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Comparing libev/ev.c (file contents):
Revision 1.130 by root, Fri Nov 23 05:13:48 2007 UTC vs.
Revision 1.188 by root, Thu Dec 20 07:12:57 2007 UTC

…		…
32	#ifdef __cplusplus	32	#ifdef __cplusplus
33	extern "C" {	33	extern "C" {
34	#endif	34	#endif
35		35
36	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
37	# include "config.h"	40	# include "config.h"
		41	# endif
38		42
39	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
40	# ifndef EV_USE_MONOTONIC	44	# ifndef EV_USE_MONOTONIC
41	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
42	# endif	46	# endif
…		…
90	# else	94	# else
91	# define EV_USE_PORT 0	95	# define EV_USE_PORT 0
92	# endif	96	# endif
93	# endif	97	# endif
94		98
		99	# ifndef EV_USE_INOTIFY
		100	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		101	# define EV_USE_INOTIFY 1
		102	# else
		103	# define EV_USE_INOTIFY 0
		104	# endif
		105	# endif
		106
95	#endif	107	#endif
96		108
97	#include <math.h>	109	#include <math.h>
98	#include <stdlib.h>	110	#include <stdlib.h>
99	#include <fcntl.h>	111	#include <fcntl.h>
…		…
106	#include <sys/types.h>	118	#include <sys/types.h>
107	#include <time.h>	119	#include <time.h>
108		120
109	#include <signal.h>	121	#include <signal.h>
110		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
111	#ifndef _WIN32	129	#ifndef _WIN32
112	# include <unistd.h>
113	# include <sys/time.h>	130	# include <sys/time.h>
114	# include <sys/wait.h>	131	# include <sys/wait.h>
		132	# include <unistd.h>
115	#else	133	#else
116	# define WIN32_LEAN_AND_MEAN	134	# define WIN32_LEAN_AND_MEAN
117	# include <windows.h>	135	# include <windows.h>
118	# ifndef EV_SELECT_IS_WINSOCKET	136	# ifndef EV_SELECT_IS_WINSOCKET
119	# define EV_SELECT_IS_WINSOCKET 1	137	# define EV_SELECT_IS_WINSOCKET 1
…		…
152		170
153	#ifndef EV_USE_PORT	171	#ifndef EV_USE_PORT
154	# define EV_USE_PORT 0	172	# define EV_USE_PORT 0
155	#endif	173	#endif
156		174
		175	#ifndef EV_USE_INOTIFY
		176	# define EV_USE_INOTIFY 0
		177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
		182	# else
		183	# define EV_PID_HASHSIZE 16
		184	# endif
		185	#endif
		186
		187	#ifndef EV_INOTIFY_HASHSIZE
		188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
		193	#endif
		194
157	/**/	195	/**/
158		196
159	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
160	# undef EV_USE_MONOTONIC	198	# undef EV_USE_MONOTONIC
161	# define EV_USE_MONOTONIC 0	199	# define EV_USE_MONOTONIC 0
…		…
164	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
165	# undef EV_USE_REALTIME	203	# undef EV_USE_REALTIME
166	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
167	#endif	205	#endif
168		206
		207	#if !EV_STAT_ENABLE
		208	# undef EV_USE_INOTIFY
		209	# define EV_USE_INOTIFY 0
		210	#endif
		211
		212	#if EV_USE_INOTIFY
		213	# include <sys/inotify.h>
		214	#endif
		215
169	#if EV_SELECT_IS_WINSOCKET	216	#if EV_SELECT_IS_WINSOCKET
170	# include <winsock.h>	217	# include <winsock.h>
171	#endif	218	#endif
172		219
173	/**/	220	/**/
174		221
		222	/*
		223	* This is used to avoid floating point rounding problems.
		224	* It is added to ev_rt_now when scheduling periodics
		225	* to ensure progress, time-wise, even when rounding
		226	* errors are against us.
		227	* This value is good at least till the year 4000.
		228	* Better solutions welcome.
		229	*/
		230	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
		231
175	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	232	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
176	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	233	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
177	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
178	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */	234	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
179		235
180	#ifdef EV_H
181	# include EV_H
182	#else
183	# include "ev.h"
184	#endif
185
186	#if __GNUC__ >= 3	236	#if __GNUC__ >= 4
187	# define expect(expr,value) __builtin_expect ((expr),(value))	237	# define expect(expr,value) __builtin_expect ((expr),(value))
188	# define inline static inline	238	# define noinline __attribute__ ((noinline))
189	#else	239	#else
190	# define expect(expr,value) (expr)	240	# define expect(expr,value) (expr)
191	# define inline static	241	# define noinline
		242	# if __STDC_VERSION__ < 199901L
		243	# define inline
		244	# endif
192	#endif	245	#endif
193		246
194	#define expect_false(expr) expect ((expr) != 0, 0)	247	#define expect_false(expr) expect ((expr) != 0, 0)
195	#define expect_true(expr) expect ((expr) != 0, 1)	248	#define expect_true(expr) expect ((expr) != 0, 1)
		249	#define inline_size static inline
		250
		251	#if EV_MINIMAL
		252	# define inline_speed static noinline
		253	#else
		254	# define inline_speed static inline
		255	#endif
196		256
197	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	257	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
198	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	258	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
199		259
200	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	260	#define EMPTY /* required for microsofts broken pseudo-c compiler */
201	#define EMPTY2(a,b) /* used to suppress some warnings */	261	#define EMPTY2(a,b) /* used to suppress some warnings */
202		262
203	typedef struct ev_watcher *W;	263	typedef ev_watcher *W;
204	typedef struct ev_watcher_list *WL;	264	typedef ev_watcher_list *WL;
205	typedef struct ev_watcher_time *WT;	265	typedef ev_watcher_time *WT;
206		266
207	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	267	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
208		268
209	#ifdef _WIN32	269	#ifdef _WIN32
210	# include "ev_win32.c"	270	# include "ev_win32.c"
…		…
212		272
213	/*****************************************************************************/	273	/*****************************************************************************/
214		274
215	static void (*syserr_cb)(const char *msg);	275	static void (*syserr_cb)(const char *msg);
216		276
		277	void
217	void ev_set_syserr_cb (void (*cb)(const char *msg))	278	ev_set_syserr_cb (void (*cb)(const char *msg))
218	{	279	{
219	syserr_cb = cb;	280	syserr_cb = cb;
220	}	281	}
221		282
222	static void	283	static void noinline
223	syserr (const char *msg)	284	syserr (const char *msg)
224	{	285	{
225	if (!msg)	286	if (!msg)
226	msg = "(libev) system error";	287	msg = "(libev) system error";
227		288
…		…
234	}	295	}
235	}	296	}
236		297
237	static void *(*alloc)(void *ptr, long size);	298	static void *(*alloc)(void *ptr, long size);
238		299
		300	void
239	void ev_set_allocator (void *(*cb)(void *ptr, long size))	301	ev_set_allocator (void *(*cb)(void *ptr, long size))
240	{	302	{
241	alloc = cb;	303	alloc = cb;
242	}	304	}
243		305
244	static void *	306	inline_speed void *
245	ev_realloc (void *ptr, long size)	307	ev_realloc (void *ptr, long size)
246	{	308	{
247	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	309	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
248		310
249	if (!ptr && size)	311	if (!ptr && size)
…		…
273	typedef struct	335	typedef struct
274	{	336	{
275	W w;	337	W w;
276	int events;	338	int events;
277	} ANPENDING;	339	} ANPENDING;
		340
		341	#if EV_USE_INOTIFY
		342	typedef struct
		343	{
		344	WL head;
		345	} ANFS;
		346	#endif
278		347
279	#if EV_MULTIPLICITY	348	#if EV_MULTIPLICITY
280		349
281	struct ev_loop	350	struct ev_loop
282	{	351	{
…		…
316	gettimeofday (&tv, 0);	385	gettimeofday (&tv, 0);
317	return tv.tv_sec + tv.tv_usec * 1e-6;	386	return tv.tv_sec + tv.tv_usec * 1e-6;
318	#endif	387	#endif
319	}	388	}
320		389
321	inline ev_tstamp	390	ev_tstamp inline_size
322	get_clock (void)	391	get_clock (void)
323	{	392	{
324	#if EV_USE_MONOTONIC	393	#if EV_USE_MONOTONIC
325	if (expect_true (have_monotonic))	394	if (expect_true (have_monotonic))
326	{	395	{
…		…
339	{	408	{
340	return ev_rt_now;	409	return ev_rt_now;
341	}	410	}
342	#endif	411	#endif
343		412
344	#define array_roundsize(type,n) (((n) | 4) & ~3)	413	int inline_size
		414	array_nextsize (int elem, int cur, int cnt)
		415	{
		416	int ncur = cur + 1;
		417
		418	do
		419	ncur <<= 1;
		420	while (cnt > ncur);
		421
		422	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		423	if (elem * ncur > 4096)
		424	{
		425	ncur *= elem;
		426	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		427	ncur = ncur - sizeof (void *) * 4;
		428	ncur /= elem;
		429	}
		430
		431	return ncur;
		432	}
		433
		434	static noinline void *
		435	array_realloc (int elem, void *base, int *cur, int cnt)
		436	{
		437	*cur = array_nextsize (elem, *cur, cnt);
		438	return ev_realloc (base, elem * *cur);
		439	}
345		440
346	#define array_needsize(type,base,cur,cnt,init) \	441	#define array_needsize(type,base,cur,cnt,init) \
347	if (expect_false ((cnt) > cur)) \	442	if (expect_false ((cnt) > (cur))) \
348	{ \	443	{ \
349	int newcnt = cur; \	444	int ocur_ = (cur); \
350	do \	445	(base) = (type *)array_realloc \
351	{ \	446	(sizeof (type), (base), &(cur), (cnt)); \
352	newcnt = array_roundsize (type, newcnt << 1); \	447	init ((base) + (ocur_), (cur) - ocur_); \
353	} \
354	while ((cnt) > newcnt); \
355	\
356	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
357	init (base + cur, newcnt - cur); \
358	cur = newcnt; \
359	}	448	}
360		449
		450	#if 0
361	#define array_slim(type,stem) \	451	#define array_slim(type,stem) \
362	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	452	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
363	{ \	453	{ \
364	stem ## max = array_roundsize (stem ## cnt >> 1); \	454	stem ## max = array_roundsize (stem ## cnt >> 1); \
365	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	455	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
366	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	456	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
367	}	457	}
		458	#endif
368		459
369	#define array_free(stem, idx) \	460	#define array_free(stem, idx) \
370	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	461	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
371		462
372	/*****************************************************************************/	463	/*****************************************************************************/
373		464
374	static void	465	void noinline
		466	ev_feed_event (EV_P_ void *w, int revents)
		467	{
		468	W w_ = (W)w;
		469	int pri = ABSPRI (w_);
		470
		471	if (expect_false (w_->pending))
		472	pendings [pri][w_->pending - 1].events |= revents;
		473	else
		474	{
		475	w_->pending = ++pendingcnt [pri];
		476	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		477	pendings [pri][w_->pending - 1].w = w_;
		478	pendings [pri][w_->pending - 1].events = revents;
		479	}
		480	}
		481
		482	void inline_speed
		483	queue_events (EV_P_ W *events, int eventcnt, int type)
		484	{
		485	int i;
		486
		487	for (i = 0; i < eventcnt; ++i)
		488	ev_feed_event (EV_A_ events [i], type);
		489	}
		490
		491	/*****************************************************************************/
		492
		493	void inline_size
375	anfds_init (ANFD *base, int count)	494	anfds_init (ANFD *base, int count)
376	{	495	{
377	while (count--)	496	while (count--)
378	{	497	{
379	base->head = 0;	498	base->head = 0;
…		…
382		501
383	++base;	502	++base;
384	}	503	}
385	}	504	}
386		505
387	void	506	void inline_speed
388	ev_feed_event (EV_P_ void *w, int revents)
389	{
390	W w_ = (W)w;
391
392	if (expect_false (w_->pending))
393	{
394	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
395	return;
396	}
397
398	w_->pending = ++pendingcnt [ABSPRI (w_)];
399	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
400	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
401	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
402	}
403
404	static void
405	queue_events (EV_P_ W *events, int eventcnt, int type)
406	{
407	int i;
408
409	for (i = 0; i < eventcnt; ++i)
410	ev_feed_event (EV_A_ events [i], type);
411	}
412
413	inline void
414	fd_event (EV_P_ int fd, int revents)	507	fd_event (EV_P_ int fd, int revents)
415	{	508	{
416	ANFD *anfd = anfds + fd;	509	ANFD *anfd = anfds + fd;
417	struct ev_io *w;	510	ev_io *w;
418		511
419	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	512	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
420	{	513	{
421	int ev = w->events & revents;	514	int ev = w->events & revents;
422		515
423	if (ev)	516	if (ev)
424	ev_feed_event (EV_A_ (W)w, ev);	517	ev_feed_event (EV_A_ (W)w, ev);
…		…
426	}	519	}
427		520
428	void	521	void
429	ev_feed_fd_event (EV_P_ int fd, int revents)	522	ev_feed_fd_event (EV_P_ int fd, int revents)
430	{	523	{
		524	if (fd >= 0 && fd < anfdmax)
431	fd_event (EV_A_ fd, revents);	525	fd_event (EV_A_ fd, revents);
432	}	526	}
433		527
434	/*****************************************************************************/	528	void inline_size
435
436	inline void
437	fd_reify (EV_P)	529	fd_reify (EV_P)
438	{	530	{
439	int i;	531	int i;
440		532
441	for (i = 0; i < fdchangecnt; ++i)	533	for (i = 0; i < fdchangecnt; ++i)
442	{	534	{
443	int fd = fdchanges [i];	535	int fd = fdchanges [i];
444	ANFD *anfd = anfds + fd;	536	ANFD *anfd = anfds + fd;
445	struct ev_io *w;	537	ev_io *w;
446		538
447	int events = 0;	539	unsigned char events = 0;
448		540
449	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	541	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
450	events |= w->events;	542	events |= (unsigned char)w->events;
451		543
452	#if EV_SELECT_IS_WINSOCKET	544	#if EV_SELECT_IS_WINSOCKET
453	if (events)	545	if (events)
454	{	546	{
455	unsigned long argp;	547	unsigned long argp;
456	anfd->handle = _get_osfhandle (fd);	548	anfd->handle = _get_osfhandle (fd);
457	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	549	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
458	}	550	}
459	#endif	551	#endif
460		552
		553	{
		554	unsigned char o_events = anfd->events;
		555	unsigned char o_reify = anfd->reify;
		556
461	anfd->reify = 0;	557	anfd->reify = 0;
462
463	backend_modify (EV_A_ fd, anfd->events, events);
464	anfd->events = events;	558	anfd->events = events;
		559
		560	if (o_events != events || o_reify & EV_IOFDSET)
		561	backend_modify (EV_A_ fd, o_events, events);
		562	}
465	}	563	}
466		564
467	fdchangecnt = 0;	565	fdchangecnt = 0;
468	}	566	}
469		567
470	static void	568	void inline_size
471	fd_change (EV_P_ int fd)	569	fd_change (EV_P_ int fd, int flags)
472	{	570	{
473	if (expect_false (anfds [fd].reify))	571	unsigned char reify = anfds [fd].reify;
474	return;
475
476	anfds [fd].reify = 1;	572	anfds [fd].reify |= flags;
477		573
		574	if (expect_true (!reify))
		575	{
478	++fdchangecnt;	576	++fdchangecnt;
479	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	577	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
480	fdchanges [fdchangecnt - 1] = fd;	578	fdchanges [fdchangecnt - 1] = fd;
		579	}
481	}	580	}
482		581
483	static void	582	void inline_speed
484	fd_kill (EV_P_ int fd)	583	fd_kill (EV_P_ int fd)
485	{	584	{
486	struct ev_io *w;	585	ev_io *w;
487		586
488	while ((w = (struct ev_io *)anfds [fd].head))	587	while ((w = (ev_io *)anfds [fd].head))
489	{	588	{
490	ev_io_stop (EV_A_ w);	589	ev_io_stop (EV_A_ w);
491	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	590	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
492	}	591	}
493	}	592	}
494		593
495	inline int	594	int inline_size
496	fd_valid (int fd)	595	fd_valid (int fd)
497	{	596	{
498	#ifdef _WIN32	597	#ifdef _WIN32
499	return _get_osfhandle (fd) != -1;	598	return _get_osfhandle (fd) != -1;
500	#else	599	#else
501	return fcntl (fd, F_GETFD) != -1;	600	return fcntl (fd, F_GETFD) != -1;
502	#endif	601	#endif
503	}	602	}
504		603
505	/* called on EBADF to verify fds */	604	/* called on EBADF to verify fds */
506	static void	605	static void noinline
507	fd_ebadf (EV_P)	606	fd_ebadf (EV_P)
508	{	607	{
509	int fd;	608	int fd;
510		609
511	for (fd = 0; fd < anfdmax; ++fd)	610	for (fd = 0; fd < anfdmax; ++fd)
…		…
513	if (!fd_valid (fd) == -1 && errno == EBADF)	612	if (!fd_valid (fd) == -1 && errno == EBADF)
514	fd_kill (EV_A_ fd);	613	fd_kill (EV_A_ fd);
515	}	614	}
516		615
517	/* called on ENOMEM in select/poll to kill some fds and retry */	616	/* called on ENOMEM in select/poll to kill some fds and retry */
518	static void	617	static void noinline
519	fd_enomem (EV_P)	618	fd_enomem (EV_P)
520	{	619	{
521	int fd;	620	int fd;
522		621
523	for (fd = anfdmax; fd--; )	622	for (fd = anfdmax; fd--; )
…		…
527	return;	626	return;
528	}	627	}
529	}	628	}
530		629
531	/* usually called after fork if backend needs to re-arm all fds from scratch */	630	/* usually called after fork if backend needs to re-arm all fds from scratch */
532	static void	631	static void noinline
533	fd_rearm_all (EV_P)	632	fd_rearm_all (EV_P)
534	{	633	{
535	int fd;	634	int fd;
536		635
537	/* this should be highly optimised to not do anything but set a flag */
538	for (fd = 0; fd < anfdmax; ++fd)	636	for (fd = 0; fd < anfdmax; ++fd)
539	if (anfds [fd].events)	637	if (anfds [fd].events)
540	{	638	{
541	anfds [fd].events = 0;	639	anfds [fd].events = 0;
542	fd_change (EV_A_ fd);	640	fd_change (EV_A_ fd, EV_IOFDSET | 1);
543	}	641	}
544	}	642	}
545		643
546	/*****************************************************************************/	644	/*****************************************************************************/
547		645
548	static void	646	void inline_speed
549	upheap (WT *heap, int k)	647	upheap (WT *heap, int k)
550	{	648	{
551	WT w = heap [k];	649	WT w = heap [k];
552		650
553	while (k && heap [k >> 1]->at > w->at)	651	while (k)
554	{	652	{
		653	int p = (k - 1) >> 1;
		654
		655	if (heap [p]->at <= w->at)
		656	break;
		657
555	heap [k] = heap [k >> 1];	658	heap [k] = heap [p];
556	((W)heap [k])->active = k + 1;	659	((W)heap [k])->active = k + 1;
557	k >>= 1;	660	k = p;
558	}	661	}
559		662
560	heap [k] = w;	663	heap [k] = w;
561	((W)heap [k])->active = k + 1;	664	((W)heap [k])->active = k + 1;
562
563	}	665	}
564		666
565	static void	667	void inline_speed
566	downheap (WT *heap, int N, int k)	668	downheap (WT *heap, int N, int k)
567	{	669	{
568	WT w = heap [k];	670	WT w = heap [k];
569		671
570	while (k < (N >> 1))	672	for (;;)
571	{	673	{
572	int j = k << 1;	674	int c = (k << 1) + 1;
573		675
574	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	676	if (c >= N)
575	++j;
576
577	if (w->at <= heap [j]->at)
578	break;	677	break;
579		678
		679	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		680	? 1 : 0;
		681
		682	if (w->at <= heap [c]->at)
		683	break;
		684
580	heap [k] = heap [j];	685	heap [k] = heap [c];
581	((W)heap [k])->active = k + 1;	686	((W)heap [k])->active = k + 1;
		687
582	k = j;	688	k = c;
583	}	689	}
584		690
585	heap [k] = w;	691	heap [k] = w;
586	((W)heap [k])->active = k + 1;	692	((W)heap [k])->active = k + 1;
587	}	693	}
588		694
589	inline void	695	void inline_size
590	adjustheap (WT *heap, int N, int k)	696	adjustheap (WT *heap, int N, int k)
591	{	697	{
592	upheap (heap, k);	698	upheap (heap, k);
593	downheap (heap, N, k);	699	downheap (heap, N, k);
594	}	700	}
…		…
604	static ANSIG *signals;	710	static ANSIG *signals;
605	static int signalmax;	711	static int signalmax;
606		712
607	static int sigpipe [2];	713	static int sigpipe [2];
608	static sig_atomic_t volatile gotsig;	714	static sig_atomic_t volatile gotsig;
609	static struct ev_io sigev;	715	static ev_io sigev;
610		716
611	static void	717	void inline_size
612	signals_init (ANSIG *base, int count)	718	signals_init (ANSIG *base, int count)
613	{	719	{
614	while (count--)	720	while (count--)
615	{	721	{
616	base->head = 0;	722	base->head = 0;
…		…
636	write (sigpipe [1], &signum, 1);	742	write (sigpipe [1], &signum, 1);
637	errno = old_errno;	743	errno = old_errno;
638	}	744	}
639	}	745	}
640		746
641	void	747	void noinline
642	ev_feed_signal_event (EV_P_ int signum)	748	ev_feed_signal_event (EV_P_ int signum)
643	{	749	{
644	WL w;	750	WL w;
645		751
646	#if EV_MULTIPLICITY	752	#if EV_MULTIPLICITY
…		…
657	for (w = signals [signum].head; w; w = w->next)	763	for (w = signals [signum].head; w; w = w->next)
658	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	764	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
659	}	765	}
660		766
661	static void	767	static void
662	sigcb (EV_P_ struct ev_io *iow, int revents)	768	sigcb (EV_P_ ev_io *iow, int revents)
663	{	769	{
664	int signum;	770	int signum;
665		771
666	read (sigpipe [0], &revents, 1);	772	read (sigpipe [0], &revents, 1);
667	gotsig = 0;	773	gotsig = 0;
…		…
669	for (signum = signalmax; signum--; )	775	for (signum = signalmax; signum--; )
670	if (signals [signum].gotsig)	776	if (signals [signum].gotsig)
671	ev_feed_signal_event (EV_A_ signum + 1);	777	ev_feed_signal_event (EV_A_ signum + 1);
672	}	778	}
673		779
674	static void	780	void inline_speed
675	fd_intern (int fd)	781	fd_intern (int fd)
676	{	782	{
677	#ifdef _WIN32	783	#ifdef _WIN32
678	int arg = 1;	784	int arg = 1;
679	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	785	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
681	fcntl (fd, F_SETFD, FD_CLOEXEC);	787	fcntl (fd, F_SETFD, FD_CLOEXEC);
682	fcntl (fd, F_SETFL, O_NONBLOCK);	788	fcntl (fd, F_SETFL, O_NONBLOCK);
683	#endif	789	#endif
684	}	790	}
685		791
686	static void	792	static void noinline
687	siginit (EV_P)	793	siginit (EV_P)
688	{	794	{
689	fd_intern (sigpipe [0]);	795	fd_intern (sigpipe [0]);
690	fd_intern (sigpipe [1]);	796	fd_intern (sigpipe [1]);
691		797
…		…
694	ev_unref (EV_A); /* child watcher should not keep loop alive */	800	ev_unref (EV_A); /* child watcher should not keep loop alive */
695	}	801	}
696		802
697	/*****************************************************************************/	803	/*****************************************************************************/
698		804
699	static struct ev_child *childs [PID_HASHSIZE];	805	static WL childs [EV_PID_HASHSIZE];
700		806
701	#ifndef _WIN32	807	#ifndef _WIN32
702		808
703	static struct ev_signal childev;	809	static ev_signal childev;
		810
		811	void inline_speed
		812	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		813	{
		814	ev_child *w;
		815
		816	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		817	if (w->pid == pid || !w->pid)
		818	{
		819	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		820	w->rpid = pid;
		821	w->rstatus = status;
		822	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		823	}
		824	}
704		825
705	#ifndef WCONTINUED	826	#ifndef WCONTINUED
706	# define WCONTINUED 0	827	# define WCONTINUED 0
707	#endif	828	#endif
708		829
709	static void	830	static void
710	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
711	{
712	struct ev_child *w;
713
714	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
715	if (w->pid == pid || !w->pid)
716	{
717	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
718	w->rpid = pid;
719	w->rstatus = status;
720	ev_feed_event (EV_A_ (W)w, EV_CHILD);
721	}
722	}
723
724	static void
725	childcb (EV_P_ struct ev_signal *sw, int revents)	831	childcb (EV_P_ ev_signal *sw, int revents)
726	{	832	{
727	int pid, status;	833	int pid, status;
728		834
		835	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
729	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	836	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
730	{	837	if (!WCONTINUED
		838	|| errno != EINVAL
		839	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		840	return;
		841
731	/* make sure we are called again until all childs have been reaped */	842	/* make sure we are called again until all childs have been reaped */
		843	/* we need to do it this way so that the callback gets called before we continue */
732	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	844	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
733		845
734	child_reap (EV_A_ sw, pid, pid, status);	846	child_reap (EV_A_ sw, pid, pid, status);
		847	if (EV_PID_HASHSIZE > 1)
735	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	848	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
736	}
737	}	849	}
738		850
739	#endif	851	#endif
740		852
741	/*****************************************************************************/	853	/*****************************************************************************/
…		…
767	{	879	{
768	return EV_VERSION_MINOR;	880	return EV_VERSION_MINOR;
769	}	881	}
770		882
771	/* return true if we are running with elevated privileges and should ignore env variables */	883	/* return true if we are running with elevated privileges and should ignore env variables */
772	static int	884	int inline_size
773	enable_secure (void)	885	enable_secure (void)
774	{	886	{
775	#ifdef _WIN32	887	#ifdef _WIN32
776	return 0;	888	return 0;
777	#else	889	#else
…		…
795	}	907	}
796		908
797	unsigned int	909	unsigned int
798	ev_recommended_backends (void)	910	ev_recommended_backends (void)
799	{	911	{
800	unsigned int flags = ev_recommended_backends ();	912	unsigned int flags = ev_supported_backends ();
801		913
802	#ifndef __NetBSD__	914	#ifndef __NetBSD__
803	/* kqueue is borked on everything but netbsd apparently */	915	/* kqueue is borked on everything but netbsd apparently */
804	/* it usually doesn't work correctly on anything but sockets and pipes */	916	/* it usually doesn't work correctly on anything but sockets and pipes */
805	flags &= ~EVBACKEND_KQUEUE;	917	flags &= ~EVBACKEND_KQUEUE;
…		…
811		923
812	return flags;	924	return flags;
813	}	925	}
814		926
815	unsigned int	927	unsigned int
		928	ev_embeddable_backends (void)
		929	{
		930	return EVBACKEND_EPOLL
		931	| EVBACKEND_KQUEUE
		932	| EVBACKEND_PORT;
		933	}
		934
		935	unsigned int
816	ev_backend (EV_P)	936	ev_backend (EV_P)
817	{	937	{
818	return backend;	938	return backend;
819	}	939	}
820		940
821	static void	941	unsigned int
		942	ev_loop_count (EV_P)
		943	{
		944	return loop_count;
		945	}
		946
		947	static void noinline
822	loop_init (EV_P_ unsigned int flags)	948	loop_init (EV_P_ unsigned int flags)
823	{	949	{
824	if (!backend)	950	if (!backend)
825	{	951	{
826	#if EV_USE_MONOTONIC	952	#if EV_USE_MONOTONIC
…		…
834	ev_rt_now = ev_time ();	960	ev_rt_now = ev_time ();
835	mn_now = get_clock ();	961	mn_now = get_clock ();
836	now_floor = mn_now;	962	now_floor = mn_now;
837	rtmn_diff = ev_rt_now - mn_now;	963	rtmn_diff = ev_rt_now - mn_now;
838		964
		965	/* pid check not overridable via env */
		966	#ifndef _WIN32
		967	if (flags & EVFLAG_FORKCHECK)
		968	curpid = getpid ();
		969	#endif
		970
839	if (!(flags & EVFLAG_NOENV)	971	if (!(flags & EVFLAG_NOENV)
840	&& !enable_secure ()	972	&& !enable_secure ()
841	&& getenv ("LIBEV_FLAGS"))	973	&& getenv ("LIBEV_FLAGS"))
842	flags = atoi (getenv ("LIBEV_FLAGS"));	974	flags = atoi (getenv ("LIBEV_FLAGS"));
843		975
844	if (!(flags & 0x0000ffffUL))	976	if (!(flags & 0x0000ffffUL))
845	flags |= ev_recommended_backends ();	977	flags |= ev_recommended_backends ();
846		978
847	backend = 0;	979	backend = 0;
		980	backend_fd = -1;
		981	#if EV_USE_INOTIFY
		982	fs_fd = -2;
		983	#endif
		984
848	#if EV_USE_PORT	985	#if EV_USE_PORT
849	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	986	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
850	#endif	987	#endif
851	#if EV_USE_KQUEUE	988	#if EV_USE_KQUEUE
852	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	989	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
864	ev_init (&sigev, sigcb);	1001	ev_init (&sigev, sigcb);
865	ev_set_priority (&sigev, EV_MAXPRI);	1002	ev_set_priority (&sigev, EV_MAXPRI);
866	}	1003	}
867	}	1004	}
868		1005
869	static void	1006	static void noinline
870	loop_destroy (EV_P)	1007	loop_destroy (EV_P)
871	{	1008	{
872	int i;	1009	int i;
		1010
		1011	#if EV_USE_INOTIFY
		1012	if (fs_fd >= 0)
		1013	close (fs_fd);
		1014	#endif
		1015
		1016	if (backend_fd >= 0)
		1017	close (backend_fd);
873		1018
874	#if EV_USE_PORT	1019	#if EV_USE_PORT
875	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1020	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
876	#endif	1021	#endif
877	#if EV_USE_KQUEUE	1022	#if EV_USE_KQUEUE
…		…
886	#if EV_USE_SELECT	1031	#if EV_USE_SELECT
887	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1032	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
888	#endif	1033	#endif
889		1034
890	for (i = NUMPRI; i--; )	1035	for (i = NUMPRI; i--; )
		1036	{
891	array_free (pending, [i]);	1037	array_free (pending, [i]);
		1038	#if EV_IDLE_ENABLE
		1039	array_free (idle, [i]);
		1040	#endif
		1041	}
		1042
		1043	ev_free (anfds); anfdmax = 0;
892		1044
893	/* have to use the microsoft-never-gets-it-right macro */	1045	/* have to use the microsoft-never-gets-it-right macro */
894	array_free (fdchange, EMPTY0);	1046	array_free (fdchange, EMPTY);
895	array_free (timer, EMPTY0);	1047	array_free (timer, EMPTY);
896	#if EV_PERIODICS	1048	#if EV_PERIODIC_ENABLE
897	array_free (periodic, EMPTY0);	1049	array_free (periodic, EMPTY);
898	#endif	1050	#endif
		1051	#if EV_FORK_ENABLE
899	array_free (idle, EMPTY0);	1052	array_free (fork, EMPTY);
		1053	#endif
900	array_free (prepare, EMPTY0);	1054	array_free (prepare, EMPTY);
901	array_free (check, EMPTY0);	1055	array_free (check, EMPTY);
902		1056
903	backend = 0;	1057	backend = 0;
904	}	1058	}
905		1059
906	static void	1060	void inline_size infy_fork (EV_P);
		1061
		1062	void inline_size
907	loop_fork (EV_P)	1063	loop_fork (EV_P)
908	{	1064	{
909	#if EV_USE_PORT	1065	#if EV_USE_PORT
910	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1066	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
911	#endif	1067	#endif
912	#if EV_USE_KQUEUE	1068	#if EV_USE_KQUEUE
913	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1069	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
914	#endif	1070	#endif
915	#if EV_USE_EPOLL	1071	#if EV_USE_EPOLL
916	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1072	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1073	#endif
		1074	#if EV_USE_INOTIFY
		1075	infy_fork (EV_A);
917	#endif	1076	#endif
918		1077
919	if (ev_is_active (&sigev))	1078	if (ev_is_active (&sigev))
920	{	1079	{
921	/* default loop */	1080	/* default loop */
…		…
1037	postfork = 1;	1196	postfork = 1;
1038	}	1197	}
1039		1198
1040	/*****************************************************************************/	1199	/*****************************************************************************/
1041		1200
1042	static int	1201	void
1043	any_pending (EV_P)	1202	ev_invoke (EV_P_ void *w, int revents)
1044	{	1203	{
1045	int pri;	1204	EV_CB_INVOKE ((W)w, revents);
1046
1047	for (pri = NUMPRI; pri--; )
1048	if (pendingcnt [pri])
1049	return 1;
1050
1051	return 0;
1052	}	1205	}
1053		1206
1054	inline void	1207	void inline_speed
1055	call_pending (EV_P)	1208	call_pending (EV_P)
1056	{	1209	{
1057	int pri;	1210	int pri;
1058		1211
1059	for (pri = NUMPRI; pri--; )	1212	for (pri = NUMPRI; pri--; )
…		…
1061	{	1214	{
1062	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1215	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1063		1216
1064	if (expect_true (p->w))	1217	if (expect_true (p->w))
1065	{	1218	{
		1219	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1220
1066	p->w->pending = 0;	1221	p->w->pending = 0;
1067	EV_CB_INVOKE (p->w, p->events);	1222	EV_CB_INVOKE (p->w, p->events);
1068	}	1223	}
1069	}	1224	}
1070	}	1225	}
1071		1226
1072	inline void	1227	void inline_size
1073	timers_reify (EV_P)	1228	timers_reify (EV_P)
1074	{	1229	{
1075	while (timercnt && ((WT)timers [0])->at <= mn_now)	1230	while (timercnt && ((WT)timers [0])->at <= mn_now)
1076	{	1231	{
1077	struct ev_timer *w = timers [0];	1232	ev_timer *w = (ev_timer *)timers [0];
1078		1233
1079	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1234	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1080		1235
1081	/* first reschedule or stop timer */	1236	/* first reschedule or stop timer */
1082	if (w->repeat)	1237	if (w->repeat)
1083	{	1238	{
1084	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1239	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1085		1240
1086	((WT)w)->at += w->repeat;	1241	((WT)w)->at += w->repeat;
1087	if (((WT)w)->at < mn_now)	1242	if (((WT)w)->at < mn_now)
1088	((WT)w)->at = mn_now;	1243	((WT)w)->at = mn_now;
1089		1244
1090	downheap ((WT *)timers, timercnt, 0);	1245	downheap (timers, timercnt, 0);
1091	}	1246	}
1092	else	1247	else
1093	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1248	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1094		1249
1095	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1250	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1096	}	1251	}
1097	}	1252	}
1098		1253
1099	#if EV_PERIODICS	1254	#if EV_PERIODIC_ENABLE
1100	inline void	1255	void inline_size
1101	periodics_reify (EV_P)	1256	periodics_reify (EV_P)
1102	{	1257	{
1103	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1258	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1104	{	1259	{
1105	struct ev_periodic *w = periodics [0];	1260	ev_periodic *w = (ev_periodic *)periodics [0];
1106		1261
1107	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1262	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1108		1263
1109	/* first reschedule or stop timer */	1264	/* first reschedule or stop timer */
1110	if (w->reschedule_cb)	1265	if (w->reschedule_cb)
1111	{	1266	{
1112	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1267	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1113	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1268	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1114	downheap ((WT *)periodics, periodiccnt, 0);	1269	downheap (periodics, periodiccnt, 0);
1115	}	1270	}
1116	else if (w->interval)	1271	else if (w->interval)
1117	{	1272	{
1118	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1273	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1274	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1119	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1275	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1120	downheap ((WT *)periodics, periodiccnt, 0);	1276	downheap (periodics, periodiccnt, 0);
1121	}	1277	}
1122	else	1278	else
1123	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1279	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1124		1280
1125	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1281	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1126	}	1282	}
1127	}	1283	}
1128		1284
1129	static void	1285	static void noinline
1130	periodics_reschedule (EV_P)	1286	periodics_reschedule (EV_P)
1131	{	1287	{
1132	int i;	1288	int i;
1133		1289
1134	/* adjust periodics after time jump */	1290	/* adjust periodics after time jump */
1135	for (i = 0; i < periodiccnt; ++i)	1291	for (i = 0; i < periodiccnt; ++i)
1136	{	1292	{
1137	struct ev_periodic *w = periodics [i];	1293	ev_periodic *w = (ev_periodic *)periodics [i];
1138		1294
1139	if (w->reschedule_cb)	1295	if (w->reschedule_cb)
1140	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1296	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1141	else if (w->interval)	1297	else if (w->interval)
1142	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1298	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1143	}	1299	}
1144		1300
1145	/* now rebuild the heap */	1301	/* now rebuild the heap */
1146	for (i = periodiccnt >> 1; i--; )	1302	for (i = periodiccnt >> 1; i--; )
1147	downheap ((WT *)periodics, periodiccnt, i);	1303	downheap (periodics, periodiccnt, i);
1148	}	1304	}
1149	#endif	1305	#endif
1150		1306
1151	inline int	1307	#if EV_IDLE_ENABLE
1152	time_update_monotonic (EV_P)	1308	void inline_size
		1309	idle_reify (EV_P)
1153	{	1310	{
		1311	if (expect_false (idleall))
		1312	{
		1313	int pri;
		1314
		1315	for (pri = NUMPRI; pri--; )
		1316	{
		1317	if (pendingcnt [pri])
		1318	break;
		1319
		1320	if (idlecnt [pri])
		1321	{
		1322	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1323	break;
		1324	}
		1325	}
		1326	}
		1327	}
		1328	#endif
		1329
		1330	void inline_speed
		1331	time_update (EV_P_ ev_tstamp max_block)
		1332	{
		1333	int i;
		1334
		1335	#if EV_USE_MONOTONIC
		1336	if (expect_true (have_monotonic))
		1337	{
		1338	ev_tstamp odiff = rtmn_diff;
		1339
1154	mn_now = get_clock ();	1340	mn_now = get_clock ();
1155		1341
		1342	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1343	/* interpolate in the meantime */
1156	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1344	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1157	{	1345	{
1158	ev_rt_now = rtmn_diff + mn_now;	1346	ev_rt_now = rtmn_diff + mn_now;
1159	return 0;	1347	return;
1160	}	1348	}
1161	else	1349
1162	{
1163	now_floor = mn_now;	1350	now_floor = mn_now;
1164	ev_rt_now = ev_time ();	1351	ev_rt_now = ev_time ();
1165	return 1;
1166	}
1167	}
1168		1352
1169	inline void	1353	/* loop a few times, before making important decisions.
1170	time_update (EV_P)	1354	* on the choice of "4": one iteration isn't enough,
1171	{	1355	* in case we get preempted during the calls to
1172	int i;	1356	* ev_time and get_clock. a second call is almost guaranteed
1173		1357	* to succeed in that case, though. and looping a few more times
1174	#if EV_USE_MONOTONIC	1358	* doesn't hurt either as we only do this on time-jumps or
1175	if (expect_true (have_monotonic))	1359	* in the unlikely event of having been preempted here.
1176	{	1360	*/
1177	if (time_update_monotonic (EV_A))	1361	for (i = 4; --i; )
1178	{	1362	{
1179	ev_tstamp odiff = rtmn_diff;
1180
1181	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1182	{
1183	rtmn_diff = ev_rt_now - mn_now;	1363	rtmn_diff = ev_rt_now - mn_now;
1184		1364
1185	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1365	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1186	return; /* all is well */	1366	return; /* all is well */
1187		1367
1188	ev_rt_now = ev_time ();	1368	ev_rt_now = ev_time ();
1189	mn_now = get_clock ();	1369	mn_now = get_clock ();
1190	now_floor = mn_now;	1370	now_floor = mn_now;
1191	}	1371	}
1192		1372
1193	# if EV_PERIODICS	1373	# if EV_PERIODIC_ENABLE
		1374	periodics_reschedule (EV_A);
		1375	# endif
		1376	/* no timer adjustment, as the monotonic clock doesn't jump */
		1377	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1378	}
		1379	else
		1380	#endif
		1381	{
		1382	ev_rt_now = ev_time ();
		1383
		1384	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1385	{
		1386	#if EV_PERIODIC_ENABLE
1194	periodics_reschedule (EV_A);	1387	periodics_reschedule (EV_A);
1195	# endif	1388	#endif
1196	/* no timer adjustment, as the monotonic clock doesn't jump */
1197	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1198	}
1199	}
1200	else
1201	#endif
1202	{
1203	ev_rt_now = ev_time ();
1204
1205	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1206	{
1207	#if EV_PERIODICS
1208	periodics_reschedule (EV_A);
1209	#endif
1210
1211	/* adjust timers. this is easy, as the offset is the same for all */	1389	/* adjust timers. this is easy, as the offset is the same for all of them */
1212	for (i = 0; i < timercnt; ++i)	1390	for (i = 0; i < timercnt; ++i)
1213	((WT)timers [i])->at += ev_rt_now - mn_now;	1391	((WT)timers [i])->at += ev_rt_now - mn_now;
1214	}	1392	}
1215		1393
1216	mn_now = ev_rt_now;	1394	mn_now = ev_rt_now;
…		…
1232	static int loop_done;	1410	static int loop_done;
1233		1411
1234	void	1412	void
1235	ev_loop (EV_P_ int flags)	1413	ev_loop (EV_P_ int flags)
1236	{	1414	{
1237	double block;
1238	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1415	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1416	? EVUNLOOP_ONE
		1417	: EVUNLOOP_CANCEL;
1239		1418
1240	while (activecnt)	1419	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1420
		1421	do
1241	{	1422	{
		1423	#ifndef _WIN32
		1424	if (expect_false (curpid)) /* penalise the forking check even more */
		1425	if (expect_false (getpid () != curpid))
		1426	{
		1427	curpid = getpid ();
		1428	postfork = 1;
		1429	}
		1430	#endif
		1431
		1432	#if EV_FORK_ENABLE
		1433	/* we might have forked, so queue fork handlers */
		1434	if (expect_false (postfork))
		1435	if (forkcnt)
		1436	{
		1437	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1438	call_pending (EV_A);
		1439	}
		1440	#endif
		1441
1242	/* queue check watchers (and execute them) */	1442	/* queue prepare watchers (and execute them) */
1243	if (expect_false (preparecnt))	1443	if (expect_false (preparecnt))
1244	{	1444	{
1245	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1445	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1246	call_pending (EV_A);	1446	call_pending (EV_A);
1247	}	1447	}
1248		1448
		1449	if (expect_false (!activecnt))
		1450	break;
		1451
1249	/* we might have forked, so reify kernel state if necessary */	1452	/* we might have forked, so reify kernel state if necessary */
1250	if (expect_false (postfork))	1453	if (expect_false (postfork))
1251	loop_fork (EV_A);	1454	loop_fork (EV_A);
1252		1455
1253	/* update fd-related kernel structures */	1456	/* update fd-related kernel structures */
1254	fd_reify (EV_A);	1457	fd_reify (EV_A);
1255		1458
1256	/* calculate blocking time */	1459	/* calculate blocking time */
		1460	{
		1461	ev_tstamp block;
1257		1462
1258	/* we only need this for !monotonic clock or timers, but as we basically	1463	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1259	always have timers, we just calculate it always */	1464	block = 0.; /* do not block at all */
1260	#if EV_USE_MONOTONIC
1261	if (expect_true (have_monotonic))
1262	time_update_monotonic (EV_A);
1263	else	1465	else
1264	#endif
1265	{	1466	{
1266	ev_rt_now = ev_time ();	1467	/* update time to cancel out callback processing overhead */
1267	mn_now = ev_rt_now;	1468	time_update (EV_A_ 1e100);
1268	}
1269		1469
1270	if (flags & EVLOOP_NONBLOCK || idlecnt)
1271	block = 0.;
1272	else
1273	{
1274	block = MAX_BLOCKTIME;	1470	block = MAX_BLOCKTIME;
1275		1471
1276	if (timercnt)	1472	if (timercnt)
1277	{	1473	{
1278	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1474	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1279	if (block > to) block = to;	1475	if (block > to) block = to;
1280	}	1476	}
1281		1477
1282	#if EV_PERIODICS	1478	#if EV_PERIODIC_ENABLE
1283	if (periodiccnt)	1479	if (periodiccnt)
1284	{	1480	{
1285	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1481	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1286	if (block > to) block = to;	1482	if (block > to) block = to;
1287	}	1483	}
1288	#endif	1484	#endif
1289		1485
1290	if (expect_false (block < 0.)) block = 0.;	1486	if (expect_false (block < 0.)) block = 0.;
1291	}	1487	}
1292		1488
		1489	++loop_count;
1293	backend_poll (EV_A_ block);	1490	backend_poll (EV_A_ block);
1294		1491
1295	/* update ev_rt_now, do magic */	1492	/* update ev_rt_now, do magic */
1296	time_update (EV_A);	1493	time_update (EV_A_ block);
		1494	}
1297		1495
1298	/* queue pending timers and reschedule them */	1496	/* queue pending timers and reschedule them */
1299	timers_reify (EV_A); /* relative timers called last */	1497	timers_reify (EV_A); /* relative timers called last */
1300	#if EV_PERIODICS	1498	#if EV_PERIODIC_ENABLE
1301	periodics_reify (EV_A); /* absolute timers called first */	1499	periodics_reify (EV_A); /* absolute timers called first */
1302	#endif	1500	#endif
1303		1501
		1502	#if EV_IDLE_ENABLE
1304	/* queue idle watchers unless io or timers are pending */	1503	/* queue idle watchers unless other events are pending */
1305	if (idlecnt && !any_pending (EV_A))	1504	idle_reify (EV_A);
1306	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1505	#endif
1307		1506
1308	/* queue check watchers, to be executed first */	1507	/* queue check watchers, to be executed first */
1309	if (expect_false (checkcnt))	1508	if (expect_false (checkcnt))
1310	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1509	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1311		1510
1312	call_pending (EV_A);	1511	call_pending (EV_A);
1313		1512
1314	if (expect_false (loop_done))
1315	break;
1316	}	1513	}
		1514	while (expect_true (activecnt && !loop_done));
1317		1515
1318	if (loop_done != 2)	1516	if (loop_done == EVUNLOOP_ONE)
1319	loop_done = 0;	1517	loop_done = EVUNLOOP_CANCEL;
1320	}	1518	}
1321		1519
1322	void	1520	void
1323	ev_unloop (EV_P_ int how)	1521	ev_unloop (EV_P_ int how)
1324	{	1522	{
1325	loop_done = how;	1523	loop_done = how;
1326	}	1524	}
1327		1525
1328	/*****************************************************************************/	1526	/*****************************************************************************/
1329		1527
1330	inline void	1528	void inline_size
1331	wlist_add (WL *head, WL elem)	1529	wlist_add (WL *head, WL elem)
1332	{	1530	{
1333	elem->next = *head;	1531	elem->next = *head;
1334	*head = elem;	1532	*head = elem;
1335	}	1533	}
1336		1534
1337	inline void	1535	void inline_size
1338	wlist_del (WL *head, WL elem)	1536	wlist_del (WL *head, WL elem)
1339	{	1537	{
1340	while (*head)	1538	while (*head)
1341	{	1539	{
1342	if (*head == elem)	1540	if (*head == elem)
…		…
1347		1545
1348	head = &(*head)->next;	1546	head = &(*head)->next;
1349	}	1547	}
1350	}	1548	}
1351		1549
1352	inline void	1550	void inline_speed
1353	ev_clear_pending (EV_P_ W w)	1551	clear_pending (EV_P_ W w)
1354	{	1552	{
1355	if (w->pending)	1553	if (w->pending)
1356	{	1554	{
1357	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1555	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1358	w->pending = 0;	1556	w->pending = 0;
1359	}	1557	}
1360	}	1558	}
1361		1559
1362	inline void	1560	int
		1561	ev_clear_pending (EV_P_ void *w)
		1562	{
		1563	W w_ = (W)w;
		1564	int pending = w_->pending;
		1565
		1566	if (expect_true (pending))
		1567	{
		1568	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1569	w_->pending = 0;
		1570	p->w = 0;
		1571	return p->events;
		1572	}
		1573	else
		1574	return 0;
		1575	}
		1576
		1577	void inline_size
		1578	pri_adjust (EV_P_ W w)
		1579	{
		1580	int pri = w->priority;
		1581	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1582	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1583	w->priority = pri;
		1584	}
		1585
		1586	void inline_speed
1363	ev_start (EV_P_ W w, int active)	1587	ev_start (EV_P_ W w, int active)
1364	{	1588	{
1365	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1589	pri_adjust (EV_A_ w);
1366	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1367
1368	w->active = active;	1590	w->active = active;
1369	ev_ref (EV_A);	1591	ev_ref (EV_A);
1370	}	1592	}
1371		1593
1372	inline void	1594	void inline_size
1373	ev_stop (EV_P_ W w)	1595	ev_stop (EV_P_ W w)
1374	{	1596	{
1375	ev_unref (EV_A);	1597	ev_unref (EV_A);
1376	w->active = 0;	1598	w->active = 0;
1377	}	1599	}
1378		1600
1379	/*****************************************************************************/	1601	/*****************************************************************************/
1380		1602
1381	void	1603	void noinline
1382	ev_io_start (EV_P_ struct ev_io *w)	1604	ev_io_start (EV_P_ ev_io *w)
1383	{	1605	{
1384	int fd = w->fd;	1606	int fd = w->fd;
1385		1607
1386	if (expect_false (ev_is_active (w)))	1608	if (expect_false (ev_is_active (w)))
1387	return;	1609	return;
1388		1610
1389	assert (("ev_io_start called with negative fd", fd >= 0));	1611	assert (("ev_io_start called with negative fd", fd >= 0));
1390		1612
1391	ev_start (EV_A_ (W)w, 1);	1613	ev_start (EV_A_ (W)w, 1);
1392	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1614	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1393	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1615	wlist_add (&anfds[fd].head, (WL)w);
1394		1616
1395	fd_change (EV_A_ fd);	1617	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1618	w->events &= ~EV_IOFDSET;
1396	}	1619	}
1397		1620
1398	void	1621	void noinline
1399	ev_io_stop (EV_P_ struct ev_io *w)	1622	ev_io_stop (EV_P_ ev_io *w)
1400	{	1623	{
1401	ev_clear_pending (EV_A_ (W)w);	1624	clear_pending (EV_A_ (W)w);
1402	if (expect_false (!ev_is_active (w)))	1625	if (expect_false (!ev_is_active (w)))
1403	return;	1626	return;
1404		1627
1405	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1628	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1406		1629
1407	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1630	wlist_del (&anfds[w->fd].head, (WL)w);
1408	ev_stop (EV_A_ (W)w);	1631	ev_stop (EV_A_ (W)w);
1409		1632
1410	fd_change (EV_A_ w->fd);	1633	fd_change (EV_A_ w->fd, 1);
1411	}	1634	}
1412		1635
1413	void	1636	void noinline
1414	ev_timer_start (EV_P_ struct ev_timer *w)	1637	ev_timer_start (EV_P_ ev_timer *w)
1415	{	1638	{
1416	if (expect_false (ev_is_active (w)))	1639	if (expect_false (ev_is_active (w)))
1417	return;	1640	return;
1418		1641
1419	((WT)w)->at += mn_now;	1642	((WT)w)->at += mn_now;
1420		1643
1421	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1644	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1422		1645
1423	ev_start (EV_A_ (W)w, ++timercnt);	1646	ev_start (EV_A_ (W)w, ++timercnt);
1424	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);	1647	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1425	timers [timercnt - 1] = w;	1648	timers [timercnt - 1] = (WT)w;
1426	upheap ((WT *)timers, timercnt - 1);	1649	upheap (timers, timercnt - 1);
1427		1650
1428	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1651	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1429	}	1652	}
1430		1653
1431	void	1654	void noinline
1432	ev_timer_stop (EV_P_ struct ev_timer *w)	1655	ev_timer_stop (EV_P_ ev_timer *w)
1433	{	1656	{
1434	ev_clear_pending (EV_A_ (W)w);	1657	clear_pending (EV_A_ (W)w);
1435	if (expect_false (!ev_is_active (w)))	1658	if (expect_false (!ev_is_active (w)))
1436	return;	1659	return;
1437		1660
1438	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1661	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1439		1662
		1663	{
		1664	int active = ((W)w)->active;
		1665
1440	if (expect_true (((W)w)->active < timercnt--))	1666	if (expect_true (--active < --timercnt))
1441	{	1667	{
1442	timers [((W)w)->active - 1] = timers [timercnt];	1668	timers [active] = timers [timercnt];
1443	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1669	adjustheap (timers, timercnt, active);
1444	}	1670	}
		1671	}
1445		1672
1446	((WT)w)->at -= mn_now;	1673	((WT)w)->at -= mn_now;
1447		1674
1448	ev_stop (EV_A_ (W)w);	1675	ev_stop (EV_A_ (W)w);
1449	}	1676	}
1450		1677
1451	void	1678	void noinline
1452	ev_timer_again (EV_P_ struct ev_timer *w)	1679	ev_timer_again (EV_P_ ev_timer *w)
1453	{	1680	{
1454	if (ev_is_active (w))	1681	if (ev_is_active (w))
1455	{	1682	{
1456	if (w->repeat)	1683	if (w->repeat)
1457	{	1684	{
1458	((WT)w)->at = mn_now + w->repeat;	1685	((WT)w)->at = mn_now + w->repeat;
1459	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1686	adjustheap (timers, timercnt, ((W)w)->active - 1);
1460	}	1687	}
1461	else	1688	else
1462	ev_timer_stop (EV_A_ w);	1689	ev_timer_stop (EV_A_ w);
1463	}	1690	}
1464	else if (w->repeat)	1691	else if (w->repeat)
…		…
1466	w->at = w->repeat;	1693	w->at = w->repeat;
1467	ev_timer_start (EV_A_ w);	1694	ev_timer_start (EV_A_ w);
1468	}	1695	}
1469	}	1696	}
1470		1697
1471	#if EV_PERIODICS	1698	#if EV_PERIODIC_ENABLE
1472	void	1699	void noinline
1473	ev_periodic_start (EV_P_ struct ev_periodic *w)	1700	ev_periodic_start (EV_P_ ev_periodic *w)
1474	{	1701	{
1475	if (expect_false (ev_is_active (w)))	1702	if (expect_false (ev_is_active (w)))
1476	return;	1703	return;
1477		1704
1478	if (w->reschedule_cb)	1705	if (w->reschedule_cb)
1479	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1706	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1480	else if (w->interval)	1707	else if (w->interval)
1481	{	1708	{
1482	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1709	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1483	/* this formula differs from the one in periodic_reify because we do not always round up */	1710	/* this formula differs from the one in periodic_reify because we do not always round up */
1484	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1711	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1485	}	1712	}
		1713	else
		1714	((WT)w)->at = w->offset;
1486		1715
1487	ev_start (EV_A_ (W)w, ++periodiccnt);	1716	ev_start (EV_A_ (W)w, ++periodiccnt);
1488	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1717	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1489	periodics [periodiccnt - 1] = w;	1718	periodics [periodiccnt - 1] = (WT)w;
1490	upheap ((WT *)periodics, periodiccnt - 1);	1719	upheap (periodics, periodiccnt - 1);
1491		1720
1492	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1721	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1493	}	1722	}
1494		1723
1495	void	1724	void noinline
1496	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1725	ev_periodic_stop (EV_P_ ev_periodic *w)
1497	{	1726	{
1498	ev_clear_pending (EV_A_ (W)w);	1727	clear_pending (EV_A_ (W)w);
1499	if (expect_false (!ev_is_active (w)))	1728	if (expect_false (!ev_is_active (w)))
1500	return;	1729	return;
1501		1730
1502	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1731	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1503		1732
		1733	{
		1734	int active = ((W)w)->active;
		1735
1504	if (expect_true (((W)w)->active < periodiccnt--))	1736	if (expect_true (--active < --periodiccnt))
1505	{	1737	{
1506	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1738	periodics [active] = periodics [periodiccnt];
1507	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1739	adjustheap (periodics, periodiccnt, active);
1508	}	1740	}
		1741	}
1509		1742
1510	ev_stop (EV_A_ (W)w);	1743	ev_stop (EV_A_ (W)w);
1511	}	1744	}
1512		1745
1513	void	1746	void noinline
1514	ev_periodic_again (EV_P_ struct ev_periodic *w)	1747	ev_periodic_again (EV_P_ ev_periodic *w)
1515	{	1748	{
1516	/* TODO: use adjustheap and recalculation */	1749	/* TODO: use adjustheap and recalculation */
1517	ev_periodic_stop (EV_A_ w);	1750	ev_periodic_stop (EV_A_ w);
1518	ev_periodic_start (EV_A_ w);	1751	ev_periodic_start (EV_A_ w);
1519	}	1752	}
1520	#endif	1753	#endif
1521		1754
1522	void
1523	ev_idle_start (EV_P_ struct ev_idle *w)
1524	{
1525	if (expect_false (ev_is_active (w)))
1526	return;
1527
1528	ev_start (EV_A_ (W)w, ++idlecnt);
1529	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1530	idles [idlecnt - 1] = w;
1531	}
1532
1533	void
1534	ev_idle_stop (EV_P_ struct ev_idle *w)
1535	{
1536	ev_clear_pending (EV_A_ (W)w);
1537	if (expect_false (!ev_is_active (w)))
1538	return;
1539
1540	idles [((W)w)->active - 1] = idles [--idlecnt];
1541	ev_stop (EV_A_ (W)w);
1542	}
1543
1544	void
1545	ev_prepare_start (EV_P_ struct ev_prepare *w)
1546	{
1547	if (expect_false (ev_is_active (w)))
1548	return;
1549
1550	ev_start (EV_A_ (W)w, ++preparecnt);
1551	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1552	prepares [preparecnt - 1] = w;
1553	}
1554
1555	void
1556	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1557	{
1558	ev_clear_pending (EV_A_ (W)w);
1559	if (expect_false (!ev_is_active (w)))
1560	return;
1561
1562	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1563	ev_stop (EV_A_ (W)w);
1564	}
1565
1566	void
1567	ev_check_start (EV_P_ struct ev_check *w)
1568	{
1569	if (expect_false (ev_is_active (w)))
1570	return;
1571
1572	ev_start (EV_A_ (W)w, ++checkcnt);
1573	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1574	checks [checkcnt - 1] = w;
1575	}
1576
1577	void
1578	ev_check_stop (EV_P_ struct ev_check *w)
1579	{
1580	ev_clear_pending (EV_A_ (W)w);
1581	if (expect_false (!ev_is_active (w)))
1582	return;
1583
1584	checks [((W)w)->active - 1] = checks [--checkcnt];
1585	ev_stop (EV_A_ (W)w);
1586	}
1587
1588	#ifndef SA_RESTART	1755	#ifndef SA_RESTART
1589	# define SA_RESTART 0	1756	# define SA_RESTART 0
1590	#endif	1757	#endif
1591		1758
1592	void	1759	void noinline
1593	ev_signal_start (EV_P_ struct ev_signal *w)	1760	ev_signal_start (EV_P_ ev_signal *w)
1594	{	1761	{
1595	#if EV_MULTIPLICITY	1762	#if EV_MULTIPLICITY
1596	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1763	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1597	#endif	1764	#endif
1598	if (expect_false (ev_is_active (w)))	1765	if (expect_false (ev_is_active (w)))
1599	return;	1766	return;
1600		1767
1601	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1768	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1602		1769
		1770	{
		1771	#ifndef _WIN32
		1772	sigset_t full, prev;
		1773	sigfillset (&full);
		1774	sigprocmask (SIG_SETMASK, &full, &prev);
		1775	#endif
		1776
		1777	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1778
		1779	#ifndef _WIN32
		1780	sigprocmask (SIG_SETMASK, &prev, 0);
		1781	#endif
		1782	}
		1783
1603	ev_start (EV_A_ (W)w, 1);	1784	ev_start (EV_A_ (W)w, 1);
1604	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1605	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1785	wlist_add (&signals [w->signum - 1].head, (WL)w);
1606		1786
1607	if (!((WL)w)->next)	1787	if (!((WL)w)->next)
1608	{	1788	{
1609	#if _WIN32	1789	#if _WIN32
1610	signal (w->signum, sighandler);	1790	signal (w->signum, sighandler);
…		…
1616	sigaction (w->signum, &sa, 0);	1796	sigaction (w->signum, &sa, 0);
1617	#endif	1797	#endif
1618	}	1798	}
1619	}	1799	}
1620		1800
1621	void	1801	void noinline
1622	ev_signal_stop (EV_P_ struct ev_signal *w)	1802	ev_signal_stop (EV_P_ ev_signal *w)
1623	{	1803	{
1624	ev_clear_pending (EV_A_ (W)w);	1804	clear_pending (EV_A_ (W)w);
1625	if (expect_false (!ev_is_active (w)))	1805	if (expect_false (!ev_is_active (w)))
1626	return;	1806	return;
1627		1807
1628	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1808	wlist_del (&signals [w->signum - 1].head, (WL)w);
1629	ev_stop (EV_A_ (W)w);	1809	ev_stop (EV_A_ (W)w);
1630		1810
1631	if (!signals [w->signum - 1].head)	1811	if (!signals [w->signum - 1].head)
1632	signal (w->signum, SIG_DFL);	1812	signal (w->signum, SIG_DFL);
1633	}	1813	}
1634		1814
1635	void	1815	void
1636	ev_child_start (EV_P_ struct ev_child *w)	1816	ev_child_start (EV_P_ ev_child *w)
1637	{	1817	{
1638	#if EV_MULTIPLICITY	1818	#if EV_MULTIPLICITY
1639	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1819	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1640	#endif	1820	#endif
1641	if (expect_false (ev_is_active (w)))	1821	if (expect_false (ev_is_active (w)))
1642	return;	1822	return;
1643		1823
1644	ev_start (EV_A_ (W)w, 1);	1824	ev_start (EV_A_ (W)w, 1);
1645	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1825	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1646	}	1826	}
1647		1827
1648	void	1828	void
1649	ev_child_stop (EV_P_ struct ev_child *w)	1829	ev_child_stop (EV_P_ ev_child *w)
1650	{	1830	{
1651	ev_clear_pending (EV_A_ (W)w);	1831	clear_pending (EV_A_ (W)w);
1652	if (expect_false (!ev_is_active (w)))	1832	if (expect_false (!ev_is_active (w)))
1653	return;	1833	return;
1654		1834
1655	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1835	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1656	ev_stop (EV_A_ (W)w);	1836	ev_stop (EV_A_ (W)w);
1657	}	1837	}
1658		1838
		1839	#if EV_STAT_ENABLE
		1840
		1841	# ifdef _WIN32
		1842	# undef lstat
		1843	# define lstat(a,b) _stati64 (a,b)
		1844	# endif
		1845
		1846	#define DEF_STAT_INTERVAL 5.0074891
		1847	#define MIN_STAT_INTERVAL 0.1074891
		1848
		1849	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1850
		1851	#if EV_USE_INOTIFY
		1852	# define EV_INOTIFY_BUFSIZE 8192
		1853
		1854	static void noinline
		1855	infy_add (EV_P_ ev_stat *w)
		1856	{
		1857	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
		1858
		1859	if (w->wd < 0)
		1860	{
		1861	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1862
		1863	/* monitor some parent directory for speedup hints */
		1864	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1865	{
		1866	char path [4096];
		1867	strcpy (path, w->path);
		1868
		1869	do
		1870	{
		1871	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1872	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1873
		1874	char *pend = strrchr (path, '/');
		1875
		1876	if (!pend)
		1877	break; /* whoops, no '/', complain to your admin */
		1878
		1879	*pend = 0;
		1880	w->wd = inotify_add_watch (fs_fd, path, mask);
		1881	}
		1882	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1883	}
		1884	}
		1885	else
		1886	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1887
		1888	if (w->wd >= 0)
		1889	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1890	}
		1891
		1892	static void noinline
		1893	infy_del (EV_P_ ev_stat *w)
		1894	{
		1895	int slot;
		1896	int wd = w->wd;
		1897
		1898	if (wd < 0)
		1899	return;
		1900
		1901	w->wd = -2;
		1902	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1903	wlist_del (&fs_hash [slot].head, (WL)w);
		1904
		1905	/* remove this watcher, if others are watching it, they will rearm */
		1906	inotify_rm_watch (fs_fd, wd);
		1907	}
		1908
		1909	static void noinline
		1910	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1911	{
		1912	if (slot < 0)
		1913	/* overflow, need to check for all hahs slots */
		1914	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1915	infy_wd (EV_A_ slot, wd, ev);
		1916	else
		1917	{
		1918	WL w_;
		1919
		1920	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1921	{
		1922	ev_stat *w = (ev_stat *)w_;
		1923	w_ = w_->next; /* lets us remove this watcher and all before it */
		1924
		1925	if (w->wd == wd || wd == -1)
		1926	{
		1927	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1928	{
		1929	w->wd = -1;
		1930	infy_add (EV_A_ w); /* re-add, no matter what */
		1931	}
		1932
		1933	stat_timer_cb (EV_A_ &w->timer, 0);
		1934	}
		1935	}
		1936	}
		1937	}
		1938
		1939	static void
		1940	infy_cb (EV_P_ ev_io *w, int revents)
		1941	{
		1942	char buf [EV_INOTIFY_BUFSIZE];
		1943	struct inotify_event *ev = (struct inotify_event *)buf;
		1944	int ofs;
		1945	int len = read (fs_fd, buf, sizeof (buf));
		1946
		1947	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1948	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1949	}
		1950
		1951	void inline_size
		1952	infy_init (EV_P)
		1953	{
		1954	if (fs_fd != -2)
		1955	return;
		1956
		1957	fs_fd = inotify_init ();
		1958
		1959	if (fs_fd >= 0)
		1960	{
		1961	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1962	ev_set_priority (&fs_w, EV_MAXPRI);
		1963	ev_io_start (EV_A_ &fs_w);
		1964	}
		1965	}
		1966
		1967	void inline_size
		1968	infy_fork (EV_P)
		1969	{
		1970	int slot;
		1971
		1972	if (fs_fd < 0)
		1973	return;
		1974
		1975	close (fs_fd);
		1976	fs_fd = inotify_init ();
		1977
		1978	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1979	{
		1980	WL w_ = fs_hash [slot].head;
		1981	fs_hash [slot].head = 0;
		1982
		1983	while (w_)
		1984	{
		1985	ev_stat *w = (ev_stat *)w_;
		1986	w_ = w_->next; /* lets us add this watcher */
		1987
		1988	w->wd = -1;
		1989
		1990	if (fs_fd >= 0)
		1991	infy_add (EV_A_ w); /* re-add, no matter what */
		1992	else
		1993	ev_timer_start (EV_A_ &w->timer);
		1994	}
		1995
		1996	}
		1997	}
		1998
		1999	#endif
		2000
		2001	void
		2002	ev_stat_stat (EV_P_ ev_stat *w)
		2003	{
		2004	if (lstat (w->path, &w->attr) < 0)
		2005	w->attr.st_nlink = 0;
		2006	else if (!w->attr.st_nlink)
		2007	w->attr.st_nlink = 1;
		2008	}
		2009
		2010	static void noinline
		2011	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2012	{
		2013	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2014
		2015	/* we copy this here each the time so that */
		2016	/* prev has the old value when the callback gets invoked */
		2017	w->prev = w->attr;
		2018	ev_stat_stat (EV_A_ w);
		2019
		2020	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2021	if (
		2022	w->prev.st_dev != w->attr.st_dev
		2023	|| w->prev.st_ino != w->attr.st_ino
		2024	|| w->prev.st_mode != w->attr.st_mode
		2025	|| w->prev.st_nlink != w->attr.st_nlink
		2026	|| w->prev.st_uid != w->attr.st_uid
		2027	|| w->prev.st_gid != w->attr.st_gid
		2028	|| w->prev.st_rdev != w->attr.st_rdev
		2029	|| w->prev.st_size != w->attr.st_size
		2030	|| w->prev.st_atime != w->attr.st_atime
		2031	|| w->prev.st_mtime != w->attr.st_mtime
		2032	|| w->prev.st_ctime != w->attr.st_ctime
		2033	) {
		2034	#if EV_USE_INOTIFY
		2035	infy_del (EV_A_ w);
		2036	infy_add (EV_A_ w);
		2037	ev_stat_stat (EV_A_ w); /* avoid race... */
		2038	#endif
		2039
		2040	ev_feed_event (EV_A_ w, EV_STAT);
		2041	}
		2042	}
		2043
		2044	void
		2045	ev_stat_start (EV_P_ ev_stat *w)
		2046	{
		2047	if (expect_false (ev_is_active (w)))
		2048	return;
		2049
		2050	/* since we use memcmp, we need to clear any padding data etc. */
		2051	memset (&w->prev, 0, sizeof (ev_statdata));
		2052	memset (&w->attr, 0, sizeof (ev_statdata));
		2053
		2054	ev_stat_stat (EV_A_ w);
		2055
		2056	if (w->interval < MIN_STAT_INTERVAL)
		2057	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2058
		2059	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2060	ev_set_priority (&w->timer, ev_priority (w));
		2061
		2062	#if EV_USE_INOTIFY
		2063	infy_init (EV_A);
		2064
		2065	if (fs_fd >= 0)
		2066	infy_add (EV_A_ w);
		2067	else
		2068	#endif
		2069	ev_timer_start (EV_A_ &w->timer);
		2070
		2071	ev_start (EV_A_ (W)w, 1);
		2072	}
		2073
		2074	void
		2075	ev_stat_stop (EV_P_ ev_stat *w)
		2076	{
		2077	clear_pending (EV_A_ (W)w);
		2078	if (expect_false (!ev_is_active (w)))
		2079	return;
		2080
		2081	#if EV_USE_INOTIFY
		2082	infy_del (EV_A_ w);
		2083	#endif
		2084	ev_timer_stop (EV_A_ &w->timer);
		2085
		2086	ev_stop (EV_A_ (W)w);
		2087	}
		2088	#endif
		2089
		2090	#if EV_IDLE_ENABLE
		2091	void
		2092	ev_idle_start (EV_P_ ev_idle *w)
		2093	{
		2094	if (expect_false (ev_is_active (w)))
		2095	return;
		2096
		2097	pri_adjust (EV_A_ (W)w);
		2098
		2099	{
		2100	int active = ++idlecnt [ABSPRI (w)];
		2101
		2102	++idleall;
		2103	ev_start (EV_A_ (W)w, active);
		2104
		2105	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2106	idles [ABSPRI (w)][active - 1] = w;
		2107	}
		2108	}
		2109
		2110	void
		2111	ev_idle_stop (EV_P_ ev_idle *w)
		2112	{
		2113	clear_pending (EV_A_ (W)w);
		2114	if (expect_false (!ev_is_active (w)))
		2115	return;
		2116
		2117	{
		2118	int active = ((W)w)->active;
		2119
		2120	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2121	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2122
		2123	ev_stop (EV_A_ (W)w);
		2124	--idleall;
		2125	}
		2126	}
		2127	#endif
		2128
		2129	void
		2130	ev_prepare_start (EV_P_ ev_prepare *w)
		2131	{
		2132	if (expect_false (ev_is_active (w)))
		2133	return;
		2134
		2135	ev_start (EV_A_ (W)w, ++preparecnt);
		2136	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2137	prepares [preparecnt - 1] = w;
		2138	}
		2139
		2140	void
		2141	ev_prepare_stop (EV_P_ ev_prepare *w)
		2142	{
		2143	clear_pending (EV_A_ (W)w);
		2144	if (expect_false (!ev_is_active (w)))
		2145	return;
		2146
		2147	{
		2148	int active = ((W)w)->active;
		2149	prepares [active - 1] = prepares [--preparecnt];
		2150	((W)prepares [active - 1])->active = active;
		2151	}
		2152
		2153	ev_stop (EV_A_ (W)w);
		2154	}
		2155
		2156	void
		2157	ev_check_start (EV_P_ ev_check *w)
		2158	{
		2159	if (expect_false (ev_is_active (w)))
		2160	return;
		2161
		2162	ev_start (EV_A_ (W)w, ++checkcnt);
		2163	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2164	checks [checkcnt - 1] = w;
		2165	}
		2166
		2167	void
		2168	ev_check_stop (EV_P_ ev_check *w)
		2169	{
		2170	clear_pending (EV_A_ (W)w);
		2171	if (expect_false (!ev_is_active (w)))
		2172	return;
		2173
		2174	{
		2175	int active = ((W)w)->active;
		2176	checks [active - 1] = checks [--checkcnt];
		2177	((W)checks [active - 1])->active = active;
		2178	}
		2179
		2180	ev_stop (EV_A_ (W)w);
		2181	}
		2182
		2183	#if EV_EMBED_ENABLE
		2184	void noinline
		2185	ev_embed_sweep (EV_P_ ev_embed *w)
		2186	{
		2187	ev_loop (w->other, EVLOOP_NONBLOCK);
		2188	}
		2189
		2190	static void
		2191	embed_cb (EV_P_ ev_io *io, int revents)
		2192	{
		2193	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2194
		2195	if (ev_cb (w))
		2196	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2197	else
		2198	ev_embed_sweep (loop, w);
		2199	}
		2200
		2201	void
		2202	ev_embed_start (EV_P_ ev_embed *w)
		2203	{
		2204	if (expect_false (ev_is_active (w)))
		2205	return;
		2206
		2207	{
		2208	struct ev_loop *loop = w->other;
		2209	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2210	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2211	}
		2212
		2213	ev_set_priority (&w->io, ev_priority (w));
		2214	ev_io_start (EV_A_ &w->io);
		2215
		2216	ev_start (EV_A_ (W)w, 1);
		2217	}
		2218
		2219	void
		2220	ev_embed_stop (EV_P_ ev_embed *w)
		2221	{
		2222	clear_pending (EV_A_ (W)w);
		2223	if (expect_false (!ev_is_active (w)))
		2224	return;
		2225
		2226	ev_io_stop (EV_A_ &w->io);
		2227
		2228	ev_stop (EV_A_ (W)w);
		2229	}
		2230	#endif
		2231
		2232	#if EV_FORK_ENABLE
		2233	void
		2234	ev_fork_start (EV_P_ ev_fork *w)
		2235	{
		2236	if (expect_false (ev_is_active (w)))
		2237	return;
		2238
		2239	ev_start (EV_A_ (W)w, ++forkcnt);
		2240	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2241	forks [forkcnt - 1] = w;
		2242	}
		2243
		2244	void
		2245	ev_fork_stop (EV_P_ ev_fork *w)
		2246	{
		2247	clear_pending (EV_A_ (W)w);
		2248	if (expect_false (!ev_is_active (w)))
		2249	return;
		2250
		2251	{
		2252	int active = ((W)w)->active;
		2253	forks [active - 1] = forks [--forkcnt];
		2254	((W)forks [active - 1])->active = active;
		2255	}
		2256
		2257	ev_stop (EV_A_ (W)w);
		2258	}
		2259	#endif
		2260
1659	/*****************************************************************************/	2261	/*****************************************************************************/
1660		2262
1661	struct ev_once	2263	struct ev_once
1662	{	2264	{
1663	struct ev_io io;	2265	ev_io io;
1664	struct ev_timer to;	2266	ev_timer to;
1665	void (*cb)(int revents, void *arg);	2267	void (*cb)(int revents, void *arg);
1666	void *arg;	2268	void *arg;
1667	};	2269	};
1668		2270
1669	static void	2271	static void
…		…
1678		2280
1679	cb (revents, arg);	2281	cb (revents, arg);
1680	}	2282	}
1681		2283
1682	static void	2284	static void
1683	once_cb_io (EV_P_ struct ev_io *w, int revents)	2285	once_cb_io (EV_P_ ev_io *w, int revents)
1684	{	2286	{
1685	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2287	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1686	}	2288	}
1687		2289
1688	static void	2290	static void
1689	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2291	once_cb_to (EV_P_ ev_timer *w, int revents)
1690	{	2292	{
1691	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2293	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1692	}	2294	}
1693		2295
1694	void	2296	void
…		…
1718	ev_timer_set (&once->to, timeout, 0.);	2320	ev_timer_set (&once->to, timeout, 0.);
1719	ev_timer_start (EV_A_ &once->to);	2321	ev_timer_start (EV_A_ &once->to);
1720	}	2322	}
1721	}	2323	}
1722		2324
		2325	#if EV_MULTIPLICITY
		2326	#include "ev_wrap.h"
		2327	#endif
		2328
1723	#ifdef __cplusplus	2329	#ifdef __cplusplus
1724	}	2330	}
1725	#endif	2331	#endif
1726		2332

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