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Comparing libev/ev.c (file contents):
Revision 1.71 by root, Tue Nov 6 13:17:55 2007 UTC vs.
Revision 1.138 by root, Sat Nov 24 09:48:38 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>
…		…
64	#include <assert.h>	108	#include <assert.h>
65	#include <errno.h>	109	#include <errno.h>
66	#include <sys/types.h>	110	#include <sys/types.h>
67	#include <time.h>	111	#include <time.h>
68		112
69	#ifndef PERL
70	# include <signal.h>	113	#include <signal.h>
71	#endif
72		114
73	#ifndef WIN32	115	#ifndef _WIN32
74	# include <unistd.h>	116	# include <unistd.h>
75	# include <sys/time.h>	117	# include <sys/time.h>
76	# 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
77	#endif	124	# endif
		125	#endif
		126
78	/**/	127	/**/
79		128
80	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
81	# 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
82	#endif	135	#endif
83		136
84	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
85	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
86	#endif	139	#endif
87		140
88	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
89	# 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
90	#endif	147	#endif
91		148
92	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
93	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
94	#endif	151	#endif
95		152
96	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
97	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
98	#endif	155	#endif
99		156
100	#ifndef EV_USE_WIN32
101	# ifdef WIN32
102	# define EV_USE_WIN32 0 /* it does not exist, use select */
103	# undef EV_USE_SELECT
104	# define EV_USE_SELECT 1
105	# else
106	# define EV_USE_WIN32 0
107	# endif
108	#endif
109
110	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
111	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
112	#endif	159	#endif
113		160
114	/**/	161	/**/
115		162
116	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
121	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
122	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
123	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
124	#endif	171	#endif
125		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
126	/**/	177	/**/
127		178
128	#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) */
129	#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) */
130	#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 */
131	/*#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 */
132		183
		184	#ifdef EV_H
		185	# include EV_H
		186	#else
133	#include "ev.h"	187	# include "ev.h"
		188	#endif
134		189
135	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
136	# define expect(expr,value) __builtin_expect ((expr),(value))	191	# define expect(expr,value) __builtin_expect ((expr),(value))
137	# define inline inline	192	# define inline static inline
138	#else	193	#else
139	# define expect(expr,value) (expr)	194	# define expect(expr,value) (expr)
140	# define inline static	195	# define inline static
141	#endif	196	#endif
142		197
…		…
144	#define expect_true(expr) expect ((expr) != 0, 1)	199	#define expect_true(expr) expect ((expr) != 0, 1)
145		200
146	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	201	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
147	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	202	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
148		203
		204	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		205	#define EMPTY2(a,b) /* used to suppress some warnings */
		206
149	typedef struct ev_watcher *W;	207	typedef ev_watcher *W;
150	typedef struct ev_watcher_list *WL;	208	typedef ev_watcher_list *WL;
151	typedef struct ev_watcher_time *WT;	209	typedef ev_watcher_time *WT;
152		210
153	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	211	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
154		212
155	#if WIN32	213	#ifdef _WIN32
156	/* note: the comment below could not be substantiated, but what would I care */	214	# include "ev_win32.c"
157	/* MSDN says this is required to handle SIGFPE */
158	volatile double SIGFPE_REQ = 0.0f;
159	#endif	215	#endif
160		216
161	/*****************************************************************************/	217	/*****************************************************************************/
162		218
163	static void (*syserr_cb)(const char *msg);	219	static void (*syserr_cb)(const char *msg);
…		…
211	typedef struct	267	typedef struct
212	{	268	{
213	WL head;	269	WL head;
214	unsigned char events;	270	unsigned char events;
215	unsigned char reify;	271	unsigned char reify;
		272	#if EV_SELECT_IS_WINSOCKET
		273	SOCKET handle;
		274	#endif
216	} ANFD;	275	} ANFD;
217		276
218	typedef struct	277	typedef struct
219	{	278	{
220	W w;	279	W w;
221	int events;	280	int events;
222	} ANPENDING;	281	} ANPENDING;
223		282
224	#if EV_MULTIPLICITY	283	#if EV_MULTIPLICITY
225		284
226	struct ev_loop	285	struct ev_loop
227	{	286	{
		287	ev_tstamp ev_rt_now;
		288	#define ev_rt_now ((loop)->ev_rt_now)
228	# define VAR(name,decl) decl;	289	#define VAR(name,decl) decl;
229	# include "ev_vars.h"	290	#include "ev_vars.h"
230	};
231	# undef VAR	291	#undef VAR
		292	};
232	# 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;
233		297
234	#else	298	#else
235		299
		300	ev_tstamp ev_rt_now;
236	# define VAR(name,decl) static decl;	301	#define VAR(name,decl) static decl;
237	# include "ev_vars.h"	302	#include "ev_vars.h"
238	# undef VAR	303	#undef VAR
		304
		305	static int ev_default_loop_ptr;
239		306
240	#endif	307	#endif
241		308
242	/*****************************************************************************/	309	/*****************************************************************************/
243		310
244	inline ev_tstamp	311	ev_tstamp
245	ev_time (void)	312	ev_time (void)
246	{	313	{
247	#if EV_USE_REALTIME	314	#if EV_USE_REALTIME
248	struct timespec ts;	315	struct timespec ts;
249	clock_gettime (CLOCK_REALTIME, &ts);	316	clock_gettime (CLOCK_REALTIME, &ts);
…		…
268	#endif	335	#endif
269		336
270	return ev_time ();	337	return ev_time ();
271	}	338	}
272		339
		340	#if EV_MULTIPLICITY
273	ev_tstamp	341	ev_tstamp
274	ev_now (EV_P)	342	ev_now (EV_P)
275	{	343	{
276	return rt_now;	344	return ev_rt_now;
277	}	345	}
		346	#endif
278		347
279	#define array_roundsize(base,n) ((n) | 4 & ~3)	348	#define array_roundsize(type,n) (((n) | 4) & ~3)
280		349
281	#define array_needsize(base,cur,cnt,init) \	350	#define array_needsize(type,base,cur,cnt,init) \
282	if (expect_false ((cnt) > cur)) \	351	if (expect_false ((cnt) > cur)) \
283	{ \	352	{ \
284	int newcnt = cur; \	353	int newcnt = cur; \
285	do \	354	do \
286	{ \	355	{ \
287	newcnt = array_roundsize (base, newcnt << 1); \	356	newcnt = array_roundsize (type, newcnt << 1); \
288	} \	357	} \
289	while ((cnt) > newcnt); \	358	while ((cnt) > newcnt); \
290	\	359	\
291	base = ev_realloc (base, sizeof (*base) * (newcnt)); \	360	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
292	init (base + cur, newcnt - cur); \	361	init (base + cur, newcnt - cur); \
293	cur = newcnt; \	362	cur = newcnt; \
294	}	363	}
295		364
296	#define array_slim(stem) \	365	#define array_slim(type,stem) \
297	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	366	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
298	{ \	367	{ \
299	stem ## max = array_roundsize (stem ## cnt >> 1); \	368	stem ## max = array_roundsize (stem ## cnt >> 1); \
300	base = ev_realloc (base, sizeof (*base) * (stem ## max)); \	369	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
301	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	370	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
302	}	371	}
303
304	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
305	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
306	#define array_free_microshit(stem) \
307	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
308		372
309	#define array_free(stem, idx) \	373	#define array_free(stem, idx) \
310	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;
311		375
312	/*****************************************************************************/	376	/*****************************************************************************/
…		…
322		386
323	++base;	387	++base;
324	}	388	}
325	}	389	}
326		390
327	static void	391	void
328	event (EV_P_ W w, int events)	392	ev_feed_event (EV_P_ void *w, int revents)
329	{	393	{
330	if (w->pending)	394	W w_ = (W)w;
		395
		396	if (expect_false (w_->pending))
331	{	397	{
332	pendings [ABSPRI (w)][w->pending - 1].events |= events;	398	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
333	return;	399	return;
334	}	400	}
335		401
336	w->pending = ++pendingcnt [ABSPRI (w)];	402	w_->pending = ++pendingcnt [ABSPRI (w_)];
337	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));	403	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
338	pendings [ABSPRI (w)][w->pending - 1].w = w;	404	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
339	pendings [ABSPRI (w)][w->pending - 1].events = events;	405	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
340	}	406	}
341		407
342	static void	408	static void
343	queue_events (EV_P_ W *events, int eventcnt, int type)	409	queue_events (EV_P_ W *events, int eventcnt, int type)
344	{	410	{
345	int i;	411	int i;
346		412
347	for (i = 0; i < eventcnt; ++i)	413	for (i = 0; i < eventcnt; ++i)
348	event (EV_A_ events [i], type);	414	ev_feed_event (EV_A_ events [i], type);
349	}	415	}
350		416
351	static void	417	inline void
352	fd_event (EV_P_ int fd, int events)	418	fd_event (EV_P_ int fd, int revents)
353	{	419	{
354	ANFD *anfd = anfds + fd;	420	ANFD *anfd = anfds + fd;
355	struct ev_io *w;	421	ev_io *w;
356		422
357	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	423	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
358	{	424	{
359	int ev = w->events & events;	425	int ev = w->events & revents;
360		426
361	if (ev)	427	if (ev)
362	event (EV_A_ (W)w, ev);	428	ev_feed_event (EV_A_ (W)w, ev);
363	}	429	}
		430	}
		431
		432	void
		433	ev_feed_fd_event (EV_P_ int fd, int revents)
		434	{
		435	fd_event (EV_A_ fd, revents);
364	}	436	}
365		437
366	/*****************************************************************************/	438	/*****************************************************************************/
367		439
368	static void	440	inline void
369	fd_reify (EV_P)	441	fd_reify (EV_P)
370	{	442	{
371	int i;	443	int i;
372		444
373	for (i = 0; i < fdchangecnt; ++i)	445	for (i = 0; i < fdchangecnt; ++i)
374	{	446	{
375	int fd = fdchanges [i];	447	int fd = fdchanges [i];
376	ANFD *anfd = anfds + fd;	448	ANFD *anfd = anfds + fd;
377	struct ev_io *w;	449	ev_io *w;
378		450
379	int events = 0;	451	int events = 0;
380		452
381	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	453	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
382	events |= w->events;	454	events |= w->events;
383		455
		456	#if EV_SELECT_IS_WINSOCKET
		457	if (events)
		458	{
		459	unsigned long argp;
		460	anfd->handle = _get_osfhandle (fd);
		461	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		462	}
		463	#endif
		464
384	anfd->reify = 0;	465	anfd->reify = 0;
385		466
386	method_modify (EV_A_ fd, anfd->events, events);	467	backend_modify (EV_A_ fd, anfd->events, events);
387	anfd->events = events;	468	anfd->events = events;
388	}	469	}
389		470
390	fdchangecnt = 0;	471	fdchangecnt = 0;
391	}	472	}
392		473
393	static void	474	static void
394	fd_change (EV_P_ int fd)	475	fd_change (EV_P_ int fd)
395	{	476	{
396	if (anfds [fd].reify)	477	if (expect_false (anfds [fd].reify))
397	return;	478	return;
398		479
399	anfds [fd].reify = 1;	480	anfds [fd].reify = 1;
400		481
401	++fdchangecnt;	482	++fdchangecnt;
402	array_needsize (fdchanges, fdchangemax, fdchangecnt, (void));	483	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
403	fdchanges [fdchangecnt - 1] = fd;	484	fdchanges [fdchangecnt - 1] = fd;
404	}	485	}
405		486
406	static void	487	static void
407	fd_kill (EV_P_ int fd)	488	fd_kill (EV_P_ int fd)
408	{	489	{
409	struct ev_io *w;	490	ev_io *w;
410		491
411	while ((w = (struct ev_io *)anfds [fd].head))	492	while ((w = (ev_io *)anfds [fd].head))
412	{	493	{
413	ev_io_stop (EV_A_ w);	494	ev_io_stop (EV_A_ w);
414	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	495	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
415	}	496	}
416	}	497	}
417		498
418	static int	499	inline int
419	fd_valid (int fd)	500	fd_valid (int fd)
420	{	501	{
421	#ifdef WIN32	502	#ifdef _WIN32
422	return !!win32_get_osfhandle (fd);	503	return _get_osfhandle (fd) != -1;
423	#else	504	#else
424	return fcntl (fd, F_GETFD) != -1;	505	return fcntl (fd, F_GETFD) != -1;
425	#endif	506	#endif
426	}	507	}
427		508
…		…
449	fd_kill (EV_A_ fd);	530	fd_kill (EV_A_ fd);
450	return;	531	return;
451	}	532	}
452	}	533	}
453		534
454	/* usually called after fork if method needs to re-arm all fds from scratch */	535	/* usually called after fork if backend needs to re-arm all fds from scratch */
455	static void	536	static void
456	fd_rearm_all (EV_P)	537	fd_rearm_all (EV_P)
457	{	538	{
458	int fd;	539	int fd;
459		540
…		…
507		588
508	heap [k] = w;	589	heap [k] = w;
509	((W)heap [k])->active = k + 1;	590	((W)heap [k])->active = k + 1;
510	}	591	}
511		592
		593	inline void
		594	adjustheap (WT *heap, int N, int k)
		595	{
		596	upheap (heap, k);
		597	downheap (heap, N, k);
		598	}
		599
512	/*****************************************************************************/	600	/*****************************************************************************/
513		601
514	typedef struct	602	typedef struct
515	{	603	{
516	WL head;	604	WL head;
…		…
520	static ANSIG *signals;	608	static ANSIG *signals;
521	static int signalmax;	609	static int signalmax;
522		610
523	static int sigpipe [2];	611	static int sigpipe [2];
524	static sig_atomic_t volatile gotsig;	612	static sig_atomic_t volatile gotsig;
525	static struct ev_io sigev;	613	static ev_io sigev;
526		614
527	static void	615	static void
528	signals_init (ANSIG *base, int count)	616	signals_init (ANSIG *base, int count)
529	{	617	{
530	while (count--)	618	while (count--)
…		…
537	}	625	}
538		626
539	static void	627	static void
540	sighandler (int signum)	628	sighandler (int signum)
541	{	629	{
542	#if WIN32	630	#if _WIN32
543	signal (signum, sighandler);	631	signal (signum, sighandler);
544	#endif	632	#endif
545		633
546	signals [signum - 1].gotsig = 1;	634	signals [signum - 1].gotsig = 1;
547		635
…		…
552	write (sigpipe [1], &signum, 1);	640	write (sigpipe [1], &signum, 1);
553	errno = old_errno;	641	errno = old_errno;
554	}	642	}
555	}	643	}
556		644
557	static void	645	void
558	sigcb (EV_P_ struct ev_io *iow, int revents)	646	ev_feed_signal_event (EV_P_ int signum)
559	{	647	{
560	WL w;	648	WL w;
		649
		650	#if EV_MULTIPLICITY
		651	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		652	#endif
		653
		654	--signum;
		655
		656	if (signum < 0 || signum >= signalmax)
		657	return;
		658
		659	signals [signum].gotsig = 0;
		660
		661	for (w = signals [signum].head; w; w = w->next)
		662	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		663	}
		664
		665	static void
		666	sigcb (EV_P_ ev_io *iow, int revents)
		667	{
561	int signum;	668	int signum;
562		669
563	read (sigpipe [0], &revents, 1);	670	read (sigpipe [0], &revents, 1);
564	gotsig = 0;	671	gotsig = 0;
565		672
566	for (signum = signalmax; signum--; )	673	for (signum = signalmax; signum--; )
567	if (signals [signum].gotsig)	674	if (signals [signum].gotsig)
568	{	675	ev_feed_signal_event (EV_A_ signum + 1);
569	signals [signum].gotsig = 0;	676	}
570		677
571	for (w = signals [signum].head; w; w = w->next)	678	static void
572	event (EV_A_ (W)w, EV_SIGNAL);	679	fd_intern (int fd)
573	}	680	{
		681	#ifdef _WIN32
		682	int arg = 1;
		683	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		684	#else
		685	fcntl (fd, F_SETFD, FD_CLOEXEC);
		686	fcntl (fd, F_SETFL, O_NONBLOCK);
		687	#endif
574	}	688	}
575		689
576	static void	690	static void
577	siginit (EV_P)	691	siginit (EV_P)
578	{	692	{
579	#ifndef WIN32	693	fd_intern (sigpipe [0]);
580	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	694	fd_intern (sigpipe [1]);
581	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
582
583	/* rather than sort out wether we really need nb, set it */
584	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
585	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
586	#endif
587		695
588	ev_io_set (&sigev, sigpipe [0], EV_READ);	696	ev_io_set (&sigev, sigpipe [0], EV_READ);
589	ev_io_start (EV_A_ &sigev);	697	ev_io_start (EV_A_ &sigev);
590	ev_unref (EV_A); /* child watcher should not keep loop alive */	698	ev_unref (EV_A); /* child watcher should not keep loop alive */
591	}	699	}
592		700
593	/*****************************************************************************/	701	/*****************************************************************************/
594		702
595	static struct ev_child *childs [PID_HASHSIZE];	703	static ev_child *childs [PID_HASHSIZE];
596		704
597	#ifndef WIN32	705	#ifndef _WIN32
598		706
599	static struct ev_signal childev;	707	static ev_signal childev;
600		708
601	#ifndef WCONTINUED	709	#ifndef WCONTINUED
602	# define WCONTINUED 0	710	# define WCONTINUED 0
603	#endif	711	#endif
604		712
605	static void	713	static void
606	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	714	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
607	{	715	{
608	struct ev_child *w;	716	ev_child *w;
609		717
610	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	718	for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
611	if (w->pid == pid || !w->pid)	719	if (w->pid == pid || !w->pid)
612	{	720	{
613	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	721	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
614	w->rpid = pid;	722	w->rpid = pid;
615	w->rstatus = status;	723	w->rstatus = status;
616	event (EV_A_ (W)w, EV_CHILD);	724	ev_feed_event (EV_A_ (W)w, EV_CHILD);
617	}	725	}
618	}	726	}
619		727
620	static void	728	static void
621	childcb (EV_P_ struct ev_signal *sw, int revents)	729	childcb (EV_P_ ev_signal *sw, int revents)
622	{	730	{
623	int pid, status;	731	int pid, status;
624		732
625	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	733	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
626	{	734	{
627	/* make sure we are called again until all childs have been reaped */	735	/* make sure we are called again until all childs have been reaped */
		736	/* we need to do it this way so that the callback gets called before we continue */
628	event (EV_A_ (W)sw, EV_SIGNAL);	737	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
629		738
630	child_reap (EV_A_ sw, pid, pid, status);	739	child_reap (EV_A_ sw, pid, pid, status);
631	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	740	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
632	}	741	}
633	}	742	}
634		743
635	#endif	744	#endif
636		745
637	/*****************************************************************************/	746	/*****************************************************************************/
638		747
		748	#if EV_USE_PORT
		749	# include "ev_port.c"
		750	#endif
639	#if EV_USE_KQUEUE	751	#if EV_USE_KQUEUE
640	# include "ev_kqueue.c"	752	# include "ev_kqueue.c"
641	#endif	753	#endif
642	#if EV_USE_EPOLL	754	#if EV_USE_EPOLL
643	# include "ev_epoll.c"	755	# include "ev_epoll.c"
…		…
663		775
664	/* return true if we are running with elevated privileges and should ignore env variables */	776	/* return true if we are running with elevated privileges and should ignore env variables */
665	static int	777	static int
666	enable_secure (void)	778	enable_secure (void)
667	{	779	{
668	#ifdef WIN32	780	#ifdef _WIN32
669	return 0;	781	return 0;
670	#else	782	#else
671	return getuid () != geteuid ()	783	return getuid () != geteuid ()
672	|| getgid () != getegid ();	784	|| getgid () != getegid ();
673	#endif	785	#endif
674	}	786	}
675		787
676	int	788	unsigned int
677	ev_method (EV_P)	789	ev_supported_backends (void)
678	{	790	{
679	return method;	791	unsigned int flags = 0;
680	}
681		792
682	static void	793	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
683	loop_init (EV_P_ int methods)	794	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		795	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		796	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		797	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		798
		799	return flags;
		800	}
		801
		802	unsigned int
		803	ev_recommended_backends (void)
684	{	804	{
685	if (!method)	805	unsigned int flags = ev_supported_backends ();
		806
		807	#ifndef __NetBSD__
		808	/* kqueue is borked on everything but netbsd apparently */
		809	/* it usually doesn't work correctly on anything but sockets and pipes */
		810	flags &= ~EVBACKEND_KQUEUE;
		811	#endif
		812	#ifdef __APPLE__
		813	// flags &= ~EVBACKEND_KQUEUE; for documentation
		814	flags &= ~EVBACKEND_POLL;
		815	#endif
		816
		817	return flags;
		818	}
		819
		820	unsigned int
		821	ev_embeddable_backends (void)
		822	{
		823	return EVBACKEND_EPOLL
		824	| EVBACKEND_KQUEUE
		825	| EVBACKEND_PORT;
		826	}
		827
		828	unsigned int
		829	ev_backend (EV_P)
		830	{
		831	return backend;
		832	}
		833
		834	static void
		835	loop_init (EV_P_ unsigned int flags)
		836	{
		837	if (!backend)
686	{	838	{
687	#if EV_USE_MONOTONIC	839	#if EV_USE_MONOTONIC
688	{	840	{
689	struct timespec ts;	841	struct timespec ts;
690	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	842	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
691	have_monotonic = 1;	843	have_monotonic = 1;
692	}	844	}
693	#endif	845	#endif
694		846
695	rt_now = ev_time ();	847	ev_rt_now = ev_time ();
696	mn_now = get_clock ();	848	mn_now = get_clock ();
697	now_floor = mn_now;	849	now_floor = mn_now;
698	rtmn_diff = rt_now - mn_now;	850	rtmn_diff = ev_rt_now - mn_now;
699		851
700	if (methods == EVMETHOD_AUTO)	852	if (!(flags & EVFLAG_NOENV)
701	if (!enable_secure () && getenv ("LIBEV_METHODS"))	853	&& !enable_secure ()
		854	&& getenv ("LIBEV_FLAGS"))
702	methods = atoi (getenv ("LIBEV_METHODS"));	855	flags = atoi (getenv ("LIBEV_FLAGS"));
703	else
704	methods = EVMETHOD_ANY;
705		856
706	method = 0;	857	if (!(flags & 0x0000ffffUL))
707	#if EV_USE_WIN32	858	flags |= ev_recommended_backends ();
708	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	859
		860	backend = 0;
		861	#if EV_USE_PORT
		862	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
709	#endif	863	#endif
710	#if EV_USE_KQUEUE	864	#if EV_USE_KQUEUE
711	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	865	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
712	#endif	866	#endif
713	#if EV_USE_EPOLL	867	#if EV_USE_EPOLL
714	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	868	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
715	#endif	869	#endif
716	#if EV_USE_POLL	870	#if EV_USE_POLL
717	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	871	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
718	#endif	872	#endif
719	#if EV_USE_SELECT	873	#if EV_USE_SELECT
720	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	874	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
721	#endif	875	#endif
722		876
723	ev_watcher_init (&sigev, sigcb);	877	ev_init (&sigev, sigcb);
724	ev_set_priority (&sigev, EV_MAXPRI);	878	ev_set_priority (&sigev, EV_MAXPRI);
725	}	879	}
726	}	880	}
727		881
728	void	882	static void
729	loop_destroy (EV_P)	883	loop_destroy (EV_P)
730	{	884	{
731	int i;	885	int i;
732		886
733	#if EV_USE_WIN32	887	#if EV_USE_PORT
734	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	888	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
735	#endif	889	#endif
736	#if EV_USE_KQUEUE	890	#if EV_USE_KQUEUE
737	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	891	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
738	#endif	892	#endif
739	#if EV_USE_EPOLL	893	#if EV_USE_EPOLL
740	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	894	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
741	#endif	895	#endif
742	#if EV_USE_POLL	896	#if EV_USE_POLL
743	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	897	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
744	#endif	898	#endif
745	#if EV_USE_SELECT	899	#if EV_USE_SELECT
746	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	900	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
747	#endif	901	#endif
748		902
749	for (i = NUMPRI; i--; )	903	for (i = NUMPRI; i--; )
750	array_free (pending, [i]);	904	array_free (pending, [i]);
751		905
752	/* have to use the microsoft-never-gets-it-right macro */	906	/* have to use the microsoft-never-gets-it-right macro */
753	array_free_microshit (fdchange);	907	array_free (fdchange, EMPTY0);
754	array_free_microshit (timer);	908	array_free (timer, EMPTY0);
755	array_free_microshit (periodic);	909	#if EV_PERIODICS
756	array_free_microshit (idle);	910	array_free (periodic, EMPTY0);
757	array_free_microshit (prepare);	911	#endif
758	array_free_microshit (check);	912	array_free (idle, EMPTY0);
		913	array_free (prepare, EMPTY0);
		914	array_free (check, EMPTY0);
759		915
760	method = 0;	916	backend = 0;
761	}	917	}
762		918
763	static void	919	static void
764	loop_fork (EV_P)	920	loop_fork (EV_P)
765	{	921	{
		922	#if EV_USE_PORT
		923	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		924	#endif
		925	#if EV_USE_KQUEUE
		926	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		927	#endif
766	#if EV_USE_EPOLL	928	#if EV_USE_EPOLL
767	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	929	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
768	#endif
769	#if EV_USE_KQUEUE
770	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
771	#endif	930	#endif
772		931
773	if (ev_is_active (&sigev))	932	if (ev_is_active (&sigev))
774	{	933	{
775	/* default loop */	934	/* default loop */
…		…
788	postfork = 0;	947	postfork = 0;
789	}	948	}
790		949
791	#if EV_MULTIPLICITY	950	#if EV_MULTIPLICITY
792	struct ev_loop *	951	struct ev_loop *
793	ev_loop_new (int methods)	952	ev_loop_new (unsigned int flags)
794	{	953	{
795	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	954	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
796		955
797	memset (loop, 0, sizeof (struct ev_loop));	956	memset (loop, 0, sizeof (struct ev_loop));
798		957
799	loop_init (EV_A_ methods);	958	loop_init (EV_A_ flags);
800		959
801	if (ev_method (EV_A))	960	if (ev_backend (EV_A))
802	return loop;	961	return loop;
803		962
804	return 0;	963	return 0;
805	}	964	}
806		965
…		…
818	}	977	}
819		978
820	#endif	979	#endif
821		980
822	#if EV_MULTIPLICITY	981	#if EV_MULTIPLICITY
823	struct ev_loop default_loop_struct;
824	static struct ev_loop *default_loop;
825
826	struct ev_loop *	982	struct ev_loop *
		983	ev_default_loop_init (unsigned int flags)
827	#else	984	#else
828	static int default_loop;
829
830	int	985	int
		986	ev_default_loop (unsigned int flags)
831	#endif	987	#endif
832	ev_default_loop (int methods)
833	{	988	{
834	if (sigpipe [0] == sigpipe [1])	989	if (sigpipe [0] == sigpipe [1])
835	if (pipe (sigpipe))	990	if (pipe (sigpipe))
836	return 0;	991	return 0;
837		992
838	if (!default_loop)	993	if (!ev_default_loop_ptr)
839	{	994	{
840	#if EV_MULTIPLICITY	995	#if EV_MULTIPLICITY
841	struct ev_loop *loop = default_loop = &default_loop_struct;	996	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
842	#else	997	#else
843	default_loop = 1;	998	ev_default_loop_ptr = 1;
844	#endif	999	#endif
845		1000
846	loop_init (EV_A_ methods);	1001	loop_init (EV_A_ flags);
847		1002
848	if (ev_method (EV_A))	1003	if (ev_backend (EV_A))
849	{	1004	{
850	siginit (EV_A);	1005	siginit (EV_A);
851		1006
852	#ifndef WIN32	1007	#ifndef _WIN32
853	ev_signal_init (&childev, childcb, SIGCHLD);	1008	ev_signal_init (&childev, childcb, SIGCHLD);
854	ev_set_priority (&childev, EV_MAXPRI);	1009	ev_set_priority (&childev, EV_MAXPRI);
855	ev_signal_start (EV_A_ &childev);	1010	ev_signal_start (EV_A_ &childev);
856	ev_unref (EV_A); /* child watcher should not keep loop alive */	1011	ev_unref (EV_A); /* child watcher should not keep loop alive */
857	#endif	1012	#endif
858	}	1013	}
859	else	1014	else
860	default_loop = 0;	1015	ev_default_loop_ptr = 0;
861	}	1016	}
862		1017
863	return default_loop;	1018	return ev_default_loop_ptr;
864	}	1019	}
865		1020
866	void	1021	void
867	ev_default_destroy (void)	1022	ev_default_destroy (void)
868	{	1023	{
869	#if EV_MULTIPLICITY	1024	#if EV_MULTIPLICITY
870	struct ev_loop *loop = default_loop;	1025	struct ev_loop *loop = ev_default_loop_ptr;
871	#endif	1026	#endif
872		1027
873	#ifndef WIN32	1028	#ifndef _WIN32
874	ev_ref (EV_A); /* child watcher */	1029	ev_ref (EV_A); /* child watcher */
875	ev_signal_stop (EV_A_ &childev);	1030	ev_signal_stop (EV_A_ &childev);
876	#endif	1031	#endif
877		1032
878	ev_ref (EV_A); /* signal watcher */	1033	ev_ref (EV_A); /* signal watcher */
…		…
886		1041
887	void	1042	void
888	ev_default_fork (void)	1043	ev_default_fork (void)
889	{	1044	{
890	#if EV_MULTIPLICITY	1045	#if EV_MULTIPLICITY
891	struct ev_loop *loop = default_loop;	1046	struct ev_loop *loop = ev_default_loop_ptr;
892	#endif	1047	#endif
893		1048
894	if (method)	1049	if (backend)
895	postfork = 1;	1050	postfork = 1;
896	}	1051	}
897		1052
898	/*****************************************************************************/	1053	/*****************************************************************************/
899		1054
900	static void	1055	static int
		1056	any_pending (EV_P)
		1057	{
		1058	int pri;
		1059
		1060	for (pri = NUMPRI; pri--; )
		1061	if (pendingcnt [pri])
		1062	return 1;
		1063
		1064	return 0;
		1065	}
		1066
		1067	inline void
901	call_pending (EV_P)	1068	call_pending (EV_P)
902	{	1069	{
903	int pri;	1070	int pri;
904		1071
905	for (pri = NUMPRI; pri--; )	1072	for (pri = NUMPRI; pri--; )
906	while (pendingcnt [pri])	1073	while (pendingcnt [pri])
907	{	1074	{
908	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1075	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
909		1076
910	if (p->w)	1077	if (expect_true (p->w))
911	{	1078	{
912	p->w->pending = 0;	1079	p->w->pending = 0;
913	p->w->cb (EV_A_ p->w, p->events);	1080	EV_CB_INVOKE (p->w, p->events);
914	}	1081	}
915	}	1082	}
916	}	1083	}
917		1084
918	static void	1085	inline void
919	timers_reify (EV_P)	1086	timers_reify (EV_P)
920	{	1087	{
921	while (timercnt && ((WT)timers [0])->at <= mn_now)	1088	while (timercnt && ((WT)timers [0])->at <= mn_now)
922	{	1089	{
923	struct ev_timer *w = timers [0];	1090	ev_timer *w = timers [0];
924		1091
925	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1092	assert (("inactive timer on timer heap detected", ev_is_active (w)));
926		1093
927	/* first reschedule or stop timer */	1094	/* first reschedule or stop timer */
928	if (w->repeat)	1095	if (w->repeat)
929	{	1096	{
930	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1097	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1098
931	((WT)w)->at = mn_now + w->repeat;	1099	((WT)w)->at += w->repeat;
		1100	if (((WT)w)->at < mn_now)
		1101	((WT)w)->at = mn_now;
		1102
932	downheap ((WT *)timers, timercnt, 0);	1103	downheap ((WT *)timers, timercnt, 0);
933	}	1104	}
934	else	1105	else
935	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1106	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
936		1107
937	event (EV_A_ (W)w, EV_TIMEOUT);	1108	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
938	}	1109	}
939	}	1110	}
940		1111
941	static void	1112	#if EV_PERIODICS
		1113	inline void
942	periodics_reify (EV_P)	1114	periodics_reify (EV_P)
943	{	1115	{
944	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1116	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
945	{	1117	{
946	struct ev_periodic *w = periodics [0];	1118	ev_periodic *w = periodics [0];
947		1119
948	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1120	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
949		1121
950	/* first reschedule or stop timer */	1122	/* first reschedule or stop timer */
951	if (w->interval)	1123	if (w->reschedule_cb)
952	{	1124	{
		1125	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1126	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1127	downheap ((WT *)periodics, periodiccnt, 0);
		1128	}
		1129	else if (w->interval)
		1130	{
953	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1131	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
954	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1132	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
955	downheap ((WT *)periodics, periodiccnt, 0);	1133	downheap ((WT *)periodics, periodiccnt, 0);
956	}	1134	}
957	else	1135	else
958	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1136	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
959		1137
960	event (EV_A_ (W)w, EV_PERIODIC);	1138	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
961	}	1139	}
962	}	1140	}
963		1141
964	static void	1142	static void
965	periodics_reschedule (EV_P)	1143	periodics_reschedule (EV_P)
…		…
967	int i;	1145	int i;
968		1146
969	/* adjust periodics after time jump */	1147	/* adjust periodics after time jump */
970	for (i = 0; i < periodiccnt; ++i)	1148	for (i = 0; i < periodiccnt; ++i)
971	{	1149	{
972	struct ev_periodic *w = periodics [i];	1150	ev_periodic *w = periodics [i];
973		1151
		1152	if (w->reschedule_cb)
		1153	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
974	if (w->interval)	1154	else if (w->interval)
975	{
976	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1155	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
977
978	if (fabs (diff) >= 1e-4)
979	{
980	ev_periodic_stop (EV_A_ w);
981	ev_periodic_start (EV_A_ w);
982
983	i = 0; /* restart loop, inefficient, but time jumps should be rare */
984	}
985	}
986	}	1156	}
		1157
		1158	/* now rebuild the heap */
		1159	for (i = periodiccnt >> 1; i--; )
		1160	downheap ((WT *)periodics, periodiccnt, i);
987	}	1161	}
		1162	#endif
988		1163
989	inline int	1164	inline int
990	time_update_monotonic (EV_P)	1165	time_update_monotonic (EV_P)
991	{	1166	{
992	mn_now = get_clock ();	1167	mn_now = get_clock ();
993		1168
994	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1169	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
995	{	1170	{
996	rt_now = rtmn_diff + mn_now;	1171	ev_rt_now = rtmn_diff + mn_now;
997	return 0;	1172	return 0;
998	}	1173	}
999	else	1174	else
1000	{	1175	{
1001	now_floor = mn_now;	1176	now_floor = mn_now;
1002	rt_now = ev_time ();	1177	ev_rt_now = ev_time ();
1003	return 1;	1178	return 1;
1004	}	1179	}
1005	}	1180	}
1006		1181
1007	static void	1182	inline void
1008	time_update (EV_P)	1183	time_update (EV_P)
1009	{	1184	{
1010	int i;	1185	int i;
1011		1186
1012	#if EV_USE_MONOTONIC	1187	#if EV_USE_MONOTONIC
…		…
1016	{	1191	{
1017	ev_tstamp odiff = rtmn_diff;	1192	ev_tstamp odiff = rtmn_diff;
1018		1193
1019	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1194	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1020	{	1195	{
1021	rtmn_diff = rt_now - mn_now;	1196	rtmn_diff = ev_rt_now - mn_now;
1022		1197
1023	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1198	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1024	return; /* all is well */	1199	return; /* all is well */
1025		1200
1026	rt_now = ev_time ();	1201	ev_rt_now = ev_time ();
1027	mn_now = get_clock ();	1202	mn_now = get_clock ();
1028	now_floor = mn_now;	1203	now_floor = mn_now;
1029	}	1204	}
1030		1205
		1206	# if EV_PERIODICS
1031	periodics_reschedule (EV_A);	1207	periodics_reschedule (EV_A);
		1208	# endif
1032	/* no timer adjustment, as the monotonic clock doesn't jump */	1209	/* no timer adjustment, as the monotonic clock doesn't jump */
1033	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1210	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1034	}	1211	}
1035	}	1212	}
1036	else	1213	else
1037	#endif	1214	#endif
1038	{	1215	{
1039	rt_now = ev_time ();	1216	ev_rt_now = ev_time ();
1040		1217
1041	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1218	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1042	{	1219	{
		1220	#if EV_PERIODICS
1043	periodics_reschedule (EV_A);	1221	periodics_reschedule (EV_A);
		1222	#endif
1044		1223
1045	/* adjust timers. this is easy, as the offset is the same for all */	1224	/* adjust timers. this is easy, as the offset is the same for all */
1046	for (i = 0; i < timercnt; ++i)	1225	for (i = 0; i < timercnt; ++i)
1047	((WT)timers [i])->at += rt_now - mn_now;	1226	((WT)timers [i])->at += ev_rt_now - mn_now;
1048	}	1227	}
1049		1228
1050	mn_now = rt_now;	1229	mn_now = ev_rt_now;
1051	}	1230	}
1052	}	1231	}
1053		1232
1054	void	1233	void
1055	ev_ref (EV_P)	1234	ev_ref (EV_P)
…		…
1066	static int loop_done;	1245	static int loop_done;
1067		1246
1068	void	1247	void
1069	ev_loop (EV_P_ int flags)	1248	ev_loop (EV_P_ int flags)
1070	{	1249	{
1071	double block;
1072	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1250	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1251	? EVUNLOOP_ONE
		1252	: EVUNLOOP_CANCEL;
1073		1253
1074	do	1254	while (activecnt)
1075	{	1255	{
1076	/* queue check watchers (and execute them) */	1256	/* queue check watchers (and execute them) */
1077	if (expect_false (preparecnt))	1257	if (expect_false (preparecnt))
1078	{	1258	{
1079	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1259	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1086		1266
1087	/* update fd-related kernel structures */	1267	/* update fd-related kernel structures */
1088	fd_reify (EV_A);	1268	fd_reify (EV_A);
1089		1269
1090	/* calculate blocking time */	1270	/* calculate blocking time */
		1271	{
		1272	double block;
1091		1273
1092	/* we only need this for !monotonic clockor timers, but as we basically	1274	if (flags & EVLOOP_NONBLOCK || idlecnt)
1093	always have timers, we just calculate it always */	1275	block = 0.; /* do not block at all */
		1276	else
		1277	{
		1278	/* update time to cancel out callback processing overhead */
1094	#if EV_USE_MONOTONIC	1279	#if EV_USE_MONOTONIC
1095	if (expect_true (have_monotonic))	1280	if (expect_true (have_monotonic))
1096	time_update_monotonic (EV_A);	1281	time_update_monotonic (EV_A);
1097	else	1282	else
1098	#endif	1283	#endif
1099	{	1284	{
1100	rt_now = ev_time ();	1285	ev_rt_now = ev_time ();
1101	mn_now = rt_now;	1286	mn_now = ev_rt_now;
1102	}	1287	}
1103		1288
1104	if (flags & EVLOOP_NONBLOCK || idlecnt)
1105	block = 0.;
1106	else
1107	{
1108	block = MAX_BLOCKTIME;	1289	block = MAX_BLOCKTIME;
1109		1290
1110	if (timercnt)	1291	if (timercnt)
1111	{	1292	{
1112	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1293	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1113	if (block > to) block = to;	1294	if (block > to) block = to;
1114	}	1295	}
1115		1296
		1297	#if EV_PERIODICS
1116	if (periodiccnt)	1298	if (periodiccnt)
1117	{	1299	{
1118	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1300	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1119	if (block > to) block = to;	1301	if (block > to) block = to;
1120	}	1302	}
		1303	#endif
1121		1304
1122	if (block < 0.) block = 0.;	1305	if (expect_false (block < 0.)) block = 0.;
1123	}	1306	}
1124		1307
1125	method_poll (EV_A_ block);	1308	backend_poll (EV_A_ block);
		1309	}
1126		1310
1127	/* update rt_now, do magic */	1311	/* update ev_rt_now, do magic */
1128	time_update (EV_A);	1312	time_update (EV_A);
1129		1313
1130	/* queue pending timers and reschedule them */	1314	/* queue pending timers and reschedule them */
1131	timers_reify (EV_A); /* relative timers called last */	1315	timers_reify (EV_A); /* relative timers called last */
		1316	#if EV_PERIODICS
1132	periodics_reify (EV_A); /* absolute timers called first */	1317	periodics_reify (EV_A); /* absolute timers called first */
		1318	#endif
1133		1319
1134	/* queue idle watchers unless io or timers are pending */	1320	/* queue idle watchers unless other events are pending */
1135	if (!pendingcnt)	1321	if (idlecnt && !any_pending (EV_A))
1136	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1322	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1137		1323
1138	/* queue check watchers, to be executed first */	1324	/* queue check watchers, to be executed first */
1139	if (checkcnt)	1325	if (expect_false (checkcnt))
1140	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1326	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1141		1327
1142	call_pending (EV_A);	1328	call_pending (EV_A);
1143	}
1144	while (activecnt && !loop_done);
1145		1329
1146	if (loop_done != 2)	1330	if (expect_false (loop_done))
1147	loop_done = 0;	1331	break;
		1332	}
		1333
		1334	if (loop_done == EVUNLOOP_ONE)
		1335	loop_done = EVUNLOOP_CANCEL;
1148	}	1336	}
1149		1337
1150	void	1338	void
1151	ev_unloop (EV_P_ int how)	1339	ev_unloop (EV_P_ int how)
1152	{	1340	{
…		…
1205	}	1393	}
1206		1394
1207	/*****************************************************************************/	1395	/*****************************************************************************/
1208		1396
1209	void	1397	void
1210	ev_io_start (EV_P_ struct ev_io *w)	1398	ev_io_start (EV_P_ ev_io *w)
1211	{	1399	{
1212	int fd = w->fd;	1400	int fd = w->fd;
1213		1401
1214	if (ev_is_active (w))	1402	if (expect_false (ev_is_active (w)))
1215	return;	1403	return;
1216		1404
1217	assert (("ev_io_start called with negative fd", fd >= 0));	1405	assert (("ev_io_start called with negative fd", fd >= 0));
1218		1406
1219	ev_start (EV_A_ (W)w, 1);	1407	ev_start (EV_A_ (W)w, 1);
1220	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1408	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1221	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1409	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1222		1410
1223	fd_change (EV_A_ fd);	1411	fd_change (EV_A_ fd);
1224	}	1412	}
1225		1413
1226	void	1414	void
1227	ev_io_stop (EV_P_ struct ev_io *w)	1415	ev_io_stop (EV_P_ ev_io *w)
1228	{	1416	{
1229	ev_clear_pending (EV_A_ (W)w);	1417	ev_clear_pending (EV_A_ (W)w);
1230	if (!ev_is_active (w))	1418	if (expect_false (!ev_is_active (w)))
1231	return;	1419	return;
		1420
		1421	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1232		1422
1233	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1423	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1234	ev_stop (EV_A_ (W)w);	1424	ev_stop (EV_A_ (W)w);
1235		1425
1236	fd_change (EV_A_ w->fd);	1426	fd_change (EV_A_ w->fd);
1237	}	1427	}
1238		1428
1239	void	1429	void
1240	ev_timer_start (EV_P_ struct ev_timer *w)	1430	ev_timer_start (EV_P_ ev_timer *w)
1241	{	1431	{
1242	if (ev_is_active (w))	1432	if (expect_false (ev_is_active (w)))
1243	return;	1433	return;
1244		1434
1245	((WT)w)->at += mn_now;	1435	((WT)w)->at += mn_now;
1246		1436
1247	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.));
1248		1438
1249	ev_start (EV_A_ (W)w, ++timercnt);	1439	ev_start (EV_A_ (W)w, ++timercnt);
1250	array_needsize (timers, timermax, timercnt, (void));	1440	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1251	timers [timercnt - 1] = w;	1441	timers [timercnt - 1] = w;
1252	upheap ((WT *)timers, timercnt - 1);	1442	upheap ((WT *)timers, timercnt - 1);
1253		1443
1254	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1444	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1255	}	1445	}
1256		1446
1257	void	1447	void
1258	ev_timer_stop (EV_P_ struct ev_timer *w)	1448	ev_timer_stop (EV_P_ ev_timer *w)
1259	{	1449	{
1260	ev_clear_pending (EV_A_ (W)w);	1450	ev_clear_pending (EV_A_ (W)w);
1261	if (!ev_is_active (w))	1451	if (expect_false (!ev_is_active (w)))
1262	return;	1452	return;
1263		1453
1264	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1454	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1265		1455
1266	if (((W)w)->active < timercnt--)	1456	if (expect_true (((W)w)->active < timercnt--))
1267	{	1457	{
1268	timers [((W)w)->active - 1] = timers [timercnt];	1458	timers [((W)w)->active - 1] = timers [timercnt];
1269	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1459	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1270	}	1460	}
1271		1461
1272	((WT)w)->at = w->repeat;	1462	((WT)w)->at -= mn_now;
1273		1463
1274	ev_stop (EV_A_ (W)w);	1464	ev_stop (EV_A_ (W)w);
1275	}	1465	}
1276		1466
1277	void	1467	void
1278	ev_timer_again (EV_P_ struct ev_timer *w)	1468	ev_timer_again (EV_P_ ev_timer *w)
1279	{	1469	{
1280	if (ev_is_active (w))	1470	if (ev_is_active (w))
1281	{	1471	{
1282	if (w->repeat)	1472	if (w->repeat)
1283	{	1473	{
1284	((WT)w)->at = mn_now + w->repeat;	1474	((WT)w)->at = mn_now + w->repeat;
1285	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1475	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1286	}	1476	}
1287	else	1477	else
1288	ev_timer_stop (EV_A_ w);	1478	ev_timer_stop (EV_A_ w);
1289	}	1479	}
1290	else if (w->repeat)	1480	else if (w->repeat)
		1481	{
		1482	w->at = w->repeat;
1291	ev_timer_start (EV_A_ w);	1483	ev_timer_start (EV_A_ w);
		1484	}
1292	}	1485	}
1293		1486
		1487	#if EV_PERIODICS
1294	void	1488	void
1295	ev_periodic_start (EV_P_ struct ev_periodic *w)	1489	ev_periodic_start (EV_P_ ev_periodic *w)
1296	{	1490	{
1297	if (ev_is_active (w))	1491	if (expect_false (ev_is_active (w)))
1298	return;	1492	return;
1299		1493
		1494	if (w->reschedule_cb)
		1495	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1496	else if (w->interval)
		1497	{
1300	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.));
1301
1302	/* 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 */
1303	if (w->interval)
1304	((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	}
1305		1502
1306	ev_start (EV_A_ (W)w, ++periodiccnt);	1503	ev_start (EV_A_ (W)w, ++periodiccnt);
1307	array_needsize (periodics, periodicmax, periodiccnt, (void));	1504	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1308	periodics [periodiccnt - 1] = w;	1505	periodics [periodiccnt - 1] = w;
1309	upheap ((WT *)periodics, periodiccnt - 1);	1506	upheap ((WT *)periodics, periodiccnt - 1);
1310		1507
1311	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1508	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1312	}	1509	}
1313		1510
1314	void	1511	void
1315	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1512	ev_periodic_stop (EV_P_ ev_periodic *w)
1316	{	1513	{
1317	ev_clear_pending (EV_A_ (W)w);	1514	ev_clear_pending (EV_A_ (W)w);
1318	if (!ev_is_active (w))	1515	if (expect_false (!ev_is_active (w)))
1319	return;	1516	return;
1320		1517
1321	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1518	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1322		1519
1323	if (((W)w)->active < periodiccnt--)	1520	if (expect_true (((W)w)->active < periodiccnt--))
1324	{	1521	{
1325	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1522	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1326	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1523	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1327	}	1524	}
1328		1525
1329	ev_stop (EV_A_ (W)w);	1526	ev_stop (EV_A_ (W)w);
1330	}	1527	}
1331		1528
1332	void	1529	void
		1530	ev_periodic_again (EV_P_ 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
1333	ev_idle_start (EV_P_ struct ev_idle *w)	1539	ev_idle_start (EV_P_ ev_idle *w)
1334	{	1540	{
1335	if (ev_is_active (w))	1541	if (expect_false (ev_is_active (w)))
1336	return;	1542	return;
1337		1543
1338	ev_start (EV_A_ (W)w, ++idlecnt);	1544	ev_start (EV_A_ (W)w, ++idlecnt);
1339	array_needsize (idles, idlemax, idlecnt, (void));	1545	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1340	idles [idlecnt - 1] = w;	1546	idles [idlecnt - 1] = w;
1341	}	1547	}
1342		1548
1343	void	1549	void
1344	ev_idle_stop (EV_P_ struct ev_idle *w)	1550	ev_idle_stop (EV_P_ ev_idle *w)
1345	{	1551	{
1346	ev_clear_pending (EV_A_ (W)w);	1552	ev_clear_pending (EV_A_ (W)w);
1347	if (ev_is_active (w))	1553	if (expect_false (!ev_is_active (w)))
1348	return;	1554	return;
1349		1555
1350	idles [((W)w)->active - 1] = idles [--idlecnt];	1556	idles [((W)w)->active - 1] = idles [--idlecnt];
1351	ev_stop (EV_A_ (W)w);	1557	ev_stop (EV_A_ (W)w);
1352	}	1558	}
1353		1559
1354	void	1560	void
1355	ev_prepare_start (EV_P_ struct ev_prepare *w)	1561	ev_prepare_start (EV_P_ ev_prepare *w)
1356	{	1562	{
1357	if (ev_is_active (w))	1563	if (expect_false (ev_is_active (w)))
1358	return;	1564	return;
1359		1565
1360	ev_start (EV_A_ (W)w, ++preparecnt);	1566	ev_start (EV_A_ (W)w, ++preparecnt);
1361	array_needsize (prepares, preparemax, preparecnt, (void));	1567	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1362	prepares [preparecnt - 1] = w;	1568	prepares [preparecnt - 1] = w;
1363	}	1569	}
1364		1570
1365	void	1571	void
1366	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1572	ev_prepare_stop (EV_P_ ev_prepare *w)
1367	{	1573	{
1368	ev_clear_pending (EV_A_ (W)w);	1574	ev_clear_pending (EV_A_ (W)w);
1369	if (ev_is_active (w))	1575	if (expect_false (!ev_is_active (w)))
1370	return;	1576	return;
1371		1577
1372	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1578	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1373	ev_stop (EV_A_ (W)w);	1579	ev_stop (EV_A_ (W)w);
1374	}	1580	}
1375		1581
1376	void	1582	void
1377	ev_check_start (EV_P_ struct ev_check *w)	1583	ev_check_start (EV_P_ ev_check *w)
1378	{	1584	{
1379	if (ev_is_active (w))	1585	if (expect_false (ev_is_active (w)))
1380	return;	1586	return;
1381		1587
1382	ev_start (EV_A_ (W)w, ++checkcnt);	1588	ev_start (EV_A_ (W)w, ++checkcnt);
1383	array_needsize (checks, checkmax, checkcnt, (void));	1589	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1384	checks [checkcnt - 1] = w;	1590	checks [checkcnt - 1] = w;
1385	}	1591	}
1386		1592
1387	void	1593	void
1388	ev_check_stop (EV_P_ struct ev_check *w)	1594	ev_check_stop (EV_P_ ev_check *w)
1389	{	1595	{
1390	ev_clear_pending (EV_A_ (W)w);	1596	ev_clear_pending (EV_A_ (W)w);
1391	if (ev_is_active (w))	1597	if (expect_false (!ev_is_active (w)))
1392	return;	1598	return;
1393		1599
1394	checks [((W)w)->active - 1] = checks [--checkcnt];	1600	checks [((W)w)->active - 1] = checks [--checkcnt];
1395	ev_stop (EV_A_ (W)w);	1601	ev_stop (EV_A_ (W)w);
1396	}	1602	}
…		…
1398	#ifndef SA_RESTART	1604	#ifndef SA_RESTART
1399	# define SA_RESTART 0	1605	# define SA_RESTART 0
1400	#endif	1606	#endif
1401		1607
1402	void	1608	void
1403	ev_signal_start (EV_P_ struct ev_signal *w)	1609	ev_signal_start (EV_P_ ev_signal *w)
1404	{	1610	{
1405	#if EV_MULTIPLICITY	1611	#if EV_MULTIPLICITY
1406	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));
1407	#endif	1613	#endif
1408	if (ev_is_active (w))	1614	if (expect_false (ev_is_active (w)))
1409	return;	1615	return;
1410		1616
1411	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));
1412		1618
1413	ev_start (EV_A_ (W)w, 1);	1619	ev_start (EV_A_ (W)w, 1);
1414	array_needsize (signals, signalmax, w->signum, signals_init);	1620	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1415	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1621	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1416		1622
1417	if (!((WL)w)->next)	1623	if (!((WL)w)->next)
1418	{	1624	{
1419	#if WIN32	1625	#if _WIN32
1420	signal (w->signum, sighandler);	1626	signal (w->signum, sighandler);
1421	#else	1627	#else
1422	struct sigaction sa;	1628	struct sigaction sa;
1423	sa.sa_handler = sighandler;	1629	sa.sa_handler = sighandler;
1424	sigfillset (&sa.sa_mask);	1630	sigfillset (&sa.sa_mask);
…		…
1427	#endif	1633	#endif
1428	}	1634	}
1429	}	1635	}
1430		1636
1431	void	1637	void
1432	ev_signal_stop (EV_P_ struct ev_signal *w)	1638	ev_signal_stop (EV_P_ ev_signal *w)
1433	{	1639	{
1434	ev_clear_pending (EV_A_ (W)w);	1640	ev_clear_pending (EV_A_ (W)w);
1435	if (!ev_is_active (w))	1641	if (expect_false (!ev_is_active (w)))
1436	return;	1642	return;
1437		1643
1438	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1644	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1439	ev_stop (EV_A_ (W)w);	1645	ev_stop (EV_A_ (W)w);
1440		1646
1441	if (!signals [w->signum - 1].head)	1647	if (!signals [w->signum - 1].head)
1442	signal (w->signum, SIG_DFL);	1648	signal (w->signum, SIG_DFL);
1443	}	1649	}
1444		1650
1445	void	1651	void
1446	ev_child_start (EV_P_ struct ev_child *w)	1652	ev_child_start (EV_P_ ev_child *w)
1447	{	1653	{
1448	#if EV_MULTIPLICITY	1654	#if EV_MULTIPLICITY
1449	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));
1450	#endif	1656	#endif
1451	if (ev_is_active (w))	1657	if (expect_false (ev_is_active (w)))
1452	return;	1658	return;
1453		1659
1454	ev_start (EV_A_ (W)w, 1);	1660	ev_start (EV_A_ (W)w, 1);
1455	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1661	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1456	}	1662	}
1457		1663
1458	void	1664	void
1459	ev_child_stop (EV_P_ struct ev_child *w)	1665	ev_child_stop (EV_P_ ev_child *w)
1460	{	1666	{
1461	ev_clear_pending (EV_A_ (W)w);	1667	ev_clear_pending (EV_A_ (W)w);
1462	if (ev_is_active (w))	1668	if (expect_false (!ev_is_active (w)))
1463	return;	1669	return;
1464		1670
1465	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1671	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1466	ev_stop (EV_A_ (W)w);	1672	ev_stop (EV_A_ (W)w);
1467	}	1673	}
1468		1674
		1675	#if EV_MULTIPLICITY
		1676	void
		1677	ev_embed_sweep (EV_P_ ev_embed *w)
		1678	{
		1679	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1680	}
		1681
		1682	static void
		1683	embed_cb (EV_P_ ev_io *io, int revents)
		1684	{
		1685	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		1686
		1687	if (ev_cb (w))
		1688	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1689	else
		1690	ev_embed_sweep (loop, w);
		1691	}
		1692
		1693	void
		1694	ev_embed_start (EV_P_ ev_embed *w)
		1695	{
		1696	if (expect_false (ev_is_active (w)))
		1697	return;
		1698
		1699	{
		1700	struct ev_loop *loop = w->loop;
		1701	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1702	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1703	}
		1704
		1705	ev_set_priority (&w->io, ev_priority (w));
		1706	ev_io_start (EV_A_ &w->io);
		1707	ev_start (EV_A_ (W)w, 1);
		1708	}
		1709
		1710	void
		1711	ev_embed_stop (EV_P_ ev_embed *w)
		1712	{
		1713	ev_clear_pending (EV_A_ (W)w);
		1714	if (expect_false (!ev_is_active (w)))
		1715	return;
		1716
		1717	ev_io_stop (EV_A_ &w->io);
		1718	ev_stop (EV_A_ (W)w);
		1719	}
		1720	#endif
		1721
1469	/*****************************************************************************/	1722	/*****************************************************************************/
1470		1723
1471	struct ev_once	1724	struct ev_once
1472	{	1725	{
1473	struct ev_io io;	1726	ev_io io;
1474	struct ev_timer to;	1727	ev_timer to;
1475	void (*cb)(int revents, void *arg);	1728	void (*cb)(int revents, void *arg);
1476	void *arg;	1729	void *arg;
1477	};	1730	};
1478		1731
1479	static void	1732	static void
…		…
1488		1741
1489	cb (revents, arg);	1742	cb (revents, arg);
1490	}	1743	}
1491		1744
1492	static void	1745	static void
1493	once_cb_io (EV_P_ struct ev_io *w, int revents)	1746	once_cb_io (EV_P_ ev_io *w, int revents)
1494	{	1747	{
1495	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1748	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1496	}	1749	}
1497		1750
1498	static void	1751	static void
1499	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1752	once_cb_to (EV_P_ ev_timer *w, int revents)
1500	{	1753	{
1501	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1754	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1502	}	1755	}
1503		1756
1504	void	1757	void
1505	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1758	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1506	{	1759	{
1507	struct ev_once *once = ev_malloc (sizeof (struct ev_once));	1760	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1508		1761
1509	if (!once)	1762	if (expect_false (!once))
		1763	{
1510	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1764	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1511	else	1765	return;
1512	{	1766	}
		1767
1513	once->cb = cb;	1768	once->cb = cb;
1514	once->arg = arg;	1769	once->arg = arg;
1515		1770
1516	ev_watcher_init (&once->io, once_cb_io);	1771	ev_init (&once->io, once_cb_io);
1517	if (fd >= 0)	1772	if (fd >= 0)
1518	{	1773	{
1519	ev_io_set (&once->io, fd, events);	1774	ev_io_set (&once->io, fd, events);
1520	ev_io_start (EV_A_ &once->io);	1775	ev_io_start (EV_A_ &once->io);
1521	}	1776	}
1522		1777
1523	ev_watcher_init (&once->to, once_cb_to);	1778	ev_init (&once->to, once_cb_to);
1524	if (timeout >= 0.)	1779	if (timeout >= 0.)
1525	{	1780	{
1526	ev_timer_set (&once->to, timeout, 0.);	1781	ev_timer_set (&once->to, timeout, 0.);
1527	ev_timer_start (EV_A_ &once->to);	1782	ev_timer_start (EV_A_ &once->to);
1528	}
1529	}	1783	}
1530	}	1784	}
1531		1785
		1786	#ifdef __cplusplus
		1787	}
		1788	#endif
		1789

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