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

Comparing libev/ev.c (file contents):
Revision 1.86 by root, Sat Nov 10 03:19:21 2007 UTC vs.
Revision 1.135 by root, Sat Nov 24 06:23:27 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 struct ev_watcher *W;
152	typedef struct ev_watcher_list *WL;	208	typedef struct ev_watcher_list *WL;
153	typedef struct ev_watcher_time *WT;	209	typedef struct 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;
…		…
222	#if EV_MULTIPLICITY	283	#if EV_MULTIPLICITY
223		284
224	struct ev_loop	285	struct ev_loop
225	{	286	{
226	ev_tstamp ev_rt_now;	287	ev_tstamp ev_rt_now;
		288	#define ev_rt_now ((loop)->ev_rt_now)
227	#define VAR(name,decl) decl;	289	#define VAR(name,decl) decl;
228	#include "ev_vars.h"	290	#include "ev_vars.h"
229	#undef VAR	291	#undef VAR
230	};	292	};
231	#include "ev_wrap.h"	293	#include "ev_wrap.h"
232		294
233	struct ev_loop default_loop_struct;	295	static struct ev_loop default_loop_struct;
234	static struct ev_loop *default_loop;	296	struct ev_loop *ev_default_loop_ptr;
235		297
236	#else	298	#else
237		299
238	ev_tstamp ev_rt_now;	300	ev_tstamp ev_rt_now;
239	#define VAR(name,decl) static decl;	301	#define VAR(name,decl) static decl;
240	#include "ev_vars.h"	302	#include "ev_vars.h"
241	#undef VAR	303	#undef VAR
242		304
243	static int default_loop;	305	static int ev_default_loop_ptr;
244		306
245	#endif	307	#endif
246		308
247	/*****************************************************************************/	309	/*****************************************************************************/
248		310
249	inline ev_tstamp	311	ev_tstamp
250	ev_time (void)	312	ev_time (void)
251	{	313	{
252	#if EV_USE_REALTIME	314	#if EV_USE_REALTIME
253	struct timespec ts;	315	struct timespec ts;
254	clock_gettime (CLOCK_REALTIME, &ts);	316	clock_gettime (CLOCK_REALTIME, &ts);
…		…
281	{	343	{
282	return ev_rt_now;	344	return ev_rt_now;
283	}	345	}
284	#endif	346	#endif
285		347
286	#define array_roundsize(type,n) ((n) \| 4 & ~3)	348	#define array_roundsize(type,n) (((n) \| 4) & ~3)
287		349
288	#define array_needsize(type,base,cur,cnt,init) \	350	#define array_needsize(type,base,cur,cnt,init) \
289	if (expect_false ((cnt) > cur)) \	351	if (expect_false ((cnt) > cur)) \
290	{ \	352	{ \
291	int newcnt = cur; \	353	int newcnt = cur; \
…		…
306	stem ## max = array_roundsize (stem ## cnt >> 1); \	368	stem ## max = array_roundsize (stem ## cnt >> 1); \
307	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\	369	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
308	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	370	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
309	}	371	}
310		372
311	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
312	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
313	#define array_free_microshit(stem) \
314	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
315
316	#define array_free(stem, idx) \	373	#define array_free(stem, idx) \
317	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;
318		375
319	/*****************************************************************************/	376	/*****************************************************************************/
320		377
…		…
334	void	391	void
335	ev_feed_event (EV_P_ void *w, int revents)	392	ev_feed_event (EV_P_ void *w, int revents)
336	{	393	{
337	W w_ = (W)w;	394	W w_ = (W)w;
338		395
339	if (w_->pending)	396	if (expect_false (w_->pending))
340	{	397	{
341	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;	398	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
342	return;	399	return;
343	}	400	}
344		401
		402	if (expect_false (!w_->cb))
		403	return;
		404
345	w_->pending = ++pendingcnt [ABSPRI (w_)];	405	w_->pending = ++pendingcnt [ABSPRI (w_)];
346	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);
347	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;	407	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
348	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;	408	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
349	}	409	}
350		410
351	static void	411	static void
…		…
378	fd_event (EV_A_ fd, revents);	438	fd_event (EV_A_ fd, revents);
379	}	439	}
380		440
381	/*****************************************************************************/	441	/*****************************************************************************/
382		442
383	static void	443	inline void
384	fd_reify (EV_P)	444	fd_reify (EV_P)
385	{	445	{
386	int i;	446	int i;
387		447
388	for (i = 0; i < fdchangecnt; ++i)	448	for (i = 0; i < fdchangecnt; ++i)
…		…
394	int events = 0;	454	int events = 0;
395		455
396	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)
397	events \|= w->events;	457	events \|= w->events;
398		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
399	anfd->reify = 0;	468	anfd->reify = 0;
400		469
401	method_modify (EV_A_ fd, anfd->events, events);	470	backend_modify (EV_A_ fd, anfd->events, events);
402	anfd->events = events;	471	anfd->events = events;
403	}	472	}
404		473
405	fdchangecnt = 0;	474	fdchangecnt = 0;
406	}	475	}
407		476
408	static void	477	static void
409	fd_change (EV_P_ int fd)	478	fd_change (EV_P_ int fd)
410	{	479	{
411	if (anfds [fd].reify)	480	if (expect_false (anfds [fd].reify))
412	return;	481	return;
413		482
414	anfds [fd].reify = 1;	483	anfds [fd].reify = 1;
415		484
416	++fdchangecnt;	485	++fdchangecnt;
417	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	486	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
418	fdchanges [fdchangecnt - 1] = fd;	487	fdchanges [fdchangecnt - 1] = fd;
419	}	488	}
420		489
421	static void	490	static void
422	fd_kill (EV_P_ int fd)	491	fd_kill (EV_P_ int fd)
…		…
428	ev_io_stop (EV_A_ w);	497	ev_io_stop (EV_A_ w);
429	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);
430	}	499	}
431	}	500	}
432		501
433	static int	502	inline int
434	fd_valid (int fd)	503	fd_valid (int fd)
435	{	504	{
436	#ifdef WIN32	505	#ifdef _WIN32
437	return !!win32_get_osfhandle (fd);	506	return _get_osfhandle (fd) != -1;
438	#else	507	#else
439	return fcntl (fd, F_GETFD) != -1;	508	return fcntl (fd, F_GETFD) != -1;
440	#endif	509	#endif
441	}	510	}
442		511
…		…
464	fd_kill (EV_A_ fd);	533	fd_kill (EV_A_ fd);
465	return;	534	return;
466	}	535	}
467	}	536	}
468		537
469	/* 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 */
470	static void	539	static void
471	fd_rearm_all (EV_P)	540	fd_rearm_all (EV_P)
472	{	541	{
473	int fd;	542	int fd;
474		543
…		…
523	heap [k] = w;	592	heap [k] = w;
524	((W)heap [k])->active = k + 1;	593	((W)heap [k])->active = k + 1;
525	}	594	}
526		595
527	inline void	596	inline void
528	adjustheap (WT *heap, int N, int k, ev_tstamp at)	597	adjustheap (WT *heap, int N, int k)
529	{	598	{
530	ev_tstamp old_at = heap [k]->at;	599	upheap (heap, k);
531	heap [k]->at = at;
532
533	if (old_at < at)
534	downheap (heap, N, k);	600	downheap (heap, N, k);
535	else
536	upheap (heap, k);
537	}	601	}
538		602
539	/*****************************************************************************/	603	/*****************************************************************************/
540		604
541	typedef struct	605	typedef struct
…		…
564	}	628	}
565		629
566	static void	630	static void
567	sighandler (int signum)	631	sighandler (int signum)
568	{	632	{
569	#if WIN32	633	#if _WIN32
570	signal (signum, sighandler);	634	signal (signum, sighandler);
571	#endif	635	#endif
572		636
573	signals [signum - 1].gotsig = 1;	637	signals [signum - 1].gotsig = 1;
574		638
575	if (!gotsig)	639	if (!gotsig)
576	{	640	{
577	int old_errno = errno;	641	int old_errno = errno;
578	gotsig = 1;	642	gotsig = 1;
579	#ifdef WIN32
580	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
581	#else
582	write (sigpipe [1], &signum, 1);	643	write (sigpipe [1], &signum, 1);
583	#endif
584	errno = old_errno;	644	errno = old_errno;
585	}	645	}
586	}	646	}
587		647
588	void	648	void
589	ev_feed_signal_event (EV_P_ int signum)	649	ev_feed_signal_event (EV_P_ int signum)
590	{	650	{
591	WL w;	651	WL w;
592		652
593	#if EV_MULTIPLICITY	653	#if EV_MULTIPLICITY
594	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));
595	#endif	655	#endif
596		656
597	--signum;	657	--signum;
598		658
599	if (signum < 0 \|\| signum >= signalmax)	659	if (signum < 0 \|\| signum >= signalmax)
…		…
608	static void	668	static void
609	sigcb (EV_P_ struct ev_io *iow, int revents)	669	sigcb (EV_P_ struct ev_io *iow, int revents)
610	{	670	{
611	int signum;	671	int signum;
612		672
613	#ifdef WIN32
614	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
615	#else
616	read (sigpipe [0], &revents, 1);	673	read (sigpipe [0], &revents, 1);
617	#endif
618	gotsig = 0;	674	gotsig = 0;
619		675
620	for (signum = signalmax; signum--; )	676	for (signum = signalmax; signum--; )
621	if (signals [signum].gotsig)	677	if (signals [signum].gotsig)
622	ev_feed_signal_event (EV_A_ signum + 1);	678	ev_feed_signal_event (EV_A_ signum + 1);
623	}	679	}
624		680
625	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
626	siginit (EV_P)	694	siginit (EV_P)
627	{	695	{
628	#ifndef WIN32	696	fd_intern (sigpipe [0]);
629	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	697	fd_intern (sigpipe [1]);
630	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
631
632	/* rather than sort out wether we really need nb, set it */
633	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
634	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
635	#endif
636		698
637	ev_io_set (&sigev, sigpipe [0], EV_READ);	699	ev_io_set (&sigev, sigpipe [0], EV_READ);
638	ev_io_start (EV_A_ &sigev);	700	ev_io_start (EV_A_ &sigev);
639	ev_unref (EV_A); /* child watcher should not keep loop alive */	701	ev_unref (EV_A); /* child watcher should not keep loop alive */
640	}	702	}
641		703
642	/*****************************************************************************/	704	/*****************************************************************************/
643		705
644	static struct ev_child *childs [PID_HASHSIZE];	706	static struct ev_child *childs [PID_HASHSIZE];
645		707
646	#ifndef WIN32	708	#ifndef _WIN32
647		709
648	static struct ev_signal childev;	710	static struct ev_signal childev;
649		711
650	#ifndef WCONTINUED	712	#ifndef WCONTINUED
651	# define WCONTINUED 0	713	# define WCONTINUED 0
…		…
672	int pid, status;	734	int pid, status;
673		735
674	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	736	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
675	{	737	{
676	/* 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 */
677	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	740	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
678		741
679	child_reap (EV_A_ sw, pid, pid, status);	742	child_reap (EV_A_ sw, pid, pid, status);
680	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 */
681	}	744	}
682	}	745	}
683		746
684	#endif	747	#endif
685		748
686	/*****************************************************************************/	749	/*****************************************************************************/
687		750
		751	#if EV_USE_PORT
		752	# include "ev_port.c"
		753	#endif
688	#if EV_USE_KQUEUE	754	#if EV_USE_KQUEUE
689	# include "ev_kqueue.c"	755	# include "ev_kqueue.c"
690	#endif	756	#endif
691	#if EV_USE_EPOLL	757	#if EV_USE_EPOLL
692	# include "ev_epoll.c"	758	# include "ev_epoll.c"
…		…
712		778
713	/* 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 */
714	static int	780	static int
715	enable_secure (void)	781	enable_secure (void)
716	{	782	{
717	#ifdef WIN32	783	#ifdef _WIN32
718	return 0;	784	return 0;
719	#else	785	#else
720	return getuid () != geteuid ()	786	return getuid () != geteuid ()
721	\|\| getgid () != getegid ();	787	\|\| getgid () != getegid ();
722	#endif	788	#endif
723	}	789	}
724		790
725	int	791	unsigned int
726	ev_method (EV_P)	792	ev_supported_backends (void)
727	{	793	{
728	return method;	794	unsigned int flags = 0;
729	}
730		795
731	static void	796	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
732	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)
733	{	807	{
734	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)
735	{	841	{
736	#if EV_USE_MONOTONIC	842	#if EV_USE_MONOTONIC
737	{	843	{
738	struct timespec ts;	844	struct timespec ts;
739	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	845	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
744	ev_rt_now = ev_time ();	850	ev_rt_now = ev_time ();
745	mn_now = get_clock ();	851	mn_now = get_clock ();
746	now_floor = mn_now;	852	now_floor = mn_now;
747	rtmn_diff = ev_rt_now - mn_now;	853	rtmn_diff = ev_rt_now - mn_now;
748		854
749	if (methods == EVMETHOD_AUTO)	855	if (!(flags & EVFLAG_NOENV)
750	if (!enable_secure () && getenv ("LIBEV_METHODS"))	856	&& !enable_secure ()
		857	&& getenv ("LIBEV_FLAGS"))
751	methods = atoi (getenv ("LIBEV_METHODS"));	858	flags = atoi (getenv ("LIBEV_FLAGS"));
752	else
753	methods = EVMETHOD_ANY;
754		859
755	method = 0;	860	if (!(flags & 0x0000ffffUL))
756	#if EV_USE_WIN32	861	flags \|= ev_recommended_backends ();
757	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);
758	#endif	866	#endif
759	#if EV_USE_KQUEUE	867	#if EV_USE_KQUEUE
760	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	868	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
761	#endif	869	#endif
762	#if EV_USE_EPOLL	870	#if EV_USE_EPOLL
763	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	871	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
764	#endif	872	#endif
765	#if EV_USE_POLL	873	#if EV_USE_POLL
766	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	874	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
767	#endif	875	#endif
768	#if EV_USE_SELECT	876	#if EV_USE_SELECT
769	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	877	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
770	#endif	878	#endif
771		879
772	ev_init (&sigev, sigcb);	880	ev_init (&sigev, sigcb);
773	ev_set_priority (&sigev, EV_MAXPRI);	881	ev_set_priority (&sigev, EV_MAXPRI);
774	}	882	}
775	}	883	}
776		884
777	void	885	static void
778	loop_destroy (EV_P)	886	loop_destroy (EV_P)
779	{	887	{
780	int i;	888	int i;
781		889
782	#if EV_USE_WIN32	890	#if EV_USE_PORT
783	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	891	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
784	#endif	892	#endif
785	#if EV_USE_KQUEUE	893	#if EV_USE_KQUEUE
786	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	894	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
787	#endif	895	#endif
788	#if EV_USE_EPOLL	896	#if EV_USE_EPOLL
789	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	897	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
790	#endif	898	#endif
791	#if EV_USE_POLL	899	#if EV_USE_POLL
792	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	900	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
793	#endif	901	#endif
794	#if EV_USE_SELECT	902	#if EV_USE_SELECT
795	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	903	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
796	#endif	904	#endif
797		905
798	for (i = NUMPRI; i--; )	906	for (i = NUMPRI; i--; )
799	array_free (pending, [i]);	907	array_free (pending, [i]);
800		908
801	/* have to use the microsoft-never-gets-it-right macro */	909	/* have to use the microsoft-never-gets-it-right macro */
802	array_free_microshit (fdchange);	910	array_free (fdchange, EMPTY0);
803	array_free_microshit (timer);	911	array_free (timer, EMPTY0);
804	array_free_microshit (periodic);	912	#if EV_PERIODICS
805	array_free_microshit (idle);	913	array_free (periodic, EMPTY0);
806	array_free_microshit (prepare);	914	#endif
807	array_free_microshit (check);	915	array_free (idle, EMPTY0);
		916	array_free (prepare, EMPTY0);
		917	array_free (check, EMPTY0);
808		918
809	method = 0;	919	backend = 0;
810	}	920	}
811		921
812	static void	922	static void
813	loop_fork (EV_P)	923	loop_fork (EV_P)
814	{	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
815	#if EV_USE_EPOLL	931	#if EV_USE_EPOLL
816	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	932	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
817	#endif
818	#if EV_USE_KQUEUE
819	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
820	#endif	933	#endif
821		934
822	if (ev_is_active (&sigev))	935	if (ev_is_active (&sigev))
823	{	936	{
824	/* default loop */	937	/* default loop */
…		…
837	postfork = 0;	950	postfork = 0;
838	}	951	}
839		952
840	#if EV_MULTIPLICITY	953	#if EV_MULTIPLICITY
841	struct ev_loop *	954	struct ev_loop *
842	ev_loop_new (int methods)	955	ev_loop_new (unsigned int flags)
843	{	956	{
844	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));
845		958
846	memset (loop, 0, sizeof (struct ev_loop));	959	memset (loop, 0, sizeof (struct ev_loop));
847		960
848	loop_init (EV_A_ methods);	961	loop_init (EV_A_ flags);
849		962
850	if (ev_method (EV_A))	963	if (ev_backend (EV_A))
851	return loop;	964	return loop;
852		965
853	return 0;	966	return 0;
854	}	967	}
855		968
…		…
868		981
869	#endif	982	#endif
870		983
871	#if EV_MULTIPLICITY	984	#if EV_MULTIPLICITY
872	struct ev_loop *	985	struct ev_loop *
		986	ev_default_loop_init (unsigned int flags)
873	#else	987	#else
874	int	988	int
		989	ev_default_loop (unsigned int flags)
875	#endif	990	#endif
876	ev_default_loop (int methods)
877	{	991	{
878	if (sigpipe [0] == sigpipe [1])	992	if (sigpipe [0] == sigpipe [1])
879	if (pipe (sigpipe))	993	if (pipe (sigpipe))
880	return 0;	994	return 0;
881		995
882	if (!default_loop)	996	if (!ev_default_loop_ptr)
883	{	997	{
884	#if EV_MULTIPLICITY	998	#if EV_MULTIPLICITY
885	struct ev_loop *loop = default_loop = &default_loop_struct;	999	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
886	#else	1000	#else
887	default_loop = 1;	1001	ev_default_loop_ptr = 1;
888	#endif	1002	#endif
889		1003
890	loop_init (EV_A_ methods);	1004	loop_init (EV_A_ flags);
891		1005
892	if (ev_method (EV_A))	1006	if (ev_backend (EV_A))
893	{	1007	{
894	siginit (EV_A);	1008	siginit (EV_A);
895		1009
896	#ifndef WIN32	1010	#ifndef _WIN32
897	ev_signal_init (&childev, childcb, SIGCHLD);	1011	ev_signal_init (&childev, childcb, SIGCHLD);
898	ev_set_priority (&childev, EV_MAXPRI);	1012	ev_set_priority (&childev, EV_MAXPRI);
899	ev_signal_start (EV_A_ &childev);	1013	ev_signal_start (EV_A_ &childev);
900	ev_unref (EV_A); /* child watcher should not keep loop alive */	1014	ev_unref (EV_A); /* child watcher should not keep loop alive */
901	#endif	1015	#endif
902	}	1016	}
903	else	1017	else
904	default_loop = 0;	1018	ev_default_loop_ptr = 0;
905	}	1019	}
906		1020
907	return default_loop;	1021	return ev_default_loop_ptr;
908	}	1022	}
909		1023
910	void	1024	void
911	ev_default_destroy (void)	1025	ev_default_destroy (void)
912	{	1026	{
913	#if EV_MULTIPLICITY	1027	#if EV_MULTIPLICITY
914	struct ev_loop *loop = default_loop;	1028	struct ev_loop *loop = ev_default_loop_ptr;
915	#endif	1029	#endif
916		1030
917	#ifndef WIN32	1031	#ifndef _WIN32
918	ev_ref (EV_A); /* child watcher */	1032	ev_ref (EV_A); /* child watcher */
919	ev_signal_stop (EV_A_ &childev);	1033	ev_signal_stop (EV_A_ &childev);
920	#endif	1034	#endif
921		1035
922	ev_ref (EV_A); /* signal watcher */	1036	ev_ref (EV_A); /* signal watcher */
…		…
930		1044
931	void	1045	void
932	ev_default_fork (void)	1046	ev_default_fork (void)
933	{	1047	{
934	#if EV_MULTIPLICITY	1048	#if EV_MULTIPLICITY
935	struct ev_loop *loop = default_loop;	1049	struct ev_loop *loop = ev_default_loop_ptr;
936	#endif	1050	#endif
937		1051
938	if (method)	1052	if (backend)
939	postfork = 1;	1053	postfork = 1;
940	}	1054	}
941		1055
942	/*****************************************************************************/	1056	/*****************************************************************************/
943		1057
…		…
951	return 1;	1065	return 1;
952		1066
953	return 0;	1067	return 0;
954	}	1068	}
955		1069
956	static void	1070	inline void
957	call_pending (EV_P)	1071	call_pending (EV_P)
958	{	1072	{
959	int pri;	1073	int pri;
960		1074
961	for (pri = NUMPRI; pri--; )	1075	for (pri = NUMPRI; pri--; )
962	while (pendingcnt [pri])	1076	while (pendingcnt [pri])
963	{	1077	{
964	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1078	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
965		1079
966	if (p->w)	1080	if (expect_true (p->w))
967	{	1081	{
968	p->w->pending = 0;	1082	p->w->pending = 0;
969	EV_CB_INVOKE (p->w, p->events);	1083	EV_CB_INVOKE (p->w, p->events);
970	}	1084	}
971	}	1085	}
972	}	1086	}
973		1087
974	static void	1088	inline void
975	timers_reify (EV_P)	1089	timers_reify (EV_P)
976	{	1090	{
977	while (timercnt && ((WT)timers [0])->at <= mn_now)	1091	while (timercnt && ((WT)timers [0])->at <= mn_now)
978	{	1092	{
979	struct ev_timer *w = timers [0];	1093	struct ev_timer *w = timers [0];
…		…
982		1096
983	/* first reschedule or stop timer */	1097	/* first reschedule or stop timer */
984	if (w->repeat)	1098	if (w->repeat)
985	{	1099	{
986	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
987	((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
988	downheap ((WT *)timers, timercnt, 0);	1106	downheap ((WT *)timers, timercnt, 0);
989	}	1107	}
990	else	1108	else
991	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1109	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
992		1110
993	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1111	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
994	}	1112	}
995	}	1113	}
996		1114
997	static void	1115	#if EV_PERIODICS
		1116	inline void
998	periodics_reify (EV_P)	1117	periodics_reify (EV_P)
999	{	1118	{
1000	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1119	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1001	{	1120	{
1002	struct ev_periodic *w = periodics [0];	1121	struct ev_periodic *w = periodics [0];
…		…
1004	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1123	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1005		1124
1006	/* first reschedule or stop timer */	1125	/* first reschedule or stop timer */
1007	if (w->reschedule_cb)	1126	if (w->reschedule_cb)
1008	{	1127	{
1009	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);
1010
1011	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));
1012	downheap ((WT *)periodics, periodiccnt, 0);	1130	downheap ((WT *)periodics, periodiccnt, 0);
1013	}	1131	}
1014	else if (w->interval)	1132	else if (w->interval)
1015	{	1133	{
…		…
1042		1160
1043	/* now rebuild the heap */	1161	/* now rebuild the heap */
1044	for (i = periodiccnt >> 1; i--; )	1162	for (i = periodiccnt >> 1; i--; )
1045	downheap ((WT *)periodics, periodiccnt, i);	1163	downheap ((WT *)periodics, periodiccnt, i);
1046	}	1164	}
		1165	#endif
1047		1166
1048	inline int	1167	inline int
1049	time_update_monotonic (EV_P)	1168	time_update_monotonic (EV_P)
1050	{	1169	{
1051	mn_now = get_clock ();	1170	mn_now = get_clock ();
…		…
1061	ev_rt_now = ev_time ();	1180	ev_rt_now = ev_time ();
1062	return 1;	1181	return 1;
1063	}	1182	}
1064	}	1183	}
1065		1184
1066	static void	1185	inline void
1067	time_update (EV_P)	1186	time_update (EV_P)
1068	{	1187	{
1069	int i;	1188	int i;
1070		1189
1071	#if EV_USE_MONOTONIC	1190	#if EV_USE_MONOTONIC
…		…
1085	ev_rt_now = ev_time ();	1204	ev_rt_now = ev_time ();
1086	mn_now = get_clock ();	1205	mn_now = get_clock ();
1087	now_floor = mn_now;	1206	now_floor = mn_now;
1088	}	1207	}
1089		1208
		1209	# if EV_PERIODICS
1090	periodics_reschedule (EV_A);	1210	periodics_reschedule (EV_A);
		1211	# endif
1091	/* no timer adjustment, as the monotonic clock doesn't jump */	1212	/* no timer adjustment, as the monotonic clock doesn't jump */
1092	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1213	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1093	}	1214	}
1094	}	1215	}
1095	else	1216	else
…		…
1097	{	1218	{
1098	ev_rt_now = ev_time ();	1219	ev_rt_now = ev_time ();
1099		1220
1100	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))
1101	{	1222	{
		1223	#if EV_PERIODICS
1102	periodics_reschedule (EV_A);	1224	periodics_reschedule (EV_A);
		1225	#endif
1103		1226
1104	/* 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 */
1105	for (i = 0; i < timercnt; ++i)	1228	for (i = 0; i < timercnt; ++i)
1106	((WT)timers [i])->at += ev_rt_now - mn_now;	1229	((WT)timers [i])->at += ev_rt_now - mn_now;
1107	}	1230	}
…		…
1125	static int loop_done;	1248	static int loop_done;
1126		1249
1127	void	1250	void
1128	ev_loop (EV_P_ int flags)	1251	ev_loop (EV_P_ int flags)
1129	{	1252	{
1130	double block;
1131	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1253	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1254	? EVUNLOOP_ONE
		1255	: EVUNLOOP_CANCEL;
1132		1256
1133	do	1257	while (activecnt)
1134	{	1258	{
1135	/* queue check watchers (and execute them) */	1259	/* queue check watchers (and execute them) */
1136	if (expect_false (preparecnt))	1260	if (expect_false (preparecnt))
1137	{	1261	{
1138	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1262	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1145		1269
1146	/* update fd-related kernel structures */	1270	/* update fd-related kernel structures */
1147	fd_reify (EV_A);	1271	fd_reify (EV_A);
1148		1272
1149	/* calculate blocking time */	1273	/* calculate blocking time */
		1274	{
		1275	double block;
1150		1276
1151	/* we only need this for !monotonic clock or timers, but as we basically	1277	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1152	always have timers, we just calculate it always */	1278	block = 0.; /* do not block at all */
		1279	else
		1280	{
		1281	/* update time to cancel out callback processing overhead */
1153	#if EV_USE_MONOTONIC	1282	#if EV_USE_MONOTONIC
1154	if (expect_true (have_monotonic))	1283	if (expect_true (have_monotonic))
1155	time_update_monotonic (EV_A);	1284	time_update_monotonic (EV_A);
1156	else	1285	else
1157	#endif	1286	#endif
1158	{	1287	{
1159	ev_rt_now = ev_time ();	1288	ev_rt_now = ev_time ();
1160	mn_now = ev_rt_now;	1289	mn_now = ev_rt_now;
1161	}	1290	}
1162		1291
1163	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1164	block = 0.;
1165	else
1166	{
1167	block = MAX_BLOCKTIME;	1292	block = MAX_BLOCKTIME;
1168		1293
1169	if (timercnt)	1294	if (timercnt)
1170	{	1295	{
1171	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1296	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1172	if (block > to) block = to;	1297	if (block > to) block = to;
1173	}	1298	}
1174		1299
		1300	#if EV_PERIODICS
1175	if (periodiccnt)	1301	if (periodiccnt)
1176	{	1302	{
1177	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1303	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1178	if (block > to) block = to;	1304	if (block > to) block = to;
1179	}	1305	}
		1306	#endif
1180		1307
1181	if (block < 0.) block = 0.;	1308	if (expect_false (block < 0.)) block = 0.;
1182	}	1309	}
1183		1310
1184	method_poll (EV_A_ block);	1311	backend_poll (EV_A_ block);
		1312	}
1185		1313
1186	/* update ev_rt_now, do magic */	1314	/* update ev_rt_now, do magic */
1187	time_update (EV_A);	1315	time_update (EV_A);
1188		1316
1189	/* queue pending timers and reschedule them */	1317	/* queue pending timers and reschedule them */
1190	timers_reify (EV_A); /* relative timers called last */	1318	timers_reify (EV_A); /* relative timers called last */
		1319	#if EV_PERIODICS
1191	periodics_reify (EV_A); /* absolute timers called first */	1320	periodics_reify (EV_A); /* absolute timers called first */
		1321	#endif
1192		1322
1193	/* queue idle watchers unless io or timers are pending */	1323	/* queue idle watchers unless io or timers are pending */
1194	if (idlecnt && !any_pending (EV_A))	1324	if (idlecnt && !any_pending (EV_A))
1195	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1325	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1196		1326
1197	/* queue check watchers, to be executed first */	1327	/* queue check watchers, to be executed first */
1198	if (checkcnt)	1328	if (expect_false (checkcnt))
1199	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1329	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1200		1330
1201	call_pending (EV_A);	1331	call_pending (EV_A);
1202	}
1203	while (activecnt && !loop_done);
1204		1332
1205	if (loop_done != 2)	1333	if (expect_false (loop_done))
1206	loop_done = 0;	1334	break;
		1335	}
		1336
		1337	if (loop_done == EVUNLOOP_ONE)
		1338	loop_done = EVUNLOOP_CANCEL;
1207	}	1339	}
1208		1340
1209	void	1341	void
1210	ev_unloop (EV_P_ int how)	1342	ev_unloop (EV_P_ int how)
1211	{	1343	{
…		…
1268	void	1400	void
1269	ev_io_start (EV_P_ struct ev_io *w)	1401	ev_io_start (EV_P_ struct ev_io *w)
1270	{	1402	{
1271	int fd = w->fd;	1403	int fd = w->fd;
1272		1404
1273	if (ev_is_active (w))	1405	if (expect_false (ev_is_active (w)))
1274	return;	1406	return;
1275		1407
1276	assert (("ev_io_start called with negative fd", fd >= 0));	1408	assert (("ev_io_start called with negative fd", fd >= 0));
1277		1409
1278	ev_start (EV_A_ (W)w, 1);	1410	ev_start (EV_A_ (W)w, 1);
…		…
1284		1416
1285	void	1417	void
1286	ev_io_stop (EV_P_ struct ev_io *w)	1418	ev_io_stop (EV_P_ struct ev_io *w)
1287	{	1419	{
1288	ev_clear_pending (EV_A_ (W)w);	1420	ev_clear_pending (EV_A_ (W)w);
1289	if (!ev_is_active (w))	1421	if (expect_false (!ev_is_active (w)))
1290	return;	1422	return;
		1423
		1424	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1291		1425
1292	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1426	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1293	ev_stop (EV_A_ (W)w);	1427	ev_stop (EV_A_ (W)w);
1294		1428
1295	fd_change (EV_A_ w->fd);	1429	fd_change (EV_A_ w->fd);
1296	}	1430	}
1297		1431
1298	void	1432	void
1299	ev_timer_start (EV_P_ struct ev_timer *w)	1433	ev_timer_start (EV_P_ struct ev_timer *w)
1300	{	1434	{
1301	if (ev_is_active (w))	1435	if (expect_false (ev_is_active (w)))
1302	return;	1436	return;
1303		1437
1304	((WT)w)->at += mn_now;	1438	((WT)w)->at += mn_now;
1305		1439
1306	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1440	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1307		1441
1308	ev_start (EV_A_ (W)w, ++timercnt);	1442	ev_start (EV_A_ (W)w, ++timercnt);
1309	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1443	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1310	timers [timercnt - 1] = w;	1444	timers [timercnt - 1] = w;
1311	upheap ((WT *)timers, timercnt - 1);	1445	upheap ((WT *)timers, timercnt - 1);
1312		1446
1313	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1447	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1314	}	1448	}
1315		1449
1316	void	1450	void
1317	ev_timer_stop (EV_P_ struct ev_timer *w)	1451	ev_timer_stop (EV_P_ struct ev_timer *w)
1318	{	1452	{
1319	ev_clear_pending (EV_A_ (W)w);	1453	ev_clear_pending (EV_A_ (W)w);
1320	if (!ev_is_active (w))	1454	if (expect_false (!ev_is_active (w)))
1321	return;	1455	return;
1322		1456
1323	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1457	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1324		1458
1325	if (((W)w)->active < timercnt--)	1459	if (expect_true (((W)w)->active < timercnt--))
1326	{	1460	{
1327	timers [((W)w)->active - 1] = timers [timercnt];	1461	timers [((W)w)->active - 1] = timers [timercnt];
1328	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1462	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1329	}	1463	}
1330		1464
1331	((WT)w)->at = w->repeat;	1465	((WT)w)->at -= mn_now;
1332		1466
1333	ev_stop (EV_A_ (W)w);	1467	ev_stop (EV_A_ (W)w);
1334	}	1468	}
1335		1469
1336	void	1470	void
1337	ev_timer_again (EV_P_ struct ev_timer *w)	1471	ev_timer_again (EV_P_ struct ev_timer *w)
1338	{	1472	{
1339	if (ev_is_active (w))	1473	if (ev_is_active (w))
1340	{	1474	{
1341	if (w->repeat)	1475	if (w->repeat)
		1476	{
		1477	((WT)w)->at = mn_now + w->repeat;
1342	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1478	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
		1479	}
1343	else	1480	else
1344	ev_timer_stop (EV_A_ w);	1481	ev_timer_stop (EV_A_ w);
1345	}	1482	}
1346	else if (w->repeat)	1483	else if (w->repeat)
		1484	{
		1485	w->at = w->repeat;
1347	ev_timer_start (EV_A_ w);	1486	ev_timer_start (EV_A_ w);
		1487	}
1348	}	1488	}
1349		1489
		1490	#if EV_PERIODICS
1350	void	1491	void
1351	ev_periodic_start (EV_P_ struct ev_periodic *w)	1492	ev_periodic_start (EV_P_ struct ev_periodic *w)
1352	{	1493	{
1353	if (ev_is_active (w))	1494	if (expect_false (ev_is_active (w)))
1354	return;	1495	return;
1355		1496
1356	if (w->reschedule_cb)	1497	if (w->reschedule_cb)
1357	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1498	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1358	else if (w->interval)	1499	else if (w->interval)
…		…
1361	/* this formula differs from the one in periodic_reify because we do not always round up */	1502	/* this formula differs from the one in periodic_reify because we do not always round up */
1362	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1503	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1363	}	1504	}
1364		1505
1365	ev_start (EV_A_ (W)w, ++periodiccnt);	1506	ev_start (EV_A_ (W)w, ++periodiccnt);
1366	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1507	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1367	periodics [periodiccnt - 1] = w;	1508	periodics [periodiccnt - 1] = w;
1368	upheap ((WT *)periodics, periodiccnt - 1);	1509	upheap ((WT *)periodics, periodiccnt - 1);
1369		1510
1370	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1511	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1371	}	1512	}
1372		1513
1373	void	1514	void
1374	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1515	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1375	{	1516	{
1376	ev_clear_pending (EV_A_ (W)w);	1517	ev_clear_pending (EV_A_ (W)w);
1377	if (!ev_is_active (w))	1518	if (expect_false (!ev_is_active (w)))
1378	return;	1519	return;
1379		1520
1380	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1521	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1381		1522
1382	if (((W)w)->active < periodiccnt--)	1523	if (expect_true (((W)w)->active < periodiccnt--))
1383	{	1524	{
1384	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1525	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1385	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1526	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1386	}	1527	}
1387		1528
1388	ev_stop (EV_A_ (W)w);	1529	ev_stop (EV_A_ (W)w);
1389	}	1530	}
1390		1531
…		…
1393	{	1534	{
1394	/* TODO: use adjustheap and recalculation */	1535	/* TODO: use adjustheap and recalculation */
1395	ev_periodic_stop (EV_A_ w);	1536	ev_periodic_stop (EV_A_ w);
1396	ev_periodic_start (EV_A_ w);	1537	ev_periodic_start (EV_A_ w);
1397	}	1538	}
		1539	#endif
1398		1540
1399	void	1541	void
1400	ev_idle_start (EV_P_ struct ev_idle *w)	1542	ev_idle_start (EV_P_ struct ev_idle *w)
1401	{	1543	{
1402	if (ev_is_active (w))	1544	if (expect_false (ev_is_active (w)))
1403	return;	1545	return;
1404		1546
1405	ev_start (EV_A_ (W)w, ++idlecnt);	1547	ev_start (EV_A_ (W)w, ++idlecnt);
1406	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));	1548	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1407	idles [idlecnt - 1] = w;	1549	idles [idlecnt - 1] = w;
1408	}	1550	}
1409		1551
1410	void	1552	void
1411	ev_idle_stop (EV_P_ struct ev_idle *w)	1553	ev_idle_stop (EV_P_ struct ev_idle *w)
1412	{	1554	{
1413	ev_clear_pending (EV_A_ (W)w);	1555	ev_clear_pending (EV_A_ (W)w);
1414	if (ev_is_active (w))	1556	if (expect_false (!ev_is_active (w)))
1415	return;	1557	return;
1416		1558
1417	idles [((W)w)->active - 1] = idles [--idlecnt];	1559	idles [((W)w)->active - 1] = idles [--idlecnt];
1418	ev_stop (EV_A_ (W)w);	1560	ev_stop (EV_A_ (W)w);
1419	}	1561	}
1420		1562
1421	void	1563	void
1422	ev_prepare_start (EV_P_ struct ev_prepare *w)	1564	ev_prepare_start (EV_P_ struct ev_prepare *w)
1423	{	1565	{
1424	if (ev_is_active (w))	1566	if (expect_false (ev_is_active (w)))
1425	return;	1567	return;
1426		1568
1427	ev_start (EV_A_ (W)w, ++preparecnt);	1569	ev_start (EV_A_ (W)w, ++preparecnt);
1428	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));	1570	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1429	prepares [preparecnt - 1] = w;	1571	prepares [preparecnt - 1] = w;
1430	}	1572	}
1431		1573
1432	void	1574	void
1433	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1575	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1434	{	1576	{
1435	ev_clear_pending (EV_A_ (W)w);	1577	ev_clear_pending (EV_A_ (W)w);
1436	if (ev_is_active (w))	1578	if (expect_false (!ev_is_active (w)))
1437	return;	1579	return;
1438		1580
1439	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1581	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1440	ev_stop (EV_A_ (W)w);	1582	ev_stop (EV_A_ (W)w);
1441	}	1583	}
1442		1584
1443	void	1585	void
1444	ev_check_start (EV_P_ struct ev_check *w)	1586	ev_check_start (EV_P_ struct ev_check *w)
1445	{	1587	{
1446	if (ev_is_active (w))	1588	if (expect_false (ev_is_active (w)))
1447	return;	1589	return;
1448		1590
1449	ev_start (EV_A_ (W)w, ++checkcnt);	1591	ev_start (EV_A_ (W)w, ++checkcnt);
1450	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));	1592	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1451	checks [checkcnt - 1] = w;	1593	checks [checkcnt - 1] = w;
1452	}	1594	}
1453		1595
1454	void	1596	void
1455	ev_check_stop (EV_P_ struct ev_check *w)	1597	ev_check_stop (EV_P_ struct ev_check *w)
1456	{	1598	{
1457	ev_clear_pending (EV_A_ (W)w);	1599	ev_clear_pending (EV_A_ (W)w);
1458	if (ev_is_active (w))	1600	if (expect_false (!ev_is_active (w)))
1459	return;	1601	return;
1460		1602
1461	checks [((W)w)->active - 1] = checks [--checkcnt];	1603	checks [((W)w)->active - 1] = checks [--checkcnt];
1462	ev_stop (EV_A_ (W)w);	1604	ev_stop (EV_A_ (W)w);
1463	}	1605	}
…		…
1468		1610
1469	void	1611	void
1470	ev_signal_start (EV_P_ struct ev_signal *w)	1612	ev_signal_start (EV_P_ struct ev_signal *w)
1471	{	1613	{
1472	#if EV_MULTIPLICITY	1614	#if EV_MULTIPLICITY
1473	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1615	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1474	#endif	1616	#endif
1475	if (ev_is_active (w))	1617	if (expect_false (ev_is_active (w)))
1476	return;	1618	return;
1477		1619
1478	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1620	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1479		1621
1480	ev_start (EV_A_ (W)w, 1);	1622	ev_start (EV_A_ (W)w, 1);
1481	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1623	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1482	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1624	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1483		1625
1484	if (!((WL)w)->next)	1626	if (!((WL)w)->next)
1485	{	1627	{
1486	#if WIN32	1628	#if _WIN32
1487	signal (w->signum, sighandler);	1629	signal (w->signum, sighandler);
1488	#else	1630	#else
1489	struct sigaction sa;	1631	struct sigaction sa;
1490	sa.sa_handler = sighandler;	1632	sa.sa_handler = sighandler;
1491	sigfillset (&sa.sa_mask);	1633	sigfillset (&sa.sa_mask);
…		…
1497		1639
1498	void	1640	void
1499	ev_signal_stop (EV_P_ struct ev_signal *w)	1641	ev_signal_stop (EV_P_ struct ev_signal *w)
1500	{	1642	{
1501	ev_clear_pending (EV_A_ (W)w);	1643	ev_clear_pending (EV_A_ (W)w);
1502	if (!ev_is_active (w))	1644	if (expect_false (!ev_is_active (w)))
1503	return;	1645	return;
1504		1646
1505	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1647	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1506	ev_stop (EV_A_ (W)w);	1648	ev_stop (EV_A_ (W)w);
1507		1649
…		…
1511		1653
1512	void	1654	void
1513	ev_child_start (EV_P_ struct ev_child *w)	1655	ev_child_start (EV_P_ struct ev_child *w)
1514	{	1656	{
1515	#if EV_MULTIPLICITY	1657	#if EV_MULTIPLICITY
1516	assert (("child watchers are only supported in the default loop", loop == default_loop));	1658	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1517	#endif	1659	#endif
1518	if (ev_is_active (w))	1660	if (expect_false (ev_is_active (w)))
1519	return;	1661	return;
1520		1662
1521	ev_start (EV_A_ (W)w, 1);	1663	ev_start (EV_A_ (W)w, 1);
1522	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1664	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1523	}	1665	}
1524		1666
1525	void	1667	void
1526	ev_child_stop (EV_P_ struct ev_child *w)	1668	ev_child_stop (EV_P_ struct ev_child *w)
1527	{	1669	{
1528	ev_clear_pending (EV_A_ (W)w);	1670	ev_clear_pending (EV_A_ (W)w);
1529	if (ev_is_active (w))	1671	if (expect_false (!ev_is_active (w)))
1530	return;	1672	return;
1531		1673
1532	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1674	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1533	ev_stop (EV_A_ (W)w);	1675	ev_stop (EV_A_ (W)w);
1534	}	1676	}
		1677
		1678	#if EV_MULTIPLICITY
		1679	static void
		1680	embed_cb (EV_P_ struct ev_io *io, int revents)
		1681	{
		1682	struct ev_embed w = (struct ev_embed )(((char *)io) - offsetof (struct ev_embed, io));
		1683
		1684	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1685	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1686	}
		1687
		1688	void
		1689	ev_embed_start (EV_P_ struct ev_embed *w)
		1690	{
		1691	if (expect_false (ev_is_active (w)))
		1692	return;
		1693
		1694	{
		1695	struct ev_loop *loop = w->loop;
		1696	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1697	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1698	}
		1699
		1700	ev_io_start (EV_A_ &w->io);
		1701	ev_start (EV_A_ (W)w, 1);
		1702	}
		1703
		1704	void
		1705	ev_embed_stop (EV_P_ struct ev_embed *w)
		1706	{
		1707	ev_clear_pending (EV_A_ (W)w);
		1708	if (expect_false (!ev_is_active (w)))
		1709	return;
		1710
		1711	ev_io_stop (EV_A_ &w->io);
		1712	ev_stop (EV_A_ (W)w);
		1713	}
		1714	#endif
1535		1715
1536	/*****************************************************************************/	1716	/*****************************************************************************/
1537		1717
1538	struct ev_once	1718	struct ev_once
1539	{	1719	{
…		…
1571	void	1751	void
1572	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1752	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1573	{	1753	{
1574	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));	1754	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1575		1755
1576	if (!once)	1756	if (expect_false (!once))
		1757	{
1577	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1758	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1578	else	1759	return;
1579	{	1760	}
		1761
1580	once->cb = cb;	1762	once->cb = cb;
1581	once->arg = arg;	1763	once->arg = arg;
1582		1764
1583	ev_init (&once->io, once_cb_io);	1765	ev_init (&once->io, once_cb_io);
1584	if (fd >= 0)	1766	if (fd >= 0)
1585	{	1767	{
1586	ev_io_set (&once->io, fd, events);	1768	ev_io_set (&once->io, fd, events);
1587	ev_io_start (EV_A_ &once->io);	1769	ev_io_start (EV_A_ &once->io);
1588	}	1770	}
1589		1771
1590	ev_init (&once->to, once_cb_to);	1772	ev_init (&once->to, once_cb_to);
1591	if (timeout >= 0.)	1773	if (timeout >= 0.)
1592	{	1774	{
1593	ev_timer_set (&once->to, timeout, 0.);	1775	ev_timer_set (&once->to, timeout, 0.);
1594	ev_timer_start (EV_A_ &once->to);	1776	ev_timer_start (EV_A_ &once->to);
1595	}
1596	}	1777	}
1597	}	1778	}
1598		1779
		1780	#ifdef __cplusplus
		1781	}
		1782	#endif
		1783

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Comparing libev/ev.c (file contents): Revision 1.86 by root, Sat Nov 10 03:19:21 2007 UTC vs. Revision 1.135 by root, Sat Nov 24 06:23:27 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.86 by root, Sat Nov 10 03:19:21 2007 UTC vs.
Revision 1.135 by root, Sat Nov 24 06:23:27 2007 UTC