[ViewVC] Diff of: 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 1.139 by root, Sun Nov 25 09:24:37 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>	116	# include <unistd.h>
82	# include <sys/time.h>	117	# include <sys/time.h>
83	# include <sys/wait.h>	118	# include <sys/wait.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))
148	# define inline inline	192	# define inline static inline
149	#else	193	#else
150	# define expect(expr,value) (expr)	194	# define expect(expr,value) (expr)
151	# define inline static	195	# define inline static
152	#endif	196	#endif
153		197
…		…
155	#define expect_true(expr) expect ((expr) != 0, 1)	199	#define expect_true(expr) expect ((expr) != 0, 1)
156		200
157	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	201	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
158	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	202	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
159		203
		204	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		205	#define EMPTY2(a,b) /* used to suppress some warnings */
		206
160	typedef struct ev_watcher *W;	207	typedef ev_watcher *W;
161	typedef struct ev_watcher_list *WL;	208	typedef ev_watcher_list *WL;
162	typedef struct ev_watcher_time *WT;	209	typedef ev_watcher_time *WT;
163		210
164	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	211	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
165		212
		213	#ifdef _WIN32
166	#include "ev_win32.c"	214	# include "ev_win32.c"
		215	#endif
167		216
168	/*****************************************************************************/	217	/*****************************************************************************/
169		218
170	static void (syserr_cb)(const char msg);	219	static void (syserr_cb)(const char msg);
171		220
…		…
218	typedef struct	267	typedef struct
219	{	268	{
220	WL head;	269	WL head;
221	unsigned char events;	270	unsigned char events;
222	unsigned char reify;	271	unsigned char reify;
		272	#if EV_SELECT_IS_WINSOCKET
		273	SOCKET handle;
		274	#endif
223	} ANFD;	275	} ANFD;
224		276
225	typedef struct	277	typedef struct
226	{	278	{
227	W w;	279	W w;
…		…
231	#if EV_MULTIPLICITY	283	#if EV_MULTIPLICITY
232		284
233	struct ev_loop	285	struct ev_loop
234	{	286	{
235	ev_tstamp ev_rt_now;	287	ev_tstamp ev_rt_now;
		288	#define ev_rt_now ((loop)->ev_rt_now)
236	#define VAR(name,decl) decl;	289	#define VAR(name,decl) decl;
237	#include "ev_vars.h"	290	#include "ev_vars.h"
238	#undef VAR	291	#undef VAR
239	};	292	};
240	#include "ev_wrap.h"	293	#include "ev_wrap.h"
241		294
242	struct ev_loop default_loop_struct;	295	static struct ev_loop default_loop_struct;
243	static struct ev_loop *default_loop;	296	struct ev_loop *ev_default_loop_ptr;
244		297
245	#else	298	#else
246		299
247	ev_tstamp ev_rt_now;	300	ev_tstamp ev_rt_now;
248	#define VAR(name,decl) static decl;	301	#define VAR(name,decl) static decl;
249	#include "ev_vars.h"	302	#include "ev_vars.h"
250	#undef VAR	303	#undef VAR
251		304
252	static int default_loop;	305	static int ev_default_loop_ptr;
253		306
254	#endif	307	#endif
255		308
256	/*****************************************************************************/	309	/*****************************************************************************/
257		310
…		…
290	{	343	{
291	return ev_rt_now;	344	return ev_rt_now;
292	}	345	}
293	#endif	346	#endif
294		347
295	#define array_roundsize(type,n) ((n) \| 4 & ~3)	348	#define array_roundsize(type,n) (((n) \| 4) & ~3)
296		349
297	#define array_needsize(type,base,cur,cnt,init) \	350	#define array_needsize(type,base,cur,cnt,init) \
298	if (expect_false ((cnt) > cur)) \	351	if (expect_false ((cnt) > cur)) \
299	{ \	352	{ \
300	int newcnt = cur; \	353	int newcnt = cur; \
…		…
315	stem ## max = array_roundsize (stem ## cnt >> 1); \	368	stem ## max = array_roundsize (stem ## cnt >> 1); \
316	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\	369	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
317	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	370	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
318	}	371	}
319		372
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) \	373	#define array_free(stem, idx) \
326	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	374	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
327		375
328	/*****************************************************************************/	376	/*****************************************************************************/
329		377
…		…
343	void	391	void
344	ev_feed_event (EV_P_ void *w, int revents)	392	ev_feed_event (EV_P_ void *w, int revents)
345	{	393	{
346	W w_ = (W)w;	394	W w_ = (W)w;
347		395
348	if (w_->pending)	396	if (expect_false (w_->pending))
349	{	397	{
350	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;	398	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
351	return;	399	return;
352	}	400	}
353		401
354	w_->pending = ++pendingcnt [ABSPRI (w_)];	402	w_->pending = ++pendingcnt [ABSPRI (w_)];
355	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));	403	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
356	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;	404	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
357	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;	405	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
358	}	406	}
359		407
360	static void	408	static void
…		…
368		416
369	inline void	417	inline void
370	fd_event (EV_P_ int fd, int revents)	418	fd_event (EV_P_ int fd, int revents)
371	{	419	{
372	ANFD *anfd = anfds + fd;	420	ANFD *anfd = anfds + fd;
373	struct ev_io *w;	421	ev_io *w;
374		422
375	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	423	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
376	{	424	{
377	int ev = w->events & revents;	425	int ev = w->events & revents;
378		426
379	if (ev)	427	if (ev)
380	ev_feed_event (EV_A_ (W)w, ev);	428	ev_feed_event (EV_A_ (W)w, ev);
…		…
387	fd_event (EV_A_ fd, revents);	435	fd_event (EV_A_ fd, revents);
388	}	436	}
389		437
390	/*****************************************************************************/	438	/*****************************************************************************/
391		439
392	static void	440	inline void
393	fd_reify (EV_P)	441	fd_reify (EV_P)
394	{	442	{
395	int i;	443	int i;
396		444
397	for (i = 0; i < fdchangecnt; ++i)	445	for (i = 0; i < fdchangecnt; ++i)
398	{	446	{
399	int fd = fdchanges [i];	447	int fd = fdchanges [i];
400	ANFD *anfd = anfds + fd;	448	ANFD *anfd = anfds + fd;
401	struct ev_io *w;	449	ev_io *w;
402		450
403	int events = 0;	451	int events = 0;
404		452
405	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	453	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
406	events \|= w->events;	454	events \|= w->events;
407		455
		456	#if EV_SELECT_IS_WINSOCKET
		457	if (events)
		458	{
		459	unsigned long argp;
		460	anfd->handle = _get_osfhandle (fd);
		461	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		462	}
		463	#endif
		464
408	anfd->reify = 0;	465	anfd->reify = 0;
409		466
410	method_modify (EV_A_ fd, anfd->events, events);	467	backend_modify (EV_A_ fd, anfd->events, events);
411	anfd->events = events;	468	anfd->events = events;
412	}	469	}
413		470
414	fdchangecnt = 0;	471	fdchangecnt = 0;
415	}	472	}
416		473
417	static void	474	static void
418	fd_change (EV_P_ int fd)	475	fd_change (EV_P_ int fd)
419	{	476	{
420	if (anfds [fd].reify)	477	if (expect_false (anfds [fd].reify))
421	return;	478	return;
422		479
423	anfds [fd].reify = 1;	480	anfds [fd].reify = 1;
424		481
425	++fdchangecnt;	482	++fdchangecnt;
426	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	483	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
427	fdchanges [fdchangecnt - 1] = fd;	484	fdchanges [fdchangecnt - 1] = fd;
428	}	485	}
429		486
430	static void	487	static void
431	fd_kill (EV_P_ int fd)	488	fd_kill (EV_P_ int fd)
432	{	489	{
433	struct ev_io *w;	490	ev_io *w;
434		491
435	while ((w = (struct ev_io *)anfds [fd].head))	492	while ((w = (ev_io *)anfds [fd].head))
436	{	493	{
437	ev_io_stop (EV_A_ w);	494	ev_io_stop (EV_A_ w);
438	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	495	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
439	}	496	}
440	}	497	}
441		498
442	static int	499	inline int
443	fd_valid (int fd)	500	fd_valid (int fd)
444	{	501	{
445	#ifdef WIN32	502	#ifdef _WIN32
446	return !!win32_get_osfhandle (fd);	503	return _get_osfhandle (fd) != -1;
447	#else	504	#else
448	return fcntl (fd, F_GETFD) != -1;	505	return fcntl (fd, F_GETFD) != -1;
449	#endif	506	#endif
450	}	507	}
451		508
…		…
473	fd_kill (EV_A_ fd);	530	fd_kill (EV_A_ fd);
474	return;	531	return;
475	}	532	}
476	}	533	}
477		534
478	/* usually called after fork if method needs to re-arm all fds from scratch */	535	/* usually called after fork if backend needs to re-arm all fds from scratch */
479	static void	536	static void
480	fd_rearm_all (EV_P)	537	fd_rearm_all (EV_P)
481	{	538	{
482	int fd;	539	int fd;
483		540
…		…
532	heap [k] = w;	589	heap [k] = w;
533	((W)heap [k])->active = k + 1;	590	((W)heap [k])->active = k + 1;
534	}	591	}
535		592
536	inline void	593	inline void
537	adjustheap (WT *heap, int N, int k, ev_tstamp at)	594	adjustheap (WT *heap, int N, int k)
538	{	595	{
539	ev_tstamp old_at = heap [k]->at;	596	upheap (heap, k);
540	heap [k]->at = at;
541
542	if (old_at < at)
543	downheap (heap, N, k);	597	downheap (heap, N, k);
544	else
545	upheap (heap, k);
546	}	598	}
547		599
548	/*****************************************************************************/	600	/*****************************************************************************/
549		601
550	typedef struct	602	typedef struct
…		…
556	static ANSIG *signals;	608	static ANSIG *signals;
557	static int signalmax;	609	static int signalmax;
558		610
559	static int sigpipe [2];	611	static int sigpipe [2];
560	static sig_atomic_t volatile gotsig;	612	static sig_atomic_t volatile gotsig;
561	static struct ev_io sigev;	613	static ev_io sigev;
562		614
563	static void	615	static void
564	signals_init (ANSIG *base, int count)	616	signals_init (ANSIG *base, int count)
565	{	617	{
566	while (count--)	618	while (count--)
…		…
573	}	625	}
574		626
575	static void	627	static void
576	sighandler (int signum)	628	sighandler (int signum)
577	{	629	{
578	#if WIN32	630	#if _WIN32
579	signal (signum, sighandler);	631	signal (signum, sighandler);
580	#endif	632	#endif
581		633
582	signals [signum - 1].gotsig = 1;	634	signals [signum - 1].gotsig = 1;
583		635
584	if (!gotsig)	636	if (!gotsig)
585	{	637	{
586	int old_errno = errno;	638	int old_errno = errno;
587	gotsig = 1;	639	gotsig = 1;
588	#ifdef WIN32
589	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
590	#else
591	write (sigpipe [1], &signum, 1);	640	write (sigpipe [1], &signum, 1);
592	#endif
593	errno = old_errno;	641	errno = old_errno;
594	}	642	}
595	}	643	}
596		644
597	void	645	void
598	ev_feed_signal_event (EV_P_ int signum)	646	ev_feed_signal_event (EV_P_ int signum)
599	{	647	{
600	WL w;	648	WL w;
601		649
602	#if EV_MULTIPLICITY	650	#if EV_MULTIPLICITY
603	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	651	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
604	#endif	652	#endif
605		653
606	--signum;	654	--signum;
607		655
608	if (signum < 0 \|\| signum >= signalmax)	656	if (signum < 0 \|\| signum >= signalmax)
…		…
613	for (w = signals [signum].head; w; w = w->next)	661	for (w = signals [signum].head; w; w = w->next)
614	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	662	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
615	}	663	}
616		664
617	static void	665	static void
618	sigcb (EV_P_ struct ev_io *iow, int revents)	666	sigcb (EV_P_ ev_io *iow, int revents)
619	{	667	{
620	int signum;	668	int signum;
621		669
622	#ifdef WIN32
623	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
624	#else
625	read (sigpipe [0], &revents, 1);	670	read (sigpipe [0], &revents, 1);
626	#endif
627	gotsig = 0;	671	gotsig = 0;
628		672
629	for (signum = signalmax; signum--; )	673	for (signum = signalmax; signum--; )
630	if (signals [signum].gotsig)	674	if (signals [signum].gotsig)
631	ev_feed_signal_event (EV_A_ signum + 1);	675	ev_feed_signal_event (EV_A_ signum + 1);
632	}	676	}
633		677
634	static void	678	static void
		679	fd_intern (int fd)
		680	{
		681	#ifdef _WIN32
		682	int arg = 1;
		683	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		684	#else
		685	fcntl (fd, F_SETFD, FD_CLOEXEC);
		686	fcntl (fd, F_SETFL, O_NONBLOCK);
		687	#endif
		688	}
		689
		690	static void
635	siginit (EV_P)	691	siginit (EV_P)
636	{	692	{
637	#ifndef WIN32	693	fd_intern (sigpipe [0]);
638	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	694	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		695
646	ev_io_set (&sigev, sigpipe [0], EV_READ);	696	ev_io_set (&sigev, sigpipe [0], EV_READ);
647	ev_io_start (EV_A_ &sigev);	697	ev_io_start (EV_A_ &sigev);
648	ev_unref (EV_A); /* child watcher should not keep loop alive */	698	ev_unref (EV_A); /* child watcher should not keep loop alive */
649	}	699	}
650		700
651	/*****************************************************************************/	701	/*****************************************************************************/
652		702
653	static struct ev_child *childs [PID_HASHSIZE];	703	static ev_child *childs [PID_HASHSIZE];
654		704
655	#ifndef WIN32	705	#ifndef _WIN32
656		706
657	static struct ev_signal childev;	707	static ev_signal childev;
658		708
659	#ifndef WCONTINUED	709	#ifndef WCONTINUED
660	# define WCONTINUED 0	710	# define WCONTINUED 0
661	#endif	711	#endif
662		712
663	static void	713	static void
664	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	714	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
665	{	715	{
666	struct ev_child *w;	716	ev_child *w;
667		717
668	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	718	for (w = (ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
669	if (w->pid == pid \|\| !w->pid)	719	if (w->pid == pid \|\| !w->pid)
670	{	720	{
671	ev_priority (w) = ev_priority (sw); /* need to do it now */	721	ev_priority (w) = ev_priority (sw); /* need to do it now */
672	w->rpid = pid;	722	w->rpid = pid;
673	w->rstatus = status;	723	w->rstatus = status;
674	ev_feed_event (EV_A_ (W)w, EV_CHILD);	724	ev_feed_event (EV_A_ (W)w, EV_CHILD);
675	}	725	}
676	}	726	}
677		727
678	static void	728	static void
679	childcb (EV_P_ struct ev_signal *sw, int revents)	729	childcb (EV_P_ ev_signal *sw, int revents)
680	{	730	{
681	int pid, status;	731	int pid, status;
682		732
683	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	733	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
684	{	734	{
685	/* make sure we are called again until all childs have been reaped */	735	/* make sure we are called again until all childs have been reaped */
		736	/* 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);	737	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
687		738
688	child_reap (EV_A_ sw, pid, pid, status);	739	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 */	740	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
690	}	741	}
691	}	742	}
692		743
693	#endif	744	#endif
694		745
695	/*****************************************************************************/	746	/*****************************************************************************/
696		747
		748	#if EV_USE_PORT
		749	# include "ev_port.c"
		750	#endif
697	#if EV_USE_KQUEUE	751	#if EV_USE_KQUEUE
698	# include "ev_kqueue.c"	752	# include "ev_kqueue.c"
699	#endif	753	#endif
700	#if EV_USE_EPOLL	754	#if EV_USE_EPOLL
701	# include "ev_epoll.c"	755	# include "ev_epoll.c"
…		…
721		775
722	/* return true if we are running with elevated privileges and should ignore env variables */	776	/* return true if we are running with elevated privileges and should ignore env variables */
723	static int	777	static int
724	enable_secure (void)	778	enable_secure (void)
725	{	779	{
726	#ifdef WIN32	780	#ifdef _WIN32
727	return 0;	781	return 0;
728	#else	782	#else
729	return getuid () != geteuid ()	783	return getuid () != geteuid ()
730	\|\| getgid () != getegid ();	784	\|\| getgid () != getegid ();
731	#endif	785	#endif
732	}	786	}
733		787
734	int	788	unsigned int
735	ev_method (EV_P)	789	ev_supported_backends (void)
736	{	790	{
737	return method;	791	unsigned int flags = 0;
738	}
739		792
740	static void	793	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
741	loop_init (EV_P_ int methods)	794	if (EV_USE_KQUEUE) flags \|= EVBACKEND_KQUEUE;
		795	if (EV_USE_EPOLL ) flags \|= EVBACKEND_EPOLL;
		796	if (EV_USE_POLL ) flags \|= EVBACKEND_POLL;
		797	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
		798
		799	return flags;
		800	}
		801
		802	unsigned int
		803	ev_recommended_backends (void)
742	{	804	{
743	if (!method)	805	unsigned int flags = ev_supported_backends ();
		806
		807	#ifndef __NetBSD__
		808	/* kqueue is borked on everything but netbsd apparently */
		809	/* it usually doesn't work correctly on anything but sockets and pipes */
		810	flags &= ~EVBACKEND_KQUEUE;
		811	#endif
		812	#ifdef __APPLE__
		813	// flags &= ~EVBACKEND_KQUEUE; for documentation
		814	flags &= ~EVBACKEND_POLL;
		815	#endif
		816
		817	return flags;
		818	}
		819
		820	unsigned int
		821	ev_embeddable_backends (void)
		822	{
		823	return EVBACKEND_EPOLL
		824	\| EVBACKEND_KQUEUE
		825	\| EVBACKEND_PORT;
		826	}
		827
		828	unsigned int
		829	ev_backend (EV_P)
		830	{
		831	return backend;
		832	}
		833
		834	static void
		835	loop_init (EV_P_ unsigned int flags)
		836	{
		837	if (!backend)
744	{	838	{
745	#if EV_USE_MONOTONIC	839	#if EV_USE_MONOTONIC
746	{	840	{
747	struct timespec ts;	841	struct timespec ts;
748	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	842	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
753	ev_rt_now = ev_time ();	847	ev_rt_now = ev_time ();
754	mn_now = get_clock ();	848	mn_now = get_clock ();
755	now_floor = mn_now;	849	now_floor = mn_now;
756	rtmn_diff = ev_rt_now - mn_now;	850	rtmn_diff = ev_rt_now - mn_now;
757		851
758	if (methods == EVMETHOD_AUTO)	852	if (!(flags & EVFLAG_NOENV)
759	if (!enable_secure () && getenv ("LIBEV_METHODS"))	853	&& !enable_secure ()
		854	&& getenv ("LIBEV_FLAGS"))
760	methods = atoi (getenv ("LIBEV_METHODS"));	855	flags = atoi (getenv ("LIBEV_FLAGS"));
761	else
762	methods = EVMETHOD_ANY;
763		856
764	method = 0;	857	if (!(flags & 0x0000ffffUL))
765	#if EV_USE_WIN32	858	flags \|= ev_recommended_backends ();
766	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	859
		860	backend = 0;
		861	#if EV_USE_PORT
		862	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
767	#endif	863	#endif
768	#if EV_USE_KQUEUE	864	#if EV_USE_KQUEUE
769	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	865	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
770	#endif	866	#endif
771	#if EV_USE_EPOLL	867	#if EV_USE_EPOLL
772	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	868	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
773	#endif	869	#endif
774	#if EV_USE_POLL	870	#if EV_USE_POLL
775	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	871	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
776	#endif	872	#endif
777	#if EV_USE_SELECT	873	#if EV_USE_SELECT
778	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	874	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
779	#endif	875	#endif
780		876
781	ev_init (&sigev, sigcb);	877	ev_init (&sigev, sigcb);
782	ev_set_priority (&sigev, EV_MAXPRI);	878	ev_set_priority (&sigev, EV_MAXPRI);
783	}	879	}
784	}	880	}
785		881
786	void	882	static void
787	loop_destroy (EV_P)	883	loop_destroy (EV_P)
788	{	884	{
789	int i;	885	int i;
790		886
791	#if EV_USE_WIN32	887	#if EV_USE_PORT
792	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	888	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
793	#endif	889	#endif
794	#if EV_USE_KQUEUE	890	#if EV_USE_KQUEUE
795	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	891	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
796	#endif	892	#endif
797	#if EV_USE_EPOLL	893	#if EV_USE_EPOLL
798	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	894	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
799	#endif	895	#endif
800	#if EV_USE_POLL	896	#if EV_USE_POLL
801	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	897	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
802	#endif	898	#endif
803	#if EV_USE_SELECT	899	#if EV_USE_SELECT
804	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	900	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
805	#endif	901	#endif
806		902
807	for (i = NUMPRI; i--; )	903	for (i = NUMPRI; i--; )
808	array_free (pending, [i]);	904	array_free (pending, [i]);
809		905
810	/* have to use the microsoft-never-gets-it-right macro */	906	/* have to use the microsoft-never-gets-it-right macro */
811	array_free_microshit (fdchange);	907	array_free (fdchange, EMPTY0);
812	array_free_microshit (timer);	908	array_free (timer, EMPTY0);
813	#if EV_PERIODICS	909	#if EV_PERIODICS
814	array_free_microshit (periodic);	910	array_free (periodic, EMPTY0);
815	#endif	911	#endif
816	array_free_microshit (idle);	912	array_free (idle, EMPTY0);
817	array_free_microshit (prepare);	913	array_free (prepare, EMPTY0);
818	array_free_microshit (check);	914	array_free (check, EMPTY0);
819		915
820	method = 0;	916	backend = 0;
821	}	917	}
822		918
823	static void	919	static void
824	loop_fork (EV_P)	920	loop_fork (EV_P)
825	{	921	{
		922	#if EV_USE_PORT
		923	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		924	#endif
		925	#if EV_USE_KQUEUE
		926	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		927	#endif
826	#if EV_USE_EPOLL	928	#if EV_USE_EPOLL
827	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	929	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	930	#endif
832		931
833	if (ev_is_active (&sigev))	932	if (ev_is_active (&sigev))
834	{	933	{
835	/* default loop */	934	/* default loop */
…		…
848	postfork = 0;	947	postfork = 0;
849	}	948	}
850		949
851	#if EV_MULTIPLICITY	950	#if EV_MULTIPLICITY
852	struct ev_loop *	951	struct ev_loop *
853	ev_loop_new (int methods)	952	ev_loop_new (unsigned int flags)
854	{	953	{
855	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	954	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
856		955
857	memset (loop, 0, sizeof (struct ev_loop));	956	memset (loop, 0, sizeof (struct ev_loop));
858		957
859	loop_init (EV_A_ methods);	958	loop_init (EV_A_ flags);
860		959
861	if (ev_method (EV_A))	960	if (ev_backend (EV_A))
862	return loop;	961	return loop;
863		962
864	return 0;	963	return 0;
865	}	964	}
866		965
…		…
879		978
880	#endif	979	#endif
881		980
882	#if EV_MULTIPLICITY	981	#if EV_MULTIPLICITY
883	struct ev_loop *	982	struct ev_loop *
		983	ev_default_loop_init (unsigned int flags)
884	#else	984	#else
885	int	985	int
		986	ev_default_loop (unsigned int flags)
886	#endif	987	#endif
887	ev_default_loop (int methods)
888	{	988	{
889	if (sigpipe [0] == sigpipe [1])	989	if (sigpipe [0] == sigpipe [1])
890	if (pipe (sigpipe))	990	if (pipe (sigpipe))
891	return 0;	991	return 0;
892		992
893	if (!default_loop)	993	if (!ev_default_loop_ptr)
894	{	994	{
895	#if EV_MULTIPLICITY	995	#if EV_MULTIPLICITY
896	struct ev_loop *loop = default_loop = &default_loop_struct;	996	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
897	#else	997	#else
898	default_loop = 1;	998	ev_default_loop_ptr = 1;
899	#endif	999	#endif
900		1000
901	loop_init (EV_A_ methods);	1001	loop_init (EV_A_ flags);
902		1002
903	if (ev_method (EV_A))	1003	if (ev_backend (EV_A))
904	{	1004	{
905	siginit (EV_A);	1005	siginit (EV_A);
906		1006
907	#ifndef WIN32	1007	#ifndef _WIN32
908	ev_signal_init (&childev, childcb, SIGCHLD);	1008	ev_signal_init (&childev, childcb, SIGCHLD);
909	ev_set_priority (&childev, EV_MAXPRI);	1009	ev_set_priority (&childev, EV_MAXPRI);
910	ev_signal_start (EV_A_ &childev);	1010	ev_signal_start (EV_A_ &childev);
911	ev_unref (EV_A); /* child watcher should not keep loop alive */	1011	ev_unref (EV_A); /* child watcher should not keep loop alive */
912	#endif	1012	#endif
913	}	1013	}
914	else	1014	else
915	default_loop = 0;	1015	ev_default_loop_ptr = 0;
916	}	1016	}
917		1017
918	return default_loop;	1018	return ev_default_loop_ptr;
919	}	1019	}
920		1020
921	void	1021	void
922	ev_default_destroy (void)	1022	ev_default_destroy (void)
923	{	1023	{
924	#if EV_MULTIPLICITY	1024	#if EV_MULTIPLICITY
925	struct ev_loop *loop = default_loop;	1025	struct ev_loop *loop = ev_default_loop_ptr;
926	#endif	1026	#endif
927		1027
928	#ifndef WIN32	1028	#ifndef _WIN32
929	ev_ref (EV_A); /* child watcher */	1029	ev_ref (EV_A); /* child watcher */
930	ev_signal_stop (EV_A_ &childev);	1030	ev_signal_stop (EV_A_ &childev);
931	#endif	1031	#endif
932		1032
933	ev_ref (EV_A); /* signal watcher */	1033	ev_ref (EV_A); /* signal watcher */
…		…
941		1041
942	void	1042	void
943	ev_default_fork (void)	1043	ev_default_fork (void)
944	{	1044	{
945	#if EV_MULTIPLICITY	1045	#if EV_MULTIPLICITY
946	struct ev_loop *loop = default_loop;	1046	struct ev_loop *loop = ev_default_loop_ptr;
947	#endif	1047	#endif
948		1048
949	if (method)	1049	if (backend)
950	postfork = 1;	1050	postfork = 1;
951	}	1051	}
952		1052
953	/*****************************************************************************/	1053	/*****************************************************************************/
954		1054
…		…
962	return 1;	1062	return 1;
963		1063
964	return 0;	1064	return 0;
965	}	1065	}
966		1066
967	static void	1067	inline void
968	call_pending (EV_P)	1068	call_pending (EV_P)
969	{	1069	{
970	int pri;	1070	int pri;
971		1071
972	for (pri = NUMPRI; pri--; )	1072	for (pri = NUMPRI; pri--; )
973	while (pendingcnt [pri])	1073	while (pendingcnt [pri])
974	{	1074	{
975	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1075	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
976		1076
977	if (p->w)	1077	if (expect_true (p->w))
978	{	1078	{
		1079	assert (("non-pending watcher on pending list", p->w->pending));
		1080
979	p->w->pending = 0;	1081	p->w->pending = 0;
980	EV_CB_INVOKE (p->w, p->events);	1082	EV_CB_INVOKE (p->w, p->events);
981	}	1083	}
982	}	1084	}
983	}	1085	}
984		1086
985	static void	1087	inline void
986	timers_reify (EV_P)	1088	timers_reify (EV_P)
987	{	1089	{
988	while (timercnt && ((WT)timers [0])->at <= mn_now)	1090	while (timercnt && ((WT)timers [0])->at <= mn_now)
989	{	1091	{
990	struct ev_timer *w = timers [0];	1092	ev_timer *w = timers [0];
991		1093
992	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1094	assert (("inactive timer on timer heap detected", ev_is_active (w)));
993		1095
994	/* first reschedule or stop timer */	1096	/* first reschedule or stop timer */
995	if (w->repeat)	1097	if (w->repeat)
…		…
1008	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1110	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1009	}	1111	}
1010	}	1112	}
1011		1113
1012	#if EV_PERIODICS	1114	#if EV_PERIODICS
1013	static void	1115	inline void
1014	periodics_reify (EV_P)	1116	periodics_reify (EV_P)
1015	{	1117	{
1016	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1118	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1017	{	1119	{
1018	struct ev_periodic *w = periodics [0];	1120	ev_periodic *w = periodics [0];
1019		1121
1020	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1122	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1021		1123
1022	/* first reschedule or stop timer */	1124	/* first reschedule or stop timer */
1023	if (w->reschedule_cb)	1125	if (w->reschedule_cb)
1024	{	1126	{
1025	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1127	((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));	1128	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1028	downheap ((WT *)periodics, periodiccnt, 0);	1129	downheap ((WT *)periodics, periodiccnt, 0);
1029	}	1130	}
1030	else if (w->interval)	1131	else if (w->interval)
1031	{	1132	{
…		…
1046	int i;	1147	int i;
1047		1148
1048	/* adjust periodics after time jump */	1149	/* adjust periodics after time jump */
1049	for (i = 0; i < periodiccnt; ++i)	1150	for (i = 0; i < periodiccnt; ++i)
1050	{	1151	{
1051	struct ev_periodic *w = periodics [i];	1152	ev_periodic *w = periodics [i];
1052		1153
1053	if (w->reschedule_cb)	1154	if (w->reschedule_cb)
1054	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1155	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1055	else if (w->interval)	1156	else if (w->interval)
1056	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1157	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
…		…
1078	ev_rt_now = ev_time ();	1179	ev_rt_now = ev_time ();
1079	return 1;	1180	return 1;
1080	}	1181	}
1081	}	1182	}
1082		1183
1083	static void	1184	inline void
1084	time_update (EV_P)	1185	time_update (EV_P)
1085	{	1186	{
1086	int i;	1187	int i;
1087		1188
1088	#if EV_USE_MONOTONIC	1189	#if EV_USE_MONOTONIC
…		…
1090	{	1191	{
1091	if (time_update_monotonic (EV_A))	1192	if (time_update_monotonic (EV_A))
1092	{	1193	{
1093	ev_tstamp odiff = rtmn_diff;	1194	ev_tstamp odiff = rtmn_diff;
1094		1195
1095	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1196	/* loop a few times, before making important decisions.
		1197	* on the choice of "4": one iteration isn't enough,
		1198	* in case we get preempted during the calls to
		1199	* ev_time and get_clock. a second call is almost guarenteed
		1200	* to succeed in that case, though. and looping a few more times
		1201	* doesn't hurt either as we only do this on time-jumps or
		1202	* in the unlikely event of getting preempted here.
		1203	*/
		1204	for (i = 4; --i; )
1096	{	1205	{
1097	rtmn_diff = ev_rt_now - mn_now;	1206	rtmn_diff = ev_rt_now - mn_now;
1098		1207
1099	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1208	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1100	return; /* all is well */	1209	return; /* all is well */
…		…
1146	static int loop_done;	1255	static int loop_done;
1147		1256
1148	void	1257	void
1149	ev_loop (EV_P_ int flags)	1258	ev_loop (EV_P_ int flags)
1150	{	1259	{
1151	double block;
1152	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1260	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1261	? EVUNLOOP_ONE
		1262	: EVUNLOOP_CANCEL;
1153		1263
1154	do	1264	while (activecnt)
1155	{	1265	{
1156	/* queue check watchers (and execute them) */	1266	/* queue check watchers (and execute them) */
1157	if (expect_false (preparecnt))	1267	if (expect_false (preparecnt))
1158	{	1268	{
1159	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1269	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1166		1276
1167	/* update fd-related kernel structures */	1277	/* update fd-related kernel structures */
1168	fd_reify (EV_A);	1278	fd_reify (EV_A);
1169		1279
1170	/* calculate blocking time */	1280	/* calculate blocking time */
		1281	{
		1282	double block;
1171		1283
1172	/* we only need this for !monotonic clock or timers, but as we basically	1284	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1173	always have timers, we just calculate it always */	1285	block = 0.; /* do not block at all */
		1286	else
		1287	{
		1288	/* update time to cancel out callback processing overhead */
1174	#if EV_USE_MONOTONIC	1289	#if EV_USE_MONOTONIC
1175	if (expect_true (have_monotonic))	1290	if (expect_true (have_monotonic))
1176	time_update_monotonic (EV_A);	1291	time_update_monotonic (EV_A);
1177	else	1292	else
1178	#endif	1293	#endif
1179	{	1294	{
1180	ev_rt_now = ev_time ();	1295	ev_rt_now = ev_time ();
1181	mn_now = ev_rt_now;	1296	mn_now = ev_rt_now;
1182	}	1297	}
1183		1298
1184	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1185	block = 0.;
1186	else
1187	{
1188	block = MAX_BLOCKTIME;	1299	block = MAX_BLOCKTIME;
1189		1300
1190	if (timercnt)	1301	if (timercnt)
1191	{	1302	{
1192	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1303	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1193	if (block > to) block = to;	1304	if (block > to) block = to;
1194	}	1305	}
1195		1306
1196	#if EV_PERIODICS	1307	#if EV_PERIODICS
1197	if (periodiccnt)	1308	if (periodiccnt)
1198	{	1309	{
1199	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1310	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1200	if (block > to) block = to;	1311	if (block > to) block = to;
1201	}	1312	}
1202	#endif	1313	#endif
1203		1314
1204	if (block < 0.) block = 0.;	1315	if (expect_false (block < 0.)) block = 0.;
1205	}	1316	}
1206		1317
1207	method_poll (EV_A_ block);	1318	backend_poll (EV_A_ block);
		1319	}
1208		1320
1209	/* update ev_rt_now, do magic */	1321	/* update ev_rt_now, do magic */
1210	time_update (EV_A);	1322	time_update (EV_A);
1211		1323
1212	/* queue pending timers and reschedule them */	1324	/* queue pending timers and reschedule them */
1213	timers_reify (EV_A); /* relative timers called last */	1325	timers_reify (EV_A); /* relative timers called last */
1214	#if EV_PERIODICS	1326	#if EV_PERIODICS
1215	periodics_reify (EV_A); /* absolute timers called first */	1327	periodics_reify (EV_A); /* absolute timers called first */
1216	#endif	1328	#endif
1217		1329
1218	/* queue idle watchers unless io or timers are pending */	1330	/* queue idle watchers unless other events are pending */
1219	if (idlecnt && !any_pending (EV_A))	1331	if (idlecnt && !any_pending (EV_A))
1220	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1332	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1221		1333
1222	/* queue check watchers, to be executed first */	1334	/* queue check watchers, to be executed first */
1223	if (checkcnt)	1335	if (expect_false (checkcnt))
1224	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1336	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1225		1337
1226	call_pending (EV_A);	1338	call_pending (EV_A);
1227	}
1228	while (activecnt && !loop_done);
1229		1339
1230	if (loop_done != 2)	1340	if (expect_false (loop_done))
1231	loop_done = 0;	1341	break;
		1342	}
		1343
		1344	if (loop_done == EVUNLOOP_ONE)
		1345	loop_done = EVUNLOOP_CANCEL;
1232	}	1346	}
1233		1347
1234	void	1348	void
1235	ev_unloop (EV_P_ int how)	1349	ev_unloop (EV_P_ int how)
1236	{	1350	{
…		…
1289	}	1403	}
1290		1404
1291	/*****************************************************************************/	1405	/*****************************************************************************/
1292		1406
1293	void	1407	void
1294	ev_io_start (EV_P_ struct ev_io *w)	1408	ev_io_start (EV_P_ ev_io *w)
1295	{	1409	{
1296	int fd = w->fd;	1410	int fd = w->fd;
1297		1411
1298	if (ev_is_active (w))	1412	if (expect_false (ev_is_active (w)))
1299	return;	1413	return;
1300		1414
1301	assert (("ev_io_start called with negative fd", fd >= 0));	1415	assert (("ev_io_start called with negative fd", fd >= 0));
1302		1416
1303	ev_start (EV_A_ (W)w, 1);	1417	ev_start (EV_A_ (W)w, 1);
…		…
1306		1420
1307	fd_change (EV_A_ fd);	1421	fd_change (EV_A_ fd);
1308	}	1422	}
1309		1423
1310	void	1424	void
1311	ev_io_stop (EV_P_ struct ev_io *w)	1425	ev_io_stop (EV_P_ ev_io *w)
1312	{	1426	{
1313	ev_clear_pending (EV_A_ (W)w);	1427	ev_clear_pending (EV_A_ (W)w);
1314	if (!ev_is_active (w))	1428	if (expect_false (!ev_is_active (w)))
1315	return;	1429	return;
1316		1430
1317	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1431	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1318		1432
1319	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1433	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
…		…
1321		1435
1322	fd_change (EV_A_ w->fd);	1436	fd_change (EV_A_ w->fd);
1323	}	1437	}
1324		1438
1325	void	1439	void
1326	ev_timer_start (EV_P_ struct ev_timer *w)	1440	ev_timer_start (EV_P_ ev_timer *w)
1327	{	1441	{
1328	if (ev_is_active (w))	1442	if (expect_false (ev_is_active (w)))
1329	return;	1443	return;
1330		1444
1331	((WT)w)->at += mn_now;	1445	((WT)w)->at += mn_now;
1332		1446
1333	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1447	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1334		1448
1335	ev_start (EV_A_ (W)w, ++timercnt);	1449	ev_start (EV_A_ (W)w, ++timercnt);
1336	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1450	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1337	timers [timercnt - 1] = w;	1451	timers [timercnt - 1] = w;
1338	upheap ((WT *)timers, timercnt - 1);	1452	upheap ((WT *)timers, timercnt - 1);
1339		1453
1340	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1454	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1341	}	1455	}
1342		1456
1343	void	1457	void
1344	ev_timer_stop (EV_P_ struct ev_timer *w)	1458	ev_timer_stop (EV_P_ ev_timer *w)
1345	{	1459	{
1346	ev_clear_pending (EV_A_ (W)w);	1460	ev_clear_pending (EV_A_ (W)w);
1347	if (!ev_is_active (w))	1461	if (expect_false (!ev_is_active (w)))
1348	return;	1462	return;
1349		1463
1350	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1464	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1351		1465
1352	if (((W)w)->active < timercnt--)	1466	if (expect_true (((W)w)->active < timercnt--))
1353	{	1467	{
1354	timers [((W)w)->active - 1] = timers [timercnt];	1468	timers [((W)w)->active - 1] = timers [timercnt];
1355	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1469	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1356	}	1470	}
1357		1471
1358	((WT)w)->at -= mn_now;	1472	((WT)w)->at -= mn_now;
1359		1473
1360	ev_stop (EV_A_ (W)w);	1474	ev_stop (EV_A_ (W)w);
1361	}	1475	}
1362		1476
1363	void	1477	void
1364	ev_timer_again (EV_P_ struct ev_timer *w)	1478	ev_timer_again (EV_P_ ev_timer *w)
1365	{	1479	{
1366	if (ev_is_active (w))	1480	if (ev_is_active (w))
1367	{	1481	{
1368	if (w->repeat)	1482	if (w->repeat)
		1483	{
		1484	((WT)w)->at = mn_now + w->repeat;
1369	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1485	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
		1486	}
1370	else	1487	else
1371	ev_timer_stop (EV_A_ w);	1488	ev_timer_stop (EV_A_ w);
1372	}	1489	}
1373	else if (w->repeat)	1490	else if (w->repeat)
		1491	{
		1492	w->at = w->repeat;
1374	ev_timer_start (EV_A_ w);	1493	ev_timer_start (EV_A_ w);
		1494	}
1375	}	1495	}
1376		1496
1377	#if EV_PERIODICS	1497	#if EV_PERIODICS
1378	void	1498	void
1379	ev_periodic_start (EV_P_ struct ev_periodic *w)	1499	ev_periodic_start (EV_P_ ev_periodic *w)
1380	{	1500	{
1381	if (ev_is_active (w))	1501	if (expect_false (ev_is_active (w)))
1382	return;	1502	return;
1383		1503
1384	if (w->reschedule_cb)	1504	if (w->reschedule_cb)
1385	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1505	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1386	else if (w->interval)	1506	else if (w->interval)
…		…
1389	/* this formula differs from the one in periodic_reify because we do not always round up */	1509	/* 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;	1510	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1391	}	1511	}
1392		1512
1393	ev_start (EV_A_ (W)w, ++periodiccnt);	1513	ev_start (EV_A_ (W)w, ++periodiccnt);
1394	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1514	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1395	periodics [periodiccnt - 1] = w;	1515	periodics [periodiccnt - 1] = w;
1396	upheap ((WT *)periodics, periodiccnt - 1);	1516	upheap ((WT *)periodics, periodiccnt - 1);
1397		1517
1398	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1518	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1399	}	1519	}
1400		1520
1401	void	1521	void
1402	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1522	ev_periodic_stop (EV_P_ ev_periodic *w)
1403	{	1523	{
1404	ev_clear_pending (EV_A_ (W)w);	1524	ev_clear_pending (EV_A_ (W)w);
1405	if (!ev_is_active (w))	1525	if (expect_false (!ev_is_active (w)))
1406	return;	1526	return;
1407		1527
1408	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1528	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1409		1529
1410	if (((W)w)->active < periodiccnt--)	1530	if (expect_true (((W)w)->active < periodiccnt--))
1411	{	1531	{
1412	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1532	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1413	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1533	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1414	}	1534	}
1415		1535
1416	ev_stop (EV_A_ (W)w);	1536	ev_stop (EV_A_ (W)w);
1417	}	1537	}
1418		1538
1419	void	1539	void
1420	ev_periodic_again (EV_P_ struct ev_periodic *w)	1540	ev_periodic_again (EV_P_ ev_periodic *w)
1421	{	1541	{
1422	/* TODO: use adjustheap and recalculation */	1542	/* TODO: use adjustheap and recalculation */
1423	ev_periodic_stop (EV_A_ w);	1543	ev_periodic_stop (EV_A_ w);
1424	ev_periodic_start (EV_A_ w);	1544	ev_periodic_start (EV_A_ w);
1425	}	1545	}
1426	#endif	1546	#endif
1427		1547
1428	void	1548	void
1429	ev_idle_start (EV_P_ struct ev_idle *w)	1549	ev_idle_start (EV_P_ ev_idle *w)
1430	{	1550	{
1431	if (ev_is_active (w))	1551	if (expect_false (ev_is_active (w)))
1432	return;	1552	return;
1433		1553
1434	ev_start (EV_A_ (W)w, ++idlecnt);	1554	ev_start (EV_A_ (W)w, ++idlecnt);
1435	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));	1555	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1436	idles [idlecnt - 1] = w;	1556	idles [idlecnt - 1] = w;
1437	}	1557	}
1438		1558
1439	void	1559	void
1440	ev_idle_stop (EV_P_ struct ev_idle *w)	1560	ev_idle_stop (EV_P_ ev_idle *w)
1441	{	1561	{
1442	ev_clear_pending (EV_A_ (W)w);	1562	ev_clear_pending (EV_A_ (W)w);
1443	if (ev_is_active (w))	1563	if (expect_false (!ev_is_active (w)))
1444	return;	1564	return;
1445		1565
		1566	{
		1567	int active = ((W)w)->active;
1446	idles [((W)w)->active - 1] = idles [--idlecnt];	1568	idles [active - 1] = idles [--idlecnt];
		1569	((W)idles [active - 1])->active = active;
		1570	}
		1571
1447	ev_stop (EV_A_ (W)w);	1572	ev_stop (EV_A_ (W)w);
1448	}	1573	}
1449		1574
1450	void	1575	void
1451	ev_prepare_start (EV_P_ struct ev_prepare *w)	1576	ev_prepare_start (EV_P_ ev_prepare *w)
1452	{	1577	{
1453	if (ev_is_active (w))	1578	if (expect_false (ev_is_active (w)))
1454	return;	1579	return;
1455		1580
1456	ev_start (EV_A_ (W)w, ++preparecnt);	1581	ev_start (EV_A_ (W)w, ++preparecnt);
1457	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));	1582	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1458	prepares [preparecnt - 1] = w;	1583	prepares [preparecnt - 1] = w;
1459	}	1584	}
1460		1585
1461	void	1586	void
1462	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1587	ev_prepare_stop (EV_P_ ev_prepare *w)
1463	{	1588	{
1464	ev_clear_pending (EV_A_ (W)w);	1589	ev_clear_pending (EV_A_ (W)w);
1465	if (ev_is_active (w))	1590	if (expect_false (!ev_is_active (w)))
1466	return;	1591	return;
1467		1592
		1593	{
		1594	int active = ((W)w)->active;
1468	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1595	prepares [active - 1] = prepares [--preparecnt];
		1596	((W)prepares [active - 1])->active = active;
		1597	}
		1598
1469	ev_stop (EV_A_ (W)w);	1599	ev_stop (EV_A_ (W)w);
1470	}	1600	}
1471		1601
1472	void	1602	void
1473	ev_check_start (EV_P_ struct ev_check *w)	1603	ev_check_start (EV_P_ ev_check *w)
1474	{	1604	{
1475	if (ev_is_active (w))	1605	if (expect_false (ev_is_active (w)))
1476	return;	1606	return;
1477		1607
1478	ev_start (EV_A_ (W)w, ++checkcnt);	1608	ev_start (EV_A_ (W)w, ++checkcnt);
1479	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));	1609	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1480	checks [checkcnt - 1] = w;	1610	checks [checkcnt - 1] = w;
1481	}	1611	}
1482		1612
1483	void	1613	void
1484	ev_check_stop (EV_P_ struct ev_check *w)	1614	ev_check_stop (EV_P_ ev_check *w)
1485	{	1615	{
1486	ev_clear_pending (EV_A_ (W)w);	1616	ev_clear_pending (EV_A_ (W)w);
1487	if (!ev_is_active (w))	1617	if (expect_false (!ev_is_active (w)))
1488	return;	1618	return;
1489		1619
		1620	{
		1621	int active = ((W)w)->active;
1490	checks [((W)w)->active - 1] = checks [--checkcnt];	1622	checks [active - 1] = checks [--checkcnt];
		1623	((W)checks [active - 1])->active = active;
		1624	}
		1625
1491	ev_stop (EV_A_ (W)w);	1626	ev_stop (EV_A_ (W)w);
1492	}	1627	}
1493		1628
1494	#ifndef SA_RESTART	1629	#ifndef SA_RESTART
1495	# define SA_RESTART 0	1630	# define SA_RESTART 0
1496	#endif	1631	#endif
1497		1632
1498	void	1633	void
1499	ev_signal_start (EV_P_ struct ev_signal *w)	1634	ev_signal_start (EV_P_ ev_signal *w)
1500	{	1635	{
1501	#if EV_MULTIPLICITY	1636	#if EV_MULTIPLICITY
1502	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1637	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1503	#endif	1638	#endif
1504	if (ev_is_active (w))	1639	if (expect_false (ev_is_active (w)))
1505	return;	1640	return;
1506		1641
1507	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1642	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1508		1643
1509	ev_start (EV_A_ (W)w, 1);	1644	ev_start (EV_A_ (W)w, 1);
1510	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1645	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1511	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1646	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1512		1647
1513	if (!((WL)w)->next)	1648	if (!((WL)w)->next)
1514	{	1649	{
1515	#if WIN32	1650	#if _WIN32
1516	signal (w->signum, sighandler);	1651	signal (w->signum, sighandler);
1517	#else	1652	#else
1518	struct sigaction sa;	1653	struct sigaction sa;
1519	sa.sa_handler = sighandler;	1654	sa.sa_handler = sighandler;
1520	sigfillset (&sa.sa_mask);	1655	sigfillset (&sa.sa_mask);
…		…
1523	#endif	1658	#endif
1524	}	1659	}
1525	}	1660	}
1526		1661
1527	void	1662	void
1528	ev_signal_stop (EV_P_ struct ev_signal *w)	1663	ev_signal_stop (EV_P_ ev_signal *w)
1529	{	1664	{
1530	ev_clear_pending (EV_A_ (W)w);	1665	ev_clear_pending (EV_A_ (W)w);
1531	if (!ev_is_active (w))	1666	if (expect_false (!ev_is_active (w)))
1532	return;	1667	return;
1533		1668
1534	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1669	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1535	ev_stop (EV_A_ (W)w);	1670	ev_stop (EV_A_ (W)w);
1536		1671
1537	if (!signals [w->signum - 1].head)	1672	if (!signals [w->signum - 1].head)
1538	signal (w->signum, SIG_DFL);	1673	signal (w->signum, SIG_DFL);
1539	}	1674	}
1540		1675
1541	void	1676	void
1542	ev_child_start (EV_P_ struct ev_child *w)	1677	ev_child_start (EV_P_ ev_child *w)
1543	{	1678	{
1544	#if EV_MULTIPLICITY	1679	#if EV_MULTIPLICITY
1545	assert (("child watchers are only supported in the default loop", loop == default_loop));	1680	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1546	#endif	1681	#endif
1547	if (ev_is_active (w))	1682	if (expect_false (ev_is_active (w)))
1548	return;	1683	return;
1549		1684
1550	ev_start (EV_A_ (W)w, 1);	1685	ev_start (EV_A_ (W)w, 1);
1551	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1686	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1552	}	1687	}
1553		1688
1554	void	1689	void
1555	ev_child_stop (EV_P_ struct ev_child *w)	1690	ev_child_stop (EV_P_ ev_child *w)
1556	{	1691	{
1557	ev_clear_pending (EV_A_ (W)w);	1692	ev_clear_pending (EV_A_ (W)w);
1558	if (!ev_is_active (w))	1693	if (expect_false (!ev_is_active (w)))
1559	return;	1694	return;
1560		1695
1561	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1696	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1562	ev_stop (EV_A_ (W)w);	1697	ev_stop (EV_A_ (W)w);
1563	}	1698	}
1564		1699
		1700	#if EV_MULTIPLICITY
		1701	void
		1702	ev_embed_sweep (EV_P_ ev_embed *w)
		1703	{
		1704	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1705	}
		1706
		1707	static void
		1708	embed_cb (EV_P_ ev_io *io, int revents)
		1709	{
		1710	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
		1711
		1712	if (ev_cb (w))
		1713	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1714	else
		1715	ev_embed_sweep (loop, w);
		1716	}
		1717
		1718	void
		1719	ev_embed_start (EV_P_ ev_embed *w)
		1720	{
		1721	if (expect_false (ev_is_active (w)))
		1722	return;
		1723
		1724	{
		1725	struct ev_loop *loop = w->loop;
		1726	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1727	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1728	}
		1729
		1730	ev_set_priority (&w->io, ev_priority (w));
		1731	ev_io_start (EV_A_ &w->io);
		1732	ev_start (EV_A_ (W)w, 1);
		1733	}
		1734
		1735	void
		1736	ev_embed_stop (EV_P_ ev_embed *w)
		1737	{
		1738	ev_clear_pending (EV_A_ (W)w);
		1739	if (expect_false (!ev_is_active (w)))
		1740	return;
		1741
		1742	ev_io_stop (EV_A_ &w->io);
		1743	ev_stop (EV_A_ (W)w);
		1744	}
		1745	#endif
		1746
1565	/*****************************************************************************/	1747	/*****************************************************************************/
1566		1748
1567	struct ev_once	1749	struct ev_once
1568	{	1750	{
1569	struct ev_io io;	1751	ev_io io;
1570	struct ev_timer to;	1752	ev_timer to;
1571	void (cb)(int revents, void arg);	1753	void (cb)(int revents, void arg);
1572	void *arg;	1754	void *arg;
1573	};	1755	};
1574		1756
1575	static void	1757	static void
…		…
1584		1766
1585	cb (revents, arg);	1767	cb (revents, arg);
1586	}	1768	}
1587		1769
1588	static void	1770	static void
1589	once_cb_io (EV_P_ struct ev_io *w, int revents)	1771	once_cb_io (EV_P_ ev_io *w, int revents)
1590	{	1772	{
1591	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1773	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1592	}	1774	}
1593		1775
1594	static void	1776	static void
1595	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1777	once_cb_to (EV_P_ ev_timer *w, int revents)
1596	{	1778	{
1597	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1779	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1598	}	1780	}
1599		1781
1600	void	1782	void
1601	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1783	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1602	{	1784	{
1603	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));	1785	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1604		1786
1605	if (!once)	1787	if (expect_false (!once))
		1788	{
1606	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1789	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1607	else	1790	return;
1608	{	1791	}
		1792
1609	once->cb = cb;	1793	once->cb = cb;
1610	once->arg = arg;	1794	once->arg = arg;
1611		1795
1612	ev_init (&once->io, once_cb_io);	1796	ev_init (&once->io, once_cb_io);
1613	if (fd >= 0)	1797	if (fd >= 0)
1614	{	1798	{
1615	ev_io_set (&once->io, fd, events);	1799	ev_io_set (&once->io, fd, events);
1616	ev_io_start (EV_A_ &once->io);	1800	ev_io_start (EV_A_ &once->io);
1617	}	1801	}
1618		1802
1619	ev_init (&once->to, once_cb_to);	1803	ev_init (&once->to, once_cb_to);
1620	if (timeout >= 0.)	1804	if (timeout >= 0.)
1621	{	1805	{
1622	ev_timer_set (&once->to, timeout, 0.);	1806	ev_timer_set (&once->to, timeout, 0.);
1623	ev_timer_start (EV_A_ &once->to);	1807	ev_timer_start (EV_A_ &once->to);
1624	}
1625	}	1808	}
1626	}	1809	}
1627		1810
1628	#ifdef __cplusplus	1811	#ifdef __cplusplus
1629	}	1812	}

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Comparing libev/ev.c (file contents): Revision 1.97 by root, Sun Nov 11 01:53:07 2007 UTC vs. Revision 1.139 by root, Sun Nov 25 09:24:37 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.97 by root, Sun Nov 11 01:53:07 2007 UTC vs.
Revision 1.139 by root, Sun Nov 25 09:24:37 2007 UTC