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Comparing libev/ev.c (file contents):
Revision 1.100 by root, Sun Nov 11 04:02:54 2007 UTC vs.
Revision 1.141 by root, Mon Nov 26 20:33:58 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
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
112	# else
113	# define EV_USE_WIN32 0
114	# endif
115	#endif
116
117	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
118	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
119	#endif	159	#endif
120		160
121	/**/	161	/**/
122		162
123	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
128	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
129	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
130	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
131	#endif	171	#endif
132		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
133	/**/	177	/**/
134		178
135	#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) */
136	#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) */
137	#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 */
138	/*#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 */
139		183
140	#ifdef EV_H	184	#ifdef EV_H
141	# include EV_H	185	# include EV_H
142	#else	186	#else
143	# include "ev.h"	187	# include "ev.h"
144	#endif	188	#endif
145		189
146	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
147	# 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
148	# 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
149	#else	200	#else
150	# define expect(expr,value) (expr)	201	# define expect(expr,value) (expr)
151	# define inline static	202	# define inline_speed static
		203	# define inline_minimal static
		204	# define noinline
152	#endif	205	#endif
153		206
154	#define expect_false(expr) expect ((expr) != 0, 0)	207	#define expect_false(expr) expect ((expr) != 0, 0)
155	#define expect_true(expr) expect ((expr) != 0, 1)	208	#define expect_true(expr) expect ((expr) != 0, 1)
156		209
157	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
158	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
159		212
		213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		214	#define EMPTY2(a,b) /* used to suppress some warnings */
		215
160	typedef struct ev_watcher *W;	216	typedef ev_watcher *W;
161	typedef struct ev_watcher_list *WL;	217	typedef ev_watcher_list *WL;
162	typedef struct ev_watcher_time *WT;	218	typedef ev_watcher_time *WT;
163		219
164	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
165		221
166	#ifdef WIN32	222	#ifdef _WIN32
167	# include "ev_win32.c"	223	# include "ev_win32.c"
168	#endif	224	#endif
169		225
170	/*****************************************************************************/	226	/*****************************************************************************/
171		227
172	static void (*syserr_cb)(const char *msg);	228	static void (*syserr_cb)(const char *msg);
173		229
		230	void
174	void ev_set_syserr_cb (void (*cb)(const char *msg))	231	ev_set_syserr_cb (void (*cb)(const char *msg))
175	{	232	{
176	syserr_cb = cb;	233	syserr_cb = cb;
177	}	234	}
178		235
179	static void	236	static void noinline
180	syserr (const char *msg)	237	syserr (const char *msg)
181	{	238	{
182	if (!msg)	239	if (!msg)
183	msg = "(libev) system error";	240	msg = "(libev) system error";
184		241
…		…
191	}	248	}
192	}	249	}
193		250
194	static void *(*alloc)(void *ptr, long size);	251	static void *(*alloc)(void *ptr, long size);
195		252
		253	void
196	void ev_set_allocator (void *(*cb)(void *ptr, long size))	254	ev_set_allocator (void *(*cb)(void *ptr, long size))
197	{	255	{
198	alloc = cb;	256	alloc = cb;
199	}	257	}
200		258
201	static void *	259	static void *
…		…
220	typedef struct	278	typedef struct
221	{	279	{
222	WL head;	280	WL head;
223	unsigned char events;	281	unsigned char events;
224	unsigned char reify;	282	unsigned char reify;
		283	#if EV_SELECT_IS_WINSOCKET
		284	SOCKET handle;
		285	#endif
225	} ANFD;	286	} ANFD;
226		287
227	typedef struct	288	typedef struct
228	{	289	{
229	W w;	290	W w;
…		…
240	#include "ev_vars.h"	301	#include "ev_vars.h"
241	#undef VAR	302	#undef VAR
242	};	303	};
243	#include "ev_wrap.h"	304	#include "ev_wrap.h"
244		305
245	struct ev_loop default_loop_struct;	306	static struct ev_loop default_loop_struct;
246	static struct ev_loop *default_loop;	307	struct ev_loop *ev_default_loop_ptr;
247		308
248	#else	309	#else
249		310
250	ev_tstamp ev_rt_now;	311	ev_tstamp ev_rt_now;
251	#define VAR(name,decl) static decl;	312	#define VAR(name,decl) static decl;
252	#include "ev_vars.h"	313	#include "ev_vars.h"
253	#undef VAR	314	#undef VAR
254		315
255	static int default_loop;	316	static int ev_default_loop_ptr;
256		317
257	#endif	318	#endif
258		319
259	/*****************************************************************************/	320	/*****************************************************************************/
260		321
…		…
270	gettimeofday (&tv, 0);	331	gettimeofday (&tv, 0);
271	return tv.tv_sec + tv.tv_usec * 1e-6;	332	return tv.tv_sec + tv.tv_usec * 1e-6;
272	#endif	333	#endif
273	}	334	}
274		335
275	inline ev_tstamp	336	ev_tstamp inline_size
276	get_clock (void)	337	get_clock (void)
277	{	338	{
278	#if EV_USE_MONOTONIC	339	#if EV_USE_MONOTONIC
279	if (expect_true (have_monotonic))	340	if (expect_true (have_monotonic))
280	{	341	{
…		…
293	{	354	{
294	return ev_rt_now;	355	return ev_rt_now;
295	}	356	}
296	#endif	357	#endif
297		358
298	#define array_roundsize(type,n) ((n) | 4 & ~3)	359	#define array_roundsize(type,n) (((n) | 4) & ~3)
299		360
300	#define array_needsize(type,base,cur,cnt,init) \	361	#define array_needsize(type,base,cur,cnt,init) \
301	if (expect_false ((cnt) > cur)) \	362	if (expect_false ((cnt) > cur)) \
302	{ \	363	{ \
303	int newcnt = cur; \	364	int newcnt = cur; \
…		…
318	stem ## max = array_roundsize (stem ## cnt >> 1); \	379	stem ## max = array_roundsize (stem ## cnt >> 1); \
319	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	380	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
320	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	381	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
321	}	382	}
322		383
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) \	384	#define array_free(stem, idx) \
329	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	385	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
330		386
331	/*****************************************************************************/	387	/*****************************************************************************/
332		388
333	static void	389	void noinline
		390	ev_feed_event (EV_P_ void *w, int revents)
		391	{
		392	W w_ = (W)w;
		393
		394	if (expect_false (w_->pending))
		395	{
		396	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		397	return;
		398	}
		399
		400	w_->pending = ++pendingcnt [ABSPRI (w_)];
		401	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		402	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		403	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		404	}
		405
		406	void inline_size
		407	queue_events (EV_P_ W *events, int eventcnt, int type)
		408	{
		409	int i;
		410
		411	for (i = 0; i < eventcnt; ++i)
		412	ev_feed_event (EV_A_ events [i], type);
		413	}
		414
		415	/*****************************************************************************/
		416
		417	void inline_size
334	anfds_init (ANFD *base, int count)	418	anfds_init (ANFD *base, int count)
335	{	419	{
336	while (count--)	420	while (count--)
337	{	421	{
338	base->head = 0;	422	base->head = 0;
…		…
341		425
342	++base;	426	++base;
343	}	427	}
344	}	428	}
345		429
346	void	430	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)	431	fd_event (EV_P_ int fd, int revents)
374	{	432	{
375	ANFD *anfd = anfds + fd;	433	ANFD *anfd = anfds + fd;
376	struct ev_io *w;	434	ev_io *w;
377		435
378	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	436	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
379	{	437	{
380	int ev = w->events & revents;	438	int ev = w->events & revents;
381		439
382	if (ev)	440	if (ev)
383	ev_feed_event (EV_A_ (W)w, ev);	441	ev_feed_event (EV_A_ (W)w, ev);
…		…
388	ev_feed_fd_event (EV_P_ int fd, int revents)	446	ev_feed_fd_event (EV_P_ int fd, int revents)
389	{	447	{
390	fd_event (EV_A_ fd, revents);	448	fd_event (EV_A_ fd, revents);
391	}	449	}
392		450
393	/*****************************************************************************/	451	void inline_size
394
395	static void
396	fd_reify (EV_P)	452	fd_reify (EV_P)
397	{	453	{
398	int i;	454	int i;
399		455
400	for (i = 0; i < fdchangecnt; ++i)	456	for (i = 0; i < fdchangecnt; ++i)
401	{	457	{
402	int fd = fdchanges [i];	458	int fd = fdchanges [i];
403	ANFD *anfd = anfds + fd;	459	ANFD *anfd = anfds + fd;
404	struct ev_io *w;	460	ev_io *w;
405		461
406	int events = 0;	462	int events = 0;
407		463
408	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	464	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
409	events |= w->events;	465	events |= w->events;
410		466
		467	#if EV_SELECT_IS_WINSOCKET
		468	if (events)
		469	{
		470	unsigned long argp;
		471	anfd->handle = _get_osfhandle (fd);
		472	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		473	}
		474	#endif
		475
411	anfd->reify = 0;	476	anfd->reify = 0;
412		477
413	method_modify (EV_A_ fd, anfd->events, events);	478	backend_modify (EV_A_ fd, anfd->events, events);
414	anfd->events = events;	479	anfd->events = events;
415	}	480	}
416		481
417	fdchangecnt = 0;	482	fdchangecnt = 0;
418	}	483	}
419		484
420	static void	485	void inline_size
421	fd_change (EV_P_ int fd)	486	fd_change (EV_P_ int fd)
422	{	487	{
423	if (anfds [fd].reify)	488	if (expect_false (anfds [fd].reify))
424	return;	489	return;
425		490
426	anfds [fd].reify = 1;	491	anfds [fd].reify = 1;
427		492
428	++fdchangecnt;	493	++fdchangecnt;
429	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	494	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
430	fdchanges [fdchangecnt - 1] = fd;	495	fdchanges [fdchangecnt - 1] = fd;
431	}	496	}
432		497
433	static void	498	void inline_speed
434	fd_kill (EV_P_ int fd)	499	fd_kill (EV_P_ int fd)
435	{	500	{
436	struct ev_io *w;	501	ev_io *w;
437		502
438	while ((w = (struct ev_io *)anfds [fd].head))	503	while ((w = (ev_io *)anfds [fd].head))
439	{	504	{
440	ev_io_stop (EV_A_ w);	505	ev_io_stop (EV_A_ w);
441	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	506	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
442	}	507	}
443	}	508	}
444		509
445	static int	510	int inline_size
446	fd_valid (int fd)	511	fd_valid (int fd)
447	{	512	{
448	#ifdef WIN32	513	#ifdef _WIN32
449	return !!win32_get_osfhandle (fd);	514	return _get_osfhandle (fd) != -1;
450	#else	515	#else
451	return fcntl (fd, F_GETFD) != -1;	516	return fcntl (fd, F_GETFD) != -1;
452	#endif	517	#endif
453	}	518	}
454		519
455	/* called on EBADF to verify fds */	520	/* called on EBADF to verify fds */
456	static void	521	static void noinline
457	fd_ebadf (EV_P)	522	fd_ebadf (EV_P)
458	{	523	{
459	int fd;	524	int fd;
460		525
461	for (fd = 0; fd < anfdmax; ++fd)	526	for (fd = 0; fd < anfdmax; ++fd)
…		…
463	if (!fd_valid (fd) == -1 && errno == EBADF)	528	if (!fd_valid (fd) == -1 && errno == EBADF)
464	fd_kill (EV_A_ fd);	529	fd_kill (EV_A_ fd);
465	}	530	}
466		531
467	/* called on ENOMEM in select/poll to kill some fds and retry */	532	/* called on ENOMEM in select/poll to kill some fds and retry */
468	static void	533	static void noinline
469	fd_enomem (EV_P)	534	fd_enomem (EV_P)
470	{	535	{
471	int fd;	536	int fd;
472		537
473	for (fd = anfdmax; fd--; )	538	for (fd = anfdmax; fd--; )
…		…
476	fd_kill (EV_A_ fd);	541	fd_kill (EV_A_ fd);
477	return;	542	return;
478	}	543	}
479	}	544	}
480		545
481	/* usually called after fork if method needs to re-arm all fds from scratch */	546	/* usually called after fork if backend needs to re-arm all fds from scratch */
482	static void	547	static void noinline
483	fd_rearm_all (EV_P)	548	fd_rearm_all (EV_P)
484	{	549	{
485	int fd;	550	int fd;
486		551
487	/* this should be highly optimised to not do anything but set a flag */	552	/* this should be highly optimised to not do anything but set a flag */
…		…
493	}	558	}
494	}	559	}
495		560
496	/*****************************************************************************/	561	/*****************************************************************************/
497		562
498	static void	563	void inline_speed
499	upheap (WT *heap, int k)	564	upheap (WT *heap, int k)
500	{	565	{
501	WT w = heap [k];	566	WT w = heap [k];
502		567
503	while (k && heap [k >> 1]->at > w->at)	568	while (k && heap [k >> 1]->at > w->at)
…		…
510	heap [k] = w;	575	heap [k] = w;
511	((W)heap [k])->active = k + 1;	576	((W)heap [k])->active = k + 1;
512		577
513	}	578	}
514		579
515	static void	580	void inline_speed
516	downheap (WT *heap, int N, int k)	581	downheap (WT *heap, int N, int k)
517	{	582	{
518	WT w = heap [k];	583	WT w = heap [k];
519		584
520	while (k < (N >> 1))	585	while (k < (N >> 1))
…		…
534		599
535	heap [k] = w;	600	heap [k] = w;
536	((W)heap [k])->active = k + 1;	601	((W)heap [k])->active = k + 1;
537	}	602	}
538		603
539	inline void	604	void inline_size
540	adjustheap (WT *heap, int N, int k)	605	adjustheap (WT *heap, int N, int k)
541	{	606	{
542	upheap (heap, k);	607	upheap (heap, k);
543	downheap (heap, N, k);	608	downheap (heap, N, k);
544	}	609	}
…		…
554	static ANSIG *signals;	619	static ANSIG *signals;
555	static int signalmax;	620	static int signalmax;
556		621
557	static int sigpipe [2];	622	static int sigpipe [2];
558	static sig_atomic_t volatile gotsig;	623	static sig_atomic_t volatile gotsig;
559	static struct ev_io sigev;	624	static ev_io sigev;
560		625
561	static void	626	void inline_size
562	signals_init (ANSIG *base, int count)	627	signals_init (ANSIG *base, int count)
563	{	628	{
564	while (count--)	629	while (count--)
565	{	630	{
566	base->head = 0;	631	base->head = 0;
…		…
571	}	636	}
572		637
573	static void	638	static void
574	sighandler (int signum)	639	sighandler (int signum)
575	{	640	{
576	#if WIN32	641	#if _WIN32
577	signal (signum, sighandler);	642	signal (signum, sighandler);
578	#endif	643	#endif
579		644
580	signals [signum - 1].gotsig = 1;	645	signals [signum - 1].gotsig = 1;
581		646
582	if (!gotsig)	647	if (!gotsig)
583	{	648	{
584	int old_errno = errno;	649	int old_errno = errno;
585	gotsig = 1;	650	gotsig = 1;
586	#ifdef WIN32
587	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
588	#else
589	write (sigpipe [1], &signum, 1);	651	write (sigpipe [1], &signum, 1);
590	#endif
591	errno = old_errno;	652	errno = old_errno;
592	}	653	}
593	}	654	}
594		655
595	void	656	void noinline
596	ev_feed_signal_event (EV_P_ int signum)	657	ev_feed_signal_event (EV_P_ int signum)
597	{	658	{
598	WL w;	659	WL w;
599		660
600	#if EV_MULTIPLICITY	661	#if EV_MULTIPLICITY
601	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	662	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
602	#endif	663	#endif
603		664
604	--signum;	665	--signum;
605		666
606	if (signum < 0 || signum >= signalmax)	667	if (signum < 0 || signum >= signalmax)
…		…
611	for (w = signals [signum].head; w; w = w->next)	672	for (w = signals [signum].head; w; w = w->next)
612	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	673	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
613	}	674	}
614		675
615	static void	676	static void
616	sigcb (EV_P_ struct ev_io *iow, int revents)	677	sigcb (EV_P_ ev_io *iow, int revents)
617	{	678	{
618	int signum;	679	int signum;
619		680
620	#ifdef WIN32
621	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
622	#else
623	read (sigpipe [0], &revents, 1);	681	read (sigpipe [0], &revents, 1);
624	#endif
625	gotsig = 0;	682	gotsig = 0;
626		683
627	for (signum = signalmax; signum--; )	684	for (signum = signalmax; signum--; )
628	if (signals [signum].gotsig)	685	if (signals [signum].gotsig)
629	ev_feed_signal_event (EV_A_ signum + 1);	686	ev_feed_signal_event (EV_A_ signum + 1);
630	}	687	}
631		688
632	static void	689	void inline_size
		690	fd_intern (int fd)
		691	{
		692	#ifdef _WIN32
		693	int arg = 1;
		694	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		695	#else
		696	fcntl (fd, F_SETFD, FD_CLOEXEC);
		697	fcntl (fd, F_SETFL, O_NONBLOCK);
		698	#endif
		699	}
		700
		701	static void noinline
633	siginit (EV_P)	702	siginit (EV_P)
634	{	703	{
635	#ifndef WIN32	704	fd_intern (sigpipe [0]);
636	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	705	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		706
644	ev_io_set (&sigev, sigpipe [0], EV_READ);	707	ev_io_set (&sigev, sigpipe [0], EV_READ);
645	ev_io_start (EV_A_ &sigev);	708	ev_io_start (EV_A_ &sigev);
646	ev_unref (EV_A); /* child watcher should not keep loop alive */	709	ev_unref (EV_A); /* child watcher should not keep loop alive */
647	}	710	}
648		711
649	/*****************************************************************************/	712	/*****************************************************************************/
650		713
651	static struct ev_child *childs [PID_HASHSIZE];	714	static ev_child *childs [PID_HASHSIZE];
652		715
653	#ifndef WIN32	716	#ifndef _WIN32
654		717
655	static struct ev_signal childev;	718	static ev_signal childev;
656		719
657	#ifndef WCONTINUED	720	#ifndef WCONTINUED
658	# define WCONTINUED 0	721	# define WCONTINUED 0
659	#endif	722	#endif
660		723
661	static void	724	void inline_speed
662	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	725	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
663	{	726	{
664	struct ev_child *w;	727	ev_child *w;
665		728
666	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	729	for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
667	if (w->pid == pid || !w->pid)	730	if (w->pid == pid || !w->pid)
668	{	731	{
669	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	732	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
670	w->rpid = pid;	733	w->rpid = pid;
671	w->rstatus = status;	734	w->rstatus = status;
672	ev_feed_event (EV_A_ (W)w, EV_CHILD);	735	ev_feed_event (EV_A_ (W)w, EV_CHILD);
673	}	736	}
674	}	737	}
675		738
676	static void	739	static void
677	childcb (EV_P_ struct ev_signal *sw, int revents)	740	childcb (EV_P_ ev_signal *sw, int revents)
678	{	741	{
679	int pid, status;	742	int pid, status;
680		743
681	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	744	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
682	{	745	{
683	/* make sure we are called again until all childs have been reaped */	746	/* make sure we are called again until all childs have been reaped */
		747	/* 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);	748	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
685		749
686	child_reap (EV_A_ sw, pid, pid, status);	750	child_reap (EV_A_ sw, pid, pid, status);
687	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	751	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
688	}	752	}
689	}	753	}
690		754
691	#endif	755	#endif
692		756
693	/*****************************************************************************/	757	/*****************************************************************************/
694		758
		759	#if EV_USE_PORT
		760	# include "ev_port.c"
		761	#endif
695	#if EV_USE_KQUEUE	762	#if EV_USE_KQUEUE
696	# include "ev_kqueue.c"	763	# include "ev_kqueue.c"
697	#endif	764	#endif
698	#if EV_USE_EPOLL	765	#if EV_USE_EPOLL
699	# include "ev_epoll.c"	766	# include "ev_epoll.c"
…		…
716	{	783	{
717	return EV_VERSION_MINOR;	784	return EV_VERSION_MINOR;
718	}	785	}
719		786
720	/* return true if we are running with elevated privileges and should ignore env variables */	787	/* return true if we are running with elevated privileges and should ignore env variables */
721	static int	788	int inline_size
722	enable_secure (void)	789	enable_secure (void)
723	{	790	{
724	#ifdef WIN32	791	#ifdef _WIN32
725	return 0;	792	return 0;
726	#else	793	#else
727	return getuid () != geteuid ()	794	return getuid () != geteuid ()
728	|| getgid () != getegid ();	795	|| getgid () != getegid ();
729	#endif	796	#endif
730	}	797	}
731		798
732	int	799	unsigned int
733	ev_method (EV_P)	800	ev_supported_backends (void)
734	{	801	{
735	return method;	802	unsigned int flags = 0;
		803
		804	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		805	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		806	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		807	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		808	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		809
		810	return flags;
		811	}
		812
		813	unsigned int
		814	ev_recommended_backends (void)
		815	{
		816	unsigned int flags = ev_supported_backends ();
		817
		818	#ifndef __NetBSD__
		819	/* kqueue is borked on everything but netbsd apparently */
		820	/* it usually doesn't work correctly on anything but sockets and pipes */
		821	flags &= ~EVBACKEND_KQUEUE;
		822	#endif
		823	#ifdef __APPLE__
		824	// flags &= ~EVBACKEND_KQUEUE; for documentation
		825	flags &= ~EVBACKEND_POLL;
		826	#endif
		827
		828	return flags;
		829	}
		830
		831	unsigned int
		832	ev_embeddable_backends (void)
		833	{
		834	return EVBACKEND_EPOLL
		835	| EVBACKEND_KQUEUE
		836	| EVBACKEND_PORT;
		837	}
		838
		839	unsigned int
		840	ev_backend (EV_P)
		841	{
		842	return backend;
736	}	843	}
737		844
738	static void	845	static void
739	loop_init (EV_P_ int methods)	846	loop_init (EV_P_ unsigned int flags)
740	{	847	{
741	if (!method)	848	if (!backend)
742	{	849	{
743	#if EV_USE_MONOTONIC	850	#if EV_USE_MONOTONIC
744	{	851	{
745	struct timespec ts;	852	struct timespec ts;
746	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	853	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
751	ev_rt_now = ev_time ();	858	ev_rt_now = ev_time ();
752	mn_now = get_clock ();	859	mn_now = get_clock ();
753	now_floor = mn_now;	860	now_floor = mn_now;
754	rtmn_diff = ev_rt_now - mn_now;	861	rtmn_diff = ev_rt_now - mn_now;
755		862
756	if (methods == EVMETHOD_AUTO)	863	if (!(flags & EVFLAG_NOENV)
757	if (!enable_secure () && getenv ("LIBEV_METHODS"))	864	&& !enable_secure ()
		865	&& getenv ("LIBEV_FLAGS"))
758	methods = atoi (getenv ("LIBEV_METHODS"));	866	flags = atoi (getenv ("LIBEV_FLAGS"));
759	else
760	methods = EVMETHOD_ANY;
761		867
762	method = 0;	868	if (!(flags & 0x0000ffffUL))
763	#if EV_USE_WIN32	869	flags |= ev_recommended_backends ();
764	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	870
		871	backend = 0;
		872	#if EV_USE_PORT
		873	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
765	#endif	874	#endif
766	#if EV_USE_KQUEUE	875	#if EV_USE_KQUEUE
767	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	876	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
768	#endif	877	#endif
769	#if EV_USE_EPOLL	878	#if EV_USE_EPOLL
770	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	879	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
771	#endif	880	#endif
772	#if EV_USE_POLL	881	#if EV_USE_POLL
773	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	882	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
774	#endif	883	#endif
775	#if EV_USE_SELECT	884	#if EV_USE_SELECT
776	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	885	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
777	#endif	886	#endif
778		887
779	ev_init (&sigev, sigcb);	888	ev_init (&sigev, sigcb);
780	ev_set_priority (&sigev, EV_MAXPRI);	889	ev_set_priority (&sigev, EV_MAXPRI);
781	}	890	}
782	}	891	}
783		892
784	void	893	static void
785	loop_destroy (EV_P)	894	loop_destroy (EV_P)
786	{	895	{
787	int i;	896	int i;
788		897
789	#if EV_USE_WIN32	898	#if EV_USE_PORT
790	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	899	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
791	#endif	900	#endif
792	#if EV_USE_KQUEUE	901	#if EV_USE_KQUEUE
793	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	902	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
794	#endif	903	#endif
795	#if EV_USE_EPOLL	904	#if EV_USE_EPOLL
796	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	905	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
797	#endif	906	#endif
798	#if EV_USE_POLL	907	#if EV_USE_POLL
799	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	908	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
800	#endif	909	#endif
801	#if EV_USE_SELECT	910	#if EV_USE_SELECT
802	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	911	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
803	#endif	912	#endif
804		913
805	for (i = NUMPRI; i--; )	914	for (i = NUMPRI; i--; )
806	array_free (pending, [i]);	915	array_free (pending, [i]);
807		916
808	/* have to use the microsoft-never-gets-it-right macro */	917	/* have to use the microsoft-never-gets-it-right macro */
809	array_free_microshit (fdchange);	918	array_free (fdchange, EMPTY0);
810	array_free_microshit (timer);	919	array_free (timer, EMPTY0);
811	#if EV_PERIODICS	920	#if EV_PERIODIC_ENABLE
812	array_free_microshit (periodic);	921	array_free (periodic, EMPTY0);
813	#endif	922	#endif
814	array_free_microshit (idle);	923	array_free (idle, EMPTY0);
815	array_free_microshit (prepare);	924	array_free (prepare, EMPTY0);
816	array_free_microshit (check);	925	array_free (check, EMPTY0);
817		926
818	method = 0;	927	backend = 0;
819	}	928	}
820		929
821	static void	930	static void
822	loop_fork (EV_P)	931	loop_fork (EV_P)
823	{	932	{
		933	#if EV_USE_PORT
		934	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		935	#endif
		936	#if EV_USE_KQUEUE
		937	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		938	#endif
824	#if EV_USE_EPOLL	939	#if EV_USE_EPOLL
825	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	940	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	941	#endif
830		942
831	if (ev_is_active (&sigev))	943	if (ev_is_active (&sigev))
832	{	944	{
833	/* default loop */	945	/* default loop */
…		…
846	postfork = 0;	958	postfork = 0;
847	}	959	}
848		960
849	#if EV_MULTIPLICITY	961	#if EV_MULTIPLICITY
850	struct ev_loop *	962	struct ev_loop *
851	ev_loop_new (int methods)	963	ev_loop_new (unsigned int flags)
852	{	964	{
853	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	965	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
854		966
855	memset (loop, 0, sizeof (struct ev_loop));	967	memset (loop, 0, sizeof (struct ev_loop));
856		968
857	loop_init (EV_A_ methods);	969	loop_init (EV_A_ flags);
858		970
859	if (ev_method (EV_A))	971	if (ev_backend (EV_A))
860	return loop;	972	return loop;
861		973
862	return 0;	974	return 0;
863	}	975	}
864		976
…		…
877		989
878	#endif	990	#endif
879		991
880	#if EV_MULTIPLICITY	992	#if EV_MULTIPLICITY
881	struct ev_loop *	993	struct ev_loop *
		994	ev_default_loop_init (unsigned int flags)
882	#else	995	#else
883	int	996	int
		997	ev_default_loop (unsigned int flags)
884	#endif	998	#endif
885	ev_default_loop (int methods)
886	{	999	{
887	if (sigpipe [0] == sigpipe [1])	1000	if (sigpipe [0] == sigpipe [1])
888	if (pipe (sigpipe))	1001	if (pipe (sigpipe))
889	return 0;	1002	return 0;
890		1003
891	if (!default_loop)	1004	if (!ev_default_loop_ptr)
892	{	1005	{
893	#if EV_MULTIPLICITY	1006	#if EV_MULTIPLICITY
894	struct ev_loop *loop = default_loop = &default_loop_struct;	1007	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
895	#else	1008	#else
896	default_loop = 1;	1009	ev_default_loop_ptr = 1;
897	#endif	1010	#endif
898		1011
899	loop_init (EV_A_ methods);	1012	loop_init (EV_A_ flags);
900		1013
901	if (ev_method (EV_A))	1014	if (ev_backend (EV_A))
902	{	1015	{
903	siginit (EV_A);	1016	siginit (EV_A);
904		1017
905	#ifndef WIN32	1018	#ifndef _WIN32
906	ev_signal_init (&childev, childcb, SIGCHLD);	1019	ev_signal_init (&childev, childcb, SIGCHLD);
907	ev_set_priority (&childev, EV_MAXPRI);	1020	ev_set_priority (&childev, EV_MAXPRI);
908	ev_signal_start (EV_A_ &childev);	1021	ev_signal_start (EV_A_ &childev);
909	ev_unref (EV_A); /* child watcher should not keep loop alive */	1022	ev_unref (EV_A); /* child watcher should not keep loop alive */
910	#endif	1023	#endif
911	}	1024	}
912	else	1025	else
913	default_loop = 0;	1026	ev_default_loop_ptr = 0;
914	}	1027	}
915		1028
916	return default_loop;	1029	return ev_default_loop_ptr;
917	}	1030	}
918		1031
919	void	1032	void
920	ev_default_destroy (void)	1033	ev_default_destroy (void)
921	{	1034	{
922	#if EV_MULTIPLICITY	1035	#if EV_MULTIPLICITY
923	struct ev_loop *loop = default_loop;	1036	struct ev_loop *loop = ev_default_loop_ptr;
924	#endif	1037	#endif
925		1038
926	#ifndef WIN32	1039	#ifndef _WIN32
927	ev_ref (EV_A); /* child watcher */	1040	ev_ref (EV_A); /* child watcher */
928	ev_signal_stop (EV_A_ &childev);	1041	ev_signal_stop (EV_A_ &childev);
929	#endif	1042	#endif
930		1043
931	ev_ref (EV_A); /* signal watcher */	1044	ev_ref (EV_A); /* signal watcher */
…		…
939		1052
940	void	1053	void
941	ev_default_fork (void)	1054	ev_default_fork (void)
942	{	1055	{
943	#if EV_MULTIPLICITY	1056	#if EV_MULTIPLICITY
944	struct ev_loop *loop = default_loop;	1057	struct ev_loop *loop = ev_default_loop_ptr;
945	#endif	1058	#endif
946		1059
947	if (method)	1060	if (backend)
948	postfork = 1;	1061	postfork = 1;
949	}	1062	}
950		1063
951	/*****************************************************************************/	1064	/*****************************************************************************/
952		1065
953	static int	1066	int inline_size
954	any_pending (EV_P)	1067	any_pending (EV_P)
955	{	1068	{
956	int pri;	1069	int pri;
957		1070
958	for (pri = NUMPRI; pri--; )	1071	for (pri = NUMPRI; pri--; )
…		…
960	return 1;	1073	return 1;
961		1074
962	return 0;	1075	return 0;
963	}	1076	}
964		1077
965	static void	1078	void inline_speed
966	call_pending (EV_P)	1079	call_pending (EV_P)
967	{	1080	{
968	int pri;	1081	int pri;
969		1082
970	for (pri = NUMPRI; pri--; )	1083	for (pri = NUMPRI; pri--; )
971	while (pendingcnt [pri])	1084	while (pendingcnt [pri])
972	{	1085	{
973	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1086	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
974		1087
975	if (p->w)	1088	if (expect_true (p->w))
976	{	1089	{
		1090	assert (("non-pending watcher on pending list", p->w->pending));
		1091
977	p->w->pending = 0;	1092	p->w->pending = 0;
978	EV_CB_INVOKE (p->w, p->events);	1093	EV_CB_INVOKE (p->w, p->events);
979	}	1094	}
980	}	1095	}
981	}	1096	}
982		1097
983	static void	1098	void inline_size
984	timers_reify (EV_P)	1099	timers_reify (EV_P)
985	{	1100	{
986	while (timercnt && ((WT)timers [0])->at <= mn_now)	1101	while (timercnt && ((WT)timers [0])->at <= mn_now)
987	{	1102	{
988	struct ev_timer *w = timers [0];	1103	ev_timer *w = timers [0];
989		1104
990	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1105	assert (("inactive timer on timer heap detected", ev_is_active (w)));
991		1106
992	/* first reschedule or stop timer */	1107	/* first reschedule or stop timer */
993	if (w->repeat)	1108	if (w->repeat)
…		…
1005		1120
1006	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1121	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1007	}	1122	}
1008	}	1123	}
1009		1124
1010	#if EV_PERIODICS	1125	#if EV_PERIODIC_ENABLE
1011	static void	1126	void inline_size
1012	periodics_reify (EV_P)	1127	periodics_reify (EV_P)
1013	{	1128	{
1014	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1129	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1015	{	1130	{
1016	struct ev_periodic *w = periodics [0];	1131	ev_periodic *w = periodics [0];
1017		1132
1018	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1133	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1019		1134
1020	/* first reschedule or stop timer */	1135	/* first reschedule or stop timer */
1021	if (w->reschedule_cb)	1136	if (w->reschedule_cb)
1022	{	1137	{
1023	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1138	((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));	1139	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1026	downheap ((WT *)periodics, periodiccnt, 0);	1140	downheap ((WT *)periodics, periodiccnt, 0);
1027	}	1141	}
1028	else if (w->interval)	1142	else if (w->interval)
1029	{	1143	{
…		…
1036		1150
1037	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1151	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1038	}	1152	}
1039	}	1153	}
1040		1154
1041	static void	1155	static void noinline
1042	periodics_reschedule (EV_P)	1156	periodics_reschedule (EV_P)
1043	{	1157	{
1044	int i;	1158	int i;
1045		1159
1046	/* adjust periodics after time jump */	1160	/* adjust periodics after time jump */
1047	for (i = 0; i < periodiccnt; ++i)	1161	for (i = 0; i < periodiccnt; ++i)
1048	{	1162	{
1049	struct ev_periodic *w = periodics [i];	1163	ev_periodic *w = periodics [i];
1050		1164
1051	if (w->reschedule_cb)	1165	if (w->reschedule_cb)
1052	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1166	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1053	else if (w->interval)	1167	else if (w->interval)
1054	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1168	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
…		…
1058	for (i = periodiccnt >> 1; i--; )	1172	for (i = periodiccnt >> 1; i--; )
1059	downheap ((WT *)periodics, periodiccnt, i);	1173	downheap ((WT *)periodics, periodiccnt, i);
1060	}	1174	}
1061	#endif	1175	#endif
1062		1176
1063	inline int	1177	int inline_size
1064	time_update_monotonic (EV_P)	1178	time_update_monotonic (EV_P)
1065	{	1179	{
1066	mn_now = get_clock ();	1180	mn_now = get_clock ();
1067		1181
1068	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1182	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
…		…
1076	ev_rt_now = ev_time ();	1190	ev_rt_now = ev_time ();
1077	return 1;	1191	return 1;
1078	}	1192	}
1079	}	1193	}
1080		1194
1081	static void	1195	void inline_size
1082	time_update (EV_P)	1196	time_update (EV_P)
1083	{	1197	{
1084	int i;	1198	int i;
1085		1199
1086	#if EV_USE_MONOTONIC	1200	#if EV_USE_MONOTONIC
…		…
1088	{	1202	{
1089	if (time_update_monotonic (EV_A))	1203	if (time_update_monotonic (EV_A))
1090	{	1204	{
1091	ev_tstamp odiff = rtmn_diff;	1205	ev_tstamp odiff = rtmn_diff;
1092		1206
1093	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1207	/* loop a few times, before making important decisions.
		1208	* on the choice of "4": one iteration isn't enough,
		1209	* in case we get preempted during the calls to
		1210	* ev_time and get_clock. a second call is almost guarenteed
		1211	* to succeed in that case, though. and looping a few more times
		1212	* doesn't hurt either as we only do this on time-jumps or
		1213	* in the unlikely event of getting preempted here.
		1214	*/
		1215	for (i = 4; --i; )
1094	{	1216	{
1095	rtmn_diff = ev_rt_now - mn_now;	1217	rtmn_diff = ev_rt_now - mn_now;
1096		1218
1097	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1219	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1098	return; /* all is well */	1220	return; /* all is well */
…		…
1100	ev_rt_now = ev_time ();	1222	ev_rt_now = ev_time ();
1101	mn_now = get_clock ();	1223	mn_now = get_clock ();
1102	now_floor = mn_now;	1224	now_floor = mn_now;
1103	}	1225	}
1104		1226
1105	# if EV_PERIODICS	1227	# if EV_PERIODIC_ENABLE
1106	periodics_reschedule (EV_A);	1228	periodics_reschedule (EV_A);
1107	# endif	1229	# endif
1108	/* no timer adjustment, as the monotonic clock doesn't jump */	1230	/* no timer adjustment, as the monotonic clock doesn't jump */
1109	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1231	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1110	}	1232	}
…		…
1114	{	1236	{
1115	ev_rt_now = ev_time ();	1237	ev_rt_now = ev_time ();
1116		1238
1117	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1239	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1118	{	1240	{
1119	#if EV_PERIODICS	1241	#if EV_PERIODIC_ENABLE
1120	periodics_reschedule (EV_A);	1242	periodics_reschedule (EV_A);
1121	#endif	1243	#endif
1122		1244
1123	/* adjust timers. this is easy, as the offset is the same for all */	1245	/* adjust timers. this is easy, as the offset is the same for all */
1124	for (i = 0; i < timercnt; ++i)	1246	for (i = 0; i < timercnt; ++i)
…		…
1144	static int loop_done;	1266	static int loop_done;
1145		1267
1146	void	1268	void
1147	ev_loop (EV_P_ int flags)	1269	ev_loop (EV_P_ int flags)
1148	{	1270	{
1149	double block;
1150	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1271	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1272	? EVUNLOOP_ONE
		1273	: EVUNLOOP_CANCEL;
1151		1274
1152	do	1275	while (activecnt)
1153	{	1276	{
1154	/* queue check watchers (and execute them) */	1277	/* queue check watchers (and execute them) */
1155	if (expect_false (preparecnt))	1278	if (expect_false (preparecnt))
1156	{	1279	{
1157	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1280	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1164		1287
1165	/* update fd-related kernel structures */	1288	/* update fd-related kernel structures */
1166	fd_reify (EV_A);	1289	fd_reify (EV_A);
1167		1290
1168	/* calculate blocking time */	1291	/* calculate blocking time */
		1292	{
		1293	double block;
1169		1294
1170	/* we only need this for !monotonic clock or timers, but as we basically	1295	if (flags & EVLOOP_NONBLOCK || idlecnt)
1171	always have timers, we just calculate it always */	1296	block = 0.; /* do not block at all */
		1297	else
		1298	{
		1299	/* update time to cancel out callback processing overhead */
1172	#if EV_USE_MONOTONIC	1300	#if EV_USE_MONOTONIC
1173	if (expect_true (have_monotonic))	1301	if (expect_true (have_monotonic))
1174	time_update_monotonic (EV_A);	1302	time_update_monotonic (EV_A);
1175	else	1303	else
1176	#endif	1304	#endif
1177	{	1305	{
1178	ev_rt_now = ev_time ();	1306	ev_rt_now = ev_time ();
1179	mn_now = ev_rt_now;	1307	mn_now = ev_rt_now;
1180	}	1308	}
1181		1309
1182	if (flags & EVLOOP_NONBLOCK || idlecnt)
1183	block = 0.;
1184	else
1185	{
1186	block = MAX_BLOCKTIME;	1310	block = MAX_BLOCKTIME;
1187		1311
1188	if (timercnt)	1312	if (timercnt)
1189	{	1313	{
1190	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1314	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1191	if (block > to) block = to;	1315	if (block > to) block = to;
1192	}	1316	}
1193		1317
1194	#if EV_PERIODICS	1318	#if EV_PERIODIC_ENABLE
1195	if (periodiccnt)	1319	if (periodiccnt)
1196	{	1320	{
1197	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1321	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1198	if (block > to) block = to;	1322	if (block > to) block = to;
1199	}	1323	}
1200	#endif	1324	#endif
1201		1325
1202	if (block < 0.) block = 0.;	1326	if (expect_false (block < 0.)) block = 0.;
1203	}	1327	}
1204		1328
1205	method_poll (EV_A_ block);	1329	backend_poll (EV_A_ block);
		1330	}
1206		1331
1207	/* update ev_rt_now, do magic */	1332	/* update ev_rt_now, do magic */
1208	time_update (EV_A);	1333	time_update (EV_A);
1209		1334
1210	/* queue pending timers and reschedule them */	1335	/* queue pending timers and reschedule them */
1211	timers_reify (EV_A); /* relative timers called last */	1336	timers_reify (EV_A); /* relative timers called last */
1212	#if EV_PERIODICS	1337	#if EV_PERIODIC_ENABLE
1213	periodics_reify (EV_A); /* absolute timers called first */	1338	periodics_reify (EV_A); /* absolute timers called first */
1214	#endif	1339	#endif
1215		1340
1216	/* queue idle watchers unless io or timers are pending */	1341	/* queue idle watchers unless other events are pending */
1217	if (idlecnt && !any_pending (EV_A))	1342	if (idlecnt && !any_pending (EV_A))
1218	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1343	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1219		1344
1220	/* queue check watchers, to be executed first */	1345	/* queue check watchers, to be executed first */
1221	if (checkcnt)	1346	if (expect_false (checkcnt))
1222	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1347	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1223		1348
1224	call_pending (EV_A);	1349	call_pending (EV_A);
1225	}
1226	while (activecnt && !loop_done);
1227		1350
1228	if (loop_done != 2)	1351	if (expect_false (loop_done))
1229	loop_done = 0;	1352	break;
		1353	}
		1354
		1355	if (loop_done == EVUNLOOP_ONE)
		1356	loop_done = EVUNLOOP_CANCEL;
1230	}	1357	}
1231		1358
1232	void	1359	void
1233	ev_unloop (EV_P_ int how)	1360	ev_unloop (EV_P_ int how)
1234	{	1361	{
1235	loop_done = how;	1362	loop_done = how;
1236	}	1363	}
1237		1364
1238	/*****************************************************************************/	1365	/*****************************************************************************/
1239		1366
1240	inline void	1367	void inline_size
1241	wlist_add (WL *head, WL elem)	1368	wlist_add (WL *head, WL elem)
1242	{	1369	{
1243	elem->next = *head;	1370	elem->next = *head;
1244	*head = elem;	1371	*head = elem;
1245	}	1372	}
1246		1373
1247	inline void	1374	void inline_size
1248	wlist_del (WL *head, WL elem)	1375	wlist_del (WL *head, WL elem)
1249	{	1376	{
1250	while (*head)	1377	while (*head)
1251	{	1378	{
1252	if (*head == elem)	1379	if (*head == elem)
…		…
1257		1384
1258	head = &(*head)->next;	1385	head = &(*head)->next;
1259	}	1386	}
1260	}	1387	}
1261		1388
1262	inline void	1389	void inline_speed
1263	ev_clear_pending (EV_P_ W w)	1390	ev_clear_pending (EV_P_ W w)
1264	{	1391	{
1265	if (w->pending)	1392	if (w->pending)
1266	{	1393	{
1267	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1394	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1268	w->pending = 0;	1395	w->pending = 0;
1269	}	1396	}
1270	}	1397	}
1271		1398
1272	inline void	1399	void inline_speed
1273	ev_start (EV_P_ W w, int active)	1400	ev_start (EV_P_ W w, int active)
1274	{	1401	{
1275	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1402	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1276	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1403	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1277		1404
1278	w->active = active;	1405	w->active = active;
1279	ev_ref (EV_A);	1406	ev_ref (EV_A);
1280	}	1407	}
1281		1408
1282	inline void	1409	void inline_size
1283	ev_stop (EV_P_ W w)	1410	ev_stop (EV_P_ W w)
1284	{	1411	{
1285	ev_unref (EV_A);	1412	ev_unref (EV_A);
1286	w->active = 0;	1413	w->active = 0;
1287	}	1414	}
1288		1415
1289	/*****************************************************************************/	1416	/*****************************************************************************/
1290		1417
1291	void	1418	void
1292	ev_io_start (EV_P_ struct ev_io *w)	1419	ev_io_start (EV_P_ ev_io *w)
1293	{	1420	{
1294	int fd = w->fd;	1421	int fd = w->fd;
1295		1422
1296	if (ev_is_active (w))	1423	if (expect_false (ev_is_active (w)))
1297	return;	1424	return;
1298		1425
1299	assert (("ev_io_start called with negative fd", fd >= 0));	1426	assert (("ev_io_start called with negative fd", fd >= 0));
1300		1427
1301	ev_start (EV_A_ (W)w, 1);	1428	ev_start (EV_A_ (W)w, 1);
…		…
1304		1431
1305	fd_change (EV_A_ fd);	1432	fd_change (EV_A_ fd);
1306	}	1433	}
1307		1434
1308	void	1435	void
1309	ev_io_stop (EV_P_ struct ev_io *w)	1436	ev_io_stop (EV_P_ ev_io *w)
1310	{	1437	{
1311	ev_clear_pending (EV_A_ (W)w);	1438	ev_clear_pending (EV_A_ (W)w);
1312	if (!ev_is_active (w))	1439	if (expect_false (!ev_is_active (w)))
1313	return;	1440	return;
1314		1441
1315	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1442	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1316		1443
1317	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1444	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
…		…
1319		1446
1320	fd_change (EV_A_ w->fd);	1447	fd_change (EV_A_ w->fd);
1321	}	1448	}
1322		1449
1323	void	1450	void
1324	ev_timer_start (EV_P_ struct ev_timer *w)	1451	ev_timer_start (EV_P_ ev_timer *w)
1325	{	1452	{
1326	if (ev_is_active (w))	1453	if (expect_false (ev_is_active (w)))
1327	return;	1454	return;
1328		1455
1329	((WT)w)->at += mn_now;	1456	((WT)w)->at += mn_now;
1330		1457
1331	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1458	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1332		1459
1333	ev_start (EV_A_ (W)w, ++timercnt);	1460	ev_start (EV_A_ (W)w, ++timercnt);
1334	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1461	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1335	timers [timercnt - 1] = w;	1462	timers [timercnt - 1] = w;
1336	upheap ((WT *)timers, timercnt - 1);	1463	upheap ((WT *)timers, timercnt - 1);
1337		1464
1338	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1465	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1339	}	1466	}
1340		1467
1341	void	1468	void
1342	ev_timer_stop (EV_P_ struct ev_timer *w)	1469	ev_timer_stop (EV_P_ ev_timer *w)
1343	{	1470	{
1344	ev_clear_pending (EV_A_ (W)w);	1471	ev_clear_pending (EV_A_ (W)w);
1345	if (!ev_is_active (w))	1472	if (expect_false (!ev_is_active (w)))
1346	return;	1473	return;
1347		1474
1348	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1475	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1349		1476
1350	if (((W)w)->active < timercnt--)	1477	if (expect_true (((W)w)->active < timercnt--))
1351	{	1478	{
1352	timers [((W)w)->active - 1] = timers [timercnt];	1479	timers [((W)w)->active - 1] = timers [timercnt];
1353	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1480	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1354	}	1481	}
1355		1482
…		…
1357		1484
1358	ev_stop (EV_A_ (W)w);	1485	ev_stop (EV_A_ (W)w);
1359	}	1486	}
1360		1487
1361	void	1488	void
1362	ev_timer_again (EV_P_ struct ev_timer *w)	1489	ev_timer_again (EV_P_ ev_timer *w)
1363	{	1490	{
1364	if (ev_is_active (w))	1491	if (ev_is_active (w))
1365	{	1492	{
1366	if (w->repeat)	1493	if (w->repeat)
1367	{	1494	{
…		…
1370	}	1497	}
1371	else	1498	else
1372	ev_timer_stop (EV_A_ w);	1499	ev_timer_stop (EV_A_ w);
1373	}	1500	}
1374	else if (w->repeat)	1501	else if (w->repeat)
		1502	{
		1503	w->at = w->repeat;
1375	ev_timer_start (EV_A_ w);	1504	ev_timer_start (EV_A_ w);
		1505	}
1376	}	1506	}
1377		1507
1378	#if EV_PERIODICS	1508	#if EV_PERIODIC_ENABLE
1379	void	1509	void
1380	ev_periodic_start (EV_P_ struct ev_periodic *w)	1510	ev_periodic_start (EV_P_ ev_periodic *w)
1381	{	1511	{
1382	if (ev_is_active (w))	1512	if (expect_false (ev_is_active (w)))
1383	return;	1513	return;
1384		1514
1385	if (w->reschedule_cb)	1515	if (w->reschedule_cb)
1386	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1516	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1387	else if (w->interval)	1517	else if (w->interval)
…		…
1390	/* this formula differs from the one in periodic_reify because we do not always round up */	1520	/* 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;	1521	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1392	}	1522	}
1393		1523
1394	ev_start (EV_A_ (W)w, ++periodiccnt);	1524	ev_start (EV_A_ (W)w, ++periodiccnt);
1395	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1525	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1396	periodics [periodiccnt - 1] = w;	1526	periodics [periodiccnt - 1] = w;
1397	upheap ((WT *)periodics, periodiccnt - 1);	1527	upheap ((WT *)periodics, periodiccnt - 1);
1398		1528
1399	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1529	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1400	}	1530	}
1401		1531
1402	void	1532	void
1403	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1533	ev_periodic_stop (EV_P_ ev_periodic *w)
1404	{	1534	{
1405	ev_clear_pending (EV_A_ (W)w);	1535	ev_clear_pending (EV_A_ (W)w);
1406	if (!ev_is_active (w))	1536	if (expect_false (!ev_is_active (w)))
1407	return;	1537	return;
1408		1538
1409	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1539	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1410		1540
1411	if (((W)w)->active < periodiccnt--)	1541	if (expect_true (((W)w)->active < periodiccnt--))
1412	{	1542	{
1413	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1543	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1414	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1544	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1415	}	1545	}
1416		1546
1417	ev_stop (EV_A_ (W)w);	1547	ev_stop (EV_A_ (W)w);
1418	}	1548	}
1419		1549
1420	void	1550	void
1421	ev_periodic_again (EV_P_ struct ev_periodic *w)	1551	ev_periodic_again (EV_P_ ev_periodic *w)
1422	{	1552	{
1423	/* TODO: use adjustheap and recalculation */	1553	/* TODO: use adjustheap and recalculation */
1424	ev_periodic_stop (EV_A_ w);	1554	ev_periodic_stop (EV_A_ w);
1425	ev_periodic_start (EV_A_ w);	1555	ev_periodic_start (EV_A_ w);
1426	}	1556	}
1427	#endif	1557	#endif
1428		1558
1429	void	1559	void
1430	ev_idle_start (EV_P_ struct ev_idle *w)	1560	ev_idle_start (EV_P_ ev_idle *w)
1431	{	1561	{
1432	if (ev_is_active (w))	1562	if (expect_false (ev_is_active (w)))
1433	return;	1563	return;
1434		1564
1435	ev_start (EV_A_ (W)w, ++idlecnt);	1565	ev_start (EV_A_ (W)w, ++idlecnt);
1436	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));	1566	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1437	idles [idlecnt - 1] = w;	1567	idles [idlecnt - 1] = w;
1438	}	1568	}
1439		1569
1440	void	1570	void
1441	ev_idle_stop (EV_P_ struct ev_idle *w)	1571	ev_idle_stop (EV_P_ ev_idle *w)
1442	{	1572	{
1443	ev_clear_pending (EV_A_ (W)w);	1573	ev_clear_pending (EV_A_ (W)w);
1444	if (ev_is_active (w))	1574	if (expect_false (!ev_is_active (w)))
1445	return;	1575	return;
1446		1576
		1577	{
		1578	int active = ((W)w)->active;
1447	idles [((W)w)->active - 1] = idles [--idlecnt];	1579	idles [active - 1] = idles [--idlecnt];
		1580	((W)idles [active - 1])->active = active;
		1581	}
		1582
1448	ev_stop (EV_A_ (W)w);	1583	ev_stop (EV_A_ (W)w);
1449	}	1584	}
1450		1585
1451	void	1586	void
1452	ev_prepare_start (EV_P_ struct ev_prepare *w)	1587	ev_prepare_start (EV_P_ ev_prepare *w)
1453	{	1588	{
1454	if (ev_is_active (w))	1589	if (expect_false (ev_is_active (w)))
1455	return;	1590	return;
1456		1591
1457	ev_start (EV_A_ (W)w, ++preparecnt);	1592	ev_start (EV_A_ (W)w, ++preparecnt);
1458	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));	1593	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1459	prepares [preparecnt - 1] = w;	1594	prepares [preparecnt - 1] = w;
1460	}	1595	}
1461		1596
1462	void	1597	void
1463	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1598	ev_prepare_stop (EV_P_ ev_prepare *w)
1464	{	1599	{
1465	ev_clear_pending (EV_A_ (W)w);	1600	ev_clear_pending (EV_A_ (W)w);
1466	if (!ev_is_active (w))	1601	if (expect_false (!ev_is_active (w)))
1467	return;	1602	return;
1468		1603
		1604	{
		1605	int active = ((W)w)->active;
1469	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1606	prepares [active - 1] = prepares [--preparecnt];
		1607	((W)prepares [active - 1])->active = active;
		1608	}
		1609
1470	ev_stop (EV_A_ (W)w);	1610	ev_stop (EV_A_ (W)w);
1471	}	1611	}
1472		1612
1473	void	1613	void
1474	ev_check_start (EV_P_ struct ev_check *w)	1614	ev_check_start (EV_P_ ev_check *w)
1475	{	1615	{
1476	if (ev_is_active (w))	1616	if (expect_false (ev_is_active (w)))
1477	return;	1617	return;
1478		1618
1479	ev_start (EV_A_ (W)w, ++checkcnt);	1619	ev_start (EV_A_ (W)w, ++checkcnt);
1480	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));	1620	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1481	checks [checkcnt - 1] = w;	1621	checks [checkcnt - 1] = w;
1482	}	1622	}
1483		1623
1484	void	1624	void
1485	ev_check_stop (EV_P_ struct ev_check *w)	1625	ev_check_stop (EV_P_ ev_check *w)
1486	{	1626	{
1487	ev_clear_pending (EV_A_ (W)w);	1627	ev_clear_pending (EV_A_ (W)w);
1488	if (!ev_is_active (w))	1628	if (expect_false (!ev_is_active (w)))
1489	return;	1629	return;
1490		1630
		1631	{
		1632	int active = ((W)w)->active;
1491	checks [((W)w)->active - 1] = checks [--checkcnt];	1633	checks [active - 1] = checks [--checkcnt];
		1634	((W)checks [active - 1])->active = active;
		1635	}
		1636
1492	ev_stop (EV_A_ (W)w);	1637	ev_stop (EV_A_ (W)w);
1493	}	1638	}
1494		1639
1495	#ifndef SA_RESTART	1640	#ifndef SA_RESTART
1496	# define SA_RESTART 0	1641	# define SA_RESTART 0
1497	#endif	1642	#endif
1498		1643
1499	void	1644	void
1500	ev_signal_start (EV_P_ struct ev_signal *w)	1645	ev_signal_start (EV_P_ ev_signal *w)
1501	{	1646	{
1502	#if EV_MULTIPLICITY	1647	#if EV_MULTIPLICITY
1503	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1648	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1504	#endif	1649	#endif
1505	if (ev_is_active (w))	1650	if (expect_false (ev_is_active (w)))
1506	return;	1651	return;
1507		1652
1508	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1653	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1509		1654
1510	ev_start (EV_A_ (W)w, 1);	1655	ev_start (EV_A_ (W)w, 1);
1511	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1656	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1512	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1657	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1513		1658
1514	if (!((WL)w)->next)	1659	if (!((WL)w)->next)
1515	{	1660	{
1516	#if WIN32	1661	#if _WIN32
1517	signal (w->signum, sighandler);	1662	signal (w->signum, sighandler);
1518	#else	1663	#else
1519	struct sigaction sa;	1664	struct sigaction sa;
1520	sa.sa_handler = sighandler;	1665	sa.sa_handler = sighandler;
1521	sigfillset (&sa.sa_mask);	1666	sigfillset (&sa.sa_mask);
…		…
1524	#endif	1669	#endif
1525	}	1670	}
1526	}	1671	}
1527		1672
1528	void	1673	void
1529	ev_signal_stop (EV_P_ struct ev_signal *w)	1674	ev_signal_stop (EV_P_ ev_signal *w)
1530	{	1675	{
1531	ev_clear_pending (EV_A_ (W)w);	1676	ev_clear_pending (EV_A_ (W)w);
1532	if (!ev_is_active (w))	1677	if (expect_false (!ev_is_active (w)))
1533	return;	1678	return;
1534		1679
1535	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1680	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1536	ev_stop (EV_A_ (W)w);	1681	ev_stop (EV_A_ (W)w);
1537		1682
1538	if (!signals [w->signum - 1].head)	1683	if (!signals [w->signum - 1].head)
1539	signal (w->signum, SIG_DFL);	1684	signal (w->signum, SIG_DFL);
1540	}	1685	}
1541		1686
1542	void	1687	void
1543	ev_child_start (EV_P_ struct ev_child *w)	1688	ev_child_start (EV_P_ ev_child *w)
1544	{	1689	{
1545	#if EV_MULTIPLICITY	1690	#if EV_MULTIPLICITY
1546	assert (("child watchers are only supported in the default loop", loop == default_loop));	1691	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1547	#endif	1692	#endif
1548	if (ev_is_active (w))	1693	if (expect_false (ev_is_active (w)))
1549	return;	1694	return;
1550		1695
1551	ev_start (EV_A_ (W)w, 1);	1696	ev_start (EV_A_ (W)w, 1);
1552	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1697	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1553	}	1698	}
1554		1699
1555	void	1700	void
1556	ev_child_stop (EV_P_ struct ev_child *w)	1701	ev_child_stop (EV_P_ ev_child *w)
1557	{	1702	{
1558	ev_clear_pending (EV_A_ (W)w);	1703	ev_clear_pending (EV_A_ (W)w);
1559	if (!ev_is_active (w))	1704	if (expect_false (!ev_is_active (w)))
1560	return;	1705	return;
1561		1706
1562	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1707	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1563	ev_stop (EV_A_ (W)w);	1708	ev_stop (EV_A_ (W)w);
1564	}	1709	}
1565		1710
		1711	#if EV_EMBED_ENABLE
		1712	void noinline
		1713	ev_embed_sweep (EV_P_ ev_embed *w)
		1714	{
		1715	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1716	}
		1717
		1718	static void
		1719	embed_cb (EV_P_ ev_io *io, int revents)
		1720	{
		1721	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		1722
		1723	if (ev_cb (w))
		1724	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1725	else
		1726	ev_embed_sweep (loop, w);
		1727	}
		1728
		1729	void
		1730	ev_embed_start (EV_P_ ev_embed *w)
		1731	{
		1732	if (expect_false (ev_is_active (w)))
		1733	return;
		1734
		1735	{
		1736	struct ev_loop *loop = w->loop;
		1737	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1738	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1739	}
		1740
		1741	ev_set_priority (&w->io, ev_priority (w));
		1742	ev_io_start (EV_A_ &w->io);
		1743
		1744	ev_start (EV_A_ (W)w, 1);
		1745	}
		1746
		1747	void
		1748	ev_embed_stop (EV_P_ ev_embed *w)
		1749	{
		1750	ev_clear_pending (EV_A_ (W)w);
		1751	if (expect_false (!ev_is_active (w)))
		1752	return;
		1753
		1754	ev_io_stop (EV_A_ &w->io);
		1755
		1756	ev_stop (EV_A_ (W)w);
		1757	}
		1758	#endif
		1759
		1760	#if EV_STAT_ENABLE
		1761
		1762	# ifdef _WIN32
		1763	# define lstat(a,b) stat(a,b)
		1764	# endif
		1765
		1766	void
		1767	ev_stat_stat (EV_P_ ev_stat *w)
		1768	{
		1769	if (lstat (w->path, &w->attr) < 0)
		1770	w->attr.st_nlink = 0;
		1771	else if (!w->attr.st_nlink)
		1772	w->attr.st_nlink = 1;
		1773	}
		1774
		1775	static void
		1776	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1777	{
		1778	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1779
		1780	/* we copy this here each the time so that */
		1781	/* prev has the old value when the callback gets invoked */
		1782	w->prev = w->attr;
		1783	ev_stat_stat (EV_A_ w);
		1784
		1785	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1786	ev_feed_event (EV_A_ w, EV_STAT);
		1787	}
		1788
		1789	void
		1790	ev_stat_start (EV_P_ ev_stat *w)
		1791	{
		1792	if (expect_false (ev_is_active (w)))
		1793	return;
		1794
		1795	/* since we use memcmp, we need to clear any padding data etc. */
		1796	memset (&w->prev, 0, sizeof (ev_statdata));
		1797	memset (&w->attr, 0, sizeof (ev_statdata));
		1798
		1799	ev_stat_stat (EV_A_ w);
		1800
		1801	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1802	ev_set_priority (&w->timer, ev_priority (w));
		1803	ev_timer_start (EV_A_ &w->timer);
		1804
		1805	ev_start (EV_A_ (W)w, 1);
		1806	}
		1807
		1808	void
		1809	ev_stat_stop (EV_P_ ev_stat *w)
		1810	{
		1811	ev_clear_pending (EV_A_ (W)w);
		1812	if (expect_false (!ev_is_active (w)))
		1813	return;
		1814
		1815	ev_timer_stop (EV_A_ &w->timer);
		1816
		1817	ev_stop (EV_A_ (W)w);
		1818	}
		1819	#endif
		1820
1566	/*****************************************************************************/	1821	/*****************************************************************************/
1567		1822
1568	struct ev_once	1823	struct ev_once
1569	{	1824	{
1570	struct ev_io io;	1825	ev_io io;
1571	struct ev_timer to;	1826	ev_timer to;
1572	void (*cb)(int revents, void *arg);	1827	void (*cb)(int revents, void *arg);
1573	void *arg;	1828	void *arg;
1574	};	1829	};
1575		1830
1576	static void	1831	static void
…		…
1585		1840
1586	cb (revents, arg);	1841	cb (revents, arg);
1587	}	1842	}
1588		1843
1589	static void	1844	static void
1590	once_cb_io (EV_P_ struct ev_io *w, int revents)	1845	once_cb_io (EV_P_ ev_io *w, int revents)
1591	{	1846	{
1592	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1847	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1593	}	1848	}
1594		1849
1595	static void	1850	static void
1596	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1851	once_cb_to (EV_P_ ev_timer *w, int revents)
1597	{	1852	{
1598	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1853	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1599	}	1854	}
1600		1855
1601	void	1856	void
1602	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1857	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1603	{	1858	{
1604	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	1859	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1605		1860
1606	if (!once)	1861	if (expect_false (!once))
		1862	{
1607	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1863	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1608	else	1864	return;
1609	{	1865	}
		1866
1610	once->cb = cb;	1867	once->cb = cb;
1611	once->arg = arg;	1868	once->arg = arg;
1612		1869
1613	ev_init (&once->io, once_cb_io);	1870	ev_init (&once->io, once_cb_io);
1614	if (fd >= 0)	1871	if (fd >= 0)
1615	{	1872	{
1616	ev_io_set (&once->io, fd, events);	1873	ev_io_set (&once->io, fd, events);
1617	ev_io_start (EV_A_ &once->io);	1874	ev_io_start (EV_A_ &once->io);
1618	}	1875	}
1619		1876
1620	ev_init (&once->to, once_cb_to);	1877	ev_init (&once->to, once_cb_to);
1621	if (timeout >= 0.)	1878	if (timeout >= 0.)
1622	{	1879	{
1623	ev_timer_set (&once->to, timeout, 0.);	1880	ev_timer_set (&once->to, timeout, 0.);
1624	ev_timer_start (EV_A_ &once->to);	1881	ev_timer_start (EV_A_ &once->to);
1625	}
1626	}	1882	}
1627	}	1883	}
1628		1884
1629	#ifdef __cplusplus	1885	#ifdef __cplusplus
1630	}	1886	}

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