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Comparing libev/ev.c (file contents):
Revision 1.99 by root, Sun Nov 11 02:26:47 2007 UTC vs.
Revision 1.149 by root, Tue Nov 27 19:23:31 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
43	# ifndef EV_USE_REALTIME	47	# ifndef EV_USE_REALTIME
44	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
45	# endif	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
46	# endif	57	# endif
47		58
48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)	59	# ifndef EV_USE_SELECT
		60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
49	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
50	# endif	65	# endif
51		66
52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)	67	# ifndef EV_USE_POLL
		68	# if HAVE_POLL && HAVE_POLL_H
53	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
54	# endif	73	# endif
55		74
56	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)	75	# ifndef EV_USE_EPOLL
		76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
57	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
58	# endif	81	# endif
59		82
		83	# ifndef EV_USE_KQUEUE
60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
61	# 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
62	# endif	97	# endif
63		98
64	#endif	99	#endif
65		100
66	#include <math.h>	101	#include <math.h>
…		…
75	#include <sys/types.h>	110	#include <sys/types.h>
76	#include <time.h>	111	#include <time.h>
77		112
78	#include <signal.h>	113	#include <signal.h>
79		114
80	#ifndef WIN32	115	#ifndef _WIN32
81	# include <unistd.h>
82	# include <sys/time.h>	116	# include <sys/time.h>
83	# 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
84	#endif	124	# endif
		125	#endif
		126
85	/**/	127	/**/
86		128
87	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
88	# 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
89	#endif	135	#endif
90		136
91	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
92	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
93	#endif	139	#endif
94		140
95	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
96	# 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
97	#endif	147	#endif
98		148
99	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
100	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
101	#endif	151	#endif
102		152
103	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
104	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
105	#endif	155	#endif
106		156
107	#ifndef EV_USE_WIN32	157	#ifndef EV_USE_PORT
108	# ifdef WIN32
109	# define EV_USE_WIN32 0 /* it does not exist, use select */
110	# undef EV_USE_SELECT
111	# define EV_USE_SELECT 1	158	# define EV_USE_PORT 0
		159	#endif
		160
		161	#ifndef EV_PID_HASHSIZE
		162	# if EV_MINIMAL
		163	# define EV_PID_HASHSIZE 1
112	# else	164	# else
113	# define EV_USE_WIN32 0	165	# define EV_PID_HASHSIZE 16
114	# endif	166	# endif
115	#endif
116
117	#ifndef EV_USE_REALTIME
118	# define EV_USE_REALTIME 1
119	#endif	167	#endif
120		168
121	/**/	169	/**/
122		170
123	#ifndef CLOCK_MONOTONIC	171	#ifndef CLOCK_MONOTONIC
…		…
128	#ifndef CLOCK_REALTIME	176	#ifndef CLOCK_REALTIME
129	# undef EV_USE_REALTIME	177	# undef EV_USE_REALTIME
130	# define EV_USE_REALTIME 0	178	# define EV_USE_REALTIME 0
131	#endif	179	#endif
132		180
		181	#if EV_SELECT_IS_WINSOCKET
		182	# include <winsock.h>
		183	#endif
		184
133	/**/	185	/**/
134		186
135	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	187	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
136	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	188	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
137	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
138	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	189	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
139		190
140	#ifdef EV_H	191	#ifdef EV_H
141	# include EV_H	192	# include EV_H
142	#else	193	#else
143	# include "ev.h"	194	# include "ev.h"
144	#endif	195	#endif
145		196
146	#if __GNUC__ >= 3	197	#if __GNUC__ >= 3
147	# define expect(expr,value) __builtin_expect ((expr),(value))	198	# define expect(expr,value) __builtin_expect ((expr),(value))
		199	# define inline_size static inline /* inline for codesize */
		200	# if EV_MINIMAL
148	# define inline inline	201	# define noinline __attribute__ ((noinline))
		202	# define inline_speed static noinline
		203	# else
		204	# define noinline
		205	# define inline_speed static inline
		206	# endif
149	#else	207	#else
150	# define expect(expr,value) (expr)	208	# define expect(expr,value) (expr)
		209	# define inline_speed static
151	# define inline static	210	# define inline_size static
		211	# define noinline
152	#endif	212	#endif
153		213
154	#define expect_false(expr) expect ((expr) != 0, 0)	214	#define expect_false(expr) expect ((expr) != 0, 0)
155	#define expect_true(expr) expect ((expr) != 0, 1)	215	#define expect_true(expr) expect ((expr) != 0, 1)
156		216
157	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	217	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
158	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	218	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
159		219
		220	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		221	#define EMPTY2(a,b) /* used to suppress some warnings */
		222
160	typedef struct ev_watcher *W;	223	typedef ev_watcher *W;
161	typedef struct ev_watcher_list *WL;	224	typedef ev_watcher_list *WL;
162	typedef struct ev_watcher_time *WT;	225	typedef ev_watcher_time *WT;
163		226
164	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	227	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
165		228
166	#ifdef WIN32	229	#ifdef _WIN32
167	# include "ev_win32.c"	230	# include "ev_win32.c"
168	#endif	231	#endif
169		232
170	/*****************************************************************************/	233	/*****************************************************************************/
171		234
172	static void (*syserr_cb)(const char *msg);	235	static void (*syserr_cb)(const char *msg);
173		236
		237	void
174	void ev_set_syserr_cb (void (*cb)(const char *msg))	238	ev_set_syserr_cb (void (*cb)(const char *msg))
175	{	239	{
176	syserr_cb = cb;	240	syserr_cb = cb;
177	}	241	}
178		242
179	static void	243	static void noinline
180	syserr (const char *msg)	244	syserr (const char *msg)
181	{	245	{
182	if (!msg)	246	if (!msg)
183	msg = "(libev) system error";	247	msg = "(libev) system error";
184		248
…		…
191	}	255	}
192	}	256	}
193		257
194	static void *(*alloc)(void *ptr, long size);	258	static void *(*alloc)(void *ptr, long size);
195		259
		260	void
196	void ev_set_allocator (void *(*cb)(void *ptr, long size))	261	ev_set_allocator (void *(*cb)(void *ptr, long size))
197	{	262	{
198	alloc = cb;	263	alloc = cb;
199	}	264	}
200		265
201	static void *	266	static void *
…		…
220	typedef struct	285	typedef struct
221	{	286	{
222	WL head;	287	WL head;
223	unsigned char events;	288	unsigned char events;
224	unsigned char reify;	289	unsigned char reify;
		290	#if EV_SELECT_IS_WINSOCKET
		291	SOCKET handle;
		292	#endif
225	} ANFD;	293	} ANFD;
226		294
227	typedef struct	295	typedef struct
228	{	296	{
229	W w;	297	W w;
…		…
240	#include "ev_vars.h"	308	#include "ev_vars.h"
241	#undef VAR	309	#undef VAR
242	};	310	};
243	#include "ev_wrap.h"	311	#include "ev_wrap.h"
244		312
245	struct ev_loop default_loop_struct;	313	static struct ev_loop default_loop_struct;
246	static struct ev_loop *default_loop;	314	struct ev_loop *ev_default_loop_ptr;
247		315
248	#else	316	#else
249		317
250	ev_tstamp ev_rt_now;	318	ev_tstamp ev_rt_now;
251	#define VAR(name,decl) static decl;	319	#define VAR(name,decl) static decl;
252	#include "ev_vars.h"	320	#include "ev_vars.h"
253	#undef VAR	321	#undef VAR
254		322
255	static int default_loop;	323	static int ev_default_loop_ptr;
256		324
257	#endif	325	#endif
258		326
259	/*****************************************************************************/	327	/*****************************************************************************/
260		328
…		…
270	gettimeofday (&tv, 0);	338	gettimeofday (&tv, 0);
271	return tv.tv_sec + tv.tv_usec * 1e-6;	339	return tv.tv_sec + tv.tv_usec * 1e-6;
272	#endif	340	#endif
273	}	341	}
274		342
275	inline ev_tstamp	343	ev_tstamp inline_size
276	get_clock (void)	344	get_clock (void)
277	{	345	{
278	#if EV_USE_MONOTONIC	346	#if EV_USE_MONOTONIC
279	if (expect_true (have_monotonic))	347	if (expect_true (have_monotonic))
280	{	348	{
…		…
293	{	361	{
294	return ev_rt_now;	362	return ev_rt_now;
295	}	363	}
296	#endif	364	#endif
297		365
298	#define array_roundsize(type,n) ((n) | 4 & ~3)	366	#define array_roundsize(type,n) (((n) | 4) & ~3)
299		367
300	#define array_needsize(type,base,cur,cnt,init) \	368	#define array_needsize(type,base,cur,cnt,init) \
301	if (expect_false ((cnt) > cur)) \	369	if (expect_false ((cnt) > cur)) \
302	{ \	370	{ \
303	int newcnt = cur; \	371	int newcnt = cur; \
…		…
318	stem ## max = array_roundsize (stem ## cnt >> 1); \	386	stem ## max = array_roundsize (stem ## cnt >> 1); \
319	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	387	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
320	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	388	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
321	}	389	}
322		390
323	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
324	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
325	#define array_free_microshit(stem) \
326	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
327
328	#define array_free(stem, idx) \	391	#define array_free(stem, idx) \
329	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	392	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
330		393
331	/*****************************************************************************/	394	/*****************************************************************************/
332		395
333	static void	396	void noinline
		397	ev_feed_event (EV_P_ void *w, int revents)
		398	{
		399	W w_ = (W)w;
		400
		401	if (expect_false (w_->pending))
		402	{
		403	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		404	return;
		405	}
		406
		407	w_->pending = ++pendingcnt [ABSPRI (w_)];
		408	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		409	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		410	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		411	}
		412
		413	void inline_size
		414	queue_events (EV_P_ W *events, int eventcnt, int type)
		415	{
		416	int i;
		417
		418	for (i = 0; i < eventcnt; ++i)
		419	ev_feed_event (EV_A_ events [i], type);
		420	}
		421
		422	/*****************************************************************************/
		423
		424	void inline_size
334	anfds_init (ANFD *base, int count)	425	anfds_init (ANFD *base, int count)
335	{	426	{
336	while (count--)	427	while (count--)
337	{	428	{
338	base->head = 0;	429	base->head = 0;
…		…
341		432
342	++base;	433	++base;
343	}	434	}
344	}	435	}
345		436
346	void	437	void inline_speed
347	ev_feed_event (EV_P_ void *w, int revents)
348	{
349	W w_ = (W)w;
350
351	if (w_->pending)
352	{
353	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
354	return;
355	}
356
357	w_->pending = ++pendingcnt [ABSPRI (w_)];
358	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
359	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
360	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
361	}
362
363	static void
364	queue_events (EV_P_ W *events, int eventcnt, int type)
365	{
366	int i;
367
368	for (i = 0; i < eventcnt; ++i)
369	ev_feed_event (EV_A_ events [i], type);
370	}
371
372	inline void
373	fd_event (EV_P_ int fd, int revents)	438	fd_event (EV_P_ int fd, int revents)
374	{	439	{
375	ANFD *anfd = anfds + fd;	440	ANFD *anfd = anfds + fd;
376	struct ev_io *w;	441	ev_io *w;
377		442
378	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	443	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
379	{	444	{
380	int ev = w->events & revents;	445	int ev = w->events & revents;
381		446
382	if (ev)	447	if (ev)
383	ev_feed_event (EV_A_ (W)w, ev);	448	ev_feed_event (EV_A_ (W)w, ev);
…		…
388	ev_feed_fd_event (EV_P_ int fd, int revents)	453	ev_feed_fd_event (EV_P_ int fd, int revents)
389	{	454	{
390	fd_event (EV_A_ fd, revents);	455	fd_event (EV_A_ fd, revents);
391	}	456	}
392		457
393	/*****************************************************************************/	458	void inline_size
394
395	static void
396	fd_reify (EV_P)	459	fd_reify (EV_P)
397	{	460	{
398	int i;	461	int i;
399		462
400	for (i = 0; i < fdchangecnt; ++i)	463	for (i = 0; i < fdchangecnt; ++i)
401	{	464	{
402	int fd = fdchanges [i];	465	int fd = fdchanges [i];
403	ANFD *anfd = anfds + fd;	466	ANFD *anfd = anfds + fd;
404	struct ev_io *w;	467	ev_io *w;
405		468
406	int events = 0;	469	int events = 0;
407		470
408	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	471	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
409	events |= w->events;	472	events |= w->events;
410		473
		474	#if EV_SELECT_IS_WINSOCKET
		475	if (events)
		476	{
		477	unsigned long argp;
		478	anfd->handle = _get_osfhandle (fd);
		479	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		480	}
		481	#endif
		482
411	anfd->reify = 0;	483	anfd->reify = 0;
412		484
413	method_modify (EV_A_ fd, anfd->events, events);	485	backend_modify (EV_A_ fd, anfd->events, events);
414	anfd->events = events;	486	anfd->events = events;
415	}	487	}
416		488
417	fdchangecnt = 0;	489	fdchangecnt = 0;
418	}	490	}
419		491
420	static void	492	void inline_size
421	fd_change (EV_P_ int fd)	493	fd_change (EV_P_ int fd)
422	{	494	{
423	if (anfds [fd].reify)	495	if (expect_false (anfds [fd].reify))
424	return;	496	return;
425		497
426	anfds [fd].reify = 1;	498	anfds [fd].reify = 1;
427		499
428	++fdchangecnt;	500	++fdchangecnt;
429	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	501	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
430	fdchanges [fdchangecnt - 1] = fd;	502	fdchanges [fdchangecnt - 1] = fd;
431	}	503	}
432		504
433	static void	505	void inline_speed
434	fd_kill (EV_P_ int fd)	506	fd_kill (EV_P_ int fd)
435	{	507	{
436	struct ev_io *w;	508	ev_io *w;
437		509
438	while ((w = (struct ev_io *)anfds [fd].head))	510	while ((w = (ev_io *)anfds [fd].head))
439	{	511	{
440	ev_io_stop (EV_A_ w);	512	ev_io_stop (EV_A_ w);
441	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	513	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
442	}	514	}
443	}	515	}
444		516
445	static int	517	int inline_size
446	fd_valid (int fd)	518	fd_valid (int fd)
447	{	519	{
448	#ifdef WIN32	520	#ifdef _WIN32
449	return !!win32_get_osfhandle (fd);	521	return _get_osfhandle (fd) != -1;
450	#else	522	#else
451	return fcntl (fd, F_GETFD) != -1;	523	return fcntl (fd, F_GETFD) != -1;
452	#endif	524	#endif
453	}	525	}
454		526
455	/* called on EBADF to verify fds */	527	/* called on EBADF to verify fds */
456	static void	528	static void noinline
457	fd_ebadf (EV_P)	529	fd_ebadf (EV_P)
458	{	530	{
459	int fd;	531	int fd;
460		532
461	for (fd = 0; fd < anfdmax; ++fd)	533	for (fd = 0; fd < anfdmax; ++fd)
…		…
463	if (!fd_valid (fd) == -1 && errno == EBADF)	535	if (!fd_valid (fd) == -1 && errno == EBADF)
464	fd_kill (EV_A_ fd);	536	fd_kill (EV_A_ fd);
465	}	537	}
466		538
467	/* called on ENOMEM in select/poll to kill some fds and retry */	539	/* called on ENOMEM in select/poll to kill some fds and retry */
468	static void	540	static void noinline
469	fd_enomem (EV_P)	541	fd_enomem (EV_P)
470	{	542	{
471	int fd;	543	int fd;
472		544
473	for (fd = anfdmax; fd--; )	545	for (fd = anfdmax; fd--; )
…		…
476	fd_kill (EV_A_ fd);	548	fd_kill (EV_A_ fd);
477	return;	549	return;
478	}	550	}
479	}	551	}
480		552
481	/* usually called after fork if method needs to re-arm all fds from scratch */	553	/* usually called after fork if backend needs to re-arm all fds from scratch */
482	static void	554	static void noinline
483	fd_rearm_all (EV_P)	555	fd_rearm_all (EV_P)
484	{	556	{
485	int fd;	557	int fd;
486		558
487	/* this should be highly optimised to not do anything but set a flag */	559	/* this should be highly optimised to not do anything but set a flag */
…		…
493	}	565	}
494	}	566	}
495		567
496	/*****************************************************************************/	568	/*****************************************************************************/
497		569
498	static void	570	void inline_speed
499	upheap (WT *heap, int k)	571	upheap (WT *heap, int k)
500	{	572	{
501	WT w = heap [k];	573	WT w = heap [k];
502		574
503	while (k && heap [k >> 1]->at > w->at)	575	while (k && heap [k >> 1]->at > w->at)
…		…
510	heap [k] = w;	582	heap [k] = w;
511	((W)heap [k])->active = k + 1;	583	((W)heap [k])->active = k + 1;
512		584
513	}	585	}
514		586
515	static void	587	void inline_speed
516	downheap (WT *heap, int N, int k)	588	downheap (WT *heap, int N, int k)
517	{	589	{
518	WT w = heap [k];	590	WT w = heap [k];
519		591
520	while (k < (N >> 1))	592	while (k < (N >> 1))
…		…
534		606
535	heap [k] = w;	607	heap [k] = w;
536	((W)heap [k])->active = k + 1;	608	((W)heap [k])->active = k + 1;
537	}	609	}
538		610
539	inline void	611	void inline_size
540	adjustheap (WT *heap, int N, int k)	612	adjustheap (WT *heap, int N, int k)
541	{	613	{
542	upheap (heap, k);	614	upheap (heap, k);
543	downheap (heap, N, k);	615	downheap (heap, N, k);
544	}	616	}
…		…
554	static ANSIG *signals;	626	static ANSIG *signals;
555	static int signalmax;	627	static int signalmax;
556		628
557	static int sigpipe [2];	629	static int sigpipe [2];
558	static sig_atomic_t volatile gotsig;	630	static sig_atomic_t volatile gotsig;
559	static struct ev_io sigev;	631	static ev_io sigev;
560		632
561	static void	633	void inline_size
562	signals_init (ANSIG *base, int count)	634	signals_init (ANSIG *base, int count)
563	{	635	{
564	while (count--)	636	while (count--)
565	{	637	{
566	base->head = 0;	638	base->head = 0;
…		…
571	}	643	}
572		644
573	static void	645	static void
574	sighandler (int signum)	646	sighandler (int signum)
575	{	647	{
576	#if WIN32	648	#if _WIN32
577	signal (signum, sighandler);	649	signal (signum, sighandler);
578	#endif	650	#endif
579		651
580	signals [signum - 1].gotsig = 1;	652	signals [signum - 1].gotsig = 1;
581		653
582	if (!gotsig)	654	if (!gotsig)
583	{	655	{
584	int old_errno = errno;	656	int old_errno = errno;
585	gotsig = 1;	657	gotsig = 1;
586	#ifdef WIN32
587	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
588	#else
589	write (sigpipe [1], &signum, 1);	658	write (sigpipe [1], &signum, 1);
590	#endif
591	errno = old_errno;	659	errno = old_errno;
592	}	660	}
593	}	661	}
594		662
595	void	663	void noinline
596	ev_feed_signal_event (EV_P_ int signum)	664	ev_feed_signal_event (EV_P_ int signum)
597	{	665	{
598	WL w;	666	WL w;
599		667
600	#if EV_MULTIPLICITY	668	#if EV_MULTIPLICITY
601	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	669	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
602	#endif	670	#endif
603		671
604	--signum;	672	--signum;
605		673
606	if (signum < 0 || signum >= signalmax)	674	if (signum < 0 || signum >= signalmax)
…		…
611	for (w = signals [signum].head; w; w = w->next)	679	for (w = signals [signum].head; w; w = w->next)
612	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	680	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
613	}	681	}
614		682
615	static void	683	static void
616	sigcb (EV_P_ struct ev_io *iow, int revents)	684	sigcb (EV_P_ ev_io *iow, int revents)
617	{	685	{
618	int signum;	686	int signum;
619		687
620	#ifdef WIN32
621	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
622	#else
623	read (sigpipe [0], &revents, 1);	688	read (sigpipe [0], &revents, 1);
624	#endif
625	gotsig = 0;	689	gotsig = 0;
626		690
627	for (signum = signalmax; signum--; )	691	for (signum = signalmax; signum--; )
628	if (signals [signum].gotsig)	692	if (signals [signum].gotsig)
629	ev_feed_signal_event (EV_A_ signum + 1);	693	ev_feed_signal_event (EV_A_ signum + 1);
630	}	694	}
631		695
632	static void	696	void inline_size
		697	fd_intern (int fd)
		698	{
		699	#ifdef _WIN32
		700	int arg = 1;
		701	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		702	#else
		703	fcntl (fd, F_SETFD, FD_CLOEXEC);
		704	fcntl (fd, F_SETFL, O_NONBLOCK);
		705	#endif
		706	}
		707
		708	static void noinline
633	siginit (EV_P)	709	siginit (EV_P)
634	{	710	{
635	#ifndef WIN32	711	fd_intern (sigpipe [0]);
636	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	712	fd_intern (sigpipe [1]);
637	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
638
639	/* rather than sort out wether we really need nb, set it */
640	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
641	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
642	#endif
643		713
644	ev_io_set (&sigev, sigpipe [0], EV_READ);	714	ev_io_set (&sigev, sigpipe [0], EV_READ);
645	ev_io_start (EV_A_ &sigev);	715	ev_io_start (EV_A_ &sigev);
646	ev_unref (EV_A); /* child watcher should not keep loop alive */	716	ev_unref (EV_A); /* child watcher should not keep loop alive */
647	}	717	}
648		718
649	/*****************************************************************************/	719	/*****************************************************************************/
650		720
651	static struct ev_child *childs [PID_HASHSIZE];	721	static ev_child *childs [EV_PID_HASHSIZE];
652		722
653	#ifndef WIN32	723	#ifndef _WIN32
654		724
655	static struct ev_signal childev;	725	static ev_signal childev;
656		726
657	#ifndef WCONTINUED	727	void inline_speed
658	# define WCONTINUED 0
659	#endif
660
661	static void
662	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	728	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
663	{	729	{
664	struct ev_child *w;	730	ev_child *w;
665		731
666	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	732	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
667	if (w->pid == pid || !w->pid)	733	if (w->pid == pid || !w->pid)
668	{	734	{
669	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	735	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
670	w->rpid = pid;	736	w->rpid = pid;
671	w->rstatus = status;	737	w->rstatus = status;
672	ev_feed_event (EV_A_ (W)w, EV_CHILD);	738	ev_feed_event (EV_A_ (W)w, EV_CHILD);
673	}	739	}
674	}	740	}
675		741
		742	#ifndef WCONTINUED
		743	# define WCONTINUED 0
		744	#endif
		745
676	static void	746	static void
677	childcb (EV_P_ struct ev_signal *sw, int revents)	747	childcb (EV_P_ ev_signal *sw, int revents)
678	{	748	{
679	int pid, status;	749	int pid, status;
680		750
		751	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
681	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	752	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
682	{	753	if (!WCONTINUED
		754	|| errno != EINVAL
		755	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		756	return;
		757
683	/* make sure we are called again until all childs have been reaped */	758	/* make sure we are called again until all childs have been reaped */
		759	/* we need to do it this way so that the callback gets called before we continue */
684	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	760	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
685		761
686	child_reap (EV_A_ sw, pid, pid, status);	762	child_reap (EV_A_ sw, pid, pid, status);
		763	if (EV_PID_HASHSIZE > 1)
687	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	764	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
688	}
689	}	765	}
690		766
691	#endif	767	#endif
692		768
693	/*****************************************************************************/	769	/*****************************************************************************/
694		770
		771	#if EV_USE_PORT
		772	# include "ev_port.c"
		773	#endif
695	#if EV_USE_KQUEUE	774	#if EV_USE_KQUEUE
696	# include "ev_kqueue.c"	775	# include "ev_kqueue.c"
697	#endif	776	#endif
698	#if EV_USE_EPOLL	777	#if EV_USE_EPOLL
699	# include "ev_epoll.c"	778	# include "ev_epoll.c"
…		…
716	{	795	{
717	return EV_VERSION_MINOR;	796	return EV_VERSION_MINOR;
718	}	797	}
719		798
720	/* return true if we are running with elevated privileges and should ignore env variables */	799	/* return true if we are running with elevated privileges and should ignore env variables */
721	static int	800	int inline_size
722	enable_secure (void)	801	enable_secure (void)
723	{	802	{
724	#ifdef WIN32	803	#ifdef _WIN32
725	return 0;	804	return 0;
726	#else	805	#else
727	return getuid () != geteuid ()	806	return getuid () != geteuid ()
728	|| getgid () != getegid ();	807	|| getgid () != getegid ();
729	#endif	808	#endif
730	}	809	}
731		810
732	int	811	unsigned int
733	ev_method (EV_P)	812	ev_supported_backends (void)
734	{	813	{
735	return method;	814	unsigned int flags = 0;
		815
		816	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		817	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		818	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		819	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		820	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		821
		822	return flags;
		823	}
		824
		825	unsigned int
		826	ev_recommended_backends (void)
		827	{
		828	unsigned int flags = ev_supported_backends ();
		829
		830	#ifndef __NetBSD__
		831	/* kqueue is borked on everything but netbsd apparently */
		832	/* it usually doesn't work correctly on anything but sockets and pipes */
		833	flags &= ~EVBACKEND_KQUEUE;
		834	#endif
		835	#ifdef __APPLE__
		836	// flags &= ~EVBACKEND_KQUEUE; for documentation
		837	flags &= ~EVBACKEND_POLL;
		838	#endif
		839
		840	return flags;
		841	}
		842
		843	unsigned int
		844	ev_embeddable_backends (void)
		845	{
		846	return EVBACKEND_EPOLL
		847	| EVBACKEND_KQUEUE
		848	| EVBACKEND_PORT;
		849	}
		850
		851	unsigned int
		852	ev_backend (EV_P)
		853	{
		854	return backend;
736	}	855	}
737		856
738	static void	857	static void
739	loop_init (EV_P_ int methods)	858	loop_init (EV_P_ unsigned int flags)
740	{	859	{
741	if (!method)	860	if (!backend)
742	{	861	{
743	#if EV_USE_MONOTONIC	862	#if EV_USE_MONOTONIC
744	{	863	{
745	struct timespec ts;	864	struct timespec ts;
746	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	865	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
751	ev_rt_now = ev_time ();	870	ev_rt_now = ev_time ();
752	mn_now = get_clock ();	871	mn_now = get_clock ();
753	now_floor = mn_now;	872	now_floor = mn_now;
754	rtmn_diff = ev_rt_now - mn_now;	873	rtmn_diff = ev_rt_now - mn_now;
755		874
756	if (methods == EVMETHOD_AUTO)	875	if (!(flags & EVFLAG_NOENV)
757	if (!enable_secure () && getenv ("LIBEV_METHODS"))	876	&& !enable_secure ()
		877	&& getenv ("LIBEV_FLAGS"))
758	methods = atoi (getenv ("LIBEV_METHODS"));	878	flags = atoi (getenv ("LIBEV_FLAGS"));
759	else
760	methods = EVMETHOD_ANY;
761		879
762	method = 0;	880	if (!(flags & 0x0000ffffUL))
763	#if EV_USE_WIN32	881	flags |= ev_recommended_backends ();
764	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	882
		883	backend = 0;
		884	#if EV_USE_PORT
		885	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
765	#endif	886	#endif
766	#if EV_USE_KQUEUE	887	#if EV_USE_KQUEUE
767	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	888	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
768	#endif	889	#endif
769	#if EV_USE_EPOLL	890	#if EV_USE_EPOLL
770	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	891	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
771	#endif	892	#endif
772	#if EV_USE_POLL	893	#if EV_USE_POLL
773	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	894	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
774	#endif	895	#endif
775	#if EV_USE_SELECT	896	#if EV_USE_SELECT
776	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	897	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
777	#endif	898	#endif
778		899
779	ev_init (&sigev, sigcb);	900	ev_init (&sigev, sigcb);
780	ev_set_priority (&sigev, EV_MAXPRI);	901	ev_set_priority (&sigev, EV_MAXPRI);
781	}	902	}
782	}	903	}
783		904
784	void	905	static void
785	loop_destroy (EV_P)	906	loop_destroy (EV_P)
786	{	907	{
787	int i;	908	int i;
788		909
789	#if EV_USE_WIN32	910	#if EV_USE_PORT
790	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	911	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
791	#endif	912	#endif
792	#if EV_USE_KQUEUE	913	#if EV_USE_KQUEUE
793	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	914	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
794	#endif	915	#endif
795	#if EV_USE_EPOLL	916	#if EV_USE_EPOLL
796	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	917	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
797	#endif	918	#endif
798	#if EV_USE_POLL	919	#if EV_USE_POLL
799	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	920	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
800	#endif	921	#endif
801	#if EV_USE_SELECT	922	#if EV_USE_SELECT
802	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	923	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
803	#endif	924	#endif
804		925
805	for (i = NUMPRI; i--; )	926	for (i = NUMPRI; i--; )
806	array_free (pending, [i]);	927	array_free (pending, [i]);
807		928
808	/* have to use the microsoft-never-gets-it-right macro */	929	/* have to use the microsoft-never-gets-it-right macro */
809	array_free_microshit (fdchange);	930	array_free (fdchange, EMPTY0);
810	array_free_microshit (timer);	931	array_free (timer, EMPTY0);
811	#if EV_PERIODICS	932	#if EV_PERIODIC_ENABLE
812	array_free_microshit (periodic);	933	array_free (periodic, EMPTY0);
813	#endif	934	#endif
814	array_free_microshit (idle);	935	array_free (idle, EMPTY0);
815	array_free_microshit (prepare);	936	array_free (prepare, EMPTY0);
816	array_free_microshit (check);	937	array_free (check, EMPTY0);
817		938
818	method = 0;	939	backend = 0;
819	}	940	}
820		941
821	static void	942	static void
822	loop_fork (EV_P)	943	loop_fork (EV_P)
823	{	944	{
		945	#if EV_USE_PORT
		946	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		947	#endif
		948	#if EV_USE_KQUEUE
		949	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		950	#endif
824	#if EV_USE_EPOLL	951	#if EV_USE_EPOLL
825	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	952	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
826	#endif
827	#if EV_USE_KQUEUE
828	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
829	#endif	953	#endif
830		954
831	if (ev_is_active (&sigev))	955	if (ev_is_active (&sigev))
832	{	956	{
833	/* default loop */	957	/* default loop */
…		…
846	postfork = 0;	970	postfork = 0;
847	}	971	}
848		972
849	#if EV_MULTIPLICITY	973	#if EV_MULTIPLICITY
850	struct ev_loop *	974	struct ev_loop *
851	ev_loop_new (int methods)	975	ev_loop_new (unsigned int flags)
852	{	976	{
853	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	977	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
854		978
855	memset (loop, 0, sizeof (struct ev_loop));	979	memset (loop, 0, sizeof (struct ev_loop));
856		980
857	loop_init (EV_A_ methods);	981	loop_init (EV_A_ flags);
858		982
859	if (ev_method (EV_A))	983	if (ev_backend (EV_A))
860	return loop;	984	return loop;
861		985
862	return 0;	986	return 0;
863	}	987	}
864		988
…		…
877		1001
878	#endif	1002	#endif
879		1003
880	#if EV_MULTIPLICITY	1004	#if EV_MULTIPLICITY
881	struct ev_loop *	1005	struct ev_loop *
		1006	ev_default_loop_init (unsigned int flags)
882	#else	1007	#else
883	int	1008	int
		1009	ev_default_loop (unsigned int flags)
884	#endif	1010	#endif
885	ev_default_loop (int methods)
886	{	1011	{
887	if (sigpipe [0] == sigpipe [1])	1012	if (sigpipe [0] == sigpipe [1])
888	if (pipe (sigpipe))	1013	if (pipe (sigpipe))
889	return 0;	1014	return 0;
890		1015
891	if (!default_loop)	1016	if (!ev_default_loop_ptr)
892	{	1017	{
893	#if EV_MULTIPLICITY	1018	#if EV_MULTIPLICITY
894	struct ev_loop *loop = default_loop = &default_loop_struct;	1019	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
895	#else	1020	#else
896	default_loop = 1;	1021	ev_default_loop_ptr = 1;
897	#endif	1022	#endif
898		1023
899	loop_init (EV_A_ methods);	1024	loop_init (EV_A_ flags);
900		1025
901	if (ev_method (EV_A))	1026	if (ev_backend (EV_A))
902	{	1027	{
903	siginit (EV_A);	1028	siginit (EV_A);
904		1029
905	#ifndef WIN32	1030	#ifndef _WIN32
906	ev_signal_init (&childev, childcb, SIGCHLD);	1031	ev_signal_init (&childev, childcb, SIGCHLD);
907	ev_set_priority (&childev, EV_MAXPRI);	1032	ev_set_priority (&childev, EV_MAXPRI);
908	ev_signal_start (EV_A_ &childev);	1033	ev_signal_start (EV_A_ &childev);
909	ev_unref (EV_A); /* child watcher should not keep loop alive */	1034	ev_unref (EV_A); /* child watcher should not keep loop alive */
910	#endif	1035	#endif
911	}	1036	}
912	else	1037	else
913	default_loop = 0;	1038	ev_default_loop_ptr = 0;
914	}	1039	}
915		1040
916	return default_loop;	1041	return ev_default_loop_ptr;
917	}	1042	}
918		1043
919	void	1044	void
920	ev_default_destroy (void)	1045	ev_default_destroy (void)
921	{	1046	{
922	#if EV_MULTIPLICITY	1047	#if EV_MULTIPLICITY
923	struct ev_loop *loop = default_loop;	1048	struct ev_loop *loop = ev_default_loop_ptr;
924	#endif	1049	#endif
925		1050
926	#ifndef WIN32	1051	#ifndef _WIN32
927	ev_ref (EV_A); /* child watcher */	1052	ev_ref (EV_A); /* child watcher */
928	ev_signal_stop (EV_A_ &childev);	1053	ev_signal_stop (EV_A_ &childev);
929	#endif	1054	#endif
930		1055
931	ev_ref (EV_A); /* signal watcher */	1056	ev_ref (EV_A); /* signal watcher */
…		…
939		1064
940	void	1065	void
941	ev_default_fork (void)	1066	ev_default_fork (void)
942	{	1067	{
943	#if EV_MULTIPLICITY	1068	#if EV_MULTIPLICITY
944	struct ev_loop *loop = default_loop;	1069	struct ev_loop *loop = ev_default_loop_ptr;
945	#endif	1070	#endif
946		1071
947	if (method)	1072	if (backend)
948	postfork = 1;	1073	postfork = 1;
949	}	1074	}
950		1075
951	/*****************************************************************************/	1076	/*****************************************************************************/
952		1077
953	static int	1078	int inline_size
954	any_pending (EV_P)	1079	any_pending (EV_P)
955	{	1080	{
956	int pri;	1081	int pri;
957		1082
958	for (pri = NUMPRI; pri--; )	1083	for (pri = NUMPRI; pri--; )
…		…
960	return 1;	1085	return 1;
961		1086
962	return 0;	1087	return 0;
963	}	1088	}
964		1089
965	static void	1090	void inline_speed
966	call_pending (EV_P)	1091	call_pending (EV_P)
967	{	1092	{
968	int pri;	1093	int pri;
969		1094
970	for (pri = NUMPRI; pri--; )	1095	for (pri = NUMPRI; pri--; )
971	while (pendingcnt [pri])	1096	while (pendingcnt [pri])
972	{	1097	{
973	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1098	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
974		1099
975	if (p->w)	1100	if (expect_true (p->w))
976	{	1101	{
		1102	assert (("non-pending watcher on pending list", p->w->pending));
		1103
977	p->w->pending = 0;	1104	p->w->pending = 0;
978	EV_CB_INVOKE (p->w, p->events);	1105	EV_CB_INVOKE (p->w, p->events);
979	}	1106	}
980	}	1107	}
981	}	1108	}
982		1109
983	static void	1110	void inline_size
984	timers_reify (EV_P)	1111	timers_reify (EV_P)
985	{	1112	{
986	while (timercnt && ((WT)timers [0])->at <= mn_now)	1113	while (timercnt && ((WT)timers [0])->at <= mn_now)
987	{	1114	{
988	struct ev_timer *w = timers [0];	1115	ev_timer *w = timers [0];
989		1116
990	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1117	assert (("inactive timer on timer heap detected", ev_is_active (w)));
991		1118
992	/* first reschedule or stop timer */	1119	/* first reschedule or stop timer */
993	if (w->repeat)	1120	if (w->repeat)
…		…
1005		1132
1006	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1133	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1007	}	1134	}
1008	}	1135	}
1009		1136
1010	#if EV_PERIODICS	1137	#if EV_PERIODIC_ENABLE
1011	static void	1138	void inline_size
1012	periodics_reify (EV_P)	1139	periodics_reify (EV_P)
1013	{	1140	{
1014	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1141	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1015	{	1142	{
1016	struct ev_periodic *w = periodics [0];	1143	ev_periodic *w = periodics [0];
1017		1144
1018	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1145	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1019		1146
1020	/* first reschedule or stop timer */	1147	/* first reschedule or stop timer */
1021	if (w->reschedule_cb)	1148	if (w->reschedule_cb)
1022	{	1149	{
1023	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1150	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1024
1025	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1151	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1026	downheap ((WT *)periodics, periodiccnt, 0);	1152	downheap ((WT *)periodics, periodiccnt, 0);
1027	}	1153	}
1028	else if (w->interval)	1154	else if (w->interval)
1029	{	1155	{
…		…
1036		1162
1037	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1163	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1038	}	1164	}
1039	}	1165	}
1040		1166
1041	static void	1167	static void noinline
1042	periodics_reschedule (EV_P)	1168	periodics_reschedule (EV_P)
1043	{	1169	{
1044	int i;	1170	int i;
1045		1171
1046	/* adjust periodics after time jump */	1172	/* adjust periodics after time jump */
1047	for (i = 0; i < periodiccnt; ++i)	1173	for (i = 0; i < periodiccnt; ++i)
1048	{	1174	{
1049	struct ev_periodic *w = periodics [i];	1175	ev_periodic *w = periodics [i];
1050		1176
1051	if (w->reschedule_cb)	1177	if (w->reschedule_cb)
1052	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1178	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1053	else if (w->interval)	1179	else if (w->interval)
1054	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1180	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
…		…
1058	for (i = periodiccnt >> 1; i--; )	1184	for (i = periodiccnt >> 1; i--; )
1059	downheap ((WT *)periodics, periodiccnt, i);	1185	downheap ((WT *)periodics, periodiccnt, i);
1060	}	1186	}
1061	#endif	1187	#endif
1062		1188
1063	inline int	1189	int inline_size
1064	time_update_monotonic (EV_P)	1190	time_update_monotonic (EV_P)
1065	{	1191	{
1066	mn_now = get_clock ();	1192	mn_now = get_clock ();
1067		1193
1068	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1194	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
…		…
1076	ev_rt_now = ev_time ();	1202	ev_rt_now = ev_time ();
1077	return 1;	1203	return 1;
1078	}	1204	}
1079	}	1205	}
1080		1206
1081	static void	1207	void inline_size
1082	time_update (EV_P)	1208	time_update (EV_P)
1083	{	1209	{
1084	int i;	1210	int i;
1085		1211
1086	#if EV_USE_MONOTONIC	1212	#if EV_USE_MONOTONIC
…		…
1088	{	1214	{
1089	if (time_update_monotonic (EV_A))	1215	if (time_update_monotonic (EV_A))
1090	{	1216	{
1091	ev_tstamp odiff = rtmn_diff;	1217	ev_tstamp odiff = rtmn_diff;
1092		1218
1093	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1219	/* loop a few times, before making important decisions.
		1220	* on the choice of "4": one iteration isn't enough,
		1221	* in case we get preempted during the calls to
		1222	* ev_time and get_clock. a second call is almost guarenteed
		1223	* to succeed in that case, though. and looping a few more times
		1224	* doesn't hurt either as we only do this on time-jumps or
		1225	* in the unlikely event of getting preempted here.
		1226	*/
		1227	for (i = 4; --i; )
1094	{	1228	{
1095	rtmn_diff = ev_rt_now - mn_now;	1229	rtmn_diff = ev_rt_now - mn_now;
1096		1230
1097	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1231	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1098	return; /* all is well */	1232	return; /* all is well */
…		…
1100	ev_rt_now = ev_time ();	1234	ev_rt_now = ev_time ();
1101	mn_now = get_clock ();	1235	mn_now = get_clock ();
1102	now_floor = mn_now;	1236	now_floor = mn_now;
1103	}	1237	}
1104		1238
1105	# if EV_PERIODICS	1239	# if EV_PERIODIC_ENABLE
1106	periodics_reschedule (EV_A);	1240	periodics_reschedule (EV_A);
1107	# endif	1241	# endif
1108	/* no timer adjustment, as the monotonic clock doesn't jump */	1242	/* no timer adjustment, as the monotonic clock doesn't jump */
1109	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1243	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1110	}	1244	}
…		…
1114	{	1248	{
1115	ev_rt_now = ev_time ();	1249	ev_rt_now = ev_time ();
1116		1250
1117	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1251	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1118	{	1252	{
1119	#if EV_PERIODICS	1253	#if EV_PERIODIC_ENABLE
1120	periodics_reschedule (EV_A);	1254	periodics_reschedule (EV_A);
1121	#endif	1255	#endif
1122		1256
1123	/* adjust timers. this is easy, as the offset is the same for all */	1257	/* adjust timers. this is easy, as the offset is the same for all */
1124	for (i = 0; i < timercnt; ++i)	1258	for (i = 0; i < timercnt; ++i)
…		…
1144	static int loop_done;	1278	static int loop_done;
1145		1279
1146	void	1280	void
1147	ev_loop (EV_P_ int flags)	1281	ev_loop (EV_P_ int flags)
1148	{	1282	{
1149	double block;
1150	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1283	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1284	? EVUNLOOP_ONE
		1285	: EVUNLOOP_CANCEL;
1151		1286
1152	do	1287	while (activecnt)
1153	{	1288	{
		1289	/* we might have forked, so reify kernel state if necessary */
		1290	#if EV_FORK_ENABLE
		1291	if (expect_false (postfork))
		1292	if (forkcnt)
		1293	{
		1294	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1295	call_pending (EV_A);
		1296	}
		1297	#endif
		1298
1154	/* queue check watchers (and execute them) */	1299	/* queue check watchers (and execute them) */
1155	if (expect_false (preparecnt))	1300	if (expect_false (preparecnt))
1156	{	1301	{
1157	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1302	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1158	call_pending (EV_A);	1303	call_pending (EV_A);
…		…
1164		1309
1165	/* update fd-related kernel structures */	1310	/* update fd-related kernel structures */
1166	fd_reify (EV_A);	1311	fd_reify (EV_A);
1167		1312
1168	/* calculate blocking time */	1313	/* calculate blocking time */
		1314	{
		1315	double block;
1169		1316
1170	/* we only need this for !monotonic clock or timers, but as we basically	1317	if (flags & EVLOOP_NONBLOCK || idlecnt)
1171	always have timers, we just calculate it always */	1318	block = 0.; /* do not block at all */
		1319	else
		1320	{
		1321	/* update time to cancel out callback processing overhead */
1172	#if EV_USE_MONOTONIC	1322	#if EV_USE_MONOTONIC
1173	if (expect_true (have_monotonic))	1323	if (expect_true (have_monotonic))
1174	time_update_monotonic (EV_A);	1324	time_update_monotonic (EV_A);
1175	else	1325	else
1176	#endif	1326	#endif
1177	{	1327	{
1178	ev_rt_now = ev_time ();	1328	ev_rt_now = ev_time ();
1179	mn_now = ev_rt_now;	1329	mn_now = ev_rt_now;
1180	}	1330	}
1181		1331
1182	if (flags & EVLOOP_NONBLOCK || idlecnt)
1183	block = 0.;
1184	else
1185	{
1186	block = MAX_BLOCKTIME;	1332	block = MAX_BLOCKTIME;
1187		1333
1188	if (timercnt)	1334	if (timercnt)
1189	{	1335	{
1190	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1336	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1191	if (block > to) block = to;	1337	if (block > to) block = to;
1192	}	1338	}
1193		1339
1194	#if EV_PERIODICS	1340	#if EV_PERIODIC_ENABLE
1195	if (periodiccnt)	1341	if (periodiccnt)
1196	{	1342	{
1197	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1343	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1198	if (block > to) block = to;	1344	if (block > to) block = to;
1199	}	1345	}
1200	#endif	1346	#endif
1201		1347
1202	if (block < 0.) block = 0.;	1348	if (expect_false (block < 0.)) block = 0.;
1203	}	1349	}
1204		1350
1205	method_poll (EV_A_ block);	1351	backend_poll (EV_A_ block);
		1352	}
1206		1353
1207	/* update ev_rt_now, do magic */	1354	/* update ev_rt_now, do magic */
1208	time_update (EV_A);	1355	time_update (EV_A);
1209		1356
1210	/* queue pending timers and reschedule them */	1357	/* queue pending timers and reschedule them */
1211	timers_reify (EV_A); /* relative timers called last */	1358	timers_reify (EV_A); /* relative timers called last */
1212	#if EV_PERIODICS	1359	#if EV_PERIODIC_ENABLE
1213	periodics_reify (EV_A); /* absolute timers called first */	1360	periodics_reify (EV_A); /* absolute timers called first */
1214	#endif	1361	#endif
1215		1362
1216	/* queue idle watchers unless io or timers are pending */	1363	/* queue idle watchers unless other events are pending */
1217	if (idlecnt && !any_pending (EV_A))	1364	if (idlecnt && !any_pending (EV_A))
1218	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1365	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1219		1366
1220	/* queue check watchers, to be executed first */	1367	/* queue check watchers, to be executed first */
1221	if (checkcnt)	1368	if (expect_false (checkcnt))
1222	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1369	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1223		1370
1224	call_pending (EV_A);	1371	call_pending (EV_A);
1225	}
1226	while (activecnt && !loop_done);
1227		1372
1228	if (loop_done != 2)	1373	if (expect_false (loop_done))
1229	loop_done = 0;	1374	break;
		1375	}
		1376
		1377	if (loop_done == EVUNLOOP_ONE)
		1378	loop_done = EVUNLOOP_CANCEL;
1230	}	1379	}
1231		1380
1232	void	1381	void
1233	ev_unloop (EV_P_ int how)	1382	ev_unloop (EV_P_ int how)
1234	{	1383	{
1235	loop_done = how;	1384	loop_done = how;
1236	}	1385	}
1237		1386
1238	/*****************************************************************************/	1387	/*****************************************************************************/
1239		1388
1240	inline void	1389	void inline_size
1241	wlist_add (WL *head, WL elem)	1390	wlist_add (WL *head, WL elem)
1242	{	1391	{
1243	elem->next = *head;	1392	elem->next = *head;
1244	*head = elem;	1393	*head = elem;
1245	}	1394	}
1246		1395
1247	inline void	1396	void inline_size
1248	wlist_del (WL *head, WL elem)	1397	wlist_del (WL *head, WL elem)
1249	{	1398	{
1250	while (*head)	1399	while (*head)
1251	{	1400	{
1252	if (*head == elem)	1401	if (*head == elem)
…		…
1257		1406
1258	head = &(*head)->next;	1407	head = &(*head)->next;
1259	}	1408	}
1260	}	1409	}
1261		1410
1262	inline void	1411	void inline_speed
1263	ev_clear_pending (EV_P_ W w)	1412	ev_clear_pending (EV_P_ W w)
1264	{	1413	{
1265	if (w->pending)	1414	if (w->pending)
1266	{	1415	{
1267	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1416	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1268	w->pending = 0;	1417	w->pending = 0;
1269	}	1418	}
1270	}	1419	}
1271		1420
1272	inline void	1421	void inline_speed
1273	ev_start (EV_P_ W w, int active)	1422	ev_start (EV_P_ W w, int active)
1274	{	1423	{
1275	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1424	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1276	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1425	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1277		1426
1278	w->active = active;	1427	w->active = active;
1279	ev_ref (EV_A);	1428	ev_ref (EV_A);
1280	}	1429	}
1281		1430
1282	inline void	1431	void inline_size
1283	ev_stop (EV_P_ W w)	1432	ev_stop (EV_P_ W w)
1284	{	1433	{
1285	ev_unref (EV_A);	1434	ev_unref (EV_A);
1286	w->active = 0;	1435	w->active = 0;
1287	}	1436	}
1288		1437
1289	/*****************************************************************************/	1438	/*****************************************************************************/
1290		1439
1291	void	1440	void
1292	ev_io_start (EV_P_ struct ev_io *w)	1441	ev_io_start (EV_P_ ev_io *w)
1293	{	1442	{
1294	int fd = w->fd;	1443	int fd = w->fd;
1295		1444
1296	if (ev_is_active (w))	1445	if (expect_false (ev_is_active (w)))
1297	return;	1446	return;
1298		1447
1299	assert (("ev_io_start called with negative fd", fd >= 0));	1448	assert (("ev_io_start called with negative fd", fd >= 0));
1300		1449
1301	ev_start (EV_A_ (W)w, 1);	1450	ev_start (EV_A_ (W)w, 1);
…		…
1304		1453
1305	fd_change (EV_A_ fd);	1454	fd_change (EV_A_ fd);
1306	}	1455	}
1307		1456
1308	void	1457	void
1309	ev_io_stop (EV_P_ struct ev_io *w)	1458	ev_io_stop (EV_P_ ev_io *w)
1310	{	1459	{
1311	ev_clear_pending (EV_A_ (W)w);	1460	ev_clear_pending (EV_A_ (W)w);
1312	if (!ev_is_active (w))	1461	if (expect_false (!ev_is_active (w)))
1313	return;	1462	return;
1314		1463
1315	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1464	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1316		1465
1317	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1466	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
…		…
1319		1468
1320	fd_change (EV_A_ w->fd);	1469	fd_change (EV_A_ w->fd);
1321	}	1470	}
1322		1471
1323	void	1472	void
1324	ev_timer_start (EV_P_ struct ev_timer *w)	1473	ev_timer_start (EV_P_ ev_timer *w)
1325	{	1474	{
1326	if (ev_is_active (w))	1475	if (expect_false (ev_is_active (w)))
1327	return;	1476	return;
1328		1477
1329	((WT)w)->at += mn_now;	1478	((WT)w)->at += mn_now;
1330		1479
1331	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1480	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1332		1481
1333	ev_start (EV_A_ (W)w, ++timercnt);	1482	ev_start (EV_A_ (W)w, ++timercnt);
1334	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1483	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1335	timers [timercnt - 1] = w;	1484	timers [timercnt - 1] = w;
1336	upheap ((WT *)timers, timercnt - 1);	1485	upheap ((WT *)timers, timercnt - 1);
1337		1486
1338	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1487	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1339	}	1488	}
1340		1489
1341	void	1490	void
1342	ev_timer_stop (EV_P_ struct ev_timer *w)	1491	ev_timer_stop (EV_P_ ev_timer *w)
1343	{	1492	{
1344	ev_clear_pending (EV_A_ (W)w);	1493	ev_clear_pending (EV_A_ (W)w);
1345	if (!ev_is_active (w))	1494	if (expect_false (!ev_is_active (w)))
1346	return;	1495	return;
1347		1496
1348	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1497	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1349		1498
1350	if (((W)w)->active < timercnt--)	1499	if (expect_true (((W)w)->active < timercnt--))
1351	{	1500	{
1352	timers [((W)w)->active - 1] = timers [timercnt];	1501	timers [((W)w)->active - 1] = timers [timercnt];
1353	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1502	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1354	}	1503	}
1355		1504
…		…
1357		1506
1358	ev_stop (EV_A_ (W)w);	1507	ev_stop (EV_A_ (W)w);
1359	}	1508	}
1360		1509
1361	void	1510	void
1362	ev_timer_again (EV_P_ struct ev_timer *w)	1511	ev_timer_again (EV_P_ ev_timer *w)
1363	{	1512	{
1364	if (ev_is_active (w))	1513	if (ev_is_active (w))
1365	{	1514	{
1366	if (w->repeat)	1515	if (w->repeat)
1367	{	1516	{
…		…
1370	}	1519	}
1371	else	1520	else
1372	ev_timer_stop (EV_A_ w);	1521	ev_timer_stop (EV_A_ w);
1373	}	1522	}
1374	else if (w->repeat)	1523	else if (w->repeat)
		1524	{
		1525	w->at = w->repeat;
1375	ev_timer_start (EV_A_ w);	1526	ev_timer_start (EV_A_ w);
		1527	}
1376	}	1528	}
1377		1529
1378	#if EV_PERIODICS	1530	#if EV_PERIODIC_ENABLE
1379	void	1531	void
1380	ev_periodic_start (EV_P_ struct ev_periodic *w)	1532	ev_periodic_start (EV_P_ ev_periodic *w)
1381	{	1533	{
1382	if (ev_is_active (w))	1534	if (expect_false (ev_is_active (w)))
1383	return;	1535	return;
1384		1536
1385	if (w->reschedule_cb)	1537	if (w->reschedule_cb)
1386	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1538	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1387	else if (w->interval)	1539	else if (w->interval)
…		…
1390	/* this formula differs from the one in periodic_reify because we do not always round up */	1542	/* this formula differs from the one in periodic_reify because we do not always round up */
1391	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1543	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1392	}	1544	}
1393		1545
1394	ev_start (EV_A_ (W)w, ++periodiccnt);	1546	ev_start (EV_A_ (W)w, ++periodiccnt);
1395	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1547	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1396	periodics [periodiccnt - 1] = w;	1548	periodics [periodiccnt - 1] = w;
1397	upheap ((WT *)periodics, periodiccnt - 1);	1549	upheap ((WT *)periodics, periodiccnt - 1);
1398		1550
1399	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1551	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1400	}	1552	}
1401		1553
1402	void	1554	void
1403	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1555	ev_periodic_stop (EV_P_ ev_periodic *w)
1404	{	1556	{
1405	ev_clear_pending (EV_A_ (W)w);	1557	ev_clear_pending (EV_A_ (W)w);
1406	if (!ev_is_active (w))	1558	if (expect_false (!ev_is_active (w)))
1407	return;	1559	return;
1408		1560
1409	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1561	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1410		1562
1411	if (((W)w)->active < periodiccnt--)	1563	if (expect_true (((W)w)->active < periodiccnt--))
1412	{	1564	{
1413	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1565	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1414	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1566	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1415	}	1567	}
1416		1568
1417	ev_stop (EV_A_ (W)w);	1569	ev_stop (EV_A_ (W)w);
1418	}	1570	}
1419		1571
1420	void	1572	void
1421	ev_periodic_again (EV_P_ struct ev_periodic *w)	1573	ev_periodic_again (EV_P_ ev_periodic *w)
1422	{	1574	{
1423	/* TODO: use adjustheap and recalculation */	1575	/* TODO: use adjustheap and recalculation */
1424	ev_periodic_stop (EV_A_ w);	1576	ev_periodic_stop (EV_A_ w);
1425	ev_periodic_start (EV_A_ w);	1577	ev_periodic_start (EV_A_ w);
1426	}	1578	}
1427	#endif	1579	#endif
1428		1580
1429	void
1430	ev_idle_start (EV_P_ struct ev_idle *w)
1431	{
1432	if (ev_is_active (w))
1433	return;
1434
1435	ev_start (EV_A_ (W)w, ++idlecnt);
1436	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1437	idles [idlecnt - 1] = w;
1438	}
1439
1440	void
1441	ev_idle_stop (EV_P_ struct ev_idle *w)
1442	{
1443	ev_clear_pending (EV_A_ (W)w);
1444	if (ev_is_active (w))
1445	return;
1446
1447	idles [((W)w)->active - 1] = idles [--idlecnt];
1448	ev_stop (EV_A_ (W)w);
1449	}
1450
1451	void
1452	ev_prepare_start (EV_P_ struct ev_prepare *w)
1453	{
1454	if (ev_is_active (w))
1455	return;
1456
1457	ev_start (EV_A_ (W)w, ++preparecnt);
1458	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1459	prepares [preparecnt - 1] = w;
1460	}
1461
1462	void
1463	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1464	{
1465	ev_clear_pending (EV_A_ (W)w);
1466	if (ev_is_active (w))
1467	return;
1468
1469	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1470	ev_stop (EV_A_ (W)w);
1471	}
1472
1473	void
1474	ev_check_start (EV_P_ struct ev_check *w)
1475	{
1476	if (ev_is_active (w))
1477	return;
1478
1479	ev_start (EV_A_ (W)w, ++checkcnt);
1480	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1481	checks [checkcnt - 1] = w;
1482	}
1483
1484	void
1485	ev_check_stop (EV_P_ struct ev_check *w)
1486	{
1487	ev_clear_pending (EV_A_ (W)w);
1488	if (!ev_is_active (w))
1489	return;
1490
1491	checks [((W)w)->active - 1] = checks [--checkcnt];
1492	ev_stop (EV_A_ (W)w);
1493	}
1494
1495	#ifndef SA_RESTART	1581	#ifndef SA_RESTART
1496	# define SA_RESTART 0	1582	# define SA_RESTART 0
1497	#endif	1583	#endif
1498		1584
1499	void	1585	void
1500	ev_signal_start (EV_P_ struct ev_signal *w)	1586	ev_signal_start (EV_P_ ev_signal *w)
1501	{	1587	{
1502	#if EV_MULTIPLICITY	1588	#if EV_MULTIPLICITY
1503	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1589	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1504	#endif	1590	#endif
1505	if (ev_is_active (w))	1591	if (expect_false (ev_is_active (w)))
1506	return;	1592	return;
1507		1593
1508	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1594	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1509		1595
1510	ev_start (EV_A_ (W)w, 1);	1596	ev_start (EV_A_ (W)w, 1);
1511	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1597	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1512	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1598	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1513		1599
1514	if (!((WL)w)->next)	1600	if (!((WL)w)->next)
1515	{	1601	{
1516	#if WIN32	1602	#if _WIN32
1517	signal (w->signum, sighandler);	1603	signal (w->signum, sighandler);
1518	#else	1604	#else
1519	struct sigaction sa;	1605	struct sigaction sa;
1520	sa.sa_handler = sighandler;	1606	sa.sa_handler = sighandler;
1521	sigfillset (&sa.sa_mask);	1607	sigfillset (&sa.sa_mask);
…		…
1524	#endif	1610	#endif
1525	}	1611	}
1526	}	1612	}
1527		1613
1528	void	1614	void
1529	ev_signal_stop (EV_P_ struct ev_signal *w)	1615	ev_signal_stop (EV_P_ ev_signal *w)
1530	{	1616	{
1531	ev_clear_pending (EV_A_ (W)w);	1617	ev_clear_pending (EV_A_ (W)w);
1532	if (!ev_is_active (w))	1618	if (expect_false (!ev_is_active (w)))
1533	return;	1619	return;
1534		1620
1535	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1621	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1536	ev_stop (EV_A_ (W)w);	1622	ev_stop (EV_A_ (W)w);
1537		1623
1538	if (!signals [w->signum - 1].head)	1624	if (!signals [w->signum - 1].head)
1539	signal (w->signum, SIG_DFL);	1625	signal (w->signum, SIG_DFL);
1540	}	1626	}
1541		1627
1542	void	1628	void
1543	ev_child_start (EV_P_ struct ev_child *w)	1629	ev_child_start (EV_P_ ev_child *w)
1544	{	1630	{
1545	#if EV_MULTIPLICITY	1631	#if EV_MULTIPLICITY
1546	assert (("child watchers are only supported in the default loop", loop == default_loop));	1632	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1547	#endif	1633	#endif
1548	if (ev_is_active (w))	1634	if (expect_false (ev_is_active (w)))
1549	return;	1635	return;
1550		1636
1551	ev_start (EV_A_ (W)w, 1);	1637	ev_start (EV_A_ (W)w, 1);
1552	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1638	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1553	}	1639	}
1554		1640
1555	void	1641	void
1556	ev_child_stop (EV_P_ struct ev_child *w)	1642	ev_child_stop (EV_P_ ev_child *w)
1557	{	1643	{
1558	ev_clear_pending (EV_A_ (W)w);	1644	ev_clear_pending (EV_A_ (W)w);
1559	if (!ev_is_active (w))	1645	if (expect_false (!ev_is_active (w)))
1560	return;	1646	return;
1561		1647
1562	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1648	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1563	ev_stop (EV_A_ (W)w);	1649	ev_stop (EV_A_ (W)w);
1564	}	1650	}
1565		1651
		1652	#if EV_STAT_ENABLE
		1653
		1654	# ifdef _WIN32
		1655	# undef lstat
		1656	# define lstat(a,b) _stati64 (a,b)
		1657	# endif
		1658
		1659	#define DEF_STAT_INTERVAL 5.0074891
		1660	#define MIN_STAT_INTERVAL 0.1074891
		1661
		1662	void
		1663	ev_stat_stat (EV_P_ ev_stat *w)
		1664	{
		1665	if (lstat (w->path, &w->attr) < 0)
		1666	w->attr.st_nlink = 0;
		1667	else if (!w->attr.st_nlink)
		1668	w->attr.st_nlink = 1;
		1669	}
		1670
		1671	static void
		1672	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1673	{
		1674	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1675
		1676	/* we copy this here each the time so that */
		1677	/* prev has the old value when the callback gets invoked */
		1678	w->prev = w->attr;
		1679	ev_stat_stat (EV_A_ w);
		1680
		1681	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1682	ev_feed_event (EV_A_ w, EV_STAT);
		1683	}
		1684
		1685	void
		1686	ev_stat_start (EV_P_ ev_stat *w)
		1687	{
		1688	if (expect_false (ev_is_active (w)))
		1689	return;
		1690
		1691	/* since we use memcmp, we need to clear any padding data etc. */
		1692	memset (&w->prev, 0, sizeof (ev_statdata));
		1693	memset (&w->attr, 0, sizeof (ev_statdata));
		1694
		1695	ev_stat_stat (EV_A_ w);
		1696
		1697	if (w->interval < MIN_STAT_INTERVAL)
		1698	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1699
		1700	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1701	ev_set_priority (&w->timer, ev_priority (w));
		1702	ev_timer_start (EV_A_ &w->timer);
		1703
		1704	ev_start (EV_A_ (W)w, 1);
		1705	}
		1706
		1707	void
		1708	ev_stat_stop (EV_P_ ev_stat *w)
		1709	{
		1710	ev_clear_pending (EV_A_ (W)w);
		1711	if (expect_false (!ev_is_active (w)))
		1712	return;
		1713
		1714	ev_timer_stop (EV_A_ &w->timer);
		1715
		1716	ev_stop (EV_A_ (W)w);
		1717	}
		1718	#endif
		1719
		1720	void
		1721	ev_idle_start (EV_P_ ev_idle *w)
		1722	{
		1723	if (expect_false (ev_is_active (w)))
		1724	return;
		1725
		1726	ev_start (EV_A_ (W)w, ++idlecnt);
		1727	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1728	idles [idlecnt - 1] = w;
		1729	}
		1730
		1731	void
		1732	ev_idle_stop (EV_P_ ev_idle *w)
		1733	{
		1734	ev_clear_pending (EV_A_ (W)w);
		1735	if (expect_false (!ev_is_active (w)))
		1736	return;
		1737
		1738	{
		1739	int active = ((W)w)->active;
		1740	idles [active - 1] = idles [--idlecnt];
		1741	((W)idles [active - 1])->active = active;
		1742	}
		1743
		1744	ev_stop (EV_A_ (W)w);
		1745	}
		1746
		1747	void
		1748	ev_prepare_start (EV_P_ ev_prepare *w)
		1749	{
		1750	if (expect_false (ev_is_active (w)))
		1751	return;
		1752
		1753	ev_start (EV_A_ (W)w, ++preparecnt);
		1754	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1755	prepares [preparecnt - 1] = w;
		1756	}
		1757
		1758	void
		1759	ev_prepare_stop (EV_P_ ev_prepare *w)
		1760	{
		1761	ev_clear_pending (EV_A_ (W)w);
		1762	if (expect_false (!ev_is_active (w)))
		1763	return;
		1764
		1765	{
		1766	int active = ((W)w)->active;
		1767	prepares [active - 1] = prepares [--preparecnt];
		1768	((W)prepares [active - 1])->active = active;
		1769	}
		1770
		1771	ev_stop (EV_A_ (W)w);
		1772	}
		1773
		1774	void
		1775	ev_check_start (EV_P_ ev_check *w)
		1776	{
		1777	if (expect_false (ev_is_active (w)))
		1778	return;
		1779
		1780	ev_start (EV_A_ (W)w, ++checkcnt);
		1781	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1782	checks [checkcnt - 1] = w;
		1783	}
		1784
		1785	void
		1786	ev_check_stop (EV_P_ ev_check *w)
		1787	{
		1788	ev_clear_pending (EV_A_ (W)w);
		1789	if (expect_false (!ev_is_active (w)))
		1790	return;
		1791
		1792	{
		1793	int active = ((W)w)->active;
		1794	checks [active - 1] = checks [--checkcnt];
		1795	((W)checks [active - 1])->active = active;
		1796	}
		1797
		1798	ev_stop (EV_A_ (W)w);
		1799	}
		1800
		1801	#if EV_EMBED_ENABLE
		1802	void noinline
		1803	ev_embed_sweep (EV_P_ ev_embed *w)
		1804	{
		1805	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1806	}
		1807
		1808	static void
		1809	embed_cb (EV_P_ ev_io *io, int revents)
		1810	{
		1811	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		1812
		1813	if (ev_cb (w))
		1814	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1815	else
		1816	ev_embed_sweep (loop, w);
		1817	}
		1818
		1819	void
		1820	ev_embed_start (EV_P_ ev_embed *w)
		1821	{
		1822	if (expect_false (ev_is_active (w)))
		1823	return;
		1824
		1825	{
		1826	struct ev_loop *loop = w->loop;
		1827	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1828	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1829	}
		1830
		1831	ev_set_priority (&w->io, ev_priority (w));
		1832	ev_io_start (EV_A_ &w->io);
		1833
		1834	ev_start (EV_A_ (W)w, 1);
		1835	}
		1836
		1837	void
		1838	ev_embed_stop (EV_P_ ev_embed *w)
		1839	{
		1840	ev_clear_pending (EV_A_ (W)w);
		1841	if (expect_false (!ev_is_active (w)))
		1842	return;
		1843
		1844	ev_io_stop (EV_A_ &w->io);
		1845
		1846	ev_stop (EV_A_ (W)w);
		1847	}
		1848	#endif
		1849
		1850	#if EV_FORK_ENABLE
		1851	void
		1852	ev_fork_start (EV_P_ ev_fork *w)
		1853	{
		1854	if (expect_false (ev_is_active (w)))
		1855	return;
		1856
		1857	ev_start (EV_A_ (W)w, ++forkcnt);
		1858	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		1859	forks [forkcnt - 1] = w;
		1860	}
		1861
		1862	void
		1863	ev_fork_stop (EV_P_ ev_fork *w)
		1864	{
		1865	ev_clear_pending (EV_A_ (W)w);
		1866	if (expect_false (!ev_is_active (w)))
		1867	return;
		1868
		1869	{
		1870	int active = ((W)w)->active;
		1871	forks [active - 1] = forks [--forkcnt];
		1872	((W)forks [active - 1])->active = active;
		1873	}
		1874
		1875	ev_stop (EV_A_ (W)w);
		1876	}
		1877	#endif
		1878
1566	/*****************************************************************************/	1879	/*****************************************************************************/
1567		1880
1568	struct ev_once	1881	struct ev_once
1569	{	1882	{
1570	struct ev_io io;	1883	ev_io io;
1571	struct ev_timer to;	1884	ev_timer to;
1572	void (*cb)(int revents, void *arg);	1885	void (*cb)(int revents, void *arg);
1573	void *arg;	1886	void *arg;
1574	};	1887	};
1575		1888
1576	static void	1889	static void
…		…
1585		1898
1586	cb (revents, arg);	1899	cb (revents, arg);
1587	}	1900	}
1588		1901
1589	static void	1902	static void
1590	once_cb_io (EV_P_ struct ev_io *w, int revents)	1903	once_cb_io (EV_P_ ev_io *w, int revents)
1591	{	1904	{
1592	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1905	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1593	}	1906	}
1594		1907
1595	static void	1908	static void
1596	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1909	once_cb_to (EV_P_ ev_timer *w, int revents)
1597	{	1910	{
1598	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1911	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1599	}	1912	}
1600		1913
1601	void	1914	void
1602	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1915	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1603	{	1916	{
1604	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	1917	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1605		1918
1606	if (!once)	1919	if (expect_false (!once))
		1920	{
1607	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1921	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1608	else	1922	return;
1609	{	1923	}
		1924
1610	once->cb = cb;	1925	once->cb = cb;
1611	once->arg = arg;	1926	once->arg = arg;
1612		1927
1613	ev_init (&once->io, once_cb_io);	1928	ev_init (&once->io, once_cb_io);
1614	if (fd >= 0)	1929	if (fd >= 0)
1615	{	1930	{
1616	ev_io_set (&once->io, fd, events);	1931	ev_io_set (&once->io, fd, events);
1617	ev_io_start (EV_A_ &once->io);	1932	ev_io_start (EV_A_ &once->io);
1618	}	1933	}
1619		1934
1620	ev_init (&once->to, once_cb_to);	1935	ev_init (&once->to, once_cb_to);
1621	if (timeout >= 0.)	1936	if (timeout >= 0.)
1622	{	1937	{
1623	ev_timer_set (&once->to, timeout, 0.);	1938	ev_timer_set (&once->to, timeout, 0.);
1624	ev_timer_start (EV_A_ &once->to);	1939	ev_timer_start (EV_A_ &once->to);
1625	}
1626	}	1940	}
1627	}	1941	}
1628		1942
1629	#ifdef __cplusplus	1943	#ifdef __cplusplus
1630	}	1944	}

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