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

Comparing libev/ev.c (file contents):
Revision 1.85 by root, Sat Nov 10 03:13:50 2007 UTC vs.
Revision 1.139 by root, Sun Nov 25 09:24:37 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
33		42
34	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
36	# 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
37	# endif	57	# endif
38		58
		59	# ifndef EV_USE_SELECT
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
40	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
41	# endif	65	# endif
42		66
		67	# ifndef EV_USE_POLL
43	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
44	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
45	# endif	73	# endif
46		74
		75	# ifndef EV_USE_EPOLL
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
49	# endif	81	# endif
50		82
		83	# ifndef EV_USE_KQUEUE
51	# 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
52	# 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
53	# endif	97	# endif
54		98
55	#endif	99	#endif
56		100
57	#include <math.h>	101	#include <math.h>
…		…
66	#include <sys/types.h>	110	#include <sys/types.h>
67	#include <time.h>	111	#include <time.h>
68		112
69	#include <signal.h>	113	#include <signal.h>
70		114
71	#ifndef WIN32	115	#ifndef _WIN32
72	# include <unistd.h>	116	# include <unistd.h>
73	# include <sys/time.h>	117	# include <sys/time.h>
74	# 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
75	#endif	124	# endif
		125	#endif
		126
76	/**/	127	/**/
77		128
78	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
79	# 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
80	#endif	135	#endif
81		136
82	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
83	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
84	#endif	139	#endif
85		140
86	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
87	# 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
88	#endif	147	#endif
89		148
90	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
91	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
92	#endif	151	#endif
93		152
94	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
95	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
96	#endif	155	#endif
97		156
98	#ifndef EV_USE_WIN32
99	# ifdef WIN32
100	# define EV_USE_WIN32 0 /* it does not exist, use select */
101	# undef EV_USE_SELECT
102	# define EV_USE_SELECT 1
103	# else
104	# define EV_USE_WIN32 0
105	# endif
106	#endif
107
108	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
109	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
110	#endif	159	#endif
111		160
112	/**/	161	/**/
113		162
114	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
119	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
120	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
121	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
122	#endif	171	#endif
123		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
124	/**/	177	/**/
125		178
126	#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) */
127	#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) */
128	#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 */
129	/#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 */
130		183
131	#ifdef EV_H	184	#ifdef EV_H
132	# include EV_H	185	# include EV_H
133	#else	186	#else
134	# include "ev.h"	187	# include "ev.h"
135	#endif	188	#endif
136		189
137	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
138	# define expect(expr,value) __builtin_expect ((expr),(value))	191	# define expect(expr,value) __builtin_expect ((expr),(value))
139	# define inline inline	192	# define inline static inline
140	#else	193	#else
141	# define expect(expr,value) (expr)	194	# define expect(expr,value) (expr)
142	# define inline static	195	# define inline static
143	#endif	196	#endif
144		197
…		…
146	#define expect_true(expr) expect ((expr) != 0, 1)	199	#define expect_true(expr) expect ((expr) != 0, 1)
147		200
148	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	201	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
149	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	202	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
150		203
		204	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		205	#define EMPTY2(a,b) /* used to suppress some warnings */
		206
151	typedef struct ev_watcher *W;	207	typedef ev_watcher *W;
152	typedef struct ev_watcher_list *WL;	208	typedef ev_watcher_list *WL;
153	typedef struct ev_watcher_time *WT;	209	typedef ev_watcher_time *WT;
154		210
155	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	211	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
156		212
		213	#ifdef _WIN32
157	#include "ev_win32.c"	214	# include "ev_win32.c"
		215	#endif
158		216
159	/*****************************************************************************/	217	/*****************************************************************************/
160		218
161	static void (syserr_cb)(const char msg);	219	static void (syserr_cb)(const char msg);
162		220
…		…
209	typedef struct	267	typedef struct
210	{	268	{
211	WL head;	269	WL head;
212	unsigned char events;	270	unsigned char events;
213	unsigned char reify;	271	unsigned char reify;
		272	#if EV_SELECT_IS_WINSOCKET
		273	SOCKET handle;
		274	#endif
214	} ANFD;	275	} ANFD;
215		276
216	typedef struct	277	typedef struct
217	{	278	{
218	W w;	279	W w;
…		…
221		282
222	#if EV_MULTIPLICITY	283	#if EV_MULTIPLICITY
223		284
224	struct ev_loop	285	struct ev_loop
225	{	286	{
		287	ev_tstamp ev_rt_now;
		288	#define ev_rt_now ((loop)->ev_rt_now)
226	#define VAR(name,decl) decl;	289	#define VAR(name,decl) decl;
227	#include "ev_vars.h"	290	#include "ev_vars.h"
228	#undef VAR	291	#undef VAR
229	};	292	};
230	#include "ev_wrap.h"	293	#include "ev_wrap.h"
231		294
232	struct ev_loop default_loop_struct;	295	static struct ev_loop default_loop_struct;
233	static struct ev_loop *default_loop;	296	struct ev_loop *ev_default_loop_ptr;
234		297
235	#else	298	#else
236		299
		300	ev_tstamp ev_rt_now;
237	#define VAR(name,decl) static decl;	301	#define VAR(name,decl) static decl;
238	#include "ev_vars.h"	302	#include "ev_vars.h"
239	#undef VAR	303	#undef VAR
240		304
241	static int default_loop;	305	static int ev_default_loop_ptr;
242		306
243	#endif	307	#endif
244		308
245	/*****************************************************************************/	309	/*****************************************************************************/
246		310
247	inline ev_tstamp	311	ev_tstamp
248	ev_time (void)	312	ev_time (void)
249	{	313	{
250	#if EV_USE_REALTIME	314	#if EV_USE_REALTIME
251	struct timespec ts;	315	struct timespec ts;
252	clock_gettime (CLOCK_REALTIME, &ts);	316	clock_gettime (CLOCK_REALTIME, &ts);
…		…
279	{	343	{
280	return ev_rt_now;	344	return ev_rt_now;
281	}	345	}
282	#endif	346	#endif
283		347
284	#define array_roundsize(type,n) ((n) \| 4 & ~3)	348	#define array_roundsize(type,n) (((n) \| 4) & ~3)
285		349
286	#define array_needsize(type,base,cur,cnt,init) \	350	#define array_needsize(type,base,cur,cnt,init) \
287	if (expect_false ((cnt) > cur)) \	351	if (expect_false ((cnt) > cur)) \
288	{ \	352	{ \
289	int newcnt = cur; \	353	int newcnt = cur; \
…		…
304	stem ## max = array_roundsize (stem ## cnt >> 1); \	368	stem ## max = array_roundsize (stem ## cnt >> 1); \
305	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\	369	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
306	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	370	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
307	}	371	}
308		372
309	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
310	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
311	#define array_free_microshit(stem) \
312	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
313
314	#define array_free(stem, idx) \	373	#define array_free(stem, idx) \
315	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;
316		375
317	/*****************************************************************************/	376	/*****************************************************************************/
318		377
…		…
332	void	391	void
333	ev_feed_event (EV_P_ void *w, int revents)	392	ev_feed_event (EV_P_ void *w, int revents)
334	{	393	{
335	W w_ = (W)w;	394	W w_ = (W)w;
336		395
337	if (w_->pending)	396	if (expect_false (w_->pending))
338	{	397	{
339	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;	398	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
340	return;	399	return;
341	}	400	}
342		401
343	w_->pending = ++pendingcnt [ABSPRI (w_)];	402	w_->pending = ++pendingcnt [ABSPRI (w_)];
344	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);
345	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;	404	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
346	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;	405	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
347	}	406	}
348		407
349	static void	408	static void
…		…
357		416
358	inline void	417	inline void
359	fd_event (EV_P_ int fd, int revents)	418	fd_event (EV_P_ int fd, int revents)
360	{	419	{
361	ANFD *anfd = anfds + fd;	420	ANFD *anfd = anfds + fd;
362	struct ev_io *w;	421	ev_io *w;
363		422
364	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)
365	{	424	{
366	int ev = w->events & revents;	425	int ev = w->events & revents;
367		426
368	if (ev)	427	if (ev)
369	ev_feed_event (EV_A_ (W)w, ev);	428	ev_feed_event (EV_A_ (W)w, ev);
…		…
376	fd_event (EV_A_ fd, revents);	435	fd_event (EV_A_ fd, revents);
377	}	436	}
378		437
379	/*****************************************************************************/	438	/*****************************************************************************/
380		439
381	static void	440	inline void
382	fd_reify (EV_P)	441	fd_reify (EV_P)
383	{	442	{
384	int i;	443	int i;
385		444
386	for (i = 0; i < fdchangecnt; ++i)	445	for (i = 0; i < fdchangecnt; ++i)
387	{	446	{
388	int fd = fdchanges [i];	447	int fd = fdchanges [i];
389	ANFD *anfd = anfds + fd;	448	ANFD *anfd = anfds + fd;
390	struct ev_io *w;	449	ev_io *w;
391		450
392	int events = 0;	451	int events = 0;
393		452
394	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)
395	events \|= w->events;	454	events \|= w->events;
396		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
397	anfd->reify = 0;	465	anfd->reify = 0;
398		466
399	method_modify (EV_A_ fd, anfd->events, events);	467	backend_modify (EV_A_ fd, anfd->events, events);
400	anfd->events = events;	468	anfd->events = events;
401	}	469	}
402		470
403	fdchangecnt = 0;	471	fdchangecnt = 0;
404	}	472	}
405		473
406	static void	474	static void
407	fd_change (EV_P_ int fd)	475	fd_change (EV_P_ int fd)
408	{	476	{
409	if (anfds [fd].reify)	477	if (expect_false (anfds [fd].reify))
410	return;	478	return;
411		479
412	anfds [fd].reify = 1;	480	anfds [fd].reify = 1;
413		481
414	++fdchangecnt;	482	++fdchangecnt;
415	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	483	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
416	fdchanges [fdchangecnt - 1] = fd;	484	fdchanges [fdchangecnt - 1] = fd;
417	}	485	}
418		486
419	static void	487	static void
420	fd_kill (EV_P_ int fd)	488	fd_kill (EV_P_ int fd)
421	{	489	{
422	struct ev_io *w;	490	ev_io *w;
423		491
424	while ((w = (struct ev_io *)anfds [fd].head))	492	while ((w = (ev_io *)anfds [fd].head))
425	{	493	{
426	ev_io_stop (EV_A_ w);	494	ev_io_stop (EV_A_ w);
427	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);
428	}	496	}
429	}	497	}
430		498
431	static int	499	inline int
432	fd_valid (int fd)	500	fd_valid (int fd)
433	{	501	{
434	#ifdef WIN32	502	#ifdef _WIN32
435	return !!win32_get_osfhandle (fd);	503	return _get_osfhandle (fd) != -1;
436	#else	504	#else
437	return fcntl (fd, F_GETFD) != -1;	505	return fcntl (fd, F_GETFD) != -1;
438	#endif	506	#endif
439	}	507	}
440		508
…		…
462	fd_kill (EV_A_ fd);	530	fd_kill (EV_A_ fd);
463	return;	531	return;
464	}	532	}
465	}	533	}
466		534
467	/* 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 */
468	static void	536	static void
469	fd_rearm_all (EV_P)	537	fd_rearm_all (EV_P)
470	{	538	{
471	int fd;	539	int fd;
472		540
…		…
521	heap [k] = w;	589	heap [k] = w;
522	((W)heap [k])->active = k + 1;	590	((W)heap [k])->active = k + 1;
523	}	591	}
524		592
525	inline void	593	inline void
526	adjustheap (WT *heap, int N, int k, ev_tstamp at)	594	adjustheap (WT *heap, int N, int k)
527	{	595	{
528	ev_tstamp old_at = heap [k]->at;	596	upheap (heap, k);
529	heap [k]->at = at;
530
531	if (old_at < at)
532	downheap (heap, N, k);	597	downheap (heap, N, k);
533	else
534	upheap (heap, k);
535	}	598	}
536		599
537	/*****************************************************************************/	600	/*****************************************************************************/
538		601
539	typedef struct	602	typedef struct
…		…
545	static ANSIG *signals;	608	static ANSIG *signals;
546	static int signalmax;	609	static int signalmax;
547		610
548	static int sigpipe [2];	611	static int sigpipe [2];
549	static sig_atomic_t volatile gotsig;	612	static sig_atomic_t volatile gotsig;
550	static struct ev_io sigev;	613	static ev_io sigev;
551		614
552	static void	615	static void
553	signals_init (ANSIG *base, int count)	616	signals_init (ANSIG *base, int count)
554	{	617	{
555	while (count--)	618	while (count--)
…		…
562	}	625	}
563		626
564	static void	627	static void
565	sighandler (int signum)	628	sighandler (int signum)
566	{	629	{
567	#if WIN32	630	#if _WIN32
568	signal (signum, sighandler);	631	signal (signum, sighandler);
569	#endif	632	#endif
570		633
571	signals [signum - 1].gotsig = 1;	634	signals [signum - 1].gotsig = 1;
572		635
573	if (!gotsig)	636	if (!gotsig)
574	{	637	{
575	int old_errno = errno;	638	int old_errno = errno;
576	gotsig = 1;	639	gotsig = 1;
577	#ifdef WIN32
578	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
579	#else
580	write (sigpipe [1], &signum, 1);	640	write (sigpipe [1], &signum, 1);
581	#endif
582	errno = old_errno;	641	errno = old_errno;
583	}	642	}
584	}	643	}
585		644
586	void	645	void
587	ev_feed_signal_event (EV_P_ int signum)	646	ev_feed_signal_event (EV_P_ int signum)
588	{	647	{
589	WL w;	648	WL w;
590		649
591	#if EV_MULTIPLICITY	650	#if EV_MULTIPLICITY
592	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));
593	#endif	652	#endif
594		653
595	--signum;	654	--signum;
596		655
597	if (signum < 0 \|\| signum >= signalmax)	656	if (signum < 0 \|\| signum >= signalmax)
…		…
602	for (w = signals [signum].head; w; w = w->next)	661	for (w = signals [signum].head; w; w = w->next)
603	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	662	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
604	}	663	}
605		664
606	static void	665	static void
607	sigcb (EV_P_ struct ev_io *iow, int revents)	666	sigcb (EV_P_ ev_io *iow, int revents)
608	{	667	{
609	int signum;	668	int signum;
610		669
611	#ifdef WIN32
612	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
613	#else
614	read (sigpipe [0], &revents, 1);	670	read (sigpipe [0], &revents, 1);
615	#endif
616	gotsig = 0;	671	gotsig = 0;
617		672
618	for (signum = signalmax; signum--; )	673	for (signum = signalmax; signum--; )
619	if (signals [signum].gotsig)	674	if (signals [signum].gotsig)
620	ev_feed_signal_event (EV_A_ signum + 1);	675	ev_feed_signal_event (EV_A_ signum + 1);
621	}	676	}
622		677
623	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
624	siginit (EV_P)	691	siginit (EV_P)
625	{	692	{
626	#ifndef WIN32	693	fd_intern (sigpipe [0]);
627	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	694	fd_intern (sigpipe [1]);
628	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
629
630	/* rather than sort out wether we really need nb, set it */
631	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
632	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
633	#endif
634		695
635	ev_io_set (&sigev, sigpipe [0], EV_READ);	696	ev_io_set (&sigev, sigpipe [0], EV_READ);
636	ev_io_start (EV_A_ &sigev);	697	ev_io_start (EV_A_ &sigev);
637	ev_unref (EV_A); /* child watcher should not keep loop alive */	698	ev_unref (EV_A); /* child watcher should not keep loop alive */
638	}	699	}
639		700
640	/*****************************************************************************/	701	/*****************************************************************************/
641		702
642	static struct ev_child *childs [PID_HASHSIZE];	703	static ev_child *childs [PID_HASHSIZE];
643		704
644	#ifndef WIN32	705	#ifndef _WIN32
645		706
646	static struct ev_signal childev;	707	static ev_signal childev;
647		708
648	#ifndef WCONTINUED	709	#ifndef WCONTINUED
649	# define WCONTINUED 0	710	# define WCONTINUED 0
650	#endif	711	#endif
651		712
652	static void	713	static void
653	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)
654	{	715	{
655	struct ev_child *w;	716	ev_child *w;
656		717
657	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)
658	if (w->pid == pid \|\| !w->pid)	719	if (w->pid == pid \|\| !w->pid)
659	{	720	{
660	ev_priority (w) = ev_priority (sw); /* need to do it now */	721	ev_priority (w) = ev_priority (sw); /* need to do it now */
661	w->rpid = pid;	722	w->rpid = pid;
662	w->rstatus = status;	723	w->rstatus = status;
663	ev_feed_event (EV_A_ (W)w, EV_CHILD);	724	ev_feed_event (EV_A_ (W)w, EV_CHILD);
664	}	725	}
665	}	726	}
666		727
667	static void	728	static void
668	childcb (EV_P_ struct ev_signal *sw, int revents)	729	childcb (EV_P_ ev_signal *sw, int revents)
669	{	730	{
670	int pid, status;	731	int pid, status;
671		732
672	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	733	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
673	{	734	{
674	/* 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 */
675	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	737	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
676		738
677	child_reap (EV_A_ sw, pid, pid, status);	739	child_reap (EV_A_ sw, pid, pid, status);
678	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 */
679	}	741	}
680	}	742	}
681		743
682	#endif	744	#endif
683		745
684	/*****************************************************************************/	746	/*****************************************************************************/
685		747
		748	#if EV_USE_PORT
		749	# include "ev_port.c"
		750	#endif
686	#if EV_USE_KQUEUE	751	#if EV_USE_KQUEUE
687	# include "ev_kqueue.c"	752	# include "ev_kqueue.c"
688	#endif	753	#endif
689	#if EV_USE_EPOLL	754	#if EV_USE_EPOLL
690	# include "ev_epoll.c"	755	# include "ev_epoll.c"
…		…
710		775
711	/* 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 */
712	static int	777	static int
713	enable_secure (void)	778	enable_secure (void)
714	{	779	{
715	#ifdef WIN32	780	#ifdef _WIN32
716	return 0;	781	return 0;
717	#else	782	#else
718	return getuid () != geteuid ()	783	return getuid () != geteuid ()
719	\|\| getgid () != getegid ();	784	\|\| getgid () != getegid ();
720	#endif	785	#endif
721	}	786	}
722		787
723	int	788	unsigned int
724	ev_method (EV_P)	789	ev_supported_backends (void)
725	{	790	{
726	return method;	791	unsigned int flags = 0;
727	}
728		792
729	static void	793	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
730	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)
731	{	804	{
732	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)
733	{	838	{
734	#if EV_USE_MONOTONIC	839	#if EV_USE_MONOTONIC
735	{	840	{
736	struct timespec ts;	841	struct timespec ts;
737	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	842	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
742	ev_rt_now = ev_time ();	847	ev_rt_now = ev_time ();
743	mn_now = get_clock ();	848	mn_now = get_clock ();
744	now_floor = mn_now;	849	now_floor = mn_now;
745	rtmn_diff = ev_rt_now - mn_now;	850	rtmn_diff = ev_rt_now - mn_now;
746		851
747	if (methods == EVMETHOD_AUTO)	852	if (!(flags & EVFLAG_NOENV)
748	if (!enable_secure () && getenv ("LIBEV_METHODS"))	853	&& !enable_secure ()
		854	&& getenv ("LIBEV_FLAGS"))
749	methods = atoi (getenv ("LIBEV_METHODS"));	855	flags = atoi (getenv ("LIBEV_FLAGS"));
750	else
751	methods = EVMETHOD_ANY;
752		856
753	method = 0;	857	if (!(flags & 0x0000ffffUL))
754	#if EV_USE_WIN32	858	flags \|= ev_recommended_backends ();
755	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);
756	#endif	863	#endif
757	#if EV_USE_KQUEUE	864	#if EV_USE_KQUEUE
758	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	865	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
759	#endif	866	#endif
760	#if EV_USE_EPOLL	867	#if EV_USE_EPOLL
761	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	868	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
762	#endif	869	#endif
763	#if EV_USE_POLL	870	#if EV_USE_POLL
764	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	871	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
765	#endif	872	#endif
766	#if EV_USE_SELECT	873	#if EV_USE_SELECT
767	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	874	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
768	#endif	875	#endif
769		876
770	ev_init (&sigev, sigcb);	877	ev_init (&sigev, sigcb);
771	ev_set_priority (&sigev, EV_MAXPRI);	878	ev_set_priority (&sigev, EV_MAXPRI);
772	}	879	}
773	}	880	}
774		881
775	void	882	static void
776	loop_destroy (EV_P)	883	loop_destroy (EV_P)
777	{	884	{
778	int i;	885	int i;
779		886
780	#if EV_USE_WIN32	887	#if EV_USE_PORT
781	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	888	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
782	#endif	889	#endif
783	#if EV_USE_KQUEUE	890	#if EV_USE_KQUEUE
784	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	891	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
785	#endif	892	#endif
786	#if EV_USE_EPOLL	893	#if EV_USE_EPOLL
787	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	894	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
788	#endif	895	#endif
789	#if EV_USE_POLL	896	#if EV_USE_POLL
790	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	897	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
791	#endif	898	#endif
792	#if EV_USE_SELECT	899	#if EV_USE_SELECT
793	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	900	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
794	#endif	901	#endif
795		902
796	for (i = NUMPRI; i--; )	903	for (i = NUMPRI; i--; )
797	array_free (pending, [i]);	904	array_free (pending, [i]);
798		905
799	/* have to use the microsoft-never-gets-it-right macro */	906	/* have to use the microsoft-never-gets-it-right macro */
800	array_free_microshit (fdchange);	907	array_free (fdchange, EMPTY0);
801	array_free_microshit (timer);	908	array_free (timer, EMPTY0);
802	array_free_microshit (periodic);	909	#if EV_PERIODICS
803	array_free_microshit (idle);	910	array_free (periodic, EMPTY0);
804	array_free_microshit (prepare);	911	#endif
805	array_free_microshit (check);	912	array_free (idle, EMPTY0);
		913	array_free (prepare, EMPTY0);
		914	array_free (check, EMPTY0);
806		915
807	method = 0;	916	backend = 0;
808	}	917	}
809		918
810	static void	919	static void
811	loop_fork (EV_P)	920	loop_fork (EV_P)
812	{	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
813	#if EV_USE_EPOLL	928	#if EV_USE_EPOLL
814	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	929	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
815	#endif
816	#if EV_USE_KQUEUE
817	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
818	#endif	930	#endif
819		931
820	if (ev_is_active (&sigev))	932	if (ev_is_active (&sigev))
821	{	933	{
822	/* default loop */	934	/* default loop */
…		…
835	postfork = 0;	947	postfork = 0;
836	}	948	}
837		949
838	#if EV_MULTIPLICITY	950	#if EV_MULTIPLICITY
839	struct ev_loop *	951	struct ev_loop *
840	ev_loop_new (int methods)	952	ev_loop_new (unsigned int flags)
841	{	953	{
842	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));
843		955
844	memset (loop, 0, sizeof (struct ev_loop));	956	memset (loop, 0, sizeof (struct ev_loop));
845		957
846	loop_init (EV_A_ methods);	958	loop_init (EV_A_ flags);
847		959
848	if (ev_method (EV_A))	960	if (ev_backend (EV_A))
849	return loop;	961	return loop;
850		962
851	return 0;	963	return 0;
852	}	964	}
853		965
…		…
866		978
867	#endif	979	#endif
868		980
869	#if EV_MULTIPLICITY	981	#if EV_MULTIPLICITY
870	struct ev_loop *	982	struct ev_loop *
		983	ev_default_loop_init (unsigned int flags)
871	#else	984	#else
872	int	985	int
		986	ev_default_loop (unsigned int flags)
873	#endif	987	#endif
874	ev_default_loop (int methods)
875	{	988	{
876	if (sigpipe [0] == sigpipe [1])	989	if (sigpipe [0] == sigpipe [1])
877	if (pipe (sigpipe))	990	if (pipe (sigpipe))
878	return 0;	991	return 0;
879		992
880	if (!default_loop)	993	if (!ev_default_loop_ptr)
881	{	994	{
882	#if EV_MULTIPLICITY	995	#if EV_MULTIPLICITY
883	struct ev_loop *loop = default_loop = &default_loop_struct;	996	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
884	#else	997	#else
885	default_loop = 1;	998	ev_default_loop_ptr = 1;
886	#endif	999	#endif
887		1000
888	loop_init (EV_A_ methods);	1001	loop_init (EV_A_ flags);
889		1002
890	if (ev_method (EV_A))	1003	if (ev_backend (EV_A))
891	{	1004	{
892	siginit (EV_A);	1005	siginit (EV_A);
893		1006
894	#ifndef WIN32	1007	#ifndef _WIN32
895	ev_signal_init (&childev, childcb, SIGCHLD);	1008	ev_signal_init (&childev, childcb, SIGCHLD);
896	ev_set_priority (&childev, EV_MAXPRI);	1009	ev_set_priority (&childev, EV_MAXPRI);
897	ev_signal_start (EV_A_ &childev);	1010	ev_signal_start (EV_A_ &childev);
898	ev_unref (EV_A); /* child watcher should not keep loop alive */	1011	ev_unref (EV_A); /* child watcher should not keep loop alive */
899	#endif	1012	#endif
900	}	1013	}
901	else	1014	else
902	default_loop = 0;	1015	ev_default_loop_ptr = 0;
903	}	1016	}
904		1017
905	return default_loop;	1018	return ev_default_loop_ptr;
906	}	1019	}
907		1020
908	void	1021	void
909	ev_default_destroy (void)	1022	ev_default_destroy (void)
910	{	1023	{
911	#if EV_MULTIPLICITY	1024	#if EV_MULTIPLICITY
912	struct ev_loop *loop = default_loop;	1025	struct ev_loop *loop = ev_default_loop_ptr;
913	#endif	1026	#endif
914		1027
915	#ifndef WIN32	1028	#ifndef _WIN32
916	ev_ref (EV_A); /* child watcher */	1029	ev_ref (EV_A); /* child watcher */
917	ev_signal_stop (EV_A_ &childev);	1030	ev_signal_stop (EV_A_ &childev);
918	#endif	1031	#endif
919		1032
920	ev_ref (EV_A); /* signal watcher */	1033	ev_ref (EV_A); /* signal watcher */
…		…
928		1041
929	void	1042	void
930	ev_default_fork (void)	1043	ev_default_fork (void)
931	{	1044	{
932	#if EV_MULTIPLICITY	1045	#if EV_MULTIPLICITY
933	struct ev_loop *loop = default_loop;	1046	struct ev_loop *loop = ev_default_loop_ptr;
934	#endif	1047	#endif
935		1048
936	if (method)	1049	if (backend)
937	postfork = 1;	1050	postfork = 1;
938	}	1051	}
939		1052
940	/*****************************************************************************/	1053	/*****************************************************************************/
941		1054
…		…
949	return 1;	1062	return 1;
950		1063
951	return 0;	1064	return 0;
952	}	1065	}
953		1066
954	static void	1067	inline void
955	call_pending (EV_P)	1068	call_pending (EV_P)
956	{	1069	{
957	int pri;	1070	int pri;
958		1071
959	for (pri = NUMPRI; pri--; )	1072	for (pri = NUMPRI; pri--; )
960	while (pendingcnt [pri])	1073	while (pendingcnt [pri])
961	{	1074	{
962	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1075	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
963		1076
964	if (p->w)	1077	if (expect_true (p->w))
965	{	1078	{
		1079	assert (("non-pending watcher on pending list", p->w->pending));
		1080
966	p->w->pending = 0;	1081	p->w->pending = 0;
967	EV_CB_INVOKE (p->w, p->events);	1082	EV_CB_INVOKE (p->w, p->events);
968	}	1083	}
969	}	1084	}
970	}	1085	}
971		1086
972	static void	1087	inline void
973	timers_reify (EV_P)	1088	timers_reify (EV_P)
974	{	1089	{
975	while (timercnt && ((WT)timers [0])->at <= mn_now)	1090	while (timercnt && ((WT)timers [0])->at <= mn_now)
976	{	1091	{
977	struct ev_timer *w = timers [0];	1092	ev_timer *w = timers [0];
978		1093
979	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1094	assert (("inactive timer on timer heap detected", ev_is_active (w)));
980		1095
981	/* first reschedule or stop timer */	1096	/* first reschedule or stop timer */
982	if (w->repeat)	1097	if (w->repeat)
983	{	1098	{
984	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1099	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1100
985	((WT)w)->at = mn_now + w->repeat;	1101	((WT)w)->at += w->repeat;
		1102	if (((WT)w)->at < mn_now)
		1103	((WT)w)->at = mn_now;
		1104
986	downheap ((WT *)timers, timercnt, 0);	1105	downheap ((WT *)timers, timercnt, 0);
987	}	1106	}
988	else	1107	else
989	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1108	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
990		1109
991	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1110	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
992	}	1111	}
993	}	1112	}
994		1113
995	static void	1114	#if EV_PERIODICS
		1115	inline void
996	periodics_reify (EV_P)	1116	periodics_reify (EV_P)
997	{	1117	{
998	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1118	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
999	{	1119	{
1000	struct ev_periodic *w = periodics [0];	1120	ev_periodic *w = periodics [0];
1001		1121
1002	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1122	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1003		1123
1004	/* first reschedule or stop timer */	1124	/* first reschedule or stop timer */
1005	if (w->reschedule_cb)	1125	if (w->reschedule_cb)
1006	{	1126	{
1007	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);
1008
1009	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));
1010	downheap ((WT *)periodics, periodiccnt, 0);	1129	downheap ((WT *)periodics, periodiccnt, 0);
1011	}	1130	}
1012	else if (w->interval)	1131	else if (w->interval)
1013	{	1132	{
…		…
1028	int i;	1147	int i;
1029		1148
1030	/* adjust periodics after time jump */	1149	/* adjust periodics after time jump */
1031	for (i = 0; i < periodiccnt; ++i)	1150	for (i = 0; i < periodiccnt; ++i)
1032	{	1151	{
1033	struct ev_periodic *w = periodics [i];	1152	ev_periodic *w = periodics [i];
1034		1153
1035	if (w->reschedule_cb)	1154	if (w->reschedule_cb)
1036	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1155	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1037	else if (w->interval)	1156	else if (w->interval)
1038	((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;
…		…
1040		1159
1041	/* now rebuild the heap */	1160	/* now rebuild the heap */
1042	for (i = periodiccnt >> 1; i--; )	1161	for (i = periodiccnt >> 1; i--; )
1043	downheap ((WT *)periodics, periodiccnt, i);	1162	downheap ((WT *)periodics, periodiccnt, i);
1044	}	1163	}
		1164	#endif
1045		1165
1046	inline int	1166	inline int
1047	time_update_monotonic (EV_P)	1167	time_update_monotonic (EV_P)
1048	{	1168	{
1049	mn_now = get_clock ();	1169	mn_now = get_clock ();
…		…
1059	ev_rt_now = ev_time ();	1179	ev_rt_now = ev_time ();
1060	return 1;	1180	return 1;
1061	}	1181	}
1062	}	1182	}
1063		1183
1064	static void	1184	inline void
1065	time_update (EV_P)	1185	time_update (EV_P)
1066	{	1186	{
1067	int i;	1187	int i;
1068		1188
1069	#if EV_USE_MONOTONIC	1189	#if EV_USE_MONOTONIC
…		…
1071	{	1191	{
1072	if (time_update_monotonic (EV_A))	1192	if (time_update_monotonic (EV_A))
1073	{	1193	{
1074	ev_tstamp odiff = rtmn_diff;	1194	ev_tstamp odiff = rtmn_diff;
1075		1195
1076	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; )
1077	{	1205	{
1078	rtmn_diff = ev_rt_now - mn_now;	1206	rtmn_diff = ev_rt_now - mn_now;
1079		1207
1080	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1208	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1081	return; /* all is well */	1209	return; /* all is well */
…		…
1083	ev_rt_now = ev_time ();	1211	ev_rt_now = ev_time ();
1084	mn_now = get_clock ();	1212	mn_now = get_clock ();
1085	now_floor = mn_now;	1213	now_floor = mn_now;
1086	}	1214	}
1087		1215
		1216	# if EV_PERIODICS
1088	periodics_reschedule (EV_A);	1217	periodics_reschedule (EV_A);
		1218	# endif
1089	/* no timer adjustment, as the monotonic clock doesn't jump */	1219	/* no timer adjustment, as the monotonic clock doesn't jump */
1090	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1220	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1091	}	1221	}
1092	}	1222	}
1093	else	1223	else
…		…
1095	{	1225	{
1096	ev_rt_now = ev_time ();	1226	ev_rt_now = ev_time ();
1097		1227
1098	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1228	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1099	{	1229	{
		1230	#if EV_PERIODICS
1100	periodics_reschedule (EV_A);	1231	periodics_reschedule (EV_A);
		1232	#endif
1101		1233
1102	/* adjust timers. this is easy, as the offset is the same for all */	1234	/* adjust timers. this is easy, as the offset is the same for all */
1103	for (i = 0; i < timercnt; ++i)	1235	for (i = 0; i < timercnt; ++i)
1104	((WT)timers [i])->at += ev_rt_now - mn_now;	1236	((WT)timers [i])->at += ev_rt_now - mn_now;
1105	}	1237	}
…		…
1123	static int loop_done;	1255	static int loop_done;
1124		1256
1125	void	1257	void
1126	ev_loop (EV_P_ int flags)	1258	ev_loop (EV_P_ int flags)
1127	{	1259	{
1128	double block;
1129	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1260	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1261	? EVUNLOOP_ONE
		1262	: EVUNLOOP_CANCEL;
1130		1263
1131	do	1264	while (activecnt)
1132	{	1265	{
1133	/* queue check watchers (and execute them) */	1266	/* queue check watchers (and execute them) */
1134	if (expect_false (preparecnt))	1267	if (expect_false (preparecnt))
1135	{	1268	{
1136	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1269	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1143		1276
1144	/* update fd-related kernel structures */	1277	/* update fd-related kernel structures */
1145	fd_reify (EV_A);	1278	fd_reify (EV_A);
1146		1279
1147	/* calculate blocking time */	1280	/* calculate blocking time */
		1281	{
		1282	double block;
1148		1283
1149	/* we only need this for !monotonic clock or timers, but as we basically	1284	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1150	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 */
1151	#if EV_USE_MONOTONIC	1289	#if EV_USE_MONOTONIC
1152	if (expect_true (have_monotonic))	1290	if (expect_true (have_monotonic))
1153	time_update_monotonic (EV_A);	1291	time_update_monotonic (EV_A);
1154	else	1292	else
1155	#endif	1293	#endif
1156	{	1294	{
1157	ev_rt_now = ev_time ();	1295	ev_rt_now = ev_time ();
1158	mn_now = ev_rt_now;	1296	mn_now = ev_rt_now;
1159	}	1297	}
1160		1298
1161	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1162	block = 0.;
1163	else
1164	{
1165	block = MAX_BLOCKTIME;	1299	block = MAX_BLOCKTIME;
1166		1300
1167	if (timercnt)	1301	if (timercnt)
1168	{	1302	{
1169	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1303	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1170	if (block > to) block = to;	1304	if (block > to) block = to;
1171	}	1305	}
1172		1306
		1307	#if EV_PERIODICS
1173	if (periodiccnt)	1308	if (periodiccnt)
1174	{	1309	{
1175	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;
1176	if (block > to) block = to;	1311	if (block > to) block = to;
1177	}	1312	}
		1313	#endif
1178		1314
1179	if (block < 0.) block = 0.;	1315	if (expect_false (block < 0.)) block = 0.;
1180	}	1316	}
1181		1317
1182	method_poll (EV_A_ block);	1318	backend_poll (EV_A_ block);
		1319	}
1183		1320
1184	/* update ev_rt_now, do magic */	1321	/* update ev_rt_now, do magic */
1185	time_update (EV_A);	1322	time_update (EV_A);
1186		1323
1187	/* queue pending timers and reschedule them */	1324	/* queue pending timers and reschedule them */
1188	timers_reify (EV_A); /* relative timers called last */	1325	timers_reify (EV_A); /* relative timers called last */
		1326	#if EV_PERIODICS
1189	periodics_reify (EV_A); /* absolute timers called first */	1327	periodics_reify (EV_A); /* absolute timers called first */
		1328	#endif
1190		1329
1191	/* queue idle watchers unless io or timers are pending */	1330	/* queue idle watchers unless other events are pending */
1192	if (idlecnt && !any_pending (EV_A))	1331	if (idlecnt && !any_pending (EV_A))
1193	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1332	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1194		1333
1195	/* queue check watchers, to be executed first */	1334	/* queue check watchers, to be executed first */
1196	if (checkcnt)	1335	if (expect_false (checkcnt))
1197	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1336	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1198		1337
1199	call_pending (EV_A);	1338	call_pending (EV_A);
1200	}
1201	while (activecnt && !loop_done);
1202		1339
1203	if (loop_done != 2)	1340	if (expect_false (loop_done))
1204	loop_done = 0;	1341	break;
		1342	}
		1343
		1344	if (loop_done == EVUNLOOP_ONE)
		1345	loop_done = EVUNLOOP_CANCEL;
1205	}	1346	}
1206		1347
1207	void	1348	void
1208	ev_unloop (EV_P_ int how)	1349	ev_unloop (EV_P_ int how)
1209	{	1350	{
…		…
1262	}	1403	}
1263		1404
1264	/*****************************************************************************/	1405	/*****************************************************************************/
1265		1406
1266	void	1407	void
1267	ev_io_start (EV_P_ struct ev_io *w)	1408	ev_io_start (EV_P_ ev_io *w)
1268	{	1409	{
1269	int fd = w->fd;	1410	int fd = w->fd;
1270		1411
1271	if (ev_is_active (w))	1412	if (expect_false (ev_is_active (w)))
1272	return;	1413	return;
1273		1414
1274	assert (("ev_io_start called with negative fd", fd >= 0));	1415	assert (("ev_io_start called with negative fd", fd >= 0));
1275		1416
1276	ev_start (EV_A_ (W)w, 1);	1417	ev_start (EV_A_ (W)w, 1);
…		…
1279		1420
1280	fd_change (EV_A_ fd);	1421	fd_change (EV_A_ fd);
1281	}	1422	}
1282		1423
1283	void	1424	void
1284	ev_io_stop (EV_P_ struct ev_io *w)	1425	ev_io_stop (EV_P_ ev_io *w)
1285	{	1426	{
1286	ev_clear_pending (EV_A_ (W)w);	1427	ev_clear_pending (EV_A_ (W)w);
1287	if (!ev_is_active (w))	1428	if (expect_false (!ev_is_active (w)))
1288	return;	1429	return;
		1430
		1431	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1289		1432
1290	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1433	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1291	ev_stop (EV_A_ (W)w);	1434	ev_stop (EV_A_ (W)w);
1292		1435
1293	fd_change (EV_A_ w->fd);	1436	fd_change (EV_A_ w->fd);
1294	}	1437	}
1295		1438
1296	void	1439	void
1297	ev_timer_start (EV_P_ struct ev_timer *w)	1440	ev_timer_start (EV_P_ ev_timer *w)
1298	{	1441	{
1299	if (ev_is_active (w))	1442	if (expect_false (ev_is_active (w)))
1300	return;	1443	return;
1301		1444
1302	((WT)w)->at += mn_now;	1445	((WT)w)->at += mn_now;
1303		1446
1304	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.));
1305		1448
1306	ev_start (EV_A_ (W)w, ++timercnt);	1449	ev_start (EV_A_ (W)w, ++timercnt);
1307	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1450	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1308	timers [timercnt - 1] = w;	1451	timers [timercnt - 1] = w;
1309	upheap ((WT *)timers, timercnt - 1);	1452	upheap ((WT *)timers, timercnt - 1);
1310		1453
1311	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1454	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1312	}	1455	}
1313		1456
1314	void	1457	void
1315	ev_timer_stop (EV_P_ struct ev_timer *w)	1458	ev_timer_stop (EV_P_ ev_timer *w)
1316	{	1459	{
1317	ev_clear_pending (EV_A_ (W)w);	1460	ev_clear_pending (EV_A_ (W)w);
1318	if (!ev_is_active (w))	1461	if (expect_false (!ev_is_active (w)))
1319	return;	1462	return;
1320		1463
1321	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1464	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1322		1465
1323	if (((W)w)->active < timercnt--)	1466	if (expect_true (((W)w)->active < timercnt--))
1324	{	1467	{
1325	timers [((W)w)->active - 1] = timers [timercnt];	1468	timers [((W)w)->active - 1] = timers [timercnt];
1326	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1469	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1327	}	1470	}
1328		1471
1329	((WT)w)->at = w->repeat;	1472	((WT)w)->at -= mn_now;
1330		1473
1331	ev_stop (EV_A_ (W)w);	1474	ev_stop (EV_A_ (W)w);
1332	}	1475	}
1333		1476
1334	void	1477	void
1335	ev_timer_again (EV_P_ struct ev_timer *w)	1478	ev_timer_again (EV_P_ ev_timer *w)
1336	{	1479	{
1337	if (ev_is_active (w))	1480	if (ev_is_active (w))
1338	{	1481	{
1339	if (w->repeat)	1482	if (w->repeat)
		1483	{
		1484	((WT)w)->at = mn_now + w->repeat;
1340	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1485	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
		1486	}
1341	else	1487	else
1342	ev_timer_stop (EV_A_ w);	1488	ev_timer_stop (EV_A_ w);
1343	}	1489	}
1344	else if (w->repeat)	1490	else if (w->repeat)
		1491	{
		1492	w->at = w->repeat;
1345	ev_timer_start (EV_A_ w);	1493	ev_timer_start (EV_A_ w);
		1494	}
1346	}	1495	}
1347		1496
		1497	#if EV_PERIODICS
1348	void	1498	void
1349	ev_periodic_start (EV_P_ struct ev_periodic *w)	1499	ev_periodic_start (EV_P_ ev_periodic *w)
1350	{	1500	{
1351	if (ev_is_active (w))	1501	if (expect_false (ev_is_active (w)))
1352	return;	1502	return;
1353		1503
1354	if (w->reschedule_cb)	1504	if (w->reschedule_cb)
1355	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1505	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1356	else if (w->interval)	1506	else if (w->interval)
…		…
1359	/* 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 */
1360	((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;
1361	}	1511	}
1362		1512
1363	ev_start (EV_A_ (W)w, ++periodiccnt);	1513	ev_start (EV_A_ (W)w, ++periodiccnt);
1364	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1514	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1365	periodics [periodiccnt - 1] = w;	1515	periodics [periodiccnt - 1] = w;
1366	upheap ((WT *)periodics, periodiccnt - 1);	1516	upheap ((WT *)periodics, periodiccnt - 1);
1367		1517
1368	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1518	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1369	}	1519	}
1370		1520
1371	void	1521	void
1372	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1522	ev_periodic_stop (EV_P_ ev_periodic *w)
1373	{	1523	{
1374	ev_clear_pending (EV_A_ (W)w);	1524	ev_clear_pending (EV_A_ (W)w);
1375	if (!ev_is_active (w))	1525	if (expect_false (!ev_is_active (w)))
1376	return;	1526	return;
1377		1527
1378	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1528	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1379		1529
1380	if (((W)w)->active < periodiccnt--)	1530	if (expect_true (((W)w)->active < periodiccnt--))
1381	{	1531	{
1382	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1532	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1383	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1533	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1384	}	1534	}
1385		1535
1386	ev_stop (EV_A_ (W)w);	1536	ev_stop (EV_A_ (W)w);
1387	}	1537	}
1388		1538
1389	void	1539	void
1390	ev_periodic_again (EV_P_ struct ev_periodic *w)	1540	ev_periodic_again (EV_P_ ev_periodic *w)
1391	{	1541	{
1392	/* TODO: use adjustheap and recalculation */	1542	/* TODO: use adjustheap and recalculation */
1393	ev_periodic_stop (EV_A_ w);	1543	ev_periodic_stop (EV_A_ w);
1394	ev_periodic_start (EV_A_ w);	1544	ev_periodic_start (EV_A_ w);
1395	}	1545	}
		1546	#endif
1396		1547
1397	void	1548	void
1398	ev_idle_start (EV_P_ struct ev_idle *w)	1549	ev_idle_start (EV_P_ ev_idle *w)
1399	{	1550	{
1400	if (ev_is_active (w))	1551	if (expect_false (ev_is_active (w)))
1401	return;	1552	return;
1402		1553
1403	ev_start (EV_A_ (W)w, ++idlecnt);	1554	ev_start (EV_A_ (W)w, ++idlecnt);
1404	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));	1555	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1405	idles [idlecnt - 1] = w;	1556	idles [idlecnt - 1] = w;
1406	}	1557	}
1407		1558
1408	void	1559	void
1409	ev_idle_stop (EV_P_ struct ev_idle *w)	1560	ev_idle_stop (EV_P_ ev_idle *w)
1410	{	1561	{
1411	ev_clear_pending (EV_A_ (W)w);	1562	ev_clear_pending (EV_A_ (W)w);
1412	if (ev_is_active (w))	1563	if (expect_false (!ev_is_active (w)))
1413	return;	1564	return;
1414		1565
		1566	{
		1567	int active = ((W)w)->active;
1415	idles [((W)w)->active - 1] = idles [--idlecnt];	1568	idles [active - 1] = idles [--idlecnt];
		1569	((W)idles [active - 1])->active = active;
		1570	}
		1571
1416	ev_stop (EV_A_ (W)w);	1572	ev_stop (EV_A_ (W)w);
1417	}	1573	}
1418		1574
1419	void	1575	void
1420	ev_prepare_start (EV_P_ struct ev_prepare *w)	1576	ev_prepare_start (EV_P_ ev_prepare *w)
1421	{	1577	{
1422	if (ev_is_active (w))	1578	if (expect_false (ev_is_active (w)))
1423	return;	1579	return;
1424		1580
1425	ev_start (EV_A_ (W)w, ++preparecnt);	1581	ev_start (EV_A_ (W)w, ++preparecnt);
1426	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));	1582	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1427	prepares [preparecnt - 1] = w;	1583	prepares [preparecnt - 1] = w;
1428	}	1584	}
1429		1585
1430	void	1586	void
1431	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1587	ev_prepare_stop (EV_P_ ev_prepare *w)
1432	{	1588	{
1433	ev_clear_pending (EV_A_ (W)w);	1589	ev_clear_pending (EV_A_ (W)w);
1434	if (ev_is_active (w))	1590	if (expect_false (!ev_is_active (w)))
1435	return;	1591	return;
1436		1592
		1593	{
		1594	int active = ((W)w)->active;
1437	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1595	prepares [active - 1] = prepares [--preparecnt];
		1596	((W)prepares [active - 1])->active = active;
		1597	}
		1598
1438	ev_stop (EV_A_ (W)w);	1599	ev_stop (EV_A_ (W)w);
1439	}	1600	}
1440		1601
1441	void	1602	void
1442	ev_check_start (EV_P_ struct ev_check *w)	1603	ev_check_start (EV_P_ ev_check *w)
1443	{	1604	{
1444	if (ev_is_active (w))	1605	if (expect_false (ev_is_active (w)))
1445	return;	1606	return;
1446		1607
1447	ev_start (EV_A_ (W)w, ++checkcnt);	1608	ev_start (EV_A_ (W)w, ++checkcnt);
1448	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));	1609	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1449	checks [checkcnt - 1] = w;	1610	checks [checkcnt - 1] = w;
1450	}	1611	}
1451		1612
1452	void	1613	void
1453	ev_check_stop (EV_P_ struct ev_check *w)	1614	ev_check_stop (EV_P_ ev_check *w)
1454	{	1615	{
1455	ev_clear_pending (EV_A_ (W)w);	1616	ev_clear_pending (EV_A_ (W)w);
1456	if (ev_is_active (w))	1617	if (expect_false (!ev_is_active (w)))
1457	return;	1618	return;
1458		1619
		1620	{
		1621	int active = ((W)w)->active;
1459	checks [((W)w)->active - 1] = checks [--checkcnt];	1622	checks [active - 1] = checks [--checkcnt];
		1623	((W)checks [active - 1])->active = active;
		1624	}
		1625
1460	ev_stop (EV_A_ (W)w);	1626	ev_stop (EV_A_ (W)w);
1461	}	1627	}
1462		1628
1463	#ifndef SA_RESTART	1629	#ifndef SA_RESTART
1464	# define SA_RESTART 0	1630	# define SA_RESTART 0
1465	#endif	1631	#endif
1466		1632
1467	void	1633	void
1468	ev_signal_start (EV_P_ struct ev_signal *w)	1634	ev_signal_start (EV_P_ ev_signal *w)
1469	{	1635	{
1470	#if EV_MULTIPLICITY	1636	#if EV_MULTIPLICITY
1471	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));
1472	#endif	1638	#endif
1473	if (ev_is_active (w))	1639	if (expect_false (ev_is_active (w)))
1474	return;	1640	return;
1475		1641
1476	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));
1477		1643
1478	ev_start (EV_A_ (W)w, 1);	1644	ev_start (EV_A_ (W)w, 1);
1479	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1645	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1480	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1646	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1481		1647
1482	if (!((WL)w)->next)	1648	if (!((WL)w)->next)
1483	{	1649	{
1484	#if WIN32	1650	#if _WIN32
1485	signal (w->signum, sighandler);	1651	signal (w->signum, sighandler);
1486	#else	1652	#else
1487	struct sigaction sa;	1653	struct sigaction sa;
1488	sa.sa_handler = sighandler;	1654	sa.sa_handler = sighandler;
1489	sigfillset (&sa.sa_mask);	1655	sigfillset (&sa.sa_mask);
…		…
1492	#endif	1658	#endif
1493	}	1659	}
1494	}	1660	}
1495		1661
1496	void	1662	void
1497	ev_signal_stop (EV_P_ struct ev_signal *w)	1663	ev_signal_stop (EV_P_ ev_signal *w)
1498	{	1664	{
1499	ev_clear_pending (EV_A_ (W)w);	1665	ev_clear_pending (EV_A_ (W)w);
1500	if (!ev_is_active (w))	1666	if (expect_false (!ev_is_active (w)))
1501	return;	1667	return;
1502		1668
1503	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1669	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1504	ev_stop (EV_A_ (W)w);	1670	ev_stop (EV_A_ (W)w);
1505		1671
1506	if (!signals [w->signum - 1].head)	1672	if (!signals [w->signum - 1].head)
1507	signal (w->signum, SIG_DFL);	1673	signal (w->signum, SIG_DFL);
1508	}	1674	}
1509		1675
1510	void	1676	void
1511	ev_child_start (EV_P_ struct ev_child *w)	1677	ev_child_start (EV_P_ ev_child *w)
1512	{	1678	{
1513	#if EV_MULTIPLICITY	1679	#if EV_MULTIPLICITY
1514	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));
1515	#endif	1681	#endif
1516	if (ev_is_active (w))	1682	if (expect_false (ev_is_active (w)))
1517	return;	1683	return;
1518		1684
1519	ev_start (EV_A_ (W)w, 1);	1685	ev_start (EV_A_ (W)w, 1);
1520	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1686	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1521	}	1687	}
1522		1688
1523	void	1689	void
1524	ev_child_stop (EV_P_ struct ev_child *w)	1690	ev_child_stop (EV_P_ ev_child *w)
1525	{	1691	{
1526	ev_clear_pending (EV_A_ (W)w);	1692	ev_clear_pending (EV_A_ (W)w);
1527	if (ev_is_active (w))	1693	if (expect_false (!ev_is_active (w)))
1528	return;	1694	return;
1529		1695
1530	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1696	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1531	ev_stop (EV_A_ (W)w);	1697	ev_stop (EV_A_ (W)w);
1532	}	1698	}
1533		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
1534	/*****************************************************************************/	1747	/*****************************************************************************/
1535		1748
1536	struct ev_once	1749	struct ev_once
1537	{	1750	{
1538	struct ev_io io;	1751	ev_io io;
1539	struct ev_timer to;	1752	ev_timer to;
1540	void (cb)(int revents, void arg);	1753	void (cb)(int revents, void arg);
1541	void *arg;	1754	void *arg;
1542	};	1755	};
1543		1756
1544	static void	1757	static void
…		…
1553		1766
1554	cb (revents, arg);	1767	cb (revents, arg);
1555	}	1768	}
1556		1769
1557	static void	1770	static void
1558	once_cb_io (EV_P_ struct ev_io *w, int revents)	1771	once_cb_io (EV_P_ ev_io *w, int revents)
1559	{	1772	{
1560	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);
1561	}	1774	}
1562		1775
1563	static void	1776	static void
1564	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1777	once_cb_to (EV_P_ ev_timer *w, int revents)
1565	{	1778	{
1566	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);
1567	}	1780	}
1568		1781
1569	void	1782	void
1570	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)
1571	{	1784	{
1572	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));
1573		1786
1574	if (!once)	1787	if (expect_false (!once))
		1788	{
1575	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1789	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1576	else	1790	return;
1577	{	1791	}
		1792
1578	once->cb = cb;	1793	once->cb = cb;
1579	once->arg = arg;	1794	once->arg = arg;
1580		1795
1581	ev_init (&once->io, once_cb_io);	1796	ev_init (&once->io, once_cb_io);
1582	if (fd >= 0)	1797	if (fd >= 0)
1583	{	1798	{
1584	ev_io_set (&once->io, fd, events);	1799	ev_io_set (&once->io, fd, events);
1585	ev_io_start (EV_A_ &once->io);	1800	ev_io_start (EV_A_ &once->io);
1586	}	1801	}
1587		1802
1588	ev_init (&once->to, once_cb_to);	1803	ev_init (&once->to, once_cb_to);
1589	if (timeout >= 0.)	1804	if (timeout >= 0.)
1590	{	1805	{
1591	ev_timer_set (&once->to, timeout, 0.);	1806	ev_timer_set (&once->to, timeout, 0.);
1592	ev_timer_start (EV_A_ &once->to);	1807	ev_timer_start (EV_A_ &once->to);
1593	}
1594	}	1808	}
1595	}	1809	}
1596		1810
		1811	#ifdef __cplusplus
		1812	}
		1813	#endif
		1814

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Comparing libev/ev.c (file contents): Revision 1.85 by root, Sat Nov 10 03:13:50 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 1.85 by root, Sat Nov 10 03:13:50 2007 UTC vs.
Revision 1.139 by root, Sun Nov 25 09:24:37 2007 UTC