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Comparing libev/ev.c (file contents):
Revision 1.69 by root, Tue Nov 6 00:10:04 2007 UTC vs.
Revision 1.128 by root, Thu Nov 22 12:28:27 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
32	# include "config.h"	37	# include "config.h"
33		38
34	# if HAVE_CLOCK_GETTIME	39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	44	# define EV_USE_REALTIME 1
		45	# endif
		46	# else
		47	# ifndef EV_USE_MONOTONIC
		48	# define EV_USE_MONOTONIC 0
		49	# endif
		50	# ifndef EV_USE_REALTIME
		51	# define EV_USE_REALTIME 0
		52	# endif
37	# endif	53	# endif
38		54
		55	# ifndef EV_USE_SELECT
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	56	# if HAVE_SELECT && HAVE_SYS_SELECT_H
40	# define EV_USE_SELECT 1	57	# define EV_USE_SELECT 1
		58	# else
		59	# define EV_USE_SELECT 0
		60	# endif
41	# endif	61	# endif
42		62
		63	# ifndef EV_USE_POLL
43	# if HAVE_POLL && HAVE_POLL_H	64	# if HAVE_POLL && HAVE_POLL_H
44	# define EV_USE_POLL 1	65	# define EV_USE_POLL 1
		66	# else
		67	# define EV_USE_POLL 0
		68	# endif
45	# endif	69	# endif
46		70
		71	# ifndef EV_USE_EPOLL
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	72	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48	# define EV_USE_EPOLL 1	73	# define EV_USE_EPOLL 1
		74	# else
		75	# define EV_USE_EPOLL 0
		76	# endif
49	# endif	77	# endif
50		78
		79	# ifndef EV_USE_KQUEUE
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	80	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# define EV_USE_KQUEUE 1	81	# define EV_USE_KQUEUE 1
		82	# else
		83	# define EV_USE_KQUEUE 0
		84	# endif
		85	# endif
		86
		87	# ifndef EV_USE_PORT
		88	# if HAVE_PORT_H && HAVE_PORT_CREATE
		89	# define EV_USE_PORT 1
		90	# else
		91	# define EV_USE_PORT 0
		92	# endif
53	# endif	93	# endif
54		94
55	#endif	95	#endif
56		96
57	#include <math.h>	97	#include <math.h>
58	#include <stdlib.h>	98	#include <stdlib.h>
59	#include <unistd.h>
60	#include <fcntl.h>	99	#include <fcntl.h>
61	#include <signal.h>
62	#include <stddef.h>	100	#include <stddef.h>
63		101
64	#include <stdio.h>	102	#include <stdio.h>
65		103
66	#include <assert.h>	104	#include <assert.h>
67	#include <errno.h>	105	#include <errno.h>
68	#include <sys/types.h>	106	#include <sys/types.h>
		107	#include <time.h>
		108
		109	#include <signal.h>
		110
69	#ifndef WIN32	111	#ifndef _WIN32
		112	# include <unistd.h>
		113	# include <sys/time.h>
70	# include <sys/wait.h>	114	# include <sys/wait.h>
		115	#else
		116	# define WIN32_LEAN_AND_MEAN
		117	# include <windows.h>
		118	# ifndef EV_SELECT_IS_WINSOCKET
		119	# define EV_SELECT_IS_WINSOCKET 1
71	#endif	120	# endif
72	#include <sys/time.h>	121	#endif
73	#include <time.h>
74		122
75	/**/	123	/**/
76		124
77	#ifndef EV_USE_MONOTONIC	125	#ifndef EV_USE_MONOTONIC
78	# define EV_USE_MONOTONIC 1	126	# define EV_USE_MONOTONIC 0
		127	#endif
		128
		129	#ifndef EV_USE_REALTIME
		130	# define EV_USE_REALTIME 0
79	#endif	131	#endif
80		132
81	#ifndef EV_USE_SELECT	133	#ifndef EV_USE_SELECT
82	# define EV_USE_SELECT 1	134	# define EV_USE_SELECT 1
83	#endif	135	#endif
84		136
85	#ifndef EV_USE_POLL	137	#ifndef EV_USE_POLL
86	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	138	# ifdef _WIN32
		139	# define EV_USE_POLL 0
		140	# else
		141	# define EV_USE_POLL 1
		142	# endif
87	#endif	143	#endif
88		144
89	#ifndef EV_USE_EPOLL	145	#ifndef EV_USE_EPOLL
90	# define EV_USE_EPOLL 0	146	# define EV_USE_EPOLL 0
91	#endif	147	#endif
92		148
93	#ifndef EV_USE_KQUEUE	149	#ifndef EV_USE_KQUEUE
94	# define EV_USE_KQUEUE 0	150	# define EV_USE_KQUEUE 0
95	#endif	151	#endif
96		152
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	153	#ifndef EV_USE_PORT
106	# define EV_USE_REALTIME 1	154	# define EV_USE_PORT 0
107	#endif	155	#endif
108		156
109	/**/	157	/**/
		158
		159	/* darwin simply cannot be helped */
		160	#ifdef __APPLE__
		161	# undef EV_USE_POLL
		162	# undef EV_USE_KQUEUE
		163	#endif
110		164
111	#ifndef CLOCK_MONOTONIC	165	#ifndef CLOCK_MONOTONIC
112	# undef EV_USE_MONOTONIC	166	# undef EV_USE_MONOTONIC
113	# define EV_USE_MONOTONIC 0	167	# define EV_USE_MONOTONIC 0
114	#endif	168	#endif
…		…
116	#ifndef CLOCK_REALTIME	170	#ifndef CLOCK_REALTIME
117	# undef EV_USE_REALTIME	171	# undef EV_USE_REALTIME
118	# define EV_USE_REALTIME 0	172	# define EV_USE_REALTIME 0
119	#endif	173	#endif
120		174
		175	#if EV_SELECT_IS_WINSOCKET
		176	# include <winsock.h>
		177	#endif
		178
121	/**/	179	/**/
122		180
123	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	181	#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) */	182	#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 */	183	#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 */	184	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
127		185
		186	#ifdef EV_H
		187	# include EV_H
		188	#else
128	#include "ev.h"	189	# include "ev.h"
		190	#endif
129		191
130	#if __GNUC__ >= 3	192	#if __GNUC__ >= 3
131	# define expect(expr,value) __builtin_expect ((expr),(value))	193	# define expect(expr,value) __builtin_expect ((expr),(value))
132	# define inline inline	194	# define inline static inline
133	#else	195	#else
134	# define expect(expr,value) (expr)	196	# define expect(expr,value) (expr)
135	# define inline static	197	# define inline static
136	#endif	198	#endif
137		199
…		…
139	#define expect_true(expr) expect ((expr) != 0, 1)	201	#define expect_true(expr) expect ((expr) != 0, 1)
140		202
141	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	203	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	204	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
143		205
		206	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		207	#define EMPTY2(a,b) /* used to suppress some warnings */
		208
144	typedef struct ev_watcher *W;	209	typedef struct ev_watcher *W;
145	typedef struct ev_watcher_list *WL;	210	typedef struct ev_watcher_list *WL;
146	typedef struct ev_watcher_time *WT;	211	typedef struct ev_watcher_time *WT;
147		212
148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	213	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149		214
150	#if WIN32	215	#ifdef _WIN32
151	/* note: the comment below could not be substantiated, but what would I care */	216	# include "ev_win32.c"
152	/* MSDN says this is required to handle SIGFPE */
153	volatile double SIGFPE_REQ = 0.0f;
154	#endif	217	#endif
155		218
156	/*****************************************************************************/	219	/*****************************************************************************/
157		220
158	static void (*syserr_cb)(void);	221	static void (*syserr_cb)(const char *msg);
159		222
160	void ev_set_syserr_cb (void (*cb)(void))	223	void ev_set_syserr_cb (void (*cb)(const char *msg))
161	{	224	{
162	syserr_cb = cb;	225	syserr_cb = cb;
163	}	226	}
164		227
165	static void	228	static void
166	syserr (void)	229	syserr (const char *msg)
167	{	230	{
		231	if (!msg)
		232	msg = "(libev) system error";
		233
168	if (syserr_cb)	234	if (syserr_cb)
169	syserr_cb ();	235	syserr_cb (msg);
170	else	236	else
171	{	237	{
172	perror ("libev");	238	perror (msg);
173	abort ();	239	abort ();
174	}	240	}
175	}	241	}
176		242
177	static void *(*alloc)(void *ptr, long size);	243	static void *(*alloc)(void *ptr, long size);
…		…
203	typedef struct	269	typedef struct
204	{	270	{
205	WL head;	271	WL head;
206	unsigned char events;	272	unsigned char events;
207	unsigned char reify;	273	unsigned char reify;
		274	#if EV_SELECT_IS_WINSOCKET
		275	SOCKET handle;
		276	#endif
208	} ANFD;	277	} ANFD;
209		278
210	typedef struct	279	typedef struct
211	{	280	{
212	W w;	281	W w;
213	int events;	282	int events;
214	} ANPENDING;	283	} ANPENDING;
215		284
216	#if EV_MULTIPLICITY	285	#if EV_MULTIPLICITY
217		286
218	struct ev_loop	287	struct ev_loop
219	{	288	{
		289	ev_tstamp ev_rt_now;
		290	#define ev_rt_now ((loop)->ev_rt_now)
220	# define VAR(name,decl) decl;	291	#define VAR(name,decl) decl;
221	# include "ev_vars.h"	292	#include "ev_vars.h"
222	};
223	# undef VAR	293	#undef VAR
		294	};
224	# include "ev_wrap.h"	295	#include "ev_wrap.h"
		296
		297	static struct ev_loop default_loop_struct;
		298	struct ev_loop *ev_default_loop_ptr;
225		299
226	#else	300	#else
227		301
		302	ev_tstamp ev_rt_now;
228	# define VAR(name,decl) static decl;	303	#define VAR(name,decl) static decl;
229	# include "ev_vars.h"	304	#include "ev_vars.h"
230	# undef VAR	305	#undef VAR
		306
		307	static int ev_default_loop_ptr;
231		308
232	#endif	309	#endif
233		310
234	/*****************************************************************************/	311	/*****************************************************************************/
235		312
236	inline ev_tstamp	313	ev_tstamp
237	ev_time (void)	314	ev_time (void)
238	{	315	{
239	#if EV_USE_REALTIME	316	#if EV_USE_REALTIME
240	struct timespec ts;	317	struct timespec ts;
241	clock_gettime (CLOCK_REALTIME, &ts);	318	clock_gettime (CLOCK_REALTIME, &ts);
…		…
260	#endif	337	#endif
261		338
262	return ev_time ();	339	return ev_time ();
263	}	340	}
264		341
		342	#if EV_MULTIPLICITY
265	ev_tstamp	343	ev_tstamp
266	ev_now (EV_P)	344	ev_now (EV_P)
267	{	345	{
268	return rt_now;	346	return ev_rt_now;
269	}	347	}
		348	#endif
270		349
271	#define array_roundsize(base,n) ((n) | 4 & ~3)	350	#define array_roundsize(type,n) (((n) | 4) & ~3)
272		351
273	#define array_needsize(base,cur,cnt,init) \	352	#define array_needsize(type,base,cur,cnt,init) \
274	if (expect_false ((cnt) > cur)) \	353	if (expect_false ((cnt) > cur)) \
275	{ \	354	{ \
276	int newcnt = cur; \	355	int newcnt = cur; \
277	do \	356	do \
278	{ \	357	{ \
279	newcnt = array_roundsize (base, newcnt << 1); \	358	newcnt = array_roundsize (type, newcnt << 1); \
280	} \	359	} \
281	while ((cnt) > newcnt); \	360	while ((cnt) > newcnt); \
282	\	361	\
283	base = ev_realloc (base, sizeof (*base) * (newcnt)); \	362	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
284	init (base + cur, newcnt - cur); \	363	init (base + cur, newcnt - cur); \
285	cur = newcnt; \	364	cur = newcnt; \
286	}	365	}
287		366
288	#define array_slim(stem) \	367	#define array_slim(type,stem) \
289	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	368	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
290	{ \	369	{ \
291	stem ## max = array_roundsize (stem ## cnt >> 1); \	370	stem ## max = array_roundsize (stem ## cnt >> 1); \
292	base = ev_realloc (base, sizeof (*base) * (stem ## max)); \	371	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
293	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	372	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
294	}	373	}
295		374
296	#define array_free(stem, idx) \	375	#define array_free(stem, idx) \
297	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	376	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
…		…
309		388
310	++base;	389	++base;
311	}	390	}
312	}	391	}
313		392
314	static void	393	void
315	event (EV_P_ W w, int events)	394	ev_feed_event (EV_P_ void *w, int revents)
316	{	395	{
317	if (w->pending)	396	W w_ = (W)w;
		397
		398	if (expect_false (w_->pending))
318	{	399	{
319	pendings [ABSPRI (w)][w->pending - 1].events |= events;	400	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
320	return;	401	return;
321	}	402	}
322		403
323	w->pending = ++pendingcnt [ABSPRI (w)];	404	w_->pending = ++pendingcnt [ABSPRI (w_)];
324	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	405	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
325	pendings [ABSPRI (w)][w->pending - 1].w = w;	406	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
326	pendings [ABSPRI (w)][w->pending - 1].events = events;	407	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
327	}	408	}
328		409
329	static void	410	static void
330	queue_events (EV_P_ W *events, int eventcnt, int type)	411	queue_events (EV_P_ W *events, int eventcnt, int type)
331	{	412	{
332	int i;	413	int i;
333		414
334	for (i = 0; i < eventcnt; ++i)	415	for (i = 0; i < eventcnt; ++i)
335	event (EV_A_ events [i], type);	416	ev_feed_event (EV_A_ events [i], type);
336	}	417	}
337		418
338	static void	419	inline void
339	fd_event (EV_P_ int fd, int events)	420	fd_event (EV_P_ int fd, int revents)
340	{	421	{
341	ANFD *anfd = anfds + fd;	422	ANFD *anfd = anfds + fd;
342	struct ev_io *w;	423	struct ev_io *w;
343		424
344	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	425	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
345	{	426	{
346	int ev = w->events & events;	427	int ev = w->events & revents;
347		428
348	if (ev)	429	if (ev)
349	event (EV_A_ (W)w, ev);	430	ev_feed_event (EV_A_ (W)w, ev);
350	}	431	}
		432	}
		433
		434	void
		435	ev_feed_fd_event (EV_P_ int fd, int revents)
		436	{
		437	fd_event (EV_A_ fd, revents);
351	}	438	}
352		439
353	/*****************************************************************************/	440	/*****************************************************************************/
354		441
355	static void	442	inline void
356	fd_reify (EV_P)	443	fd_reify (EV_P)
357	{	444	{
358	int i;	445	int i;
359		446
360	for (i = 0; i < fdchangecnt; ++i)	447	for (i = 0; i < fdchangecnt; ++i)
…		…
366	int events = 0;	453	int events = 0;
367		454
368	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	455	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
369	events |= w->events;	456	events |= w->events;
370		457
		458	#if EV_SELECT_IS_WINSOCKET
		459	if (events)
		460	{
		461	unsigned long argp;
		462	anfd->handle = _get_osfhandle (fd);
		463	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		464	}
		465	#endif
		466
371	anfd->reify = 0;	467	anfd->reify = 0;
372		468
373	method_modify (EV_A_ fd, anfd->events, events);	469	method_modify (EV_A_ fd, anfd->events, events);
374	anfd->events = events;	470	anfd->events = events;
375	}	471	}
…		…
378	}	474	}
379		475
380	static void	476	static void
381	fd_change (EV_P_ int fd)	477	fd_change (EV_P_ int fd)
382	{	478	{
383	if (anfds [fd].reify || fdchangecnt < 0)	479	if (expect_false (anfds [fd].reify))
384	return;	480	return;
385		481
386	anfds [fd].reify = 1;	482	anfds [fd].reify = 1;
387		483
388	++fdchangecnt;	484	++fdchangecnt;
389	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	485	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
390	fdchanges [fdchangecnt - 1] = fd;	486	fdchanges [fdchangecnt - 1] = fd;
391	}	487	}
392		488
393	static void	489	static void
394	fd_kill (EV_P_ int fd)	490	fd_kill (EV_P_ int fd)
…		…
396	struct ev_io *w;	492	struct ev_io *w;
397		493
398	while ((w = (struct ev_io *)anfds [fd].head))	494	while ((w = (struct ev_io *)anfds [fd].head))
399	{	495	{
400	ev_io_stop (EV_A_ w);	496	ev_io_stop (EV_A_ w);
401	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	497	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
402	}	498	}
		499	}
		500
		501	inline int
		502	fd_valid (int fd)
		503	{
		504	#ifdef _WIN32
		505	return _get_osfhandle (fd) != -1;
		506	#else
		507	return fcntl (fd, F_GETFD) != -1;
		508	#endif
403	}	509	}
404		510
405	/* called on EBADF to verify fds */	511	/* called on EBADF to verify fds */
406	static void	512	static void
407	fd_ebadf (EV_P)	513	fd_ebadf (EV_P)
408	{	514	{
409	int fd;	515	int fd;
410		516
411	for (fd = 0; fd < anfdmax; ++fd)	517	for (fd = 0; fd < anfdmax; ++fd)
412	if (anfds [fd].events)	518	if (anfds [fd].events)
413	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	519	if (!fd_valid (fd) == -1 && errno == EBADF)
414	fd_kill (EV_A_ fd);	520	fd_kill (EV_A_ fd);
415	}	521	}
416		522
417	/* called on ENOMEM in select/poll to kill some fds and retry */	523	/* called on ENOMEM in select/poll to kill some fds and retry */
418	static void	524	static void
…		…
426	fd_kill (EV_A_ fd);	532	fd_kill (EV_A_ fd);
427	return;	533	return;
428	}	534	}
429	}	535	}
430		536
431	/* susually called after fork if method needs to re-arm all fds from scratch */	537	/* usually called after fork if method needs to re-arm all fds from scratch */
432	static void	538	static void
433	fd_rearm_all (EV_P)	539	fd_rearm_all (EV_P)
434	{	540	{
435	int fd;	541	int fd;
436		542
…		…
484		590
485	heap [k] = w;	591	heap [k] = w;
486	((W)heap [k])->active = k + 1;	592	((W)heap [k])->active = k + 1;
487	}	593	}
488		594
		595	inline void
		596	adjustheap (WT *heap, int N, int k)
		597	{
		598	upheap (heap, k);
		599	downheap (heap, N, k);
		600	}
		601
489	/*****************************************************************************/	602	/*****************************************************************************/
490		603
491	typedef struct	604	typedef struct
492	{	605	{
493	WL head;	606	WL head;
…		…
514	}	627	}
515		628
516	static void	629	static void
517	sighandler (int signum)	630	sighandler (int signum)
518	{	631	{
519	#if WIN32	632	#if _WIN32
520	signal (signum, sighandler);	633	signal (signum, sighandler);
521	#endif	634	#endif
522		635
523	signals [signum - 1].gotsig = 1;	636	signals [signum - 1].gotsig = 1;
524		637
…		…
529	write (sigpipe [1], &signum, 1);	642	write (sigpipe [1], &signum, 1);
530	errno = old_errno;	643	errno = old_errno;
531	}	644	}
532	}	645	}
533		646
		647	void
		648	ev_feed_signal_event (EV_P_ int signum)
		649	{
		650	WL w;
		651
		652	#if EV_MULTIPLICITY
		653	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		654	#endif
		655
		656	--signum;
		657
		658	if (signum < 0 || signum >= signalmax)
		659	return;
		660
		661	signals [signum].gotsig = 0;
		662
		663	for (w = signals [signum].head; w; w = w->next)
		664	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		665	}
		666
534	static void	667	static void
535	sigcb (EV_P_ struct ev_io *iow, int revents)	668	sigcb (EV_P_ struct ev_io *iow, int revents)
536	{	669	{
537	WL w;
538	int signum;	670	int signum;
539		671
540	read (sigpipe [0], &revents, 1);	672	read (sigpipe [0], &revents, 1);
541	gotsig = 0;	673	gotsig = 0;
542		674
543	for (signum = signalmax; signum--; )	675	for (signum = signalmax; signum--; )
544	if (signals [signum].gotsig)	676	if (signals [signum].gotsig)
545	{	677	ev_feed_signal_event (EV_A_ signum + 1);
546	signals [signum].gotsig = 0;	678	}
547		679
548	for (w = signals [signum].head; w; w = w->next)	680	static void
549	event (EV_A_ (W)w, EV_SIGNAL);	681	fd_intern (int fd)
550	}	682	{
		683	#ifdef _WIN32
		684	int arg = 1;
		685	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		686	#else
		687	fcntl (fd, F_SETFD, FD_CLOEXEC);
		688	fcntl (fd, F_SETFL, O_NONBLOCK);
		689	#endif
551	}	690	}
552		691
553	static void	692	static void
554	siginit (EV_P)	693	siginit (EV_P)
555	{	694	{
556	#ifndef WIN32	695	fd_intern (sigpipe [0]);
557	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	696	fd_intern (sigpipe [1]);
558	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
559
560	/* rather than sort out wether we really need nb, set it */
561	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
562	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
563	#endif
564		697
565	ev_io_set (&sigev, sigpipe [0], EV_READ);	698	ev_io_set (&sigev, sigpipe [0], EV_READ);
566	ev_io_start (EV_A_ &sigev);	699	ev_io_start (EV_A_ &sigev);
567	ev_unref (EV_A); /* child watcher should not keep loop alive */	700	ev_unref (EV_A); /* child watcher should not keep loop alive */
568	}	701	}
569		702
570	/*****************************************************************************/	703	/*****************************************************************************/
571		704
572	#ifndef WIN32
573
574	static struct ev_child *childs [PID_HASHSIZE];	705	static struct ev_child *childs [PID_HASHSIZE];
		706
		707	#ifndef _WIN32
		708
575	static struct ev_signal childev;	709	static struct ev_signal childev;
576		710
577	#ifndef WCONTINUED	711	#ifndef WCONTINUED
578	# define WCONTINUED 0	712	# define WCONTINUED 0
579	#endif	713	#endif
…		…
587	if (w->pid == pid || !w->pid)	721	if (w->pid == pid || !w->pid)
588	{	722	{
589	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	723	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
590	w->rpid = pid;	724	w->rpid = pid;
591	w->rstatus = status;	725	w->rstatus = status;
592	event (EV_A_ (W)w, EV_CHILD);	726	ev_feed_event (EV_A_ (W)w, EV_CHILD);
593	}	727	}
594	}	728	}
595		729
596	static void	730	static void
597	childcb (EV_P_ struct ev_signal *sw, int revents)	731	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
599	int pid, status;	733	int pid, status;
600		734
601	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	735	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
602	{	736	{
603	/* make sure we are called again until all childs have been reaped */	737	/* make sure we are called again until all childs have been reaped */
604	event (EV_A_ (W)sw, EV_SIGNAL);	738	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
605		739
606	child_reap (EV_A_ sw, pid, pid, status);	740	child_reap (EV_A_ sw, pid, pid, status);
607	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	741	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
608	}	742	}
609	}	743	}
610		744
611	#endif	745	#endif
612		746
613	/*****************************************************************************/	747	/*****************************************************************************/
614		748
		749	#if EV_USE_PORT
		750	# include "ev_port.c"
		751	#endif
615	#if EV_USE_KQUEUE	752	#if EV_USE_KQUEUE
616	# include "ev_kqueue.c"	753	# include "ev_kqueue.c"
617	#endif	754	#endif
618	#if EV_USE_EPOLL	755	#if EV_USE_EPOLL
619	# include "ev_epoll.c"	756	# include "ev_epoll.c"
…		…
639		776
640	/* return true if we are running with elevated privileges and should ignore env variables */	777	/* return true if we are running with elevated privileges and should ignore env variables */
641	static int	778	static int
642	enable_secure (void)	779	enable_secure (void)
643	{	780	{
644	#ifdef WIN32	781	#ifdef _WIN32
645	return 0;	782	return 0;
646	#else	783	#else
647	return getuid () != geteuid ()	784	return getuid () != geteuid ()
648	|| getgid () != getegid ();	785	|| getgid () != getegid ();
649	#endif	786	#endif
650	}	787	}
651		788
652	int	789	unsigned int
653	ev_method (EV_P)	790	ev_method (EV_P)
654	{	791	{
655	return method;	792	return method;
656	}	793	}
657		794
658	static void	795	static void
659	loop_init (EV_P_ int methods)	796	loop_init (EV_P_ unsigned int flags)
660	{	797	{
661	if (!method)	798	if (!method)
662	{	799	{
663	#if EV_USE_MONOTONIC	800	#if EV_USE_MONOTONIC
664	{	801	{
…		…
666	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	803	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
667	have_monotonic = 1;	804	have_monotonic = 1;
668	}	805	}
669	#endif	806	#endif
670		807
671	rt_now = ev_time ();	808	ev_rt_now = ev_time ();
672	mn_now = get_clock ();	809	mn_now = get_clock ();
673	now_floor = mn_now;	810	now_floor = mn_now;
674	rtmn_diff = rt_now - mn_now;	811	rtmn_diff = ev_rt_now - mn_now;
675		812
676	if (methods == EVMETHOD_AUTO)	813	if (!(flags & EVFLAG_NOENV)
677	if (!enable_secure () && getenv ("LIBEV_METHODS"))	814	&& !enable_secure ()
		815	&& getenv ("LIBEV_FLAGS"))
678	methods = atoi (getenv ("LIBEV_METHODS"));	816	flags = atoi (getenv ("LIBEV_FLAGS"));
		817
		818	if (!(flags & EVMETHOD_ALL))
679	else	819	{
680	methods = EVMETHOD_ANY;	820	flags |= EVMETHOD_ALL;
		821	#if EV_USE_KQUEUE && !defined (__NetBSD__)
		822	/* kqueue is borked on everything but netbsd apparently */
		823	/* it usually doesn't work correctly on anything but sockets and pipes */
		824	flags &= ~EVMETHOD_KQUEUE;
		825	#endif
		826	}
681		827
682	method = 0;	828	method = 0;
683	#if EV_USE_WIN32	829	#if EV_USE_PORT
684	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	830	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);
685	#endif	831	#endif
686	#if EV_USE_KQUEUE	832	#if EV_USE_KQUEUE
687	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	833	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
688	#endif	834	#endif
689	#if EV_USE_EPOLL	835	#if EV_USE_EPOLL
690	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	836	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
691	#endif	837	#endif
692	#if EV_USE_POLL	838	#if EV_USE_POLL
693	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	839	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
694	#endif	840	#endif
695	#if EV_USE_SELECT	841	#if EV_USE_SELECT
696	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	842	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
697	#endif	843	#endif
698	}
699	}
700		844
701	void	845	ev_init (&sigev, sigcb);
		846	ev_set_priority (&sigev, EV_MAXPRI);
		847	}
		848	}
		849
		850	static void
702	loop_destroy (EV_P)	851	loop_destroy (EV_P)
703	{	852	{
704	int i;	853	int i;
705		854
706	#if EV_USE_WIN32	855	#if EV_USE_PORT
707	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	856	if (method == EVMETHOD_PORT ) port_destroy (EV_A);
708	#endif	857	#endif
709	#if EV_USE_KQUEUE	858	#if EV_USE_KQUEUE
710	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	859	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
711	#endif	860	#endif
712	#if EV_USE_EPOLL	861	#if EV_USE_EPOLL
…		…
720	#endif	869	#endif
721		870
722	for (i = NUMPRI; i--; )	871	for (i = NUMPRI; i--; )
723	array_free (pending, [i]);	872	array_free (pending, [i]);
724		873
		874	/* have to use the microsoft-never-gets-it-right macro */
725	array_free (fdchange, );	875	array_free (fdchange, EMPTY0);
726	array_free (timer, );	876	array_free (timer, EMPTY0);
		877	#if EV_PERIODICS
727	array_free (periodic, );	878	array_free (periodic, EMPTY0);
		879	#endif
728	array_free (idle, );	880	array_free (idle, EMPTY0);
729	array_free (prepare, );	881	array_free (prepare, EMPTY0);
730	array_free (check, );	882	array_free (check, EMPTY0);
731		883
732	method = 0;	884	method = 0;
733	/*TODO*/
734	}	885	}
735		886
736	void	887	static void
737	loop_fork (EV_P)	888	loop_fork (EV_P)
738	{	889	{
739	/*TODO*/	890	#if EV_USE_PORT
		891	if (method == EVMETHOD_PORT ) port_fork (EV_A);
		892	#endif
		893	#if EV_USE_KQUEUE
		894	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		895	#endif
740	#if EV_USE_EPOLL	896	#if EV_USE_EPOLL
741	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	897	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
742	#endif	898	#endif
743	#if EV_USE_KQUEUE	899
744	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	900	if (ev_is_active (&sigev))
745	#endif	901	{
		902	/* default loop */
		903
		904	ev_ref (EV_A);
		905	ev_io_stop (EV_A_ &sigev);
		906	close (sigpipe [0]);
		907	close (sigpipe [1]);
		908
		909	while (pipe (sigpipe))
		910	syserr ("(libev) error creating pipe");
		911
		912	siginit (EV_A);
		913	}
		914
		915	postfork = 0;
746	}	916	}
747		917
748	#if EV_MULTIPLICITY	918	#if EV_MULTIPLICITY
749	struct ev_loop *	919	struct ev_loop *
750	ev_loop_new (int methods)	920	ev_loop_new (unsigned int flags)
751	{	921	{
752	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	922	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
753		923
754	memset (loop, 0, sizeof (struct ev_loop));	924	memset (loop, 0, sizeof (struct ev_loop));
755		925
756	loop_init (EV_A_ methods);	926	loop_init (EV_A_ flags);
757		927
758	if (ev_method (EV_A))	928	if (ev_method (EV_A))
759	return loop;	929	return loop;
760		930
761	return 0;	931	return 0;
…		…
769	}	939	}
770		940
771	void	941	void
772	ev_loop_fork (EV_P)	942	ev_loop_fork (EV_P)
773	{	943	{
774	loop_fork (EV_A);	944	postfork = 1;
775	}	945	}
776		946
777	#endif	947	#endif
778		948
779	#if EV_MULTIPLICITY	949	#if EV_MULTIPLICITY
780	struct ev_loop default_loop_struct;
781	static struct ev_loop *default_loop;
782
783	struct ev_loop *	950	struct ev_loop *
		951	ev_default_loop_init (unsigned int flags)
784	#else	952	#else
785	static int default_loop;
786
787	int	953	int
		954	ev_default_loop (unsigned int flags)
788	#endif	955	#endif
789	ev_default_loop (int methods)
790	{	956	{
791	if (sigpipe [0] == sigpipe [1])	957	if (sigpipe [0] == sigpipe [1])
792	if (pipe (sigpipe))	958	if (pipe (sigpipe))
793	return 0;	959	return 0;
794		960
795	if (!default_loop)	961	if (!ev_default_loop_ptr)
796	{	962	{
797	#if EV_MULTIPLICITY	963	#if EV_MULTIPLICITY
798	struct ev_loop *loop = default_loop = &default_loop_struct;	964	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
799	#else	965	#else
800	default_loop = 1;	966	ev_default_loop_ptr = 1;
801	#endif	967	#endif
802		968
803	loop_init (EV_A_ methods);	969	loop_init (EV_A_ flags);
804		970
805	if (ev_method (EV_A))	971	if (ev_method (EV_A))
806	{	972	{
807	ev_watcher_init (&sigev, sigcb);
808	ev_set_priority (&sigev, EV_MAXPRI);
809	siginit (EV_A);	973	siginit (EV_A);
810		974
811	#ifndef WIN32	975	#ifndef _WIN32
812	ev_signal_init (&childev, childcb, SIGCHLD);	976	ev_signal_init (&childev, childcb, SIGCHLD);
813	ev_set_priority (&childev, EV_MAXPRI);	977	ev_set_priority (&childev, EV_MAXPRI);
814	ev_signal_start (EV_A_ &childev);	978	ev_signal_start (EV_A_ &childev);
815	ev_unref (EV_A); /* child watcher should not keep loop alive */	979	ev_unref (EV_A); /* child watcher should not keep loop alive */
816	#endif	980	#endif
817	}	981	}
818	else	982	else
819	default_loop = 0;	983	ev_default_loop_ptr = 0;
820	}	984	}
821		985
822	return default_loop;	986	return ev_default_loop_ptr;
823	}	987	}
824		988
825	void	989	void
826	ev_default_destroy (void)	990	ev_default_destroy (void)
827	{	991	{
828	#if EV_MULTIPLICITY	992	#if EV_MULTIPLICITY
829	struct ev_loop *loop = default_loop;	993	struct ev_loop *loop = ev_default_loop_ptr;
830	#endif	994	#endif
831		995
		996	#ifndef _WIN32
832	ev_ref (EV_A); /* child watcher */	997	ev_ref (EV_A); /* child watcher */
833	ev_signal_stop (EV_A_ &childev);	998	ev_signal_stop (EV_A_ &childev);
		999	#endif
834		1000
835	ev_ref (EV_A); /* signal watcher */	1001	ev_ref (EV_A); /* signal watcher */
836	ev_io_stop (EV_A_ &sigev);	1002	ev_io_stop (EV_A_ &sigev);
837		1003
838	close (sigpipe [0]); sigpipe [0] = 0;	1004	close (sigpipe [0]); sigpipe [0] = 0;
…		…
843		1009
844	void	1010	void
845	ev_default_fork (void)	1011	ev_default_fork (void)
846	{	1012	{
847	#if EV_MULTIPLICITY	1013	#if EV_MULTIPLICITY
848	struct ev_loop *loop = default_loop;	1014	struct ev_loop *loop = ev_default_loop_ptr;
849	#endif	1015	#endif
850		1016
851	loop_fork (EV_A);	1017	if (method)
852		1018	postfork = 1;
853	ev_io_stop (EV_A_ &sigev);
854	close (sigpipe [0]);
855	close (sigpipe [1]);
856	pipe (sigpipe);
857
858	ev_ref (EV_A); /* signal watcher */
859	siginit (EV_A);
860	}	1019	}
861		1020
862	/*****************************************************************************/	1021	/*****************************************************************************/
863		1022
864	static void	1023	static int
		1024	any_pending (EV_P)
		1025	{
		1026	int pri;
		1027
		1028	for (pri = NUMPRI; pri--; )
		1029	if (pendingcnt [pri])
		1030	return 1;
		1031
		1032	return 0;
		1033	}
		1034
		1035	inline void
865	call_pending (EV_P)	1036	call_pending (EV_P)
866	{	1037	{
867	int pri;	1038	int pri;
868		1039
869	for (pri = NUMPRI; pri--; )	1040	for (pri = NUMPRI; pri--; )
870	while (pendingcnt [pri])	1041	while (pendingcnt [pri])
871	{	1042	{
872	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1043	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
873		1044
874	if (p->w)	1045	if (expect_true (p->w))
875	{	1046	{
876	p->w->pending = 0;	1047	p->w->pending = 0;
877	p->w->cb (EV_A_ p->w, p->events);	1048	EV_CB_INVOKE (p->w, p->events);
878	}	1049	}
879	}	1050	}
880	}	1051	}
881		1052
882	static void	1053	inline void
883	timers_reify (EV_P)	1054	timers_reify (EV_P)
884	{	1055	{
885	while (timercnt && ((WT)timers [0])->at <= mn_now)	1056	while (timercnt && ((WT)timers [0])->at <= mn_now)
886	{	1057	{
887	struct ev_timer *w = timers [0];	1058	struct ev_timer *w = timers [0];
…		…
890		1061
891	/* first reschedule or stop timer */	1062	/* first reschedule or stop timer */
892	if (w->repeat)	1063	if (w->repeat)
893	{	1064	{
894	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1065	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1066
895	((WT)w)->at = mn_now + w->repeat;	1067	((WT)w)->at += w->repeat;
		1068	if (((WT)w)->at < mn_now)
		1069	((WT)w)->at = mn_now;
		1070
896	downheap ((WT *)timers, timercnt, 0);	1071	downheap ((WT *)timers, timercnt, 0);
897	}	1072	}
898	else	1073	else
899	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1074	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
900		1075
901	event (EV_A_ (W)w, EV_TIMEOUT);	1076	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
902	}	1077	}
903	}	1078	}
904		1079
905	static void	1080	#if EV_PERIODICS
		1081	inline void
906	periodics_reify (EV_P)	1082	periodics_reify (EV_P)
907	{	1083	{
908	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1084	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
909	{	1085	{
910	struct ev_periodic *w = periodics [0];	1086	struct ev_periodic *w = periodics [0];
911		1087
912	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1088	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
913		1089
914	/* first reschedule or stop timer */	1090	/* first reschedule or stop timer */
915	if (w->interval)	1091	if (w->reschedule_cb)
916	{	1092	{
		1093	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1094	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1095	downheap ((WT *)periodics, periodiccnt, 0);
		1096	}
		1097	else if (w->interval)
		1098	{
917	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1099	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
918	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1100	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
919	downheap ((WT *)periodics, periodiccnt, 0);	1101	downheap ((WT *)periodics, periodiccnt, 0);
920	}	1102	}
921	else	1103	else
922	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1104	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
923		1105
924	event (EV_A_ (W)w, EV_PERIODIC);	1106	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
925	}	1107	}
926	}	1108	}
927		1109
928	static void	1110	static void
929	periodics_reschedule (EV_P)	1111	periodics_reschedule (EV_P)
…		…
933	/* adjust periodics after time jump */	1115	/* adjust periodics after time jump */
934	for (i = 0; i < periodiccnt; ++i)	1116	for (i = 0; i < periodiccnt; ++i)
935	{	1117	{
936	struct ev_periodic *w = periodics [i];	1118	struct ev_periodic *w = periodics [i];
937		1119
		1120	if (w->reschedule_cb)
		1121	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
938	if (w->interval)	1122	else if (w->interval)
939	{
940	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1123	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
941
942	if (fabs (diff) >= 1e-4)
943	{
944	ev_periodic_stop (EV_A_ w);
945	ev_periodic_start (EV_A_ w);
946
947	i = 0; /* restart loop, inefficient, but time jumps should be rare */
948	}
949	}
950	}	1124	}
		1125
		1126	/* now rebuild the heap */
		1127	for (i = periodiccnt >> 1; i--; )
		1128	downheap ((WT *)periodics, periodiccnt, i);
951	}	1129	}
		1130	#endif
952		1131
953	inline int	1132	inline int
954	time_update_monotonic (EV_P)	1133	time_update_monotonic (EV_P)
955	{	1134	{
956	mn_now = get_clock ();	1135	mn_now = get_clock ();
957		1136
958	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1137	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
959	{	1138	{
960	rt_now = rtmn_diff + mn_now;	1139	ev_rt_now = rtmn_diff + mn_now;
961	return 0;	1140	return 0;
962	}	1141	}
963	else	1142	else
964	{	1143	{
965	now_floor = mn_now;	1144	now_floor = mn_now;
966	rt_now = ev_time ();	1145	ev_rt_now = ev_time ();
967	return 1;	1146	return 1;
968	}	1147	}
969	}	1148	}
970		1149
971	static void	1150	inline void
972	time_update (EV_P)	1151	time_update (EV_P)
973	{	1152	{
974	int i;	1153	int i;
975		1154
976	#if EV_USE_MONOTONIC	1155	#if EV_USE_MONOTONIC
…		…
980	{	1159	{
981	ev_tstamp odiff = rtmn_diff;	1160	ev_tstamp odiff = rtmn_diff;
982		1161
983	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1162	for (i = 4; --i; ) /* loop a few times, before making important decisions */
984	{	1163	{
985	rtmn_diff = rt_now - mn_now;	1164	rtmn_diff = ev_rt_now - mn_now;
986		1165
987	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1166	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
988	return; /* all is well */	1167	return; /* all is well */
989		1168
990	rt_now = ev_time ();	1169	ev_rt_now = ev_time ();
991	mn_now = get_clock ();	1170	mn_now = get_clock ();
992	now_floor = mn_now;	1171	now_floor = mn_now;
993	}	1172	}
994		1173
		1174	# if EV_PERIODICS
995	periodics_reschedule (EV_A);	1175	periodics_reschedule (EV_A);
		1176	# endif
996	/* no timer adjustment, as the monotonic clock doesn't jump */	1177	/* no timer adjustment, as the monotonic clock doesn't jump */
997	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1178	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
998	}	1179	}
999	}	1180	}
1000	else	1181	else
1001	#endif	1182	#endif
1002	{	1183	{
1003	rt_now = ev_time ();	1184	ev_rt_now = ev_time ();
1004		1185
1005	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1186	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1006	{	1187	{
		1188	#if EV_PERIODICS
1007	periodics_reschedule (EV_A);	1189	periodics_reschedule (EV_A);
		1190	#endif
1008		1191
1009	/* adjust timers. this is easy, as the offset is the same for all */	1192	/* adjust timers. this is easy, as the offset is the same for all */
1010	for (i = 0; i < timercnt; ++i)	1193	for (i = 0; i < timercnt; ++i)
1011	((WT)timers [i])->at += rt_now - mn_now;	1194	((WT)timers [i])->at += ev_rt_now - mn_now;
1012	}	1195	}
1013		1196
1014	mn_now = rt_now;	1197	mn_now = ev_rt_now;
1015	}	1198	}
1016	}	1199	}
1017		1200
1018	void	1201	void
1019	ev_ref (EV_P)	1202	ev_ref (EV_P)
…		…
1033	ev_loop (EV_P_ int flags)	1216	ev_loop (EV_P_ int flags)
1034	{	1217	{
1035	double block;	1218	double block;
1036	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1219	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
1037		1220
1038	do	1221	while (activecnt)
1039	{	1222	{
1040	/* queue check watchers (and execute them) */	1223	/* queue check watchers (and execute them) */
1041	if (expect_false (preparecnt))	1224	if (expect_false (preparecnt))
1042	{	1225	{
1043	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1226	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1044	call_pending (EV_A);	1227	call_pending (EV_A);
1045	}	1228	}
1046		1229
		1230	/* we might have forked, so reify kernel state if necessary */
		1231	if (expect_false (postfork))
		1232	loop_fork (EV_A);
		1233
1047	/* update fd-related kernel structures */	1234	/* update fd-related kernel structures */
1048	fd_reify (EV_A);	1235	fd_reify (EV_A);
1049		1236
1050	/* calculate blocking time */	1237	/* calculate blocking time */
1051		1238
1052	/* we only need this for !monotonic clockor timers, but as we basically	1239	/* we only need this for !monotonic clock or timers, but as we basically
1053	always have timers, we just calculate it always */	1240	always have timers, we just calculate it always */
1054	#if EV_USE_MONOTONIC	1241	#if EV_USE_MONOTONIC
1055	if (expect_true (have_monotonic))	1242	if (expect_true (have_monotonic))
1056	time_update_monotonic (EV_A);	1243	time_update_monotonic (EV_A);
1057	else	1244	else
1058	#endif	1245	#endif
1059	{	1246	{
1060	rt_now = ev_time ();	1247	ev_rt_now = ev_time ();
1061	mn_now = rt_now;	1248	mn_now = ev_rt_now;
1062	}	1249	}
1063		1250
1064	if (flags & EVLOOP_NONBLOCK || idlecnt)	1251	if (flags & EVLOOP_NONBLOCK || idlecnt)
1065	block = 0.;	1252	block = 0.;
1066	else	1253	else
…		…
1071	{	1258	{
1072	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1259	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
1073	if (block > to) block = to;	1260	if (block > to) block = to;
1074	}	1261	}
1075		1262
		1263	#if EV_PERIODICS
1076	if (periodiccnt)	1264	if (periodiccnt)
1077	{	1265	{
1078	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1266	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
1079	if (block > to) block = to;	1267	if (block > to) block = to;
1080	}	1268	}
		1269	#endif
1081		1270
1082	if (block < 0.) block = 0.;	1271	if (expect_false (block < 0.)) block = 0.;
1083	}	1272	}
1084		1273
1085	method_poll (EV_A_ block);	1274	method_poll (EV_A_ block);
1086		1275
1087	/* update rt_now, do magic */	1276	/* update ev_rt_now, do magic */
1088	time_update (EV_A);	1277	time_update (EV_A);
1089		1278
1090	/* queue pending timers and reschedule them */	1279	/* queue pending timers and reschedule them */
1091	timers_reify (EV_A); /* relative timers called last */	1280	timers_reify (EV_A); /* relative timers called last */
		1281	#if EV_PERIODICS
1092	periodics_reify (EV_A); /* absolute timers called first */	1282	periodics_reify (EV_A); /* absolute timers called first */
		1283	#endif
1093		1284
1094	/* queue idle watchers unless io or timers are pending */	1285	/* queue idle watchers unless io or timers are pending */
1095	if (!pendingcnt)	1286	if (idlecnt && !any_pending (EV_A))
1096	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1287	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1097		1288
1098	/* queue check watchers, to be executed first */	1289	/* queue check watchers, to be executed first */
1099	if (checkcnt)	1290	if (expect_false (checkcnt))
1100	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1291	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1101		1292
1102	call_pending (EV_A);	1293	call_pending (EV_A);
		1294
		1295	if (expect_false (loop_done))
		1296	break;
1103	}	1297	}
1104	while (activecnt && !loop_done);
1105		1298
1106	if (loop_done != 2)	1299	if (loop_done != 2)
1107	loop_done = 0;	1300	loop_done = 0;
1108	}	1301	}
1109		1302
…		…
1169	void	1362	void
1170	ev_io_start (EV_P_ struct ev_io *w)	1363	ev_io_start (EV_P_ struct ev_io *w)
1171	{	1364	{
1172	int fd = w->fd;	1365	int fd = w->fd;
1173		1366
1174	if (ev_is_active (w))	1367	if (expect_false (ev_is_active (w)))
1175	return;	1368	return;
1176		1369
1177	assert (("ev_io_start called with negative fd", fd >= 0));	1370	assert (("ev_io_start called with negative fd", fd >= 0));
1178		1371
1179	ev_start (EV_A_ (W)w, 1);	1372	ev_start (EV_A_ (W)w, 1);
1180	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1373	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1181	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1374	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1182		1375
1183	fd_change (EV_A_ fd);	1376	fd_change (EV_A_ fd);
1184	}	1377	}
1185		1378
1186	void	1379	void
1187	ev_io_stop (EV_P_ struct ev_io *w)	1380	ev_io_stop (EV_P_ struct ev_io *w)
1188	{	1381	{
1189	ev_clear_pending (EV_A_ (W)w);	1382	ev_clear_pending (EV_A_ (W)w);
1190	if (!ev_is_active (w))	1383	if (expect_false (!ev_is_active (w)))
1191	return;	1384	return;
		1385
		1386	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1192		1387
1193	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1388	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1194	ev_stop (EV_A_ (W)w);	1389	ev_stop (EV_A_ (W)w);
1195		1390
1196	fd_change (EV_A_ w->fd);	1391	fd_change (EV_A_ w->fd);
1197	}	1392	}
1198		1393
1199	void	1394	void
1200	ev_timer_start (EV_P_ struct ev_timer *w)	1395	ev_timer_start (EV_P_ struct ev_timer *w)
1201	{	1396	{
1202	if (ev_is_active (w))	1397	if (expect_false (ev_is_active (w)))
1203	return;	1398	return;
1204		1399
1205	((WT)w)->at += mn_now;	1400	((WT)w)->at += mn_now;
1206		1401
1207	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1402	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1208		1403
1209	ev_start (EV_A_ (W)w, ++timercnt);	1404	ev_start (EV_A_ (W)w, ++timercnt);
1210	array_needsize (timers, timermax, timercnt, );	1405	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1211	timers [timercnt - 1] = w;	1406	timers [timercnt - 1] = w;
1212	upheap ((WT *)timers, timercnt - 1);	1407	upheap ((WT *)timers, timercnt - 1);
1213		1408
1214	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1409	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1215	}	1410	}
1216		1411
1217	void	1412	void
1218	ev_timer_stop (EV_P_ struct ev_timer *w)	1413	ev_timer_stop (EV_P_ struct ev_timer *w)
1219	{	1414	{
1220	ev_clear_pending (EV_A_ (W)w);	1415	ev_clear_pending (EV_A_ (W)w);
1221	if (!ev_is_active (w))	1416	if (expect_false (!ev_is_active (w)))
1222	return;	1417	return;
1223		1418
1224	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1419	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1225		1420
1226	if (((W)w)->active < timercnt--)	1421	if (expect_true (((W)w)->active < timercnt--))
1227	{	1422	{
1228	timers [((W)w)->active - 1] = timers [timercnt];	1423	timers [((W)w)->active - 1] = timers [timercnt];
1229	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1424	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1230	}	1425	}
1231		1426
1232	((WT)w)->at = w->repeat;	1427	((WT)w)->at -= mn_now;
1233		1428
1234	ev_stop (EV_A_ (W)w);	1429	ev_stop (EV_A_ (W)w);
1235	}	1430	}
1236		1431
1237	void	1432	void
…		…
1240	if (ev_is_active (w))	1435	if (ev_is_active (w))
1241	{	1436	{
1242	if (w->repeat)	1437	if (w->repeat)
1243	{	1438	{
1244	((WT)w)->at = mn_now + w->repeat;	1439	((WT)w)->at = mn_now + w->repeat;
1245	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1440	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1246	}	1441	}
1247	else	1442	else
1248	ev_timer_stop (EV_A_ w);	1443	ev_timer_stop (EV_A_ w);
1249	}	1444	}
1250	else if (w->repeat)	1445	else if (w->repeat)
		1446	{
		1447	w->at = w->repeat;
1251	ev_timer_start (EV_A_ w);	1448	ev_timer_start (EV_A_ w);
		1449	}
1252	}	1450	}
1253		1451
		1452	#if EV_PERIODICS
1254	void	1453	void
1255	ev_periodic_start (EV_P_ struct ev_periodic *w)	1454	ev_periodic_start (EV_P_ struct ev_periodic *w)
1256	{	1455	{
1257	if (ev_is_active (w))	1456	if (expect_false (ev_is_active (w)))
1258	return;	1457	return;
1259		1458
		1459	if (w->reschedule_cb)
		1460	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1461	else if (w->interval)
		1462	{
1260	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1463	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1261
1262	/* this formula differs from the one in periodic_reify because we do not always round up */	1464	/* this formula differs from the one in periodic_reify because we do not always round up */
1263	if (w->interval)
1264	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1465	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1466	}
1265		1467
1266	ev_start (EV_A_ (W)w, ++periodiccnt);	1468	ev_start (EV_A_ (W)w, ++periodiccnt);
1267	array_needsize (periodics, periodicmax, periodiccnt, );	1469	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1268	periodics [periodiccnt - 1] = w;	1470	periodics [periodiccnt - 1] = w;
1269	upheap ((WT *)periodics, periodiccnt - 1);	1471	upheap ((WT *)periodics, periodiccnt - 1);
1270		1472
1271	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1473	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1272	}	1474	}
1273		1475
1274	void	1476	void
1275	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1477	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1276	{	1478	{
1277	ev_clear_pending (EV_A_ (W)w);	1479	ev_clear_pending (EV_A_ (W)w);
1278	if (!ev_is_active (w))	1480	if (expect_false (!ev_is_active (w)))
1279	return;	1481	return;
1280		1482
1281	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1483	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1282		1484
1283	if (((W)w)->active < periodiccnt--)	1485	if (expect_true (((W)w)->active < periodiccnt--))
1284	{	1486	{
1285	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1487	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1286	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1488	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1287	}	1489	}
1288		1490
1289	ev_stop (EV_A_ (W)w);	1491	ev_stop (EV_A_ (W)w);
1290	}	1492	}
1291		1493
1292	void	1494	void
		1495	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1496	{
		1497	/* TODO: use adjustheap and recalculation */
		1498	ev_periodic_stop (EV_A_ w);
		1499	ev_periodic_start (EV_A_ w);
		1500	}
		1501	#endif
		1502
		1503	void
1293	ev_idle_start (EV_P_ struct ev_idle *w)	1504	ev_idle_start (EV_P_ struct ev_idle *w)
1294	{	1505	{
1295	if (ev_is_active (w))	1506	if (expect_false (ev_is_active (w)))
1296	return;	1507	return;
1297		1508
1298	ev_start (EV_A_ (W)w, ++idlecnt);	1509	ev_start (EV_A_ (W)w, ++idlecnt);
1299	array_needsize (idles, idlemax, idlecnt, );	1510	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1300	idles [idlecnt - 1] = w;	1511	idles [idlecnt - 1] = w;
1301	}	1512	}
1302		1513
1303	void	1514	void
1304	ev_idle_stop (EV_P_ struct ev_idle *w)	1515	ev_idle_stop (EV_P_ struct ev_idle *w)
1305	{	1516	{
1306	ev_clear_pending (EV_A_ (W)w);	1517	ev_clear_pending (EV_A_ (W)w);
1307	if (ev_is_active (w))	1518	if (expect_false (!ev_is_active (w)))
1308	return;	1519	return;
1309		1520
1310	idles [((W)w)->active - 1] = idles [--idlecnt];	1521	idles [((W)w)->active - 1] = idles [--idlecnt];
1311	ev_stop (EV_A_ (W)w);	1522	ev_stop (EV_A_ (W)w);
1312	}	1523	}
1313		1524
1314	void	1525	void
1315	ev_prepare_start (EV_P_ struct ev_prepare *w)	1526	ev_prepare_start (EV_P_ struct ev_prepare *w)
1316	{	1527	{
1317	if (ev_is_active (w))	1528	if (expect_false (ev_is_active (w)))
1318	return;	1529	return;
1319		1530
1320	ev_start (EV_A_ (W)w, ++preparecnt);	1531	ev_start (EV_A_ (W)w, ++preparecnt);
1321	array_needsize (prepares, preparemax, preparecnt, );	1532	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1322	prepares [preparecnt - 1] = w;	1533	prepares [preparecnt - 1] = w;
1323	}	1534	}
1324		1535
1325	void	1536	void
1326	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1537	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1327	{	1538	{
1328	ev_clear_pending (EV_A_ (W)w);	1539	ev_clear_pending (EV_A_ (W)w);
1329	if (ev_is_active (w))	1540	if (expect_false (!ev_is_active (w)))
1330	return;	1541	return;
1331		1542
1332	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1543	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1333	ev_stop (EV_A_ (W)w);	1544	ev_stop (EV_A_ (W)w);
1334	}	1545	}
1335		1546
1336	void	1547	void
1337	ev_check_start (EV_P_ struct ev_check *w)	1548	ev_check_start (EV_P_ struct ev_check *w)
1338	{	1549	{
1339	if (ev_is_active (w))	1550	if (expect_false (ev_is_active (w)))
1340	return;	1551	return;
1341		1552
1342	ev_start (EV_A_ (W)w, ++checkcnt);	1553	ev_start (EV_A_ (W)w, ++checkcnt);
1343	array_needsize (checks, checkmax, checkcnt, );	1554	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1344	checks [checkcnt - 1] = w;	1555	checks [checkcnt - 1] = w;
1345	}	1556	}
1346		1557
1347	void	1558	void
1348	ev_check_stop (EV_P_ struct ev_check *w)	1559	ev_check_stop (EV_P_ struct ev_check *w)
1349	{	1560	{
1350	ev_clear_pending (EV_A_ (W)w);	1561	ev_clear_pending (EV_A_ (W)w);
1351	if (ev_is_active (w))	1562	if (expect_false (!ev_is_active (w)))
1352	return;	1563	return;
1353		1564
1354	checks [((W)w)->active - 1] = checks [--checkcnt];	1565	checks [((W)w)->active - 1] = checks [--checkcnt];
1355	ev_stop (EV_A_ (W)w);	1566	ev_stop (EV_A_ (W)w);
1356	}	1567	}
…		…
1361		1572
1362	void	1573	void
1363	ev_signal_start (EV_P_ struct ev_signal *w)	1574	ev_signal_start (EV_P_ struct ev_signal *w)
1364	{	1575	{
1365	#if EV_MULTIPLICITY	1576	#if EV_MULTIPLICITY
1366	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1577	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1367	#endif	1578	#endif
1368	if (ev_is_active (w))	1579	if (expect_false (ev_is_active (w)))
1369	return;	1580	return;
1370		1581
1371	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1582	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1372		1583
1373	ev_start (EV_A_ (W)w, 1);	1584	ev_start (EV_A_ (W)w, 1);
1374	array_needsize (signals, signalmax, w->signum, signals_init);	1585	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1375	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1586	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1376		1587
1377	if (!((WL)w)->next)	1588	if (!((WL)w)->next)
1378	{	1589	{
1379	#if WIN32	1590	#if _WIN32
1380	signal (w->signum, sighandler);	1591	signal (w->signum, sighandler);
1381	#else	1592	#else
1382	struct sigaction sa;	1593	struct sigaction sa;
1383	sa.sa_handler = sighandler;	1594	sa.sa_handler = sighandler;
1384	sigfillset (&sa.sa_mask);	1595	sigfillset (&sa.sa_mask);
…		…
1390		1601
1391	void	1602	void
1392	ev_signal_stop (EV_P_ struct ev_signal *w)	1603	ev_signal_stop (EV_P_ struct ev_signal *w)
1393	{	1604	{
1394	ev_clear_pending (EV_A_ (W)w);	1605	ev_clear_pending (EV_A_ (W)w);
1395	if (!ev_is_active (w))	1606	if (expect_false (!ev_is_active (w)))
1396	return;	1607	return;
1397		1608
1398	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1609	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1399	ev_stop (EV_A_ (W)w);	1610	ev_stop (EV_A_ (W)w);
1400		1611
…		…
1404		1615
1405	void	1616	void
1406	ev_child_start (EV_P_ struct ev_child *w)	1617	ev_child_start (EV_P_ struct ev_child *w)
1407	{	1618	{
1408	#if EV_MULTIPLICITY	1619	#if EV_MULTIPLICITY
1409	assert (("child watchers are only supported in the default loop", loop == default_loop));	1620	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1410	#endif	1621	#endif
1411	if (ev_is_active (w))	1622	if (expect_false (ev_is_active (w)))
1412	return;	1623	return;
1413		1624
1414	ev_start (EV_A_ (W)w, 1);	1625	ev_start (EV_A_ (W)w, 1);
1415	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1626	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1416	}	1627	}
1417		1628
1418	void	1629	void
1419	ev_child_stop (EV_P_ struct ev_child *w)	1630	ev_child_stop (EV_P_ struct ev_child *w)
1420	{	1631	{
1421	ev_clear_pending (EV_A_ (W)w);	1632	ev_clear_pending (EV_A_ (W)w);
1422	if (ev_is_active (w))	1633	if (expect_false (!ev_is_active (w)))
1423	return;	1634	return;
1424		1635
1425	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1636	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1426	ev_stop (EV_A_ (W)w);	1637	ev_stop (EV_A_ (W)w);
1427	}	1638	}
…		…
1462	}	1673	}
1463		1674
1464	void	1675	void
1465	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1676	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1466	{	1677	{
1467	struct ev_once *once = ev_malloc (sizeof (struct ev_once));	1678	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1468		1679
1469	if (!once)	1680	if (expect_false (!once))
		1681	{
1470	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1682	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1471	else	1683	return;
1472	{	1684	}
		1685
1473	once->cb = cb;	1686	once->cb = cb;
1474	once->arg = arg;	1687	once->arg = arg;
1475		1688
1476	ev_watcher_init (&once->io, once_cb_io);	1689	ev_init (&once->io, once_cb_io);
1477	if (fd >= 0)	1690	if (fd >= 0)
1478	{	1691	{
1479	ev_io_set (&once->io, fd, events);	1692	ev_io_set (&once->io, fd, events);
1480	ev_io_start (EV_A_ &once->io);	1693	ev_io_start (EV_A_ &once->io);
1481	}	1694	}
1482		1695
1483	ev_watcher_init (&once->to, once_cb_to);	1696	ev_init (&once->to, once_cb_to);
1484	if (timeout >= 0.)	1697	if (timeout >= 0.)
1485	{	1698	{
1486	ev_timer_set (&once->to, timeout, 0.);	1699	ev_timer_set (&once->to, timeout, 0.);
1487	ev_timer_start (EV_A_ &once->to);	1700	ev_timer_start (EV_A_ &once->to);
1488	}
1489	}	1701	}
1490	}	1702	}
1491		1703
		1704	#ifdef __cplusplus
		1705	}
		1706	#endif
		1707

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