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Comparing libev/ev.c (file contents):
Revision 1.87 by root, Sat Nov 10 03:36:15 2007 UTC vs.
Revision 1.151 by root, Tue Nov 27 19:59:08 2007 UTC

…		…
32	#ifdef __cplusplus	32	#ifdef __cplusplus
33	extern "C" {	33	extern "C" {
34	#endif	34	#endif
35		35
36	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
37	# include "config.h"	40	# include "config.h"
		41	# endif
38		42
39	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
40	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
41	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
42	# endif	57	# endif
43		58
		59	# ifndef EV_USE_SELECT
44	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
45	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
46	# endif	65	# endif
47		66
		67	# ifndef EV_USE_POLL
48	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
49	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
50	# endif	73	# endif
51		74
		75	# ifndef EV_USE_EPOLL
52	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
53	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
54	# endif	81	# endif
55		82
		83	# ifndef EV_USE_KQUEUE
56	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
57	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
58	# endif	97	# endif
59		98
60	#endif	99	#endif
61		100
62	#include <math.h>	101	#include <math.h>
…		…
71	#include <sys/types.h>	110	#include <sys/types.h>
72	#include <time.h>	111	#include <time.h>
73		112
74	#include <signal.h>	113	#include <signal.h>
75		114
76	#ifndef WIN32	115	#ifndef _WIN32
77	# include <unistd.h>
78	# include <sys/time.h>	116	# include <sys/time.h>
79	# include <sys/wait.h>	117	# include <sys/wait.h>
		118	# include <unistd.h>
		119	#else
		120	# define WIN32_LEAN_AND_MEAN
		121	# include <windows.h>
		122	# ifndef EV_SELECT_IS_WINSOCKET
		123	# define EV_SELECT_IS_WINSOCKET 1
80	#endif	124	# endif
		125	#endif
		126
81	/**/	127	/**/
82		128
83	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
84	# define EV_USE_MONOTONIC 1	130	# define EV_USE_MONOTONIC 0
		131	#endif
		132
		133	#ifndef EV_USE_REALTIME
		134	# define EV_USE_REALTIME 0
85	#endif	135	#endif
86		136
87	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
88	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
89	#endif	139	#endif
90		140
91	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
92	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	142	# ifdef _WIN32
		143	# define EV_USE_POLL 0
		144	# else
		145	# define EV_USE_POLL 1
		146	# endif
93	#endif	147	#endif
94		148
95	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
96	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
97	#endif	151	#endif
98		152
99	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
100	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
101	#endif	155	#endif
102		156
103	#ifndef EV_USE_WIN32	157	#ifndef EV_USE_PORT
104	# ifdef WIN32
105	# define EV_USE_WIN32 0 /* it does not exist, use select */
106	# undef EV_USE_SELECT
107	# define EV_USE_SELECT 1	158	# define EV_USE_PORT 0
		159	#endif
		160
		161	#ifndef EV_PID_HASHSIZE
		162	# if EV_MINIMAL
		163	# define EV_PID_HASHSIZE 1
108	# else	164	# else
109	# define EV_USE_WIN32 0	165	# define EV_PID_HASHSIZE 16
110	# endif	166	# endif
111	#endif
112
113	#ifndef EV_USE_REALTIME
114	# define EV_USE_REALTIME 1
115	#endif	167	#endif
116		168
117	/**/	169	/**/
118		170
119	#ifndef CLOCK_MONOTONIC	171	#ifndef CLOCK_MONOTONIC
…		…
124	#ifndef CLOCK_REALTIME	176	#ifndef CLOCK_REALTIME
125	# undef EV_USE_REALTIME	177	# undef EV_USE_REALTIME
126	# define EV_USE_REALTIME 0	178	# define EV_USE_REALTIME 0
127	#endif	179	#endif
128		180
		181	#if EV_SELECT_IS_WINSOCKET
		182	# include <winsock.h>
		183	#endif
		184
129	/**/	185	/**/
130		186
131	#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) */
132	#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) */
133	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
134	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	189	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
135		190
136	#ifdef EV_H	191	#ifdef EV_H
137	# include EV_H	192	# include EV_H
138	#else	193	#else
139	# include "ev.h"	194	# include "ev.h"
140	#endif	195	#endif
141		196
142	#if __GNUC__ >= 3	197	#if __GNUC__ >= 3
143	# 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
144	# 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
145	#else	207	#else
146	# define expect(expr,value) (expr)	208	# define expect(expr,value) (expr)
		209	# define inline_speed static
147	# define inline static	210	# define inline_size static
		211	# define noinline
148	#endif	212	#endif
149		213
150	#define expect_false(expr) expect ((expr) != 0, 0)	214	#define expect_false(expr) expect ((expr) != 0, 0)
151	#define expect_true(expr) expect ((expr) != 0, 1)	215	#define expect_true(expr) expect ((expr) != 0, 1)
152		216
153	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	217	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
154	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	218	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
155		219
		220	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		221	#define EMPTY2(a,b) /* used to suppress some warnings */
		222
156	typedef struct ev_watcher *W;	223	typedef ev_watcher *W;
157	typedef struct ev_watcher_list *WL;	224	typedef ev_watcher_list *WL;
158	typedef struct ev_watcher_time *WT;	225	typedef ev_watcher_time *WT;
159		226
160	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	227	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
161		228
		229	#ifdef _WIN32
162	#include "ev_win32.c"	230	# include "ev_win32.c"
		231	#endif
163		232
164	/*****************************************************************************/	233	/*****************************************************************************/
165		234
166	static void (*syserr_cb)(const char *msg);	235	static void (*syserr_cb)(const char *msg);
167		236
		237	void
168	void ev_set_syserr_cb (void (*cb)(const char *msg))	238	ev_set_syserr_cb (void (*cb)(const char *msg))
169	{	239	{
170	syserr_cb = cb;	240	syserr_cb = cb;
171	}	241	}
172		242
173	static void	243	static void noinline
174	syserr (const char *msg)	244	syserr (const char *msg)
175	{	245	{
176	if (!msg)	246	if (!msg)
177	msg = "(libev) system error";	247	msg = "(libev) system error";
178		248
…		…
183	perror (msg);	253	perror (msg);
184	abort ();	254	abort ();
185	}	255	}
186	}	256	}
187		257
188	static void *(*alloc)(void *ptr, long size);	258	static void *(*alloc)(void *ptr, size_t size) = realloc;
189		259
		260	void
190	void ev_set_allocator (void *(*cb)(void *ptr, long size))	261	ev_set_allocator (void *(*cb)(void *ptr, size_t size))
191	{	262	{
192	alloc = cb;	263	alloc = cb;
193	}	264	}
194		265
195	static void *	266	inline_speed void *
196	ev_realloc (void *ptr, long size)	267	ev_realloc (void *ptr, size_t size)
197	{	268	{
198	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	269	ptr = alloc (ptr, size);
199		270
200	if (!ptr && size)	271	if (!ptr && size)
201	{	272	{
202	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	273	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", (long)size);
203	abort ();	274	abort ();
204	}	275	}
205		276
206	return ptr;	277	return ptr;
207	}	278	}
…		…
214	typedef struct	285	typedef struct
215	{	286	{
216	WL head;	287	WL head;
217	unsigned char events;	288	unsigned char events;
218	unsigned char reify;	289	unsigned char reify;
		290	#if EV_SELECT_IS_WINSOCKET
		291	SOCKET handle;
		292	#endif
219	} ANFD;	293	} ANFD;
220		294
221	typedef struct	295	typedef struct
222	{	296	{
223	W w;	297	W w;
…		…
227	#if EV_MULTIPLICITY	301	#if EV_MULTIPLICITY
228		302
229	struct ev_loop	303	struct ev_loop
230	{	304	{
231	ev_tstamp ev_rt_now;	305	ev_tstamp ev_rt_now;
		306	#define ev_rt_now ((loop)->ev_rt_now)
232	#define VAR(name,decl) decl;	307	#define VAR(name,decl) decl;
233	#include "ev_vars.h"	308	#include "ev_vars.h"
234	#undef VAR	309	#undef VAR
235	};	310	};
236	#include "ev_wrap.h"	311	#include "ev_wrap.h"
237		312
238	struct ev_loop default_loop_struct;	313	static struct ev_loop default_loop_struct;
239	static struct ev_loop *default_loop;	314	struct ev_loop *ev_default_loop_ptr;
240		315
241	#else	316	#else
242		317
243	ev_tstamp ev_rt_now;	318	ev_tstamp ev_rt_now;
244	#define VAR(name,decl) static decl;	319	#define VAR(name,decl) static decl;
245	#include "ev_vars.h"	320	#include "ev_vars.h"
246	#undef VAR	321	#undef VAR
247		322
248	static int default_loop;	323	static int ev_default_loop_ptr;
249		324
250	#endif	325	#endif
251		326
252	/*****************************************************************************/	327	/*****************************************************************************/
253		328
254	inline ev_tstamp	329	ev_tstamp
255	ev_time (void)	330	ev_time (void)
256	{	331	{
257	#if EV_USE_REALTIME	332	#if EV_USE_REALTIME
258	struct timespec ts;	333	struct timespec ts;
259	clock_gettime (CLOCK_REALTIME, &ts);	334	clock_gettime (CLOCK_REALTIME, &ts);
…		…
263	gettimeofday (&tv, 0);	338	gettimeofday (&tv, 0);
264	return tv.tv_sec + tv.tv_usec * 1e-6;	339	return tv.tv_sec + tv.tv_usec * 1e-6;
265	#endif	340	#endif
266	}	341	}
267		342
268	inline ev_tstamp	343	ev_tstamp inline_size
269	get_clock (void)	344	get_clock (void)
270	{	345	{
271	#if EV_USE_MONOTONIC	346	#if EV_USE_MONOTONIC
272	if (expect_true (have_monotonic))	347	if (expect_true (have_monotonic))
273	{	348	{
…		…
286	{	361	{
287	return ev_rt_now;	362	return ev_rt_now;
288	}	363	}
289	#endif	364	#endif
290		365
291	#define array_roundsize(type,n) ((n) | 4 & ~3)	366	#define array_roundsize(type,n) (((n) | 4) & ~3)
292		367
293	#define array_needsize(type,base,cur,cnt,init) \	368	#define array_needsize(type,base,cur,cnt,init) \
294	if (expect_false ((cnt) > cur)) \	369	if (expect_false ((cnt) > cur)) \
295	{ \	370	{ \
296	int newcnt = cur; \	371	int newcnt = cur; \
…		…
311	stem ## max = array_roundsize (stem ## cnt >> 1); \	386	stem ## max = array_roundsize (stem ## cnt >> 1); \
312	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	387	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
313	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	388	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
314	}	389	}
315		390
316	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
317	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
318	#define array_free_microshit(stem) \
319	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
320
321	#define array_free(stem, idx) \	391	#define array_free(stem, idx) \
322	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;
323		393
324	/*****************************************************************************/	394	/*****************************************************************************/
325		395
326	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
327	anfds_init (ANFD *base, int count)	425	anfds_init (ANFD *base, int count)
328	{	426	{
329	while (count--)	427	while (count--)
330	{	428	{
331	base->head = 0;	429	base->head = 0;
…		…
334		432
335	++base;	433	++base;
336	}	434	}
337	}	435	}
338		436
339	void	437	void inline_speed
340	ev_feed_event (EV_P_ void *w, int revents)
341	{
342	W w_ = (W)w;
343
344	if (w_->pending)
345	{
346	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
347	return;
348	}
349
350	w_->pending = ++pendingcnt [ABSPRI (w_)];
351	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
352	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
353	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
354	}
355
356	static void
357	queue_events (EV_P_ W *events, int eventcnt, int type)
358	{
359	int i;
360
361	for (i = 0; i < eventcnt; ++i)
362	ev_feed_event (EV_A_ events [i], type);
363	}
364
365	inline void
366	fd_event (EV_P_ int fd, int revents)	438	fd_event (EV_P_ int fd, int revents)
367	{	439	{
368	ANFD *anfd = anfds + fd;	440	ANFD *anfd = anfds + fd;
369	struct ev_io *w;	441	ev_io *w;
370		442
371	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)
372	{	444	{
373	int ev = w->events & revents;	445	int ev = w->events & revents;
374		446
375	if (ev)	447	if (ev)
376	ev_feed_event (EV_A_ (W)w, ev);	448	ev_feed_event (EV_A_ (W)w, ev);
…		…
381	ev_feed_fd_event (EV_P_ int fd, int revents)	453	ev_feed_fd_event (EV_P_ int fd, int revents)
382	{	454	{
383	fd_event (EV_A_ fd, revents);	455	fd_event (EV_A_ fd, revents);
384	}	456	}
385		457
386	/*****************************************************************************/	458	void inline_size
387
388	static void
389	fd_reify (EV_P)	459	fd_reify (EV_P)
390	{	460	{
391	int i;	461	int i;
392		462
393	for (i = 0; i < fdchangecnt; ++i)	463	for (i = 0; i < fdchangecnt; ++i)
394	{	464	{
395	int fd = fdchanges [i];	465	int fd = fdchanges [i];
396	ANFD *anfd = anfds + fd;	466	ANFD *anfd = anfds + fd;
397	struct ev_io *w;	467	ev_io *w;
398		468
399	int events = 0;	469	int events = 0;
400		470
401	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)
402	events |= w->events;	472	events |= w->events;
403		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
404	anfd->reify = 0;	483	anfd->reify = 0;
405		484
406	method_modify (EV_A_ fd, anfd->events, events);	485	backend_modify (EV_A_ fd, anfd->events, events);
407	anfd->events = events;	486	anfd->events = events;
408	}	487	}
409		488
410	fdchangecnt = 0;	489	fdchangecnt = 0;
411	}	490	}
412		491
413	static void	492	void inline_size
414	fd_change (EV_P_ int fd)	493	fd_change (EV_P_ int fd)
415	{	494	{
416	if (anfds [fd].reify)	495	if (expect_false (anfds [fd].reify))
417	return;	496	return;
418		497
419	anfds [fd].reify = 1;	498	anfds [fd].reify = 1;
420		499
421	++fdchangecnt;	500	++fdchangecnt;
422	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	501	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
423	fdchanges [fdchangecnt - 1] = fd;	502	fdchanges [fdchangecnt - 1] = fd;
424	}	503	}
425		504
426	static void	505	void inline_speed
427	fd_kill (EV_P_ int fd)	506	fd_kill (EV_P_ int fd)
428	{	507	{
429	struct ev_io *w;	508	ev_io *w;
430		509
431	while ((w = (struct ev_io *)anfds [fd].head))	510	while ((w = (ev_io *)anfds [fd].head))
432	{	511	{
433	ev_io_stop (EV_A_ w);	512	ev_io_stop (EV_A_ w);
434	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);
435	}	514	}
436	}	515	}
437		516
438	static int	517	int inline_size
439	fd_valid (int fd)	518	fd_valid (int fd)
440	{	519	{
441	#ifdef WIN32	520	#ifdef _WIN32
442	return !!win32_get_osfhandle (fd);	521	return _get_osfhandle (fd) != -1;
443	#else	522	#else
444	return fcntl (fd, F_GETFD) != -1;	523	return fcntl (fd, F_GETFD) != -1;
445	#endif	524	#endif
446	}	525	}
447		526
448	/* called on EBADF to verify fds */	527	/* called on EBADF to verify fds */
449	static void	528	static void noinline
450	fd_ebadf (EV_P)	529	fd_ebadf (EV_P)
451	{	530	{
452	int fd;	531	int fd;
453		532
454	for (fd = 0; fd < anfdmax; ++fd)	533	for (fd = 0; fd < anfdmax; ++fd)
…		…
456	if (!fd_valid (fd) == -1 && errno == EBADF)	535	if (!fd_valid (fd) == -1 && errno == EBADF)
457	fd_kill (EV_A_ fd);	536	fd_kill (EV_A_ fd);
458	}	537	}
459		538
460	/* 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 */
461	static void	540	static void noinline
462	fd_enomem (EV_P)	541	fd_enomem (EV_P)
463	{	542	{
464	int fd;	543	int fd;
465		544
466	for (fd = anfdmax; fd--; )	545	for (fd = anfdmax; fd--; )
…		…
469	fd_kill (EV_A_ fd);	548	fd_kill (EV_A_ fd);
470	return;	549	return;
471	}	550	}
472	}	551	}
473		552
474	/* 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 */
475	static void	554	static void noinline
476	fd_rearm_all (EV_P)	555	fd_rearm_all (EV_P)
477	{	556	{
478	int fd;	557	int fd;
479		558
480	/* 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 */
…		…
486	}	565	}
487	}	566	}
488		567
489	/*****************************************************************************/	568	/*****************************************************************************/
490		569
491	static void	570	void inline_speed
492	upheap (WT *heap, int k)	571	upheap (WT *heap, int k)
493	{	572	{
494	WT w = heap [k];	573	WT w = heap [k];
495		574
496	while (k && heap [k >> 1]->at > w->at)	575	while (k && heap [k >> 1]->at > w->at)
…		…
503	heap [k] = w;	582	heap [k] = w;
504	((W)heap [k])->active = k + 1;	583	((W)heap [k])->active = k + 1;
505		584
506	}	585	}
507		586
508	static void	587	void inline_speed
509	downheap (WT *heap, int N, int k)	588	downheap (WT *heap, int N, int k)
510	{	589	{
511	WT w = heap [k];	590	WT w = heap [k];
512		591
513	while (k < (N >> 1))	592	while (k < (N >> 1))
…		…
527		606
528	heap [k] = w;	607	heap [k] = w;
529	((W)heap [k])->active = k + 1;	608	((W)heap [k])->active = k + 1;
530	}	609	}
531		610
532	inline void	611	void inline_size
533	adjustheap (WT *heap, int N, int k, ev_tstamp at)	612	adjustheap (WT *heap, int N, int k)
534	{	613	{
535	ev_tstamp old_at = heap [k]->at;	614	upheap (heap, k);
536	heap [k]->at = at;
537
538	if (old_at < at)
539	downheap (heap, N, k);	615	downheap (heap, N, k);
540	else
541	upheap (heap, k);
542	}	616	}
543		617
544	/*****************************************************************************/	618	/*****************************************************************************/
545		619
546	typedef struct	620	typedef struct
…		…
552	static ANSIG *signals;	626	static ANSIG *signals;
553	static int signalmax;	627	static int signalmax;
554		628
555	static int sigpipe [2];	629	static int sigpipe [2];
556	static sig_atomic_t volatile gotsig;	630	static sig_atomic_t volatile gotsig;
557	static struct ev_io sigev;	631	static ev_io sigev;
558		632
559	static void	633	void inline_size
560	signals_init (ANSIG *base, int count)	634	signals_init (ANSIG *base, int count)
561	{	635	{
562	while (count--)	636	while (count--)
563	{	637	{
564	base->head = 0;	638	base->head = 0;
…		…
569	}	643	}
570		644
571	static void	645	static void
572	sighandler (int signum)	646	sighandler (int signum)
573	{	647	{
574	#if WIN32	648	#if _WIN32
575	signal (signum, sighandler);	649	signal (signum, sighandler);
576	#endif	650	#endif
577		651
578	signals [signum - 1].gotsig = 1;	652	signals [signum - 1].gotsig = 1;
579		653
580	if (!gotsig)	654	if (!gotsig)
581	{	655	{
582	int old_errno = errno;	656	int old_errno = errno;
583	gotsig = 1;	657	gotsig = 1;
584	#ifdef WIN32
585	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
586	#else
587	write (sigpipe [1], &signum, 1);	658	write (sigpipe [1], &signum, 1);
588	#endif
589	errno = old_errno;	659	errno = old_errno;
590	}	660	}
591	}	661	}
592		662
593	void	663	void noinline
594	ev_feed_signal_event (EV_P_ int signum)	664	ev_feed_signal_event (EV_P_ int signum)
595	{	665	{
596	WL w;	666	WL w;
597		667
598	#if EV_MULTIPLICITY	668	#if EV_MULTIPLICITY
599	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));
600	#endif	670	#endif
601		671
602	--signum;	672	--signum;
603		673
604	if (signum < 0 || signum >= signalmax)	674	if (signum < 0 || signum >= signalmax)
…		…
609	for (w = signals [signum].head; w; w = w->next)	679	for (w = signals [signum].head; w; w = w->next)
610	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	680	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
611	}	681	}
612		682
613	static void	683	static void
614	sigcb (EV_P_ struct ev_io *iow, int revents)	684	sigcb (EV_P_ ev_io *iow, int revents)
615	{	685	{
616	int signum;	686	int signum;
617		687
618	#ifdef WIN32
619	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
620	#else
621	read (sigpipe [0], &revents, 1);	688	read (sigpipe [0], &revents, 1);
622	#endif
623	gotsig = 0;	689	gotsig = 0;
624		690
625	for (signum = signalmax; signum--; )	691	for (signum = signalmax; signum--; )
626	if (signals [signum].gotsig)	692	if (signals [signum].gotsig)
627	ev_feed_signal_event (EV_A_ signum + 1);	693	ev_feed_signal_event (EV_A_ signum + 1);
628	}	694	}
629		695
630	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
631	siginit (EV_P)	709	siginit (EV_P)
632	{	710	{
633	#ifndef WIN32	711	fd_intern (sigpipe [0]);
634	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	712	fd_intern (sigpipe [1]);
635	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
636
637	/* rather than sort out wether we really need nb, set it */
638	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
639	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
640	#endif
641		713
642	ev_io_set (&sigev, sigpipe [0], EV_READ);	714	ev_io_set (&sigev, sigpipe [0], EV_READ);
643	ev_io_start (EV_A_ &sigev);	715	ev_io_start (EV_A_ &sigev);
644	ev_unref (EV_A); /* child watcher should not keep loop alive */	716	ev_unref (EV_A); /* child watcher should not keep loop alive */
645	}	717	}
646		718
647	/*****************************************************************************/	719	/*****************************************************************************/
648		720
649	static struct ev_child *childs [PID_HASHSIZE];	721	static ev_child *childs [EV_PID_HASHSIZE];
650		722
651	#ifndef WIN32	723	#ifndef _WIN32
652		724
653	static struct ev_signal childev;	725	static ev_signal childev;
654		726
655	#ifndef WCONTINUED	727	void inline_speed
656	# define WCONTINUED 0
657	#endif
658
659	static void
660	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)
661	{	729	{
662	struct ev_child *w;	730	ev_child *w;
663		731
664	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)
665	if (w->pid == pid || !w->pid)	733	if (w->pid == pid || !w->pid)
666	{	734	{
667	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	735	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
668	w->rpid = pid;	736	w->rpid = pid;
669	w->rstatus = status;	737	w->rstatus = status;
670	ev_feed_event (EV_A_ (W)w, EV_CHILD);	738	ev_feed_event (EV_A_ (W)w, EV_CHILD);
671	}	739	}
672	}	740	}
673		741
		742	#ifndef WCONTINUED
		743	# define WCONTINUED 0
		744	#endif
		745
674	static void	746	static void
675	childcb (EV_P_ struct ev_signal *sw, int revents)	747	childcb (EV_P_ ev_signal *sw, int revents)
676	{	748	{
677	int pid, status;	749	int pid, status;
678		750
		751	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
679	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	752	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
680	{	753	if (!WCONTINUED
		754	|| errno != EINVAL
		755	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		756	return;
		757
681	/* 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 */
682	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	760	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
683		761
684	child_reap (EV_A_ sw, pid, pid, status);	762	child_reap (EV_A_ sw, pid, pid, status);
		763	if (EV_PID_HASHSIZE > 1)
685	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 */
686	}
687	}	765	}
688		766
689	#endif	767	#endif
690		768
691	/*****************************************************************************/	769	/*****************************************************************************/
692		770
		771	#if EV_USE_PORT
		772	# include "ev_port.c"
		773	#endif
693	#if EV_USE_KQUEUE	774	#if EV_USE_KQUEUE
694	# include "ev_kqueue.c"	775	# include "ev_kqueue.c"
695	#endif	776	#endif
696	#if EV_USE_EPOLL	777	#if EV_USE_EPOLL
697	# include "ev_epoll.c"	778	# include "ev_epoll.c"
…		…
714	{	795	{
715	return EV_VERSION_MINOR;	796	return EV_VERSION_MINOR;
716	}	797	}
717		798
718	/* 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 */
719	static int	800	int inline_size
720	enable_secure (void)	801	enable_secure (void)
721	{	802	{
722	#ifdef WIN32	803	#ifdef _WIN32
723	return 0;	804	return 0;
724	#else	805	#else
725	return getuid () != geteuid ()	806	return getuid () != geteuid ()
726	|| getgid () != getegid ();	807	|| getgid () != getegid ();
727	#endif	808	#endif
728	}	809	}
729		810
730	int	811	unsigned int
731	ev_method (EV_P)	812	ev_supported_backends (void)
732	{	813	{
733	return method;	814	unsigned int flags = 0;
734	}
735		815
736	static void	816	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
737	loop_init (EV_P_ int methods)	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)
738	{	827	{
739	if (!method)	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;
		855	}
		856
		857	static void noinline
		858	loop_init (EV_P_ unsigned int flags)
		859	{
		860	if (!backend)
740	{	861	{
741	#if EV_USE_MONOTONIC	862	#if EV_USE_MONOTONIC
742	{	863	{
743	struct timespec ts;	864	struct timespec ts;
744	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	865	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
749	ev_rt_now = ev_time ();	870	ev_rt_now = ev_time ();
750	mn_now = get_clock ();	871	mn_now = get_clock ();
751	now_floor = mn_now;	872	now_floor = mn_now;
752	rtmn_diff = ev_rt_now - mn_now;	873	rtmn_diff = ev_rt_now - mn_now;
753		874
754	if (methods == EVMETHOD_AUTO)	875	if (!(flags & EVFLAG_NOENV)
755	if (!enable_secure () && getenv ("LIBEV_METHODS"))	876	&& !enable_secure ()
		877	&& getenv ("LIBEV_FLAGS"))
756	methods = atoi (getenv ("LIBEV_METHODS"));	878	flags = atoi (getenv ("LIBEV_FLAGS"));
757	else
758	methods = EVMETHOD_ANY;
759		879
760	method = 0;	880	if (!(flags & 0x0000ffffUL))
761	#if EV_USE_WIN32	881	flags |= ev_recommended_backends ();
762	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);
763	#endif	886	#endif
764	#if EV_USE_KQUEUE	887	#if EV_USE_KQUEUE
765	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	888	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
766	#endif	889	#endif
767	#if EV_USE_EPOLL	890	#if EV_USE_EPOLL
768	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	891	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
769	#endif	892	#endif
770	#if EV_USE_POLL	893	#if EV_USE_POLL
771	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	894	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
772	#endif	895	#endif
773	#if EV_USE_SELECT	896	#if EV_USE_SELECT
774	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	897	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
775	#endif	898	#endif
776		899
777	ev_init (&sigev, sigcb);	900	ev_init (&sigev, sigcb);
778	ev_set_priority (&sigev, EV_MAXPRI);	901	ev_set_priority (&sigev, EV_MAXPRI);
779	}	902	}
780	}	903	}
781		904
782	void	905	static void noinline
783	loop_destroy (EV_P)	906	loop_destroy (EV_P)
784	{	907	{
785	int i;	908	int i;
786		909
787	#if EV_USE_WIN32	910	#if EV_USE_PORT
788	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	911	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
789	#endif	912	#endif
790	#if EV_USE_KQUEUE	913	#if EV_USE_KQUEUE
791	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	914	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
792	#endif	915	#endif
793	#if EV_USE_EPOLL	916	#if EV_USE_EPOLL
794	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	917	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
795	#endif	918	#endif
796	#if EV_USE_POLL	919	#if EV_USE_POLL
797	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	920	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
798	#endif	921	#endif
799	#if EV_USE_SELECT	922	#if EV_USE_SELECT
800	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	923	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
801	#endif	924	#endif
802		925
803	for (i = NUMPRI; i--; )	926	for (i = NUMPRI; i--; )
804	array_free (pending, [i]);	927	array_free (pending, [i]);
805		928
806	/* have to use the microsoft-never-gets-it-right macro */	929	/* have to use the microsoft-never-gets-it-right macro */
807	array_free_microshit (fdchange);	930	array_free (fdchange, EMPTY0);
808	array_free_microshit (timer);	931	array_free (timer, EMPTY0);
809	array_free_microshit (periodic);	932	#if EV_PERIODIC_ENABLE
810	array_free_microshit (idle);	933	array_free (periodic, EMPTY0);
811	array_free_microshit (prepare);	934	#endif
812	array_free_microshit (check);	935	array_free (idle, EMPTY0);
		936	array_free (prepare, EMPTY0);
		937	array_free (check, EMPTY0);
813		938
814	method = 0;	939	backend = 0;
815	}	940	}
816		941
817	static void	942	void inline_size
818	loop_fork (EV_P)	943	loop_fork (EV_P)
819	{	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
820	#if EV_USE_EPOLL	951	#if EV_USE_EPOLL
821	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	952	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
822	#endif
823	#if EV_USE_KQUEUE
824	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
825	#endif	953	#endif
826		954
827	if (ev_is_active (&sigev))	955	if (ev_is_active (&sigev))
828	{	956	{
829	/* default loop */	957	/* default loop */
…		…
842	postfork = 0;	970	postfork = 0;
843	}	971	}
844		972
845	#if EV_MULTIPLICITY	973	#if EV_MULTIPLICITY
846	struct ev_loop *	974	struct ev_loop *
847	ev_loop_new (int methods)	975	ev_loop_new (unsigned int flags)
848	{	976	{
849	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));
850		978
851	memset (loop, 0, sizeof (struct ev_loop));	979	memset (loop, 0, sizeof (struct ev_loop));
852		980
853	loop_init (EV_A_ methods);	981	loop_init (EV_A_ flags);
854		982
855	if (ev_method (EV_A))	983	if (ev_backend (EV_A))
856	return loop;	984	return loop;
857		985
858	return 0;	986	return 0;
859	}	987	}
860		988
…		…
873		1001
874	#endif	1002	#endif
875		1003
876	#if EV_MULTIPLICITY	1004	#if EV_MULTIPLICITY
877	struct ev_loop *	1005	struct ev_loop *
		1006	ev_default_loop_init (unsigned int flags)
878	#else	1007	#else
879	int	1008	int
		1009	ev_default_loop (unsigned int flags)
880	#endif	1010	#endif
881	ev_default_loop (int methods)
882	{	1011	{
883	if (sigpipe [0] == sigpipe [1])	1012	if (sigpipe [0] == sigpipe [1])
884	if (pipe (sigpipe))	1013	if (pipe (sigpipe))
885	return 0;	1014	return 0;
886		1015
887	if (!default_loop)	1016	if (!ev_default_loop_ptr)
888	{	1017	{
889	#if EV_MULTIPLICITY	1018	#if EV_MULTIPLICITY
890	struct ev_loop *loop = default_loop = &default_loop_struct;	1019	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
891	#else	1020	#else
892	default_loop = 1;	1021	ev_default_loop_ptr = 1;
893	#endif	1022	#endif
894		1023
895	loop_init (EV_A_ methods);	1024	loop_init (EV_A_ flags);
896		1025
897	if (ev_method (EV_A))	1026	if (ev_backend (EV_A))
898	{	1027	{
899	siginit (EV_A);	1028	siginit (EV_A);
900		1029
901	#ifndef WIN32	1030	#ifndef _WIN32
902	ev_signal_init (&childev, childcb, SIGCHLD);	1031	ev_signal_init (&childev, childcb, SIGCHLD);
903	ev_set_priority (&childev, EV_MAXPRI);	1032	ev_set_priority (&childev, EV_MAXPRI);
904	ev_signal_start (EV_A_ &childev);	1033	ev_signal_start (EV_A_ &childev);
905	ev_unref (EV_A); /* child watcher should not keep loop alive */	1034	ev_unref (EV_A); /* child watcher should not keep loop alive */
906	#endif	1035	#endif
907	}	1036	}
908	else	1037	else
909	default_loop = 0;	1038	ev_default_loop_ptr = 0;
910	}	1039	}
911		1040
912	return default_loop;	1041	return ev_default_loop_ptr;
913	}	1042	}
914		1043
915	void	1044	void
916	ev_default_destroy (void)	1045	ev_default_destroy (void)
917	{	1046	{
918	#if EV_MULTIPLICITY	1047	#if EV_MULTIPLICITY
919	struct ev_loop *loop = default_loop;	1048	struct ev_loop *loop = ev_default_loop_ptr;
920	#endif	1049	#endif
921		1050
922	#ifndef WIN32	1051	#ifndef _WIN32
923	ev_ref (EV_A); /* child watcher */	1052	ev_ref (EV_A); /* child watcher */
924	ev_signal_stop (EV_A_ &childev);	1053	ev_signal_stop (EV_A_ &childev);
925	#endif	1054	#endif
926		1055
927	ev_ref (EV_A); /* signal watcher */	1056	ev_ref (EV_A); /* signal watcher */
…		…
935		1064
936	void	1065	void
937	ev_default_fork (void)	1066	ev_default_fork (void)
938	{	1067	{
939	#if EV_MULTIPLICITY	1068	#if EV_MULTIPLICITY
940	struct ev_loop *loop = default_loop;	1069	struct ev_loop *loop = ev_default_loop_ptr;
941	#endif	1070	#endif
942		1071
943	if (method)	1072	if (backend)
944	postfork = 1;	1073	postfork = 1;
945	}	1074	}
946		1075
947	/*****************************************************************************/	1076	/*****************************************************************************/
948		1077
949	static int	1078	int inline_size
950	any_pending (EV_P)	1079	any_pending (EV_P)
951	{	1080	{
952	int pri;	1081	int pri;
953		1082
954	for (pri = NUMPRI; pri--; )	1083	for (pri = NUMPRI; pri--; )
…		…
956	return 1;	1085	return 1;
957		1086
958	return 0;	1087	return 0;
959	}	1088	}
960		1089
961	static void	1090	void inline_speed
962	call_pending (EV_P)	1091	call_pending (EV_P)
963	{	1092	{
964	int pri;	1093	int pri;
965		1094
966	for (pri = NUMPRI; pri--; )	1095	for (pri = NUMPRI; pri--; )
967	while (pendingcnt [pri])	1096	while (pendingcnt [pri])
968	{	1097	{
969	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1098	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
970		1099
971	if (p->w)	1100	if (expect_true (p->w))
972	{	1101	{
		1102	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1103
973	p->w->pending = 0;	1104	p->w->pending = 0;
974	EV_CB_INVOKE (p->w, p->events);	1105	EV_CB_INVOKE (p->w, p->events);
975	}	1106	}
976	}	1107	}
977	}	1108	}
978		1109
979	static void	1110	void inline_size
980	timers_reify (EV_P)	1111	timers_reify (EV_P)
981	{	1112	{
982	while (timercnt && ((WT)timers [0])->at <= mn_now)	1113	while (timercnt && ((WT)timers [0])->at <= mn_now)
983	{	1114	{
984	struct ev_timer *w = timers [0];	1115	ev_timer *w = timers [0];
985		1116
986	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1117	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
987		1118
988	/* first reschedule or stop timer */	1119	/* first reschedule or stop timer */
989	if (w->repeat)	1120	if (w->repeat)
990	{	1121	{
991	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1122	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1123
992	((WT)w)->at = mn_now + w->repeat;	1124	((WT)w)->at += w->repeat;
		1125	if (((WT)w)->at < mn_now)
		1126	((WT)w)->at = mn_now;
		1127
993	downheap ((WT *)timers, timercnt, 0);	1128	downheap ((WT *)timers, timercnt, 0);
994	}	1129	}
995	else	1130	else
996	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1131	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
997		1132
998	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1133	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
999	}	1134	}
1000	}	1135	}
1001		1136
1002	static void	1137	#if EV_PERIODIC_ENABLE
		1138	void inline_size
1003	periodics_reify (EV_P)	1139	periodics_reify (EV_P)
1004	{	1140	{
1005	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1141	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1006	{	1142	{
1007	struct ev_periodic *w = periodics [0];	1143	ev_periodic *w = periodics [0];
1008		1144
1009	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1145	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1010		1146
1011	/* first reschedule or stop timer */	1147	/* first reschedule or stop timer */
1012	if (w->reschedule_cb)	1148	if (w->reschedule_cb)
1013	{	1149	{
1014	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);
1015
1016	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));
1017	downheap ((WT *)periodics, periodiccnt, 0);	1152	downheap ((WT *)periodics, periodiccnt, 0);
1018	}	1153	}
1019	else if (w->interval)	1154	else if (w->interval)
1020	{	1155	{
…		…
1027		1162
1028	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1163	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1029	}	1164	}
1030	}	1165	}
1031		1166
1032	static void	1167	static void noinline
1033	periodics_reschedule (EV_P)	1168	periodics_reschedule (EV_P)
1034	{	1169	{
1035	int i;	1170	int i;
1036		1171
1037	/* adjust periodics after time jump */	1172	/* adjust periodics after time jump */
1038	for (i = 0; i < periodiccnt; ++i)	1173	for (i = 0; i < periodiccnt; ++i)
1039	{	1174	{
1040	struct ev_periodic *w = periodics [i];	1175	ev_periodic *w = periodics [i];
1041		1176
1042	if (w->reschedule_cb)	1177	if (w->reschedule_cb)
1043	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1178	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1044	else if (w->interval)	1179	else if (w->interval)
1045	((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;
…		…
1047		1182
1048	/* now rebuild the heap */	1183	/* now rebuild the heap */
1049	for (i = periodiccnt >> 1; i--; )	1184	for (i = periodiccnt >> 1; i--; )
1050	downheap ((WT *)periodics, periodiccnt, i);	1185	downheap ((WT *)periodics, periodiccnt, i);
1051	}	1186	}
		1187	#endif
1052		1188
1053	inline int	1189	int inline_size
1054	time_update_monotonic (EV_P)	1190	time_update_monotonic (EV_P)
1055	{	1191	{
1056	mn_now = get_clock ();	1192	mn_now = get_clock ();
1057		1193
1058	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1194	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
…		…
1066	ev_rt_now = ev_time ();	1202	ev_rt_now = ev_time ();
1067	return 1;	1203	return 1;
1068	}	1204	}
1069	}	1205	}
1070		1206
1071	static void	1207	void inline_size
1072	time_update (EV_P)	1208	time_update (EV_P)
1073	{	1209	{
1074	int i;	1210	int i;
1075		1211
1076	#if EV_USE_MONOTONIC	1212	#if EV_USE_MONOTONIC
…		…
1078	{	1214	{
1079	if (time_update_monotonic (EV_A))	1215	if (time_update_monotonic (EV_A))
1080	{	1216	{
1081	ev_tstamp odiff = rtmn_diff;	1217	ev_tstamp odiff = rtmn_diff;
1082		1218
1083	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; )
1084	{	1228	{
1085	rtmn_diff = ev_rt_now - mn_now;	1229	rtmn_diff = ev_rt_now - mn_now;
1086		1230
1087	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1231	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1088	return; /* all is well */	1232	return; /* all is well */
…		…
1090	ev_rt_now = ev_time ();	1234	ev_rt_now = ev_time ();
1091	mn_now = get_clock ();	1235	mn_now = get_clock ();
1092	now_floor = mn_now;	1236	now_floor = mn_now;
1093	}	1237	}
1094		1238
		1239	# if EV_PERIODIC_ENABLE
1095	periodics_reschedule (EV_A);	1240	periodics_reschedule (EV_A);
		1241	# endif
1096	/* no timer adjustment, as the monotonic clock doesn't jump */	1242	/* no timer adjustment, as the monotonic clock doesn't jump */
1097	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1243	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1098	}	1244	}
1099	}	1245	}
1100	else	1246	else
…		…
1102	{	1248	{
1103	ev_rt_now = ev_time ();	1249	ev_rt_now = ev_time ();
1104		1250
1105	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))
1106	{	1252	{
		1253	#if EV_PERIODIC_ENABLE
1107	periodics_reschedule (EV_A);	1254	periodics_reschedule (EV_A);
		1255	#endif
1108		1256
1109	/* 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 */
1110	for (i = 0; i < timercnt; ++i)	1258	for (i = 0; i < timercnt; ++i)
1111	((WT)timers [i])->at += ev_rt_now - mn_now;	1259	((WT)timers [i])->at += ev_rt_now - mn_now;
1112	}	1260	}
…		…
1130	static int loop_done;	1278	static int loop_done;
1131		1279
1132	void	1280	void
1133	ev_loop (EV_P_ int flags)	1281	ev_loop (EV_P_ int flags)
1134	{	1282	{
1135	double block;
1136	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1283	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1284	? EVUNLOOP_ONE
		1285	: EVUNLOOP_CANCEL;
1137		1286
1138	do	1287	while (activecnt)
1139	{	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
1140	/* queue check watchers (and execute them) */	1299	/* queue check watchers (and execute them) */
1141	if (expect_false (preparecnt))	1300	if (expect_false (preparecnt))
1142	{	1301	{
1143	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1302	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1144	call_pending (EV_A);	1303	call_pending (EV_A);
…		…
1150		1309
1151	/* update fd-related kernel structures */	1310	/* update fd-related kernel structures */
1152	fd_reify (EV_A);	1311	fd_reify (EV_A);
1153		1312
1154	/* calculate blocking time */	1313	/* calculate blocking time */
		1314	{
		1315	double block;
1155		1316
1156	/* we only need this for !monotonic clock or timers, but as we basically	1317	if (flags & EVLOOP_NONBLOCK || idlecnt)
1157	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 */
1158	#if EV_USE_MONOTONIC	1322	#if EV_USE_MONOTONIC
1159	if (expect_true (have_monotonic))	1323	if (expect_true (have_monotonic))
1160	time_update_monotonic (EV_A);	1324	time_update_monotonic (EV_A);
1161	else	1325	else
1162	#endif	1326	#endif
1163	{	1327	{
1164	ev_rt_now = ev_time ();	1328	ev_rt_now = ev_time ();
1165	mn_now = ev_rt_now;	1329	mn_now = ev_rt_now;
1166	}	1330	}
1167		1331
1168	if (flags & EVLOOP_NONBLOCK || idlecnt)
1169	block = 0.;
1170	else
1171	{
1172	block = MAX_BLOCKTIME;	1332	block = MAX_BLOCKTIME;
1173		1333
1174	if (timercnt)	1334	if (timercnt)
1175	{	1335	{
1176	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1336	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1177	if (block > to) block = to;	1337	if (block > to) block = to;
1178	}	1338	}
1179		1339
		1340	#if EV_PERIODIC_ENABLE
1180	if (periodiccnt)	1341	if (periodiccnt)
1181	{	1342	{
1182	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;
1183	if (block > to) block = to;	1344	if (block > to) block = to;
1184	}	1345	}
		1346	#endif
1185		1347
1186	if (block < 0.) block = 0.;	1348	if (expect_false (block < 0.)) block = 0.;
1187	}	1349	}
1188		1350
1189	method_poll (EV_A_ block);	1351	backend_poll (EV_A_ block);
		1352	}
1190		1353
1191	/* update ev_rt_now, do magic */	1354	/* update ev_rt_now, do magic */
1192	time_update (EV_A);	1355	time_update (EV_A);
1193		1356
1194	/* queue pending timers and reschedule them */	1357	/* queue pending timers and reschedule them */
1195	timers_reify (EV_A); /* relative timers called last */	1358	timers_reify (EV_A); /* relative timers called last */
		1359	#if EV_PERIODIC_ENABLE
1196	periodics_reify (EV_A); /* absolute timers called first */	1360	periodics_reify (EV_A); /* absolute timers called first */
		1361	#endif
1197		1362
1198	/* queue idle watchers unless io or timers are pending */	1363	/* queue idle watchers unless other events are pending */
1199	if (idlecnt && !any_pending (EV_A))	1364	if (idlecnt && !any_pending (EV_A))
1200	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1365	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1201		1366
1202	/* queue check watchers, to be executed first */	1367	/* queue check watchers, to be executed first */
1203	if (checkcnt)	1368	if (expect_false (checkcnt))
1204	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1369	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1205		1370
1206	call_pending (EV_A);	1371	call_pending (EV_A);
1207	}
1208	while (activecnt && !loop_done);
1209		1372
1210	if (loop_done != 2)	1373	if (expect_false (loop_done))
1211	loop_done = 0;	1374	break;
		1375	}
		1376
		1377	if (loop_done == EVUNLOOP_ONE)
		1378	loop_done = EVUNLOOP_CANCEL;
1212	}	1379	}
1213		1380
1214	void	1381	void
1215	ev_unloop (EV_P_ int how)	1382	ev_unloop (EV_P_ int how)
1216	{	1383	{
1217	loop_done = how;	1384	loop_done = how;
1218	}	1385	}
1219		1386
1220	/*****************************************************************************/	1387	/*****************************************************************************/
1221		1388
1222	inline void	1389	void inline_size
1223	wlist_add (WL *head, WL elem)	1390	wlist_add (WL *head, WL elem)
1224	{	1391	{
1225	elem->next = *head;	1392	elem->next = *head;
1226	*head = elem;	1393	*head = elem;
1227	}	1394	}
1228		1395
1229	inline void	1396	void inline_size
1230	wlist_del (WL *head, WL elem)	1397	wlist_del (WL *head, WL elem)
1231	{	1398	{
1232	while (*head)	1399	while (*head)
1233	{	1400	{
1234	if (*head == elem)	1401	if (*head == elem)
…		…
1239		1406
1240	head = &(*head)->next;	1407	head = &(*head)->next;
1241	}	1408	}
1242	}	1409	}
1243		1410
1244	inline void	1411	void inline_speed
1245	ev_clear_pending (EV_P_ W w)	1412	ev_clear_pending (EV_P_ W w)
1246	{	1413	{
1247	if (w->pending)	1414	if (w->pending)
1248	{	1415	{
1249	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1416	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1250	w->pending = 0;	1417	w->pending = 0;
1251	}	1418	}
1252	}	1419	}
1253		1420
1254	inline void	1421	void inline_speed
1255	ev_start (EV_P_ W w, int active)	1422	ev_start (EV_P_ W w, int active)
1256	{	1423	{
1257	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1424	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1258	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1425	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1259		1426
1260	w->active = active;	1427	w->active = active;
1261	ev_ref (EV_A);	1428	ev_ref (EV_A);
1262	}	1429	}
1263		1430
1264	inline void	1431	void inline_size
1265	ev_stop (EV_P_ W w)	1432	ev_stop (EV_P_ W w)
1266	{	1433	{
1267	ev_unref (EV_A);	1434	ev_unref (EV_A);
1268	w->active = 0;	1435	w->active = 0;
1269	}	1436	}
1270		1437
1271	/*****************************************************************************/	1438	/*****************************************************************************/
1272		1439
1273	void	1440	void
1274	ev_io_start (EV_P_ struct ev_io *w)	1441	ev_io_start (EV_P_ ev_io *w)
1275	{	1442	{
1276	int fd = w->fd;	1443	int fd = w->fd;
1277		1444
1278	if (ev_is_active (w))	1445	if (expect_false (ev_is_active (w)))
1279	return;	1446	return;
1280		1447
1281	assert (("ev_io_start called with negative fd", fd >= 0));	1448	assert (("ev_io_start called with negative fd", fd >= 0));
1282		1449
1283	ev_start (EV_A_ (W)w, 1);	1450	ev_start (EV_A_ (W)w, 1);
…		…
1286		1453
1287	fd_change (EV_A_ fd);	1454	fd_change (EV_A_ fd);
1288	}	1455	}
1289		1456
1290	void	1457	void
1291	ev_io_stop (EV_P_ struct ev_io *w)	1458	ev_io_stop (EV_P_ ev_io *w)
1292	{	1459	{
1293	ev_clear_pending (EV_A_ (W)w);	1460	ev_clear_pending (EV_A_ (W)w);
1294	if (!ev_is_active (w))	1461	if (expect_false (!ev_is_active (w)))
1295	return;	1462	return;
		1463
		1464	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1296		1465
1297	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1466	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1298	ev_stop (EV_A_ (W)w);	1467	ev_stop (EV_A_ (W)w);
1299		1468
1300	fd_change (EV_A_ w->fd);	1469	fd_change (EV_A_ w->fd);
1301	}	1470	}
1302		1471
1303	void	1472	void
1304	ev_timer_start (EV_P_ struct ev_timer *w)	1473	ev_timer_start (EV_P_ ev_timer *w)
1305	{	1474	{
1306	if (ev_is_active (w))	1475	if (expect_false (ev_is_active (w)))
1307	return;	1476	return;
1308		1477
1309	((WT)w)->at += mn_now;	1478	((WT)w)->at += mn_now;
1310		1479
1311	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.));
1312		1481
1313	ev_start (EV_A_ (W)w, ++timercnt);	1482	ev_start (EV_A_ (W)w, ++timercnt);
1314	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1483	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1315	timers [timercnt - 1] = w;	1484	timers [timercnt - 1] = w;
1316	upheap ((WT *)timers, timercnt - 1);	1485	upheap ((WT *)timers, timercnt - 1);
1317		1486
		1487	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1488	}
		1489
		1490	void
		1491	ev_timer_stop (EV_P_ ev_timer *w)
		1492	{
		1493	ev_clear_pending (EV_A_ (W)w);
		1494	if (expect_false (!ev_is_active (w)))
		1495	return;
		1496
1318	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1497	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1319	}
1320		1498
1321	void	1499	{
1322	ev_timer_stop (EV_P_ struct ev_timer *w)	1500	int active = ((W)w)->active;
1323	{
1324	ev_clear_pending (EV_A_ (W)w);
1325	if (!ev_is_active (w))
1326	return;
1327		1501
1328	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1502	if (expect_true (--active < --timercnt))
1329
1330	if (((W)w)->active < timercnt--)
1331	{	1503	{
1332	timers [((W)w)->active - 1] = timers [timercnt];	1504	timers [active] = timers [timercnt];
1333	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1505	adjustheap ((WT *)timers, timercnt, active);
1334	}	1506	}
		1507	}
1335		1508
1336	((WT)w)->at = w->repeat;	1509	((WT)w)->at -= mn_now;
1337		1510
1338	ev_stop (EV_A_ (W)w);	1511	ev_stop (EV_A_ (W)w);
1339	}	1512	}
1340		1513
1341	void	1514	void
1342	ev_timer_again (EV_P_ struct ev_timer *w)	1515	ev_timer_again (EV_P_ ev_timer *w)
1343	{	1516	{
1344	if (ev_is_active (w))	1517	if (ev_is_active (w))
1345	{	1518	{
1346	if (w->repeat)	1519	if (w->repeat)
		1520	{
		1521	((WT)w)->at = mn_now + w->repeat;
1347	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1522	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
		1523	}
1348	else	1524	else
1349	ev_timer_stop (EV_A_ w);	1525	ev_timer_stop (EV_A_ w);
1350	}	1526	}
1351	else if (w->repeat)	1527	else if (w->repeat)
		1528	{
		1529	w->at = w->repeat;
1352	ev_timer_start (EV_A_ w);	1530	ev_timer_start (EV_A_ w);
		1531	}
1353	}	1532	}
1354		1533
		1534	#if EV_PERIODIC_ENABLE
1355	void	1535	void
1356	ev_periodic_start (EV_P_ struct ev_periodic *w)	1536	ev_periodic_start (EV_P_ ev_periodic *w)
1357	{	1537	{
1358	if (ev_is_active (w))	1538	if (expect_false (ev_is_active (w)))
1359	return;	1539	return;
1360		1540
1361	if (w->reschedule_cb)	1541	if (w->reschedule_cb)
1362	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1542	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1363	else if (w->interval)	1543	else if (w->interval)
…		…
1366	/* this formula differs from the one in periodic_reify because we do not always round up */	1546	/* this formula differs from the one in periodic_reify because we do not always round up */
1367	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1547	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1368	}	1548	}
1369		1549
1370	ev_start (EV_A_ (W)w, ++periodiccnt);	1550	ev_start (EV_A_ (W)w, ++periodiccnt);
1371	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1551	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1372	periodics [periodiccnt - 1] = w;	1552	periodics [periodiccnt - 1] = w;
1373	upheap ((WT *)periodics, periodiccnt - 1);	1553	upheap ((WT *)periodics, periodiccnt - 1);
1374		1554
		1555	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1556	}
		1557
		1558	void
		1559	ev_periodic_stop (EV_P_ ev_periodic *w)
		1560	{
		1561	ev_clear_pending (EV_A_ (W)w);
		1562	if (expect_false (!ev_is_active (w)))
		1563	return;
		1564
1375	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1565	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1376	}
1377		1566
1378	void	1567	{
1379	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1568	int active = ((W)w)->active;
1380	{
1381	ev_clear_pending (EV_A_ (W)w);
1382	if (!ev_is_active (w))
1383	return;
1384		1569
1385	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1570	if (expect_true (--active < --periodiccnt))
1386
1387	if (((W)w)->active < periodiccnt--)
1388	{	1571	{
1389	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1572	periodics [active] = periodics [periodiccnt];
1390	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1573	adjustheap ((WT *)periodics, periodiccnt, active);
1391	}	1574	}
		1575	}
1392		1576
1393	ev_stop (EV_A_ (W)w);	1577	ev_stop (EV_A_ (W)w);
1394	}	1578	}
1395		1579
1396	void	1580	void
1397	ev_periodic_again (EV_P_ struct ev_periodic *w)	1581	ev_periodic_again (EV_P_ ev_periodic *w)
1398	{	1582	{
1399	/* TODO: use adjustheap and recalculation */	1583	/* TODO: use adjustheap and recalculation */
1400	ev_periodic_stop (EV_A_ w);	1584	ev_periodic_stop (EV_A_ w);
1401	ev_periodic_start (EV_A_ w);	1585	ev_periodic_start (EV_A_ w);
1402	}	1586	}
1403		1587	#endif
1404	void
1405	ev_idle_start (EV_P_ struct ev_idle *w)
1406	{
1407	if (ev_is_active (w))
1408	return;
1409
1410	ev_start (EV_A_ (W)w, ++idlecnt);
1411	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1412	idles [idlecnt - 1] = w;
1413	}
1414
1415	void
1416	ev_idle_stop (EV_P_ struct ev_idle *w)
1417	{
1418	ev_clear_pending (EV_A_ (W)w);
1419	if (ev_is_active (w))
1420	return;
1421
1422	idles [((W)w)->active - 1] = idles [--idlecnt];
1423	ev_stop (EV_A_ (W)w);
1424	}
1425
1426	void
1427	ev_prepare_start (EV_P_ struct ev_prepare *w)
1428	{
1429	if (ev_is_active (w))
1430	return;
1431
1432	ev_start (EV_A_ (W)w, ++preparecnt);
1433	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1434	prepares [preparecnt - 1] = w;
1435	}
1436
1437	void
1438	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1439	{
1440	ev_clear_pending (EV_A_ (W)w);
1441	if (ev_is_active (w))
1442	return;
1443
1444	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1445	ev_stop (EV_A_ (W)w);
1446	}
1447
1448	void
1449	ev_check_start (EV_P_ struct ev_check *w)
1450	{
1451	if (ev_is_active (w))
1452	return;
1453
1454	ev_start (EV_A_ (W)w, ++checkcnt);
1455	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1456	checks [checkcnt - 1] = w;
1457	}
1458
1459	void
1460	ev_check_stop (EV_P_ struct ev_check *w)
1461	{
1462	ev_clear_pending (EV_A_ (W)w);
1463	if (ev_is_active (w))
1464	return;
1465
1466	checks [((W)w)->active - 1] = checks [--checkcnt];
1467	ev_stop (EV_A_ (W)w);
1468	}
1469		1588
1470	#ifndef SA_RESTART	1589	#ifndef SA_RESTART
1471	# define SA_RESTART 0	1590	# define SA_RESTART 0
1472	#endif	1591	#endif
1473		1592
1474	void	1593	void
1475	ev_signal_start (EV_P_ struct ev_signal *w)	1594	ev_signal_start (EV_P_ ev_signal *w)
1476	{	1595	{
1477	#if EV_MULTIPLICITY	1596	#if EV_MULTIPLICITY
1478	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1597	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1479	#endif	1598	#endif
1480	if (ev_is_active (w))	1599	if (expect_false (ev_is_active (w)))
1481	return;	1600	return;
1482		1601
1483	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1602	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1484		1603
1485	ev_start (EV_A_ (W)w, 1);	1604	ev_start (EV_A_ (W)w, 1);
1486	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1605	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1487	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1606	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1488		1607
1489	if (!((WL)w)->next)	1608	if (!((WL)w)->next)
1490	{	1609	{
1491	#if WIN32	1610	#if _WIN32
1492	signal (w->signum, sighandler);	1611	signal (w->signum, sighandler);
1493	#else	1612	#else
1494	struct sigaction sa;	1613	struct sigaction sa;
1495	sa.sa_handler = sighandler;	1614	sa.sa_handler = sighandler;
1496	sigfillset (&sa.sa_mask);	1615	sigfillset (&sa.sa_mask);
…		…
1499	#endif	1618	#endif
1500	}	1619	}
1501	}	1620	}
1502		1621
1503	void	1622	void
1504	ev_signal_stop (EV_P_ struct ev_signal *w)	1623	ev_signal_stop (EV_P_ ev_signal *w)
1505	{	1624	{
1506	ev_clear_pending (EV_A_ (W)w);	1625	ev_clear_pending (EV_A_ (W)w);
1507	if (!ev_is_active (w))	1626	if (expect_false (!ev_is_active (w)))
1508	return;	1627	return;
1509		1628
1510	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1629	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1511	ev_stop (EV_A_ (W)w);	1630	ev_stop (EV_A_ (W)w);
1512		1631
1513	if (!signals [w->signum - 1].head)	1632	if (!signals [w->signum - 1].head)
1514	signal (w->signum, SIG_DFL);	1633	signal (w->signum, SIG_DFL);
1515	}	1634	}
1516		1635
1517	void	1636	void
1518	ev_child_start (EV_P_ struct ev_child *w)	1637	ev_child_start (EV_P_ ev_child *w)
1519	{	1638	{
1520	#if EV_MULTIPLICITY	1639	#if EV_MULTIPLICITY
1521	assert (("child watchers are only supported in the default loop", loop == default_loop));	1640	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1522	#endif	1641	#endif
1523	if (ev_is_active (w))	1642	if (expect_false (ev_is_active (w)))
1524	return;	1643	return;
1525		1644
1526	ev_start (EV_A_ (W)w, 1);	1645	ev_start (EV_A_ (W)w, 1);
1527	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1646	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1528	}	1647	}
1529		1648
1530	void	1649	void
1531	ev_child_stop (EV_P_ struct ev_child *w)	1650	ev_child_stop (EV_P_ ev_child *w)
1532	{	1651	{
1533	ev_clear_pending (EV_A_ (W)w);	1652	ev_clear_pending (EV_A_ (W)w);
1534	if (ev_is_active (w))	1653	if (expect_false (!ev_is_active (w)))
1535	return;	1654	return;
1536		1655
1537	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1656	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1538	ev_stop (EV_A_ (W)w);	1657	ev_stop (EV_A_ (W)w);
1539	}	1658	}
1540		1659
		1660	#if EV_STAT_ENABLE
		1661
		1662	# ifdef _WIN32
		1663	# undef lstat
		1664	# define lstat(a,b) _stati64 (a,b)
		1665	# endif
		1666
		1667	#define DEF_STAT_INTERVAL 5.0074891
		1668	#define MIN_STAT_INTERVAL 0.1074891
		1669
		1670	void
		1671	ev_stat_stat (EV_P_ ev_stat *w)
		1672	{
		1673	if (lstat (w->path, &w->attr) < 0)
		1674	w->attr.st_nlink = 0;
		1675	else if (!w->attr.st_nlink)
		1676	w->attr.st_nlink = 1;
		1677	}
		1678
		1679	static void
		1680	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1681	{
		1682	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1683
		1684	/* we copy this here each the time so that */
		1685	/* prev has the old value when the callback gets invoked */
		1686	w->prev = w->attr;
		1687	ev_stat_stat (EV_A_ w);
		1688
		1689	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1690	ev_feed_event (EV_A_ w, EV_STAT);
		1691	}
		1692
		1693	void
		1694	ev_stat_start (EV_P_ ev_stat *w)
		1695	{
		1696	if (expect_false (ev_is_active (w)))
		1697	return;
		1698
		1699	/* since we use memcmp, we need to clear any padding data etc. */
		1700	memset (&w->prev, 0, sizeof (ev_statdata));
		1701	memset (&w->attr, 0, sizeof (ev_statdata));
		1702
		1703	ev_stat_stat (EV_A_ w);
		1704
		1705	if (w->interval < MIN_STAT_INTERVAL)
		1706	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1707
		1708	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1709	ev_set_priority (&w->timer, ev_priority (w));
		1710	ev_timer_start (EV_A_ &w->timer);
		1711
		1712	ev_start (EV_A_ (W)w, 1);
		1713	}
		1714
		1715	void
		1716	ev_stat_stop (EV_P_ ev_stat *w)
		1717	{
		1718	ev_clear_pending (EV_A_ (W)w);
		1719	if (expect_false (!ev_is_active (w)))
		1720	return;
		1721
		1722	ev_timer_stop (EV_A_ &w->timer);
		1723
		1724	ev_stop (EV_A_ (W)w);
		1725	}
		1726	#endif
		1727
		1728	void
		1729	ev_idle_start (EV_P_ ev_idle *w)
		1730	{
		1731	if (expect_false (ev_is_active (w)))
		1732	return;
		1733
		1734	ev_start (EV_A_ (W)w, ++idlecnt);
		1735	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1736	idles [idlecnt - 1] = w;
		1737	}
		1738
		1739	void
		1740	ev_idle_stop (EV_P_ ev_idle *w)
		1741	{
		1742	ev_clear_pending (EV_A_ (W)w);
		1743	if (expect_false (!ev_is_active (w)))
		1744	return;
		1745
		1746	{
		1747	int active = ((W)w)->active;
		1748	idles [active - 1] = idles [--idlecnt];
		1749	((W)idles [active - 1])->active = active;
		1750	}
		1751
		1752	ev_stop (EV_A_ (W)w);
		1753	}
		1754
		1755	void
		1756	ev_prepare_start (EV_P_ ev_prepare *w)
		1757	{
		1758	if (expect_false (ev_is_active (w)))
		1759	return;
		1760
		1761	ev_start (EV_A_ (W)w, ++preparecnt);
		1762	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1763	prepares [preparecnt - 1] = w;
		1764	}
		1765
		1766	void
		1767	ev_prepare_stop (EV_P_ ev_prepare *w)
		1768	{
		1769	ev_clear_pending (EV_A_ (W)w);
		1770	if (expect_false (!ev_is_active (w)))
		1771	return;
		1772
		1773	{
		1774	int active = ((W)w)->active;
		1775	prepares [active - 1] = prepares [--preparecnt];
		1776	((W)prepares [active - 1])->active = active;
		1777	}
		1778
		1779	ev_stop (EV_A_ (W)w);
		1780	}
		1781
		1782	void
		1783	ev_check_start (EV_P_ ev_check *w)
		1784	{
		1785	if (expect_false (ev_is_active (w)))
		1786	return;
		1787
		1788	ev_start (EV_A_ (W)w, ++checkcnt);
		1789	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1790	checks [checkcnt - 1] = w;
		1791	}
		1792
		1793	void
		1794	ev_check_stop (EV_P_ ev_check *w)
		1795	{
		1796	ev_clear_pending (EV_A_ (W)w);
		1797	if (expect_false (!ev_is_active (w)))
		1798	return;
		1799
		1800	{
		1801	int active = ((W)w)->active;
		1802	checks [active - 1] = checks [--checkcnt];
		1803	((W)checks [active - 1])->active = active;
		1804	}
		1805
		1806	ev_stop (EV_A_ (W)w);
		1807	}
		1808
		1809	#if EV_EMBED_ENABLE
		1810	void noinline
		1811	ev_embed_sweep (EV_P_ ev_embed *w)
		1812	{
		1813	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1814	}
		1815
		1816	static void
		1817	embed_cb (EV_P_ ev_io *io, int revents)
		1818	{
		1819	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		1820
		1821	if (ev_cb (w))
		1822	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1823	else
		1824	ev_embed_sweep (loop, w);
		1825	}
		1826
		1827	void
		1828	ev_embed_start (EV_P_ ev_embed *w)
		1829	{
		1830	if (expect_false (ev_is_active (w)))
		1831	return;
		1832
		1833	{
		1834	struct ev_loop *loop = w->loop;
		1835	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1836	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1837	}
		1838
		1839	ev_set_priority (&w->io, ev_priority (w));
		1840	ev_io_start (EV_A_ &w->io);
		1841
		1842	ev_start (EV_A_ (W)w, 1);
		1843	}
		1844
		1845	void
		1846	ev_embed_stop (EV_P_ ev_embed *w)
		1847	{
		1848	ev_clear_pending (EV_A_ (W)w);
		1849	if (expect_false (!ev_is_active (w)))
		1850	return;
		1851
		1852	ev_io_stop (EV_A_ &w->io);
		1853
		1854	ev_stop (EV_A_ (W)w);
		1855	}
		1856	#endif
		1857
		1858	#if EV_FORK_ENABLE
		1859	void
		1860	ev_fork_start (EV_P_ ev_fork *w)
		1861	{
		1862	if (expect_false (ev_is_active (w)))
		1863	return;
		1864
		1865	ev_start (EV_A_ (W)w, ++forkcnt);
		1866	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		1867	forks [forkcnt - 1] = w;
		1868	}
		1869
		1870	void
		1871	ev_fork_stop (EV_P_ ev_fork *w)
		1872	{
		1873	ev_clear_pending (EV_A_ (W)w);
		1874	if (expect_false (!ev_is_active (w)))
		1875	return;
		1876
		1877	{
		1878	int active = ((W)w)->active;
		1879	forks [active - 1] = forks [--forkcnt];
		1880	((W)forks [active - 1])->active = active;
		1881	}
		1882
		1883	ev_stop (EV_A_ (W)w);
		1884	}
		1885	#endif
		1886
1541	/*****************************************************************************/	1887	/*****************************************************************************/
1542		1888
1543	struct ev_once	1889	struct ev_once
1544	{	1890	{
1545	struct ev_io io;	1891	ev_io io;
1546	struct ev_timer to;	1892	ev_timer to;
1547	void (*cb)(int revents, void *arg);	1893	void (*cb)(int revents, void *arg);
1548	void *arg;	1894	void *arg;
1549	};	1895	};
1550		1896
1551	static void	1897	static void
…		…
1560		1906
1561	cb (revents, arg);	1907	cb (revents, arg);
1562	}	1908	}
1563		1909
1564	static void	1910	static void
1565	once_cb_io (EV_P_ struct ev_io *w, int revents)	1911	once_cb_io (EV_P_ ev_io *w, int revents)
1566	{	1912	{
1567	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1913	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1568	}	1914	}
1569		1915
1570	static void	1916	static void
1571	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1917	once_cb_to (EV_P_ ev_timer *w, int revents)
1572	{	1918	{
1573	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1919	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1574	}	1920	}
1575		1921
1576	void	1922	void
1577	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1923	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1578	{	1924	{
1579	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	1925	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1580		1926
1581	if (!once)	1927	if (expect_false (!once))
		1928	{
1582	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1929	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1583	else	1930	return;
1584	{	1931	}
		1932
1585	once->cb = cb;	1933	once->cb = cb;
1586	once->arg = arg;	1934	once->arg = arg;
1587		1935
1588	ev_init (&once->io, once_cb_io);	1936	ev_init (&once->io, once_cb_io);
1589	if (fd >= 0)	1937	if (fd >= 0)
1590	{	1938	{
1591	ev_io_set (&once->io, fd, events);	1939	ev_io_set (&once->io, fd, events);
1592	ev_io_start (EV_A_ &once->io);	1940	ev_io_start (EV_A_ &once->io);
1593	}	1941	}
1594		1942
1595	ev_init (&once->to, once_cb_to);	1943	ev_init (&once->to, once_cb_to);
1596	if (timeout >= 0.)	1944	if (timeout >= 0.)
1597	{	1945	{
1598	ev_timer_set (&once->to, timeout, 0.);	1946	ev_timer_set (&once->to, timeout, 0.);
1599	ev_timer_start (EV_A_ &once->to);	1947	ev_timer_start (EV_A_ &once->to);
1600	}
1601	}	1948	}
1602	}	1949	}
1603		1950
1604	#ifdef __cplusplus	1951	#ifdef __cplusplus
1605	}	1952	}

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