ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.132 by root, Fri Nov 23 10:36:30 2007 UTC vs.
Revision 1.180 by root, Tue Dec 11 22:04:55 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
…		…
168		206
169	#if EV_SELECT_IS_WINSOCKET	207	#if EV_SELECT_IS_WINSOCKET
170	# include <winsock.h>	208	# include <winsock.h>
171	#endif	209	#endif
172		210
		211	#if !EV_STAT_ENABLE
		212	# define EV_USE_INOTIFY 0
		213	#endif
		214
		215	#if EV_USE_INOTIFY
		216	# include <sys/inotify.h>
		217	#endif
		218
173	/**/	219	/**/
		220
		221	/*
		222	* This is used to avoid floating point rounding problems.
		223	* It is added to ev_rt_now when scheduling periodics
		224	* to ensure progress, time-wise, even when rounding
		225	* errors are against us.
		226	* This value is good at least till the year 4000.
		227	* Better solutions welcome.
		228	*/
		229	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
174		230
175	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	231	#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) */	232	#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 */	233	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
179
180	#ifdef EV_H
181	# include EV_H
182	#else
183	# include "ev.h"
184	#endif
185		234
186	#if __GNUC__ >= 3	235	#if __GNUC__ >= 3
187	# define expect(expr,value) __builtin_expect ((expr),(value))	236	# define expect(expr,value) __builtin_expect ((expr),(value))
188	# define inline static inline	237	# define noinline __attribute__ ((noinline))
189	#else	238	#else
190	# define expect(expr,value) (expr)	239	# define expect(expr,value) (expr)
191	# define inline static	240	# define noinline
		241	# if __STDC_VERSION__ < 199901L
		242	# define inline
		243	# endif
192	#endif	244	#endif
193		245
194	#define expect_false(expr) expect ((expr) != 0, 0)	246	#define expect_false(expr) expect ((expr) != 0, 0)
195	#define expect_true(expr) expect ((expr) != 0, 1)	247	#define expect_true(expr) expect ((expr) != 0, 1)
		248	#define inline_size static inline
		249
		250	#if EV_MINIMAL
		251	# define inline_speed static noinline
		252	#else
		253	# define inline_speed static inline
		254	#endif
196		255
197	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	256	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
198	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	257	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
199		258
200	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	259	#define EMPTY /* required for microsofts broken pseudo-c compiler */
201	#define EMPTY2(a,b) /* used to suppress some warnings */	260	#define EMPTY2(a,b) /* used to suppress some warnings */
202		261
203	typedef struct ev_watcher *W;	262	typedef ev_watcher *W;
204	typedef struct ev_watcher_list *WL;	263	typedef ev_watcher_list *WL;
205	typedef struct ev_watcher_time *WT;	264	typedef ev_watcher_time *WT;
206		265
207	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	266	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
208		267
209	#ifdef _WIN32	268	#ifdef _WIN32
210	# include "ev_win32.c"	269	# include "ev_win32.c"
…		…
212		271
213	/*****************************************************************************/	272	/*****************************************************************************/
214		273
215	static void (*syserr_cb)(const char *msg);	274	static void (*syserr_cb)(const char *msg);
216		275
		276	void
217	void ev_set_syserr_cb (void (*cb)(const char *msg))	277	ev_set_syserr_cb (void (*cb)(const char *msg))
218	{	278	{
219	syserr_cb = cb;	279	syserr_cb = cb;
220	}	280	}
221		281
222	static void	282	static void noinline
223	syserr (const char *msg)	283	syserr (const char *msg)
224	{	284	{
225	if (!msg)	285	if (!msg)
226	msg = "(libev) system error";	286	msg = "(libev) system error";
227		287
…		…
234	}	294	}
235	}	295	}
236		296
237	static void *(*alloc)(void *ptr, long size);	297	static void *(*alloc)(void *ptr, long size);
238		298
		299	void
239	void ev_set_allocator (void *(*cb)(void *ptr, long size))	300	ev_set_allocator (void *(*cb)(void *ptr, long size))
240	{	301	{
241	alloc = cb;	302	alloc = cb;
242	}	303	}
243		304
244	static void *	305	inline_speed void *
245	ev_realloc (void *ptr, long size)	306	ev_realloc (void *ptr, long size)
246	{	307	{
247	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
248		309
249	if (!ptr && size)	310	if (!ptr && size)
…		…
273	typedef struct	334	typedef struct
274	{	335	{
275	W w;	336	W w;
276	int events;	337	int events;
277	} ANPENDING;	338	} ANPENDING;
		339
		340	#if EV_USE_INOTIFY
		341	typedef struct
		342	{
		343	WL head;
		344	} ANFS;
		345	#endif
278		346
279	#if EV_MULTIPLICITY	347	#if EV_MULTIPLICITY
280		348
281	struct ev_loop	349	struct ev_loop
282	{	350	{
…		…
316	gettimeofday (&tv, 0);	384	gettimeofday (&tv, 0);
317	return tv.tv_sec + tv.tv_usec * 1e-6;	385	return tv.tv_sec + tv.tv_usec * 1e-6;
318	#endif	386	#endif
319	}	387	}
320		388
321	inline ev_tstamp	389	ev_tstamp inline_size
322	get_clock (void)	390	get_clock (void)
323	{	391	{
324	#if EV_USE_MONOTONIC	392	#if EV_USE_MONOTONIC
325	if (expect_true (have_monotonic))	393	if (expect_true (have_monotonic))
326	{	394	{
…		…
339	{	407	{
340	return ev_rt_now;	408	return ev_rt_now;
341	}	409	}
342	#endif	410	#endif
343		411
344	#define array_roundsize(type,n) (((n) | 4) & ~3)	412	int inline_size
		413	array_nextsize (int elem, int cur, int cnt)
		414	{
		415	int ncur = cur + 1;
		416
		417	do
		418	ncur <<= 1;
		419	while (cnt > ncur);
		420
		421	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		422	if (elem * ncur > 4096)
		423	{
		424	ncur *= elem;
		425	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		426	ncur = ncur - sizeof (void *) * 4;
		427	ncur /= elem;
		428	}
		429
		430	return ncur;
		431	}
		432
		433	static noinline void *
		434	array_realloc (int elem, void *base, int *cur, int cnt)
		435	{
		436	*cur = array_nextsize (elem, *cur, cnt);
		437	return ev_realloc (base, elem * *cur);
		438	}
345		439
346	#define array_needsize(type,base,cur,cnt,init) \	440	#define array_needsize(type,base,cur,cnt,init) \
347	if (expect_false ((cnt) > cur)) \	441	if (expect_false ((cnt) > (cur))) \
348	{ \	442	{ \
349	int newcnt = cur; \	443	int ocur_ = (cur); \
350	do \	444	(base) = (type *)array_realloc \
351	{ \	445	(sizeof (type), (base), &(cur), (cnt)); \
352	newcnt = array_roundsize (type, newcnt << 1); \	446	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	}	447	}
360		448
		449	#if 0
361	#define array_slim(type,stem) \	450	#define array_slim(type,stem) \
362	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	451	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
363	{ \	452	{ \
364	stem ## max = array_roundsize (stem ## cnt >> 1); \	453	stem ## max = array_roundsize (stem ## cnt >> 1); \
365	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	454	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
366	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	455	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
367	}	456	}
		457	#endif
368		458
369	#define array_free(stem, idx) \	459	#define array_free(stem, idx) \
370	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	460	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
371		461
372	/*****************************************************************************/	462	/*****************************************************************************/
373		463
374	static void	464	void noinline
		465	ev_feed_event (EV_P_ void *w, int revents)
		466	{
		467	W w_ = (W)w;
		468	int pri = ABSPRI (w_);
		469
		470	if (expect_false (w_->pending))
		471	pendings [pri][w_->pending - 1].events |= revents;
		472	else
		473	{
		474	w_->pending = ++pendingcnt [pri];
		475	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		476	pendings [pri][w_->pending - 1].w = w_;
		477	pendings [pri][w_->pending - 1].events = revents;
		478	}
		479	}
		480
		481	void inline_speed
		482	queue_events (EV_P_ W *events, int eventcnt, int type)
		483	{
		484	int i;
		485
		486	for (i = 0; i < eventcnt; ++i)
		487	ev_feed_event (EV_A_ events [i], type);
		488	}
		489
		490	/*****************************************************************************/
		491
		492	void inline_size
375	anfds_init (ANFD *base, int count)	493	anfds_init (ANFD *base, int count)
376	{	494	{
377	while (count--)	495	while (count--)
378	{	496	{
379	base->head = 0;	497	base->head = 0;
…		…
382		500
383	++base;	501	++base;
384	}	502	}
385	}	503	}
386		504
387	void	505	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)	506	fd_event (EV_P_ int fd, int revents)
415	{	507	{
416	ANFD *anfd = anfds + fd;	508	ANFD *anfd = anfds + fd;
417	struct ev_io *w;	509	ev_io *w;
418		510
419	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	511	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
420	{	512	{
421	int ev = w->events & revents;	513	int ev = w->events & revents;
422		514
423	if (ev)	515	if (ev)
424	ev_feed_event (EV_A_ (W)w, ev);	516	ev_feed_event (EV_A_ (W)w, ev);
…		…
426	}	518	}
427		519
428	void	520	void
429	ev_feed_fd_event (EV_P_ int fd, int revents)	521	ev_feed_fd_event (EV_P_ int fd, int revents)
430	{	522	{
		523	if (fd >= 0 && fd < anfdmax)
431	fd_event (EV_A_ fd, revents);	524	fd_event (EV_A_ fd, revents);
432	}	525	}
433		526
434	/*****************************************************************************/	527	void inline_size
435
436	inline void
437	fd_reify (EV_P)	528	fd_reify (EV_P)
438	{	529	{
439	int i;	530	int i;
440		531
441	for (i = 0; i < fdchangecnt; ++i)	532	for (i = 0; i < fdchangecnt; ++i)
442	{	533	{
443	int fd = fdchanges [i];	534	int fd = fdchanges [i];
444	ANFD *anfd = anfds + fd;	535	ANFD *anfd = anfds + fd;
445	struct ev_io *w;	536	ev_io *w;
446		537
447	int events = 0;	538	int events = 0;
448		539
449	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	540	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
450	events |= w->events;	541	events |= w->events;
451		542
452	#if EV_SELECT_IS_WINSOCKET	543	#if EV_SELECT_IS_WINSOCKET
453	if (events)	544	if (events)
454	{	545	{
…		…
465	}	556	}
466		557
467	fdchangecnt = 0;	558	fdchangecnt = 0;
468	}	559	}
469		560
470	static void	561	void inline_size
471	fd_change (EV_P_ int fd)	562	fd_change (EV_P_ int fd)
472	{	563	{
473	if (expect_false (anfds [fd].reify))	564	if (expect_false (anfds [fd].reify))
474	return;	565	return;
475		566
…		…
478	++fdchangecnt;	569	++fdchangecnt;
479	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
480	fdchanges [fdchangecnt - 1] = fd;	571	fdchanges [fdchangecnt - 1] = fd;
481	}	572	}
482		573
483	static void	574	void inline_speed
484	fd_kill (EV_P_ int fd)	575	fd_kill (EV_P_ int fd)
485	{	576	{
486	struct ev_io *w;	577	ev_io *w;
487		578
488	while ((w = (struct ev_io *)anfds [fd].head))	579	while ((w = (ev_io *)anfds [fd].head))
489	{	580	{
490	ev_io_stop (EV_A_ w);	581	ev_io_stop (EV_A_ w);
491	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	582	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
492	}	583	}
493	}	584	}
494		585
495	inline int	586	int inline_size
496	fd_valid (int fd)	587	fd_valid (int fd)
497	{	588	{
498	#ifdef _WIN32	589	#ifdef _WIN32
499	return _get_osfhandle (fd) != -1;	590	return _get_osfhandle (fd) != -1;
500	#else	591	#else
501	return fcntl (fd, F_GETFD) != -1;	592	return fcntl (fd, F_GETFD) != -1;
502	#endif	593	#endif
503	}	594	}
504		595
505	/* called on EBADF to verify fds */	596	/* called on EBADF to verify fds */
506	static void	597	static void noinline
507	fd_ebadf (EV_P)	598	fd_ebadf (EV_P)
508	{	599	{
509	int fd;	600	int fd;
510		601
511	for (fd = 0; fd < anfdmax; ++fd)	602	for (fd = 0; fd < anfdmax; ++fd)
…		…
513	if (!fd_valid (fd) == -1 && errno == EBADF)	604	if (!fd_valid (fd) == -1 && errno == EBADF)
514	fd_kill (EV_A_ fd);	605	fd_kill (EV_A_ fd);
515	}	606	}
516		607
517	/* called on ENOMEM in select/poll to kill some fds and retry */	608	/* called on ENOMEM in select/poll to kill some fds and retry */
518	static void	609	static void noinline
519	fd_enomem (EV_P)	610	fd_enomem (EV_P)
520	{	611	{
521	int fd;	612	int fd;
522		613
523	for (fd = anfdmax; fd--; )	614	for (fd = anfdmax; fd--; )
…		…
527	return;	618	return;
528	}	619	}
529	}	620	}
530		621
531	/* usually called after fork if backend needs to re-arm all fds from scratch */	622	/* usually called after fork if backend needs to re-arm all fds from scratch */
532	static void	623	static void noinline
533	fd_rearm_all (EV_P)	624	fd_rearm_all (EV_P)
534	{	625	{
535	int fd;	626	int fd;
536		627
537	/* this should be highly optimised to not do anything but set a flag */
538	for (fd = 0; fd < anfdmax; ++fd)	628	for (fd = 0; fd < anfdmax; ++fd)
539	if (anfds [fd].events)	629	if (anfds [fd].events)
540	{	630	{
541	anfds [fd].events = 0;	631	anfds [fd].events = 0;
542	fd_change (EV_A_ fd);	632	fd_change (EV_A_ fd);
543	}	633	}
544	}	634	}
545		635
546	/*****************************************************************************/	636	/*****************************************************************************/
547		637
548	static void	638	void inline_speed
549	upheap (WT *heap, int k)	639	upheap (WT *heap, int k)
550	{	640	{
551	WT w = heap [k];	641	WT w = heap [k];
552		642
553	while (k && heap [k >> 1]->at > w->at)	643	while (k)
554	{	644	{
		645	int p = (k - 1) >> 1;
		646
		647	if (heap [p]->at <= w->at)
		648	break;
		649
555	heap [k] = heap [k >> 1];	650	heap [k] = heap [p];
556	((W)heap [k])->active = k + 1;	651	((W)heap [k])->active = k + 1;
557	k >>= 1;	652	k = p;
558	}	653	}
559		654
560	heap [k] = w;	655	heap [k] = w;
561	((W)heap [k])->active = k + 1;	656	((W)heap [k])->active = k + 1;
562		657
563	}	658	}
564		659
565	static void	660	void inline_speed
566	downheap (WT *heap, int N, int k)	661	downheap (WT *heap, int N, int k)
567	{	662	{
568	WT w = heap [k];	663	WT w = heap [k];
569		664
570	while (k < (N >> 1))	665	for (;;)
571	{	666	{
572	int j = k << 1;	667	int c = (k << 1) + 1;
573		668
574	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	669	if (c >= N)
575	++j;
576
577	if (w->at <= heap [j]->at)
578	break;	670	break;
579		671
		672	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		673	? 1 : 0;
		674
		675	if (w->at <= heap [c]->at)
		676	break;
		677
580	heap [k] = heap [j];	678	heap [k] = heap [c];
581	((W)heap [k])->active = k + 1;	679	((W)heap [k])->active = k + 1;
		680
582	k = j;	681	k = c;
583	}	682	}
584		683
585	heap [k] = w;	684	heap [k] = w;
586	((W)heap [k])->active = k + 1;	685	((W)heap [k])->active = k + 1;
587	}	686	}
588		687
589	inline void	688	void inline_size
590	adjustheap (WT *heap, int N, int k)	689	adjustheap (WT *heap, int N, int k)
591	{	690	{
592	upheap (heap, k);	691	upheap (heap, k);
593	downheap (heap, N, k);	692	downheap (heap, N, k);
594	}	693	}
…		…
604	static ANSIG *signals;	703	static ANSIG *signals;
605	static int signalmax;	704	static int signalmax;
606		705
607	static int sigpipe [2];	706	static int sigpipe [2];
608	static sig_atomic_t volatile gotsig;	707	static sig_atomic_t volatile gotsig;
609	static struct ev_io sigev;	708	static ev_io sigev;
610		709
611	static void	710	void inline_size
612	signals_init (ANSIG *base, int count)	711	signals_init (ANSIG *base, int count)
613	{	712	{
614	while (count--)	713	while (count--)
615	{	714	{
616	base->head = 0;	715	base->head = 0;
…		…
636	write (sigpipe [1], &signum, 1);	735	write (sigpipe [1], &signum, 1);
637	errno = old_errno;	736	errno = old_errno;
638	}	737	}
639	}	738	}
640		739
641	void	740	void noinline
642	ev_feed_signal_event (EV_P_ int signum)	741	ev_feed_signal_event (EV_P_ int signum)
643	{	742	{
644	WL w;	743	WL w;
645		744
646	#if EV_MULTIPLICITY	745	#if EV_MULTIPLICITY
…		…
657	for (w = signals [signum].head; w; w = w->next)	756	for (w = signals [signum].head; w; w = w->next)
658	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	757	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
659	}	758	}
660		759
661	static void	760	static void
662	sigcb (EV_P_ struct ev_io *iow, int revents)	761	sigcb (EV_P_ ev_io *iow, int revents)
663	{	762	{
664	int signum;	763	int signum;
665		764
666	read (sigpipe [0], &revents, 1);	765	read (sigpipe [0], &revents, 1);
667	gotsig = 0;	766	gotsig = 0;
…		…
669	for (signum = signalmax; signum--; )	768	for (signum = signalmax; signum--; )
670	if (signals [signum].gotsig)	769	if (signals [signum].gotsig)
671	ev_feed_signal_event (EV_A_ signum + 1);	770	ev_feed_signal_event (EV_A_ signum + 1);
672	}	771	}
673		772
674	static void	773	void inline_speed
675	fd_intern (int fd)	774	fd_intern (int fd)
676	{	775	{
677	#ifdef _WIN32	776	#ifdef _WIN32
678	int arg = 1;	777	int arg = 1;
679	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	778	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
681	fcntl (fd, F_SETFD, FD_CLOEXEC);	780	fcntl (fd, F_SETFD, FD_CLOEXEC);
682	fcntl (fd, F_SETFL, O_NONBLOCK);	781	fcntl (fd, F_SETFL, O_NONBLOCK);
683	#endif	782	#endif
684	}	783	}
685		784
686	static void	785	static void noinline
687	siginit (EV_P)	786	siginit (EV_P)
688	{	787	{
689	fd_intern (sigpipe [0]);	788	fd_intern (sigpipe [0]);
690	fd_intern (sigpipe [1]);	789	fd_intern (sigpipe [1]);
691		790
…		…
694	ev_unref (EV_A); /* child watcher should not keep loop alive */	793	ev_unref (EV_A); /* child watcher should not keep loop alive */
695	}	794	}
696		795
697	/*****************************************************************************/	796	/*****************************************************************************/
698		797
699	static struct ev_child *childs [PID_HASHSIZE];	798	static ev_child *childs [EV_PID_HASHSIZE];
700		799
701	#ifndef _WIN32	800	#ifndef _WIN32
702		801
703	static struct ev_signal childev;	802	static ev_signal childev;
		803
		804	void inline_speed
		805	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		806	{
		807	ev_child *w;
		808
		809	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		810	if (w->pid == pid || !w->pid)
		811	{
		812	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		813	w->rpid = pid;
		814	w->rstatus = status;
		815	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		816	}
		817	}
704		818
705	#ifndef WCONTINUED	819	#ifndef WCONTINUED
706	# define WCONTINUED 0	820	# define WCONTINUED 0
707	#endif	821	#endif
708		822
709	static void	823	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)	824	childcb (EV_P_ ev_signal *sw, int revents)
726	{	825	{
727	int pid, status;	826	int pid, status;
728		827
		828	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
729	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	829	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
730	{	830	if (!WCONTINUED
		831	|| errno != EINVAL
		832	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		833	return;
		834
731	/* make sure we are called again until all childs have been reaped */	835	/* make sure we are called again until all childs have been reaped */
732	/* we need to do it this way so that the callback gets called before we continue */	836	/* we need to do it this way so that the callback gets called before we continue */
733	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	837	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
734		838
735	child_reap (EV_A_ sw, pid, pid, status);	839	child_reap (EV_A_ sw, pid, pid, status);
		840	if (EV_PID_HASHSIZE > 1)
736	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	841	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
737	}
738	}	842	}
739		843
740	#endif	844	#endif
741		845
742	/*****************************************************************************/	846	/*****************************************************************************/
…		…
768	{	872	{
769	return EV_VERSION_MINOR;	873	return EV_VERSION_MINOR;
770	}	874	}
771		875
772	/* return true if we are running with elevated privileges and should ignore env variables */	876	/* return true if we are running with elevated privileges and should ignore env variables */
773	static int	877	int inline_size
774	enable_secure (void)	878	enable_secure (void)
775	{	879	{
776	#ifdef _WIN32	880	#ifdef _WIN32
777	return 0;	881	return 0;
778	#else	882	#else
…		…
812		916
813	return flags;	917	return flags;
814	}	918	}
815		919
816	unsigned int	920	unsigned int
		921	ev_embeddable_backends (void)
		922	{
		923	return EVBACKEND_EPOLL
		924	| EVBACKEND_KQUEUE
		925	| EVBACKEND_PORT;
		926	}
		927
		928	unsigned int
817	ev_backend (EV_P)	929	ev_backend (EV_P)
818	{	930	{
819	return backend;	931	return backend;
820	}	932	}
821		933
822	static void	934	unsigned int
		935	ev_loop_count (EV_P)
		936	{
		937	return loop_count;
		938	}
		939
		940	static void noinline
823	loop_init (EV_P_ unsigned int flags)	941	loop_init (EV_P_ unsigned int flags)
824	{	942	{
825	if (!backend)	943	if (!backend)
826	{	944	{
827	#if EV_USE_MONOTONIC	945	#if EV_USE_MONOTONIC
…		…
835	ev_rt_now = ev_time ();	953	ev_rt_now = ev_time ();
836	mn_now = get_clock ();	954	mn_now = get_clock ();
837	now_floor = mn_now;	955	now_floor = mn_now;
838	rtmn_diff = ev_rt_now - mn_now;	956	rtmn_diff = ev_rt_now - mn_now;
839		957
		958	/* pid check not overridable via env */
		959	#ifndef _WIN32
		960	if (flags & EVFLAG_FORKCHECK)
		961	curpid = getpid ();
		962	#endif
		963
840	if (!(flags & EVFLAG_NOENV)	964	if (!(flags & EVFLAG_NOENV)
841	&& !enable_secure ()	965	&& !enable_secure ()
842	&& getenv ("LIBEV_FLAGS"))	966	&& getenv ("LIBEV_FLAGS"))
843	flags = atoi (getenv ("LIBEV_FLAGS"));	967	flags = atoi (getenv ("LIBEV_FLAGS"));
844		968
845	if (!(flags & 0x0000ffffUL))	969	if (!(flags & 0x0000ffffUL))
846	flags |= ev_recommended_backends ();	970	flags |= ev_recommended_backends ();
847		971
848	backend = 0;	972	backend = 0;
		973	backend_fd = -1;
		974	#if EV_USE_INOTIFY
		975	fs_fd = -2;
		976	#endif
		977
849	#if EV_USE_PORT	978	#if EV_USE_PORT
850	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	979	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
851	#endif	980	#endif
852	#if EV_USE_KQUEUE	981	#if EV_USE_KQUEUE
853	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	982	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
865	ev_init (&sigev, sigcb);	994	ev_init (&sigev, sigcb);
866	ev_set_priority (&sigev, EV_MAXPRI);	995	ev_set_priority (&sigev, EV_MAXPRI);
867	}	996	}
868	}	997	}
869		998
870	static void	999	static void noinline
871	loop_destroy (EV_P)	1000	loop_destroy (EV_P)
872	{	1001	{
873	int i;	1002	int i;
		1003
		1004	#if EV_USE_INOTIFY
		1005	if (fs_fd >= 0)
		1006	close (fs_fd);
		1007	#endif
		1008
		1009	if (backend_fd >= 0)
		1010	close (backend_fd);
874		1011
875	#if EV_USE_PORT	1012	#if EV_USE_PORT
876	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1013	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
877	#endif	1014	#endif
878	#if EV_USE_KQUEUE	1015	#if EV_USE_KQUEUE
…		…
887	#if EV_USE_SELECT	1024	#if EV_USE_SELECT
888	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1025	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
889	#endif	1026	#endif
890		1027
891	for (i = NUMPRI; i--; )	1028	for (i = NUMPRI; i--; )
		1029	{
892	array_free (pending, [i]);	1030	array_free (pending, [i]);
		1031	#if EV_IDLE_ENABLE
		1032	array_free (idle, [i]);
		1033	#endif
		1034	}
893		1035
894	/* have to use the microsoft-never-gets-it-right macro */	1036	/* have to use the microsoft-never-gets-it-right macro */
895	array_free (fdchange, EMPTY0);	1037	array_free (fdchange, EMPTY);
896	array_free (timer, EMPTY0);	1038	array_free (timer, EMPTY);
897	#if EV_PERIODICS	1039	#if EV_PERIODIC_ENABLE
898	array_free (periodic, EMPTY0);	1040	array_free (periodic, EMPTY);
899	#endif	1041	#endif
900	array_free (idle, EMPTY0);
901	array_free (prepare, EMPTY0);	1042	array_free (prepare, EMPTY);
902	array_free (check, EMPTY0);	1043	array_free (check, EMPTY);
903		1044
904	backend = 0;	1045	backend = 0;
905	}	1046	}
906		1047
907	static void	1048	void inline_size infy_fork (EV_P);
		1049
		1050	void inline_size
908	loop_fork (EV_P)	1051	loop_fork (EV_P)
909	{	1052	{
910	#if EV_USE_PORT	1053	#if EV_USE_PORT
911	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1054	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
912	#endif	1055	#endif
913	#if EV_USE_KQUEUE	1056	#if EV_USE_KQUEUE
914	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1057	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
915	#endif	1058	#endif
916	#if EV_USE_EPOLL	1059	#if EV_USE_EPOLL
917	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1060	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1061	#endif
		1062	#if EV_USE_INOTIFY
		1063	infy_fork (EV_A);
918	#endif	1064	#endif
919		1065
920	if (ev_is_active (&sigev))	1066	if (ev_is_active (&sigev))
921	{	1067	{
922	/* default loop */	1068	/* default loop */
…		…
1038	postfork = 1;	1184	postfork = 1;
1039	}	1185	}
1040		1186
1041	/*****************************************************************************/	1187	/*****************************************************************************/
1042		1188
1043	static int	1189	void
1044	any_pending (EV_P)	1190	ev_invoke (EV_P_ void *w, int revents)
1045	{	1191	{
1046	int pri;	1192	EV_CB_INVOKE ((W)w, revents);
1047
1048	for (pri = NUMPRI; pri--; )
1049	if (pendingcnt [pri])
1050	return 1;
1051
1052	return 0;
1053	}	1193	}
1054		1194
1055	inline void	1195	void inline_speed
1056	call_pending (EV_P)	1196	call_pending (EV_P)
1057	{	1197	{
1058	int pri;	1198	int pri;
1059		1199
1060	for (pri = NUMPRI; pri--; )	1200	for (pri = NUMPRI; pri--; )
…		…
1062	{	1202	{
1063	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1203	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1064		1204
1065	if (expect_true (p->w))	1205	if (expect_true (p->w))
1066	{	1206	{
		1207	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1208
1067	p->w->pending = 0;	1209	p->w->pending = 0;
1068	EV_CB_INVOKE (p->w, p->events);	1210	EV_CB_INVOKE (p->w, p->events);
1069	}	1211	}
1070	}	1212	}
1071	}	1213	}
1072		1214
1073	inline void	1215	void inline_size
1074	timers_reify (EV_P)	1216	timers_reify (EV_P)
1075	{	1217	{
1076	while (timercnt && ((WT)timers [0])->at <= mn_now)	1218	while (timercnt && ((WT)timers [0])->at <= mn_now)
1077	{	1219	{
1078	struct ev_timer *w = timers [0];	1220	ev_timer *w = timers [0];
1079		1221
1080	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1222	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1081		1223
1082	/* first reschedule or stop timer */	1224	/* first reschedule or stop timer */
1083	if (w->repeat)	1225	if (w->repeat)
1084	{	1226	{
1085	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1227	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
…		…
1095		1237
1096	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1238	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1097	}	1239	}
1098	}	1240	}
1099		1241
1100	#if EV_PERIODICS	1242	#if EV_PERIODIC_ENABLE
1101	inline void	1243	void inline_size
1102	periodics_reify (EV_P)	1244	periodics_reify (EV_P)
1103	{	1245	{
1104	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1246	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1105	{	1247	{
1106	struct ev_periodic *w = periodics [0];	1248	ev_periodic *w = periodics [0];
1107		1249
1108	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1250	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1109		1251
1110	/* first reschedule or stop timer */	1252	/* first reschedule or stop timer */
1111	if (w->reschedule_cb)	1253	if (w->reschedule_cb)
1112	{	1254	{
1113	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1255	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1114	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1256	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1115	downheap ((WT *)periodics, periodiccnt, 0);	1257	downheap ((WT *)periodics, periodiccnt, 0);
1116	}	1258	}
1117	else if (w->interval)	1259	else if (w->interval)
1118	{	1260	{
1119	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1261	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1262	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1120	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1263	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1121	downheap ((WT *)periodics, periodiccnt, 0);	1264	downheap ((WT *)periodics, periodiccnt, 0);
1122	}	1265	}
1123	else	1266	else
1124	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1267	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1125		1268
1126	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1269	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1127	}	1270	}
1128	}	1271	}
1129		1272
1130	static void	1273	static void noinline
1131	periodics_reschedule (EV_P)	1274	periodics_reschedule (EV_P)
1132	{	1275	{
1133	int i;	1276	int i;
1134		1277
1135	/* adjust periodics after time jump */	1278	/* adjust periodics after time jump */
1136	for (i = 0; i < periodiccnt; ++i)	1279	for (i = 0; i < periodiccnt; ++i)
1137	{	1280	{
1138	struct ev_periodic *w = periodics [i];	1281	ev_periodic *w = periodics [i];
1139		1282
1140	if (w->reschedule_cb)	1283	if (w->reschedule_cb)
1141	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1284	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1142	else if (w->interval)	1285	else if (w->interval)
1143	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1286	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1144	}	1287	}
1145		1288
1146	/* now rebuild the heap */	1289	/* now rebuild the heap */
1147	for (i = periodiccnt >> 1; i--; )	1290	for (i = periodiccnt >> 1; i--; )
1148	downheap ((WT *)periodics, periodiccnt, i);	1291	downheap ((WT *)periodics, periodiccnt, i);
1149	}	1292	}
1150	#endif	1293	#endif
1151		1294
1152	inline int	1295	#if EV_IDLE_ENABLE
1153	time_update_monotonic (EV_P)	1296	void inline_size
		1297	idle_reify (EV_P)
1154	{	1298	{
		1299	if (expect_false (idleall))
		1300	{
		1301	int pri;
		1302
		1303	for (pri = NUMPRI; pri--; )
		1304	{
		1305	if (pendingcnt [pri])
		1306	break;
		1307
		1308	if (idlecnt [pri])
		1309	{
		1310	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1311	break;
		1312	}
		1313	}
		1314	}
		1315	}
		1316	#endif
		1317
		1318	void inline_speed
		1319	time_update (EV_P_ ev_tstamp max_block)
		1320	{
		1321	int i;
		1322
		1323	#if EV_USE_MONOTONIC
		1324	if (expect_true (have_monotonic))
		1325	{
		1326	ev_tstamp odiff = rtmn_diff;
		1327
1155	mn_now = get_clock ();	1328	mn_now = get_clock ();
1156		1329
		1330	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1331	/* interpolate in the meantime */
1157	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1332	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1158	{	1333	{
1159	ev_rt_now = rtmn_diff + mn_now;	1334	ev_rt_now = rtmn_diff + mn_now;
1160	return 0;	1335	return;
1161	}	1336	}
1162	else	1337
1163	{
1164	now_floor = mn_now;	1338	now_floor = mn_now;
1165	ev_rt_now = ev_time ();	1339	ev_rt_now = ev_time ();
1166	return 1;
1167	}
1168	}
1169		1340
1170	inline void	1341	/* loop a few times, before making important decisions.
1171	time_update (EV_P)	1342	* on the choice of "4": one iteration isn't enough,
1172	{	1343	* in case we get preempted during the calls to
1173	int i;	1344	* ev_time and get_clock. a second call is almost guaranteed
1174		1345	* to succeed in that case, though. and looping a few more times
1175	#if EV_USE_MONOTONIC	1346	* doesn't hurt either as we only do this on time-jumps or
1176	if (expect_true (have_monotonic))	1347	* in the unlikely event of having been preempted here.
1177	{	1348	*/
1178	if (time_update_monotonic (EV_A))	1349	for (i = 4; --i; )
1179	{	1350	{
1180	ev_tstamp odiff = rtmn_diff;
1181
1182	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1183	{
1184	rtmn_diff = ev_rt_now - mn_now;	1351	rtmn_diff = ev_rt_now - mn_now;
1185		1352
1186	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1353	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1187	return; /* all is well */	1354	return; /* all is well */
1188		1355
1189	ev_rt_now = ev_time ();	1356	ev_rt_now = ev_time ();
1190	mn_now = get_clock ();	1357	mn_now = get_clock ();
1191	now_floor = mn_now;	1358	now_floor = mn_now;
1192	}	1359	}
1193		1360
1194	# if EV_PERIODICS	1361	# if EV_PERIODIC_ENABLE
		1362	periodics_reschedule (EV_A);
		1363	# endif
		1364	/* no timer adjustment, as the monotonic clock doesn't jump */
		1365	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1366	}
		1367	else
		1368	#endif
		1369	{
		1370	ev_rt_now = ev_time ();
		1371
		1372	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1373	{
		1374	#if EV_PERIODIC_ENABLE
1195	periodics_reschedule (EV_A);	1375	periodics_reschedule (EV_A);
1196	# endif	1376	#endif
1197	/* no timer adjustment, as the monotonic clock doesn't jump */
1198	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1199	}
1200	}
1201	else
1202	#endif
1203	{
1204	ev_rt_now = ev_time ();
1205
1206	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1207	{
1208	#if EV_PERIODICS
1209	periodics_reschedule (EV_A);
1210	#endif
1211
1212	/* adjust timers. this is easy, as the offset is the same for all */	1377	/* adjust timers. this is easy, as the offset is the same for all of them */
1213	for (i = 0; i < timercnt; ++i)	1378	for (i = 0; i < timercnt; ++i)
1214	((WT)timers [i])->at += ev_rt_now - mn_now;	1379	((WT)timers [i])->at += ev_rt_now - mn_now;
1215	}	1380	}
1216		1381
1217	mn_now = ev_rt_now;	1382	mn_now = ev_rt_now;
…		…
1233	static int loop_done;	1398	static int loop_done;
1234		1399
1235	void	1400	void
1236	ev_loop (EV_P_ int flags)	1401	ev_loop (EV_P_ int flags)
1237	{	1402	{
1238	double block;
1239	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1403	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1404	? EVUNLOOP_ONE
		1405	: EVUNLOOP_CANCEL;
1240		1406
1241	while (activecnt)	1407	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1408
		1409	do
1242	{	1410	{
		1411	#ifndef _WIN32
		1412	if (expect_false (curpid)) /* penalise the forking check even more */
		1413	if (expect_false (getpid () != curpid))
		1414	{
		1415	curpid = getpid ();
		1416	postfork = 1;
		1417	}
		1418	#endif
		1419
		1420	#if EV_FORK_ENABLE
		1421	/* we might have forked, so queue fork handlers */
		1422	if (expect_false (postfork))
		1423	if (forkcnt)
		1424	{
		1425	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1426	call_pending (EV_A);
		1427	}
		1428	#endif
		1429
1243	/* queue check watchers (and execute them) */	1430	/* queue prepare watchers (and execute them) */
1244	if (expect_false (preparecnt))	1431	if (expect_false (preparecnt))
1245	{	1432	{
1246	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1433	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1247	call_pending (EV_A);	1434	call_pending (EV_A);
1248	}	1435	}
1249		1436
		1437	if (expect_false (!activecnt))
		1438	break;
		1439
1250	/* we might have forked, so reify kernel state if necessary */	1440	/* we might have forked, so reify kernel state if necessary */
1251	if (expect_false (postfork))	1441	if (expect_false (postfork))
1252	loop_fork (EV_A);	1442	loop_fork (EV_A);
1253		1443
1254	/* update fd-related kernel structures */	1444	/* update fd-related kernel structures */
1255	fd_reify (EV_A);	1445	fd_reify (EV_A);
1256		1446
1257	/* calculate blocking time */	1447	/* calculate blocking time */
		1448	{
		1449	ev_tstamp block;
1258		1450
1259	/* we only need this for !monotonic clock or timers, but as we basically	1451	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1260	always have timers, we just calculate it always */	1452	block = 0.; /* do not block at all */
1261	#if EV_USE_MONOTONIC
1262	if (expect_true (have_monotonic))
1263	time_update_monotonic (EV_A);
1264	else	1453	else
1265	#endif
1266	{	1454	{
1267	ev_rt_now = ev_time ();	1455	/* update time to cancel out callback processing overhead */
1268	mn_now = ev_rt_now;	1456	time_update (EV_A_ 1e100);
1269	}
1270		1457
1271	if (flags & EVLOOP_NONBLOCK || idlecnt)
1272	block = 0.;
1273	else
1274	{
1275	block = MAX_BLOCKTIME;	1458	block = MAX_BLOCKTIME;
1276		1459
1277	if (timercnt)	1460	if (timercnt)
1278	{	1461	{
1279	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1462	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1280	if (block > to) block = to;	1463	if (block > to) block = to;
1281	}	1464	}
1282		1465
1283	#if EV_PERIODICS	1466	#if EV_PERIODIC_ENABLE
1284	if (periodiccnt)	1467	if (periodiccnt)
1285	{	1468	{
1286	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1469	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1287	if (block > to) block = to;	1470	if (block > to) block = to;
1288	}	1471	}
1289	#endif	1472	#endif
1290		1473
1291	if (expect_false (block < 0.)) block = 0.;	1474	if (expect_false (block < 0.)) block = 0.;
1292	}	1475	}
1293		1476
		1477	++loop_count;
1294	backend_poll (EV_A_ block);	1478	backend_poll (EV_A_ block);
1295		1479
1296	/* update ev_rt_now, do magic */	1480	/* update ev_rt_now, do magic */
1297	time_update (EV_A);	1481	time_update (EV_A_ block);
		1482	}
1298		1483
1299	/* queue pending timers and reschedule them */	1484	/* queue pending timers and reschedule them */
1300	timers_reify (EV_A); /* relative timers called last */	1485	timers_reify (EV_A); /* relative timers called last */
1301	#if EV_PERIODICS	1486	#if EV_PERIODIC_ENABLE
1302	periodics_reify (EV_A); /* absolute timers called first */	1487	periodics_reify (EV_A); /* absolute timers called first */
1303	#endif	1488	#endif
1304		1489
		1490	#if EV_IDLE_ENABLE
1305	/* queue idle watchers unless io or timers are pending */	1491	/* queue idle watchers unless other events are pending */
1306	if (idlecnt && !any_pending (EV_A))	1492	idle_reify (EV_A);
1307	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1493	#endif
1308		1494
1309	/* queue check watchers, to be executed first */	1495	/* queue check watchers, to be executed first */
1310	if (expect_false (checkcnt))	1496	if (expect_false (checkcnt))
1311	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1497	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1312		1498
1313	call_pending (EV_A);	1499	call_pending (EV_A);
1314		1500
1315	if (expect_false (loop_done))
1316	break;
1317	}	1501	}
		1502	while (expect_true (activecnt && !loop_done));
1318		1503
1319	if (loop_done != 2)	1504	if (loop_done == EVUNLOOP_ONE)
1320	loop_done = 0;	1505	loop_done = EVUNLOOP_CANCEL;
1321	}	1506	}
1322		1507
1323	void	1508	void
1324	ev_unloop (EV_P_ int how)	1509	ev_unloop (EV_P_ int how)
1325	{	1510	{
1326	loop_done = how;	1511	loop_done = how;
1327	}	1512	}
1328		1513
1329	/*****************************************************************************/	1514	/*****************************************************************************/
1330		1515
1331	inline void	1516	void inline_size
1332	wlist_add (WL *head, WL elem)	1517	wlist_add (WL *head, WL elem)
1333	{	1518	{
1334	elem->next = *head;	1519	elem->next = *head;
1335	*head = elem;	1520	*head = elem;
1336	}	1521	}
1337		1522
1338	inline void	1523	void inline_size
1339	wlist_del (WL *head, WL elem)	1524	wlist_del (WL *head, WL elem)
1340	{	1525	{
1341	while (*head)	1526	while (*head)
1342	{	1527	{
1343	if (*head == elem)	1528	if (*head == elem)
…		…
1348		1533
1349	head = &(*head)->next;	1534	head = &(*head)->next;
1350	}	1535	}
1351	}	1536	}
1352		1537
1353	inline void	1538	void inline_speed
1354	ev_clear_pending (EV_P_ W w)	1539	clear_pending (EV_P_ W w)
1355	{	1540	{
1356	if (w->pending)	1541	if (w->pending)
1357	{	1542	{
1358	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1543	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1359	w->pending = 0;	1544	w->pending = 0;
1360	}	1545	}
1361	}	1546	}
1362		1547
1363	inline void	1548	int
		1549	ev_clear_pending (EV_P_ void *w)
		1550	{
		1551	W w_ = (W)w;
		1552	int pending = w_->pending;
		1553
		1554	if (expect_true (pending))
		1555	{
		1556	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1557	w_->pending = 0;
		1558	p->w = 0;
		1559	return p->events;
		1560	}
		1561	else
		1562	return 0;
		1563	}
		1564
		1565	void inline_size
		1566	pri_adjust (EV_P_ W w)
		1567	{
		1568	int pri = w->priority;
		1569	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1570	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1571	w->priority = pri;
		1572	}
		1573
		1574	void inline_speed
1364	ev_start (EV_P_ W w, int active)	1575	ev_start (EV_P_ W w, int active)
1365	{	1576	{
1366	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1577	pri_adjust (EV_A_ w);
1367	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1368
1369	w->active = active;	1578	w->active = active;
1370	ev_ref (EV_A);	1579	ev_ref (EV_A);
1371	}	1580	}
1372		1581
1373	inline void	1582	void inline_size
1374	ev_stop (EV_P_ W w)	1583	ev_stop (EV_P_ W w)
1375	{	1584	{
1376	ev_unref (EV_A);	1585	ev_unref (EV_A);
1377	w->active = 0;	1586	w->active = 0;
1378	}	1587	}
1379		1588
1380	/*****************************************************************************/	1589	/*****************************************************************************/
1381		1590
1382	void	1591	void noinline
1383	ev_io_start (EV_P_ struct ev_io *w)	1592	ev_io_start (EV_P_ ev_io *w)
1384	{	1593	{
1385	int fd = w->fd;	1594	int fd = w->fd;
1386		1595
1387	if (expect_false (ev_is_active (w)))	1596	if (expect_false (ev_is_active (w)))
1388	return;	1597	return;
…		…
1394	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1603	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1395		1604
1396	fd_change (EV_A_ fd);	1605	fd_change (EV_A_ fd);
1397	}	1606	}
1398		1607
1399	void	1608	void noinline
1400	ev_io_stop (EV_P_ struct ev_io *w)	1609	ev_io_stop (EV_P_ ev_io *w)
1401	{	1610	{
1402	ev_clear_pending (EV_A_ (W)w);	1611	clear_pending (EV_A_ (W)w);
1403	if (expect_false (!ev_is_active (w)))	1612	if (expect_false (!ev_is_active (w)))
1404	return;	1613	return;
1405		1614
1406	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1615	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1407		1616
…		…
1409	ev_stop (EV_A_ (W)w);	1618	ev_stop (EV_A_ (W)w);
1410		1619
1411	fd_change (EV_A_ w->fd);	1620	fd_change (EV_A_ w->fd);
1412	}	1621	}
1413		1622
1414	void	1623	void noinline
1415	ev_timer_start (EV_P_ struct ev_timer *w)	1624	ev_timer_start (EV_P_ ev_timer *w)
1416	{	1625	{
1417	if (expect_false (ev_is_active (w)))	1626	if (expect_false (ev_is_active (w)))
1418	return;	1627	return;
1419		1628
1420	((WT)w)->at += mn_now;	1629	((WT)w)->at += mn_now;
1421		1630
1422	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1631	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1423		1632
1424	ev_start (EV_A_ (W)w, ++timercnt);	1633	ev_start (EV_A_ (W)w, ++timercnt);
1425	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);	1634	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1426	timers [timercnt - 1] = w;	1635	timers [timercnt - 1] = w;
1427	upheap ((WT *)timers, timercnt - 1);	1636	upheap ((WT *)timers, timercnt - 1);
1428		1637
		1638	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1639	}
		1640
		1641	void noinline
		1642	ev_timer_stop (EV_P_ ev_timer *w)
		1643	{
		1644	clear_pending (EV_A_ (W)w);
		1645	if (expect_false (!ev_is_active (w)))
		1646	return;
		1647
1429	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1648	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1430	}
1431		1649
1432	void	1650	{
1433	ev_timer_stop (EV_P_ struct ev_timer *w)	1651	int active = ((W)w)->active;
1434	{
1435	ev_clear_pending (EV_A_ (W)w);
1436	if (expect_false (!ev_is_active (w)))
1437	return;
1438		1652
1439	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1440
1441	if (expect_true (((W)w)->active < timercnt--))	1653	if (expect_true (--active < --timercnt))
1442	{	1654	{
1443	timers [((W)w)->active - 1] = timers [timercnt];	1655	timers [active] = timers [timercnt];
1444	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1656	adjustheap ((WT *)timers, timercnt, active);
1445	}	1657	}
		1658	}
1446		1659
1447	((WT)w)->at -= mn_now;	1660	((WT)w)->at -= mn_now;
1448		1661
1449	ev_stop (EV_A_ (W)w);	1662	ev_stop (EV_A_ (W)w);
1450	}	1663	}
1451		1664
1452	void	1665	void noinline
1453	ev_timer_again (EV_P_ struct ev_timer *w)	1666	ev_timer_again (EV_P_ ev_timer *w)
1454	{	1667	{
1455	if (ev_is_active (w))	1668	if (ev_is_active (w))
1456	{	1669	{
1457	if (w->repeat)	1670	if (w->repeat)
1458	{	1671	{
…		…
1467	w->at = w->repeat;	1680	w->at = w->repeat;
1468	ev_timer_start (EV_A_ w);	1681	ev_timer_start (EV_A_ w);
1469	}	1682	}
1470	}	1683	}
1471		1684
1472	#if EV_PERIODICS	1685	#if EV_PERIODIC_ENABLE
1473	void	1686	void noinline
1474	ev_periodic_start (EV_P_ struct ev_periodic *w)	1687	ev_periodic_start (EV_P_ ev_periodic *w)
1475	{	1688	{
1476	if (expect_false (ev_is_active (w)))	1689	if (expect_false (ev_is_active (w)))
1477	return;	1690	return;
1478		1691
1479	if (w->reschedule_cb)	1692	if (w->reschedule_cb)
1480	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1693	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1481	else if (w->interval)	1694	else if (w->interval)
1482	{	1695	{
1483	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1696	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1484	/* this formula differs from the one in periodic_reify because we do not always round up */	1697	/* this formula differs from the one in periodic_reify because we do not always round up */
1485	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1698	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1486	}	1699	}
		1700	else
		1701	((WT)w)->at = w->offset;
1487		1702
1488	ev_start (EV_A_ (W)w, ++periodiccnt);	1703	ev_start (EV_A_ (W)w, ++periodiccnt);
1489	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1704	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1490	periodics [periodiccnt - 1] = w;	1705	periodics [periodiccnt - 1] = w;
1491	upheap ((WT *)periodics, periodiccnt - 1);	1706	upheap ((WT *)periodics, periodiccnt - 1);
1492		1707
		1708	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1709	}
		1710
		1711	void noinline
		1712	ev_periodic_stop (EV_P_ ev_periodic *w)
		1713	{
		1714	clear_pending (EV_A_ (W)w);
		1715	if (expect_false (!ev_is_active (w)))
		1716	return;
		1717
1493	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1718	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1494	}
1495		1719
1496	void	1720	{
1497	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1721	int active = ((W)w)->active;
1498	{
1499	ev_clear_pending (EV_A_ (W)w);
1500	if (expect_false (!ev_is_active (w)))
1501	return;
1502		1722
1503	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1504
1505	if (expect_true (((W)w)->active < periodiccnt--))	1723	if (expect_true (--active < --periodiccnt))
1506	{	1724	{
1507	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1725	periodics [active] = periodics [periodiccnt];
1508	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1726	adjustheap ((WT *)periodics, periodiccnt, active);
1509	}	1727	}
		1728	}
1510		1729
1511	ev_stop (EV_A_ (W)w);	1730	ev_stop (EV_A_ (W)w);
1512	}	1731	}
1513		1732
1514	void	1733	void noinline
1515	ev_periodic_again (EV_P_ struct ev_periodic *w)	1734	ev_periodic_again (EV_P_ ev_periodic *w)
1516	{	1735	{
1517	/* TODO: use adjustheap and recalculation */	1736	/* TODO: use adjustheap and recalculation */
1518	ev_periodic_stop (EV_A_ w);	1737	ev_periodic_stop (EV_A_ w);
1519	ev_periodic_start (EV_A_ w);	1738	ev_periodic_start (EV_A_ w);
1520	}	1739	}
1521	#endif	1740	#endif
1522		1741
1523	void
1524	ev_idle_start (EV_P_ struct ev_idle *w)
1525	{
1526	if (expect_false (ev_is_active (w)))
1527	return;
1528
1529	ev_start (EV_A_ (W)w, ++idlecnt);
1530	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1531	idles [idlecnt - 1] = w;
1532	}
1533
1534	void
1535	ev_idle_stop (EV_P_ struct ev_idle *w)
1536	{
1537	ev_clear_pending (EV_A_ (W)w);
1538	if (expect_false (!ev_is_active (w)))
1539	return;
1540
1541	idles [((W)w)->active - 1] = idles [--idlecnt];
1542	ev_stop (EV_A_ (W)w);
1543	}
1544
1545	void
1546	ev_prepare_start (EV_P_ struct ev_prepare *w)
1547	{
1548	if (expect_false (ev_is_active (w)))
1549	return;
1550
1551	ev_start (EV_A_ (W)w, ++preparecnt);
1552	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1553	prepares [preparecnt - 1] = w;
1554	}
1555
1556	void
1557	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1558	{
1559	ev_clear_pending (EV_A_ (W)w);
1560	if (expect_false (!ev_is_active (w)))
1561	return;
1562
1563	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1564	ev_stop (EV_A_ (W)w);
1565	}
1566
1567	void
1568	ev_check_start (EV_P_ struct ev_check *w)
1569	{
1570	if (expect_false (ev_is_active (w)))
1571	return;
1572
1573	ev_start (EV_A_ (W)w, ++checkcnt);
1574	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1575	checks [checkcnt - 1] = w;
1576	}
1577
1578	void
1579	ev_check_stop (EV_P_ struct ev_check *w)
1580	{
1581	ev_clear_pending (EV_A_ (W)w);
1582	if (expect_false (!ev_is_active (w)))
1583	return;
1584
1585	checks [((W)w)->active - 1] = checks [--checkcnt];
1586	ev_stop (EV_A_ (W)w);
1587	}
1588
1589	#ifndef SA_RESTART	1742	#ifndef SA_RESTART
1590	# define SA_RESTART 0	1743	# define SA_RESTART 0
1591	#endif	1744	#endif
1592		1745
1593	void	1746	void noinline
1594	ev_signal_start (EV_P_ struct ev_signal *w)	1747	ev_signal_start (EV_P_ ev_signal *w)
1595	{	1748	{
1596	#if EV_MULTIPLICITY	1749	#if EV_MULTIPLICITY
1597	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1750	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1598	#endif	1751	#endif
1599	if (expect_false (ev_is_active (w)))	1752	if (expect_false (ev_is_active (w)))
1600	return;	1753	return;
1601		1754
1602	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1755	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1603		1756
		1757	{
		1758	#ifndef _WIN32
		1759	sigset_t full, prev;
		1760	sigfillset (&full);
		1761	sigprocmask (SIG_SETMASK, &full, &prev);
		1762	#endif
		1763
		1764	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1765
		1766	#ifndef _WIN32
		1767	sigprocmask (SIG_SETMASK, &prev, 0);
		1768	#endif
		1769	}
		1770
1604	ev_start (EV_A_ (W)w, 1);	1771	ev_start (EV_A_ (W)w, 1);
1605	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1606	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1772	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1607		1773
1608	if (!((WL)w)->next)	1774	if (!((WL)w)->next)
1609	{	1775	{
1610	#if _WIN32	1776	#if _WIN32
…		…
1617	sigaction (w->signum, &sa, 0);	1783	sigaction (w->signum, &sa, 0);
1618	#endif	1784	#endif
1619	}	1785	}
1620	}	1786	}
1621		1787
1622	void	1788	void noinline
1623	ev_signal_stop (EV_P_ struct ev_signal *w)	1789	ev_signal_stop (EV_P_ ev_signal *w)
1624	{	1790	{
1625	ev_clear_pending (EV_A_ (W)w);	1791	clear_pending (EV_A_ (W)w);
1626	if (expect_false (!ev_is_active (w)))	1792	if (expect_false (!ev_is_active (w)))
1627	return;	1793	return;
1628		1794
1629	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1795	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1630	ev_stop (EV_A_ (W)w);	1796	ev_stop (EV_A_ (W)w);
…		…
1632	if (!signals [w->signum - 1].head)	1798	if (!signals [w->signum - 1].head)
1633	signal (w->signum, SIG_DFL);	1799	signal (w->signum, SIG_DFL);
1634	}	1800	}
1635		1801
1636	void	1802	void
1637	ev_child_start (EV_P_ struct ev_child *w)	1803	ev_child_start (EV_P_ ev_child *w)
1638	{	1804	{
1639	#if EV_MULTIPLICITY	1805	#if EV_MULTIPLICITY
1640	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1806	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1641	#endif	1807	#endif
1642	if (expect_false (ev_is_active (w)))	1808	if (expect_false (ev_is_active (w)))
1643	return;	1809	return;
1644		1810
1645	ev_start (EV_A_ (W)w, 1);	1811	ev_start (EV_A_ (W)w, 1);
1646	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1812	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1647	}	1813	}
1648		1814
1649	void	1815	void
1650	ev_child_stop (EV_P_ struct ev_child *w)	1816	ev_child_stop (EV_P_ ev_child *w)
1651	{	1817	{
1652	ev_clear_pending (EV_A_ (W)w);	1818	clear_pending (EV_A_ (W)w);
1653	if (expect_false (!ev_is_active (w)))	1819	if (expect_false (!ev_is_active (w)))
1654	return;	1820	return;
1655		1821
1656	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1822	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1657	ev_stop (EV_A_ (W)w);	1823	ev_stop (EV_A_ (W)w);
1658	}	1824	}
1659		1825
		1826	#if EV_STAT_ENABLE
		1827
		1828	# ifdef _WIN32
		1829	# undef lstat
		1830	# define lstat(a,b) _stati64 (a,b)
		1831	# endif
		1832
		1833	#define DEF_STAT_INTERVAL 5.0074891
		1834	#define MIN_STAT_INTERVAL 0.1074891
		1835
		1836	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1837
		1838	#if EV_USE_INOTIFY
		1839	# define EV_INOTIFY_BUFSIZE 8192
		1840
		1841	static void noinline
		1842	infy_add (EV_P_ ev_stat *w)
		1843	{
		1844	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);
		1845
		1846	if (w->wd < 0)
		1847	{
		1848	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1849
		1850	/* monitor some parent directory for speedup hints */
		1851	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1852	{
		1853	char path [4096];
		1854	strcpy (path, w->path);
		1855
		1856	do
		1857	{
		1858	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1859	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1860
		1861	char *pend = strrchr (path, '/');
		1862
		1863	if (!pend)
		1864	break; /* whoops, no '/', complain to your admin */
		1865
		1866	*pend = 0;
		1867	w->wd = inotify_add_watch (fs_fd, path, mask);
		1868	}
		1869	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1870	}
		1871	}
		1872	else
		1873	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1874
		1875	if (w->wd >= 0)
		1876	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1877	}
		1878
		1879	static void noinline
		1880	infy_del (EV_P_ ev_stat *w)
		1881	{
		1882	int slot;
		1883	int wd = w->wd;
		1884
		1885	if (wd < 0)
		1886	return;
		1887
		1888	w->wd = -2;
		1889	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1890	wlist_del (&fs_hash [slot].head, (WL)w);
		1891
		1892	/* remove this watcher, if others are watching it, they will rearm */
		1893	inotify_rm_watch (fs_fd, wd);
		1894	}
		1895
		1896	static void noinline
		1897	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1898	{
		1899	if (slot < 0)
		1900	/* overflow, need to check for all hahs slots */
		1901	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1902	infy_wd (EV_A_ slot, wd, ev);
		1903	else
		1904	{
		1905	WL w_;
		1906
		1907	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1908	{
		1909	ev_stat *w = (ev_stat *)w_;
		1910	w_ = w_->next; /* lets us remove this watcher and all before it */
		1911
		1912	if (w->wd == wd || wd == -1)
		1913	{
		1914	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1915	{
		1916	w->wd = -1;
		1917	infy_add (EV_A_ w); /* re-add, no matter what */
		1918	}
		1919
		1920	stat_timer_cb (EV_A_ &w->timer, 0);
		1921	}
		1922	}
		1923	}
		1924	}
		1925
		1926	static void
		1927	infy_cb (EV_P_ ev_io *w, int revents)
		1928	{
		1929	char buf [EV_INOTIFY_BUFSIZE];
		1930	struct inotify_event *ev = (struct inotify_event *)buf;
		1931	int ofs;
		1932	int len = read (fs_fd, buf, sizeof (buf));
		1933
		1934	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1935	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1936	}
		1937
		1938	void inline_size
		1939	infy_init (EV_P)
		1940	{
		1941	if (fs_fd != -2)
		1942	return;
		1943
		1944	fs_fd = inotify_init ();
		1945
		1946	if (fs_fd >= 0)
		1947	{
		1948	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1949	ev_set_priority (&fs_w, EV_MAXPRI);
		1950	ev_io_start (EV_A_ &fs_w);
		1951	}
		1952	}
		1953
		1954	void inline_size
		1955	infy_fork (EV_P)
		1956	{
		1957	int slot;
		1958
		1959	if (fs_fd < 0)
		1960	return;
		1961
		1962	close (fs_fd);
		1963	fs_fd = inotify_init ();
		1964
		1965	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1966	{
		1967	WL w_ = fs_hash [slot].head;
		1968	fs_hash [slot].head = 0;
		1969
		1970	while (w_)
		1971	{
		1972	ev_stat *w = (ev_stat *)w_;
		1973	w_ = w_->next; /* lets us add this watcher */
		1974
		1975	w->wd = -1;
		1976
		1977	if (fs_fd >= 0)
		1978	infy_add (EV_A_ w); /* re-add, no matter what */
		1979	else
		1980	ev_timer_start (EV_A_ &w->timer);
		1981	}
		1982
		1983	}
		1984	}
		1985
		1986	#endif
		1987
		1988	void
		1989	ev_stat_stat (EV_P_ ev_stat *w)
		1990	{
		1991	if (lstat (w->path, &w->attr) < 0)
		1992	w->attr.st_nlink = 0;
		1993	else if (!w->attr.st_nlink)
		1994	w->attr.st_nlink = 1;
		1995	}
		1996
		1997	static void noinline
		1998	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1999	{
		2000	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2001
		2002	/* we copy this here each the time so that */
		2003	/* prev has the old value when the callback gets invoked */
		2004	w->prev = w->attr;
		2005	ev_stat_stat (EV_A_ w);
		2006
		2007	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2008	if (
		2009	w->prev.st_dev != w->attr.st_dev
		2010	|| w->prev.st_ino != w->attr.st_ino
		2011	|| w->prev.st_mode != w->attr.st_mode
		2012	|| w->prev.st_nlink != w->attr.st_nlink
		2013	|| w->prev.st_uid != w->attr.st_uid
		2014	|| w->prev.st_gid != w->attr.st_gid
		2015	|| w->prev.st_rdev != w->attr.st_rdev
		2016	|| w->prev.st_size != w->attr.st_size
		2017	|| w->prev.st_atime != w->attr.st_atime
		2018	|| w->prev.st_mtime != w->attr.st_mtime
		2019	|| w->prev.st_ctime != w->attr.st_ctime
		2020	) {
		2021	#if EV_USE_INOTIFY
		2022	infy_del (EV_A_ w);
		2023	infy_add (EV_A_ w);
		2024	ev_stat_stat (EV_A_ w); /* avoid race... */
		2025	#endif
		2026
		2027	ev_feed_event (EV_A_ w, EV_STAT);
		2028	}
		2029	}
		2030
		2031	void
		2032	ev_stat_start (EV_P_ ev_stat *w)
		2033	{
		2034	if (expect_false (ev_is_active (w)))
		2035	return;
		2036
		2037	/* since we use memcmp, we need to clear any padding data etc. */
		2038	memset (&w->prev, 0, sizeof (ev_statdata));
		2039	memset (&w->attr, 0, sizeof (ev_statdata));
		2040
		2041	ev_stat_stat (EV_A_ w);
		2042
		2043	if (w->interval < MIN_STAT_INTERVAL)
		2044	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2045
		2046	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2047	ev_set_priority (&w->timer, ev_priority (w));
		2048
		2049	#if EV_USE_INOTIFY
		2050	infy_init (EV_A);
		2051
		2052	if (fs_fd >= 0)
		2053	infy_add (EV_A_ w);
		2054	else
		2055	#endif
		2056	ev_timer_start (EV_A_ &w->timer);
		2057
		2058	ev_start (EV_A_ (W)w, 1);
		2059	}
		2060
		2061	void
		2062	ev_stat_stop (EV_P_ ev_stat *w)
		2063	{
		2064	clear_pending (EV_A_ (W)w);
		2065	if (expect_false (!ev_is_active (w)))
		2066	return;
		2067
		2068	#if EV_USE_INOTIFY
		2069	infy_del (EV_A_ w);
		2070	#endif
		2071	ev_timer_stop (EV_A_ &w->timer);
		2072
		2073	ev_stop (EV_A_ (W)w);
		2074	}
		2075	#endif
		2076
		2077	#if EV_IDLE_ENABLE
		2078	void
		2079	ev_idle_start (EV_P_ ev_idle *w)
		2080	{
		2081	if (expect_false (ev_is_active (w)))
		2082	return;
		2083
		2084	pri_adjust (EV_A_ (W)w);
		2085
		2086	{
		2087	int active = ++idlecnt [ABSPRI (w)];
		2088
		2089	++idleall;
		2090	ev_start (EV_A_ (W)w, active);
		2091
		2092	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2093	idles [ABSPRI (w)][active - 1] = w;
		2094	}
		2095	}
		2096
		2097	void
		2098	ev_idle_stop (EV_P_ ev_idle *w)
		2099	{
		2100	clear_pending (EV_A_ (W)w);
		2101	if (expect_false (!ev_is_active (w)))
		2102	return;
		2103
		2104	{
		2105	int active = ((W)w)->active;
		2106
		2107	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2108	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2109
		2110	ev_stop (EV_A_ (W)w);
		2111	--idleall;
		2112	}
		2113	}
		2114	#endif
		2115
		2116	void
		2117	ev_prepare_start (EV_P_ ev_prepare *w)
		2118	{
		2119	if (expect_false (ev_is_active (w)))
		2120	return;
		2121
		2122	ev_start (EV_A_ (W)w, ++preparecnt);
		2123	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2124	prepares [preparecnt - 1] = w;
		2125	}
		2126
		2127	void
		2128	ev_prepare_stop (EV_P_ ev_prepare *w)
		2129	{
		2130	clear_pending (EV_A_ (W)w);
		2131	if (expect_false (!ev_is_active (w)))
		2132	return;
		2133
		2134	{
		2135	int active = ((W)w)->active;
		2136	prepares [active - 1] = prepares [--preparecnt];
		2137	((W)prepares [active - 1])->active = active;
		2138	}
		2139
		2140	ev_stop (EV_A_ (W)w);
		2141	}
		2142
		2143	void
		2144	ev_check_start (EV_P_ ev_check *w)
		2145	{
		2146	if (expect_false (ev_is_active (w)))
		2147	return;
		2148
		2149	ev_start (EV_A_ (W)w, ++checkcnt);
		2150	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2151	checks [checkcnt - 1] = w;
		2152	}
		2153
		2154	void
		2155	ev_check_stop (EV_P_ ev_check *w)
		2156	{
		2157	clear_pending (EV_A_ (W)w);
		2158	if (expect_false (!ev_is_active (w)))
		2159	return;
		2160
		2161	{
		2162	int active = ((W)w)->active;
		2163	checks [active - 1] = checks [--checkcnt];
		2164	((W)checks [active - 1])->active = active;
		2165	}
		2166
		2167	ev_stop (EV_A_ (W)w);
		2168	}
		2169
		2170	#if EV_EMBED_ENABLE
		2171	void noinline
		2172	ev_embed_sweep (EV_P_ ev_embed *w)
		2173	{
		2174	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2175	}
		2176
		2177	static void
		2178	embed_cb (EV_P_ ev_io *io, int revents)
		2179	{
		2180	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2181
		2182	if (ev_cb (w))
		2183	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2184	else
		2185	ev_embed_sweep (loop, w);
		2186	}
		2187
		2188	void
		2189	ev_embed_start (EV_P_ ev_embed *w)
		2190	{
		2191	if (expect_false (ev_is_active (w)))
		2192	return;
		2193
		2194	{
		2195	struct ev_loop *loop = w->loop;
		2196	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2197	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2198	}
		2199
		2200	ev_set_priority (&w->io, ev_priority (w));
		2201	ev_io_start (EV_A_ &w->io);
		2202
		2203	ev_start (EV_A_ (W)w, 1);
		2204	}
		2205
		2206	void
		2207	ev_embed_stop (EV_P_ ev_embed *w)
		2208	{
		2209	clear_pending (EV_A_ (W)w);
		2210	if (expect_false (!ev_is_active (w)))
		2211	return;
		2212
		2213	ev_io_stop (EV_A_ &w->io);
		2214
		2215	ev_stop (EV_A_ (W)w);
		2216	}
		2217	#endif
		2218
		2219	#if EV_FORK_ENABLE
		2220	void
		2221	ev_fork_start (EV_P_ ev_fork *w)
		2222	{
		2223	if (expect_false (ev_is_active (w)))
		2224	return;
		2225
		2226	ev_start (EV_A_ (W)w, ++forkcnt);
		2227	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2228	forks [forkcnt - 1] = w;
		2229	}
		2230
		2231	void
		2232	ev_fork_stop (EV_P_ ev_fork *w)
		2233	{
		2234	clear_pending (EV_A_ (W)w);
		2235	if (expect_false (!ev_is_active (w)))
		2236	return;
		2237
		2238	{
		2239	int active = ((W)w)->active;
		2240	forks [active - 1] = forks [--forkcnt];
		2241	((W)forks [active - 1])->active = active;
		2242	}
		2243
		2244	ev_stop (EV_A_ (W)w);
		2245	}
		2246	#endif
		2247
1660	/*****************************************************************************/	2248	/*****************************************************************************/
1661		2249
1662	struct ev_once	2250	struct ev_once
1663	{	2251	{
1664	struct ev_io io;	2252	ev_io io;
1665	struct ev_timer to;	2253	ev_timer to;
1666	void (*cb)(int revents, void *arg);	2254	void (*cb)(int revents, void *arg);
1667	void *arg;	2255	void *arg;
1668	};	2256	};
1669		2257
1670	static void	2258	static void
…		…
1679		2267
1680	cb (revents, arg);	2268	cb (revents, arg);
1681	}	2269	}
1682		2270
1683	static void	2271	static void
1684	once_cb_io (EV_P_ struct ev_io *w, int revents)	2272	once_cb_io (EV_P_ ev_io *w, int revents)
1685	{	2273	{
1686	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2274	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1687	}	2275	}
1688		2276
1689	static void	2277	static void
1690	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2278	once_cb_to (EV_P_ ev_timer *w, int revents)
1691	{	2279	{
1692	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2280	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1693	}	2281	}
1694		2282
1695	void	2283	void

Diff Legend

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