[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.87 by root, Sat Nov 10 03:36:15 2007 UTC vs.
Revision 1.134 by root, Fri Nov 23 19:13:33 2007 UTC

…		…
32	#ifdef __cplusplus	32	#ifdef __cplusplus
33	extern "C" {	33	extern "C" {
34	#endif	34	#endif
35		35
36	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
37	# include "config.h"	40	# include "config.h"
		41	# endif
38		42
39	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
40	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
41	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
42	# endif	57	# endif
43		58
		59	# ifndef EV_USE_SELECT
44	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
45	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
46	# endif	65	# endif
47		66
		67	# ifndef EV_USE_POLL
48	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
49	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
50	# endif	73	# endif
51		74
		75	# ifndef EV_USE_EPOLL
52	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
53	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
54	# endif	81	# endif
55		82
		83	# ifndef EV_USE_KQUEUE
56	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
57	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
58	# endif	97	# endif
59		98
60	#endif	99	#endif
61		100
62	#include <math.h>	101	#include <math.h>
…		…
71	#include <sys/types.h>	110	#include <sys/types.h>
72	#include <time.h>	111	#include <time.h>
73		112
74	#include <signal.h>	113	#include <signal.h>
75		114
76	#ifndef WIN32	115	#ifndef _WIN32
77	# include <unistd.h>	116	# include <unistd.h>
78	# include <sys/time.h>	117	# include <sys/time.h>
79	# 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
80	#endif	124	# endif
		125	#endif
		126
81	/**/	127	/**/
82		128
83	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
84	# define EV_USE_MONOTONIC 1	130	# define EV_USE_MONOTONIC 0
		131	#endif
		132
		133	#ifndef EV_USE_REALTIME
		134	# define EV_USE_REALTIME 0
85	#endif	135	#endif
86		136
87	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
88	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
89	#endif	139	#endif
90		140
91	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
92	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	142	# ifdef _WIN32
		143	# define EV_USE_POLL 0
		144	# else
		145	# define EV_USE_POLL 1
		146	# endif
93	#endif	147	#endif
94		148
95	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
96	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
97	#endif	151	#endif
98		152
99	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
100	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
101	#endif	155	#endif
102		156
103	#ifndef EV_USE_WIN32
104	# ifdef WIN32
105	# define EV_USE_WIN32 0 /* it does not exist, use select */
106	# undef EV_USE_SELECT
107	# define EV_USE_SELECT 1
108	# else
109	# define EV_USE_WIN32 0
110	# endif
111	#endif
112
113	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
114	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
115	#endif	159	#endif
116		160
117	/**/	161	/**/
118		162
119	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
124	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
125	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
126	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
127	#endif	171	#endif
128		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
129	/**/	177	/**/
130		178
131	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	179	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
132	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	180	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
133	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	181	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
134	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	182	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
135		183
136	#ifdef EV_H	184	#ifdef EV_H
137	# include EV_H	185	# include EV_H
138	#else	186	#else
139	# include "ev.h"	187	# include "ev.h"
140	#endif	188	#endif
141		189
142	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
143	# define expect(expr,value) __builtin_expect ((expr),(value))	191	# define expect(expr,value) __builtin_expect ((expr),(value))
144	# define inline inline	192	# define inline static inline
145	#else	193	#else
146	# define expect(expr,value) (expr)	194	# define expect(expr,value) (expr)
147	# define inline static	195	# define inline static
148	#endif	196	#endif
149		197
…		…
151	#define expect_true(expr) expect ((expr) != 0, 1)	199	#define expect_true(expr) expect ((expr) != 0, 1)
152		200
153	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	201	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
154	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	202	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
155		203
		204	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		205	#define EMPTY2(a,b) /* used to suppress some warnings */
		206
156	typedef struct ev_watcher *W;	207	typedef struct ev_watcher *W;
157	typedef struct ev_watcher_list *WL;	208	typedef struct ev_watcher_list *WL;
158	typedef struct ev_watcher_time *WT;	209	typedef struct ev_watcher_time *WT;
159		210
160	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	211	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
161		212
		213	#ifdef _WIN32
162	#include "ev_win32.c"	214	# include "ev_win32.c"
		215	#endif
163		216
164	/*****************************************************************************/	217	/*****************************************************************************/
165		218
166	static void (syserr_cb)(const char msg);	219	static void (syserr_cb)(const char msg);
167		220
…		…
214	typedef struct	267	typedef struct
215	{	268	{
216	WL head;	269	WL head;
217	unsigned char events;	270	unsigned char events;
218	unsigned char reify;	271	unsigned char reify;
		272	#if EV_SELECT_IS_WINSOCKET
		273	SOCKET handle;
		274	#endif
219	} ANFD;	275	} ANFD;
220		276
221	typedef struct	277	typedef struct
222	{	278	{
223	W w;	279	W w;
…		…
227	#if EV_MULTIPLICITY	283	#if EV_MULTIPLICITY
228		284
229	struct ev_loop	285	struct ev_loop
230	{	286	{
231	ev_tstamp ev_rt_now;	287	ev_tstamp ev_rt_now;
		288	#define ev_rt_now ((loop)->ev_rt_now)
232	#define VAR(name,decl) decl;	289	#define VAR(name,decl) decl;
233	#include "ev_vars.h"	290	#include "ev_vars.h"
234	#undef VAR	291	#undef VAR
235	};	292	};
236	#include "ev_wrap.h"	293	#include "ev_wrap.h"
237		294
238	struct ev_loop default_loop_struct;	295	static struct ev_loop default_loop_struct;
239	static struct ev_loop *default_loop;	296	struct ev_loop *ev_default_loop_ptr;
240		297
241	#else	298	#else
242		299
243	ev_tstamp ev_rt_now;	300	ev_tstamp ev_rt_now;
244	#define VAR(name,decl) static decl;	301	#define VAR(name,decl) static decl;
245	#include "ev_vars.h"	302	#include "ev_vars.h"
246	#undef VAR	303	#undef VAR
247		304
248	static int default_loop;	305	static int ev_default_loop_ptr;
249		306
250	#endif	307	#endif
251		308
252	/*****************************************************************************/	309	/*****************************************************************************/
253		310
254	inline ev_tstamp	311	ev_tstamp
255	ev_time (void)	312	ev_time (void)
256	{	313	{
257	#if EV_USE_REALTIME	314	#if EV_USE_REALTIME
258	struct timespec ts;	315	struct timespec ts;
259	clock_gettime (CLOCK_REALTIME, &ts);	316	clock_gettime (CLOCK_REALTIME, &ts);
…		…
286	{	343	{
287	return ev_rt_now;	344	return ev_rt_now;
288	}	345	}
289	#endif	346	#endif
290		347
291	#define array_roundsize(type,n) ((n) \| 4 & ~3)	348	#define array_roundsize(type,n) (((n) \| 4) & ~3)
292		349
293	#define array_needsize(type,base,cur,cnt,init) \	350	#define array_needsize(type,base,cur,cnt,init) \
294	if (expect_false ((cnt) > cur)) \	351	if (expect_false ((cnt) > cur)) \
295	{ \	352	{ \
296	int newcnt = cur; \	353	int newcnt = cur; \
…		…
311	stem ## max = array_roundsize (stem ## cnt >> 1); \	368	stem ## max = array_roundsize (stem ## cnt >> 1); \
312	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\	369	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
313	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	370	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
314	}	371	}
315		372
316	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
317	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
318	#define array_free_microshit(stem) \
319	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
320
321	#define array_free(stem, idx) \	373	#define array_free(stem, idx) \
322	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;
323		375
324	/*****************************************************************************/	376	/*****************************************************************************/
325		377
…		…
339	void	391	void
340	ev_feed_event (EV_P_ void *w, int revents)	392	ev_feed_event (EV_P_ void *w, int revents)
341	{	393	{
342	W w_ = (W)w;	394	W w_ = (W)w;
343		395
344	if (w_->pending)	396	if (expect_false (w_->pending))
345	{	397	{
346	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;	398	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
347	return;	399	return;
348	}	400	}
349		401
		402	if (expect_false (!w_->cb))
		403	return;
		404
350	w_->pending = ++pendingcnt [ABSPRI (w_)];	405	w_->pending = ++pendingcnt [ABSPRI (w_)];
351	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));	406	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
352	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;	407	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
353	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;	408	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
354	}	409	}
355		410
356	static void	411	static void
…		…
383	fd_event (EV_A_ fd, revents);	438	fd_event (EV_A_ fd, revents);
384	}	439	}
385		440
386	/*****************************************************************************/	441	/*****************************************************************************/
387		442
388	static void	443	inline void
389	fd_reify (EV_P)	444	fd_reify (EV_P)
390	{	445	{
391	int i;	446	int i;
392		447
393	for (i = 0; i < fdchangecnt; ++i)	448	for (i = 0; i < fdchangecnt; ++i)
…		…
399	int events = 0;	454	int events = 0;
400		455
401	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	456	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
402	events \|= w->events;	457	events \|= w->events;
403		458
		459	#if EV_SELECT_IS_WINSOCKET
		460	if (events)
		461	{
		462	unsigned long argp;
		463	anfd->handle = _get_osfhandle (fd);
		464	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		465	}
		466	#endif
		467
404	anfd->reify = 0;	468	anfd->reify = 0;
405		469
406	method_modify (EV_A_ fd, anfd->events, events);	470	backend_modify (EV_A_ fd, anfd->events, events);
407	anfd->events = events;	471	anfd->events = events;
408	}	472	}
409		473
410	fdchangecnt = 0;	474	fdchangecnt = 0;
411	}	475	}
412		476
413	static void	477	static void
414	fd_change (EV_P_ int fd)	478	fd_change (EV_P_ int fd)
415	{	479	{
416	if (anfds [fd].reify)	480	if (expect_false (anfds [fd].reify))
417	return;	481	return;
418		482
419	anfds [fd].reify = 1;	483	anfds [fd].reify = 1;
420		484
421	++fdchangecnt;	485	++fdchangecnt;
422	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	486	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
423	fdchanges [fdchangecnt - 1] = fd;	487	fdchanges [fdchangecnt - 1] = fd;
424	}	488	}
425		489
426	static void	490	static void
427	fd_kill (EV_P_ int fd)	491	fd_kill (EV_P_ int fd)
…		…
433	ev_io_stop (EV_A_ w);	497	ev_io_stop (EV_A_ w);
434	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	498	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
435	}	499	}
436	}	500	}
437		501
438	static int	502	inline int
439	fd_valid (int fd)	503	fd_valid (int fd)
440	{	504	{
441	#ifdef WIN32	505	#ifdef _WIN32
442	return !!win32_get_osfhandle (fd);	506	return _get_osfhandle (fd) != -1;
443	#else	507	#else
444	return fcntl (fd, F_GETFD) != -1;	508	return fcntl (fd, F_GETFD) != -1;
445	#endif	509	#endif
446	}	510	}
447		511
…		…
469	fd_kill (EV_A_ fd);	533	fd_kill (EV_A_ fd);
470	return;	534	return;
471	}	535	}
472	}	536	}
473		537
474	/* usually called after fork if method needs to re-arm all fds from scratch */	538	/* usually called after fork if backend needs to re-arm all fds from scratch */
475	static void	539	static void
476	fd_rearm_all (EV_P)	540	fd_rearm_all (EV_P)
477	{	541	{
478	int fd;	542	int fd;
479		543
…		…
528	heap [k] = w;	592	heap [k] = w;
529	((W)heap [k])->active = k + 1;	593	((W)heap [k])->active = k + 1;
530	}	594	}
531		595
532	inline void	596	inline void
533	adjustheap (WT *heap, int N, int k, ev_tstamp at)	597	adjustheap (WT *heap, int N, int k)
534	{	598	{
535	ev_tstamp old_at = heap [k]->at;	599	upheap (heap, k);
536	heap [k]->at = at;
537
538	if (old_at < at)
539	downheap (heap, N, k);	600	downheap (heap, N, k);
540	else
541	upheap (heap, k);
542	}	601	}
543		602
544	/*****************************************************************************/	603	/*****************************************************************************/
545		604
546	typedef struct	605	typedef struct
…		…
569	}	628	}
570		629
571	static void	630	static void
572	sighandler (int signum)	631	sighandler (int signum)
573	{	632	{
574	#if WIN32	633	#if _WIN32
575	signal (signum, sighandler);	634	signal (signum, sighandler);
576	#endif	635	#endif
577		636
578	signals [signum - 1].gotsig = 1;	637	signals [signum - 1].gotsig = 1;
579		638
580	if (!gotsig)	639	if (!gotsig)
581	{	640	{
582	int old_errno = errno;	641	int old_errno = errno;
583	gotsig = 1;	642	gotsig = 1;
584	#ifdef WIN32
585	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
586	#else
587	write (sigpipe [1], &signum, 1);	643	write (sigpipe [1], &signum, 1);
588	#endif
589	errno = old_errno;	644	errno = old_errno;
590	}	645	}
591	}	646	}
592		647
593	void	648	void
594	ev_feed_signal_event (EV_P_ int signum)	649	ev_feed_signal_event (EV_P_ int signum)
595	{	650	{
596	WL w;	651	WL w;
597		652
598	#if EV_MULTIPLICITY	653	#if EV_MULTIPLICITY
599	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	654	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
600	#endif	655	#endif
601		656
602	--signum;	657	--signum;
603		658
604	if (signum < 0 \|\| signum >= signalmax)	659	if (signum < 0 \|\| signum >= signalmax)
…		…
613	static void	668	static void
614	sigcb (EV_P_ struct ev_io *iow, int revents)	669	sigcb (EV_P_ struct ev_io *iow, int revents)
615	{	670	{
616	int signum;	671	int signum;
617		672
618	#ifdef WIN32
619	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
620	#else
621	read (sigpipe [0], &revents, 1);	673	read (sigpipe [0], &revents, 1);
622	#endif
623	gotsig = 0;	674	gotsig = 0;
624		675
625	for (signum = signalmax; signum--; )	676	for (signum = signalmax; signum--; )
626	if (signals [signum].gotsig)	677	if (signals [signum].gotsig)
627	ev_feed_signal_event (EV_A_ signum + 1);	678	ev_feed_signal_event (EV_A_ signum + 1);
628	}	679	}
629		680
630	static void	681	static void
		682	fd_intern (int fd)
		683	{
		684	#ifdef _WIN32
		685	int arg = 1;
		686	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		687	#else
		688	fcntl (fd, F_SETFD, FD_CLOEXEC);
		689	fcntl (fd, F_SETFL, O_NONBLOCK);
		690	#endif
		691	}
		692
		693	static void
631	siginit (EV_P)	694	siginit (EV_P)
632	{	695	{
633	#ifndef WIN32	696	fd_intern (sigpipe [0]);
634	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	697	fd_intern (sigpipe [1]);
635	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
636
637	/* rather than sort out wether we really need nb, set it */
638	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
639	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
640	#endif
641		698
642	ev_io_set (&sigev, sigpipe [0], EV_READ);	699	ev_io_set (&sigev, sigpipe [0], EV_READ);
643	ev_io_start (EV_A_ &sigev);	700	ev_io_start (EV_A_ &sigev);
644	ev_unref (EV_A); /* child watcher should not keep loop alive */	701	ev_unref (EV_A); /* child watcher should not keep loop alive */
645	}	702	}
646		703
647	/*****************************************************************************/	704	/*****************************************************************************/
648		705
649	static struct ev_child *childs [PID_HASHSIZE];	706	static struct ev_child *childs [PID_HASHSIZE];
650		707
651	#ifndef WIN32	708	#ifndef _WIN32
652		709
653	static struct ev_signal childev;	710	static struct ev_signal childev;
654		711
655	#ifndef WCONTINUED	712	#ifndef WCONTINUED
656	# define WCONTINUED 0	713	# define WCONTINUED 0
…		…
677	int pid, status;	734	int pid, status;
678		735
679	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	736	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
680	{	737	{
681	/* make sure we are called again until all childs have been reaped */	738	/* make sure we are called again until all childs have been reaped */
		739	/* we need to do it this way so that the callback gets called before we continue */
682	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	740	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
683		741
684	child_reap (EV_A_ sw, pid, pid, status);	742	child_reap (EV_A_ sw, pid, pid, status);
685	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	743	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
686	}	744	}
687	}	745	}
688		746
689	#endif	747	#endif
690		748
691	/*****************************************************************************/	749	/*****************************************************************************/
692		750
		751	#if EV_USE_PORT
		752	# include "ev_port.c"
		753	#endif
693	#if EV_USE_KQUEUE	754	#if EV_USE_KQUEUE
694	# include "ev_kqueue.c"	755	# include "ev_kqueue.c"
695	#endif	756	#endif
696	#if EV_USE_EPOLL	757	#if EV_USE_EPOLL
697	# include "ev_epoll.c"	758	# include "ev_epoll.c"
…		…
717		778
718	/* return true if we are running with elevated privileges and should ignore env variables */	779	/* return true if we are running with elevated privileges and should ignore env variables */
719	static int	780	static int
720	enable_secure (void)	781	enable_secure (void)
721	{	782	{
722	#ifdef WIN32	783	#ifdef _WIN32
723	return 0;	784	return 0;
724	#else	785	#else
725	return getuid () != geteuid ()	786	return getuid () != geteuid ()
726	\|\| getgid () != getegid ();	787	\|\| getgid () != getegid ();
727	#endif	788	#endif
728	}	789	}
729		790
730	int	791	unsigned int
731	ev_method (EV_P)	792	ev_supported_backends (void)
732	{	793	{
733	return method;	794	unsigned int flags = 0;
734	}
735		795
736	static void	796	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
737	loop_init (EV_P_ int methods)	797	if (EV_USE_KQUEUE) flags \|= EVBACKEND_KQUEUE;
		798	if (EV_USE_EPOLL ) flags \|= EVBACKEND_EPOLL;
		799	if (EV_USE_POLL ) flags \|= EVBACKEND_POLL;
		800	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
		801
		802	return flags;
		803	}
		804
		805	unsigned int
		806	ev_recommended_backends (void)
738	{	807	{
739	if (!method)	808	unsigned int flags = ev_supported_backends ();
		809
		810	#ifndef __NetBSD__
		811	/* kqueue is borked on everything but netbsd apparently */
		812	/* it usually doesn't work correctly on anything but sockets and pipes */
		813	flags &= ~EVBACKEND_KQUEUE;
		814	#endif
		815	#ifdef __APPLE__
		816	// flags &= ~EVBACKEND_KQUEUE; for documentation
		817	flags &= ~EVBACKEND_POLL;
		818	#endif
		819
		820	return flags;
		821	}
		822
		823	unsigned int
		824	ev_embeddable_backends (void)
		825	{
		826	return EVBACKEND_EPOLL
		827	\| EVBACKEND_KQUEUE
		828	\| EVBACKEND_PORT;
		829	}
		830
		831	unsigned int
		832	ev_backend (EV_P)
		833	{
		834	return backend;
		835	}
		836
		837	static void
		838	loop_init (EV_P_ unsigned int flags)
		839	{
		840	if (!backend)
740	{	841	{
741	#if EV_USE_MONOTONIC	842	#if EV_USE_MONOTONIC
742	{	843	{
743	struct timespec ts;	844	struct timespec ts;
744	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	845	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
749	ev_rt_now = ev_time ();	850	ev_rt_now = ev_time ();
750	mn_now = get_clock ();	851	mn_now = get_clock ();
751	now_floor = mn_now;	852	now_floor = mn_now;
752	rtmn_diff = ev_rt_now - mn_now;	853	rtmn_diff = ev_rt_now - mn_now;
753		854
754	if (methods == EVMETHOD_AUTO)	855	if (!(flags & EVFLAG_NOENV)
755	if (!enable_secure () && getenv ("LIBEV_METHODS"))	856	&& !enable_secure ()
		857	&& getenv ("LIBEV_FLAGS"))
756	methods = atoi (getenv ("LIBEV_METHODS"));	858	flags = atoi (getenv ("LIBEV_FLAGS"));
757	else
758	methods = EVMETHOD_ANY;
759		859
760	method = 0;	860	if (!(flags & 0x0000ffffUL))
761	#if EV_USE_WIN32	861	flags \|= ev_recommended_backends ();
762	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	862
		863	backend = 0;
		864	#if EV_USE_PORT
		865	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
763	#endif	866	#endif
764	#if EV_USE_KQUEUE	867	#if EV_USE_KQUEUE
765	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	868	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
766	#endif	869	#endif
767	#if EV_USE_EPOLL	870	#if EV_USE_EPOLL
768	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	871	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
769	#endif	872	#endif
770	#if EV_USE_POLL	873	#if EV_USE_POLL
771	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	874	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
772	#endif	875	#endif
773	#if EV_USE_SELECT	876	#if EV_USE_SELECT
774	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	877	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
775	#endif	878	#endif
776		879
777	ev_init (&sigev, sigcb);	880	ev_init (&sigev, sigcb);
778	ev_set_priority (&sigev, EV_MAXPRI);	881	ev_set_priority (&sigev, EV_MAXPRI);
779	}	882	}
780	}	883	}
781		884
782	void	885	static void
783	loop_destroy (EV_P)	886	loop_destroy (EV_P)
784	{	887	{
785	int i;	888	int i;
786		889
787	#if EV_USE_WIN32	890	#if EV_USE_PORT
788	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	891	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
789	#endif	892	#endif
790	#if EV_USE_KQUEUE	893	#if EV_USE_KQUEUE
791	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	894	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
792	#endif	895	#endif
793	#if EV_USE_EPOLL	896	#if EV_USE_EPOLL
794	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	897	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
795	#endif	898	#endif
796	#if EV_USE_POLL	899	#if EV_USE_POLL
797	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	900	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
798	#endif	901	#endif
799	#if EV_USE_SELECT	902	#if EV_USE_SELECT
800	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	903	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
801	#endif	904	#endif
802		905
803	for (i = NUMPRI; i--; )	906	for (i = NUMPRI; i--; )
804	array_free (pending, [i]);	907	array_free (pending, [i]);
805		908
806	/* have to use the microsoft-never-gets-it-right macro */	909	/* have to use the microsoft-never-gets-it-right macro */
807	array_free_microshit (fdchange);	910	array_free (fdchange, EMPTY0);
808	array_free_microshit (timer);	911	array_free (timer, EMPTY0);
809	array_free_microshit (periodic);	912	#if EV_PERIODICS
810	array_free_microshit (idle);	913	array_free (periodic, EMPTY0);
811	array_free_microshit (prepare);	914	#endif
812	array_free_microshit (check);	915	array_free (idle, EMPTY0);
		916	array_free (prepare, EMPTY0);
		917	array_free (check, EMPTY0);
813		918
814	method = 0;	919	backend = 0;
815	}	920	}
816		921
817	static void	922	static void
818	loop_fork (EV_P)	923	loop_fork (EV_P)
819	{	924	{
		925	#if EV_USE_PORT
		926	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		927	#endif
		928	#if EV_USE_KQUEUE
		929	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		930	#endif
820	#if EV_USE_EPOLL	931	#if EV_USE_EPOLL
821	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	932	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
822	#endif
823	#if EV_USE_KQUEUE
824	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
825	#endif	933	#endif
826		934
827	if (ev_is_active (&sigev))	935	if (ev_is_active (&sigev))
828	{	936	{
829	/* default loop */	937	/* default loop */
…		…
842	postfork = 0;	950	postfork = 0;
843	}	951	}
844		952
845	#if EV_MULTIPLICITY	953	#if EV_MULTIPLICITY
846	struct ev_loop *	954	struct ev_loop *
847	ev_loop_new (int methods)	955	ev_loop_new (unsigned int flags)
848	{	956	{
849	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	957	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
850		958
851	memset (loop, 0, sizeof (struct ev_loop));	959	memset (loop, 0, sizeof (struct ev_loop));
852		960
853	loop_init (EV_A_ methods);	961	loop_init (EV_A_ flags);
854		962
855	if (ev_method (EV_A))	963	if (ev_backend (EV_A))
856	return loop;	964	return loop;
857		965
858	return 0;	966	return 0;
859	}	967	}
860		968
…		…
873		981
874	#endif	982	#endif
875		983
876	#if EV_MULTIPLICITY	984	#if EV_MULTIPLICITY
877	struct ev_loop *	985	struct ev_loop *
		986	ev_default_loop_init (unsigned int flags)
878	#else	987	#else
879	int	988	int
		989	ev_default_loop (unsigned int flags)
880	#endif	990	#endif
881	ev_default_loop (int methods)
882	{	991	{
883	if (sigpipe [0] == sigpipe [1])	992	if (sigpipe [0] == sigpipe [1])
884	if (pipe (sigpipe))	993	if (pipe (sigpipe))
885	return 0;	994	return 0;
886		995
887	if (!default_loop)	996	if (!ev_default_loop_ptr)
888	{	997	{
889	#if EV_MULTIPLICITY	998	#if EV_MULTIPLICITY
890	struct ev_loop *loop = default_loop = &default_loop_struct;	999	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
891	#else	1000	#else
892	default_loop = 1;	1001	ev_default_loop_ptr = 1;
893	#endif	1002	#endif
894		1003
895	loop_init (EV_A_ methods);	1004	loop_init (EV_A_ flags);
896		1005
897	if (ev_method (EV_A))	1006	if (ev_backend (EV_A))
898	{	1007	{
899	siginit (EV_A);	1008	siginit (EV_A);
900		1009
901	#ifndef WIN32	1010	#ifndef _WIN32
902	ev_signal_init (&childev, childcb, SIGCHLD);	1011	ev_signal_init (&childev, childcb, SIGCHLD);
903	ev_set_priority (&childev, EV_MAXPRI);	1012	ev_set_priority (&childev, EV_MAXPRI);
904	ev_signal_start (EV_A_ &childev);	1013	ev_signal_start (EV_A_ &childev);
905	ev_unref (EV_A); /* child watcher should not keep loop alive */	1014	ev_unref (EV_A); /* child watcher should not keep loop alive */
906	#endif	1015	#endif
907	}	1016	}
908	else	1017	else
909	default_loop = 0;	1018	ev_default_loop_ptr = 0;
910	}	1019	}
911		1020
912	return default_loop;	1021	return ev_default_loop_ptr;
913	}	1022	}
914		1023
915	void	1024	void
916	ev_default_destroy (void)	1025	ev_default_destroy (void)
917	{	1026	{
918	#if EV_MULTIPLICITY	1027	#if EV_MULTIPLICITY
919	struct ev_loop *loop = default_loop;	1028	struct ev_loop *loop = ev_default_loop_ptr;
920	#endif	1029	#endif
921		1030
922	#ifndef WIN32	1031	#ifndef _WIN32
923	ev_ref (EV_A); /* child watcher */	1032	ev_ref (EV_A); /* child watcher */
924	ev_signal_stop (EV_A_ &childev);	1033	ev_signal_stop (EV_A_ &childev);
925	#endif	1034	#endif
926		1035
927	ev_ref (EV_A); /* signal watcher */	1036	ev_ref (EV_A); /* signal watcher */
…		…
935		1044
936	void	1045	void
937	ev_default_fork (void)	1046	ev_default_fork (void)
938	{	1047	{
939	#if EV_MULTIPLICITY	1048	#if EV_MULTIPLICITY
940	struct ev_loop *loop = default_loop;	1049	struct ev_loop *loop = ev_default_loop_ptr;
941	#endif	1050	#endif
942		1051
943	if (method)	1052	if (backend)
944	postfork = 1;	1053	postfork = 1;
945	}	1054	}
946		1055
947	/*****************************************************************************/	1056	/*****************************************************************************/
948		1057
…		…
956	return 1;	1065	return 1;
957		1066
958	return 0;	1067	return 0;
959	}	1068	}
960		1069
961	static void	1070	inline void
962	call_pending (EV_P)	1071	call_pending (EV_P)
963	{	1072	{
964	int pri;	1073	int pri;
965		1074
966	for (pri = NUMPRI; pri--; )	1075	for (pri = NUMPRI; pri--; )
967	while (pendingcnt [pri])	1076	while (pendingcnt [pri])
968	{	1077	{
969	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1078	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
970		1079
971	if (p->w)	1080	if (expect_true (p->w))
972	{	1081	{
973	p->w->pending = 0;	1082	p->w->pending = 0;
974	EV_CB_INVOKE (p->w, p->events);	1083	EV_CB_INVOKE (p->w, p->events);
975	}	1084	}
976	}	1085	}
977	}	1086	}
978		1087
979	static void	1088	inline void
980	timers_reify (EV_P)	1089	timers_reify (EV_P)
981	{	1090	{
982	while (timercnt && ((WT)timers [0])->at <= mn_now)	1091	while (timercnt && ((WT)timers [0])->at <= mn_now)
983	{	1092	{
984	struct ev_timer *w = timers [0];	1093	struct ev_timer *w = timers [0];
…		…
987		1096
988	/* first reschedule or stop timer */	1097	/* first reschedule or stop timer */
989	if (w->repeat)	1098	if (w->repeat)
990	{	1099	{
991	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1100	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1101
992	((WT)w)->at = mn_now + w->repeat;	1102	((WT)w)->at += w->repeat;
		1103	if (((WT)w)->at < mn_now)
		1104	((WT)w)->at = mn_now;
		1105
993	downheap ((WT *)timers, timercnt, 0);	1106	downheap ((WT *)timers, timercnt, 0);
994	}	1107	}
995	else	1108	else
996	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1109	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
997		1110
998	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1111	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
999	}	1112	}
1000	}	1113	}
1001		1114
1002	static void	1115	#if EV_PERIODICS
		1116	inline void
1003	periodics_reify (EV_P)	1117	periodics_reify (EV_P)
1004	{	1118	{
1005	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1119	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1006	{	1120	{
1007	struct ev_periodic *w = periodics [0];	1121	struct ev_periodic *w = periodics [0];
…		…
1009	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1123	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1010		1124
1011	/* first reschedule or stop timer */	1125	/* first reschedule or stop timer */
1012	if (w->reschedule_cb)	1126	if (w->reschedule_cb)
1013	{	1127	{
1014	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1128	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1015
1016	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1129	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1017	downheap ((WT *)periodics, periodiccnt, 0);	1130	downheap ((WT *)periodics, periodiccnt, 0);
1018	}	1131	}
1019	else if (w->interval)	1132	else if (w->interval)
1020	{	1133	{
…		…
1047		1160
1048	/* now rebuild the heap */	1161	/* now rebuild the heap */
1049	for (i = periodiccnt >> 1; i--; )	1162	for (i = periodiccnt >> 1; i--; )
1050	downheap ((WT *)periodics, periodiccnt, i);	1163	downheap ((WT *)periodics, periodiccnt, i);
1051	}	1164	}
		1165	#endif
1052		1166
1053	inline int	1167	inline int
1054	time_update_monotonic (EV_P)	1168	time_update_monotonic (EV_P)
1055	{	1169	{
1056	mn_now = get_clock ();	1170	mn_now = get_clock ();
…		…
1066	ev_rt_now = ev_time ();	1180	ev_rt_now = ev_time ();
1067	return 1;	1181	return 1;
1068	}	1182	}
1069	}	1183	}
1070		1184
1071	static void	1185	inline void
1072	time_update (EV_P)	1186	time_update (EV_P)
1073	{	1187	{
1074	int i;	1188	int i;
1075		1189
1076	#if EV_USE_MONOTONIC	1190	#if EV_USE_MONOTONIC
…		…
1090	ev_rt_now = ev_time ();	1204	ev_rt_now = ev_time ();
1091	mn_now = get_clock ();	1205	mn_now = get_clock ();
1092	now_floor = mn_now;	1206	now_floor = mn_now;
1093	}	1207	}
1094		1208
		1209	# if EV_PERIODICS
1095	periodics_reschedule (EV_A);	1210	periodics_reschedule (EV_A);
		1211	# endif
1096	/* no timer adjustment, as the monotonic clock doesn't jump */	1212	/* no timer adjustment, as the monotonic clock doesn't jump */
1097	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1213	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1098	}	1214	}
1099	}	1215	}
1100	else	1216	else
…		…
1102	{	1218	{
1103	ev_rt_now = ev_time ();	1219	ev_rt_now = ev_time ();
1104		1220
1105	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1221	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1106	{	1222	{
		1223	#if EV_PERIODICS
1107	periodics_reschedule (EV_A);	1224	periodics_reschedule (EV_A);
		1225	#endif
1108		1226
1109	/* adjust timers. this is easy, as the offset is the same for all */	1227	/* adjust timers. this is easy, as the offset is the same for all */
1110	for (i = 0; i < timercnt; ++i)	1228	for (i = 0; i < timercnt; ++i)
1111	((WT)timers [i])->at += ev_rt_now - mn_now;	1229	((WT)timers [i])->at += ev_rt_now - mn_now;
1112	}	1230	}
…		…
1133	ev_loop (EV_P_ int flags)	1251	ev_loop (EV_P_ int flags)
1134	{	1252	{
1135	double block;	1253	double block;
1136	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1254	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
1137		1255
1138	do	1256	while (activecnt)
1139	{	1257	{
1140	/* queue check watchers (and execute them) */	1258	/* queue check watchers (and execute them) */
1141	if (expect_false (preparecnt))	1259	if (expect_false (preparecnt))
1142	{	1260	{
1143	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1261	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1171	{	1289	{
1172	block = MAX_BLOCKTIME;	1290	block = MAX_BLOCKTIME;
1173		1291
1174	if (timercnt)	1292	if (timercnt)
1175	{	1293	{
1176	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1294	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1177	if (block > to) block = to;	1295	if (block > to) block = to;
1178	}	1296	}
1179		1297
		1298	#if EV_PERIODICS
1180	if (periodiccnt)	1299	if (periodiccnt)
1181	{	1300	{
1182	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1301	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1183	if (block > to) block = to;	1302	if (block > to) block = to;
1184	}	1303	}
		1304	#endif
1185		1305
1186	if (block < 0.) block = 0.;	1306	if (expect_false (block < 0.)) block = 0.;
1187	}	1307	}
1188		1308
1189	method_poll (EV_A_ block);	1309	backend_poll (EV_A_ block);
1190		1310
1191	/* update ev_rt_now, do magic */	1311	/* update ev_rt_now, do magic */
1192	time_update (EV_A);	1312	time_update (EV_A);
1193		1313
1194	/* queue pending timers and reschedule them */	1314	/* queue pending timers and reschedule them */
1195	timers_reify (EV_A); /* relative timers called last */	1315	timers_reify (EV_A); /* relative timers called last */
		1316	#if EV_PERIODICS
1196	periodics_reify (EV_A); /* absolute timers called first */	1317	periodics_reify (EV_A); /* absolute timers called first */
		1318	#endif
1197		1319
1198	/* queue idle watchers unless io or timers are pending */	1320	/* queue idle watchers unless io or timers are pending */
1199	if (idlecnt && !any_pending (EV_A))	1321	if (idlecnt && !any_pending (EV_A))
1200	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1322	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1201		1323
1202	/* queue check watchers, to be executed first */	1324	/* queue check watchers, to be executed first */
1203	if (checkcnt)	1325	if (expect_false (checkcnt))
1204	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1326	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1205		1327
1206	call_pending (EV_A);	1328	call_pending (EV_A);
		1329
		1330	if (expect_false (loop_done))
		1331	break;
1207	}	1332	}
1208	while (activecnt && !loop_done);
1209		1333
1210	if (loop_done != 2)	1334	if (loop_done != 2)
1211	loop_done = 0;	1335	loop_done = 0;
1212	}	1336	}
1213		1337
…		…
1273	void	1397	void
1274	ev_io_start (EV_P_ struct ev_io *w)	1398	ev_io_start (EV_P_ struct ev_io *w)
1275	{	1399	{
1276	int fd = w->fd;	1400	int fd = w->fd;
1277		1401
1278	if (ev_is_active (w))	1402	if (expect_false (ev_is_active (w)))
1279	return;	1403	return;
1280		1404
1281	assert (("ev_io_start called with negative fd", fd >= 0));	1405	assert (("ev_io_start called with negative fd", fd >= 0));
1282		1406
1283	ev_start (EV_A_ (W)w, 1);	1407	ev_start (EV_A_ (W)w, 1);
…		…
1289		1413
1290	void	1414	void
1291	ev_io_stop (EV_P_ struct ev_io *w)	1415	ev_io_stop (EV_P_ struct ev_io *w)
1292	{	1416	{
1293	ev_clear_pending (EV_A_ (W)w);	1417	ev_clear_pending (EV_A_ (W)w);
1294	if (!ev_is_active (w))	1418	if (expect_false (!ev_is_active (w)))
1295	return;	1419	return;
		1420
		1421	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1296		1422
1297	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1423	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1298	ev_stop (EV_A_ (W)w);	1424	ev_stop (EV_A_ (W)w);
1299		1425
1300	fd_change (EV_A_ w->fd);	1426	fd_change (EV_A_ w->fd);
1301	}	1427	}
1302		1428
1303	void	1429	void
1304	ev_timer_start (EV_P_ struct ev_timer *w)	1430	ev_timer_start (EV_P_ struct ev_timer *w)
1305	{	1431	{
1306	if (ev_is_active (w))	1432	if (expect_false (ev_is_active (w)))
1307	return;	1433	return;
1308		1434
1309	((WT)w)->at += mn_now;	1435	((WT)w)->at += mn_now;
1310		1436
1311	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1437	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1312		1438
1313	ev_start (EV_A_ (W)w, ++timercnt);	1439	ev_start (EV_A_ (W)w, ++timercnt);
1314	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1440	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1315	timers [timercnt - 1] = w;	1441	timers [timercnt - 1] = w;
1316	upheap ((WT *)timers, timercnt - 1);	1442	upheap ((WT *)timers, timercnt - 1);
1317		1443
1318	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1444	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1319	}	1445	}
1320		1446
1321	void	1447	void
1322	ev_timer_stop (EV_P_ struct ev_timer *w)	1448	ev_timer_stop (EV_P_ struct ev_timer *w)
1323	{	1449	{
1324	ev_clear_pending (EV_A_ (W)w);	1450	ev_clear_pending (EV_A_ (W)w);
1325	if (!ev_is_active (w))	1451	if (expect_false (!ev_is_active (w)))
1326	return;	1452	return;
1327		1453
1328	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1454	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1329		1455
1330	if (((W)w)->active < timercnt--)	1456	if (expect_true (((W)w)->active < timercnt--))
1331	{	1457	{
1332	timers [((W)w)->active - 1] = timers [timercnt];	1458	timers [((W)w)->active - 1] = timers [timercnt];
1333	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1459	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1334	}	1460	}
1335		1461
1336	((WT)w)->at = w->repeat;	1462	((WT)w)->at -= mn_now;
1337		1463
1338	ev_stop (EV_A_ (W)w);	1464	ev_stop (EV_A_ (W)w);
1339	}	1465	}
1340		1466
1341	void	1467	void
1342	ev_timer_again (EV_P_ struct ev_timer *w)	1468	ev_timer_again (EV_P_ struct ev_timer *w)
1343	{	1469	{
1344	if (ev_is_active (w))	1470	if (ev_is_active (w))
1345	{	1471	{
1346	if (w->repeat)	1472	if (w->repeat)
		1473	{
		1474	((WT)w)->at = mn_now + w->repeat;
1347	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1475	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
		1476	}
1348	else	1477	else
1349	ev_timer_stop (EV_A_ w);	1478	ev_timer_stop (EV_A_ w);
1350	}	1479	}
1351	else if (w->repeat)	1480	else if (w->repeat)
		1481	{
		1482	w->at = w->repeat;
1352	ev_timer_start (EV_A_ w);	1483	ev_timer_start (EV_A_ w);
		1484	}
1353	}	1485	}
1354		1486
		1487	#if EV_PERIODICS
1355	void	1488	void
1356	ev_periodic_start (EV_P_ struct ev_periodic *w)	1489	ev_periodic_start (EV_P_ struct ev_periodic *w)
1357	{	1490	{
1358	if (ev_is_active (w))	1491	if (expect_false (ev_is_active (w)))
1359	return;	1492	return;
1360		1493
1361	if (w->reschedule_cb)	1494	if (w->reschedule_cb)
1362	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1495	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1363	else if (w->interval)	1496	else if (w->interval)
…		…
1366	/* this formula differs from the one in periodic_reify because we do not always round up */	1499	/* this formula differs from the one in periodic_reify because we do not always round up */
1367	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1500	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1368	}	1501	}
1369		1502
1370	ev_start (EV_A_ (W)w, ++periodiccnt);	1503	ev_start (EV_A_ (W)w, ++periodiccnt);
1371	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1504	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1372	periodics [periodiccnt - 1] = w;	1505	periodics [periodiccnt - 1] = w;
1373	upheap ((WT *)periodics, periodiccnt - 1);	1506	upheap ((WT *)periodics, periodiccnt - 1);
1374		1507
1375	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1508	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1376	}	1509	}
1377		1510
1378	void	1511	void
1379	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1512	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1380	{	1513	{
1381	ev_clear_pending (EV_A_ (W)w);	1514	ev_clear_pending (EV_A_ (W)w);
1382	if (!ev_is_active (w))	1515	if (expect_false (!ev_is_active (w)))
1383	return;	1516	return;
1384		1517
1385	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1518	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1386		1519
1387	if (((W)w)->active < periodiccnt--)	1520	if (expect_true (((W)w)->active < periodiccnt--))
1388	{	1521	{
1389	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1522	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1390	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1523	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1391	}	1524	}
1392		1525
1393	ev_stop (EV_A_ (W)w);	1526	ev_stop (EV_A_ (W)w);
1394	}	1527	}
1395		1528
…		…
1398	{	1531	{
1399	/* TODO: use adjustheap and recalculation */	1532	/* TODO: use adjustheap and recalculation */
1400	ev_periodic_stop (EV_A_ w);	1533	ev_periodic_stop (EV_A_ w);
1401	ev_periodic_start (EV_A_ w);	1534	ev_periodic_start (EV_A_ w);
1402	}	1535	}
		1536	#endif
1403		1537
1404	void	1538	void
1405	ev_idle_start (EV_P_ struct ev_idle *w)	1539	ev_idle_start (EV_P_ struct ev_idle *w)
1406	{	1540	{
1407	if (ev_is_active (w))	1541	if (expect_false (ev_is_active (w)))
1408	return;	1542	return;
1409		1543
1410	ev_start (EV_A_ (W)w, ++idlecnt);	1544	ev_start (EV_A_ (W)w, ++idlecnt);
1411	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));	1545	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1412	idles [idlecnt - 1] = w;	1546	idles [idlecnt - 1] = w;
1413	}	1547	}
1414		1548
1415	void	1549	void
1416	ev_idle_stop (EV_P_ struct ev_idle *w)	1550	ev_idle_stop (EV_P_ struct ev_idle *w)
1417	{	1551	{
1418	ev_clear_pending (EV_A_ (W)w);	1552	ev_clear_pending (EV_A_ (W)w);
1419	if (ev_is_active (w))	1553	if (expect_false (!ev_is_active (w)))
1420	return;	1554	return;
1421		1555
1422	idles [((W)w)->active - 1] = idles [--idlecnt];	1556	idles [((W)w)->active - 1] = idles [--idlecnt];
1423	ev_stop (EV_A_ (W)w);	1557	ev_stop (EV_A_ (W)w);
1424	}	1558	}
1425		1559
1426	void	1560	void
1427	ev_prepare_start (EV_P_ struct ev_prepare *w)	1561	ev_prepare_start (EV_P_ struct ev_prepare *w)
1428	{	1562	{
1429	if (ev_is_active (w))	1563	if (expect_false (ev_is_active (w)))
1430	return;	1564	return;
1431		1565
1432	ev_start (EV_A_ (W)w, ++preparecnt);	1566	ev_start (EV_A_ (W)w, ++preparecnt);
1433	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));	1567	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1434	prepares [preparecnt - 1] = w;	1568	prepares [preparecnt - 1] = w;
1435	}	1569	}
1436		1570
1437	void	1571	void
1438	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1572	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1439	{	1573	{
1440	ev_clear_pending (EV_A_ (W)w);	1574	ev_clear_pending (EV_A_ (W)w);
1441	if (ev_is_active (w))	1575	if (expect_false (!ev_is_active (w)))
1442	return;	1576	return;
1443		1577
1444	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1578	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1445	ev_stop (EV_A_ (W)w);	1579	ev_stop (EV_A_ (W)w);
1446	}	1580	}
1447		1581
1448	void	1582	void
1449	ev_check_start (EV_P_ struct ev_check *w)	1583	ev_check_start (EV_P_ struct ev_check *w)
1450	{	1584	{
1451	if (ev_is_active (w))	1585	if (expect_false (ev_is_active (w)))
1452	return;	1586	return;
1453		1587
1454	ev_start (EV_A_ (W)w, ++checkcnt);	1588	ev_start (EV_A_ (W)w, ++checkcnt);
1455	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));	1589	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1456	checks [checkcnt - 1] = w;	1590	checks [checkcnt - 1] = w;
1457	}	1591	}
1458		1592
1459	void	1593	void
1460	ev_check_stop (EV_P_ struct ev_check *w)	1594	ev_check_stop (EV_P_ struct ev_check *w)
1461	{	1595	{
1462	ev_clear_pending (EV_A_ (W)w);	1596	ev_clear_pending (EV_A_ (W)w);
1463	if (ev_is_active (w))	1597	if (expect_false (!ev_is_active (w)))
1464	return;	1598	return;
1465		1599
1466	checks [((W)w)->active - 1] = checks [--checkcnt];	1600	checks [((W)w)->active - 1] = checks [--checkcnt];
1467	ev_stop (EV_A_ (W)w);	1601	ev_stop (EV_A_ (W)w);
1468	}	1602	}
…		…
1473		1607
1474	void	1608	void
1475	ev_signal_start (EV_P_ struct ev_signal *w)	1609	ev_signal_start (EV_P_ struct ev_signal *w)
1476	{	1610	{
1477	#if EV_MULTIPLICITY	1611	#if EV_MULTIPLICITY
1478	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1612	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1479	#endif	1613	#endif
1480	if (ev_is_active (w))	1614	if (expect_false (ev_is_active (w)))
1481	return;	1615	return;
1482		1616
1483	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1617	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1484		1618
1485	ev_start (EV_A_ (W)w, 1);	1619	ev_start (EV_A_ (W)w, 1);
1486	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1620	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1487	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1621	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1488		1622
1489	if (!((WL)w)->next)	1623	if (!((WL)w)->next)
1490	{	1624	{
1491	#if WIN32	1625	#if _WIN32
1492	signal (w->signum, sighandler);	1626	signal (w->signum, sighandler);
1493	#else	1627	#else
1494	struct sigaction sa;	1628	struct sigaction sa;
1495	sa.sa_handler = sighandler;	1629	sa.sa_handler = sighandler;
1496	sigfillset (&sa.sa_mask);	1630	sigfillset (&sa.sa_mask);
…		…
1502		1636
1503	void	1637	void
1504	ev_signal_stop (EV_P_ struct ev_signal *w)	1638	ev_signal_stop (EV_P_ struct ev_signal *w)
1505	{	1639	{
1506	ev_clear_pending (EV_A_ (W)w);	1640	ev_clear_pending (EV_A_ (W)w);
1507	if (!ev_is_active (w))	1641	if (expect_false (!ev_is_active (w)))
1508	return;	1642	return;
1509		1643
1510	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1644	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1511	ev_stop (EV_A_ (W)w);	1645	ev_stop (EV_A_ (W)w);
1512		1646
…		…
1516		1650
1517	void	1651	void
1518	ev_child_start (EV_P_ struct ev_child *w)	1652	ev_child_start (EV_P_ struct ev_child *w)
1519	{	1653	{
1520	#if EV_MULTIPLICITY	1654	#if EV_MULTIPLICITY
1521	assert (("child watchers are only supported in the default loop", loop == default_loop));	1655	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1522	#endif	1656	#endif
1523	if (ev_is_active (w))	1657	if (expect_false (ev_is_active (w)))
1524	return;	1658	return;
1525		1659
1526	ev_start (EV_A_ (W)w, 1);	1660	ev_start (EV_A_ (W)w, 1);
1527	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1661	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1528	}	1662	}
1529		1663
1530	void	1664	void
1531	ev_child_stop (EV_P_ struct ev_child *w)	1665	ev_child_stop (EV_P_ struct ev_child *w)
1532	{	1666	{
1533	ev_clear_pending (EV_A_ (W)w);	1667	ev_clear_pending (EV_A_ (W)w);
1534	if (ev_is_active (w))	1668	if (expect_false (!ev_is_active (w)))
1535	return;	1669	return;
1536		1670
1537	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1671	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1538	ev_stop (EV_A_ (W)w);	1672	ev_stop (EV_A_ (W)w);
1539	}	1673	}
		1674
		1675	#if EV_MULTIPLICITY
		1676	static void
		1677	embed_cb (EV_P_ struct ev_io *io, int revents)
		1678	{
		1679	struct ev_embed w = (struct ev_embed )(((char *)io) - offsetof (struct ev_embed, io));
		1680
		1681	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1682	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1683	}
		1684
		1685	void
		1686	ev_embed_start (EV_P_ struct ev_embed *w)
		1687	{
		1688	if (expect_false (ev_is_active (w)))
		1689	return;
		1690
		1691	{
		1692	struct ev_loop *loop = w->loop;
		1693	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1694	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1695	}
		1696
		1697	ev_io_start (EV_A_ &w->io);
		1698	ev_start (EV_A_ (W)w, 1);
		1699	}
		1700
		1701	void
		1702	ev_embed_stop (EV_P_ struct ev_embed *w)
		1703	{
		1704	ev_clear_pending (EV_A_ (W)w);
		1705	if (expect_false (!ev_is_active (w)))
		1706	return;
		1707
		1708	ev_io_stop (EV_A_ &w->io);
		1709	ev_stop (EV_A_ (W)w);
		1710	}
		1711	#endif
1540		1712
1541	/*****************************************************************************/	1713	/*****************************************************************************/
1542		1714
1543	struct ev_once	1715	struct ev_once
1544	{	1716	{
…		…
1576	void	1748	void
1577	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1749	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1578	{	1750	{
1579	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));	1751	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1580		1752
1581	if (!once)	1753	if (expect_false (!once))
		1754	{
1582	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1755	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1583	else	1756	return;
1584	{	1757	}
		1758
1585	once->cb = cb;	1759	once->cb = cb;
1586	once->arg = arg;	1760	once->arg = arg;
1587		1761
1588	ev_init (&once->io, once_cb_io);	1762	ev_init (&once->io, once_cb_io);
1589	if (fd >= 0)	1763	if (fd >= 0)
1590	{	1764	{
1591	ev_io_set (&once->io, fd, events);	1765	ev_io_set (&once->io, fd, events);
1592	ev_io_start (EV_A_ &once->io);	1766	ev_io_start (EV_A_ &once->io);
1593	}	1767	}
1594		1768
1595	ev_init (&once->to, once_cb_to);	1769	ev_init (&once->to, once_cb_to);
1596	if (timeout >= 0.)	1770	if (timeout >= 0.)
1597	{	1771	{
1598	ev_timer_set (&once->to, timeout, 0.);	1772	ev_timer_set (&once->to, timeout, 0.);
1599	ev_timer_start (EV_A_ &once->to);	1773	ev_timer_start (EV_A_ &once->to);
1600	}
1601	}	1774	}
1602	}	1775	}
1603		1776
1604	#ifdef __cplusplus	1777	#ifdef __cplusplus
1605	}	1778	}

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Comparing libev/ev.c (file contents): Revision 1.87 by root, Sat Nov 10 03:36:15 2007 UTC vs. Revision 1.134 by root, Fri Nov 23 19:13:33 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.87 by root, Sat Nov 10 03:36:15 2007 UTC vs.
Revision 1.134 by root, Fri Nov 23 19:13:33 2007 UTC