[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.88 by root, Sat Nov 10 04:40:27 2007 UTC vs.
Revision 1.140 by root, Mon Nov 26 19:49:36 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
		44	# ifndef EV_USE_MONOTONIC
40	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
41	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
42	# endif	57	# endif
43		58
		59	# ifndef EV_USE_SELECT
44	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
45	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
46	# endif	65	# endif
47		66
		67	# ifndef EV_USE_POLL
48	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
49	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
50	# endif	73	# endif
51		74
		75	# ifndef EV_USE_EPOLL
52	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
53	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
54	# endif	81	# endif
55		82
		83	# ifndef EV_USE_KQUEUE
56	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
57	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
58	# endif	97	# endif
59		98
60	#endif	99	#endif
61		100
62	#include <math.h>	101	#include <math.h>
…		…
71	#include <sys/types.h>	110	#include <sys/types.h>
72	#include <time.h>	111	#include <time.h>
73		112
74	#include <signal.h>	113	#include <signal.h>
75		114
76	#ifndef WIN32	115	#ifndef _WIN32
77	# include <unistd.h>
78	# include <sys/time.h>	116	# include <sys/time.h>
79	# include <sys/wait.h>	117	# include <sys/wait.h>
		118	# include <unistd.h>
		119	#else
		120	# define WIN32_LEAN_AND_MEAN
		121	# include <windows.h>
		122	# ifndef EV_SELECT_IS_WINSOCKET
		123	# define EV_SELECT_IS_WINSOCKET 1
80	#endif	124	# endif
		125	#endif
		126
81	/**/	127	/**/
82		128
83	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
84	# define EV_USE_MONOTONIC 1	130	# define EV_USE_MONOTONIC 0
		131	#endif
		132
		133	#ifndef EV_USE_REALTIME
		134	# define EV_USE_REALTIME 0
85	#endif	135	#endif
86		136
87	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
88	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
89	#endif	139	#endif
90		140
91	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
92	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	142	# ifdef _WIN32
		143	# define EV_USE_POLL 0
		144	# else
		145	# define EV_USE_POLL 1
		146	# endif
93	#endif	147	#endif
94		148
95	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
96	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
97	#endif	151	#endif
98		152
99	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
100	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
101	#endif	155	#endif
102		156
103	#ifndef EV_USE_WIN32
104	# ifdef WIN32
105	# define EV_USE_WIN32 0 /* it does not exist, use select */
106	# undef EV_USE_SELECT
107	# define EV_USE_SELECT 1
108	# else
109	# define EV_USE_WIN32 0
110	# endif
111	#endif
112
113	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
114	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
115	#endif	159	#endif
116		160
117	/**/	161	/**/
118		162
119	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
124	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
125	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
126	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
127	#endif	171	#endif
128		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
129	/**/	177	/**/
130		178
131	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	179	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
132	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	180	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
133	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	181	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
134	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	182	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
135		183
136	#ifdef EV_H	184	#ifdef EV_H
137	# include EV_H	185	# include EV_H
138	#else	186	#else
139	# include "ev.h"	187	# include "ev.h"
140	#endif	188	#endif
141		189
142	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
143	# define expect(expr,value) __builtin_expect ((expr),(value))	191	# define expect(expr,value) __builtin_expect ((expr),(value))
		192	# define inline_size static inline /* inline for codesize */
		193	# if EV_MINIMAL
144	# define inline inline	194	# define noinline __attribute__ ((noinline))
		195	# define inline_speed static noinline
		196	# else
		197	# define noinline
		198	# define inline_speed static inline
		199	# endif
145	#else	200	#else
146	# define expect(expr,value) (expr)	201	# define expect(expr,value) (expr)
147	# define inline static	202	# define inline_speed static
		203	# define inline_minimal static
		204	# define noinline
148	#endif	205	#endif
149		206
150	#define expect_false(expr) expect ((expr) != 0, 0)	207	#define expect_false(expr) expect ((expr) != 0, 0)
151	#define expect_true(expr) expect ((expr) != 0, 1)	208	#define expect_true(expr) expect ((expr) != 0, 1)
152		209
153	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
154	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
155		212
		213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		214	#define EMPTY2(a,b) /* used to suppress some warnings */
		215
156	typedef struct ev_watcher *W;	216	typedef ev_watcher *W;
157	typedef struct ev_watcher_list *WL;	217	typedef ev_watcher_list *WL;
158	typedef struct ev_watcher_time *WT;	218	typedef ev_watcher_time *WT;
159		219
160	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
161		221
		222	#ifdef _WIN32
162	#include "ev_win32.c"	223	# include "ev_win32.c"
		224	#endif
163		225
164	/*****************************************************************************/	226	/*****************************************************************************/
165		227
166	static void (syserr_cb)(const char msg);	228	static void (syserr_cb)(const char msg);
167		229
…		…
214	typedef struct	276	typedef struct
215	{	277	{
216	WL head;	278	WL head;
217	unsigned char events;	279	unsigned char events;
218	unsigned char reify;	280	unsigned char reify;
		281	#if EV_SELECT_IS_WINSOCKET
		282	SOCKET handle;
		283	#endif
219	} ANFD;	284	} ANFD;
220		285
221	typedef struct	286	typedef struct
222	{	287	{
223	W w;	288	W w;
…		…
227	#if EV_MULTIPLICITY	292	#if EV_MULTIPLICITY
228		293
229	struct ev_loop	294	struct ev_loop
230	{	295	{
231	ev_tstamp ev_rt_now;	296	ev_tstamp ev_rt_now;
		297	#define ev_rt_now ((loop)->ev_rt_now)
232	#define VAR(name,decl) decl;	298	#define VAR(name,decl) decl;
233	#include "ev_vars.h"	299	#include "ev_vars.h"
234	#undef VAR	300	#undef VAR
235	};	301	};
236	#include "ev_wrap.h"	302	#include "ev_wrap.h"
237		303
238	struct ev_loop default_loop_struct;	304	static struct ev_loop default_loop_struct;
239	static struct ev_loop *default_loop;	305	struct ev_loop *ev_default_loop_ptr;
240		306
241	#else	307	#else
242		308
243	ev_tstamp ev_rt_now;	309	ev_tstamp ev_rt_now;
244	#define VAR(name,decl) static decl;	310	#define VAR(name,decl) static decl;
245	#include "ev_vars.h"	311	#include "ev_vars.h"
246	#undef VAR	312	#undef VAR
247		313
248	static int default_loop;	314	static int ev_default_loop_ptr;
249		315
250	#endif	316	#endif
251		317
252	/*****************************************************************************/	318	/*****************************************************************************/
253		319
254	inline ev_tstamp	320	ev_tstamp noinline
255	ev_time (void)	321	ev_time (void)
256	{	322	{
257	#if EV_USE_REALTIME	323	#if EV_USE_REALTIME
258	struct timespec ts;	324	struct timespec ts;
259	clock_gettime (CLOCK_REALTIME, &ts);	325	clock_gettime (CLOCK_REALTIME, &ts);
…		…
263	gettimeofday (&tv, 0);	329	gettimeofday (&tv, 0);
264	return tv.tv_sec + tv.tv_usec * 1e-6;	330	return tv.tv_sec + tv.tv_usec * 1e-6;
265	#endif	331	#endif
266	}	332	}
267		333
268	inline ev_tstamp	334	ev_tstamp inline_size
269	get_clock (void)	335	get_clock (void)
270	{	336	{
271	#if EV_USE_MONOTONIC	337	#if EV_USE_MONOTONIC
272	if (expect_true (have_monotonic))	338	if (expect_true (have_monotonic))
273	{	339	{
…		…
286	{	352	{
287	return ev_rt_now;	353	return ev_rt_now;
288	}	354	}
289	#endif	355	#endif
290		356
291	#define array_roundsize(type,n) ((n) \| 4 & ~3)	357	#define array_roundsize(type,n) (((n) \| 4) & ~3)
292		358
293	#define array_needsize(type,base,cur,cnt,init) \	359	#define array_needsize(type,base,cur,cnt,init) \
294	if (expect_false ((cnt) > cur)) \	360	if (expect_false ((cnt) > cur)) \
295	{ \	361	{ \
296	int newcnt = cur; \	362	int newcnt = cur; \
…		…
311	stem ## max = array_roundsize (stem ## cnt >> 1); \	377	stem ## max = array_roundsize (stem ## cnt >> 1); \
312	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\	378	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
313	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	379	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
314	}	380	}
315		381
316	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
317	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
318	#define array_free_microshit(stem) \
319	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
320
321	#define array_free(stem, idx) \	382	#define array_free(stem, idx) \
322	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	383	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
323		384
324	/*****************************************************************************/	385	/*****************************************************************************/
325		386
326	static void	387	void inline_size
327	anfds_init (ANFD *base, int count)	388	anfds_init (ANFD *base, int count)
328	{	389	{
329	while (count--)	390	while (count--)
330	{	391	{
331	base->head = 0;	392	base->head = 0;
…		…
334		395
335	++base;	396	++base;
336	}	397	}
337	}	398	}
338		399
339	void	400	void noinline
340	ev_feed_event (EV_P_ void *w, int revents)	401	ev_feed_event (EV_P_ void *w, int revents)
341	{	402	{
342	W w_ = (W)w;	403	W w_ = (W)w;
343		404
344	if (w_->pending)	405	if (expect_false (w_->pending))
345	{	406	{
346	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;	407	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
347	return;	408	return;
348	}	409	}
349		410
350	w_->pending = ++pendingcnt [ABSPRI (w_)];	411	w_->pending = ++pendingcnt [ABSPRI (w_)];
351	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));	412	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
352	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;	413	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
353	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;	414	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
354	}	415	}
355		416
356	static void	417	static void
…		…
360		421
361	for (i = 0; i < eventcnt; ++i)	422	for (i = 0; i < eventcnt; ++i)
362	ev_feed_event (EV_A_ events [i], type);	423	ev_feed_event (EV_A_ events [i], type);
363	}	424	}
364		425
365	inline void	426	void inline_speed
366	fd_event (EV_P_ int fd, int revents)	427	fd_event (EV_P_ int fd, int revents)
367	{	428	{
368	ANFD *anfd = anfds + fd;	429	ANFD *anfd = anfds + fd;
369	struct ev_io *w;	430	ev_io *w;
370		431
371	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	432	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
372	{	433	{
373	int ev = w->events & revents;	434	int ev = w->events & revents;
374		435
375	if (ev)	436	if (ev)
376	ev_feed_event (EV_A_ (W)w, ev);	437	ev_feed_event (EV_A_ (W)w, ev);
…		…
383	fd_event (EV_A_ fd, revents);	444	fd_event (EV_A_ fd, revents);
384	}	445	}
385		446
386	/*****************************************************************************/	447	/*****************************************************************************/
387		448
388	static void	449	void inline_size
389	fd_reify (EV_P)	450	fd_reify (EV_P)
390	{	451	{
391	int i;	452	int i;
392		453
393	for (i = 0; i < fdchangecnt; ++i)	454	for (i = 0; i < fdchangecnt; ++i)
394	{	455	{
395	int fd = fdchanges [i];	456	int fd = fdchanges [i];
396	ANFD *anfd = anfds + fd;	457	ANFD *anfd = anfds + fd;
397	struct ev_io *w;	458	ev_io *w;
398		459
399	int events = 0;	460	int events = 0;
400		461
401	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	462	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
402	events \|= w->events;	463	events \|= w->events;
403		464
		465	#if EV_SELECT_IS_WINSOCKET
		466	if (events)
		467	{
		468	unsigned long argp;
		469	anfd->handle = _get_osfhandle (fd);
		470	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		471	}
		472	#endif
		473
404	anfd->reify = 0;	474	anfd->reify = 0;
405		475
406	method_modify (EV_A_ fd, anfd->events, events);	476	backend_modify (EV_A_ fd, anfd->events, events);
407	anfd->events = events;	477	anfd->events = events;
408	}	478	}
409		479
410	fdchangecnt = 0;	480	fdchangecnt = 0;
411	}	481	}
412		482
413	static void	483	void inline_size
414	fd_change (EV_P_ int fd)	484	fd_change (EV_P_ int fd)
415	{	485	{
416	if (anfds [fd].reify)	486	if (expect_false (anfds [fd].reify))
417	return;	487	return;
418		488
419	anfds [fd].reify = 1;	489	anfds [fd].reify = 1;
420		490
421	++fdchangecnt;	491	++fdchangecnt;
422	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	492	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
423	fdchanges [fdchangecnt - 1] = fd;	493	fdchanges [fdchangecnt - 1] = fd;
424	}	494	}
425		495
426	static void	496	void inline_speed
427	fd_kill (EV_P_ int fd)	497	fd_kill (EV_P_ int fd)
428	{	498	{
429	struct ev_io *w;	499	ev_io *w;
430		500
431	while ((w = (struct ev_io *)anfds [fd].head))	501	while ((w = (ev_io *)anfds [fd].head))
432	{	502	{
433	ev_io_stop (EV_A_ w);	503	ev_io_stop (EV_A_ w);
434	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	504	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
435	}	505	}
436	}	506	}
437		507
438	static int	508	int inline_size
439	fd_valid (int fd)	509	fd_valid (int fd)
440	{	510	{
441	#ifdef WIN32	511	#ifdef _WIN32
442	return !!win32_get_osfhandle (fd);	512	return _get_osfhandle (fd) != -1;
443	#else	513	#else
444	return fcntl (fd, F_GETFD) != -1;	514	return fcntl (fd, F_GETFD) != -1;
445	#endif	515	#endif
446	}	516	}
447		517
448	/* called on EBADF to verify fds */	518	/* called on EBADF to verify fds */
449	static void	519	static void noinline
450	fd_ebadf (EV_P)	520	fd_ebadf (EV_P)
451	{	521	{
452	int fd;	522	int fd;
453		523
454	for (fd = 0; fd < anfdmax; ++fd)	524	for (fd = 0; fd < anfdmax; ++fd)
…		…
456	if (!fd_valid (fd) == -1 && errno == EBADF)	526	if (!fd_valid (fd) == -1 && errno == EBADF)
457	fd_kill (EV_A_ fd);	527	fd_kill (EV_A_ fd);
458	}	528	}
459		529
460	/* called on ENOMEM in select/poll to kill some fds and retry */	530	/* called on ENOMEM in select/poll to kill some fds and retry */
461	static void	531	static void noinline
462	fd_enomem (EV_P)	532	fd_enomem (EV_P)
463	{	533	{
464	int fd;	534	int fd;
465		535
466	for (fd = anfdmax; fd--; )	536	for (fd = anfdmax; fd--; )
…		…
469	fd_kill (EV_A_ fd);	539	fd_kill (EV_A_ fd);
470	return;	540	return;
471	}	541	}
472	}	542	}
473		543
474	/* usually called after fork if method needs to re-arm all fds from scratch */	544	/* usually called after fork if backend needs to re-arm all fds from scratch */
475	static void	545	static void noinline
476	fd_rearm_all (EV_P)	546	fd_rearm_all (EV_P)
477	{	547	{
478	int fd;	548	int fd;
479		549
480	/* this should be highly optimised to not do anything but set a flag */	550	/* this should be highly optimised to not do anything but set a flag */
…		…
486	}	556	}
487	}	557	}
488		558
489	/*****************************************************************************/	559	/*****************************************************************************/
490		560
491	static void	561	void inline_speed
492	upheap (WT *heap, int k)	562	upheap (WT *heap, int k)
493	{	563	{
494	WT w = heap [k];	564	WT w = heap [k];
495		565
496	while (k && heap [k >> 1]->at > w->at)	566	while (k && heap [k >> 1]->at > w->at)
…		…
503	heap [k] = w;	573	heap [k] = w;
504	((W)heap [k])->active = k + 1;	574	((W)heap [k])->active = k + 1;
505		575
506	}	576	}
507		577
508	static void	578	void inline_speed
509	downheap (WT *heap, int N, int k)	579	downheap (WT *heap, int N, int k)
510	{	580	{
511	WT w = heap [k];	581	WT w = heap [k];
512		582
513	while (k < (N >> 1))	583	while (k < (N >> 1))
…		…
527		597
528	heap [k] = w;	598	heap [k] = w;
529	((W)heap [k])->active = k + 1;	599	((W)heap [k])->active = k + 1;
530	}	600	}
531		601
532	inline void	602	void inline_size
533	adjustheap (WT *heap, int N, int k, ev_tstamp at)	603	adjustheap (WT *heap, int N, int k)
534	{	604	{
535	ev_tstamp old_at = heap [k]->at;	605	upheap (heap, k);
536	heap [k]->at = at;
537
538	if (old_at < at)
539	downheap (heap, N, k);	606	downheap (heap, N, k);
540	else
541	upheap (heap, k);
542	}	607	}
543		608
544	/*****************************************************************************/	609	/*****************************************************************************/
545		610
546	typedef struct	611	typedef struct
…		…
552	static ANSIG *signals;	617	static ANSIG *signals;
553	static int signalmax;	618	static int signalmax;
554		619
555	static int sigpipe [2];	620	static int sigpipe [2];
556	static sig_atomic_t volatile gotsig;	621	static sig_atomic_t volatile gotsig;
557	static struct ev_io sigev;	622	static ev_io sigev;
558		623
559	static void	624	void inline_size
560	signals_init (ANSIG *base, int count)	625	signals_init (ANSIG *base, int count)
561	{	626	{
562	while (count--)	627	while (count--)
563	{	628	{
564	base->head = 0;	629	base->head = 0;
…		…
569	}	634	}
570		635
571	static void	636	static void
572	sighandler (int signum)	637	sighandler (int signum)
573	{	638	{
574	#if WIN32	639	#if _WIN32
575	signal (signum, sighandler);	640	signal (signum, sighandler);
576	#endif	641	#endif
577		642
578	signals [signum - 1].gotsig = 1;	643	signals [signum - 1].gotsig = 1;
579		644
580	if (!gotsig)	645	if (!gotsig)
581	{	646	{
582	int old_errno = errno;	647	int old_errno = errno;
583	gotsig = 1;	648	gotsig = 1;
584	#ifdef WIN32
585	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
586	#else
587	write (sigpipe [1], &signum, 1);	649	write (sigpipe [1], &signum, 1);
588	#endif
589	errno = old_errno;	650	errno = old_errno;
590	}	651	}
591	}	652	}
592		653
593	void	654	void noinline
594	ev_feed_signal_event (EV_P_ int signum)	655	ev_feed_signal_event (EV_P_ int signum)
595	{	656	{
596	WL w;	657	WL w;
597		658
598	#if EV_MULTIPLICITY	659	#if EV_MULTIPLICITY
599	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	660	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
600	#endif	661	#endif
601		662
602	--signum;	663	--signum;
603		664
604	if (signum < 0 \|\| signum >= signalmax)	665	if (signum < 0 \|\| signum >= signalmax)
…		…
609	for (w = signals [signum].head; w; w = w->next)	670	for (w = signals [signum].head; w; w = w->next)
610	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	671	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
611	}	672	}
612		673
613	static void	674	static void
614	sigcb (EV_P_ struct ev_io *iow, int revents)	675	sigcb (EV_P_ ev_io *iow, int revents)
615	{	676	{
616	int signum;	677	int signum;
617		678
618	#ifdef WIN32
619	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
620	#else
621	read (sigpipe [0], &revents, 1);	679	read (sigpipe [0], &revents, 1);
622	#endif
623	gotsig = 0;	680	gotsig = 0;
624		681
625	for (signum = signalmax; signum--; )	682	for (signum = signalmax; signum--; )
626	if (signals [signum].gotsig)	683	if (signals [signum].gotsig)
627	ev_feed_signal_event (EV_A_ signum + 1);	684	ev_feed_signal_event (EV_A_ signum + 1);
628	}	685	}
629		686
630	static void	687	void inline_size
		688	fd_intern (int fd)
		689	{
		690	#ifdef _WIN32
		691	int arg = 1;
		692	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		693	#else
		694	fcntl (fd, F_SETFD, FD_CLOEXEC);
		695	fcntl (fd, F_SETFL, O_NONBLOCK);
		696	#endif
		697	}
		698
		699	static void noinline
631	siginit (EV_P)	700	siginit (EV_P)
632	{	701	{
633	#ifndef WIN32	702	fd_intern (sigpipe [0]);
634	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	703	fd_intern (sigpipe [1]);
635	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
636
637	/* rather than sort out wether we really need nb, set it */
638	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
639	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
640	#endif
641		704
642	ev_io_set (&sigev, sigpipe [0], EV_READ);	705	ev_io_set (&sigev, sigpipe [0], EV_READ);
643	ev_io_start (EV_A_ &sigev);	706	ev_io_start (EV_A_ &sigev);
644	ev_unref (EV_A); /* child watcher should not keep loop alive */	707	ev_unref (EV_A); /* child watcher should not keep loop alive */
645	}	708	}
646		709
647	/*****************************************************************************/	710	/*****************************************************************************/
648		711
649	static struct ev_child *childs [PID_HASHSIZE];	712	static ev_child *childs [PID_HASHSIZE];
650		713
651	#ifndef WIN32	714	#ifndef _WIN32
652		715
653	static struct ev_signal childev;	716	static ev_signal childev;
654		717
655	#ifndef WCONTINUED	718	#ifndef WCONTINUED
656	# define WCONTINUED 0	719	# define WCONTINUED 0
657	#endif	720	#endif
658		721
659	static void	722	void inline_speed
660	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	723	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
661	{	724	{
662	struct ev_child *w;	725	ev_child *w;
663		726
664	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	727	for (w = (ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
665	if (w->pid == pid \|\| !w->pid)	728	if (w->pid == pid \|\| !w->pid)
666	{	729	{
667	ev_priority (w) = ev_priority (sw); /* need to do it now */	730	ev_priority (w) = ev_priority (sw); /* need to do it now */
668	w->rpid = pid;	731	w->rpid = pid;
669	w->rstatus = status;	732	w->rstatus = status;
670	ev_feed_event (EV_A_ (W)w, EV_CHILD);	733	ev_feed_event (EV_A_ (W)w, EV_CHILD);
671	}	734	}
672	}	735	}
673		736
674	static void	737	static void
675	childcb (EV_P_ struct ev_signal *sw, int revents)	738	childcb (EV_P_ ev_signal *sw, int revents)
676	{	739	{
677	int pid, status;	740	int pid, status;
678		741
679	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	742	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
680	{	743	{
681	/* make sure we are called again until all childs have been reaped */	744	/* make sure we are called again until all childs have been reaped */
		745	/* we need to do it this way so that the callback gets called before we continue */
682	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	746	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
683		747
684	child_reap (EV_A_ sw, pid, pid, status);	748	child_reap (EV_A_ sw, pid, pid, status);
685	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	749	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
686	}	750	}
687	}	751	}
688		752
689	#endif	753	#endif
690		754
691	/*****************************************************************************/	755	/*****************************************************************************/
692		756
		757	#if EV_USE_PORT
		758	# include "ev_port.c"
		759	#endif
693	#if EV_USE_KQUEUE	760	#if EV_USE_KQUEUE
694	# include "ev_kqueue.c"	761	# include "ev_kqueue.c"
695	#endif	762	#endif
696	#if EV_USE_EPOLL	763	#if EV_USE_EPOLL
697	# include "ev_epoll.c"	764	# include "ev_epoll.c"
…		…
714	{	781	{
715	return EV_VERSION_MINOR;	782	return EV_VERSION_MINOR;
716	}	783	}
717		784
718	/* return true if we are running with elevated privileges and should ignore env variables */	785	/* return true if we are running with elevated privileges and should ignore env variables */
719	static int	786	int inline_size
720	enable_secure (void)	787	enable_secure (void)
721	{	788	{
722	#ifdef WIN32	789	#ifdef _WIN32
723	return 0;	790	return 0;
724	#else	791	#else
725	return getuid () != geteuid ()	792	return getuid () != geteuid ()
726	\|\| getgid () != getegid ();	793	\|\| getgid () != getegid ();
727	#endif	794	#endif
728	}	795	}
729		796
730	int	797	unsigned int
731	ev_method (EV_P)	798	ev_supported_backends (void)
732	{	799	{
733	return method;	800	unsigned int flags = 0;
		801
		802	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
		803	if (EV_USE_KQUEUE) flags \|= EVBACKEND_KQUEUE;
		804	if (EV_USE_EPOLL ) flags \|= EVBACKEND_EPOLL;
		805	if (EV_USE_POLL ) flags \|= EVBACKEND_POLL;
		806	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
		807
		808	return flags;
		809	}
		810
		811	unsigned int
		812	ev_recommended_backends (void)
		813	{
		814	unsigned int flags = ev_supported_backends ();
		815
		816	#ifndef __NetBSD__
		817	/* kqueue is borked on everything but netbsd apparently */
		818	/* it usually doesn't work correctly on anything but sockets and pipes */
		819	flags &= ~EVBACKEND_KQUEUE;
		820	#endif
		821	#ifdef __APPLE__
		822	// flags &= ~EVBACKEND_KQUEUE; for documentation
		823	flags &= ~EVBACKEND_POLL;
		824	#endif
		825
		826	return flags;
		827	}
		828
		829	unsigned int
		830	ev_embeddable_backends (void)
		831	{
		832	return EVBACKEND_EPOLL
		833	\| EVBACKEND_KQUEUE
		834	\| EVBACKEND_PORT;
		835	}
		836
		837	unsigned int
		838	ev_backend (EV_P)
		839	{
		840	return backend;
734	}	841	}
735		842
736	static void	843	static void
737	loop_init (EV_P_ int methods)	844	loop_init (EV_P_ unsigned int flags)
738	{	845	{
739	if (!method)	846	if (!backend)
740	{	847	{
741	#if EV_USE_MONOTONIC	848	#if EV_USE_MONOTONIC
742	{	849	{
743	struct timespec ts;	850	struct timespec ts;
744	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	851	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
749	ev_rt_now = ev_time ();	856	ev_rt_now = ev_time ();
750	mn_now = get_clock ();	857	mn_now = get_clock ();
751	now_floor = mn_now;	858	now_floor = mn_now;
752	rtmn_diff = ev_rt_now - mn_now;	859	rtmn_diff = ev_rt_now - mn_now;
753		860
754	if (methods == EVMETHOD_AUTO)	861	if (!(flags & EVFLAG_NOENV)
755	if (!enable_secure () && getenv ("LIBEV_METHODS"))	862	&& !enable_secure ()
		863	&& getenv ("LIBEV_FLAGS"))
756	methods = atoi (getenv ("LIBEV_METHODS"));	864	flags = atoi (getenv ("LIBEV_FLAGS"));
757	else
758	methods = EVMETHOD_ANY;
759		865
760	method = 0;	866	if (!(flags & 0x0000ffffUL))
761	#if EV_USE_WIN32	867	flags \|= ev_recommended_backends ();
762	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	868
		869	backend = 0;
		870	#if EV_USE_PORT
		871	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
763	#endif	872	#endif
764	#if EV_USE_KQUEUE	873	#if EV_USE_KQUEUE
765	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	874	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
766	#endif	875	#endif
767	#if EV_USE_EPOLL	876	#if EV_USE_EPOLL
768	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	877	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
769	#endif	878	#endif
770	#if EV_USE_POLL	879	#if EV_USE_POLL
771	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	880	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
772	#endif	881	#endif
773	#if EV_USE_SELECT	882	#if EV_USE_SELECT
774	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	883	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
775	#endif	884	#endif
776		885
777	ev_init (&sigev, sigcb);	886	ev_init (&sigev, sigcb);
778	ev_set_priority (&sigev, EV_MAXPRI);	887	ev_set_priority (&sigev, EV_MAXPRI);
779	}	888	}
780	}	889	}
781		890
782	void	891	static void
783	loop_destroy (EV_P)	892	loop_destroy (EV_P)
784	{	893	{
785	int i;	894	int i;
786		895
787	#if EV_USE_WIN32	896	#if EV_USE_PORT
788	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	897	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
789	#endif	898	#endif
790	#if EV_USE_KQUEUE	899	#if EV_USE_KQUEUE
791	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	900	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
792	#endif	901	#endif
793	#if EV_USE_EPOLL	902	#if EV_USE_EPOLL
794	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	903	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
795	#endif	904	#endif
796	#if EV_USE_POLL	905	#if EV_USE_POLL
797	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	906	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
798	#endif	907	#endif
799	#if EV_USE_SELECT	908	#if EV_USE_SELECT
800	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	909	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
801	#endif	910	#endif
802		911
803	for (i = NUMPRI; i--; )	912	for (i = NUMPRI; i--; )
804	array_free (pending, [i]);	913	array_free (pending, [i]);
805		914
806	/* have to use the microsoft-never-gets-it-right macro */	915	/* have to use the microsoft-never-gets-it-right macro */
807	array_free_microshit (fdchange);	916	array_free (fdchange, EMPTY0);
808	array_free_microshit (timer);	917	array_free (timer, EMPTY0);
809	array_free_microshit (periodic);	918	#if EV_PERIODIC_ENABLE
810	array_free_microshit (idle);	919	array_free (periodic, EMPTY0);
811	array_free_microshit (prepare);	920	#endif
812	array_free_microshit (check);	921	array_free (idle, EMPTY0);
		922	array_free (prepare, EMPTY0);
		923	array_free (check, EMPTY0);
813		924
814	method = 0;	925	backend = 0;
815	}	926	}
816		927
817	static void	928	static void
818	loop_fork (EV_P)	929	loop_fork (EV_P)
819	{	930	{
		931	#if EV_USE_PORT
		932	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		933	#endif
		934	#if EV_USE_KQUEUE
		935	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		936	#endif
820	#if EV_USE_EPOLL	937	#if EV_USE_EPOLL
821	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	938	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
822	#endif
823	#if EV_USE_KQUEUE
824	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
825	#endif	939	#endif
826		940
827	if (ev_is_active (&sigev))	941	if (ev_is_active (&sigev))
828	{	942	{
829	/* default loop */	943	/* default loop */
…		…
842	postfork = 0;	956	postfork = 0;
843	}	957	}
844		958
845	#if EV_MULTIPLICITY	959	#if EV_MULTIPLICITY
846	struct ev_loop *	960	struct ev_loop *
847	ev_loop_new (int methods)	961	ev_loop_new (unsigned int flags)
848	{	962	{
849	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	963	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
850		964
851	memset (loop, 0, sizeof (struct ev_loop));	965	memset (loop, 0, sizeof (struct ev_loop));
852		966
853	loop_init (EV_A_ methods);	967	loop_init (EV_A_ flags);
854		968
855	if (ev_method (EV_A))	969	if (ev_backend (EV_A))
856	return loop;	970	return loop;
857		971
858	return 0;	972	return 0;
859	}	973	}
860		974
…		…
873		987
874	#endif	988	#endif
875		989
876	#if EV_MULTIPLICITY	990	#if EV_MULTIPLICITY
877	struct ev_loop *	991	struct ev_loop *
		992	ev_default_loop_init (unsigned int flags)
878	#else	993	#else
879	int	994	int
		995	ev_default_loop (unsigned int flags)
880	#endif	996	#endif
881	ev_default_loop (int methods)
882	{	997	{
883	if (sigpipe [0] == sigpipe [1])	998	if (sigpipe [0] == sigpipe [1])
884	if (pipe (sigpipe))	999	if (pipe (sigpipe))
885	return 0;	1000	return 0;
886		1001
887	if (!default_loop)	1002	if (!ev_default_loop_ptr)
888	{	1003	{
889	#if EV_MULTIPLICITY	1004	#if EV_MULTIPLICITY
890	struct ev_loop *loop = default_loop = &default_loop_struct;	1005	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
891	#else	1006	#else
892	default_loop = 1;	1007	ev_default_loop_ptr = 1;
893	#endif	1008	#endif
894		1009
895	loop_init (EV_A_ methods);	1010	loop_init (EV_A_ flags);
896		1011
897	if (ev_method (EV_A))	1012	if (ev_backend (EV_A))
898	{	1013	{
899	siginit (EV_A);	1014	siginit (EV_A);
900		1015
901	#ifndef WIN32	1016	#ifndef _WIN32
902	ev_signal_init (&childev, childcb, SIGCHLD);	1017	ev_signal_init (&childev, childcb, SIGCHLD);
903	ev_set_priority (&childev, EV_MAXPRI);	1018	ev_set_priority (&childev, EV_MAXPRI);
904	ev_signal_start (EV_A_ &childev);	1019	ev_signal_start (EV_A_ &childev);
905	ev_unref (EV_A); /* child watcher should not keep loop alive */	1020	ev_unref (EV_A); /* child watcher should not keep loop alive */
906	#endif	1021	#endif
907	}	1022	}
908	else	1023	else
909	default_loop = 0;	1024	ev_default_loop_ptr = 0;
910	}	1025	}
911		1026
912	return default_loop;	1027	return ev_default_loop_ptr;
913	}	1028	}
914		1029
915	void	1030	void
916	ev_default_destroy (void)	1031	ev_default_destroy (void)
917	{	1032	{
918	#if EV_MULTIPLICITY	1033	#if EV_MULTIPLICITY
919	struct ev_loop *loop = default_loop;	1034	struct ev_loop *loop = ev_default_loop_ptr;
920	#endif	1035	#endif
921		1036
922	#ifndef WIN32	1037	#ifndef _WIN32
923	ev_ref (EV_A); /* child watcher */	1038	ev_ref (EV_A); /* child watcher */
924	ev_signal_stop (EV_A_ &childev);	1039	ev_signal_stop (EV_A_ &childev);
925	#endif	1040	#endif
926		1041
927	ev_ref (EV_A); /* signal watcher */	1042	ev_ref (EV_A); /* signal watcher */
…		…
935		1050
936	void	1051	void
937	ev_default_fork (void)	1052	ev_default_fork (void)
938	{	1053	{
939	#if EV_MULTIPLICITY	1054	#if EV_MULTIPLICITY
940	struct ev_loop *loop = default_loop;	1055	struct ev_loop *loop = ev_default_loop_ptr;
941	#endif	1056	#endif
942		1057
943	if (method)	1058	if (backend)
944	postfork = 1;	1059	postfork = 1;
945	}	1060	}
946		1061
947	/*****************************************************************************/	1062	/*****************************************************************************/
948		1063
949	static int	1064	int inline_size
950	any_pending (EV_P)	1065	any_pending (EV_P)
951	{	1066	{
952	int pri;	1067	int pri;
953		1068
954	for (pri = NUMPRI; pri--; )	1069	for (pri = NUMPRI; pri--; )
…		…
956	return 1;	1071	return 1;
957		1072
958	return 0;	1073	return 0;
959	}	1074	}
960		1075
961	static void	1076	void inline_speed
962	call_pending (EV_P)	1077	call_pending (EV_P)
963	{	1078	{
964	int pri;	1079	int pri;
965		1080
966	for (pri = NUMPRI; pri--; )	1081	for (pri = NUMPRI; pri--; )
967	while (pendingcnt [pri])	1082	while (pendingcnt [pri])
968	{	1083	{
969	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1084	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
970		1085
971	if (p->w)	1086	if (expect_true (p->w))
972	{	1087	{
		1088	assert (("non-pending watcher on pending list", p->w->pending));
		1089
973	p->w->pending = 0;	1090	p->w->pending = 0;
974	EV_CB_INVOKE (p->w, p->events);	1091	EV_CB_INVOKE (p->w, p->events);
975	}	1092	}
976	}	1093	}
977	}	1094	}
978		1095
979	static void	1096	void inline_size
980	timers_reify (EV_P)	1097	timers_reify (EV_P)
981	{	1098	{
982	while (timercnt && ((WT)timers [0])->at <= mn_now)	1099	while (timercnt && ((WT)timers [0])->at <= mn_now)
983	{	1100	{
984	struct ev_timer *w = timers [0];	1101	ev_timer *w = timers [0];
985		1102
986	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1103	assert (("inactive timer on timer heap detected", ev_is_active (w)));
987		1104
988	/* first reschedule or stop timer */	1105	/* first reschedule or stop timer */
989	if (w->repeat)	1106	if (w->repeat)
990	{	1107	{
991	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1108	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1109
992	((WT)w)->at = mn_now + w->repeat;	1110	((WT)w)->at += w->repeat;
		1111	if (((WT)w)->at < mn_now)
		1112	((WT)w)->at = mn_now;
		1113
993	downheap ((WT *)timers, timercnt, 0);	1114	downheap ((WT *)timers, timercnt, 0);
994	}	1115	}
995	else	1116	else
996	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1117	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
997		1118
998	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1119	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
999	}	1120	}
1000	}	1121	}
1001		1122
1002	static void	1123	#if EV_PERIODIC_ENABLE
		1124	void inline_size
1003	periodics_reify (EV_P)	1125	periodics_reify (EV_P)
1004	{	1126	{
1005	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1127	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1006	{	1128	{
1007	struct ev_periodic *w = periodics [0];	1129	ev_periodic *w = periodics [0];
1008		1130
1009	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1131	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1010		1132
1011	/* first reschedule or stop timer */	1133	/* first reschedule or stop timer */
1012	if (w->reschedule_cb)	1134	if (w->reschedule_cb)
1013	{	1135	{
1014	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1136	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1015
1016	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1137	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1017	downheap ((WT *)periodics, periodiccnt, 0);	1138	downheap ((WT *)periodics, periodiccnt, 0);
1018	}	1139	}
1019	else if (w->interval)	1140	else if (w->interval)
1020	{	1141	{
…		…
1027		1148
1028	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1149	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1029	}	1150	}
1030	}	1151	}
1031		1152
1032	static void	1153	static void noinline
1033	periodics_reschedule (EV_P)	1154	periodics_reschedule (EV_P)
1034	{	1155	{
1035	int i;	1156	int i;
1036		1157
1037	/* adjust periodics after time jump */	1158	/* adjust periodics after time jump */
1038	for (i = 0; i < periodiccnt; ++i)	1159	for (i = 0; i < periodiccnt; ++i)
1039	{	1160	{
1040	struct ev_periodic *w = periodics [i];	1161	ev_periodic *w = periodics [i];
1041		1162
1042	if (w->reschedule_cb)	1163	if (w->reschedule_cb)
1043	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1164	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1044	else if (w->interval)	1165	else if (w->interval)
1045	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1166	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
…		…
1047		1168
1048	/* now rebuild the heap */	1169	/* now rebuild the heap */
1049	for (i = periodiccnt >> 1; i--; )	1170	for (i = periodiccnt >> 1; i--; )
1050	downheap ((WT *)periodics, periodiccnt, i);	1171	downheap ((WT *)periodics, periodiccnt, i);
1051	}	1172	}
		1173	#endif
1052		1174
1053	inline int	1175	int inline_size
1054	time_update_monotonic (EV_P)	1176	time_update_monotonic (EV_P)
1055	{	1177	{
1056	mn_now = get_clock ();	1178	mn_now = get_clock ();
1057		1179
1058	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1180	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
…		…
1066	ev_rt_now = ev_time ();	1188	ev_rt_now = ev_time ();
1067	return 1;	1189	return 1;
1068	}	1190	}
1069	}	1191	}
1070		1192
1071	static void	1193	void inline_size
1072	time_update (EV_P)	1194	time_update (EV_P)
1073	{	1195	{
1074	int i;	1196	int i;
1075		1197
1076	#if EV_USE_MONOTONIC	1198	#if EV_USE_MONOTONIC
…		…
1078	{	1200	{
1079	if (time_update_monotonic (EV_A))	1201	if (time_update_monotonic (EV_A))
1080	{	1202	{
1081	ev_tstamp odiff = rtmn_diff;	1203	ev_tstamp odiff = rtmn_diff;
1082		1204
1083	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1205	/* loop a few times, before making important decisions.
		1206	* on the choice of "4": one iteration isn't enough,
		1207	* in case we get preempted during the calls to
		1208	* ev_time and get_clock. a second call is almost guarenteed
		1209	* to succeed in that case, though. and looping a few more times
		1210	* doesn't hurt either as we only do this on time-jumps or
		1211	* in the unlikely event of getting preempted here.
		1212	*/
		1213	for (i = 4; --i; )
1084	{	1214	{
1085	rtmn_diff = ev_rt_now - mn_now;	1215	rtmn_diff = ev_rt_now - mn_now;
1086		1216
1087	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1217	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1088	return; /* all is well */	1218	return; /* all is well */
…		…
1090	ev_rt_now = ev_time ();	1220	ev_rt_now = ev_time ();
1091	mn_now = get_clock ();	1221	mn_now = get_clock ();
1092	now_floor = mn_now;	1222	now_floor = mn_now;
1093	}	1223	}
1094		1224
		1225	# if EV_PERIODIC_ENABLE
1095	periodics_reschedule (EV_A);	1226	periodics_reschedule (EV_A);
		1227	# endif
1096	/* no timer adjustment, as the monotonic clock doesn't jump */	1228	/* no timer adjustment, as the monotonic clock doesn't jump */
1097	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1229	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1098	}	1230	}
1099	}	1231	}
1100	else	1232	else
…		…
1102	{	1234	{
1103	ev_rt_now = ev_time ();	1235	ev_rt_now = ev_time ();
1104		1236
1105	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1237	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1106	{	1238	{
		1239	#if EV_PERIODIC_ENABLE
1107	periodics_reschedule (EV_A);	1240	periodics_reschedule (EV_A);
		1241	#endif
1108		1242
1109	/* adjust timers. this is easy, as the offset is the same for all */	1243	/* adjust timers. this is easy, as the offset is the same for all */
1110	for (i = 0; i < timercnt; ++i)	1244	for (i = 0; i < timercnt; ++i)
1111	((WT)timers [i])->at += ev_rt_now - mn_now;	1245	((WT)timers [i])->at += ev_rt_now - mn_now;
1112	}	1246	}
…		…
1130	static int loop_done;	1264	static int loop_done;
1131		1265
1132	void	1266	void
1133	ev_loop (EV_P_ int flags)	1267	ev_loop (EV_P_ int flags)
1134	{	1268	{
1135	double block;
1136	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1269	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1270	? EVUNLOOP_ONE
		1271	: EVUNLOOP_CANCEL;
1137		1272
1138	do	1273	while (activecnt)
1139	{	1274	{
1140	/* queue check watchers (and execute them) */	1275	/* queue check watchers (and execute them) */
1141	if (expect_false (preparecnt))	1276	if (expect_false (preparecnt))
1142	{	1277	{
1143	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1278	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1150		1285
1151	/* update fd-related kernel structures */	1286	/* update fd-related kernel structures */
1152	fd_reify (EV_A);	1287	fd_reify (EV_A);
1153		1288
1154	/* calculate blocking time */	1289	/* calculate blocking time */
		1290	{
		1291	double block;
1155		1292
1156	/* we only need this for !monotonic clock or timers, but as we basically	1293	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1157	always have timers, we just calculate it always */	1294	block = 0.; /* do not block at all */
		1295	else
		1296	{
		1297	/* update time to cancel out callback processing overhead */
1158	#if EV_USE_MONOTONIC	1298	#if EV_USE_MONOTONIC
1159	if (expect_true (have_monotonic))	1299	if (expect_true (have_monotonic))
1160	time_update_monotonic (EV_A);	1300	time_update_monotonic (EV_A);
1161	else	1301	else
1162	#endif	1302	#endif
1163	{	1303	{
1164	ev_rt_now = ev_time ();	1304	ev_rt_now = ev_time ();
1165	mn_now = ev_rt_now;	1305	mn_now = ev_rt_now;
1166	}	1306	}
1167		1307
1168	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1169	block = 0.;
1170	else
1171	{
1172	block = MAX_BLOCKTIME;	1308	block = MAX_BLOCKTIME;
1173		1309
1174	if (timercnt)	1310	if (timercnt)
1175	{	1311	{
1176	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1312	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1177	if (block > to) block = to;	1313	if (block > to) block = to;
1178	}	1314	}
1179		1315
		1316	#if EV_PERIODIC_ENABLE
1180	if (periodiccnt)	1317	if (periodiccnt)
1181	{	1318	{
1182	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1319	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1183	if (block > to) block = to;	1320	if (block > to) block = to;
1184	}	1321	}
		1322	#endif
1185		1323
1186	if (block < 0.) block = 0.;	1324	if (expect_false (block < 0.)) block = 0.;
1187	}	1325	}
1188		1326
1189	method_poll (EV_A_ block);	1327	backend_poll (EV_A_ block);
		1328	}
1190		1329
1191	/* update ev_rt_now, do magic */	1330	/* update ev_rt_now, do magic */
1192	time_update (EV_A);	1331	time_update (EV_A);
1193		1332
1194	/* queue pending timers and reschedule them */	1333	/* queue pending timers and reschedule them */
1195	timers_reify (EV_A); /* relative timers called last */	1334	timers_reify (EV_A); /* relative timers called last */
		1335	#if EV_PERIODIC_ENABLE
1196	periodics_reify (EV_A); /* absolute timers called first */	1336	periodics_reify (EV_A); /* absolute timers called first */
		1337	#endif
1197		1338
1198	/* queue idle watchers unless io or timers are pending */	1339	/* queue idle watchers unless other events are pending */
1199	if (idlecnt && !any_pending (EV_A))	1340	if (idlecnt && !any_pending (EV_A))
1200	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1341	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1201		1342
1202	/* queue check watchers, to be executed first */	1343	/* queue check watchers, to be executed first */
1203	if (checkcnt)	1344	if (expect_false (checkcnt))
1204	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1345	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1205		1346
1206	call_pending (EV_A);	1347	call_pending (EV_A);
1207	}
1208	while (activecnt && !loop_done);
1209		1348
1210	if (loop_done != 2)	1349	if (expect_false (loop_done))
1211	loop_done = 0;	1350	break;
		1351	}
		1352
		1353	if (loop_done == EVUNLOOP_ONE)
		1354	loop_done = EVUNLOOP_CANCEL;
1212	}	1355	}
1213		1356
1214	void	1357	void
1215	ev_unloop (EV_P_ int how)	1358	ev_unloop (EV_P_ int how)
1216	{	1359	{
1217	loop_done = how;	1360	loop_done = how;
1218	}	1361	}
1219		1362
1220	/*****************************************************************************/	1363	/*****************************************************************************/
1221		1364
1222	inline void	1365	void inline_size
1223	wlist_add (WL *head, WL elem)	1366	wlist_add (WL *head, WL elem)
1224	{	1367	{
1225	elem->next = *head;	1368	elem->next = *head;
1226	*head = elem;	1369	*head = elem;
1227	}	1370	}
1228		1371
1229	inline void	1372	void inline_size
1230	wlist_del (WL *head, WL elem)	1373	wlist_del (WL *head, WL elem)
1231	{	1374	{
1232	while (*head)	1375	while (*head)
1233	{	1376	{
1234	if (*head == elem)	1377	if (*head == elem)
…		…
1239		1382
1240	head = &(*head)->next;	1383	head = &(*head)->next;
1241	}	1384	}
1242	}	1385	}
1243		1386
1244	inline void	1387	void inline_speed
1245	ev_clear_pending (EV_P_ W w)	1388	ev_clear_pending (EV_P_ W w)
1246	{	1389	{
1247	if (w->pending)	1390	if (w->pending)
1248	{	1391	{
1249	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1392	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1250	w->pending = 0;	1393	w->pending = 0;
1251	}	1394	}
1252	}	1395	}
1253		1396
1254	inline void	1397	void inline_speed
1255	ev_start (EV_P_ W w, int active)	1398	ev_start (EV_P_ W w, int active)
1256	{	1399	{
1257	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1400	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1258	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1401	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1259		1402
1260	w->active = active;	1403	w->active = active;
1261	ev_ref (EV_A);	1404	ev_ref (EV_A);
1262	}	1405	}
1263		1406
1264	inline void	1407	void inline_size
1265	ev_stop (EV_P_ W w)	1408	ev_stop (EV_P_ W w)
1266	{	1409	{
1267	ev_unref (EV_A);	1410	ev_unref (EV_A);
1268	w->active = 0;	1411	w->active = 0;
1269	}	1412	}
1270		1413
1271	/*****************************************************************************/	1414	/*****************************************************************************/
1272		1415
1273	void	1416	void
1274	ev_io_start (EV_P_ struct ev_io *w)	1417	ev_io_start (EV_P_ ev_io *w)
1275	{	1418	{
1276	int fd = w->fd;	1419	int fd = w->fd;
1277		1420
1278	if (ev_is_active (w))	1421	if (expect_false (ev_is_active (w)))
1279	return;	1422	return;
1280		1423
1281	assert (("ev_io_start called with negative fd", fd >= 0));	1424	assert (("ev_io_start called with negative fd", fd >= 0));
1282		1425
1283	ev_start (EV_A_ (W)w, 1);	1426	ev_start (EV_A_ (W)w, 1);
…		…
1286		1429
1287	fd_change (EV_A_ fd);	1430	fd_change (EV_A_ fd);
1288	}	1431	}
1289		1432
1290	void	1433	void
1291	ev_io_stop (EV_P_ struct ev_io *w)	1434	ev_io_stop (EV_P_ ev_io *w)
1292	{	1435	{
1293	ev_clear_pending (EV_A_ (W)w);	1436	ev_clear_pending (EV_A_ (W)w);
1294	if (!ev_is_active (w))	1437	if (expect_false (!ev_is_active (w)))
1295	return;	1438	return;
		1439
		1440	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1296		1441
1297	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1442	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1298	ev_stop (EV_A_ (W)w);	1443	ev_stop (EV_A_ (W)w);
1299		1444
1300	fd_change (EV_A_ w->fd);	1445	fd_change (EV_A_ w->fd);
1301	}	1446	}
1302		1447
1303	void	1448	void
1304	ev_timer_start (EV_P_ struct ev_timer *w)	1449	ev_timer_start (EV_P_ ev_timer *w)
1305	{	1450	{
1306	if (ev_is_active (w))	1451	if (expect_false (ev_is_active (w)))
1307	return;	1452	return;
1308		1453
1309	((WT)w)->at += mn_now;	1454	((WT)w)->at += mn_now;
1310		1455
1311	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1456	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1312		1457
1313	ev_start (EV_A_ (W)w, ++timercnt);	1458	ev_start (EV_A_ (W)w, ++timercnt);
1314	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1459	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1315	timers [timercnt - 1] = w;	1460	timers [timercnt - 1] = w;
1316	upheap ((WT *)timers, timercnt - 1);	1461	upheap ((WT *)timers, timercnt - 1);
1317		1462
1318	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1463	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1319	}	1464	}
1320		1465
1321	void	1466	void
1322	ev_timer_stop (EV_P_ struct ev_timer *w)	1467	ev_timer_stop (EV_P_ ev_timer *w)
1323	{	1468	{
1324	ev_clear_pending (EV_A_ (W)w);	1469	ev_clear_pending (EV_A_ (W)w);
1325	if (!ev_is_active (w))	1470	if (expect_false (!ev_is_active (w)))
1326	return;	1471	return;
1327		1472
1328	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1473	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1329		1474
1330	if (((W)w)->active < timercnt--)	1475	if (expect_true (((W)w)->active < timercnt--))
1331	{	1476	{
1332	timers [((W)w)->active - 1] = timers [timercnt];	1477	timers [((W)w)->active - 1] = timers [timercnt];
1333	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1478	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1334	}	1479	}
1335		1480
1336	((WT)w)->at = w->repeat;	1481	((WT)w)->at -= mn_now;
1337		1482
1338	ev_stop (EV_A_ (W)w);	1483	ev_stop (EV_A_ (W)w);
1339	}	1484	}
1340		1485
1341	void	1486	void
1342	ev_timer_again (EV_P_ struct ev_timer *w)	1487	ev_timer_again (EV_P_ ev_timer *w)
1343	{	1488	{
1344	if (ev_is_active (w))	1489	if (ev_is_active (w))
1345	{	1490	{
1346	if (w->repeat)	1491	if (w->repeat)
		1492	{
		1493	((WT)w)->at = mn_now + w->repeat;
1347	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1494	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
		1495	}
1348	else	1496	else
1349	ev_timer_stop (EV_A_ w);	1497	ev_timer_stop (EV_A_ w);
1350	}	1498	}
1351	else if (w->repeat)	1499	else if (w->repeat)
		1500	{
		1501	w->at = w->repeat;
1352	ev_timer_start (EV_A_ w);	1502	ev_timer_start (EV_A_ w);
		1503	}
1353	}	1504	}
1354		1505
		1506	#if EV_PERIODIC_ENABLE
1355	void	1507	void
1356	ev_periodic_start (EV_P_ struct ev_periodic *w)	1508	ev_periodic_start (EV_P_ ev_periodic *w)
1357	{	1509	{
1358	if (ev_is_active (w))	1510	if (expect_false (ev_is_active (w)))
1359	return;	1511	return;
1360		1512
1361	if (w->reschedule_cb)	1513	if (w->reschedule_cb)
1362	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1514	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1363	else if (w->interval)	1515	else if (w->interval)
…		…
1366	/* this formula differs from the one in periodic_reify because we do not always round up */	1518	/* this formula differs from the one in periodic_reify because we do not always round up */
1367	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1519	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1368	}	1520	}
1369		1521
1370	ev_start (EV_A_ (W)w, ++periodiccnt);	1522	ev_start (EV_A_ (W)w, ++periodiccnt);
1371	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1523	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1372	periodics [periodiccnt - 1] = w;	1524	periodics [periodiccnt - 1] = w;
1373	upheap ((WT *)periodics, periodiccnt - 1);	1525	upheap ((WT *)periodics, periodiccnt - 1);
1374		1526
1375	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1527	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1376	}	1528	}
1377		1529
1378	void	1530	void
1379	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1531	ev_periodic_stop (EV_P_ ev_periodic *w)
1380	{	1532	{
1381	ev_clear_pending (EV_A_ (W)w);	1533	ev_clear_pending (EV_A_ (W)w);
1382	if (!ev_is_active (w))	1534	if (expect_false (!ev_is_active (w)))
1383	return;	1535	return;
1384		1536
1385	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1537	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1386		1538
1387	if (((W)w)->active < periodiccnt--)	1539	if (expect_true (((W)w)->active < periodiccnt--))
1388	{	1540	{
1389	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1541	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1390	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1542	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1391	}	1543	}
1392		1544
1393	ev_stop (EV_A_ (W)w);	1545	ev_stop (EV_A_ (W)w);
1394	}	1546	}
1395		1547
1396	void	1548	void
1397	ev_periodic_again (EV_P_ struct ev_periodic *w)	1549	ev_periodic_again (EV_P_ ev_periodic *w)
1398	{	1550	{
1399	/* TODO: use adjustheap and recalculation */	1551	/* TODO: use adjustheap and recalculation */
1400	ev_periodic_stop (EV_A_ w);	1552	ev_periodic_stop (EV_A_ w);
1401	ev_periodic_start (EV_A_ w);	1553	ev_periodic_start (EV_A_ w);
1402	}	1554	}
		1555	#endif
1403		1556
1404	void	1557	void
1405	ev_idle_start (EV_P_ struct ev_idle *w)	1558	ev_idle_start (EV_P_ ev_idle *w)
1406	{	1559	{
1407	if (ev_is_active (w))	1560	if (expect_false (ev_is_active (w)))
1408	return;	1561	return;
1409		1562
1410	ev_start (EV_A_ (W)w, ++idlecnt);	1563	ev_start (EV_A_ (W)w, ++idlecnt);
1411	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));	1564	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1412	idles [idlecnt - 1] = w;	1565	idles [idlecnt - 1] = w;
1413	}	1566	}
1414		1567
1415	void	1568	void
1416	ev_idle_stop (EV_P_ struct ev_idle *w)	1569	ev_idle_stop (EV_P_ ev_idle *w)
1417	{	1570	{
1418	ev_clear_pending (EV_A_ (W)w);	1571	ev_clear_pending (EV_A_ (W)w);
1419	if (ev_is_active (w))	1572	if (expect_false (!ev_is_active (w)))
1420	return;	1573	return;
1421		1574
		1575	{
		1576	int active = ((W)w)->active;
1422	idles [((W)w)->active - 1] = idles [--idlecnt];	1577	idles [active - 1] = idles [--idlecnt];
		1578	((W)idles [active - 1])->active = active;
		1579	}
		1580
1423	ev_stop (EV_A_ (W)w);	1581	ev_stop (EV_A_ (W)w);
1424	}	1582	}
1425		1583
1426	void	1584	void
1427	ev_prepare_start (EV_P_ struct ev_prepare *w)	1585	ev_prepare_start (EV_P_ ev_prepare *w)
1428	{	1586	{
1429	if (ev_is_active (w))	1587	if (expect_false (ev_is_active (w)))
1430	return;	1588	return;
1431		1589
1432	ev_start (EV_A_ (W)w, ++preparecnt);	1590	ev_start (EV_A_ (W)w, ++preparecnt);
1433	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));	1591	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1434	prepares [preparecnt - 1] = w;	1592	prepares [preparecnt - 1] = w;
1435	}	1593	}
1436		1594
1437	void	1595	void
1438	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1596	ev_prepare_stop (EV_P_ ev_prepare *w)
1439	{	1597	{
1440	ev_clear_pending (EV_A_ (W)w);	1598	ev_clear_pending (EV_A_ (W)w);
1441	if (ev_is_active (w))	1599	if (expect_false (!ev_is_active (w)))
1442	return;	1600	return;
1443		1601
		1602	{
		1603	int active = ((W)w)->active;
1444	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1604	prepares [active - 1] = prepares [--preparecnt];
		1605	((W)prepares [active - 1])->active = active;
		1606	}
		1607
1445	ev_stop (EV_A_ (W)w);	1608	ev_stop (EV_A_ (W)w);
1446	}	1609	}
1447		1610
1448	void	1611	void
1449	ev_check_start (EV_P_ struct ev_check *w)	1612	ev_check_start (EV_P_ ev_check *w)
1450	{	1613	{
1451	if (ev_is_active (w))	1614	if (expect_false (ev_is_active (w)))
1452	return;	1615	return;
1453		1616
1454	ev_start (EV_A_ (W)w, ++checkcnt);	1617	ev_start (EV_A_ (W)w, ++checkcnt);
1455	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));	1618	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1456	checks [checkcnt - 1] = w;	1619	checks [checkcnt - 1] = w;
1457	}	1620	}
1458		1621
1459	void	1622	void
1460	ev_check_stop (EV_P_ struct ev_check *w)	1623	ev_check_stop (EV_P_ ev_check *w)
1461	{	1624	{
1462	ev_clear_pending (EV_A_ (W)w);	1625	ev_clear_pending (EV_A_ (W)w);
1463	if (ev_is_active (w))	1626	if (expect_false (!ev_is_active (w)))
1464	return;	1627	return;
1465		1628
		1629	{
		1630	int active = ((W)w)->active;
1466	checks [((W)w)->active - 1] = checks [--checkcnt];	1631	checks [active - 1] = checks [--checkcnt];
		1632	((W)checks [active - 1])->active = active;
		1633	}
		1634
1467	ev_stop (EV_A_ (W)w);	1635	ev_stop (EV_A_ (W)w);
1468	}	1636	}
1469		1637
1470	#ifndef SA_RESTART	1638	#ifndef SA_RESTART
1471	# define SA_RESTART 0	1639	# define SA_RESTART 0
1472	#endif	1640	#endif
1473		1641
1474	void	1642	void
1475	ev_signal_start (EV_P_ struct ev_signal *w)	1643	ev_signal_start (EV_P_ ev_signal *w)
1476	{	1644	{
1477	#if EV_MULTIPLICITY	1645	#if EV_MULTIPLICITY
1478	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1646	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1479	#endif	1647	#endif
1480	if (ev_is_active (w))	1648	if (expect_false (ev_is_active (w)))
1481	return;	1649	return;
1482		1650
1483	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1651	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1484		1652
1485	ev_start (EV_A_ (W)w, 1);	1653	ev_start (EV_A_ (W)w, 1);
1486	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1654	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1487	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1655	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1488		1656
1489	if (!((WL)w)->next)	1657	if (!((WL)w)->next)
1490	{	1658	{
1491	#if WIN32	1659	#if _WIN32
1492	signal (w->signum, sighandler);	1660	signal (w->signum, sighandler);
1493	#else	1661	#else
1494	struct sigaction sa;	1662	struct sigaction sa;
1495	sa.sa_handler = sighandler;	1663	sa.sa_handler = sighandler;
1496	sigfillset (&sa.sa_mask);	1664	sigfillset (&sa.sa_mask);
…		…
1499	#endif	1667	#endif
1500	}	1668	}
1501	}	1669	}
1502		1670
1503	void	1671	void
1504	ev_signal_stop (EV_P_ struct ev_signal *w)	1672	ev_signal_stop (EV_P_ ev_signal *w)
1505	{	1673	{
1506	ev_clear_pending (EV_A_ (W)w);	1674	ev_clear_pending (EV_A_ (W)w);
1507	if (!ev_is_active (w))	1675	if (expect_false (!ev_is_active (w)))
1508	return;	1676	return;
1509		1677
1510	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1678	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1511	ev_stop (EV_A_ (W)w);	1679	ev_stop (EV_A_ (W)w);
1512		1680
1513	if (!signals [w->signum - 1].head)	1681	if (!signals [w->signum - 1].head)
1514	signal (w->signum, SIG_DFL);	1682	signal (w->signum, SIG_DFL);
1515	}	1683	}
1516		1684
1517	void	1685	void
1518	ev_child_start (EV_P_ struct ev_child *w)	1686	ev_child_start (EV_P_ ev_child *w)
1519	{	1687	{
1520	#if EV_MULTIPLICITY	1688	#if EV_MULTIPLICITY
1521	assert (("child watchers are only supported in the default loop", loop == default_loop));	1689	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1522	#endif	1690	#endif
1523	if (ev_is_active (w))	1691	if (expect_false (ev_is_active (w)))
1524	return;	1692	return;
1525		1693
1526	ev_start (EV_A_ (W)w, 1);	1694	ev_start (EV_A_ (W)w, 1);
1527	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1695	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1528	}	1696	}
1529		1697
1530	void	1698	void
1531	ev_child_stop (EV_P_ struct ev_child *w)	1699	ev_child_stop (EV_P_ ev_child *w)
1532	{	1700	{
1533	ev_clear_pending (EV_A_ (W)w);	1701	ev_clear_pending (EV_A_ (W)w);
1534	if (ev_is_active (w))	1702	if (expect_false (!ev_is_active (w)))
1535	return;	1703	return;
1536		1704
1537	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1705	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1538	ev_stop (EV_A_ (W)w);	1706	ev_stop (EV_A_ (W)w);
1539	}	1707	}
1540		1708
		1709	#if EV_EMBED_ENABLE
		1710	void noinline
		1711	ev_embed_sweep (EV_P_ ev_embed *w)
		1712	{
		1713	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1714	}
		1715
		1716	static void
		1717	embed_cb (EV_P_ ev_io *io, int revents)
		1718	{
		1719	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
		1720
		1721	if (ev_cb (w))
		1722	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1723	else
		1724	ev_embed_sweep (loop, w);
		1725	}
		1726
		1727	void
		1728	ev_embed_start (EV_P_ ev_embed *w)
		1729	{
		1730	if (expect_false (ev_is_active (w)))
		1731	return;
		1732
		1733	{
		1734	struct ev_loop *loop = w->loop;
		1735	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1736	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1737	}
		1738
		1739	ev_set_priority (&w->io, ev_priority (w));
		1740	ev_io_start (EV_A_ &w->io);
		1741
		1742	ev_start (EV_A_ (W)w, 1);
		1743	}
		1744
		1745	void
		1746	ev_embed_stop (EV_P_ ev_embed *w)
		1747	{
		1748	ev_clear_pending (EV_A_ (W)w);
		1749	if (expect_false (!ev_is_active (w)))
		1750	return;
		1751
		1752	ev_io_stop (EV_A_ &w->io);
		1753
		1754	ev_stop (EV_A_ (W)w);
		1755	}
		1756	#endif
		1757
		1758	#if EV_STAT_ENABLE
		1759
		1760	# ifdef _WIN32
		1761	# define lstat(a,b) stat(a,b)
		1762	# endif
		1763
		1764	void
		1765	ev_stat_stat (EV_P_ ev_stat *w)
		1766	{
		1767	if (lstat (w->path, &w->attr) < 0)
		1768	w->attr.st_nlink = 0;
		1769	else if (!w->attr.st_nlink)
		1770	w->attr.st_nlink = 1;
		1771	}
		1772
		1773	static void
		1774	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1775	{
		1776	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
		1777
		1778	/* we copy this here each the time so that */
		1779	/* prev has the old value when the callback gets invoked */
		1780	w->prev = w->attr;
		1781	ev_stat_stat (EV_A_ w);
		1782
		1783	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1784	ev_feed_event (EV_A_ w, EV_STAT);
		1785	}
		1786
		1787	void
		1788	ev_stat_start (EV_P_ ev_stat *w)
		1789	{
		1790	if (expect_false (ev_is_active (w)))
		1791	return;
		1792
		1793	/* since we use memcmp, we need to clear any padding data etc. */
		1794	memset (&w->prev, 0, sizeof (ev_statdata));
		1795	memset (&w->attr, 0, sizeof (ev_statdata));
		1796
		1797	ev_stat_stat (EV_A_ w);
		1798
		1799	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1800	ev_set_priority (&w->timer, ev_priority (w));
		1801	ev_timer_start (EV_A_ &w->timer);
		1802
		1803	ev_start (EV_A_ (W)w, 1);
		1804	}
		1805
		1806	void
		1807	ev_stat_stop (EV_P_ ev_stat *w)
		1808	{
		1809	ev_clear_pending (EV_A_ (W)w);
		1810	if (expect_false (!ev_is_active (w)))
		1811	return;
		1812
		1813	ev_timer_stop (EV_A_ &w->timer);
		1814
		1815	ev_stop (EV_A_ (W)w);
		1816	}
		1817	#endif
		1818
1541	/*****************************************************************************/	1819	/*****************************************************************************/
1542		1820
1543	struct ev_once	1821	struct ev_once
1544	{	1822	{
1545	struct ev_io io;	1823	ev_io io;
1546	struct ev_timer to;	1824	ev_timer to;
1547	void (cb)(int revents, void arg);	1825	void (cb)(int revents, void arg);
1548	void *arg;	1826	void *arg;
1549	};	1827	};
1550		1828
1551	static void	1829	static void
…		…
1560		1838
1561	cb (revents, arg);	1839	cb (revents, arg);
1562	}	1840	}
1563		1841
1564	static void	1842	static void
1565	once_cb_io (EV_P_ struct ev_io *w, int revents)	1843	once_cb_io (EV_P_ ev_io *w, int revents)
1566	{	1844	{
1567	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1845	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1568	}	1846	}
1569		1847
1570	static void	1848	static void
1571	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1849	once_cb_to (EV_P_ ev_timer *w, int revents)
1572	{	1850	{
1573	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1851	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1574	}	1852	}
1575		1853
1576	void	1854	void
1577	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1855	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1578	{	1856	{
1579	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));	1857	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1580		1858
1581	if (!once)	1859	if (expect_false (!once))
		1860	{
1582	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1861	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1583	else	1862	return;
1584	{	1863	}
		1864
1585	once->cb = cb;	1865	once->cb = cb;
1586	once->arg = arg;	1866	once->arg = arg;
1587		1867
1588	ev_init (&once->io, once_cb_io);	1868	ev_init (&once->io, once_cb_io);
1589	if (fd >= 0)	1869	if (fd >= 0)
1590	{	1870	{
1591	ev_io_set (&once->io, fd, events);	1871	ev_io_set (&once->io, fd, events);
1592	ev_io_start (EV_A_ &once->io);	1872	ev_io_start (EV_A_ &once->io);
1593	}	1873	}
1594		1874
1595	ev_init (&once->to, once_cb_to);	1875	ev_init (&once->to, once_cb_to);
1596	if (timeout >= 0.)	1876	if (timeout >= 0.)
1597	{	1877	{
1598	ev_timer_set (&once->to, timeout, 0.);	1878	ev_timer_set (&once->to, timeout, 0.);
1599	ev_timer_start (EV_A_ &once->to);	1879	ev_timer_start (EV_A_ &once->to);
1600	}
1601	}	1880	}
1602	}	1881	}
1603		1882
1604	#ifdef __cplusplus	1883	#ifdef __cplusplus
1605	}	1884	}

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Comparing libev/ev.c (file contents): Revision 1.88 by root, Sat Nov 10 04:40:27 2007 UTC vs. Revision 1.140 by root, Mon Nov 26 19:49:36 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.88 by root, Sat Nov 10 04:40:27 2007 UTC vs.
Revision 1.140 by root, Mon Nov 26 19:49:36 2007 UTC