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

Comparing libev/ev.c (file contents):
Revision 1.85 by root, Sat Nov 10 03:13:50 2007 UTC vs.
Revision 1.134 by root, Fri Nov 23 19:13:33 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
33		42
34	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
37	# endif	57	# endif
38		58
		59	# ifndef EV_USE_SELECT
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
40	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
41	# endif	65	# endif
42		66
		67	# ifndef EV_USE_POLL
43	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
44	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
45	# endif	73	# endif
46		74
		75	# ifndef EV_USE_EPOLL
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
49	# endif	81	# endif
50		82
		83	# ifndef EV_USE_KQUEUE
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
53	# endif	97	# endif
54		98
55	#endif	99	#endif
56		100
57	#include <math.h>	101	#include <math.h>
…		…
66	#include <sys/types.h>	110	#include <sys/types.h>
67	#include <time.h>	111	#include <time.h>
68		112
69	#include <signal.h>	113	#include <signal.h>
70		114
71	#ifndef WIN32	115	#ifndef _WIN32
72	# include <unistd.h>	116	# include <unistd.h>
73	# include <sys/time.h>	117	# include <sys/time.h>
74	# include <sys/wait.h>	118	# include <sys/wait.h>
		119	#else
		120	# define WIN32_LEAN_AND_MEAN
		121	# include <windows.h>
		122	# ifndef EV_SELECT_IS_WINSOCKET
		123	# define EV_SELECT_IS_WINSOCKET 1
75	#endif	124	# endif
		125	#endif
		126
76	/**/	127	/**/
77		128
78	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
79	# define EV_USE_MONOTONIC 1	130	# define EV_USE_MONOTONIC 0
		131	#endif
		132
		133	#ifndef EV_USE_REALTIME
		134	# define EV_USE_REALTIME 0
80	#endif	135	#endif
81		136
82	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
83	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
84	#endif	139	#endif
85		140
86	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
87	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	142	# ifdef _WIN32
		143	# define EV_USE_POLL 0
		144	# else
		145	# define EV_USE_POLL 1
		146	# endif
88	#endif	147	#endif
89		148
90	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
91	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
92	#endif	151	#endif
93		152
94	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
95	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
96	#endif	155	#endif
97		156
98	#ifndef EV_USE_WIN32
99	# ifdef WIN32
100	# define EV_USE_WIN32 0 /* it does not exist, use select */
101	# undef EV_USE_SELECT
102	# define EV_USE_SELECT 1
103	# else
104	# define EV_USE_WIN32 0
105	# endif
106	#endif
107
108	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
109	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
110	#endif	159	#endif
111		160
112	/**/	161	/**/
113		162
114	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
119	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
120	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
121	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
122	#endif	171	#endif
123		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
124	/**/	177	/**/
125		178
126	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	179	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
127	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	180	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
128	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	181	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
129	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	182	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
130		183
131	#ifdef EV_H	184	#ifdef EV_H
132	# include EV_H	185	# include EV_H
133	#else	186	#else
134	# include "ev.h"	187	# include "ev.h"
135	#endif	188	#endif
136		189
137	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
138	# define expect(expr,value) __builtin_expect ((expr),(value))	191	# define expect(expr,value) __builtin_expect ((expr),(value))
139	# define inline inline	192	# define inline static inline
140	#else	193	#else
141	# define expect(expr,value) (expr)	194	# define expect(expr,value) (expr)
142	# define inline static	195	# define inline static
143	#endif	196	#endif
144		197
…		…
146	#define expect_true(expr) expect ((expr) != 0, 1)	199	#define expect_true(expr) expect ((expr) != 0, 1)
147		200
148	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	201	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
149	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	202	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
150		203
		204	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		205	#define EMPTY2(a,b) /* used to suppress some warnings */
		206
151	typedef struct ev_watcher *W;	207	typedef struct ev_watcher *W;
152	typedef struct ev_watcher_list *WL;	208	typedef struct ev_watcher_list *WL;
153	typedef struct ev_watcher_time *WT;	209	typedef struct ev_watcher_time *WT;
154		210
155	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	211	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
156		212
		213	#ifdef _WIN32
157	#include "ev_win32.c"	214	# include "ev_win32.c"
		215	#endif
158		216
159	/*****************************************************************************/	217	/*****************************************************************************/
160		218
161	static void (syserr_cb)(const char msg);	219	static void (syserr_cb)(const char msg);
162		220
…		…
209	typedef struct	267	typedef struct
210	{	268	{
211	WL head;	269	WL head;
212	unsigned char events;	270	unsigned char events;
213	unsigned char reify;	271	unsigned char reify;
		272	#if EV_SELECT_IS_WINSOCKET
		273	SOCKET handle;
		274	#endif
214	} ANFD;	275	} ANFD;
215		276
216	typedef struct	277	typedef struct
217	{	278	{
218	W w;	279	W w;
…		…
221		282
222	#if EV_MULTIPLICITY	283	#if EV_MULTIPLICITY
223		284
224	struct ev_loop	285	struct ev_loop
225	{	286	{
		287	ev_tstamp ev_rt_now;
		288	#define ev_rt_now ((loop)->ev_rt_now)
226	#define VAR(name,decl) decl;	289	#define VAR(name,decl) decl;
227	#include "ev_vars.h"	290	#include "ev_vars.h"
228	#undef VAR	291	#undef VAR
229	};	292	};
230	#include "ev_wrap.h"	293	#include "ev_wrap.h"
231		294
232	struct ev_loop default_loop_struct;	295	static struct ev_loop default_loop_struct;
233	static struct ev_loop *default_loop;	296	struct ev_loop *ev_default_loop_ptr;
234		297
235	#else	298	#else
236		299
		300	ev_tstamp ev_rt_now;
237	#define VAR(name,decl) static decl;	301	#define VAR(name,decl) static decl;
238	#include "ev_vars.h"	302	#include "ev_vars.h"
239	#undef VAR	303	#undef VAR
240		304
241	static int default_loop;	305	static int ev_default_loop_ptr;
242		306
243	#endif	307	#endif
244		308
245	/*****************************************************************************/	309	/*****************************************************************************/
246		310
247	inline ev_tstamp	311	ev_tstamp
248	ev_time (void)	312	ev_time (void)
249	{	313	{
250	#if EV_USE_REALTIME	314	#if EV_USE_REALTIME
251	struct timespec ts;	315	struct timespec ts;
252	clock_gettime (CLOCK_REALTIME, &ts);	316	clock_gettime (CLOCK_REALTIME, &ts);
…		…
279	{	343	{
280	return ev_rt_now;	344	return ev_rt_now;
281	}	345	}
282	#endif	346	#endif
283		347
284	#define array_roundsize(type,n) ((n) \| 4 & ~3)	348	#define array_roundsize(type,n) (((n) \| 4) & ~3)
285		349
286	#define array_needsize(type,base,cur,cnt,init) \	350	#define array_needsize(type,base,cur,cnt,init) \
287	if (expect_false ((cnt) > cur)) \	351	if (expect_false ((cnt) > cur)) \
288	{ \	352	{ \
289	int newcnt = cur; \	353	int newcnt = cur; \
…		…
304	stem ## max = array_roundsize (stem ## cnt >> 1); \	368	stem ## max = array_roundsize (stem ## cnt >> 1); \
305	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\	369	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
306	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	370	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
307	}	371	}
308		372
309	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
310	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
311	#define array_free_microshit(stem) \
312	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
313
314	#define array_free(stem, idx) \	373	#define array_free(stem, idx) \
315	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	374	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
316		375
317	/*****************************************************************************/	376	/*****************************************************************************/
318		377
…		…
332	void	391	void
333	ev_feed_event (EV_P_ void *w, int revents)	392	ev_feed_event (EV_P_ void *w, int revents)
334	{	393	{
335	W w_ = (W)w;	394	W w_ = (W)w;
336		395
337	if (w_->pending)	396	if (expect_false (w_->pending))
338	{	397	{
339	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;	398	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
340	return;	399	return;
341	}	400	}
342		401
		402	if (expect_false (!w_->cb))
		403	return;
		404
343	w_->pending = ++pendingcnt [ABSPRI (w_)];	405	w_->pending = ++pendingcnt [ABSPRI (w_)];
344	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));	406	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
345	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;	407	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
346	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;	408	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
347	}	409	}
348		410
349	static void	411	static void
…		…
376	fd_event (EV_A_ fd, revents);	438	fd_event (EV_A_ fd, revents);
377	}	439	}
378		440
379	/*****************************************************************************/	441	/*****************************************************************************/
380		442
381	static void	443	inline void
382	fd_reify (EV_P)	444	fd_reify (EV_P)
383	{	445	{
384	int i;	446	int i;
385		447
386	for (i = 0; i < fdchangecnt; ++i)	448	for (i = 0; i < fdchangecnt; ++i)
…		…
392	int events = 0;	454	int events = 0;
393		455
394	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	456	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
395	events \|= w->events;	457	events \|= w->events;
396		458
		459	#if EV_SELECT_IS_WINSOCKET
		460	if (events)
		461	{
		462	unsigned long argp;
		463	anfd->handle = _get_osfhandle (fd);
		464	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		465	}
		466	#endif
		467
397	anfd->reify = 0;	468	anfd->reify = 0;
398		469
399	method_modify (EV_A_ fd, anfd->events, events);	470	backend_modify (EV_A_ fd, anfd->events, events);
400	anfd->events = events;	471	anfd->events = events;
401	}	472	}
402		473
403	fdchangecnt = 0;	474	fdchangecnt = 0;
404	}	475	}
405		476
406	static void	477	static void
407	fd_change (EV_P_ int fd)	478	fd_change (EV_P_ int fd)
408	{	479	{
409	if (anfds [fd].reify)	480	if (expect_false (anfds [fd].reify))
410	return;	481	return;
411		482
412	anfds [fd].reify = 1;	483	anfds [fd].reify = 1;
413		484
414	++fdchangecnt;	485	++fdchangecnt;
415	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	486	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
416	fdchanges [fdchangecnt - 1] = fd;	487	fdchanges [fdchangecnt - 1] = fd;
417	}	488	}
418		489
419	static void	490	static void
420	fd_kill (EV_P_ int fd)	491	fd_kill (EV_P_ int fd)
…		…
426	ev_io_stop (EV_A_ w);	497	ev_io_stop (EV_A_ w);
427	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	498	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
428	}	499	}
429	}	500	}
430		501
431	static int	502	inline int
432	fd_valid (int fd)	503	fd_valid (int fd)
433	{	504	{
434	#ifdef WIN32	505	#ifdef _WIN32
435	return !!win32_get_osfhandle (fd);	506	return _get_osfhandle (fd) != -1;
436	#else	507	#else
437	return fcntl (fd, F_GETFD) != -1;	508	return fcntl (fd, F_GETFD) != -1;
438	#endif	509	#endif
439	}	510	}
440		511
…		…
462	fd_kill (EV_A_ fd);	533	fd_kill (EV_A_ fd);
463	return;	534	return;
464	}	535	}
465	}	536	}
466		537
467	/* usually called after fork if method needs to re-arm all fds from scratch */	538	/* usually called after fork if backend needs to re-arm all fds from scratch */
468	static void	539	static void
469	fd_rearm_all (EV_P)	540	fd_rearm_all (EV_P)
470	{	541	{
471	int fd;	542	int fd;
472		543
…		…
521	heap [k] = w;	592	heap [k] = w;
522	((W)heap [k])->active = k + 1;	593	((W)heap [k])->active = k + 1;
523	}	594	}
524		595
525	inline void	596	inline void
526	adjustheap (WT *heap, int N, int k, ev_tstamp at)	597	adjustheap (WT *heap, int N, int k)
527	{	598	{
528	ev_tstamp old_at = heap [k]->at;	599	upheap (heap, k);
529	heap [k]->at = at;
530
531	if (old_at < at)
532	downheap (heap, N, k);	600	downheap (heap, N, k);
533	else
534	upheap (heap, k);
535	}	601	}
536		602
537	/*****************************************************************************/	603	/*****************************************************************************/
538		604
539	typedef struct	605	typedef struct
…		…
562	}	628	}
563		629
564	static void	630	static void
565	sighandler (int signum)	631	sighandler (int signum)
566	{	632	{
567	#if WIN32	633	#if _WIN32
568	signal (signum, sighandler);	634	signal (signum, sighandler);
569	#endif	635	#endif
570		636
571	signals [signum - 1].gotsig = 1;	637	signals [signum - 1].gotsig = 1;
572		638
573	if (!gotsig)	639	if (!gotsig)
574	{	640	{
575	int old_errno = errno;	641	int old_errno = errno;
576	gotsig = 1;	642	gotsig = 1;
577	#ifdef WIN32
578	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
579	#else
580	write (sigpipe [1], &signum, 1);	643	write (sigpipe [1], &signum, 1);
581	#endif
582	errno = old_errno;	644	errno = old_errno;
583	}	645	}
584	}	646	}
585		647
586	void	648	void
587	ev_feed_signal_event (EV_P_ int signum)	649	ev_feed_signal_event (EV_P_ int signum)
588	{	650	{
589	WL w;	651	WL w;
590		652
591	#if EV_MULTIPLICITY	653	#if EV_MULTIPLICITY
592	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	654	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
593	#endif	655	#endif
594		656
595	--signum;	657	--signum;
596		658
597	if (signum < 0 \|\| signum >= signalmax)	659	if (signum < 0 \|\| signum >= signalmax)
…		…
606	static void	668	static void
607	sigcb (EV_P_ struct ev_io *iow, int revents)	669	sigcb (EV_P_ struct ev_io *iow, int revents)
608	{	670	{
609	int signum;	671	int signum;
610		672
611	#ifdef WIN32
612	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
613	#else
614	read (sigpipe [0], &revents, 1);	673	read (sigpipe [0], &revents, 1);
615	#endif
616	gotsig = 0;	674	gotsig = 0;
617		675
618	for (signum = signalmax; signum--; )	676	for (signum = signalmax; signum--; )
619	if (signals [signum].gotsig)	677	if (signals [signum].gotsig)
620	ev_feed_signal_event (EV_A_ signum + 1);	678	ev_feed_signal_event (EV_A_ signum + 1);
621	}	679	}
622		680
623	static void	681	static void
		682	fd_intern (int fd)
		683	{
		684	#ifdef _WIN32
		685	int arg = 1;
		686	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		687	#else
		688	fcntl (fd, F_SETFD, FD_CLOEXEC);
		689	fcntl (fd, F_SETFL, O_NONBLOCK);
		690	#endif
		691	}
		692
		693	static void
624	siginit (EV_P)	694	siginit (EV_P)
625	{	695	{
626	#ifndef WIN32	696	fd_intern (sigpipe [0]);
627	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	697	fd_intern (sigpipe [1]);
628	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
629
630	/* rather than sort out wether we really need nb, set it */
631	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
632	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
633	#endif
634		698
635	ev_io_set (&sigev, sigpipe [0], EV_READ);	699	ev_io_set (&sigev, sigpipe [0], EV_READ);
636	ev_io_start (EV_A_ &sigev);	700	ev_io_start (EV_A_ &sigev);
637	ev_unref (EV_A); /* child watcher should not keep loop alive */	701	ev_unref (EV_A); /* child watcher should not keep loop alive */
638	}	702	}
639		703
640	/*****************************************************************************/	704	/*****************************************************************************/
641		705
642	static struct ev_child *childs [PID_HASHSIZE];	706	static struct ev_child *childs [PID_HASHSIZE];
643		707
644	#ifndef WIN32	708	#ifndef _WIN32
645		709
646	static struct ev_signal childev;	710	static struct ev_signal childev;
647		711
648	#ifndef WCONTINUED	712	#ifndef WCONTINUED
649	# define WCONTINUED 0	713	# define WCONTINUED 0
…		…
670	int pid, status;	734	int pid, status;
671		735
672	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	736	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
673	{	737	{
674	/* make sure we are called again until all childs have been reaped */	738	/* make sure we are called again until all childs have been reaped */
		739	/* we need to do it this way so that the callback gets called before we continue */
675	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	740	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
676		741
677	child_reap (EV_A_ sw, pid, pid, status);	742	child_reap (EV_A_ sw, pid, pid, status);
678	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	743	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
679	}	744	}
680	}	745	}
681		746
682	#endif	747	#endif
683		748
684	/*****************************************************************************/	749	/*****************************************************************************/
685		750
		751	#if EV_USE_PORT
		752	# include "ev_port.c"
		753	#endif
686	#if EV_USE_KQUEUE	754	#if EV_USE_KQUEUE
687	# include "ev_kqueue.c"	755	# include "ev_kqueue.c"
688	#endif	756	#endif
689	#if EV_USE_EPOLL	757	#if EV_USE_EPOLL
690	# include "ev_epoll.c"	758	# include "ev_epoll.c"
…		…
710		778
711	/* return true if we are running with elevated privileges and should ignore env variables */	779	/* return true if we are running with elevated privileges and should ignore env variables */
712	static int	780	static int
713	enable_secure (void)	781	enable_secure (void)
714	{	782	{
715	#ifdef WIN32	783	#ifdef _WIN32
716	return 0;	784	return 0;
717	#else	785	#else
718	return getuid () != geteuid ()	786	return getuid () != geteuid ()
719	\|\| getgid () != getegid ();	787	\|\| getgid () != getegid ();
720	#endif	788	#endif
721	}	789	}
722		790
723	int	791	unsigned int
724	ev_method (EV_P)	792	ev_supported_backends (void)
725	{	793	{
726	return method;	794	unsigned int flags = 0;
727	}
728		795
729	static void	796	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
730	loop_init (EV_P_ int methods)	797	if (EV_USE_KQUEUE) flags \|= EVBACKEND_KQUEUE;
		798	if (EV_USE_EPOLL ) flags \|= EVBACKEND_EPOLL;
		799	if (EV_USE_POLL ) flags \|= EVBACKEND_POLL;
		800	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
		801
		802	return flags;
		803	}
		804
		805	unsigned int
		806	ev_recommended_backends (void)
731	{	807	{
732	if (!method)	808	unsigned int flags = ev_supported_backends ();
		809
		810	#ifndef __NetBSD__
		811	/* kqueue is borked on everything but netbsd apparently */
		812	/* it usually doesn't work correctly on anything but sockets and pipes */
		813	flags &= ~EVBACKEND_KQUEUE;
		814	#endif
		815	#ifdef __APPLE__
		816	// flags &= ~EVBACKEND_KQUEUE; for documentation
		817	flags &= ~EVBACKEND_POLL;
		818	#endif
		819
		820	return flags;
		821	}
		822
		823	unsigned int
		824	ev_embeddable_backends (void)
		825	{
		826	return EVBACKEND_EPOLL
		827	\| EVBACKEND_KQUEUE
		828	\| EVBACKEND_PORT;
		829	}
		830
		831	unsigned int
		832	ev_backend (EV_P)
		833	{
		834	return backend;
		835	}
		836
		837	static void
		838	loop_init (EV_P_ unsigned int flags)
		839	{
		840	if (!backend)
733	{	841	{
734	#if EV_USE_MONOTONIC	842	#if EV_USE_MONOTONIC
735	{	843	{
736	struct timespec ts;	844	struct timespec ts;
737	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	845	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
742	ev_rt_now = ev_time ();	850	ev_rt_now = ev_time ();
743	mn_now = get_clock ();	851	mn_now = get_clock ();
744	now_floor = mn_now;	852	now_floor = mn_now;
745	rtmn_diff = ev_rt_now - mn_now;	853	rtmn_diff = ev_rt_now - mn_now;
746		854
747	if (methods == EVMETHOD_AUTO)	855	if (!(flags & EVFLAG_NOENV)
748	if (!enable_secure () && getenv ("LIBEV_METHODS"))	856	&& !enable_secure ()
		857	&& getenv ("LIBEV_FLAGS"))
749	methods = atoi (getenv ("LIBEV_METHODS"));	858	flags = atoi (getenv ("LIBEV_FLAGS"));
750	else
751	methods = EVMETHOD_ANY;
752		859
753	method = 0;	860	if (!(flags & 0x0000ffffUL))
754	#if EV_USE_WIN32	861	flags \|= ev_recommended_backends ();
755	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	862
		863	backend = 0;
		864	#if EV_USE_PORT
		865	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
756	#endif	866	#endif
757	#if EV_USE_KQUEUE	867	#if EV_USE_KQUEUE
758	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	868	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
759	#endif	869	#endif
760	#if EV_USE_EPOLL	870	#if EV_USE_EPOLL
761	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	871	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
762	#endif	872	#endif
763	#if EV_USE_POLL	873	#if EV_USE_POLL
764	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	874	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
765	#endif	875	#endif
766	#if EV_USE_SELECT	876	#if EV_USE_SELECT
767	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	877	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
768	#endif	878	#endif
769		879
770	ev_init (&sigev, sigcb);	880	ev_init (&sigev, sigcb);
771	ev_set_priority (&sigev, EV_MAXPRI);	881	ev_set_priority (&sigev, EV_MAXPRI);
772	}	882	}
773	}	883	}
774		884
775	void	885	static void
776	loop_destroy (EV_P)	886	loop_destroy (EV_P)
777	{	887	{
778	int i;	888	int i;
779		889
780	#if EV_USE_WIN32	890	#if EV_USE_PORT
781	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	891	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
782	#endif	892	#endif
783	#if EV_USE_KQUEUE	893	#if EV_USE_KQUEUE
784	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	894	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
785	#endif	895	#endif
786	#if EV_USE_EPOLL	896	#if EV_USE_EPOLL
787	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	897	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
788	#endif	898	#endif
789	#if EV_USE_POLL	899	#if EV_USE_POLL
790	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	900	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
791	#endif	901	#endif
792	#if EV_USE_SELECT	902	#if EV_USE_SELECT
793	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	903	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
794	#endif	904	#endif
795		905
796	for (i = NUMPRI; i--; )	906	for (i = NUMPRI; i--; )
797	array_free (pending, [i]);	907	array_free (pending, [i]);
798		908
799	/* have to use the microsoft-never-gets-it-right macro */	909	/* have to use the microsoft-never-gets-it-right macro */
800	array_free_microshit (fdchange);	910	array_free (fdchange, EMPTY0);
801	array_free_microshit (timer);	911	array_free (timer, EMPTY0);
802	array_free_microshit (periodic);	912	#if EV_PERIODICS
803	array_free_microshit (idle);	913	array_free (periodic, EMPTY0);
804	array_free_microshit (prepare);	914	#endif
805	array_free_microshit (check);	915	array_free (idle, EMPTY0);
		916	array_free (prepare, EMPTY0);
		917	array_free (check, EMPTY0);
806		918
807	method = 0;	919	backend = 0;
808	}	920	}
809		921
810	static void	922	static void
811	loop_fork (EV_P)	923	loop_fork (EV_P)
812	{	924	{
		925	#if EV_USE_PORT
		926	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		927	#endif
		928	#if EV_USE_KQUEUE
		929	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		930	#endif
813	#if EV_USE_EPOLL	931	#if EV_USE_EPOLL
814	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	932	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
815	#endif
816	#if EV_USE_KQUEUE
817	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
818	#endif	933	#endif
819		934
820	if (ev_is_active (&sigev))	935	if (ev_is_active (&sigev))
821	{	936	{
822	/* default loop */	937	/* default loop */
…		…
835	postfork = 0;	950	postfork = 0;
836	}	951	}
837		952
838	#if EV_MULTIPLICITY	953	#if EV_MULTIPLICITY
839	struct ev_loop *	954	struct ev_loop *
840	ev_loop_new (int methods)	955	ev_loop_new (unsigned int flags)
841	{	956	{
842	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	957	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
843		958
844	memset (loop, 0, sizeof (struct ev_loop));	959	memset (loop, 0, sizeof (struct ev_loop));
845		960
846	loop_init (EV_A_ methods);	961	loop_init (EV_A_ flags);
847		962
848	if (ev_method (EV_A))	963	if (ev_backend (EV_A))
849	return loop;	964	return loop;
850		965
851	return 0;	966	return 0;
852	}	967	}
853		968
…		…
866		981
867	#endif	982	#endif
868		983
869	#if EV_MULTIPLICITY	984	#if EV_MULTIPLICITY
870	struct ev_loop *	985	struct ev_loop *
		986	ev_default_loop_init (unsigned int flags)
871	#else	987	#else
872	int	988	int
		989	ev_default_loop (unsigned int flags)
873	#endif	990	#endif
874	ev_default_loop (int methods)
875	{	991	{
876	if (sigpipe [0] == sigpipe [1])	992	if (sigpipe [0] == sigpipe [1])
877	if (pipe (sigpipe))	993	if (pipe (sigpipe))
878	return 0;	994	return 0;
879		995
880	if (!default_loop)	996	if (!ev_default_loop_ptr)
881	{	997	{
882	#if EV_MULTIPLICITY	998	#if EV_MULTIPLICITY
883	struct ev_loop *loop = default_loop = &default_loop_struct;	999	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
884	#else	1000	#else
885	default_loop = 1;	1001	ev_default_loop_ptr = 1;
886	#endif	1002	#endif
887		1003
888	loop_init (EV_A_ methods);	1004	loop_init (EV_A_ flags);
889		1005
890	if (ev_method (EV_A))	1006	if (ev_backend (EV_A))
891	{	1007	{
892	siginit (EV_A);	1008	siginit (EV_A);
893		1009
894	#ifndef WIN32	1010	#ifndef _WIN32
895	ev_signal_init (&childev, childcb, SIGCHLD);	1011	ev_signal_init (&childev, childcb, SIGCHLD);
896	ev_set_priority (&childev, EV_MAXPRI);	1012	ev_set_priority (&childev, EV_MAXPRI);
897	ev_signal_start (EV_A_ &childev);	1013	ev_signal_start (EV_A_ &childev);
898	ev_unref (EV_A); /* child watcher should not keep loop alive */	1014	ev_unref (EV_A); /* child watcher should not keep loop alive */
899	#endif	1015	#endif
900	}	1016	}
901	else	1017	else
902	default_loop = 0;	1018	ev_default_loop_ptr = 0;
903	}	1019	}
904		1020
905	return default_loop;	1021	return ev_default_loop_ptr;
906	}	1022	}
907		1023
908	void	1024	void
909	ev_default_destroy (void)	1025	ev_default_destroy (void)
910	{	1026	{
911	#if EV_MULTIPLICITY	1027	#if EV_MULTIPLICITY
912	struct ev_loop *loop = default_loop;	1028	struct ev_loop *loop = ev_default_loop_ptr;
913	#endif	1029	#endif
914		1030
915	#ifndef WIN32	1031	#ifndef _WIN32
916	ev_ref (EV_A); /* child watcher */	1032	ev_ref (EV_A); /* child watcher */
917	ev_signal_stop (EV_A_ &childev);	1033	ev_signal_stop (EV_A_ &childev);
918	#endif	1034	#endif
919		1035
920	ev_ref (EV_A); /* signal watcher */	1036	ev_ref (EV_A); /* signal watcher */
…		…
928		1044
929	void	1045	void
930	ev_default_fork (void)	1046	ev_default_fork (void)
931	{	1047	{
932	#if EV_MULTIPLICITY	1048	#if EV_MULTIPLICITY
933	struct ev_loop *loop = default_loop;	1049	struct ev_loop *loop = ev_default_loop_ptr;
934	#endif	1050	#endif
935		1051
936	if (method)	1052	if (backend)
937	postfork = 1;	1053	postfork = 1;
938	}	1054	}
939		1055
940	/*****************************************************************************/	1056	/*****************************************************************************/
941		1057
…		…
949	return 1;	1065	return 1;
950		1066
951	return 0;	1067	return 0;
952	}	1068	}
953		1069
954	static void	1070	inline void
955	call_pending (EV_P)	1071	call_pending (EV_P)
956	{	1072	{
957	int pri;	1073	int pri;
958		1074
959	for (pri = NUMPRI; pri--; )	1075	for (pri = NUMPRI; pri--; )
960	while (pendingcnt [pri])	1076	while (pendingcnt [pri])
961	{	1077	{
962	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1078	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
963		1079
964	if (p->w)	1080	if (expect_true (p->w))
965	{	1081	{
966	p->w->pending = 0;	1082	p->w->pending = 0;
967	EV_CB_INVOKE (p->w, p->events);	1083	EV_CB_INVOKE (p->w, p->events);
968	}	1084	}
969	}	1085	}
970	}	1086	}
971		1087
972	static void	1088	inline void
973	timers_reify (EV_P)	1089	timers_reify (EV_P)
974	{	1090	{
975	while (timercnt && ((WT)timers [0])->at <= mn_now)	1091	while (timercnt && ((WT)timers [0])->at <= mn_now)
976	{	1092	{
977	struct ev_timer *w = timers [0];	1093	struct ev_timer *w = timers [0];
…		…
980		1096
981	/* first reschedule or stop timer */	1097	/* first reschedule or stop timer */
982	if (w->repeat)	1098	if (w->repeat)
983	{	1099	{
984	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1100	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1101
985	((WT)w)->at = mn_now + w->repeat;	1102	((WT)w)->at += w->repeat;
		1103	if (((WT)w)->at < mn_now)
		1104	((WT)w)->at = mn_now;
		1105
986	downheap ((WT *)timers, timercnt, 0);	1106	downheap ((WT *)timers, timercnt, 0);
987	}	1107	}
988	else	1108	else
989	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1109	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
990		1110
991	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1111	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
992	}	1112	}
993	}	1113	}
994		1114
995	static void	1115	#if EV_PERIODICS
		1116	inline void
996	periodics_reify (EV_P)	1117	periodics_reify (EV_P)
997	{	1118	{
998	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1119	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
999	{	1120	{
1000	struct ev_periodic *w = periodics [0];	1121	struct ev_periodic *w = periodics [0];
…		…
1002	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1123	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1003		1124
1004	/* first reschedule or stop timer */	1125	/* first reschedule or stop timer */
1005	if (w->reschedule_cb)	1126	if (w->reschedule_cb)
1006	{	1127	{
1007	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1128	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1008
1009	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1129	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1010	downheap ((WT *)periodics, periodiccnt, 0);	1130	downheap ((WT *)periodics, periodiccnt, 0);
1011	}	1131	}
1012	else if (w->interval)	1132	else if (w->interval)
1013	{	1133	{
…		…
1040		1160
1041	/* now rebuild the heap */	1161	/* now rebuild the heap */
1042	for (i = periodiccnt >> 1; i--; )	1162	for (i = periodiccnt >> 1; i--; )
1043	downheap ((WT *)periodics, periodiccnt, i);	1163	downheap ((WT *)periodics, periodiccnt, i);
1044	}	1164	}
		1165	#endif
1045		1166
1046	inline int	1167	inline int
1047	time_update_monotonic (EV_P)	1168	time_update_monotonic (EV_P)
1048	{	1169	{
1049	mn_now = get_clock ();	1170	mn_now = get_clock ();
…		…
1059	ev_rt_now = ev_time ();	1180	ev_rt_now = ev_time ();
1060	return 1;	1181	return 1;
1061	}	1182	}
1062	}	1183	}
1063		1184
1064	static void	1185	inline void
1065	time_update (EV_P)	1186	time_update (EV_P)
1066	{	1187	{
1067	int i;	1188	int i;
1068		1189
1069	#if EV_USE_MONOTONIC	1190	#if EV_USE_MONOTONIC
…		…
1083	ev_rt_now = ev_time ();	1204	ev_rt_now = ev_time ();
1084	mn_now = get_clock ();	1205	mn_now = get_clock ();
1085	now_floor = mn_now;	1206	now_floor = mn_now;
1086	}	1207	}
1087		1208
		1209	# if EV_PERIODICS
1088	periodics_reschedule (EV_A);	1210	periodics_reschedule (EV_A);
		1211	# endif
1089	/* no timer adjustment, as the monotonic clock doesn't jump */	1212	/* no timer adjustment, as the monotonic clock doesn't jump */
1090	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1213	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1091	}	1214	}
1092	}	1215	}
1093	else	1216	else
…		…
1095	{	1218	{
1096	ev_rt_now = ev_time ();	1219	ev_rt_now = ev_time ();
1097		1220
1098	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1221	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1099	{	1222	{
		1223	#if EV_PERIODICS
1100	periodics_reschedule (EV_A);	1224	periodics_reschedule (EV_A);
		1225	#endif
1101		1226
1102	/* adjust timers. this is easy, as the offset is the same for all */	1227	/* adjust timers. this is easy, as the offset is the same for all */
1103	for (i = 0; i < timercnt; ++i)	1228	for (i = 0; i < timercnt; ++i)
1104	((WT)timers [i])->at += ev_rt_now - mn_now;	1229	((WT)timers [i])->at += ev_rt_now - mn_now;
1105	}	1230	}
…		…
1126	ev_loop (EV_P_ int flags)	1251	ev_loop (EV_P_ int flags)
1127	{	1252	{
1128	double block;	1253	double block;
1129	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1254	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
1130		1255
1131	do	1256	while (activecnt)
1132	{	1257	{
1133	/* queue check watchers (and execute them) */	1258	/* queue check watchers (and execute them) */
1134	if (expect_false (preparecnt))	1259	if (expect_false (preparecnt))
1135	{	1260	{
1136	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1261	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1164	{	1289	{
1165	block = MAX_BLOCKTIME;	1290	block = MAX_BLOCKTIME;
1166		1291
1167	if (timercnt)	1292	if (timercnt)
1168	{	1293	{
1169	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1294	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1170	if (block > to) block = to;	1295	if (block > to) block = to;
1171	}	1296	}
1172		1297
		1298	#if EV_PERIODICS
1173	if (periodiccnt)	1299	if (periodiccnt)
1174	{	1300	{
1175	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1301	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1176	if (block > to) block = to;	1302	if (block > to) block = to;
1177	}	1303	}
		1304	#endif
1178		1305
1179	if (block < 0.) block = 0.;	1306	if (expect_false (block < 0.)) block = 0.;
1180	}	1307	}
1181		1308
1182	method_poll (EV_A_ block);	1309	backend_poll (EV_A_ block);
1183		1310
1184	/* update ev_rt_now, do magic */	1311	/* update ev_rt_now, do magic */
1185	time_update (EV_A);	1312	time_update (EV_A);
1186		1313
1187	/* queue pending timers and reschedule them */	1314	/* queue pending timers and reschedule them */
1188	timers_reify (EV_A); /* relative timers called last */	1315	timers_reify (EV_A); /* relative timers called last */
		1316	#if EV_PERIODICS
1189	periodics_reify (EV_A); /* absolute timers called first */	1317	periodics_reify (EV_A); /* absolute timers called first */
		1318	#endif
1190		1319
1191	/* queue idle watchers unless io or timers are pending */	1320	/* queue idle watchers unless io or timers are pending */
1192	if (idlecnt && !any_pending (EV_A))	1321	if (idlecnt && !any_pending (EV_A))
1193	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1322	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1194		1323
1195	/* queue check watchers, to be executed first */	1324	/* queue check watchers, to be executed first */
1196	if (checkcnt)	1325	if (expect_false (checkcnt))
1197	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1326	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1198		1327
1199	call_pending (EV_A);	1328	call_pending (EV_A);
		1329
		1330	if (expect_false (loop_done))
		1331	break;
1200	}	1332	}
1201	while (activecnt && !loop_done);
1202		1333
1203	if (loop_done != 2)	1334	if (loop_done != 2)
1204	loop_done = 0;	1335	loop_done = 0;
1205	}	1336	}
1206		1337
…		…
1266	void	1397	void
1267	ev_io_start (EV_P_ struct ev_io *w)	1398	ev_io_start (EV_P_ struct ev_io *w)
1268	{	1399	{
1269	int fd = w->fd;	1400	int fd = w->fd;
1270		1401
1271	if (ev_is_active (w))	1402	if (expect_false (ev_is_active (w)))
1272	return;	1403	return;
1273		1404
1274	assert (("ev_io_start called with negative fd", fd >= 0));	1405	assert (("ev_io_start called with negative fd", fd >= 0));
1275		1406
1276	ev_start (EV_A_ (W)w, 1);	1407	ev_start (EV_A_ (W)w, 1);
…		…
1282		1413
1283	void	1414	void
1284	ev_io_stop (EV_P_ struct ev_io *w)	1415	ev_io_stop (EV_P_ struct ev_io *w)
1285	{	1416	{
1286	ev_clear_pending (EV_A_ (W)w);	1417	ev_clear_pending (EV_A_ (W)w);
1287	if (!ev_is_active (w))	1418	if (expect_false (!ev_is_active (w)))
1288	return;	1419	return;
		1420
		1421	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1289		1422
1290	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1423	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1291	ev_stop (EV_A_ (W)w);	1424	ev_stop (EV_A_ (W)w);
1292		1425
1293	fd_change (EV_A_ w->fd);	1426	fd_change (EV_A_ w->fd);
1294	}	1427	}
1295		1428
1296	void	1429	void
1297	ev_timer_start (EV_P_ struct ev_timer *w)	1430	ev_timer_start (EV_P_ struct ev_timer *w)
1298	{	1431	{
1299	if (ev_is_active (w))	1432	if (expect_false (ev_is_active (w)))
1300	return;	1433	return;
1301		1434
1302	((WT)w)->at += mn_now;	1435	((WT)w)->at += mn_now;
1303		1436
1304	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1437	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1305		1438
1306	ev_start (EV_A_ (W)w, ++timercnt);	1439	ev_start (EV_A_ (W)w, ++timercnt);
1307	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1440	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1308	timers [timercnt - 1] = w;	1441	timers [timercnt - 1] = w;
1309	upheap ((WT *)timers, timercnt - 1);	1442	upheap ((WT *)timers, timercnt - 1);
1310		1443
1311	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1444	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1312	}	1445	}
1313		1446
1314	void	1447	void
1315	ev_timer_stop (EV_P_ struct ev_timer *w)	1448	ev_timer_stop (EV_P_ struct ev_timer *w)
1316	{	1449	{
1317	ev_clear_pending (EV_A_ (W)w);	1450	ev_clear_pending (EV_A_ (W)w);
1318	if (!ev_is_active (w))	1451	if (expect_false (!ev_is_active (w)))
1319	return;	1452	return;
1320		1453
1321	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1454	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1322		1455
1323	if (((W)w)->active < timercnt--)	1456	if (expect_true (((W)w)->active < timercnt--))
1324	{	1457	{
1325	timers [((W)w)->active - 1] = timers [timercnt];	1458	timers [((W)w)->active - 1] = timers [timercnt];
1326	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1459	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1327	}	1460	}
1328		1461
1329	((WT)w)->at = w->repeat;	1462	((WT)w)->at -= mn_now;
1330		1463
1331	ev_stop (EV_A_ (W)w);	1464	ev_stop (EV_A_ (W)w);
1332	}	1465	}
1333		1466
1334	void	1467	void
1335	ev_timer_again (EV_P_ struct ev_timer *w)	1468	ev_timer_again (EV_P_ struct ev_timer *w)
1336	{	1469	{
1337	if (ev_is_active (w))	1470	if (ev_is_active (w))
1338	{	1471	{
1339	if (w->repeat)	1472	if (w->repeat)
		1473	{
		1474	((WT)w)->at = mn_now + w->repeat;
1340	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1475	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
		1476	}
1341	else	1477	else
1342	ev_timer_stop (EV_A_ w);	1478	ev_timer_stop (EV_A_ w);
1343	}	1479	}
1344	else if (w->repeat)	1480	else if (w->repeat)
		1481	{
		1482	w->at = w->repeat;
1345	ev_timer_start (EV_A_ w);	1483	ev_timer_start (EV_A_ w);
		1484	}
1346	}	1485	}
1347		1486
		1487	#if EV_PERIODICS
1348	void	1488	void
1349	ev_periodic_start (EV_P_ struct ev_periodic *w)	1489	ev_periodic_start (EV_P_ struct ev_periodic *w)
1350	{	1490	{
1351	if (ev_is_active (w))	1491	if (expect_false (ev_is_active (w)))
1352	return;	1492	return;
1353		1493
1354	if (w->reschedule_cb)	1494	if (w->reschedule_cb)
1355	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1495	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1356	else if (w->interval)	1496	else if (w->interval)
…		…
1359	/* this formula differs from the one in periodic_reify because we do not always round up */	1499	/* this formula differs from the one in periodic_reify because we do not always round up */
1360	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1500	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1361	}	1501	}
1362		1502
1363	ev_start (EV_A_ (W)w, ++periodiccnt);	1503	ev_start (EV_A_ (W)w, ++periodiccnt);
1364	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1504	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1365	periodics [periodiccnt - 1] = w;	1505	periodics [periodiccnt - 1] = w;
1366	upheap ((WT *)periodics, periodiccnt - 1);	1506	upheap ((WT *)periodics, periodiccnt - 1);
1367		1507
1368	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1508	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1369	}	1509	}
1370		1510
1371	void	1511	void
1372	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1512	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1373	{	1513	{
1374	ev_clear_pending (EV_A_ (W)w);	1514	ev_clear_pending (EV_A_ (W)w);
1375	if (!ev_is_active (w))	1515	if (expect_false (!ev_is_active (w)))
1376	return;	1516	return;
1377		1517
1378	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1518	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1379		1519
1380	if (((W)w)->active < periodiccnt--)	1520	if (expect_true (((W)w)->active < periodiccnt--))
1381	{	1521	{
1382	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1522	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1383	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1523	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1384	}	1524	}
1385		1525
1386	ev_stop (EV_A_ (W)w);	1526	ev_stop (EV_A_ (W)w);
1387	}	1527	}
1388		1528
…		…
1391	{	1531	{
1392	/* TODO: use adjustheap and recalculation */	1532	/* TODO: use adjustheap and recalculation */
1393	ev_periodic_stop (EV_A_ w);	1533	ev_periodic_stop (EV_A_ w);
1394	ev_periodic_start (EV_A_ w);	1534	ev_periodic_start (EV_A_ w);
1395	}	1535	}
		1536	#endif
1396		1537
1397	void	1538	void
1398	ev_idle_start (EV_P_ struct ev_idle *w)	1539	ev_idle_start (EV_P_ struct ev_idle *w)
1399	{	1540	{
1400	if (ev_is_active (w))	1541	if (expect_false (ev_is_active (w)))
1401	return;	1542	return;
1402		1543
1403	ev_start (EV_A_ (W)w, ++idlecnt);	1544	ev_start (EV_A_ (W)w, ++idlecnt);
1404	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));	1545	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1405	idles [idlecnt - 1] = w;	1546	idles [idlecnt - 1] = w;
1406	}	1547	}
1407		1548
1408	void	1549	void
1409	ev_idle_stop (EV_P_ struct ev_idle *w)	1550	ev_idle_stop (EV_P_ struct ev_idle *w)
1410	{	1551	{
1411	ev_clear_pending (EV_A_ (W)w);	1552	ev_clear_pending (EV_A_ (W)w);
1412	if (ev_is_active (w))	1553	if (expect_false (!ev_is_active (w)))
1413	return;	1554	return;
1414		1555
1415	idles [((W)w)->active - 1] = idles [--idlecnt];	1556	idles [((W)w)->active - 1] = idles [--idlecnt];
1416	ev_stop (EV_A_ (W)w);	1557	ev_stop (EV_A_ (W)w);
1417	}	1558	}
1418		1559
1419	void	1560	void
1420	ev_prepare_start (EV_P_ struct ev_prepare *w)	1561	ev_prepare_start (EV_P_ struct ev_prepare *w)
1421	{	1562	{
1422	if (ev_is_active (w))	1563	if (expect_false (ev_is_active (w)))
1423	return;	1564	return;
1424		1565
1425	ev_start (EV_A_ (W)w, ++preparecnt);	1566	ev_start (EV_A_ (W)w, ++preparecnt);
1426	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));	1567	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1427	prepares [preparecnt - 1] = w;	1568	prepares [preparecnt - 1] = w;
1428	}	1569	}
1429		1570
1430	void	1571	void
1431	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1572	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1432	{	1573	{
1433	ev_clear_pending (EV_A_ (W)w);	1574	ev_clear_pending (EV_A_ (W)w);
1434	if (ev_is_active (w))	1575	if (expect_false (!ev_is_active (w)))
1435	return;	1576	return;
1436		1577
1437	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1578	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1438	ev_stop (EV_A_ (W)w);	1579	ev_stop (EV_A_ (W)w);
1439	}	1580	}
1440		1581
1441	void	1582	void
1442	ev_check_start (EV_P_ struct ev_check *w)	1583	ev_check_start (EV_P_ struct ev_check *w)
1443	{	1584	{
1444	if (ev_is_active (w))	1585	if (expect_false (ev_is_active (w)))
1445	return;	1586	return;
1446		1587
1447	ev_start (EV_A_ (W)w, ++checkcnt);	1588	ev_start (EV_A_ (W)w, ++checkcnt);
1448	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));	1589	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1449	checks [checkcnt - 1] = w;	1590	checks [checkcnt - 1] = w;
1450	}	1591	}
1451		1592
1452	void	1593	void
1453	ev_check_stop (EV_P_ struct ev_check *w)	1594	ev_check_stop (EV_P_ struct ev_check *w)
1454	{	1595	{
1455	ev_clear_pending (EV_A_ (W)w);	1596	ev_clear_pending (EV_A_ (W)w);
1456	if (ev_is_active (w))	1597	if (expect_false (!ev_is_active (w)))
1457	return;	1598	return;
1458		1599
1459	checks [((W)w)->active - 1] = checks [--checkcnt];	1600	checks [((W)w)->active - 1] = checks [--checkcnt];
1460	ev_stop (EV_A_ (W)w);	1601	ev_stop (EV_A_ (W)w);
1461	}	1602	}
…		…
1466		1607
1467	void	1608	void
1468	ev_signal_start (EV_P_ struct ev_signal *w)	1609	ev_signal_start (EV_P_ struct ev_signal *w)
1469	{	1610	{
1470	#if EV_MULTIPLICITY	1611	#if EV_MULTIPLICITY
1471	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1612	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1472	#endif	1613	#endif
1473	if (ev_is_active (w))	1614	if (expect_false (ev_is_active (w)))
1474	return;	1615	return;
1475		1616
1476	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1617	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1477		1618
1478	ev_start (EV_A_ (W)w, 1);	1619	ev_start (EV_A_ (W)w, 1);
1479	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1620	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1480	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1621	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1481		1622
1482	if (!((WL)w)->next)	1623	if (!((WL)w)->next)
1483	{	1624	{
1484	#if WIN32	1625	#if _WIN32
1485	signal (w->signum, sighandler);	1626	signal (w->signum, sighandler);
1486	#else	1627	#else
1487	struct sigaction sa;	1628	struct sigaction sa;
1488	sa.sa_handler = sighandler;	1629	sa.sa_handler = sighandler;
1489	sigfillset (&sa.sa_mask);	1630	sigfillset (&sa.sa_mask);
…		…
1495		1636
1496	void	1637	void
1497	ev_signal_stop (EV_P_ struct ev_signal *w)	1638	ev_signal_stop (EV_P_ struct ev_signal *w)
1498	{	1639	{
1499	ev_clear_pending (EV_A_ (W)w);	1640	ev_clear_pending (EV_A_ (W)w);
1500	if (!ev_is_active (w))	1641	if (expect_false (!ev_is_active (w)))
1501	return;	1642	return;
1502		1643
1503	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1644	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1504	ev_stop (EV_A_ (W)w);	1645	ev_stop (EV_A_ (W)w);
1505		1646
…		…
1509		1650
1510	void	1651	void
1511	ev_child_start (EV_P_ struct ev_child *w)	1652	ev_child_start (EV_P_ struct ev_child *w)
1512	{	1653	{
1513	#if EV_MULTIPLICITY	1654	#if EV_MULTIPLICITY
1514	assert (("child watchers are only supported in the default loop", loop == default_loop));	1655	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1515	#endif	1656	#endif
1516	if (ev_is_active (w))	1657	if (expect_false (ev_is_active (w)))
1517	return;	1658	return;
1518		1659
1519	ev_start (EV_A_ (W)w, 1);	1660	ev_start (EV_A_ (W)w, 1);
1520	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1661	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1521	}	1662	}
1522		1663
1523	void	1664	void
1524	ev_child_stop (EV_P_ struct ev_child *w)	1665	ev_child_stop (EV_P_ struct ev_child *w)
1525	{	1666	{
1526	ev_clear_pending (EV_A_ (W)w);	1667	ev_clear_pending (EV_A_ (W)w);
1527	if (ev_is_active (w))	1668	if (expect_false (!ev_is_active (w)))
1528	return;	1669	return;
1529		1670
1530	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1671	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1531	ev_stop (EV_A_ (W)w);	1672	ev_stop (EV_A_ (W)w);
1532	}	1673	}
		1674
		1675	#if EV_MULTIPLICITY
		1676	static void
		1677	embed_cb (EV_P_ struct ev_io *io, int revents)
		1678	{
		1679	struct ev_embed w = (struct ev_embed )(((char *)io) - offsetof (struct ev_embed, io));
		1680
		1681	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1682	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1683	}
		1684
		1685	void
		1686	ev_embed_start (EV_P_ struct ev_embed *w)
		1687	{
		1688	if (expect_false (ev_is_active (w)))
		1689	return;
		1690
		1691	{
		1692	struct ev_loop *loop = w->loop;
		1693	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1694	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1695	}
		1696
		1697	ev_io_start (EV_A_ &w->io);
		1698	ev_start (EV_A_ (W)w, 1);
		1699	}
		1700
		1701	void
		1702	ev_embed_stop (EV_P_ struct ev_embed *w)
		1703	{
		1704	ev_clear_pending (EV_A_ (W)w);
		1705	if (expect_false (!ev_is_active (w)))
		1706	return;
		1707
		1708	ev_io_stop (EV_A_ &w->io);
		1709	ev_stop (EV_A_ (W)w);
		1710	}
		1711	#endif
1533		1712
1534	/*****************************************************************************/	1713	/*****************************************************************************/
1535		1714
1536	struct ev_once	1715	struct ev_once
1537	{	1716	{
…		…
1569	void	1748	void
1570	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1749	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1571	{	1750	{
1572	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));	1751	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1573		1752
1574	if (!once)	1753	if (expect_false (!once))
		1754	{
1575	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1755	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1576	else	1756	return;
1577	{	1757	}
		1758
1578	once->cb = cb;	1759	once->cb = cb;
1579	once->arg = arg;	1760	once->arg = arg;
1580		1761
1581	ev_init (&once->io, once_cb_io);	1762	ev_init (&once->io, once_cb_io);
1582	if (fd >= 0)	1763	if (fd >= 0)
1583	{	1764	{
1584	ev_io_set (&once->io, fd, events);	1765	ev_io_set (&once->io, fd, events);
1585	ev_io_start (EV_A_ &once->io);	1766	ev_io_start (EV_A_ &once->io);
1586	}	1767	}
1587		1768
1588	ev_init (&once->to, once_cb_to);	1769	ev_init (&once->to, once_cb_to);
1589	if (timeout >= 0.)	1770	if (timeout >= 0.)
1590	{	1771	{
1591	ev_timer_set (&once->to, timeout, 0.);	1772	ev_timer_set (&once->to, timeout, 0.);
1592	ev_timer_start (EV_A_ &once->to);	1773	ev_timer_start (EV_A_ &once->to);
1593	}
1594	}	1774	}
1595	}	1775	}
1596		1776
		1777	#ifdef __cplusplus
		1778	}
		1779	#endif
		1780

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing libev/ev.c (file contents): Revision 1.85 by root, Sat Nov 10 03:13:50 2007 UTC vs. Revision 1.134 by root, Fri Nov 23 19:13:33 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.85 by root, Sat Nov 10 03:13:50 2007 UTC vs.
Revision 1.134 by root, Fri Nov 23 19:13:33 2007 UTC