	1510	if (expect_false (ev_is_active (w)))
1382	return;	1511	return;
1383		1512
1384	if (w->reschedule_cb)	1513	if (w->reschedule_cb)
1385	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1514	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1386	else if (w->interval)	1515	else if (w->interval)
…		…
1389	/* 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 */
1390	((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;
1391	}	1520	}
1392		1521
1393	ev_start (EV_A_ (W)w, ++periodiccnt);	1522	ev_start (EV_A_ (W)w, ++periodiccnt);
1394	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1523	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1395	periodics [periodiccnt - 1] = w;	1524	periodics [periodiccnt - 1] = w;
1396	upheap ((WT *)periodics, periodiccnt - 1);	1525	upheap ((WT *)periodics, periodiccnt - 1);
1397		1526
1398	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1527	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1399	}	1528	}
1400		1529
1401	void	1530	void
1402	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1531	ev_periodic_stop (EV_P_ ev_periodic *w)
1403	{	1532	{
1404	ev_clear_pending (EV_A_ (W)w);	1533	ev_clear_pending (EV_A_ (W)w);
1405	if (!ev_is_active (w))	1534	if (expect_false (!ev_is_active (w)))
1406	return;	1535	return;
1407		1536
1408	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1537	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1409		1538
1410	if (((W)w)->active < periodiccnt--)	1539	if (expect_true (((W)w)->active < periodiccnt--))
1411	{	1540	{
1412	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1541	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1413	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1542	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1414	}	1543	}
1415		1544
1416	ev_stop (EV_A_ (W)w);	1545	ev_stop (EV_A_ (W)w);
1417	}	1546	}
1418		1547
1419	void	1548	void
1420	ev_periodic_again (EV_P_ struct ev_periodic *w)	1549	ev_periodic_again (EV_P_ ev_periodic *w)
1421	{	1550	{
1422	/* TODO: use adjustheap and recalculation */	1551	/* TODO: use adjustheap and recalculation */
1423	ev_periodic_stop (EV_A_ w);	1552	ev_periodic_stop (EV_A_ w);
1424	ev_periodic_start (EV_A_ w);	1553	ev_periodic_start (EV_A_ w);
1425	}	1554	}
1426	#endif	1555	#endif
1427		1556
1428	void	1557	void
1429	ev_idle_start (EV_P_ struct ev_idle *w)	1558	ev_idle_start (EV_P_ ev_idle *w)
1430	{	1559	{
1431	if (ev_is_active (w))	1560	if (expect_false (ev_is_active (w)))
1432	return;	1561	return;
1433		1562
1434	ev_start (EV_A_ (W)w, ++idlecnt);	1563	ev_start (EV_A_ (W)w, ++idlecnt);
1435	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));	1564	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1436	idles [idlecnt - 1] = w;	1565	idles [idlecnt - 1] = w;
1437	}	1566	}
1438		1567
1439	void	1568	void
1440	ev_idle_stop (EV_P_ struct ev_idle *w)	1569	ev_idle_stop (EV_P_ ev_idle *w)
1441	{	1570	{
1442	ev_clear_pending (EV_A_ (W)w);	1571	ev_clear_pending (EV_A_ (W)w);
1443	if (ev_is_active (w))	1572	if (expect_false (!ev_is_active (w)))
1444	return;	1573	return;
1445		1574
		1575	{
		1576	int active = ((W)w)->active;
1446	idles [((W)w)->active - 1] = idles [--idlecnt];	1577	idles [active - 1] = idles [--idlecnt];
		1578	((W)idles [active - 1])->active = active;
		1579	}
		1580
1447	ev_stop (EV_A_ (W)w);	1581	ev_stop (EV_A_ (W)w);
1448	}	1582	}
1449		1583
1450	void	1584	void
1451	ev_prepare_start (EV_P_ struct ev_prepare *w)	1585	ev_prepare_start (EV_P_ ev_prepare *w)
1452	{	1586	{
1453	if (ev_is_active (w))	1587	if (expect_false (ev_is_active (w)))
1454	return;	1588	return;
1455		1589
1456	ev_start (EV_A_ (W)w, ++preparecnt);	1590	ev_start (EV_A_ (W)w, ++preparecnt);
1457	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));	1591	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1458	prepares [preparecnt - 1] = w;	1592	prepares [preparecnt - 1] = w;
1459	}	1593	}
1460		1594
1461	void	1595	void
1462	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1596	ev_prepare_stop (EV_P_ ev_prepare *w)
1463	{	1597	{
1464	ev_clear_pending (EV_A_ (W)w);	1598	ev_clear_pending (EV_A_ (W)w);
1465	if (ev_is_active (w))	1599	if (expect_false (!ev_is_active (w)))
1466	return;	1600	return;
1467		1601
		1602	{
		1603	int active = ((W)w)->active;
1468	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1604	prepares [active - 1] = prepares [--preparecnt];
		1605	((W)prepares [active - 1])->active = active;
		1606	}
		1607
1469	ev_stop (EV_A_ (W)w);	1608	ev_stop (EV_A_ (W)w);
1470	}	1609	}
1471		1610
1472	void	1611	void
1473	ev_check_start (EV_P_ struct ev_check *w)	1612	ev_check_start (EV_P_ ev_check *w)
1474	{	1613	{
1475	if (ev_is_active (w))	1614	if (expect_false (ev_is_active (w)))
1476	return;	1615	return;
1477		1616
1478	ev_start (EV_A_ (W)w, ++checkcnt);	1617	ev_start (EV_A_ (W)w, ++checkcnt);
1479	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));	1618	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1480	checks [checkcnt - 1] = w;	1619	checks [checkcnt - 1] = w;
1481	}	1620	}
1482		1621
1483	void	1622	void
1484	ev_check_stop (EV_P_ struct ev_check *w)	1623	ev_check_stop (EV_P_ ev_check *w)
1485	{	1624	{
1486	ev_clear_pending (EV_A_ (W)w);	1625	ev_clear_pending (EV_A_ (W)w);
1487	if (!ev_is_active (w))	1626	if (expect_false (!ev_is_active (w)))
1488	return;	1627	return;
1489		1628
		1629	{
		1630	int active = ((W)w)->active;
1490	checks [((W)w)->active - 1] = checks [--checkcnt];	1631	checks [active - 1] = checks [--checkcnt];
		1632	((W)checks [active - 1])->active = active;
		1633	}
		1634
1491	ev_stop (EV_A_ (W)w);	1635	ev_stop (EV_A_ (W)w);
1492	}	1636	}
1493		1637
1494	#ifndef SA_RESTART	1638	#ifndef SA_RESTART
1495	# define SA_RESTART 0	1639	# define SA_RESTART 0
1496	#endif	1640	#endif
1497		1641
1498	void	1642	void
1499	ev_signal_start (EV_P_ struct ev_signal *w)	1643	ev_signal_start (EV_P_ ev_signal *w)
1500	{	1644	{
1501	#if EV_MULTIPLICITY	1645	#if EV_MULTIPLICITY
1502	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));
1503	#endif	1647	#endif
1504	if (ev_is_active (w))	1648	if (expect_false (ev_is_active (w)))
1505	return;	1649	return;
1506		1650
1507	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));
1508		1652
1509	ev_start (EV_A_ (W)w, 1);	1653	ev_start (EV_A_ (W)w, 1);
1510	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1654	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1511	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1655	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1512		1656
1513	if (!((WL)w)->next)	1657	if (!((WL)w)->next)
1514	{	1658	{
1515	#if WIN32	1659	#if _WIN32
1516	signal (w->signum, sighandler);	1660	signal (w->signum, sighandler);
1517	#else	1661	#else
1518	struct sigaction sa;	1662	struct sigaction sa;
1519	sa.sa_handler = sighandler;	1663	sa.sa_handler = sighandler;
1520	sigfillset (&sa.sa_mask);	1664	sigfillset (&sa.sa_mask);
…		…
1523	#endif	1667	#endif
1524	}	1668	}
1525	}	1669	}
1526		1670
1527	void	1671	void
1528	ev_signal_stop (EV_P_ struct ev_signal *w)	1672	ev_signal_stop (EV_P_ ev_signal *w)
1529	{	1673	{
1530	ev_clear_pending (EV_A_ (W)w);	1674	ev_clear_pending (EV_A_ (W)w);
1531	if (!ev_is_active (w))	1675	if (expect_false (!ev_is_active (w)))
1532	return;	1676	return;
1533		1677
1534	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1678	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1535	ev_stop (EV_A_ (W)w);	1679	ev_stop (EV_A_ (W)w);
1536		1680
1537	if (!signals [w->signum - 1].head)	1681	if (!signals [w->signum - 1].head)
1538	signal (w->signum, SIG_DFL);	1682	signal (w->signum, SIG_DFL);
1539	}	1683	}
1540		1684
1541	void	1685	void
1542	ev_child_start (EV_P_ struct ev_child *w)	1686	ev_child_start (EV_P_ ev_child *w)
1543	{	1687	{
1544	#if EV_MULTIPLICITY	1688	#if EV_MULTIPLICITY
1545	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));
1546	#endif	1690	#endif
1547	if (ev_is_active (w))	1691	if (expect_false (ev_is_active (w)))
1548	return;	1692	return;
1549		1693
1550	ev_start (EV_A_ (W)w, 1);	1694	ev_start (EV_A_ (W)w, 1);
1551	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1695	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1552	}	1696	}
1553		1697
1554	void	1698	void
1555	ev_child_stop (EV_P_ struct ev_child *w)	1699	ev_child_stop (EV_P_ ev_child *w)
1556	{	1700	{
1557	ev_clear_pending (EV_A_ (W)w);	1701	ev_clear_pending (EV_A_ (W)w);
1558	if (!ev_is_active (w))	1702	if (expect_false (!ev_is_active (w)))
1559	return;	1703	return;
1560		1704
1561	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1705	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1562	ev_stop (EV_A_ (W)w);	1706	ev_stop (EV_A_ (W)w);
1563	}	1707	}
1564		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
1565	/*****************************************************************************/	1819	/*****************************************************************************/
1566		1820
1567	struct ev_once	1821	struct ev_once
1568	{	1822	{
1569	struct ev_io io;	1823	ev_io io;
1570	struct ev_timer to;	1824	ev_timer to;
1571	void (*cb)(int revents, void *arg);	1825	void (*cb)(int revents, void *arg);
1572	void *arg;	1826	void *arg;
1573	};	1827	};
1574		1828
1575	static void	1829	static void
…		…
1584		1838
1585	cb (revents, arg);	1839	cb (revents, arg);
1586	}	1840	}
1587		1841
1588	static void	1842	static void
1589	once_cb_io (EV_P_ struct ev_io *w, int revents)	1843	once_cb_io (EV_P_ ev_io *w, int revents)
1590	{	1844	{
1591	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);
1592	}	1846	}
1593		1847
1594	static void	1848	static void
1595	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1849	once_cb_to (EV_P_ ev_timer *w, int revents)
1596	{	1850	{
1597	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);
1598	}	1852	}
1599		1853
1600	void	1854	void
1601	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)
1602	{	1856	{
1603	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));
1604		1858
1605	if (!once)	1859	if (expect_false (!once))
		1860	{
1606	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1861	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1607	else	1862	return;
1608	{	1863	}
		1864
1609	once->cb = cb;	1865	once->cb = cb;
1610	once->arg = arg;	1866	once->arg = arg;
1611		1867
1612	ev_init (&once->io, once_cb_io);	1868	ev_init (&once->io, once_cb_io);
1613	if (fd >= 0)	1869	if (fd >= 0)
1614	{	1870	{
1615	ev_io_set (&once->io, fd, events);	1871	ev_io_set (&once->io, fd, events);
1616	ev_io_start (EV_A_ &once->io);	1872	ev_io_start (EV_A_ &once->io);
1617	}	1873	}
1618		1874
1619	ev_init (&once->to, once_cb_to);	1875	ev_init (&once->to, once_cb_to);
1620	if (timeout >= 0.)	1876	if (timeout >= 0.)
1621	{	1877	{
1622	ev_timer_set (&once->to, timeout, 0.);	1878	ev_timer_set (&once->to, timeout, 0.);
1623	ev_timer_start (EV_A_ &once->to);	1879	ev_timer_start (EV_A_ &once->to);
1624	}
1625	}	1880	}
1626	}	1881	}
1627		1882
1628	#ifdef __cplusplus	1883	#ifdef __cplusplus
1629	}	1884	}

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines