[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 1.132 by root, Fri Nov 23 10:36:30 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;
…		…
222	#if EV_MULTIPLICITY	279	#if EV_MULTIPLICITY
223		280
224	struct ev_loop	281	struct ev_loop
225	{	282	{
226	ev_tstamp ev_rt_now;	283	ev_tstamp ev_rt_now;
		284	#define ev_rt_now ((loop)->ev_rt_now)
227	#define VAR(name,decl) decl;	285	#define VAR(name,decl) decl;
228	#include "ev_vars.h"	286	#include "ev_vars.h"
229	#undef VAR	287	#undef VAR
230	};	288	};
231	#include "ev_wrap.h"	289	#include "ev_wrap.h"
232		290
233	struct ev_loop default_loop_struct;	291	static struct ev_loop default_loop_struct;
234	static struct ev_loop *default_loop;	292	struct ev_loop *ev_default_loop_ptr;
235		293
236	#else	294	#else
237		295
238	ev_tstamp ev_rt_now;	296	ev_tstamp ev_rt_now;
239	#define VAR(name,decl) static decl;	297	#define VAR(name,decl) static decl;
240	#include "ev_vars.h"	298	#include "ev_vars.h"
241	#undef VAR	299	#undef VAR
242		300
243	static int default_loop;	301	static int ev_default_loop_ptr;
244		302
245	#endif	303	#endif
246		304
247	/*****************************************************************************/	305	/*****************************************************************************/
248		306
249	inline ev_tstamp	307	ev_tstamp
250	ev_time (void)	308	ev_time (void)
251	{	309	{
252	#if EV_USE_REALTIME	310	#if EV_USE_REALTIME
253	struct timespec ts;	311	struct timespec ts;
254	clock_gettime (CLOCK_REALTIME, &ts);	312	clock_gettime (CLOCK_REALTIME, &ts);
…		…
281	{	339	{
282	return ev_rt_now;	340	return ev_rt_now;
283	}	341	}
284	#endif	342	#endif
285		343
286	#define array_roundsize(type,n) ((n) \| 4 & ~3)	344	#define array_roundsize(type,n) (((n) \| 4) & ~3)
287		345
288	#define array_needsize(type,base,cur,cnt,init) \	346	#define array_needsize(type,base,cur,cnt,init) \
289	if (expect_false ((cnt) > cur)) \	347	if (expect_false ((cnt) > cur)) \
290	{ \	348	{ \
291	int newcnt = cur; \	349	int newcnt = cur; \
…		…
306	stem ## max = array_roundsize (stem ## cnt >> 1); \	364	stem ## max = array_roundsize (stem ## cnt >> 1); \
307	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\	365	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
308	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	366	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
309	}	367	}
310		368
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) \	369	#define array_free(stem, idx) \
317	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;
318		371
319	/*****************************************************************************/	372	/*****************************************************************************/
320		373
…		…
334	void	387	void
335	ev_feed_event (EV_P_ void *w, int revents)	388	ev_feed_event (EV_P_ void *w, int revents)
336	{	389	{
337	W w_ = (W)w;	390	W w_ = (W)w;
338		391
339	if (w_->pending)	392	if (expect_false (w_->pending))
340	{	393	{
341	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;	394	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
342	return;	395	return;
343	}	396	}
344		397
345	w_->pending = ++pendingcnt [ABSPRI (w_)];	398	w_->pending = ++pendingcnt [ABSPRI (w_)];
346	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);
347	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;	400	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
348	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;	401	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
349	}	402	}
350		403
351	static void	404	static void
…		…
378	fd_event (EV_A_ fd, revents);	431	fd_event (EV_A_ fd, revents);
379	}	432	}
380		433
381	/*****************************************************************************/	434	/*****************************************************************************/
382		435
383	static void	436	inline void
384	fd_reify (EV_P)	437	fd_reify (EV_P)
385	{	438	{
386	int i;	439	int i;
387		440
388	for (i = 0; i < fdchangecnt; ++i)	441	for (i = 0; i < fdchangecnt; ++i)
…		…
394	int events = 0;	447	int events = 0;
395		448
396	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)
397	events \|= w->events;	450	events \|= w->events;
398		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
399	anfd->reify = 0;	461	anfd->reify = 0;
400		462
401	method_modify (EV_A_ fd, anfd->events, events);	463	backend_modify (EV_A_ fd, anfd->events, events);
402	anfd->events = events;	464	anfd->events = events;
403	}	465	}
404		466
405	fdchangecnt = 0;	467	fdchangecnt = 0;
406	}	468	}
407		469
408	static void	470	static void
409	fd_change (EV_P_ int fd)	471	fd_change (EV_P_ int fd)
410	{	472	{
411	if (anfds [fd].reify)	473	if (expect_false (anfds [fd].reify))
412	return;	474	return;
413		475
414	anfds [fd].reify = 1;	476	anfds [fd].reify = 1;
415		477
416	++fdchangecnt;	478	++fdchangecnt;
417	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	479	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
418	fdchanges [fdchangecnt - 1] = fd;	480	fdchanges [fdchangecnt - 1] = fd;
419	}	481	}
420		482
421	static void	483	static void
422	fd_kill (EV_P_ int fd)	484	fd_kill (EV_P_ int fd)
…		…
428	ev_io_stop (EV_A_ w);	490	ev_io_stop (EV_A_ w);
429	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);
430	}	492	}
431	}	493	}
432		494
433	static int	495	inline int
434	fd_valid (int fd)	496	fd_valid (int fd)
435	{	497	{
436	#ifdef WIN32	498	#ifdef _WIN32
437	return !!win32_get_osfhandle (fd);	499	return _get_osfhandle (fd) != -1;
438	#else	500	#else
439	return fcntl (fd, F_GETFD) != -1;	501	return fcntl (fd, F_GETFD) != -1;
440	#endif	502	#endif
441	}	503	}
442		504
…		…
464	fd_kill (EV_A_ fd);	526	fd_kill (EV_A_ fd);
465	return;	527	return;
466	}	528	}
467	}	529	}
468		530
469	/* usually called after fork if method needs to re-arm all fds from scratch */	531	/* usually called after fork if backend needs to re-arm all fds from scratch */
470	static void	532	static void
471	fd_rearm_all (EV_P)	533	fd_rearm_all (EV_P)
472	{	534	{
473	int fd;	535	int fd;
474		536
…		…
523	heap [k] = w;	585	heap [k] = w;
524	((W)heap [k])->active = k + 1;	586	((W)heap [k])->active = k + 1;
525	}	587	}
526		588
527	inline void	589	inline void
528	adjustheap (WT *heap, int N, int k, ev_tstamp at)	590	adjustheap (WT *heap, int N, int k)
529	{	591	{
530	ev_tstamp old_at = heap [k]->at;	592	upheap (heap, k);
531	heap [k]->at = at;
532
533	if (old_at < at)
534	downheap (heap, N, k);	593	downheap (heap, N, k);
535	else
536	upheap (heap, k);
537	}	594	}
538		595
539	/*****************************************************************************/	596	/*****************************************************************************/
540		597
541	typedef struct	598	typedef struct
…		…
564	}	621	}
565		622
566	static void	623	static void
567	sighandler (int signum)	624	sighandler (int signum)
568	{	625	{
569	#if WIN32	626	#if _WIN32
570	signal (signum, sighandler);	627	signal (signum, sighandler);
571	#endif	628	#endif
572		629
573	signals [signum - 1].gotsig = 1;	630	signals [signum - 1].gotsig = 1;
574		631
575	if (!gotsig)	632	if (!gotsig)
576	{	633	{
577	int old_errno = errno;	634	int old_errno = errno;
578	gotsig = 1;	635	gotsig = 1;
579	#ifdef WIN32
580	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
581	#else
582	write (sigpipe [1], &signum, 1);	636	write (sigpipe [1], &signum, 1);
583	#endif
584	errno = old_errno;	637	errno = old_errno;
585	}	638	}
586	}	639	}
587		640
588	void	641	void
589	ev_feed_signal_event (EV_P_ int signum)	642	ev_feed_signal_event (EV_P_ int signum)
590	{	643	{
591	WL w;	644	WL w;
592		645
593	#if EV_MULTIPLICITY	646	#if EV_MULTIPLICITY
594	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));
595	#endif	648	#endif
596		649
597	--signum;	650	--signum;
598		651
599	if (signum < 0 \|\| signum >= signalmax)	652	if (signum < 0 \|\| signum >= signalmax)
…		…
608	static void	661	static void
609	sigcb (EV_P_ struct ev_io *iow, int revents)	662	sigcb (EV_P_ struct ev_io *iow, int revents)
610	{	663	{
611	int signum;	664	int signum;
612		665
613	#ifdef WIN32
614	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
615	#else
616	read (sigpipe [0], &revents, 1);	666	read (sigpipe [0], &revents, 1);
617	#endif
618	gotsig = 0;	667	gotsig = 0;
619		668
620	for (signum = signalmax; signum--; )	669	for (signum = signalmax; signum--; )
621	if (signals [signum].gotsig)	670	if (signals [signum].gotsig)
622	ev_feed_signal_event (EV_A_ signum + 1);	671	ev_feed_signal_event (EV_A_ signum + 1);
623	}	672	}
624		673
625	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
626	siginit (EV_P)	687	siginit (EV_P)
627	{	688	{
628	#ifndef WIN32	689	fd_intern (sigpipe [0]);
629	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	690	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		691
637	ev_io_set (&sigev, sigpipe [0], EV_READ);	692	ev_io_set (&sigev, sigpipe [0], EV_READ);
638	ev_io_start (EV_A_ &sigev);	693	ev_io_start (EV_A_ &sigev);
639	ev_unref (EV_A); /* child watcher should not keep loop alive */	694	ev_unref (EV_A); /* child watcher should not keep loop alive */
640	}	695	}
641		696
642	/*****************************************************************************/	697	/*****************************************************************************/
643		698
644	static struct ev_child *childs [PID_HASHSIZE];	699	static struct ev_child *childs [PID_HASHSIZE];
645		700
646	#ifndef WIN32	701	#ifndef _WIN32
647		702
648	static struct ev_signal childev;	703	static struct ev_signal childev;
649		704
650	#ifndef WCONTINUED	705	#ifndef WCONTINUED
651	# define WCONTINUED 0	706	# define WCONTINUED 0
…		…
672	int pid, status;	727	int pid, status;
673		728
674	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	729	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
675	{	730	{
676	/* make sure we are called again until all childs have been reaped */	731	/* make sure we are called again until all childs have been reaped */
		732	/* 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);	733	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
678		734
679	child_reap (EV_A_ sw, pid, pid, status);	735	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 */	736	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
681	}	737	}
682	}	738	}
683		739
684	#endif	740	#endif
685		741
686	/*****************************************************************************/	742	/*****************************************************************************/
687		743
		744	#if EV_USE_PORT
		745	# include "ev_port.c"
		746	#endif
688	#if EV_USE_KQUEUE	747	#if EV_USE_KQUEUE
689	# include "ev_kqueue.c"	748	# include "ev_kqueue.c"
690	#endif	749	#endif
691	#if EV_USE_EPOLL	750	#if EV_USE_EPOLL
692	# include "ev_epoll.c"	751	# include "ev_epoll.c"
…		…
712		771
713	/* return true if we are running with elevated privileges and should ignore env variables */	772	/* return true if we are running with elevated privileges and should ignore env variables */
714	static int	773	static int
715	enable_secure (void)	774	enable_secure (void)
716	{	775	{
717	#ifdef WIN32	776	#ifdef _WIN32
718	return 0;	777	return 0;
719	#else	778	#else
720	return getuid () != geteuid ()	779	return getuid () != geteuid ()
721	\|\| getgid () != getegid ();	780	\|\| getgid () != getegid ();
722	#endif	781	#endif
723	}	782	}
724		783
725	int	784	unsigned int
726	ev_method (EV_P)	785	ev_supported_backends (void)
727	{	786	{
728	return method;	787	unsigned int flags = 0;
729	}
730		788
731	static void	789	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
732	loop_init (EV_P_ int methods)	790	if (EV_USE_KQUEUE) flags \|= EVBACKEND_KQUEUE;
		791	if (EV_USE_EPOLL ) flags \|= EVBACKEND_EPOLL;
		792	if (EV_USE_POLL ) flags \|= EVBACKEND_POLL;
		793	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
		794
		795	return flags;
		796	}
		797
		798	unsigned int
		799	ev_recommended_backends (void)
733	{	800	{
734	if (!method)	801	unsigned int flags = ev_supported_backends ();
		802
		803	#ifndef __NetBSD__
		804	/* kqueue is borked on everything but netbsd apparently */
		805	/* it usually doesn't work correctly on anything but sockets and pipes */
		806	flags &= ~EVBACKEND_KQUEUE;
		807	#endif
		808	#ifdef __APPLE__
		809	// flags &= ~EVBACKEND_KQUEUE; for documentation
		810	flags &= ~EVBACKEND_POLL;
		811	#endif
		812
		813	return flags;
		814	}
		815
		816	unsigned int
		817	ev_backend (EV_P)
		818	{
		819	return backend;
		820	}
		821
		822	static void
		823	loop_init (EV_P_ unsigned int flags)
		824	{
		825	if (!backend)
735	{	826	{
736	#if EV_USE_MONOTONIC	827	#if EV_USE_MONOTONIC
737	{	828	{
738	struct timespec ts;	829	struct timespec ts;
739	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	830	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
744	ev_rt_now = ev_time ();	835	ev_rt_now = ev_time ();
745	mn_now = get_clock ();	836	mn_now = get_clock ();
746	now_floor = mn_now;	837	now_floor = mn_now;
747	rtmn_diff = ev_rt_now - mn_now;	838	rtmn_diff = ev_rt_now - mn_now;
748		839
749	if (methods == EVMETHOD_AUTO)	840	if (!(flags & EVFLAG_NOENV)
750	if (!enable_secure () && getenv ("LIBEV_METHODS"))	841	&& !enable_secure ()
		842	&& getenv ("LIBEV_FLAGS"))
751	methods = atoi (getenv ("LIBEV_METHODS"));	843	flags = atoi (getenv ("LIBEV_FLAGS"));
752	else
753	methods = EVMETHOD_ANY;
754		844
755	method = 0;	845	if (!(flags & 0x0000ffffUL))
756	#if EV_USE_WIN32	846	flags \|= ev_recommended_backends ();
757	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	847
		848	backend = 0;
		849	#if EV_USE_PORT
		850	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
758	#endif	851	#endif
759	#if EV_USE_KQUEUE	852	#if EV_USE_KQUEUE
760	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	853	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
761	#endif	854	#endif
762	#if EV_USE_EPOLL	855	#if EV_USE_EPOLL
763	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	856	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
764	#endif	857	#endif
765	#if EV_USE_POLL	858	#if EV_USE_POLL
766	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	859	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
767	#endif	860	#endif
768	#if EV_USE_SELECT	861	#if EV_USE_SELECT
769	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	862	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
770	#endif	863	#endif
771		864
772	ev_init (&sigev, sigcb);	865	ev_init (&sigev, sigcb);
773	ev_set_priority (&sigev, EV_MAXPRI);	866	ev_set_priority (&sigev, EV_MAXPRI);
774	}	867	}
775	}	868	}
776		869
777	void	870	static void
778	loop_destroy (EV_P)	871	loop_destroy (EV_P)
779	{	872	{
780	int i;	873	int i;
781		874
782	#if EV_USE_WIN32	875	#if EV_USE_PORT
783	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	876	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
784	#endif	877	#endif
785	#if EV_USE_KQUEUE	878	#if EV_USE_KQUEUE
786	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	879	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
787	#endif	880	#endif
788	#if EV_USE_EPOLL	881	#if EV_USE_EPOLL
789	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	882	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
790	#endif	883	#endif
791	#if EV_USE_POLL	884	#if EV_USE_POLL
792	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	885	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
793	#endif	886	#endif
794	#if EV_USE_SELECT	887	#if EV_USE_SELECT
795	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	888	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
796	#endif	889	#endif
797		890
798	for (i = NUMPRI; i--; )	891	for (i = NUMPRI; i--; )
799	array_free (pending, [i]);	892	array_free (pending, [i]);
800		893
801	/* have to use the microsoft-never-gets-it-right macro */	894	/* have to use the microsoft-never-gets-it-right macro */
802	array_free_microshit (fdchange);	895	array_free (fdchange, EMPTY0);
803	array_free_microshit (timer);	896	array_free (timer, EMPTY0);
804	array_free_microshit (periodic);	897	#if EV_PERIODICS
805	array_free_microshit (idle);	898	array_free (periodic, EMPTY0);
806	array_free_microshit (prepare);	899	#endif
807	array_free_microshit (check);	900	array_free (idle, EMPTY0);
		901	array_free (prepare, EMPTY0);
		902	array_free (check, EMPTY0);
808		903
809	method = 0;	904	backend = 0;
810	}	905	}
811		906
812	static void	907	static void
813	loop_fork (EV_P)	908	loop_fork (EV_P)
814	{	909	{
		910	#if EV_USE_PORT
		911	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		912	#endif
		913	#if EV_USE_KQUEUE
		914	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		915	#endif
815	#if EV_USE_EPOLL	916	#if EV_USE_EPOLL
816	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	917	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	918	#endif
821		919
822	if (ev_is_active (&sigev))	920	if (ev_is_active (&sigev))
823	{	921	{
824	/* default loop */	922	/* default loop */
…		…
837	postfork = 0;	935	postfork = 0;
838	}	936	}
839		937
840	#if EV_MULTIPLICITY	938	#if EV_MULTIPLICITY
841	struct ev_loop *	939	struct ev_loop *
842	ev_loop_new (int methods)	940	ev_loop_new (unsigned int flags)
843	{	941	{
844	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	942	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
845		943
846	memset (loop, 0, sizeof (struct ev_loop));	944	memset (loop, 0, sizeof (struct ev_loop));
847		945
848	loop_init (EV_A_ methods);	946	loop_init (EV_A_ flags);
849		947
850	if (ev_method (EV_A))	948	if (ev_backend (EV_A))
851	return loop;	949	return loop;
852		950
853	return 0;	951	return 0;
854	}	952	}
855		953
…		…
868		966
869	#endif	967	#endif
870		968
871	#if EV_MULTIPLICITY	969	#if EV_MULTIPLICITY
872	struct ev_loop *	970	struct ev_loop *
		971	ev_default_loop_init (unsigned int flags)
873	#else	972	#else
874	int	973	int
		974	ev_default_loop (unsigned int flags)
875	#endif	975	#endif
876	ev_default_loop (int methods)
877	{	976	{
878	if (sigpipe [0] == sigpipe [1])	977	if (sigpipe [0] == sigpipe [1])
879	if (pipe (sigpipe))	978	if (pipe (sigpipe))
880	return 0;	979	return 0;
881		980
882	if (!default_loop)	981	if (!ev_default_loop_ptr)
883	{	982	{
884	#if EV_MULTIPLICITY	983	#if EV_MULTIPLICITY
885	struct ev_loop *loop = default_loop = &default_loop_struct;	984	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
886	#else	985	#else
887	default_loop = 1;	986	ev_default_loop_ptr = 1;
888	#endif	987	#endif
889		988
890	loop_init (EV_A_ methods);	989	loop_init (EV_A_ flags);
891		990
892	if (ev_method (EV_A))	991	if (ev_backend (EV_A))
893	{	992	{
894	siginit (EV_A);	993	siginit (EV_A);
895		994
896	#ifndef WIN32	995	#ifndef _WIN32
897	ev_signal_init (&childev, childcb, SIGCHLD);	996	ev_signal_init (&childev, childcb, SIGCHLD);
898	ev_set_priority (&childev, EV_MAXPRI);	997	ev_set_priority (&childev, EV_MAXPRI);
899	ev_signal_start (EV_A_ &childev);	998	ev_signal_start (EV_A_ &childev);
900	ev_unref (EV_A); /* child watcher should not keep loop alive */	999	ev_unref (EV_A); /* child watcher should not keep loop alive */
901	#endif	1000	#endif
902	}	1001	}
903	else	1002	else
904	default_loop = 0;	1003	ev_default_loop_ptr = 0;
905	}	1004	}
906		1005
907	return default_loop;	1006	return ev_default_loop_ptr;
908	}	1007	}
909		1008
910	void	1009	void
911	ev_default_destroy (void)	1010	ev_default_destroy (void)
912	{	1011	{
913	#if EV_MULTIPLICITY	1012	#if EV_MULTIPLICITY
914	struct ev_loop *loop = default_loop;	1013	struct ev_loop *loop = ev_default_loop_ptr;
915	#endif	1014	#endif
916		1015
917	#ifndef WIN32	1016	#ifndef _WIN32
918	ev_ref (EV_A); /* child watcher */	1017	ev_ref (EV_A); /* child watcher */
919	ev_signal_stop (EV_A_ &childev);	1018	ev_signal_stop (EV_A_ &childev);
920	#endif	1019	#endif
921		1020
922	ev_ref (EV_A); /* signal watcher */	1021	ev_ref (EV_A); /* signal watcher */
…		…
930		1029
931	void	1030	void
932	ev_default_fork (void)	1031	ev_default_fork (void)
933	{	1032	{
934	#if EV_MULTIPLICITY	1033	#if EV_MULTIPLICITY
935	struct ev_loop *loop = default_loop;	1034	struct ev_loop *loop = ev_default_loop_ptr;
936	#endif	1035	#endif
937		1036
938	if (method)	1037	if (backend)
939	postfork = 1;	1038	postfork = 1;
940	}	1039	}
941		1040
942	/*****************************************************************************/	1041	/*****************************************************************************/
943		1042
…		…
951	return 1;	1050	return 1;
952		1051
953	return 0;	1052	return 0;
954	}	1053	}
955		1054
956	static void	1055	inline void
957	call_pending (EV_P)	1056	call_pending (EV_P)
958	{	1057	{
959	int pri;	1058	int pri;
960		1059
961	for (pri = NUMPRI; pri--; )	1060	for (pri = NUMPRI; pri--; )
962	while (pendingcnt [pri])	1061	while (pendingcnt [pri])
963	{	1062	{
964	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1063	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
965		1064
966	if (p->w)	1065	if (expect_true (p->w))
967	{	1066	{
968	p->w->pending = 0;	1067	p->w->pending = 0;
969	EV_CB_INVOKE (p->w, p->events);	1068	EV_CB_INVOKE (p->w, p->events);
970	}	1069	}
971	}	1070	}
972	}	1071	}
973		1072
974	static void	1073	inline void
975	timers_reify (EV_P)	1074	timers_reify (EV_P)
976	{	1075	{
977	while (timercnt && ((WT)timers [0])->at <= mn_now)	1076	while (timercnt && ((WT)timers [0])->at <= mn_now)
978	{	1077	{
979	struct ev_timer *w = timers [0];	1078	struct ev_timer *w = timers [0];
…		…
982		1081
983	/* first reschedule or stop timer */	1082	/* first reschedule or stop timer */
984	if (w->repeat)	1083	if (w->repeat)
985	{	1084	{
986	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1085	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1086
987	((WT)w)->at = mn_now + w->repeat;	1087	((WT)w)->at += w->repeat;
		1088	if (((WT)w)->at < mn_now)
		1089	((WT)w)->at = mn_now;
		1090
988	downheap ((WT *)timers, timercnt, 0);	1091	downheap ((WT *)timers, timercnt, 0);
989	}	1092	}
990	else	1093	else
991	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1094	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
992		1095
993	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1096	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
994	}	1097	}
995	}	1098	}
996		1099
997	static void	1100	#if EV_PERIODICS
		1101	inline void
998	periodics_reify (EV_P)	1102	periodics_reify (EV_P)
999	{	1103	{
1000	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1104	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1001	{	1105	{
1002	struct ev_periodic *w = periodics [0];	1106	struct ev_periodic *w = periodics [0];
…		…
1004	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1108	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1005		1109
1006	/* first reschedule or stop timer */	1110	/* first reschedule or stop timer */
1007	if (w->reschedule_cb)	1111	if (w->reschedule_cb)
1008	{	1112	{
1009	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1113	((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));	1114	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1012	downheap ((WT *)periodics, periodiccnt, 0);	1115	downheap ((WT *)periodics, periodiccnt, 0);
1013	}	1116	}
1014	else if (w->interval)	1117	else if (w->interval)
1015	{	1118	{
…		…
1042		1145
1043	/* now rebuild the heap */	1146	/* now rebuild the heap */
1044	for (i = periodiccnt >> 1; i--; )	1147	for (i = periodiccnt >> 1; i--; )
1045	downheap ((WT *)periodics, periodiccnt, i);	1148	downheap ((WT *)periodics, periodiccnt, i);
1046	}	1149	}
		1150	#endif
1047		1151
1048	inline int	1152	inline int
1049	time_update_monotonic (EV_P)	1153	time_update_monotonic (EV_P)
1050	{	1154	{
1051	mn_now = get_clock ();	1155	mn_now = get_clock ();
…		…
1061	ev_rt_now = ev_time ();	1165	ev_rt_now = ev_time ();
1062	return 1;	1166	return 1;
1063	}	1167	}
1064	}	1168	}
1065		1169
1066	static void	1170	inline void
1067	time_update (EV_P)	1171	time_update (EV_P)
1068	{	1172	{
1069	int i;	1173	int i;
1070		1174
1071	#if EV_USE_MONOTONIC	1175	#if EV_USE_MONOTONIC
…		…
1085	ev_rt_now = ev_time ();	1189	ev_rt_now = ev_time ();
1086	mn_now = get_clock ();	1190	mn_now = get_clock ();
1087	now_floor = mn_now;	1191	now_floor = mn_now;
1088	}	1192	}
1089		1193
		1194	# if EV_PERIODICS
1090	periodics_reschedule (EV_A);	1195	periodics_reschedule (EV_A);
		1196	# endif
1091	/* no timer adjustment, as the monotonic clock doesn't jump */	1197	/* no timer adjustment, as the monotonic clock doesn't jump */
1092	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1198	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1093	}	1199	}
1094	}	1200	}
1095	else	1201	else
…		…
1097	{	1203	{
1098	ev_rt_now = ev_time ();	1204	ev_rt_now = ev_time ();
1099		1205
1100	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1206	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1101	{	1207	{
		1208	#if EV_PERIODICS
1102	periodics_reschedule (EV_A);	1209	periodics_reschedule (EV_A);
		1210	#endif
1103		1211
1104	/* adjust timers. this is easy, as the offset is the same for all */	1212	/* adjust timers. this is easy, as the offset is the same for all */
1105	for (i = 0; i < timercnt; ++i)	1213	for (i = 0; i < timercnt; ++i)
1106	((WT)timers [i])->at += ev_rt_now - mn_now;	1214	((WT)timers [i])->at += ev_rt_now - mn_now;
1107	}	1215	}
…		…
1128	ev_loop (EV_P_ int flags)	1236	ev_loop (EV_P_ int flags)
1129	{	1237	{
1130	double block;	1238	double block;
1131	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1239	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
1132		1240
1133	do	1241	while (activecnt)
1134	{	1242	{
1135	/* queue check watchers (and execute them) */	1243	/* queue check watchers (and execute them) */
1136	if (expect_false (preparecnt))	1244	if (expect_false (preparecnt))
1137	{	1245	{
1138	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1246	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1166	{	1274	{
1167	block = MAX_BLOCKTIME;	1275	block = MAX_BLOCKTIME;
1168		1276
1169	if (timercnt)	1277	if (timercnt)
1170	{	1278	{
1171	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1279	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1172	if (block > to) block = to;	1280	if (block > to) block = to;
1173	}	1281	}
1174		1282
		1283	#if EV_PERIODICS
1175	if (periodiccnt)	1284	if (periodiccnt)
1176	{	1285	{
1177	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1286	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1178	if (block > to) block = to;	1287	if (block > to) block = to;
1179	}	1288	}
		1289	#endif
1180		1290
1181	if (block < 0.) block = 0.;	1291	if (expect_false (block < 0.)) block = 0.;
1182	}	1292	}
1183		1293
1184	method_poll (EV_A_ block);	1294	backend_poll (EV_A_ block);
1185		1295
1186	/* update ev_rt_now, do magic */	1296	/* update ev_rt_now, do magic */
1187	time_update (EV_A);	1297	time_update (EV_A);
1188		1298
1189	/* queue pending timers and reschedule them */	1299	/* queue pending timers and reschedule them */
1190	timers_reify (EV_A); /* relative timers called last */	1300	timers_reify (EV_A); /* relative timers called last */
		1301	#if EV_PERIODICS
1191	periodics_reify (EV_A); /* absolute timers called first */	1302	periodics_reify (EV_A); /* absolute timers called first */
		1303	#endif
1192		1304
1193	/* queue idle watchers unless io or timers are pending */	1305	/* queue idle watchers unless io or timers are pending */
1194	if (idlecnt && !any_pending (EV_A))	1306	if (idlecnt && !any_pending (EV_A))
1195	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1307	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1196		1308
1197	/* queue check watchers, to be executed first */	1309	/* queue check watchers, to be executed first */
1198	if (checkcnt)	1310	if (expect_false (checkcnt))
1199	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1311	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1200		1312
1201	call_pending (EV_A);	1313	call_pending (EV_A);
		1314
		1315	if (expect_false (loop_done))
		1316	break;
1202	}	1317	}
1203	while (activecnt && !loop_done);
1204		1318
1205	if (loop_done != 2)	1319	if (loop_done != 2)
1206	loop_done = 0;	1320	loop_done = 0;
1207	}	1321	}
1208		1322
…		…
1268	void	1382	void
1269	ev_io_start (EV_P_ struct ev_io *w)	1383	ev_io_start (EV_P_ struct ev_io *w)
1270	{	1384	{
1271	int fd = w->fd;	1385	int fd = w->fd;
1272		1386
1273	if (ev_is_active (w))	1387	if (expect_false (ev_is_active (w)))
1274	return;	1388	return;
1275		1389
1276	assert (("ev_io_start called with negative fd", fd >= 0));	1390	assert (("ev_io_start called with negative fd", fd >= 0));
1277		1391
1278	ev_start (EV_A_ (W)w, 1);	1392	ev_start (EV_A_ (W)w, 1);
…		…
1284		1398
1285	void	1399	void
1286	ev_io_stop (EV_P_ struct ev_io *w)	1400	ev_io_stop (EV_P_ struct ev_io *w)
1287	{	1401	{
1288	ev_clear_pending (EV_A_ (W)w);	1402	ev_clear_pending (EV_A_ (W)w);
1289	if (!ev_is_active (w))	1403	if (expect_false (!ev_is_active (w)))
1290	return;	1404	return;
		1405
		1406	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1291		1407
1292	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1408	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1293	ev_stop (EV_A_ (W)w);	1409	ev_stop (EV_A_ (W)w);
1294		1410
1295	fd_change (EV_A_ w->fd);	1411	fd_change (EV_A_ w->fd);
1296	}	1412	}
1297		1413
1298	void	1414	void
1299	ev_timer_start (EV_P_ struct ev_timer *w)	1415	ev_timer_start (EV_P_ struct ev_timer *w)
1300	{	1416	{
1301	if (ev_is_active (w))	1417	if (expect_false (ev_is_active (w)))
1302	return;	1418	return;
1303		1419
1304	((WT)w)->at += mn_now;	1420	((WT)w)->at += mn_now;
1305		1421
1306	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1422	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1307		1423
1308	ev_start (EV_A_ (W)w, ++timercnt);	1424	ev_start (EV_A_ (W)w, ++timercnt);
1309	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1425	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1310	timers [timercnt - 1] = w;	1426	timers [timercnt - 1] = w;
1311	upheap ((WT *)timers, timercnt - 1);	1427	upheap ((WT *)timers, timercnt - 1);
1312		1428
1313	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1429	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1314	}	1430	}
1315		1431
1316	void	1432	void
1317	ev_timer_stop (EV_P_ struct ev_timer *w)	1433	ev_timer_stop (EV_P_ struct ev_timer *w)
1318	{	1434	{
1319	ev_clear_pending (EV_A_ (W)w);	1435	ev_clear_pending (EV_A_ (W)w);
1320	if (!ev_is_active (w))	1436	if (expect_false (!ev_is_active (w)))
1321	return;	1437	return;
1322		1438
1323	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1439	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1324		1440
1325	if (((W)w)->active < timercnt--)	1441	if (expect_true (((W)w)->active < timercnt--))
1326	{	1442	{
1327	timers [((W)w)->active - 1] = timers [timercnt];	1443	timers [((W)w)->active - 1] = timers [timercnt];
1328	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1444	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1329	}	1445	}
1330		1446
1331	((WT)w)->at = w->repeat;	1447	((WT)w)->at -= mn_now;
1332		1448
1333	ev_stop (EV_A_ (W)w);	1449	ev_stop (EV_A_ (W)w);
1334	}	1450	}
1335		1451
1336	void	1452	void
1337	ev_timer_again (EV_P_ struct ev_timer *w)	1453	ev_timer_again (EV_P_ struct ev_timer *w)
1338	{	1454	{
1339	if (ev_is_active (w))	1455	if (ev_is_active (w))
1340	{	1456	{
1341	if (w->repeat)	1457	if (w->repeat)
		1458	{
		1459	((WT)w)->at = mn_now + w->repeat;
1342	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1460	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
		1461	}
1343	else	1462	else
1344	ev_timer_stop (EV_A_ w);	1463	ev_timer_stop (EV_A_ w);
1345	}	1464	}
1346	else if (w->repeat)	1465	else if (w->repeat)
		1466	{
		1467	w->at = w->repeat;
1347	ev_timer_start (EV_A_ w);	1468	ev_timer_start (EV_A_ w);
		1469	}
1348	}	1470	}
1349		1471
		1472	#if EV_PERIODICS
1350	void	1473	void
1351	ev_periodic_start (EV_P_ struct ev_periodic *w)	1474	ev_periodic_start (EV_P_ struct ev_periodic *w)
1352	{	1475	{
1353	if (ev_is_active (w))	1476	if (expect_false (ev_is_active (w)))
1354	return;	1477	return;
1355		1478
1356	if (w->reschedule_cb)	1479	if (w->reschedule_cb)
1357	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1480	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1358	else if (w->interval)	1481	else if (w->interval)
…		…
1361	/* this formula differs from the one in periodic_reify because we do not always round up */	1484	/* 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;	1485	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1363	}	1486	}
1364		1487
1365	ev_start (EV_A_ (W)w, ++periodiccnt);	1488	ev_start (EV_A_ (W)w, ++periodiccnt);
1366	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1489	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1367	periodics [periodiccnt - 1] = w;	1490	periodics [periodiccnt - 1] = w;
1368	upheap ((WT *)periodics, periodiccnt - 1);	1491	upheap ((WT *)periodics, periodiccnt - 1);
1369		1492
1370	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1493	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1371	}	1494	}
1372		1495
1373	void	1496	void
1374	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1497	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1375	{	1498	{
1376	ev_clear_pending (EV_A_ (W)w);	1499	ev_clear_pending (EV_A_ (W)w);
1377	if (!ev_is_active (w))	1500	if (expect_false (!ev_is_active (w)))
1378	return;	1501	return;
1379		1502
1380	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1503	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1381		1504
1382	if (((W)w)->active < periodiccnt--)	1505	if (expect_true (((W)w)->active < periodiccnt--))
1383	{	1506	{
1384	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1507	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1385	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1508	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1386	}	1509	}
1387		1510
1388	ev_stop (EV_A_ (W)w);	1511	ev_stop (EV_A_ (W)w);
1389	}	1512	}
1390		1513
…		…
1393	{	1516	{
1394	/* TODO: use adjustheap and recalculation */	1517	/* TODO: use adjustheap and recalculation */
1395	ev_periodic_stop (EV_A_ w);	1518	ev_periodic_stop (EV_A_ w);
1396	ev_periodic_start (EV_A_ w);	1519	ev_periodic_start (EV_A_ w);
1397	}	1520	}
		1521	#endif
1398		1522
1399	void	1523	void
1400	ev_idle_start (EV_P_ struct ev_idle *w)	1524	ev_idle_start (EV_P_ struct ev_idle *w)
1401	{	1525	{
1402	if (ev_is_active (w))	1526	if (expect_false (ev_is_active (w)))
1403	return;	1527	return;
1404		1528
1405	ev_start (EV_A_ (W)w, ++idlecnt);	1529	ev_start (EV_A_ (W)w, ++idlecnt);
1406	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));	1530	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1407	idles [idlecnt - 1] = w;	1531	idles [idlecnt - 1] = w;
1408	}	1532	}
1409		1533
1410	void	1534	void
1411	ev_idle_stop (EV_P_ struct ev_idle *w)	1535	ev_idle_stop (EV_P_ struct ev_idle *w)
1412	{	1536	{
1413	ev_clear_pending (EV_A_ (W)w);	1537	ev_clear_pending (EV_A_ (W)w);
1414	if (ev_is_active (w))	1538	if (expect_false (!ev_is_active (w)))
1415	return;	1539	return;
1416		1540
1417	idles [((W)w)->active - 1] = idles [--idlecnt];	1541	idles [((W)w)->active - 1] = idles [--idlecnt];
1418	ev_stop (EV_A_ (W)w);	1542	ev_stop (EV_A_ (W)w);
1419	}	1543	}
1420		1544
1421	void	1545	void
1422	ev_prepare_start (EV_P_ struct ev_prepare *w)	1546	ev_prepare_start (EV_P_ struct ev_prepare *w)
1423	{	1547	{
1424	if (ev_is_active (w))	1548	if (expect_false (ev_is_active (w)))
1425	return;	1549	return;
1426		1550
1427	ev_start (EV_A_ (W)w, ++preparecnt);	1551	ev_start (EV_A_ (W)w, ++preparecnt);
1428	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));	1552	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1429	prepares [preparecnt - 1] = w;	1553	prepares [preparecnt - 1] = w;
1430	}	1554	}
1431		1555
1432	void	1556	void
1433	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1557	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1434	{	1558	{
1435	ev_clear_pending (EV_A_ (W)w);	1559	ev_clear_pending (EV_A_ (W)w);
1436	if (ev_is_active (w))	1560	if (expect_false (!ev_is_active (w)))
1437	return;	1561	return;
1438		1562
1439	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1563	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1440	ev_stop (EV_A_ (W)w);	1564	ev_stop (EV_A_ (W)w);
1441	}	1565	}
1442		1566
1443	void	1567	void
1444	ev_check_start (EV_P_ struct ev_check *w)	1568	ev_check_start (EV_P_ struct ev_check *w)
1445	{	1569	{
1446	if (ev_is_active (w))	1570	if (expect_false (ev_is_active (w)))
1447	return;	1571	return;
1448		1572
1449	ev_start (EV_A_ (W)w, ++checkcnt);	1573	ev_start (EV_A_ (W)w, ++checkcnt);
1450	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));	1574	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1451	checks [checkcnt - 1] = w;	1575	checks [checkcnt - 1] = w;
1452	}	1576	}
1453		1577
1454	void	1578	void
1455	ev_check_stop (EV_P_ struct ev_check *w)	1579	ev_check_stop (EV_P_ struct ev_check *w)
1456	{	1580	{
1457	ev_clear_pending (EV_A_ (W)w);	1581	ev_clear_pending (EV_A_ (W)w);
1458	if (ev_is_active (w))	1582	if (expect_false (!ev_is_active (w)))
1459	return;	1583	return;
1460		1584
1461	checks [((W)w)->active - 1] = checks [--checkcnt];	1585	checks [((W)w)->active - 1] = checks [--checkcnt];
1462	ev_stop (EV_A_ (W)w);	1586	ev_stop (EV_A_ (W)w);
1463	}	1587	}
…		…
1468		1592
1469	void	1593	void
1470	ev_signal_start (EV_P_ struct ev_signal *w)	1594	ev_signal_start (EV_P_ struct ev_signal *w)
1471	{	1595	{
1472	#if EV_MULTIPLICITY	1596	#if EV_MULTIPLICITY
1473	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1597	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1474	#endif	1598	#endif
1475	if (ev_is_active (w))	1599	if (expect_false (ev_is_active (w)))
1476	return;	1600	return;
1477		1601
1478	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1602	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1479		1603
1480	ev_start (EV_A_ (W)w, 1);	1604	ev_start (EV_A_ (W)w, 1);
1481	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1605	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1482	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1606	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1483		1607
1484	if (!((WL)w)->next)	1608	if (!((WL)w)->next)
1485	{	1609	{
1486	#if WIN32	1610	#if _WIN32
1487	signal (w->signum, sighandler);	1611	signal (w->signum, sighandler);
1488	#else	1612	#else
1489	struct sigaction sa;	1613	struct sigaction sa;
1490	sa.sa_handler = sighandler;	1614	sa.sa_handler = sighandler;
1491	sigfillset (&sa.sa_mask);	1615	sigfillset (&sa.sa_mask);
…		…
1497		1621
1498	void	1622	void
1499	ev_signal_stop (EV_P_ struct ev_signal *w)	1623	ev_signal_stop (EV_P_ struct ev_signal *w)
1500	{	1624	{
1501	ev_clear_pending (EV_A_ (W)w);	1625	ev_clear_pending (EV_A_ (W)w);
1502	if (!ev_is_active (w))	1626	if (expect_false (!ev_is_active (w)))
1503	return;	1627	return;
1504		1628
1505	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1629	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1506	ev_stop (EV_A_ (W)w);	1630	ev_stop (EV_A_ (W)w);
1507		1631
…		…
1511		1635
1512	void	1636	void
1513	ev_child_start (EV_P_ struct ev_child *w)	1637	ev_child_start (EV_P_ struct ev_child *w)
1514	{	1638	{
1515	#if EV_MULTIPLICITY	1639	#if EV_MULTIPLICITY
1516	assert (("child watchers are only supported in the default loop", loop == default_loop));	1640	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1517	#endif	1641	#endif
1518	if (ev_is_active (w))	1642	if (expect_false (ev_is_active (w)))
1519	return;	1643	return;
1520		1644
1521	ev_start (EV_A_ (W)w, 1);	1645	ev_start (EV_A_ (W)w, 1);
1522	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1646	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1523	}	1647	}
1524		1648
1525	void	1649	void
1526	ev_child_stop (EV_P_ struct ev_child *w)	1650	ev_child_stop (EV_P_ struct ev_child *w)
1527	{	1651	{
1528	ev_clear_pending (EV_A_ (W)w);	1652	ev_clear_pending (EV_A_ (W)w);
1529	if (ev_is_active (w))	1653	if (expect_false (!ev_is_active (w)))
1530	return;	1654	return;
1531		1655
1532	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1656	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1533	ev_stop (EV_A_ (W)w);	1657	ev_stop (EV_A_ (W)w);
1534	}	1658	}
…		…
1571	void	1695	void
1572	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1696	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1573	{	1697	{
1574	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));	1698	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1575		1699
1576	if (!once)	1700	if (expect_false (!once))
		1701	{
1577	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1702	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1578	else	1703	return;
1579	{	1704	}
		1705
1580	once->cb = cb;	1706	once->cb = cb;
1581	once->arg = arg;	1707	once->arg = arg;
1582		1708
1583	ev_init (&once->io, once_cb_io);	1709	ev_init (&once->io, once_cb_io);
1584	if (fd >= 0)	1710	if (fd >= 0)
1585	{	1711	{
1586	ev_io_set (&once->io, fd, events);	1712	ev_io_set (&once->io, fd, events);
1587	ev_io_start (EV_A_ &once->io);	1713	ev_io_start (EV_A_ &once->io);
1588	}	1714	}
1589		1715
1590	ev_init (&once->to, once_cb_to);	1716	ev_init (&once->to, once_cb_to);
1591	if (timeout >= 0.)	1717	if (timeout >= 0.)
1592	{	1718	{
1593	ev_timer_set (&once->to, timeout, 0.);	1719	ev_timer_set (&once->to, timeout, 0.);
1594	ev_timer_start (EV_A_ &once->to);	1720	ev_timer_start (EV_A_ &once->to);
1595	}
1596	}	1721	}
1597	}	1722	}
1598		1723
		1724	#ifdef __cplusplus
		1725	}
		1726	#endif
		1727

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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 1.132 by root, Fri Nov 23 10:36:30 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 1.132 by root, Fri Nov 23 10:36:30 2007 UTC