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

Comparing libev/ev.c (file contents):
Revision 1.84 by root, Fri Nov 9 23:04:35 2007 UTC vs.
Revision 1.129 by root, Fri Nov 23 05:00:44 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
32	# include "config.h"	37	# include "config.h"
33		38
34	# if HAVE_CLOCK_GETTIME	39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	44	# define EV_USE_REALTIME 1
		45	# endif
		46	# else
		47	# ifndef EV_USE_MONOTONIC
		48	# define EV_USE_MONOTONIC 0
		49	# endif
		50	# ifndef EV_USE_REALTIME
		51	# define EV_USE_REALTIME 0
		52	# endif
37	# endif	53	# endif
38		54
		55	# ifndef EV_USE_SELECT
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	56	# if HAVE_SELECT && HAVE_SYS_SELECT_H
40	# define EV_USE_SELECT 1	57	# define EV_USE_SELECT 1
		58	# else
		59	# define EV_USE_SELECT 0
		60	# endif
41	# endif	61	# endif
42		62
		63	# ifndef EV_USE_POLL
43	# if HAVE_POLL && HAVE_POLL_H	64	# if HAVE_POLL && HAVE_POLL_H
44	# define EV_USE_POLL 1	65	# define EV_USE_POLL 1
		66	# else
		67	# define EV_USE_POLL 0
		68	# endif
45	# endif	69	# endif
46		70
		71	# ifndef EV_USE_EPOLL
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	72	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48	# define EV_USE_EPOLL 1	73	# define EV_USE_EPOLL 1
		74	# else
		75	# define EV_USE_EPOLL 0
		76	# endif
49	# endif	77	# endif
50		78
		79	# ifndef EV_USE_KQUEUE
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	80	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# define EV_USE_KQUEUE 1	81	# define EV_USE_KQUEUE 1
		82	# else
		83	# define EV_USE_KQUEUE 0
		84	# endif
		85	# endif
		86
		87	# ifndef EV_USE_PORT
		88	# if HAVE_PORT_H && HAVE_PORT_CREATE
		89	# define EV_USE_PORT 1
		90	# else
		91	# define EV_USE_PORT 0
		92	# endif
53	# endif	93	# endif
54		94
55	#endif	95	#endif
56		96
57	#include <math.h>	97	#include <math.h>
…		…
66	#include <sys/types.h>	106	#include <sys/types.h>
67	#include <time.h>	107	#include <time.h>
68		108
69	#include <signal.h>	109	#include <signal.h>
70		110
71	#ifndef WIN32	111	#ifndef _WIN32
72	# include <unistd.h>	112	# include <unistd.h>
73	# include <sys/time.h>	113	# include <sys/time.h>
74	# include <sys/wait.h>	114	# include <sys/wait.h>
		115	#else
		116	# define WIN32_LEAN_AND_MEAN
		117	# include <windows.h>
		118	# ifndef EV_SELECT_IS_WINSOCKET
		119	# define EV_SELECT_IS_WINSOCKET 1
75	#endif	120	# endif
		121	#endif
		122
76	/**/	123	/**/
77		124
78	#ifndef EV_USE_MONOTONIC	125	#ifndef EV_USE_MONOTONIC
79	# define EV_USE_MONOTONIC 1	126	# define EV_USE_MONOTONIC 0
		127	#endif
		128
		129	#ifndef EV_USE_REALTIME
		130	# define EV_USE_REALTIME 0
80	#endif	131	#endif
81		132
82	#ifndef EV_USE_SELECT	133	#ifndef EV_USE_SELECT
83	# define EV_USE_SELECT 1	134	# define EV_USE_SELECT 1
84	#endif	135	#endif
85		136
86	#ifndef EV_USE_POLL	137	#ifndef EV_USE_POLL
87	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	138	# ifdef _WIN32
		139	# define EV_USE_POLL 0
		140	# else
		141	# define EV_USE_POLL 1
		142	# endif
88	#endif	143	#endif
89		144
90	#ifndef EV_USE_EPOLL	145	#ifndef EV_USE_EPOLL
91	# define EV_USE_EPOLL 0	146	# define EV_USE_EPOLL 0
92	#endif	147	#endif
93		148
94	#ifndef EV_USE_KQUEUE	149	#ifndef EV_USE_KQUEUE
95	# define EV_USE_KQUEUE 0	150	# define EV_USE_KQUEUE 0
96	#endif	151	#endif
97		152
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	153	#ifndef EV_USE_PORT
109	# define EV_USE_REALTIME 1	154	# define EV_USE_PORT 0
110	#endif	155	#endif
111		156
112	/**/	157	/**/
113		158
114	#ifndef CLOCK_MONOTONIC	159	#ifndef CLOCK_MONOTONIC
…		…
119	#ifndef CLOCK_REALTIME	164	#ifndef CLOCK_REALTIME
120	# undef EV_USE_REALTIME	165	# undef EV_USE_REALTIME
121	# define EV_USE_REALTIME 0	166	# define EV_USE_REALTIME 0
122	#endif	167	#endif
123		168
		169	#if EV_SELECT_IS_WINSOCKET
		170	# include <winsock.h>
		171	#endif
		172
124	/**/	173	/**/
125		174
126	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	175	#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) */	176	#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 */	177	#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 */	178	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
130		179
131	#ifdef EV_H	180	#ifdef EV_H
132	# include EV_H	181	# include EV_H
133	#else	182	#else
134	# include "ev.h"	183	# include "ev.h"
135	#endif	184	#endif
136		185
137	#if __GNUC__ >= 3	186	#if __GNUC__ >= 3
138	# define expect(expr,value) __builtin_expect ((expr),(value))	187	# define expect(expr,value) __builtin_expect ((expr),(value))
139	# define inline inline	188	# define inline static inline
140	#else	189	#else
141	# define expect(expr,value) (expr)	190	# define expect(expr,value) (expr)
142	# define inline static	191	# define inline static
143	#endif	192	#endif
144		193
…		…
146	#define expect_true(expr) expect ((expr) != 0, 1)	195	#define expect_true(expr) expect ((expr) != 0, 1)
147		196
148	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	197	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
149	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	198	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
150		199
		200	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		201	#define EMPTY2(a,b) /* used to suppress some warnings */
		202
151	typedef struct ev_watcher *W;	203	typedef struct ev_watcher *W;
152	typedef struct ev_watcher_list *WL;	204	typedef struct ev_watcher_list *WL;
153	typedef struct ev_watcher_time *WT;	205	typedef struct ev_watcher_time *WT;
154		206
155	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	207	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
156		208
		209	#ifdef _WIN32
157	#include "ev_win32.c"	210	# include "ev_win32.c"
		211	#endif
158		212
159	/*****************************************************************************/	213	/*****************************************************************************/
160		214
161	static void (syserr_cb)(const char msg);	215	static void (syserr_cb)(const char msg);
162		216
…		…
209	typedef struct	263	typedef struct
210	{	264	{
211	WL head;	265	WL head;
212	unsigned char events;	266	unsigned char events;
213	unsigned char reify;	267	unsigned char reify;
		268	#if EV_SELECT_IS_WINSOCKET
		269	SOCKET handle;
		270	#endif
214	} ANFD;	271	} ANFD;
215		272
216	typedef struct	273	typedef struct
217	{	274	{
218	W w;	275	W w;
…		…
221		278
222	#if EV_MULTIPLICITY	279	#if EV_MULTIPLICITY
223		280
224	struct ev_loop	281	struct ev_loop
225	{	282	{
		283	ev_tstamp ev_rt_now;
		284	#define ev_rt_now ((loop)->ev_rt_now)
226	#define VAR(name,decl) decl;	285	#define VAR(name,decl) decl;
227	#include "ev_vars.h"	286	#include "ev_vars.h"
228	#undef VAR	287	#undef VAR
229	};	288	};
230	#include "ev_wrap.h"	289	#include "ev_wrap.h"
231		290
232	struct ev_loop default_loop_struct;	291	static struct ev_loop default_loop_struct;
233	static struct ev_loop *default_loop;	292	struct ev_loop *ev_default_loop_ptr;
234		293
235	#else	294	#else
236		295
		296	ev_tstamp ev_rt_now;
237	#define VAR(name,decl) static decl;	297	#define VAR(name,decl) static decl;
238	#include "ev_vars.h"	298	#include "ev_vars.h"
239	#undef VAR	299	#undef VAR
240		300
241	static int default_loop;	301	static int ev_default_loop_ptr;
242		302
243	#endif	303	#endif
244		304
245	/*****************************************************************************/	305	/*****************************************************************************/
246		306
247	inline ev_tstamp	307	ev_tstamp
248	ev_time (void)	308	ev_time (void)
249	{	309	{
250	#if EV_USE_REALTIME	310	#if EV_USE_REALTIME
251	struct timespec ts;	311	struct timespec ts;
252	clock_gettime (CLOCK_REALTIME, &ts);	312	clock_gettime (CLOCK_REALTIME, &ts);
…		…
271	#endif	331	#endif
272		332
273	return ev_time ();	333	return ev_time ();
274	}	334	}
275		335
		336	#if EV_MULTIPLICITY
276	ev_tstamp	337	ev_tstamp
277	ev_now (EV_P)	338	ev_now (EV_P)
278	{	339	{
279	return rt_now;	340	return ev_rt_now;
280	}	341	}
		342	#endif
281		343
282	#define array_roundsize(type,n) ((n) \| 4 & ~3)	344	#define array_roundsize(type,n) (((n) \| 4) & ~3)
283		345
284	#define array_needsize(type,base,cur,cnt,init) \	346	#define array_needsize(type,base,cur,cnt,init) \
285	if (expect_false ((cnt) > cur)) \	347	if (expect_false ((cnt) > cur)) \
286	{ \	348	{ \
287	int newcnt = cur; \	349	int newcnt = cur; \
…		…
302	stem ## max = array_roundsize (stem ## cnt >> 1); \	364	stem ## max = array_roundsize (stem ## cnt >> 1); \
303	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\	365	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
304	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	366	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
305	}	367	}
306		368
307	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
308	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
309	#define array_free_microshit(stem) \
310	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
311
312	#define array_free(stem, idx) \	369	#define array_free(stem, idx) \
313	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	370	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
314		371
315	/*****************************************************************************/	372	/*****************************************************************************/
316		373
…		…
330	void	387	void
331	ev_feed_event (EV_P_ void *w, int revents)	388	ev_feed_event (EV_P_ void *w, int revents)
332	{	389	{
333	W w_ = (W)w;	390	W w_ = (W)w;
334		391
335	if (w_->pending)	392	if (expect_false (w_->pending))
336	{	393	{
337	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;	394	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
338	return;	395	return;
339	}	396	}
340		397
341	w_->pending = ++pendingcnt [ABSPRI (w_)];	398	w_->pending = ++pendingcnt [ABSPRI (w_)];
342	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));	399	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
343	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;	400	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
344	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;	401	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
345	}	402	}
346		403
347	static void	404	static void
…		…
374	fd_event (EV_A_ fd, revents);	431	fd_event (EV_A_ fd, revents);
375	}	432	}
376		433
377	/*****************************************************************************/	434	/*****************************************************************************/
378		435
379	static void	436	inline void
380	fd_reify (EV_P)	437	fd_reify (EV_P)
381	{	438	{
382	int i;	439	int i;
383		440
384	for (i = 0; i < fdchangecnt; ++i)	441	for (i = 0; i < fdchangecnt; ++i)
…		…
390	int events = 0;	447	int events = 0;
391		448
392	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	449	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
393	events \|= w->events;	450	events \|= w->events;
394		451
		452	#if EV_SELECT_IS_WINSOCKET
		453	if (events)
		454	{
		455	unsigned long argp;
		456	anfd->handle = _get_osfhandle (fd);
		457	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		458	}
		459	#endif
		460
395	anfd->reify = 0;	461	anfd->reify = 0;
396		462
397	method_modify (EV_A_ fd, anfd->events, events);	463	method_modify (EV_A_ fd, anfd->events, events);
398	anfd->events = events;	464	anfd->events = events;
399	}	465	}
…		…
402	}	468	}
403		469
404	static void	470	static void
405	fd_change (EV_P_ int fd)	471	fd_change (EV_P_ int fd)
406	{	472	{
407	if (anfds [fd].reify)	473	if (expect_false (anfds [fd].reify))
408	return;	474	return;
409		475
410	anfds [fd].reify = 1;	476	anfds [fd].reify = 1;
411		477
412	++fdchangecnt;	478	++fdchangecnt;
413	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	479	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
414	fdchanges [fdchangecnt - 1] = fd;	480	fdchanges [fdchangecnt - 1] = fd;
415	}	481	}
416		482
417	static void	483	static void
418	fd_kill (EV_P_ int fd)	484	fd_kill (EV_P_ int fd)
…		…
424	ev_io_stop (EV_A_ w);	490	ev_io_stop (EV_A_ w);
425	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	491	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
426	}	492	}
427	}	493	}
428		494
429	static int	495	inline int
430	fd_valid (int fd)	496	fd_valid (int fd)
431	{	497	{
432	#ifdef WIN32	498	#ifdef _WIN32
433	return !!win32_get_osfhandle (fd);	499	return _get_osfhandle (fd) != -1;
434	#else	500	#else
435	return fcntl (fd, F_GETFD) != -1;	501	return fcntl (fd, F_GETFD) != -1;
436	#endif	502	#endif
437	}	503	}
438		504
…		…
519	heap [k] = w;	585	heap [k] = w;
520	((W)heap [k])->active = k + 1;	586	((W)heap [k])->active = k + 1;
521	}	587	}
522		588
523	inline void	589	inline void
524	adjustheap (WT *heap, int N, int k, ev_tstamp at)	590	adjustheap (WT *heap, int N, int k)
525	{	591	{
526	ev_tstamp old_at = heap [k]->at;	592	upheap (heap, k);
527	heap [k]->at = at;
528
529	if (old_at < at)
530	downheap (heap, N, k);	593	downheap (heap, N, k);
531	else
532	upheap (heap, k);
533	}	594	}
534		595
535	/*****************************************************************************/	596	/*****************************************************************************/
536		597
537	typedef struct	598	typedef struct
…		…
560	}	621	}
561		622
562	static void	623	static void
563	sighandler (int signum)	624	sighandler (int signum)
564	{	625	{
565	#if WIN32	626	#if _WIN32
566	signal (signum, sighandler);	627	signal (signum, sighandler);
567	#endif	628	#endif
568		629
569	signals [signum - 1].gotsig = 1;	630	signals [signum - 1].gotsig = 1;
570		631
571	if (!gotsig)	632	if (!gotsig)
572	{	633	{
573	int old_errno = errno;	634	int old_errno = errno;
574	gotsig = 1;	635	gotsig = 1;
575	#ifdef WIN32
576	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
577	#else
578	write (sigpipe [1], &signum, 1);	636	write (sigpipe [1], &signum, 1);
579	#endif
580	errno = old_errno;	637	errno = old_errno;
581	}	638	}
582	}	639	}
583		640
584	void	641	void
585	ev_feed_signal_event (EV_P_ int signum)	642	ev_feed_signal_event (EV_P_ int signum)
586	{	643	{
587	WL w;	644	WL w;
588		645
589	#if EV_MULTIPLICITY	646	#if EV_MULTIPLICITY
590	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	647	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
591	#endif	648	#endif
592		649
593	--signum;	650	--signum;
594		651
595	if (signum < 0 \|\| signum >= signalmax)	652	if (signum < 0 \|\| signum >= signalmax)
…		…
604	static void	661	static void
605	sigcb (EV_P_ struct ev_io *iow, int revents)	662	sigcb (EV_P_ struct ev_io *iow, int revents)
606	{	663	{
607	int signum;	664	int signum;
608		665
609	#ifdef WIN32
610	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
611	#else
612	read (sigpipe [0], &revents, 1);	666	read (sigpipe [0], &revents, 1);
613	#endif
614	gotsig = 0;	667	gotsig = 0;
615		668
616	for (signum = signalmax; signum--; )	669	for (signum = signalmax; signum--; )
617	if (signals [signum].gotsig)	670	if (signals [signum].gotsig)
618	ev_feed_signal_event (EV_A_ signum + 1);	671	ev_feed_signal_event (EV_A_ signum + 1);
619	}	672	}
620		673
621	static void	674	static void
		675	fd_intern (int fd)
		676	{
		677	#ifdef _WIN32
		678	int arg = 1;
		679	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		680	#else
		681	fcntl (fd, F_SETFD, FD_CLOEXEC);
		682	fcntl (fd, F_SETFL, O_NONBLOCK);
		683	#endif
		684	}
		685
		686	static void
622	siginit (EV_P)	687	siginit (EV_P)
623	{	688	{
624	#ifndef WIN32	689	fd_intern (sigpipe [0]);
625	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	690	fd_intern (sigpipe [1]);
626	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
627
628	/* rather than sort out wether we really need nb, set it */
629	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
630	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
631	#endif
632		691
633	ev_io_set (&sigev, sigpipe [0], EV_READ);	692	ev_io_set (&sigev, sigpipe [0], EV_READ);
634	ev_io_start (EV_A_ &sigev);	693	ev_io_start (EV_A_ &sigev);
635	ev_unref (EV_A); /* child watcher should not keep loop alive */	694	ev_unref (EV_A); /* child watcher should not keep loop alive */
636	}	695	}
637		696
638	/*****************************************************************************/	697	/*****************************************************************************/
639		698
640	static struct ev_child *childs [PID_HASHSIZE];	699	static struct ev_child *childs [PID_HASHSIZE];
641		700
642	#ifndef WIN32	701	#ifndef _WIN32
643		702
644	static struct ev_signal childev;	703	static struct ev_signal childev;
645		704
646	#ifndef WCONTINUED	705	#ifndef WCONTINUED
647	# define WCONTINUED 0	706	# define WCONTINUED 0
…		…
679		738
680	#endif	739	#endif
681		740
682	/*****************************************************************************/	741	/*****************************************************************************/
683		742
		743	#if EV_USE_PORT
		744	# include "ev_port.c"
		745	#endif
684	#if EV_USE_KQUEUE	746	#if EV_USE_KQUEUE
685	# include "ev_kqueue.c"	747	# include "ev_kqueue.c"
686	#endif	748	#endif
687	#if EV_USE_EPOLL	749	#if EV_USE_EPOLL
688	# include "ev_epoll.c"	750	# include "ev_epoll.c"
…		…
708		770
709	/* return true if we are running with elevated privileges and should ignore env variables */	771	/* return true if we are running with elevated privileges and should ignore env variables */
710	static int	772	static int
711	enable_secure (void)	773	enable_secure (void)
712	{	774	{
713	#ifdef WIN32	775	#ifdef _WIN32
714	return 0;	776	return 0;
715	#else	777	#else
716	return getuid () != geteuid ()	778	return getuid () != geteuid ()
717	\|\| getgid () != getegid ();	779	\|\| getgid () != getegid ();
718	#endif	780	#endif
719	}	781	}
720		782
721	int	783	unsigned int
722	ev_method (EV_P)	784	ev_supported_backends (void)
723	{	785	{
724	return method;
725	}	786	}
726		787
		788	unsigned int
		789	ev_recommended_backends (void)
		790	{
		791	unsigned int flags;
		792
		793	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
		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_backend (EV_P)
		804	{
		805	unsigned int flags = ev_recommended_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
727	static void	820	static void
728	loop_init (EV_P_ int methods)	821	loop_init (EV_P_ unsigned int flags)
729	{	822	{
730	if (!method)	823	if (!method)
731	{	824	{
732	#if EV_USE_MONOTONIC	825	#if EV_USE_MONOTONIC
733	{	826	{
…		…
735	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	828	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
736	have_monotonic = 1;	829	have_monotonic = 1;
737	}	830	}
738	#endif	831	#endif
739		832
740	rt_now = ev_time ();	833	ev_rt_now = ev_time ();
741	mn_now = get_clock ();	834	mn_now = get_clock ();
742	now_floor = mn_now;	835	now_floor = mn_now;
743	rtmn_diff = rt_now - mn_now;	836	rtmn_diff = ev_rt_now - mn_now;
744		837
745	if (methods == EVMETHOD_AUTO)	838	if (!(flags & EVFLAG_NOENV)
746	if (!enable_secure () && getenv ("LIBEV_METHODS"))	839	&& !enable_secure ()
		840	&& getenv ("LIBEV_FLAGS"))
747	methods = atoi (getenv ("LIBEV_METHODS"));	841	flags = atoi (getenv ("LIBEV_FLAGS"));
748	else	842
749	methods = EVMETHOD_ANY;	843	if (!(flags & 0x0000ffffUL))
		844	flags \|= ev_recommended_backends ();
750		845
751	method = 0;	846	method = 0;
752	#if EV_USE_WIN32	847	#if EV_USE_PORT
753	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	848	if (!method && (flags & EVBACKEND_PORT )) method = port_init (EV_A_ flags);
754	#endif	849	#endif
755	#if EV_USE_KQUEUE	850	#if EV_USE_KQUEUE
756	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	851	if (!method && (flags & EVBACKEND_KQUEUE)) method = kqueue_init (EV_A_ flags);
757	#endif	852	#endif
758	#if EV_USE_EPOLL	853	#if EV_USE_EPOLL
759	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	854	if (!method && (flags & EVBACKEND_EPOLL )) method = epoll_init (EV_A_ flags);
760	#endif	855	#endif
761	#if EV_USE_POLL	856	#if EV_USE_POLL
762	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	857	if (!method && (flags & EVBACKEND_POLL )) method = poll_init (EV_A_ flags);
763	#endif	858	#endif
764	#if EV_USE_SELECT	859	#if EV_USE_SELECT
765	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	860	if (!method && (flags & EVBACKEND_SELECT)) method = select_init (EV_A_ flags);
766	#endif	861	#endif
767		862
768	ev_init (&sigev, sigcb);	863	ev_init (&sigev, sigcb);
769	ev_set_priority (&sigev, EV_MAXPRI);	864	ev_set_priority (&sigev, EV_MAXPRI);
770	}	865	}
771	}	866	}
772		867
773	void	868	static void
774	loop_destroy (EV_P)	869	loop_destroy (EV_P)
775	{	870	{
776	int i;	871	int i;
777		872
778	#if EV_USE_WIN32	873	#if EV_USE_PORT
779	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	874	if (method == EVBACKEND_PORT ) port_destroy (EV_A);
780	#endif	875	#endif
781	#if EV_USE_KQUEUE	876	#if EV_USE_KQUEUE
782	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	877	if (method == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
783	#endif	878	#endif
784	#if EV_USE_EPOLL	879	#if EV_USE_EPOLL
785	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	880	if (method == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
786	#endif	881	#endif
787	#if EV_USE_POLL	882	#if EV_USE_POLL
788	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	883	if (method == EVBACKEND_POLL ) poll_destroy (EV_A);
789	#endif	884	#endif
790	#if EV_USE_SELECT	885	#if EV_USE_SELECT
791	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	886	if (method == EVBACKEND_SELECT) select_destroy (EV_A);
792	#endif	887	#endif
793		888
794	for (i = NUMPRI; i--; )	889	for (i = NUMPRI; i--; )
795	array_free (pending, [i]);	890	array_free (pending, [i]);
796		891
797	/* have to use the microsoft-never-gets-it-right macro */	892	/* have to use the microsoft-never-gets-it-right macro */
798	array_free_microshit (fdchange);	893	array_free (fdchange, EMPTY0);
799	array_free_microshit (timer);	894	array_free (timer, EMPTY0);
800	array_free_microshit (periodic);	895	#if EV_PERIODICS
801	array_free_microshit (idle);	896	array_free (periodic, EMPTY0);
802	array_free_microshit (prepare);	897	#endif
803	array_free_microshit (check);	898	array_free (idle, EMPTY0);
		899	array_free (prepare, EMPTY0);
		900	array_free (check, EMPTY0);
804		901
805	method = 0;	902	method = 0;
806	}	903	}
807		904
808	static void	905	static void
809	loop_fork (EV_P)	906	loop_fork (EV_P)
810	{	907	{
		908	#if EV_USE_PORT
		909	if (method == EVBACKEND_PORT ) port_fork (EV_A);
		910	#endif
		911	#if EV_USE_KQUEUE
		912	if (method == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		913	#endif
811	#if EV_USE_EPOLL	914	#if EV_USE_EPOLL
812	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	915	if (method == EVBACKEND_EPOLL ) epoll_fork (EV_A);
813	#endif
814	#if EV_USE_KQUEUE
815	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
816	#endif	916	#endif
817		917
818	if (ev_is_active (&sigev))	918	if (ev_is_active (&sigev))
819	{	919	{
820	/* default loop */	920	/* default loop */
…		…
833	postfork = 0;	933	postfork = 0;
834	}	934	}
835		935
836	#if EV_MULTIPLICITY	936	#if EV_MULTIPLICITY
837	struct ev_loop *	937	struct ev_loop *
838	ev_loop_new (int methods)	938	ev_loop_new (unsigned int flags)
839	{	939	{
840	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	940	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
841		941
842	memset (loop, 0, sizeof (struct ev_loop));	942	memset (loop, 0, sizeof (struct ev_loop));
843		943
844	loop_init (EV_A_ methods);	944	loop_init (EV_A_ flags);
845		945
846	if (ev_method (EV_A))	946	if (ev_method (EV_A))
847	return loop;	947	return loop;
848		948
849	return 0;	949	return 0;
…		…
864		964
865	#endif	965	#endif
866		966
867	#if EV_MULTIPLICITY	967	#if EV_MULTIPLICITY
868	struct ev_loop *	968	struct ev_loop *
		969	ev_default_loop_init (unsigned int flags)
869	#else	970	#else
870	int	971	int
		972	ev_default_loop (unsigned int flags)
871	#endif	973	#endif
872	ev_default_loop (int methods)
873	{	974	{
874	if (sigpipe [0] == sigpipe [1])	975	if (sigpipe [0] == sigpipe [1])
875	if (pipe (sigpipe))	976	if (pipe (sigpipe))
876	return 0;	977	return 0;
877		978
878	if (!default_loop)	979	if (!ev_default_loop_ptr)
879	{	980	{
880	#if EV_MULTIPLICITY	981	#if EV_MULTIPLICITY
881	struct ev_loop *loop = default_loop = &default_loop_struct;	982	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
882	#else	983	#else
883	default_loop = 1;	984	ev_default_loop_ptr = 1;
884	#endif	985	#endif
885		986
886	loop_init (EV_A_ methods);	987	loop_init (EV_A_ flags);
887		988
888	if (ev_method (EV_A))	989	if (ev_method (EV_A))
889	{	990	{
890	siginit (EV_A);	991	siginit (EV_A);
891		992
892	#ifndef WIN32	993	#ifndef _WIN32
893	ev_signal_init (&childev, childcb, SIGCHLD);	994	ev_signal_init (&childev, childcb, SIGCHLD);
894	ev_set_priority (&childev, EV_MAXPRI);	995	ev_set_priority (&childev, EV_MAXPRI);
895	ev_signal_start (EV_A_ &childev);	996	ev_signal_start (EV_A_ &childev);
896	ev_unref (EV_A); /* child watcher should not keep loop alive */	997	ev_unref (EV_A); /* child watcher should not keep loop alive */
897	#endif	998	#endif
898	}	999	}
899	else	1000	else
900	default_loop = 0;	1001	ev_default_loop_ptr = 0;
901	}	1002	}
902		1003
903	return default_loop;	1004	return ev_default_loop_ptr;
904	}	1005	}
905		1006
906	void	1007	void
907	ev_default_destroy (void)	1008	ev_default_destroy (void)
908	{	1009	{
909	#if EV_MULTIPLICITY	1010	#if EV_MULTIPLICITY
910	struct ev_loop *loop = default_loop;	1011	struct ev_loop *loop = ev_default_loop_ptr;
911	#endif	1012	#endif
912		1013
913	#ifndef WIN32	1014	#ifndef _WIN32
914	ev_ref (EV_A); /* child watcher */	1015	ev_ref (EV_A); /* child watcher */
915	ev_signal_stop (EV_A_ &childev);	1016	ev_signal_stop (EV_A_ &childev);
916	#endif	1017	#endif
917		1018
918	ev_ref (EV_A); /* signal watcher */	1019	ev_ref (EV_A); /* signal watcher */
…		…
926		1027
927	void	1028	void
928	ev_default_fork (void)	1029	ev_default_fork (void)
929	{	1030	{
930	#if EV_MULTIPLICITY	1031	#if EV_MULTIPLICITY
931	struct ev_loop *loop = default_loop;	1032	struct ev_loop *loop = ev_default_loop_ptr;
932	#endif	1033	#endif
933		1034
934	if (method)	1035	if (method)
935	postfork = 1;	1036	postfork = 1;
936	}	1037	}
…		…
947	return 1;	1048	return 1;
948		1049
949	return 0;	1050	return 0;
950	}	1051	}
951		1052
952	static void	1053	inline void
953	call_pending (EV_P)	1054	call_pending (EV_P)
954	{	1055	{
955	int pri;	1056	int pri;
956		1057
957	for (pri = NUMPRI; pri--; )	1058	for (pri = NUMPRI; pri--; )
958	while (pendingcnt [pri])	1059	while (pendingcnt [pri])
959	{	1060	{
960	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1061	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
961		1062
962	if (p->w)	1063	if (expect_true (p->w))
963	{	1064	{
964	p->w->pending = 0;	1065	p->w->pending = 0;
965	EV_CB_INVOKE (p->w, p->events);	1066	EV_CB_INVOKE (p->w, p->events);
966	}	1067	}
967	}	1068	}
968	}	1069	}
969		1070
970	static void	1071	inline void
971	timers_reify (EV_P)	1072	timers_reify (EV_P)
972	{	1073	{
973	while (timercnt && ((WT)timers [0])->at <= mn_now)	1074	while (timercnt && ((WT)timers [0])->at <= mn_now)
974	{	1075	{
975	struct ev_timer *w = timers [0];	1076	struct ev_timer *w = timers [0];
…		…
978		1079
979	/* first reschedule or stop timer */	1080	/* first reschedule or stop timer */
980	if (w->repeat)	1081	if (w->repeat)
981	{	1082	{
982	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1083	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1084
983	((WT)w)->at = mn_now + w->repeat;	1085	((WT)w)->at += w->repeat;
		1086	if (((WT)w)->at < mn_now)
		1087	((WT)w)->at = mn_now;
		1088
984	downheap ((WT *)timers, timercnt, 0);	1089	downheap ((WT *)timers, timercnt, 0);
985	}	1090	}
986	else	1091	else
987	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1092	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
988		1093
989	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1094	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
990	}	1095	}
991	}	1096	}
992		1097
993	static void	1098	#if EV_PERIODICS
		1099	inline void
994	periodics_reify (EV_P)	1100	periodics_reify (EV_P)
995	{	1101	{
996	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1102	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
997	{	1103	{
998	struct ev_periodic *w = periodics [0];	1104	struct ev_periodic *w = periodics [0];
999		1105
1000	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1106	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1001		1107
1002	/* first reschedule or stop timer */	1108	/* first reschedule or stop timer */
1003	if (w->reschedule_cb)	1109	if (w->reschedule_cb)
1004	{	1110	{
1005	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);	1111	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1006
1007	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));	1112	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1008	downheap ((WT *)periodics, periodiccnt, 0);	1113	downheap ((WT *)periodics, periodiccnt, 0);
1009	}	1114	}
1010	else if (w->interval)	1115	else if (w->interval)
1011	{	1116	{
1012	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1117	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
1013	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1118	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1014	downheap ((WT *)periodics, periodiccnt, 0);	1119	downheap ((WT *)periodics, periodiccnt, 0);
1015	}	1120	}
1016	else	1121	else
1017	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1122	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1018		1123
…		…
1029	for (i = 0; i < periodiccnt; ++i)	1134	for (i = 0; i < periodiccnt; ++i)
1030	{	1135	{
1031	struct ev_periodic *w = periodics [i];	1136	struct ev_periodic *w = periodics [i];
1032		1137
1033	if (w->reschedule_cb)	1138	if (w->reschedule_cb)
1034	((WT)w)->at = w->reschedule_cb (w, rt_now);	1139	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1035	else if (w->interval)	1140	else if (w->interval)
1036	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1141	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1037	}	1142	}
1038		1143
1039	/* now rebuild the heap */	1144	/* now rebuild the heap */
1040	for (i = periodiccnt >> 1; i--; )	1145	for (i = periodiccnt >> 1; i--; )
1041	downheap ((WT *)periodics, periodiccnt, i);	1146	downheap ((WT *)periodics, periodiccnt, i);
1042	}	1147	}
		1148	#endif
1043		1149
1044	inline int	1150	inline int
1045	time_update_monotonic (EV_P)	1151	time_update_monotonic (EV_P)
1046	{	1152	{
1047	mn_now = get_clock ();	1153	mn_now = get_clock ();
1048		1154
1049	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1155	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1050	{	1156	{
1051	rt_now = rtmn_diff + mn_now;	1157	ev_rt_now = rtmn_diff + mn_now;
1052	return 0;	1158	return 0;
1053	}	1159	}
1054	else	1160	else
1055	{	1161	{
1056	now_floor = mn_now;	1162	now_floor = mn_now;
1057	rt_now = ev_time ();	1163	ev_rt_now = ev_time ();
1058	return 1;	1164	return 1;
1059	}	1165	}
1060	}	1166	}
1061		1167
1062	static void	1168	inline void
1063	time_update (EV_P)	1169	time_update (EV_P)
1064	{	1170	{
1065	int i;	1171	int i;
1066		1172
1067	#if EV_USE_MONOTONIC	1173	#if EV_USE_MONOTONIC
…		…
1071	{	1177	{
1072	ev_tstamp odiff = rtmn_diff;	1178	ev_tstamp odiff = rtmn_diff;
1073		1179
1074	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1180	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1075	{	1181	{
1076	rtmn_diff = rt_now - mn_now;	1182	rtmn_diff = ev_rt_now - mn_now;
1077		1183
1078	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1184	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1079	return; /* all is well */	1185	return; /* all is well */
1080		1186
1081	rt_now = ev_time ();	1187	ev_rt_now = ev_time ();
1082	mn_now = get_clock ();	1188	mn_now = get_clock ();
1083	now_floor = mn_now;	1189	now_floor = mn_now;
1084	}	1190	}
1085		1191
		1192	# if EV_PERIODICS
1086	periodics_reschedule (EV_A);	1193	periodics_reschedule (EV_A);
		1194	# endif
1087	/* no timer adjustment, as the monotonic clock doesn't jump */	1195	/* no timer adjustment, as the monotonic clock doesn't jump */
1088	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1196	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1089	}	1197	}
1090	}	1198	}
1091	else	1199	else
1092	#endif	1200	#endif
1093	{	1201	{
1094	rt_now = ev_time ();	1202	ev_rt_now = ev_time ();
1095		1203
1096	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1204	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1097	{	1205	{
		1206	#if EV_PERIODICS
1098	periodics_reschedule (EV_A);	1207	periodics_reschedule (EV_A);
		1208	#endif
1099		1209
1100	/* adjust timers. this is easy, as the offset is the same for all */	1210	/* adjust timers. this is easy, as the offset is the same for all */
1101	for (i = 0; i < timercnt; ++i)	1211	for (i = 0; i < timercnt; ++i)
1102	((WT)timers [i])->at += rt_now - mn_now;	1212	((WT)timers [i])->at += ev_rt_now - mn_now;
1103	}	1213	}
1104		1214
1105	mn_now = rt_now;	1215	mn_now = ev_rt_now;
1106	}	1216	}
1107	}	1217	}
1108		1218
1109	void	1219	void
1110	ev_ref (EV_P)	1220	ev_ref (EV_P)
…		…
1124	ev_loop (EV_P_ int flags)	1234	ev_loop (EV_P_ int flags)
1125	{	1235	{
1126	double block;	1236	double block;
1127	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1237	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
1128		1238
1129	do	1239	while (activecnt)
1130	{	1240	{
1131	/* queue check watchers (and execute them) */	1241	/* queue check watchers (and execute them) */
1132	if (expect_false (preparecnt))	1242	if (expect_false (preparecnt))
1133	{	1243	{
1134	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1244	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1150	if (expect_true (have_monotonic))	1260	if (expect_true (have_monotonic))
1151	time_update_monotonic (EV_A);	1261	time_update_monotonic (EV_A);
1152	else	1262	else
1153	#endif	1263	#endif
1154	{	1264	{
1155	rt_now = ev_time ();	1265	ev_rt_now = ev_time ();
1156	mn_now = rt_now;	1266	mn_now = ev_rt_now;
1157	}	1267	}
1158		1268
1159	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1269	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1160	block = 0.;	1270	block = 0.;
1161	else	1271	else
…		…
1166	{	1276	{
1167	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1277	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
1168	if (block > to) block = to;	1278	if (block > to) block = to;
1169	}	1279	}
1170		1280
		1281	#if EV_PERIODICS
1171	if (periodiccnt)	1282	if (periodiccnt)
1172	{	1283	{
1173	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1284	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
1174	if (block > to) block = to;	1285	if (block > to) block = to;
1175	}	1286	}
		1287	#endif
1176		1288
1177	if (block < 0.) block = 0.;	1289	if (expect_false (block < 0.)) block = 0.;
1178	}	1290	}
1179		1291
1180	method_poll (EV_A_ block);	1292	method_poll (EV_A_ block);
1181		1293
1182	/* update rt_now, do magic */	1294	/* update ev_rt_now, do magic */
1183	time_update (EV_A);	1295	time_update (EV_A);
1184		1296
1185	/* queue pending timers and reschedule them */	1297	/* queue pending timers and reschedule them */
1186	timers_reify (EV_A); /* relative timers called last */	1298	timers_reify (EV_A); /* relative timers called last */
		1299	#if EV_PERIODICS
1187	periodics_reify (EV_A); /* absolute timers called first */	1300	periodics_reify (EV_A); /* absolute timers called first */
		1301	#endif
1188		1302
1189	/* queue idle watchers unless io or timers are pending */	1303	/* queue idle watchers unless io or timers are pending */
1190	if (idlecnt && !any_pending (EV_A))	1304	if (idlecnt && !any_pending (EV_A))
1191	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1305	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1192		1306
1193	/* queue check watchers, to be executed first */	1307	/* queue check watchers, to be executed first */
1194	if (checkcnt)	1308	if (expect_false (checkcnt))
1195	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1309	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1196		1310
1197	call_pending (EV_A);	1311	call_pending (EV_A);
		1312
		1313	if (expect_false (loop_done))
		1314	break;
1198	}	1315	}
1199	while (activecnt && !loop_done);
1200		1316
1201	if (loop_done != 2)	1317	if (loop_done != 2)
1202	loop_done = 0;	1318	loop_done = 0;
1203	}	1319	}
1204		1320
…		…
1264	void	1380	void
1265	ev_io_start (EV_P_ struct ev_io *w)	1381	ev_io_start (EV_P_ struct ev_io *w)
1266	{	1382	{
1267	int fd = w->fd;	1383	int fd = w->fd;
1268		1384
1269	if (ev_is_active (w))	1385	if (expect_false (ev_is_active (w)))
1270	return;	1386	return;
1271		1387
1272	assert (("ev_io_start called with negative fd", fd >= 0));	1388	assert (("ev_io_start called with negative fd", fd >= 0));
1273		1389
1274	ev_start (EV_A_ (W)w, 1);	1390	ev_start (EV_A_ (W)w, 1);
…		…
1280		1396
1281	void	1397	void
1282	ev_io_stop (EV_P_ struct ev_io *w)	1398	ev_io_stop (EV_P_ struct ev_io *w)
1283	{	1399	{
1284	ev_clear_pending (EV_A_ (W)w);	1400	ev_clear_pending (EV_A_ (W)w);
1285	if (!ev_is_active (w))	1401	if (expect_false (!ev_is_active (w)))
1286	return;	1402	return;
		1403
		1404	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1287		1405
1288	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1406	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1289	ev_stop (EV_A_ (W)w);	1407	ev_stop (EV_A_ (W)w);
1290		1408
1291	fd_change (EV_A_ w->fd);	1409	fd_change (EV_A_ w->fd);
1292	}	1410	}
1293		1411
1294	void	1412	void
1295	ev_timer_start (EV_P_ struct ev_timer *w)	1413	ev_timer_start (EV_P_ struct ev_timer *w)
1296	{	1414	{
1297	if (ev_is_active (w))	1415	if (expect_false (ev_is_active (w)))
1298	return;	1416	return;
1299		1417
1300	((WT)w)->at += mn_now;	1418	((WT)w)->at += mn_now;
1301		1419
1302	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1420	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1303		1421
1304	ev_start (EV_A_ (W)w, ++timercnt);	1422	ev_start (EV_A_ (W)w, ++timercnt);
1305	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1423	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1306	timers [timercnt - 1] = w;	1424	timers [timercnt - 1] = w;
1307	upheap ((WT *)timers, timercnt - 1);	1425	upheap ((WT *)timers, timercnt - 1);
1308		1426
1309	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1427	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1310	}	1428	}
1311		1429
1312	void	1430	void
1313	ev_timer_stop (EV_P_ struct ev_timer *w)	1431	ev_timer_stop (EV_P_ struct ev_timer *w)
1314	{	1432	{
1315	ev_clear_pending (EV_A_ (W)w);	1433	ev_clear_pending (EV_A_ (W)w);
1316	if (!ev_is_active (w))	1434	if (expect_false (!ev_is_active (w)))
1317	return;	1435	return;
1318		1436
1319	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1437	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1320		1438
1321	if (((W)w)->active < timercnt--)	1439	if (expect_true (((W)w)->active < timercnt--))
1322	{	1440	{
1323	timers [((W)w)->active - 1] = timers [timercnt];	1441	timers [((W)w)->active - 1] = timers [timercnt];
1324	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1442	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1325	}	1443	}
1326		1444
1327	((WT)w)->at = w->repeat;	1445	((WT)w)->at -= mn_now;
1328		1446
1329	ev_stop (EV_A_ (W)w);	1447	ev_stop (EV_A_ (W)w);
1330	}	1448	}
1331		1449
1332	void	1450	void
1333	ev_timer_again (EV_P_ struct ev_timer *w)	1451	ev_timer_again (EV_P_ struct ev_timer *w)
1334	{	1452	{
1335	if (ev_is_active (w))	1453	if (ev_is_active (w))
1336	{	1454	{
1337	if (w->repeat)	1455	if (w->repeat)
		1456	{
		1457	((WT)w)->at = mn_now + w->repeat;
1338	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1458	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
		1459	}
1339	else	1460	else
1340	ev_timer_stop (EV_A_ w);	1461	ev_timer_stop (EV_A_ w);
1341	}	1462	}
1342	else if (w->repeat)	1463	else if (w->repeat)
		1464	{
		1465	w->at = w->repeat;
1343	ev_timer_start (EV_A_ w);	1466	ev_timer_start (EV_A_ w);
		1467	}
1344	}	1468	}
1345		1469
		1470	#if EV_PERIODICS
1346	void	1471	void
1347	ev_periodic_start (EV_P_ struct ev_periodic *w)	1472	ev_periodic_start (EV_P_ struct ev_periodic *w)
1348	{	1473	{
1349	if (ev_is_active (w))	1474	if (expect_false (ev_is_active (w)))
1350	return;	1475	return;
1351		1476
1352	if (w->reschedule_cb)	1477	if (w->reschedule_cb)
1353	((WT)w)->at = w->reschedule_cb (w, rt_now);	1478	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1354	else if (w->interval)	1479	else if (w->interval)
1355	{	1480	{
1356	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1481	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1357	/* this formula differs from the one in periodic_reify because we do not always round up */	1482	/* this formula differs from the one in periodic_reify because we do not always round up */
1358	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1483	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1359	}	1484	}
1360		1485
1361	ev_start (EV_A_ (W)w, ++periodiccnt);	1486	ev_start (EV_A_ (W)w, ++periodiccnt);
1362	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1487	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1363	periodics [periodiccnt - 1] = w;	1488	periodics [periodiccnt - 1] = w;
1364	upheap ((WT *)periodics, periodiccnt - 1);	1489	upheap ((WT *)periodics, periodiccnt - 1);
1365		1490
1366	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1491	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1367	}	1492	}
1368		1493
1369	void	1494	void
1370	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1495	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1371	{	1496	{
1372	ev_clear_pending (EV_A_ (W)w);	1497	ev_clear_pending (EV_A_ (W)w);
1373	if (!ev_is_active (w))	1498	if (expect_false (!ev_is_active (w)))
1374	return;	1499	return;
1375		1500
1376	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1501	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1377		1502
1378	if (((W)w)->active < periodiccnt--)	1503	if (expect_true (((W)w)->active < periodiccnt--))
1379	{	1504	{
1380	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1505	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1381	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1506	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1382	}	1507	}
1383		1508
1384	ev_stop (EV_A_ (W)w);	1509	ev_stop (EV_A_ (W)w);
1385	}	1510	}
1386		1511
…		…
1389	{	1514	{
1390	/* TODO: use adjustheap and recalculation */	1515	/* TODO: use adjustheap and recalculation */
1391	ev_periodic_stop (EV_A_ w);	1516	ev_periodic_stop (EV_A_ w);
1392	ev_periodic_start (EV_A_ w);	1517	ev_periodic_start (EV_A_ w);
1393	}	1518	}
		1519	#endif
1394		1520
1395	void	1521	void
1396	ev_idle_start (EV_P_ struct ev_idle *w)	1522	ev_idle_start (EV_P_ struct ev_idle *w)
1397	{	1523	{
1398	if (ev_is_active (w))	1524	if (expect_false (ev_is_active (w)))
1399	return;	1525	return;
1400		1526
1401	ev_start (EV_A_ (W)w, ++idlecnt);	1527	ev_start (EV_A_ (W)w, ++idlecnt);
1402	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));	1528	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1403	idles [idlecnt - 1] = w;	1529	idles [idlecnt - 1] = w;
1404	}	1530	}
1405		1531
1406	void	1532	void
1407	ev_idle_stop (EV_P_ struct ev_idle *w)	1533	ev_idle_stop (EV_P_ struct ev_idle *w)
1408	{	1534	{
1409	ev_clear_pending (EV_A_ (W)w);	1535	ev_clear_pending (EV_A_ (W)w);
1410	if (ev_is_active (w))	1536	if (expect_false (!ev_is_active (w)))
1411	return;	1537	return;
1412		1538
1413	idles [((W)w)->active - 1] = idles [--idlecnt];	1539	idles [((W)w)->active - 1] = idles [--idlecnt];
1414	ev_stop (EV_A_ (W)w);	1540	ev_stop (EV_A_ (W)w);
1415	}	1541	}
1416		1542
1417	void	1543	void
1418	ev_prepare_start (EV_P_ struct ev_prepare *w)	1544	ev_prepare_start (EV_P_ struct ev_prepare *w)
1419	{	1545	{
1420	if (ev_is_active (w))	1546	if (expect_false (ev_is_active (w)))
1421	return;	1547	return;
1422		1548
1423	ev_start (EV_A_ (W)w, ++preparecnt);	1549	ev_start (EV_A_ (W)w, ++preparecnt);
1424	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));	1550	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1425	prepares [preparecnt - 1] = w;	1551	prepares [preparecnt - 1] = w;
1426	}	1552	}
1427		1553
1428	void	1554	void
1429	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1555	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1430	{	1556	{
1431	ev_clear_pending (EV_A_ (W)w);	1557	ev_clear_pending (EV_A_ (W)w);
1432	if (ev_is_active (w))	1558	if (expect_false (!ev_is_active (w)))
1433	return;	1559	return;
1434		1560
1435	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1561	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1436	ev_stop (EV_A_ (W)w);	1562	ev_stop (EV_A_ (W)w);
1437	}	1563	}
1438		1564
1439	void	1565	void
1440	ev_check_start (EV_P_ struct ev_check *w)	1566	ev_check_start (EV_P_ struct ev_check *w)
1441	{	1567	{
1442	if (ev_is_active (w))	1568	if (expect_false (ev_is_active (w)))
1443	return;	1569	return;
1444		1570
1445	ev_start (EV_A_ (W)w, ++checkcnt);	1571	ev_start (EV_A_ (W)w, ++checkcnt);
1446	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));	1572	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1447	checks [checkcnt - 1] = w;	1573	checks [checkcnt - 1] = w;
1448	}	1574	}
1449		1575
1450	void	1576	void
1451	ev_check_stop (EV_P_ struct ev_check *w)	1577	ev_check_stop (EV_P_ struct ev_check *w)
1452	{	1578	{
1453	ev_clear_pending (EV_A_ (W)w);	1579	ev_clear_pending (EV_A_ (W)w);
1454	if (ev_is_active (w))	1580	if (expect_false (!ev_is_active (w)))
1455	return;	1581	return;
1456		1582
1457	checks [((W)w)->active - 1] = checks [--checkcnt];	1583	checks [((W)w)->active - 1] = checks [--checkcnt];
1458	ev_stop (EV_A_ (W)w);	1584	ev_stop (EV_A_ (W)w);
1459	}	1585	}
…		…
1464		1590
1465	void	1591	void
1466	ev_signal_start (EV_P_ struct ev_signal *w)	1592	ev_signal_start (EV_P_ struct ev_signal *w)
1467	{	1593	{
1468	#if EV_MULTIPLICITY	1594	#if EV_MULTIPLICITY
1469	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1595	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1470	#endif	1596	#endif
1471	if (ev_is_active (w))	1597	if (expect_false (ev_is_active (w)))
1472	return;	1598	return;
1473		1599
1474	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1600	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1475		1601
1476	ev_start (EV_A_ (W)w, 1);	1602	ev_start (EV_A_ (W)w, 1);
1477	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1603	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1478	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1604	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1479		1605
1480	if (!((WL)w)->next)	1606	if (!((WL)w)->next)
1481	{	1607	{
1482	#if WIN32	1608	#if _WIN32
1483	signal (w->signum, sighandler);	1609	signal (w->signum, sighandler);
1484	#else	1610	#else
1485	struct sigaction sa;	1611	struct sigaction sa;
1486	sa.sa_handler = sighandler;	1612	sa.sa_handler = sighandler;
1487	sigfillset (&sa.sa_mask);	1613	sigfillset (&sa.sa_mask);
…		…
1493		1619
1494	void	1620	void
1495	ev_signal_stop (EV_P_ struct ev_signal *w)	1621	ev_signal_stop (EV_P_ struct ev_signal *w)
1496	{	1622	{
1497	ev_clear_pending (EV_A_ (W)w);	1623	ev_clear_pending (EV_A_ (W)w);
1498	if (!ev_is_active (w))	1624	if (expect_false (!ev_is_active (w)))
1499	return;	1625	return;
1500		1626
1501	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1627	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1502	ev_stop (EV_A_ (W)w);	1628	ev_stop (EV_A_ (W)w);
1503		1629
…		…
1507		1633
1508	void	1634	void
1509	ev_child_start (EV_P_ struct ev_child *w)	1635	ev_child_start (EV_P_ struct ev_child *w)
1510	{	1636	{
1511	#if EV_MULTIPLICITY	1637	#if EV_MULTIPLICITY
1512	assert (("child watchers are only supported in the default loop", loop == default_loop));	1638	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1513	#endif	1639	#endif
1514	if (ev_is_active (w))	1640	if (expect_false (ev_is_active (w)))
1515	return;	1641	return;
1516		1642
1517	ev_start (EV_A_ (W)w, 1);	1643	ev_start (EV_A_ (W)w, 1);
1518	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1644	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1519	}	1645	}
1520		1646
1521	void	1647	void
1522	ev_child_stop (EV_P_ struct ev_child *w)	1648	ev_child_stop (EV_P_ struct ev_child *w)
1523	{	1649	{
1524	ev_clear_pending (EV_A_ (W)w);	1650	ev_clear_pending (EV_A_ (W)w);
1525	if (ev_is_active (w))	1651	if (expect_false (!ev_is_active (w)))
1526	return;	1652	return;
1527		1653
1528	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1654	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1529	ev_stop (EV_A_ (W)w);	1655	ev_stop (EV_A_ (W)w);
1530	}	1656	}
…		…
1567	void	1693	void
1568	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1694	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1569	{	1695	{
1570	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));	1696	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1571		1697
1572	if (!once)	1698	if (expect_false (!once))
		1699	{
1573	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1700	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1574	else	1701	return;
1575	{	1702	}
		1703
1576	once->cb = cb;	1704	once->cb = cb;
1577	once->arg = arg;	1705	once->arg = arg;
1578		1706
1579	ev_init (&once->io, once_cb_io);	1707	ev_init (&once->io, once_cb_io);
1580	if (fd >= 0)	1708	if (fd >= 0)
1581	{	1709	{
1582	ev_io_set (&once->io, fd, events);	1710	ev_io_set (&once->io, fd, events);
1583	ev_io_start (EV_A_ &once->io);	1711	ev_io_start (EV_A_ &once->io);
1584	}	1712	}
1585		1713
1586	ev_init (&once->to, once_cb_to);	1714	ev_init (&once->to, once_cb_to);
1587	if (timeout >= 0.)	1715	if (timeout >= 0.)
1588	{	1716	{
1589	ev_timer_set (&once->to, timeout, 0.);	1717	ev_timer_set (&once->to, timeout, 0.);
1590	ev_timer_start (EV_A_ &once->to);	1718	ev_timer_start (EV_A_ &once->to);
1591	}
1592	}	1719	}
1593	}	1720	}
1594		1721
		1722	#ifdef __cplusplus
		1723	}
		1724	#endif
		1725

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Comparing libev/ev.c (file contents): Revision 1.84 by root, Fri Nov 9 23:04:35 2007 UTC vs. Revision 1.129 by root, Fri Nov 23 05:00:44 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.84 by root, Fri Nov 9 23:04:35 2007 UTC vs.
Revision 1.129 by root, Fri Nov 23 05:00:44 2007 UTC