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Comparing libev/ev.c (file contents):
Revision 1.70 by root, Tue Nov 6 00:52:32 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>
58	#include <stdlib.h>	102	#include <stdlib.h>
59	#include <unistd.h>
60	#include <fcntl.h>	103	#include <fcntl.h>
61	#include <signal.h>
62	#include <stddef.h>	104	#include <stddef.h>
63		105
64	#include <stdio.h>	106	#include <stdio.h>
65		107
66	#include <assert.h>	108	#include <assert.h>
67	#include <errno.h>	109	#include <errno.h>
68	#include <sys/types.h>	110	#include <sys/types.h>
		111	#include <time.h>
		112
		113	#include <signal.h>
		114
69	#ifndef WIN32	115	#ifndef _WIN32
		116	# include <unistd.h>
		117	# include <sys/time.h>
70	# 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
71	#endif	124	# endif
72	#include <sys/time.h>	125	#endif
73	#include <time.h>
74		126
75	/**/	127	/**/
76		128
77	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
78	# 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
79	#endif	135	#endif
80		136
81	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
82	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
83	#endif	139	#endif
84		140
85	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
86	# 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
87	#endif	147	#endif
88		148
89	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
90	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
91	#endif	151	#endif
92		152
93	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
94	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
95	#endif	155	#endif
96		156
97	#ifndef EV_USE_WIN32
98	# ifdef WIN32
99	# define EV_USE_WIN32 1
100	# else
101	# define EV_USE_WIN32 0
102	# endif
103	#endif
104
105	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
106	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
107	#endif	159	#endif
108		160
109	/**/	161	/**/
110		162
111	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
116	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
117	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
118	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
119	#endif	171	#endif
120		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
121	/**/	177	/**/
122		178
123	#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) */
124	#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) */
125	#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 */
126	/*#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 */
127		183
		184	#ifdef EV_H
		185	# include EV_H
		186	#else
128	#include "ev.h"	187	# include "ev.h"
		188	#endif
129		189
130	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
131	# define expect(expr,value) __builtin_expect ((expr),(value))	191	# define expect(expr,value) __builtin_expect ((expr),(value))
132	# define inline inline	192	# define inline static inline
133	#else	193	#else
134	# define expect(expr,value) (expr)	194	# define expect(expr,value) (expr)
135	# define inline static	195	# define inline static
136	#endif	196	#endif
137		197
…		…
139	#define expect_true(expr) expect ((expr) != 0, 1)	199	#define expect_true(expr) expect ((expr) != 0, 1)
140		200
141	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	201	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	202	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
143		203
		204	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		205	#define EMPTY2(a,b) /* used to suppress some warnings */
		206
144	typedef struct ev_watcher *W;	207	typedef struct ev_watcher *W;
145	typedef struct ev_watcher_list *WL;	208	typedef struct ev_watcher_list *WL;
146	typedef struct ev_watcher_time *WT;	209	typedef struct ev_watcher_time *WT;
147		210
148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	211	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149		212
150	#if WIN32	213	#ifdef _WIN32
151	/* note: the comment below could not be substantiated, but what would I care */	214	# include "ev_win32.c"
152	/* MSDN says this is required to handle SIGFPE */
153	volatile double SIGFPE_REQ = 0.0f;
154	#endif	215	#endif
155		216
156	/*****************************************************************************/	217	/*****************************************************************************/
157		218
158	static void (*syserr_cb)(const char *msg);	219	static void (*syserr_cb)(const char *msg);
…		…
206	typedef struct	267	typedef struct
207	{	268	{
208	WL head;	269	WL head;
209	unsigned char events;	270	unsigned char events;
210	unsigned char reify;	271	unsigned char reify;
		272	#if EV_SELECT_IS_WINSOCKET
		273	SOCKET handle;
		274	#endif
211	} ANFD;	275	} ANFD;
212		276
213	typedef struct	277	typedef struct
214	{	278	{
215	W w;	279	W w;
216	int events;	280	int events;
217	} ANPENDING;	281	} ANPENDING;
218		282
219	#if EV_MULTIPLICITY	283	#if EV_MULTIPLICITY
220		284
221	struct ev_loop	285	struct ev_loop
222	{	286	{
		287	ev_tstamp ev_rt_now;
		288	#define ev_rt_now ((loop)->ev_rt_now)
223	# define VAR(name,decl) decl;	289	#define VAR(name,decl) decl;
224	# include "ev_vars.h"	290	#include "ev_vars.h"
225	};
226	# undef VAR	291	#undef VAR
		292	};
227	# include "ev_wrap.h"	293	#include "ev_wrap.h"
		294
		295	static struct ev_loop default_loop_struct;
		296	struct ev_loop *ev_default_loop_ptr;
228		297
229	#else	298	#else
230		299
		300	ev_tstamp ev_rt_now;
231	# define VAR(name,decl) static decl;	301	#define VAR(name,decl) static decl;
232	# include "ev_vars.h"	302	#include "ev_vars.h"
233	# undef VAR	303	#undef VAR
		304
		305	static int ev_default_loop_ptr;
234		306
235	#endif	307	#endif
236		308
237	/*****************************************************************************/	309	/*****************************************************************************/
238		310
239	inline ev_tstamp	311	ev_tstamp
240	ev_time (void)	312	ev_time (void)
241	{	313	{
242	#if EV_USE_REALTIME	314	#if EV_USE_REALTIME
243	struct timespec ts;	315	struct timespec ts;
244	clock_gettime (CLOCK_REALTIME, &ts);	316	clock_gettime (CLOCK_REALTIME, &ts);
…		…
263	#endif	335	#endif
264		336
265	return ev_time ();	337	return ev_time ();
266	}	338	}
267		339
		340	#if EV_MULTIPLICITY
268	ev_tstamp	341	ev_tstamp
269	ev_now (EV_P)	342	ev_now (EV_P)
270	{	343	{
271	return rt_now;	344	return ev_rt_now;
272	}	345	}
		346	#endif
273		347
274	#define array_roundsize(base,n) ((n) | 4 & ~3)	348	#define array_roundsize(type,n) (((n) | 4) & ~3)
275		349
276	#define array_needsize(base,cur,cnt,init) \	350	#define array_needsize(type,base,cur,cnt,init) \
277	if (expect_false ((cnt) > cur)) \	351	if (expect_false ((cnt) > cur)) \
278	{ \	352	{ \
279	int newcnt = cur; \	353	int newcnt = cur; \
280	do \	354	do \
281	{ \	355	{ \
282	newcnt = array_roundsize (base, newcnt << 1); \	356	newcnt = array_roundsize (type, newcnt << 1); \
283	} \	357	} \
284	while ((cnt) > newcnt); \	358	while ((cnt) > newcnt); \
285	\	359	\
286	base = ev_realloc (base, sizeof (*base) * (newcnt)); \	360	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
287	init (base + cur, newcnt - cur); \	361	init (base + cur, newcnt - cur); \
288	cur = newcnt; \	362	cur = newcnt; \
289	}	363	}
290		364
291	#define array_slim(stem) \	365	#define array_slim(type,stem) \
292	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	366	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
293	{ \	367	{ \
294	stem ## max = array_roundsize (stem ## cnt >> 1); \	368	stem ## max = array_roundsize (stem ## cnt >> 1); \
295	base = ev_realloc (base, sizeof (*base) * (stem ## max)); \	369	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
296	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	370	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
297	}	371	}
298		372
299	#define array_free(stem, idx) \	373	#define array_free(stem, idx) \
300	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;
…		…
312		386
313	++base;	387	++base;
314	}	388	}
315	}	389	}
316		390
317	static void	391	void
318	event (EV_P_ W w, int events)	392	ev_feed_event (EV_P_ void *w, int revents)
319	{	393	{
320	if (w->pending)	394	W w_ = (W)w;
		395
		396	if (expect_false (w_->pending))
321	{	397	{
322	pendings [ABSPRI (w)][w->pending - 1].events |= events;	398	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
323	return;	399	return;
324	}	400	}
325		401
		402	if (expect_false (!w_->cb))
		403	return;
		404
326	w->pending = ++pendingcnt [ABSPRI (w)];	405	w_->pending = ++pendingcnt [ABSPRI (w_)];
327	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	406	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
328	pendings [ABSPRI (w)][w->pending - 1].w = w;	407	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
329	pendings [ABSPRI (w)][w->pending - 1].events = events;	408	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
330	}	409	}
331		410
332	static void	411	static void
333	queue_events (EV_P_ W *events, int eventcnt, int type)	412	queue_events (EV_P_ W *events, int eventcnt, int type)
334	{	413	{
335	int i;	414	int i;
336		415
337	for (i = 0; i < eventcnt; ++i)	416	for (i = 0; i < eventcnt; ++i)
338	event (EV_A_ events [i], type);	417	ev_feed_event (EV_A_ events [i], type);
339	}	418	}
340		419
341	static void	420	inline void
342	fd_event (EV_P_ int fd, int events)	421	fd_event (EV_P_ int fd, int revents)
343	{	422	{
344	ANFD *anfd = anfds + fd;	423	ANFD *anfd = anfds + fd;
345	struct ev_io *w;	424	struct ev_io *w;
346		425
347	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	426	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
348	{	427	{
349	int ev = w->events & events;	428	int ev = w->events & revents;
350		429
351	if (ev)	430	if (ev)
352	event (EV_A_ (W)w, ev);	431	ev_feed_event (EV_A_ (W)w, ev);
353	}	432	}
		433	}
		434
		435	void
		436	ev_feed_fd_event (EV_P_ int fd, int revents)
		437	{
		438	fd_event (EV_A_ fd, revents);
354	}	439	}
355		440
356	/*****************************************************************************/	441	/*****************************************************************************/
357		442
358	static void	443	inline void
359	fd_reify (EV_P)	444	fd_reify (EV_P)
360	{	445	{
361	int i;	446	int i;
362		447
363	for (i = 0; i < fdchangecnt; ++i)	448	for (i = 0; i < fdchangecnt; ++i)
…		…
369	int events = 0;	454	int events = 0;
370		455
371	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)
372	events |= w->events;	457	events |= w->events;
373		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
374	anfd->reify = 0;	468	anfd->reify = 0;
375		469
376	method_modify (EV_A_ fd, anfd->events, events);	470	backend_modify (EV_A_ fd, anfd->events, events);
377	anfd->events = events;	471	anfd->events = events;
378	}	472	}
379		473
380	fdchangecnt = 0;	474	fdchangecnt = 0;
381	}	475	}
382		476
383	static void	477	static void
384	fd_change (EV_P_ int fd)	478	fd_change (EV_P_ int fd)
385	{	479	{
386	if (anfds [fd].reify)	480	if (expect_false (anfds [fd].reify))
387	return;	481	return;
388		482
389	anfds [fd].reify = 1;	483	anfds [fd].reify = 1;
390		484
391	++fdchangecnt;	485	++fdchangecnt;
392	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	486	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
393	fdchanges [fdchangecnt - 1] = fd;	487	fdchanges [fdchangecnt - 1] = fd;
394	}	488	}
395		489
396	static void	490	static void
397	fd_kill (EV_P_ int fd)	491	fd_kill (EV_P_ int fd)
…		…
399	struct ev_io *w;	493	struct ev_io *w;
400		494
401	while ((w = (struct ev_io *)anfds [fd].head))	495	while ((w = (struct ev_io *)anfds [fd].head))
402	{	496	{
403	ev_io_stop (EV_A_ w);	497	ev_io_stop (EV_A_ w);
404	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);
405	}	499	}
		500	}
		501
		502	inline int
		503	fd_valid (int fd)
		504	{
		505	#ifdef _WIN32
		506	return _get_osfhandle (fd) != -1;
		507	#else
		508	return fcntl (fd, F_GETFD) != -1;
		509	#endif
406	}	510	}
407		511
408	/* called on EBADF to verify fds */	512	/* called on EBADF to verify fds */
409	static void	513	static void
410	fd_ebadf (EV_P)	514	fd_ebadf (EV_P)
411	{	515	{
412	int fd;	516	int fd;
413		517
414	for (fd = 0; fd < anfdmax; ++fd)	518	for (fd = 0; fd < anfdmax; ++fd)
415	if (anfds [fd].events)	519	if (anfds [fd].events)
416	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	520	if (!fd_valid (fd) == -1 && errno == EBADF)
417	fd_kill (EV_A_ fd);	521	fd_kill (EV_A_ fd);
418	}	522	}
419		523
420	/* called on ENOMEM in select/poll to kill some fds and retry */	524	/* called on ENOMEM in select/poll to kill some fds and retry */
421	static void	525	static void
…		…
429	fd_kill (EV_A_ fd);	533	fd_kill (EV_A_ fd);
430	return;	534	return;
431	}	535	}
432	}	536	}
433		537
434	/* 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 */
435	static void	539	static void
436	fd_rearm_all (EV_P)	540	fd_rearm_all (EV_P)
437	{	541	{
438	int fd;	542	int fd;
439		543
…		…
487		591
488	heap [k] = w;	592	heap [k] = w;
489	((W)heap [k])->active = k + 1;	593	((W)heap [k])->active = k + 1;
490	}	594	}
491		595
		596	inline void
		597	adjustheap (WT *heap, int N, int k)
		598	{
		599	upheap (heap, k);
		600	downheap (heap, N, k);
		601	}
		602
492	/*****************************************************************************/	603	/*****************************************************************************/
493		604
494	typedef struct	605	typedef struct
495	{	606	{
496	WL head;	607	WL head;
…		…
517	}	628	}
518		629
519	static void	630	static void
520	sighandler (int signum)	631	sighandler (int signum)
521	{	632	{
522	#if WIN32	633	#if _WIN32
523	signal (signum, sighandler);	634	signal (signum, sighandler);
524	#endif	635	#endif
525		636
526	signals [signum - 1].gotsig = 1;	637	signals [signum - 1].gotsig = 1;
527		638
…		…
532	write (sigpipe [1], &signum, 1);	643	write (sigpipe [1], &signum, 1);
533	errno = old_errno;	644	errno = old_errno;
534	}	645	}
535	}	646	}
536		647
		648	void
		649	ev_feed_signal_event (EV_P_ int signum)
		650	{
		651	WL w;
		652
		653	#if EV_MULTIPLICITY
		654	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		655	#endif
		656
		657	--signum;
		658
		659	if (signum < 0 || signum >= signalmax)
		660	return;
		661
		662	signals [signum].gotsig = 0;
		663
		664	for (w = signals [signum].head; w; w = w->next)
		665	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		666	}
		667
537	static void	668	static void
538	sigcb (EV_P_ struct ev_io *iow, int revents)	669	sigcb (EV_P_ struct ev_io *iow, int revents)
539	{	670	{
540	WL w;
541	int signum;	671	int signum;
542		672
543	read (sigpipe [0], &revents, 1);	673	read (sigpipe [0], &revents, 1);
544	gotsig = 0;	674	gotsig = 0;
545		675
546	for (signum = signalmax; signum--; )	676	for (signum = signalmax; signum--; )
547	if (signals [signum].gotsig)	677	if (signals [signum].gotsig)
548	{	678	ev_feed_signal_event (EV_A_ signum + 1);
549	signals [signum].gotsig = 0;	679	}
550		680
551	for (w = signals [signum].head; w; w = w->next)	681	static void
552	event (EV_A_ (W)w, EV_SIGNAL);	682	fd_intern (int fd)
553	}	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
554	}	691	}
555		692
556	static void	693	static void
557	siginit (EV_P)	694	siginit (EV_P)
558	{	695	{
559	#ifndef WIN32	696	fd_intern (sigpipe [0]);
560	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	697	fd_intern (sigpipe [1]);
561	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
562
563	/* rather than sort out wether we really need nb, set it */
564	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
565	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
566	#endif
567		698
568	ev_io_set (&sigev, sigpipe [0], EV_READ);	699	ev_io_set (&sigev, sigpipe [0], EV_READ);
569	ev_io_start (EV_A_ &sigev);	700	ev_io_start (EV_A_ &sigev);
570	ev_unref (EV_A); /* child watcher should not keep loop alive */	701	ev_unref (EV_A); /* child watcher should not keep loop alive */
571	}	702	}
572		703
573	/*****************************************************************************/	704	/*****************************************************************************/
574		705
575	#ifndef WIN32
576
577	static struct ev_child *childs [PID_HASHSIZE];	706	static struct ev_child *childs [PID_HASHSIZE];
		707
		708	#ifndef _WIN32
		709
578	static struct ev_signal childev;	710	static struct ev_signal childev;
579		711
580	#ifndef WCONTINUED	712	#ifndef WCONTINUED
581	# define WCONTINUED 0	713	# define WCONTINUED 0
582	#endif	714	#endif
…		…
590	if (w->pid == pid || !w->pid)	722	if (w->pid == pid || !w->pid)
591	{	723	{
592	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	724	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
593	w->rpid = pid;	725	w->rpid = pid;
594	w->rstatus = status;	726	w->rstatus = status;
595	event (EV_A_ (W)w, EV_CHILD);	727	ev_feed_event (EV_A_ (W)w, EV_CHILD);
596	}	728	}
597	}	729	}
598		730
599	static void	731	static void
600	childcb (EV_P_ struct ev_signal *sw, int revents)	732	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
602	int pid, status;	734	int pid, status;
603		735
604	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	736	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
605	{	737	{
606	/* 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 */
607	event (EV_A_ (W)sw, EV_SIGNAL);	740	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
608		741
609	child_reap (EV_A_ sw, pid, pid, status);	742	child_reap (EV_A_ sw, pid, pid, status);
610	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 */
611	}	744	}
612	}	745	}
613		746
614	#endif	747	#endif
615		748
616	/*****************************************************************************/	749	/*****************************************************************************/
617		750
		751	#if EV_USE_PORT
		752	# include "ev_port.c"
		753	#endif
618	#if EV_USE_KQUEUE	754	#if EV_USE_KQUEUE
619	# include "ev_kqueue.c"	755	# include "ev_kqueue.c"
620	#endif	756	#endif
621	#if EV_USE_EPOLL	757	#if EV_USE_EPOLL
622	# include "ev_epoll.c"	758	# include "ev_epoll.c"
…		…
642		778
643	/* 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 */
644	static int	780	static int
645	enable_secure (void)	781	enable_secure (void)
646	{	782	{
647	#ifdef WIN32	783	#ifdef _WIN32
648	return 0;	784	return 0;
649	#else	785	#else
650	return getuid () != geteuid ()	786	return getuid () != geteuid ()
651	|| getgid () != getegid ();	787	|| getgid () != getegid ();
652	#endif	788	#endif
653	}	789	}
654		790
655	int	791	unsigned int
656	ev_method (EV_P)	792	ev_supported_backends (void)
657	{	793	{
658	return method;	794	unsigned int flags = 0;
659	}
660		795
661	static void	796	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
662	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)
663	{	807	{
664	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)
665	{	841	{
666	#if EV_USE_MONOTONIC	842	#if EV_USE_MONOTONIC
667	{	843	{
668	struct timespec ts;	844	struct timespec ts;
669	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	845	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
670	have_monotonic = 1;	846	have_monotonic = 1;
671	}	847	}
672	#endif	848	#endif
673		849
674	rt_now = ev_time ();	850	ev_rt_now = ev_time ();
675	mn_now = get_clock ();	851	mn_now = get_clock ();
676	now_floor = mn_now;	852	now_floor = mn_now;
677	rtmn_diff = rt_now - mn_now;	853	rtmn_diff = ev_rt_now - mn_now;
678		854
679	if (methods == EVMETHOD_AUTO)	855	if (!(flags & EVFLAG_NOENV)
680	if (!enable_secure () && getenv ("LIBEV_METHODS"))	856	&& !enable_secure ()
		857	&& getenv ("LIBEV_FLAGS"))
681	methods = atoi (getenv ("LIBEV_METHODS"));	858	flags = atoi (getenv ("LIBEV_FLAGS"));
682	else
683	methods = EVMETHOD_ANY;
684		859
685	method = 0;	860	if (!(flags & 0x0000ffffUL))
686	#if EV_USE_WIN32	861	flags |= ev_recommended_backends ();
687	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);
688	#endif	866	#endif
689	#if EV_USE_KQUEUE	867	#if EV_USE_KQUEUE
690	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	868	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
691	#endif	869	#endif
692	#if EV_USE_EPOLL	870	#if EV_USE_EPOLL
693	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	871	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
694	#endif	872	#endif
695	#if EV_USE_POLL	873	#if EV_USE_POLL
696	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	874	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
697	#endif	875	#endif
698	#if EV_USE_SELECT	876	#if EV_USE_SELECT
699	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	877	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
700	#endif	878	#endif
701		879
702	ev_watcher_init (&sigev, sigcb);	880	ev_init (&sigev, sigcb);
703	ev_set_priority (&sigev, EV_MAXPRI);	881	ev_set_priority (&sigev, EV_MAXPRI);
704	}	882	}
705	}	883	}
706		884
707	void	885	static void
708	loop_destroy (EV_P)	886	loop_destroy (EV_P)
709	{	887	{
710	int i;	888	int i;
711		889
712	#if EV_USE_WIN32	890	#if EV_USE_PORT
713	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	891	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
714	#endif	892	#endif
715	#if EV_USE_KQUEUE	893	#if EV_USE_KQUEUE
716	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	894	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
717	#endif	895	#endif
718	#if EV_USE_EPOLL	896	#if EV_USE_EPOLL
719	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	897	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
720	#endif	898	#endif
721	#if EV_USE_POLL	899	#if EV_USE_POLL
722	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	900	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
723	#endif	901	#endif
724	#if EV_USE_SELECT	902	#if EV_USE_SELECT
725	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	903	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
726	#endif	904	#endif
727		905
728	for (i = NUMPRI; i--; )	906	for (i = NUMPRI; i--; )
729	array_free (pending, [i]);	907	array_free (pending, [i]);
730		908
		909	/* have to use the microsoft-never-gets-it-right macro */
731	array_free (fdchange, );	910	array_free (fdchange, EMPTY0);
732	array_free (timer, );	911	array_free (timer, EMPTY0);
		912	#if EV_PERIODICS
733	array_free (periodic, );	913	array_free (periodic, EMPTY0);
		914	#endif
734	array_free (idle, );	915	array_free (idle, EMPTY0);
735	array_free (prepare, );	916	array_free (prepare, EMPTY0);
736	array_free (check, );	917	array_free (check, EMPTY0);
737		918
738	method = 0;	919	backend = 0;
739	}	920	}
740		921
741	static void	922	static void
742	loop_fork (EV_P)	923	loop_fork (EV_P)
743	{	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
744	#if EV_USE_EPOLL	931	#if EV_USE_EPOLL
745	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	932	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
746	#endif
747	#if EV_USE_KQUEUE
748	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
749	#endif	933	#endif
750		934
751	if (ev_is_active (&sigev))	935	if (ev_is_active (&sigev))
752	{	936	{
753	/* default loop */	937	/* default loop */
…		…
766	postfork = 0;	950	postfork = 0;
767	}	951	}
768		952
769	#if EV_MULTIPLICITY	953	#if EV_MULTIPLICITY
770	struct ev_loop *	954	struct ev_loop *
771	ev_loop_new (int methods)	955	ev_loop_new (unsigned int flags)
772	{	956	{
773	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));
774		958
775	memset (loop, 0, sizeof (struct ev_loop));	959	memset (loop, 0, sizeof (struct ev_loop));
776		960
777	loop_init (EV_A_ methods);	961	loop_init (EV_A_ flags);
778		962
779	if (ev_method (EV_A))	963	if (ev_backend (EV_A))
780	return loop;	964	return loop;
781		965
782	return 0;	966	return 0;
783	}	967	}
784		968
…		…
796	}	980	}
797		981
798	#endif	982	#endif
799		983
800	#if EV_MULTIPLICITY	984	#if EV_MULTIPLICITY
801	struct ev_loop default_loop_struct;
802	static struct ev_loop *default_loop;
803
804	struct ev_loop *	985	struct ev_loop *
		986	ev_default_loop_init (unsigned int flags)
805	#else	987	#else
806	static int default_loop;
807
808	int	988	int
		989	ev_default_loop (unsigned int flags)
809	#endif	990	#endif
810	ev_default_loop (int methods)
811	{	991	{
812	if (sigpipe [0] == sigpipe [1])	992	if (sigpipe [0] == sigpipe [1])
813	if (pipe (sigpipe))	993	if (pipe (sigpipe))
814	return 0;	994	return 0;
815		995
816	if (!default_loop)	996	if (!ev_default_loop_ptr)
817	{	997	{
818	#if EV_MULTIPLICITY	998	#if EV_MULTIPLICITY
819	struct ev_loop *loop = default_loop = &default_loop_struct;	999	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
820	#else	1000	#else
821	default_loop = 1;	1001	ev_default_loop_ptr = 1;
822	#endif	1002	#endif
823		1003
824	loop_init (EV_A_ methods);	1004	loop_init (EV_A_ flags);
825		1005
826	if (ev_method (EV_A))	1006	if (ev_backend (EV_A))
827	{	1007	{
828	siginit (EV_A);	1008	siginit (EV_A);
829		1009
830	#ifndef WIN32	1010	#ifndef _WIN32
831	ev_signal_init (&childev, childcb, SIGCHLD);	1011	ev_signal_init (&childev, childcb, SIGCHLD);
832	ev_set_priority (&childev, EV_MAXPRI);	1012	ev_set_priority (&childev, EV_MAXPRI);
833	ev_signal_start (EV_A_ &childev);	1013	ev_signal_start (EV_A_ &childev);
834	ev_unref (EV_A); /* child watcher should not keep loop alive */	1014	ev_unref (EV_A); /* child watcher should not keep loop alive */
835	#endif	1015	#endif
836	}	1016	}
837	else	1017	else
838	default_loop = 0;	1018	ev_default_loop_ptr = 0;
839	}	1019	}
840		1020
841	return default_loop;	1021	return ev_default_loop_ptr;
842	}	1022	}
843		1023
844	void	1024	void
845	ev_default_destroy (void)	1025	ev_default_destroy (void)
846	{	1026	{
847	#if EV_MULTIPLICITY	1027	#if EV_MULTIPLICITY
848	struct ev_loop *loop = default_loop;	1028	struct ev_loop *loop = ev_default_loop_ptr;
849	#endif	1029	#endif
850		1030
		1031	#ifndef _WIN32
851	ev_ref (EV_A); /* child watcher */	1032	ev_ref (EV_A); /* child watcher */
852	ev_signal_stop (EV_A_ &childev);	1033	ev_signal_stop (EV_A_ &childev);
		1034	#endif
853		1035
854	ev_ref (EV_A); /* signal watcher */	1036	ev_ref (EV_A); /* signal watcher */
855	ev_io_stop (EV_A_ &sigev);	1037	ev_io_stop (EV_A_ &sigev);
856		1038
857	close (sigpipe [0]); sigpipe [0] = 0;	1039	close (sigpipe [0]); sigpipe [0] = 0;
…		…
862		1044
863	void	1045	void
864	ev_default_fork (void)	1046	ev_default_fork (void)
865	{	1047	{
866	#if EV_MULTIPLICITY	1048	#if EV_MULTIPLICITY
867	struct ev_loop *loop = default_loop;	1049	struct ev_loop *loop = ev_default_loop_ptr;
868	#endif	1050	#endif
869		1051
870	if (method)	1052	if (backend)
871	postfork = 1;	1053	postfork = 1;
872	}	1054	}
873		1055
874	/*****************************************************************************/	1056	/*****************************************************************************/
875		1057
876	static void	1058	static int
		1059	any_pending (EV_P)
		1060	{
		1061	int pri;
		1062
		1063	for (pri = NUMPRI; pri--; )
		1064	if (pendingcnt [pri])
		1065	return 1;
		1066
		1067	return 0;
		1068	}
		1069
		1070	inline void
877	call_pending (EV_P)	1071	call_pending (EV_P)
878	{	1072	{
879	int pri;	1073	int pri;
880		1074
881	for (pri = NUMPRI; pri--; )	1075	for (pri = NUMPRI; pri--; )
882	while (pendingcnt [pri])	1076	while (pendingcnt [pri])
883	{	1077	{
884	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1078	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
885		1079
886	if (p->w)	1080	if (expect_true (p->w))
887	{	1081	{
888	p->w->pending = 0;	1082	p->w->pending = 0;
889	p->w->cb (EV_A_ p->w, p->events);	1083	EV_CB_INVOKE (p->w, p->events);
890	}	1084	}
891	}	1085	}
892	}	1086	}
893		1087
894	static void	1088	inline void
895	timers_reify (EV_P)	1089	timers_reify (EV_P)
896	{	1090	{
897	while (timercnt && ((WT)timers [0])->at <= mn_now)	1091	while (timercnt && ((WT)timers [0])->at <= mn_now)
898	{	1092	{
899	struct ev_timer *w = timers [0];	1093	struct ev_timer *w = timers [0];
…		…
902		1096
903	/* first reschedule or stop timer */	1097	/* first reschedule or stop timer */
904	if (w->repeat)	1098	if (w->repeat)
905	{	1099	{
906	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
907	((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
908	downheap ((WT *)timers, timercnt, 0);	1106	downheap ((WT *)timers, timercnt, 0);
909	}	1107	}
910	else	1108	else
911	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1109	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
912		1110
913	event (EV_A_ (W)w, EV_TIMEOUT);	1111	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
914	}	1112	}
915	}	1113	}
916		1114
917	static void	1115	#if EV_PERIODICS
		1116	inline void
918	periodics_reify (EV_P)	1117	periodics_reify (EV_P)
919	{	1118	{
920	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1119	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
921	{	1120	{
922	struct ev_periodic *w = periodics [0];	1121	struct ev_periodic *w = periodics [0];
923		1122
924	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1123	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
925		1124
926	/* first reschedule or stop timer */	1125	/* first reschedule or stop timer */
927	if (w->interval)	1126	if (w->reschedule_cb)
928	{	1127	{
		1128	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1129	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1130	downheap ((WT *)periodics, periodiccnt, 0);
		1131	}
		1132	else if (w->interval)
		1133	{
929	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1134	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
930	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1135	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
931	downheap ((WT *)periodics, periodiccnt, 0);	1136	downheap ((WT *)periodics, periodiccnt, 0);
932	}	1137	}
933	else	1138	else
934	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1139	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
935		1140
936	event (EV_A_ (W)w, EV_PERIODIC);	1141	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
937	}	1142	}
938	}	1143	}
939		1144
940	static void	1145	static void
941	periodics_reschedule (EV_P)	1146	periodics_reschedule (EV_P)
…		…
945	/* adjust periodics after time jump */	1150	/* adjust periodics after time jump */
946	for (i = 0; i < periodiccnt; ++i)	1151	for (i = 0; i < periodiccnt; ++i)
947	{	1152	{
948	struct ev_periodic *w = periodics [i];	1153	struct ev_periodic *w = periodics [i];
949		1154
		1155	if (w->reschedule_cb)
		1156	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
950	if (w->interval)	1157	else if (w->interval)
951	{
952	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1158	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
953
954	if (fabs (diff) >= 1e-4)
955	{
956	ev_periodic_stop (EV_A_ w);
957	ev_periodic_start (EV_A_ w);
958
959	i = 0; /* restart loop, inefficient, but time jumps should be rare */
960	}
961	}
962	}	1159	}
		1160
		1161	/* now rebuild the heap */
		1162	for (i = periodiccnt >> 1; i--; )
		1163	downheap ((WT *)periodics, periodiccnt, i);
963	}	1164	}
		1165	#endif
964		1166
965	inline int	1167	inline int
966	time_update_monotonic (EV_P)	1168	time_update_monotonic (EV_P)
967	{	1169	{
968	mn_now = get_clock ();	1170	mn_now = get_clock ();
969		1171
970	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1172	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
971	{	1173	{
972	rt_now = rtmn_diff + mn_now;	1174	ev_rt_now = rtmn_diff + mn_now;
973	return 0;	1175	return 0;
974	}	1176	}
975	else	1177	else
976	{	1178	{
977	now_floor = mn_now;	1179	now_floor = mn_now;
978	rt_now = ev_time ();	1180	ev_rt_now = ev_time ();
979	return 1;	1181	return 1;
980	}	1182	}
981	}	1183	}
982		1184
983	static void	1185	inline void
984	time_update (EV_P)	1186	time_update (EV_P)
985	{	1187	{
986	int i;	1188	int i;
987		1189
988	#if EV_USE_MONOTONIC	1190	#if EV_USE_MONOTONIC
…		…
992	{	1194	{
993	ev_tstamp odiff = rtmn_diff;	1195	ev_tstamp odiff = rtmn_diff;
994		1196
995	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1197	for (i = 4; --i; ) /* loop a few times, before making important decisions */
996	{	1198	{
997	rtmn_diff = rt_now - mn_now;	1199	rtmn_diff = ev_rt_now - mn_now;
998		1200
999	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1201	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1000	return; /* all is well */	1202	return; /* all is well */
1001		1203
1002	rt_now = ev_time ();	1204	ev_rt_now = ev_time ();
1003	mn_now = get_clock ();	1205	mn_now = get_clock ();
1004	now_floor = mn_now;	1206	now_floor = mn_now;
1005	}	1207	}
1006		1208
		1209	# if EV_PERIODICS
1007	periodics_reschedule (EV_A);	1210	periodics_reschedule (EV_A);
		1211	# endif
1008	/* no timer adjustment, as the monotonic clock doesn't jump */	1212	/* no timer adjustment, as the monotonic clock doesn't jump */
1009	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1213	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1010	}	1214	}
1011	}	1215	}
1012	else	1216	else
1013	#endif	1217	#endif
1014	{	1218	{
1015	rt_now = ev_time ();	1219	ev_rt_now = ev_time ();
1016		1220
1017	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1221	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1018	{	1222	{
		1223	#if EV_PERIODICS
1019	periodics_reschedule (EV_A);	1224	periodics_reschedule (EV_A);
		1225	#endif
1020		1226
1021	/* 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 */
1022	for (i = 0; i < timercnt; ++i)	1228	for (i = 0; i < timercnt; ++i)
1023	((WT)timers [i])->at += rt_now - mn_now;	1229	((WT)timers [i])->at += ev_rt_now - mn_now;
1024	}	1230	}
1025		1231
1026	mn_now = rt_now;	1232	mn_now = ev_rt_now;
1027	}	1233	}
1028	}	1234	}
1029		1235
1030	void	1236	void
1031	ev_ref (EV_P)	1237	ev_ref (EV_P)
…		…
1045	ev_loop (EV_P_ int flags)	1251	ev_loop (EV_P_ int flags)
1046	{	1252	{
1047	double block;	1253	double block;
1048	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1254	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
1049		1255
1050	do	1256	while (activecnt)
1051	{	1257	{
1052	/* queue check watchers (and execute them) */	1258	/* queue check watchers (and execute them) */
1053	if (expect_false (preparecnt))	1259	if (expect_false (preparecnt))
1054	{	1260	{
1055	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1261	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1063	/* update fd-related kernel structures */	1269	/* update fd-related kernel structures */
1064	fd_reify (EV_A);	1270	fd_reify (EV_A);
1065		1271
1066	/* calculate blocking time */	1272	/* calculate blocking time */
1067		1273
1068	/* we only need this for !monotonic clockor timers, but as we basically	1274	/* we only need this for !monotonic clock or timers, but as we basically
1069	always have timers, we just calculate it always */	1275	always have timers, we just calculate it always */
1070	#if EV_USE_MONOTONIC	1276	#if EV_USE_MONOTONIC
1071	if (expect_true (have_monotonic))	1277	if (expect_true (have_monotonic))
1072	time_update_monotonic (EV_A);	1278	time_update_monotonic (EV_A);
1073	else	1279	else
1074	#endif	1280	#endif
1075	{	1281	{
1076	rt_now = ev_time ();	1282	ev_rt_now = ev_time ();
1077	mn_now = rt_now;	1283	mn_now = ev_rt_now;
1078	}	1284	}
1079		1285
1080	if (flags & EVLOOP_NONBLOCK || idlecnt)	1286	if (flags & EVLOOP_NONBLOCK || idlecnt)
1081	block = 0.;	1287	block = 0.;
1082	else	1288	else
1083	{	1289	{
1084	block = MAX_BLOCKTIME;	1290	block = MAX_BLOCKTIME;
1085		1291
1086	if (timercnt)	1292	if (timercnt)
1087	{	1293	{
1088	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1294	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1089	if (block > to) block = to;	1295	if (block > to) block = to;
1090	}	1296	}
1091		1297
		1298	#if EV_PERIODICS
1092	if (periodiccnt)	1299	if (periodiccnt)
1093	{	1300	{
1094	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1301	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1095	if (block > to) block = to;	1302	if (block > to) block = to;
1096	}	1303	}
		1304	#endif
1097		1305
1098	if (block < 0.) block = 0.;	1306	if (expect_false (block < 0.)) block = 0.;
1099	}	1307	}
1100		1308
1101	method_poll (EV_A_ block);	1309	backend_poll (EV_A_ block);
1102		1310
1103	/* update rt_now, do magic */	1311	/* update ev_rt_now, do magic */
1104	time_update (EV_A);	1312	time_update (EV_A);
1105		1313
1106	/* queue pending timers and reschedule them */	1314	/* queue pending timers and reschedule them */
1107	timers_reify (EV_A); /* relative timers called last */	1315	timers_reify (EV_A); /* relative timers called last */
		1316	#if EV_PERIODICS
1108	periodics_reify (EV_A); /* absolute timers called first */	1317	periodics_reify (EV_A); /* absolute timers called first */
		1318	#endif
1109		1319
1110	/* queue idle watchers unless io or timers are pending */	1320	/* queue idle watchers unless io or timers are pending */
1111	if (!pendingcnt)	1321	if (idlecnt && !any_pending (EV_A))
1112	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1322	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1113		1323
1114	/* queue check watchers, to be executed first */	1324	/* queue check watchers, to be executed first */
1115	if (checkcnt)	1325	if (expect_false (checkcnt))
1116	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1326	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1117		1327
1118	call_pending (EV_A);	1328	call_pending (EV_A);
		1329
		1330	if (expect_false (loop_done))
		1331	break;
1119	}	1332	}
1120	while (activecnt && !loop_done);
1121		1333
1122	if (loop_done != 2)	1334	if (loop_done != 2)
1123	loop_done = 0;	1335	loop_done = 0;
1124	}	1336	}
1125		1337
…		…
1185	void	1397	void
1186	ev_io_start (EV_P_ struct ev_io *w)	1398	ev_io_start (EV_P_ struct ev_io *w)
1187	{	1399	{
1188	int fd = w->fd;	1400	int fd = w->fd;
1189		1401
1190	if (ev_is_active (w))	1402	if (expect_false (ev_is_active (w)))
1191	return;	1403	return;
1192		1404
1193	assert (("ev_io_start called with negative fd", fd >= 0));	1405	assert (("ev_io_start called with negative fd", fd >= 0));
1194		1406
1195	ev_start (EV_A_ (W)w, 1);	1407	ev_start (EV_A_ (W)w, 1);
1196	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1408	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1197	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1409	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1198		1410
1199	fd_change (EV_A_ fd);	1411	fd_change (EV_A_ fd);
1200	}	1412	}
1201		1413
1202	void	1414	void
1203	ev_io_stop (EV_P_ struct ev_io *w)	1415	ev_io_stop (EV_P_ struct ev_io *w)
1204	{	1416	{
1205	ev_clear_pending (EV_A_ (W)w);	1417	ev_clear_pending (EV_A_ (W)w);
1206	if (!ev_is_active (w))	1418	if (expect_false (!ev_is_active (w)))
1207	return;	1419	return;
		1420
		1421	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1208		1422
1209	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1423	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1210	ev_stop (EV_A_ (W)w);	1424	ev_stop (EV_A_ (W)w);
1211		1425
1212	fd_change (EV_A_ w->fd);	1426	fd_change (EV_A_ w->fd);
1213	}	1427	}
1214		1428
1215	void	1429	void
1216	ev_timer_start (EV_P_ struct ev_timer *w)	1430	ev_timer_start (EV_P_ struct ev_timer *w)
1217	{	1431	{
1218	if (ev_is_active (w))	1432	if (expect_false (ev_is_active (w)))
1219	return;	1433	return;
1220		1434
1221	((WT)w)->at += mn_now;	1435	((WT)w)->at += mn_now;
1222		1436
1223	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.));
1224		1438
1225	ev_start (EV_A_ (W)w, ++timercnt);	1439	ev_start (EV_A_ (W)w, ++timercnt);
1226	array_needsize (timers, timermax, timercnt, );	1440	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1227	timers [timercnt - 1] = w;	1441	timers [timercnt - 1] = w;
1228	upheap ((WT *)timers, timercnt - 1);	1442	upheap ((WT *)timers, timercnt - 1);
1229		1443
1230	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1444	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1231	}	1445	}
1232		1446
1233	void	1447	void
1234	ev_timer_stop (EV_P_ struct ev_timer *w)	1448	ev_timer_stop (EV_P_ struct ev_timer *w)
1235	{	1449	{
1236	ev_clear_pending (EV_A_ (W)w);	1450	ev_clear_pending (EV_A_ (W)w);
1237	if (!ev_is_active (w))	1451	if (expect_false (!ev_is_active (w)))
1238	return;	1452	return;
1239		1453
1240	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1454	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1241		1455
1242	if (((W)w)->active < timercnt--)	1456	if (expect_true (((W)w)->active < timercnt--))
1243	{	1457	{
1244	timers [((W)w)->active - 1] = timers [timercnt];	1458	timers [((W)w)->active - 1] = timers [timercnt];
1245	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1459	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1246	}	1460	}
1247		1461
1248	((WT)w)->at = w->repeat;	1462	((WT)w)->at -= mn_now;
1249		1463
1250	ev_stop (EV_A_ (W)w);	1464	ev_stop (EV_A_ (W)w);
1251	}	1465	}
1252		1466
1253	void	1467	void
…		…
1256	if (ev_is_active (w))	1470	if (ev_is_active (w))
1257	{	1471	{
1258	if (w->repeat)	1472	if (w->repeat)
1259	{	1473	{
1260	((WT)w)->at = mn_now + w->repeat;	1474	((WT)w)->at = mn_now + w->repeat;
1261	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1475	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1262	}	1476	}
1263	else	1477	else
1264	ev_timer_stop (EV_A_ w);	1478	ev_timer_stop (EV_A_ w);
1265	}	1479	}
1266	else if (w->repeat)	1480	else if (w->repeat)
		1481	{
		1482	w->at = w->repeat;
1267	ev_timer_start (EV_A_ w);	1483	ev_timer_start (EV_A_ w);
		1484	}
1268	}	1485	}
1269		1486
		1487	#if EV_PERIODICS
1270	void	1488	void
1271	ev_periodic_start (EV_P_ struct ev_periodic *w)	1489	ev_periodic_start (EV_P_ struct ev_periodic *w)
1272	{	1490	{
1273	if (ev_is_active (w))	1491	if (expect_false (ev_is_active (w)))
1274	return;	1492	return;
1275		1493
		1494	if (w->reschedule_cb)
		1495	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1496	else if (w->interval)
		1497	{
1276	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1498	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1277
1278	/* 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 */
1279	if (w->interval)
1280	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1500	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1501	}
1281		1502
1282	ev_start (EV_A_ (W)w, ++periodiccnt);	1503	ev_start (EV_A_ (W)w, ++periodiccnt);
1283	array_needsize (periodics, periodicmax, periodiccnt, );	1504	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1284	periodics [periodiccnt - 1] = w;	1505	periodics [periodiccnt - 1] = w;
1285	upheap ((WT *)periodics, periodiccnt - 1);	1506	upheap ((WT *)periodics, periodiccnt - 1);
1286		1507
1287	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1508	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1288	}	1509	}
1289		1510
1290	void	1511	void
1291	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1512	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1292	{	1513	{
1293	ev_clear_pending (EV_A_ (W)w);	1514	ev_clear_pending (EV_A_ (W)w);
1294	if (!ev_is_active (w))	1515	if (expect_false (!ev_is_active (w)))
1295	return;	1516	return;
1296		1517
1297	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1518	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1298		1519
1299	if (((W)w)->active < periodiccnt--)	1520	if (expect_true (((W)w)->active < periodiccnt--))
1300	{	1521	{
1301	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1522	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1302	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1523	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1303	}	1524	}
1304		1525
1305	ev_stop (EV_A_ (W)w);	1526	ev_stop (EV_A_ (W)w);
1306	}	1527	}
1307		1528
1308	void	1529	void
		1530	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1531	{
		1532	/* TODO: use adjustheap and recalculation */
		1533	ev_periodic_stop (EV_A_ w);
		1534	ev_periodic_start (EV_A_ w);
		1535	}
		1536	#endif
		1537
		1538	void
1309	ev_idle_start (EV_P_ struct ev_idle *w)	1539	ev_idle_start (EV_P_ struct ev_idle *w)
1310	{	1540	{
1311	if (ev_is_active (w))	1541	if (expect_false (ev_is_active (w)))
1312	return;	1542	return;
1313		1543
1314	ev_start (EV_A_ (W)w, ++idlecnt);	1544	ev_start (EV_A_ (W)w, ++idlecnt);
1315	array_needsize (idles, idlemax, idlecnt, );	1545	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1316	idles [idlecnt - 1] = w;	1546	idles [idlecnt - 1] = w;
1317	}	1547	}
1318		1548
1319	void	1549	void
1320	ev_idle_stop (EV_P_ struct ev_idle *w)	1550	ev_idle_stop (EV_P_ struct ev_idle *w)
1321	{	1551	{
1322	ev_clear_pending (EV_A_ (W)w);	1552	ev_clear_pending (EV_A_ (W)w);
1323	if (ev_is_active (w))	1553	if (expect_false (!ev_is_active (w)))
1324	return;	1554	return;
1325		1555
1326	idles [((W)w)->active - 1] = idles [--idlecnt];	1556	idles [((W)w)->active - 1] = idles [--idlecnt];
1327	ev_stop (EV_A_ (W)w);	1557	ev_stop (EV_A_ (W)w);
1328	}	1558	}
1329		1559
1330	void	1560	void
1331	ev_prepare_start (EV_P_ struct ev_prepare *w)	1561	ev_prepare_start (EV_P_ struct ev_prepare *w)
1332	{	1562	{
1333	if (ev_is_active (w))	1563	if (expect_false (ev_is_active (w)))
1334	return;	1564	return;
1335		1565
1336	ev_start (EV_A_ (W)w, ++preparecnt);	1566	ev_start (EV_A_ (W)w, ++preparecnt);
1337	array_needsize (prepares, preparemax, preparecnt, );	1567	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1338	prepares [preparecnt - 1] = w;	1568	prepares [preparecnt - 1] = w;
1339	}	1569	}
1340		1570
1341	void	1571	void
1342	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1572	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1343	{	1573	{
1344	ev_clear_pending (EV_A_ (W)w);	1574	ev_clear_pending (EV_A_ (W)w);
1345	if (ev_is_active (w))	1575	if (expect_false (!ev_is_active (w)))
1346	return;	1576	return;
1347		1577
1348	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1578	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1349	ev_stop (EV_A_ (W)w);	1579	ev_stop (EV_A_ (W)w);
1350	}	1580	}
1351		1581
1352	void	1582	void
1353	ev_check_start (EV_P_ struct ev_check *w)	1583	ev_check_start (EV_P_ struct ev_check *w)
1354	{	1584	{
1355	if (ev_is_active (w))	1585	if (expect_false (ev_is_active (w)))
1356	return;	1586	return;
1357		1587
1358	ev_start (EV_A_ (W)w, ++checkcnt);	1588	ev_start (EV_A_ (W)w, ++checkcnt);
1359	array_needsize (checks, checkmax, checkcnt, );	1589	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1360	checks [checkcnt - 1] = w;	1590	checks [checkcnt - 1] = w;
1361	}	1591	}
1362		1592
1363	void	1593	void
1364	ev_check_stop (EV_P_ struct ev_check *w)	1594	ev_check_stop (EV_P_ struct ev_check *w)
1365	{	1595	{
1366	ev_clear_pending (EV_A_ (W)w);	1596	ev_clear_pending (EV_A_ (W)w);
1367	if (ev_is_active (w))	1597	if (expect_false (!ev_is_active (w)))
1368	return;	1598	return;
1369		1599
1370	checks [((W)w)->active - 1] = checks [--checkcnt];	1600	checks [((W)w)->active - 1] = checks [--checkcnt];
1371	ev_stop (EV_A_ (W)w);	1601	ev_stop (EV_A_ (W)w);
1372	}	1602	}
…		…
1377		1607
1378	void	1608	void
1379	ev_signal_start (EV_P_ struct ev_signal *w)	1609	ev_signal_start (EV_P_ struct ev_signal *w)
1380	{	1610	{
1381	#if EV_MULTIPLICITY	1611	#if EV_MULTIPLICITY
1382	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));
1383	#endif	1613	#endif
1384	if (ev_is_active (w))	1614	if (expect_false (ev_is_active (w)))
1385	return;	1615	return;
1386		1616
1387	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));
1388		1618
1389	ev_start (EV_A_ (W)w, 1);	1619	ev_start (EV_A_ (W)w, 1);
1390	array_needsize (signals, signalmax, w->signum, signals_init);	1620	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1391	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1621	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1392		1622
1393	if (!((WL)w)->next)	1623	if (!((WL)w)->next)
1394	{	1624	{
1395	#if WIN32	1625	#if _WIN32
1396	signal (w->signum, sighandler);	1626	signal (w->signum, sighandler);
1397	#else	1627	#else
1398	struct sigaction sa;	1628	struct sigaction sa;
1399	sa.sa_handler = sighandler;	1629	sa.sa_handler = sighandler;
1400	sigfillset (&sa.sa_mask);	1630	sigfillset (&sa.sa_mask);
…		…
1406		1636
1407	void	1637	void
1408	ev_signal_stop (EV_P_ struct ev_signal *w)	1638	ev_signal_stop (EV_P_ struct ev_signal *w)
1409	{	1639	{
1410	ev_clear_pending (EV_A_ (W)w);	1640	ev_clear_pending (EV_A_ (W)w);
1411	if (!ev_is_active (w))	1641	if (expect_false (!ev_is_active (w)))
1412	return;	1642	return;
1413		1643
1414	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1644	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1415	ev_stop (EV_A_ (W)w);	1645	ev_stop (EV_A_ (W)w);
1416		1646
…		…
1420		1650
1421	void	1651	void
1422	ev_child_start (EV_P_ struct ev_child *w)	1652	ev_child_start (EV_P_ struct ev_child *w)
1423	{	1653	{
1424	#if EV_MULTIPLICITY	1654	#if EV_MULTIPLICITY
1425	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));
1426	#endif	1656	#endif
1427	if (ev_is_active (w))	1657	if (expect_false (ev_is_active (w)))
1428	return;	1658	return;
1429		1659
1430	ev_start (EV_A_ (W)w, 1);	1660	ev_start (EV_A_ (W)w, 1);
1431	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1661	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1432	}	1662	}
1433		1663
1434	void	1664	void
1435	ev_child_stop (EV_P_ struct ev_child *w)	1665	ev_child_stop (EV_P_ struct ev_child *w)
1436	{	1666	{
1437	ev_clear_pending (EV_A_ (W)w);	1667	ev_clear_pending (EV_A_ (W)w);
1438	if (ev_is_active (w))	1668	if (expect_false (!ev_is_active (w)))
1439	return;	1669	return;
1440		1670
1441	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1671	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1442	ev_stop (EV_A_ (W)w);	1672	ev_stop (EV_A_ (W)w);
1443	}	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
1444		1712
1445	/*****************************************************************************/	1713	/*****************************************************************************/
1446		1714
1447	struct ev_once	1715	struct ev_once
1448	{	1716	{
…		…
1478	}	1746	}
1479		1747
1480	void	1748	void
1481	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)
1482	{	1750	{
1483	struct ev_once *once = ev_malloc (sizeof (struct ev_once));	1751	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1484		1752
1485	if (!once)	1753	if (expect_false (!once))
		1754	{
1486	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1755	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1487	else	1756	return;
1488	{	1757	}
		1758
1489	once->cb = cb;	1759	once->cb = cb;
1490	once->arg = arg;	1760	once->arg = arg;
1491		1761
1492	ev_watcher_init (&once->io, once_cb_io);	1762	ev_init (&once->io, once_cb_io);
1493	if (fd >= 0)	1763	if (fd >= 0)
1494	{	1764	{
1495	ev_io_set (&once->io, fd, events);	1765	ev_io_set (&once->io, fd, events);
1496	ev_io_start (EV_A_ &once->io);	1766	ev_io_start (EV_A_ &once->io);
1497	}	1767	}
1498		1768
1499	ev_watcher_init (&once->to, once_cb_to);	1769	ev_init (&once->to, once_cb_to);
1500	if (timeout >= 0.)	1770	if (timeout >= 0.)
1501	{	1771	{
1502	ev_timer_set (&once->to, timeout, 0.);	1772	ev_timer_set (&once->to, timeout, 0.);
1503	ev_timer_start (EV_A_ &once->to);	1773	ev_timer_start (EV_A_ &once->to);
1504	}
1505	}	1774	}
1506	}	1775	}
1507		1776
		1777	#ifdef __cplusplus
		1778	}
		1779	#endif
		1780

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