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Comparing libev/ev.c (file contents):
Revision 1.98 by root, Sun Nov 11 02:05:20 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
40	# ifndef EV_USE_MONOTONIC	44	# ifndef EV_USE_MONOTONIC
41	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
42	# endif	46	# endif
43	# ifndef EV_USE_REALTIME	47	# ifndef EV_USE_REALTIME
44	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
45	# endif	49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
46	# endif	57	# endif
47		58
48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)	59	# ifndef EV_USE_SELECT
		60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
49	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
50	# endif	65	# endif
51		66
52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)	67	# ifndef EV_USE_POLL
		68	# if HAVE_POLL && HAVE_POLL_H
53	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
54	# endif	73	# endif
55		74
56	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)	75	# ifndef EV_USE_EPOLL
		76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
57	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
58	# endif	81	# endif
59		82
		83	# ifndef EV_USE_KQUEUE
60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
61	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
62	# endif	97	# endif
63		98
64	#endif	99	#endif
65		100
66	#include <math.h>	101	#include <math.h>
…		…
75	#include <sys/types.h>	110	#include <sys/types.h>
76	#include <time.h>	111	#include <time.h>
77		112
78	#include <signal.h>	113	#include <signal.h>
79		114
80	#ifndef WIN32	115	#ifndef _WIN32
81	# include <unistd.h>
82	# include <sys/time.h>	116	# include <sys/time.h>
83	# include <sys/wait.h>	117	# include <sys/wait.h>
		118	# include <unistd.h>
		119	#else
		120	# define WIN32_LEAN_AND_MEAN
		121	# include <windows.h>
		122	# ifndef EV_SELECT_IS_WINSOCKET
		123	# define EV_SELECT_IS_WINSOCKET 1
84	#endif	124	# endif
		125	#endif
		126
85	/**/	127	/**/
86		128
87	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
88	# define EV_USE_MONOTONIC 1	130	# define EV_USE_MONOTONIC 0
		131	#endif
		132
		133	#ifndef EV_USE_REALTIME
		134	# define EV_USE_REALTIME 0
89	#endif	135	#endif
90		136
91	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
92	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
93	#endif	139	#endif
94		140
95	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
96	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	142	# ifdef _WIN32
		143	# define EV_USE_POLL 0
		144	# else
		145	# define EV_USE_POLL 1
		146	# endif
97	#endif	147	#endif
98		148
99	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
100	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
101	#endif	151	#endif
102		152
103	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
104	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
105	#endif	155	#endif
106		156
107	#ifndef EV_USE_WIN32	157	#ifndef EV_USE_PORT
108	# ifdef WIN32
109	# define EV_USE_WIN32 0 /* it does not exist, use select */
110	# undef EV_USE_SELECT
111	# define EV_USE_SELECT 1	158	# define EV_USE_PORT 0
		159	#endif
		160
		161	#ifndef EV_PID_HASHSIZE
		162	# if EV_MINIMAL
		163	# define EV_PID_HASHSIZE 1
112	# else	164	# else
113	# define EV_USE_WIN32 0	165	# define EV_PID_HASHSIZE 16
114	# endif	166	# endif
115	#endif
116
117	#ifndef EV_USE_REALTIME
118	# define EV_USE_REALTIME 1
119	#endif	167	#endif
120		168
121	/**/	169	/**/
122		170
123	#ifndef CLOCK_MONOTONIC	171	#ifndef CLOCK_MONOTONIC
…		…
128	#ifndef CLOCK_REALTIME	176	#ifndef CLOCK_REALTIME
129	# undef EV_USE_REALTIME	177	# undef EV_USE_REALTIME
130	# define EV_USE_REALTIME 0	178	# define EV_USE_REALTIME 0
131	#endif	179	#endif
132		180
		181	#if EV_SELECT_IS_WINSOCKET
		182	# include <winsock.h>
		183	#endif
		184
133	/**/	185	/**/
134		186
135	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	187	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
136	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	188	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
137	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
138	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	189	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
139		190
140	#ifdef EV_H	191	#ifdef EV_H
141	# include EV_H	192	# include EV_H
142	#else	193	#else
143	# include "ev.h"	194	# include "ev.h"
144	#endif	195	#endif
145		196
146	#if __GNUC__ >= 3	197	#if __GNUC__ >= 3
147	# define expect(expr,value) __builtin_expect ((expr),(value))	198	# define expect(expr,value) __builtin_expect ((expr),(value))
		199	# define inline_size static inline /* inline for codesize */
		200	# if EV_MINIMAL
148	# define inline inline	201	# define noinline __attribute__ ((noinline))
		202	# define inline_speed static noinline
		203	# else
		204	# define noinline
		205	# define inline_speed static inline
		206	# endif
149	#else	207	#else
150	# define expect(expr,value) (expr)	208	# define expect(expr,value) (expr)
		209	# define inline_speed static
151	# define inline static	210	# define inline_size static
		211	# define noinline
152	#endif	212	#endif
153		213
154	#define expect_false(expr) expect ((expr) != 0, 0)	214	#define expect_false(expr) expect ((expr) != 0, 0)
155	#define expect_true(expr) expect ((expr) != 0, 1)	215	#define expect_true(expr) expect ((expr) != 0, 1)
156		216
157	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	217	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
158	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	218	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
159		219
		220	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		221	#define EMPTY2(a,b) /* used to suppress some warnings */
		222
160	typedef struct ev_watcher *W;	223	typedef ev_watcher *W;
161	typedef struct ev_watcher_list *WL;	224	typedef ev_watcher_list *WL;
162	typedef struct ev_watcher_time *WT;	225	typedef ev_watcher_time *WT;
163		226
164	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	227	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
165		228
166	#ifdef WIN32	229	#ifdef _WIN32
167	# include "ev_win32.c"	230	# include "ev_win32.c"
168	#endif	231	#endif
169		232
170	/*****************************************************************************/	233	/*****************************************************************************/
171		234
172	static void (*syserr_cb)(const char *msg);	235	static void (*syserr_cb)(const char *msg);
173		236
		237	void
174	void ev_set_syserr_cb (void (*cb)(const char *msg))	238	ev_set_syserr_cb (void (*cb)(const char *msg))
175	{	239	{
176	syserr_cb = cb;	240	syserr_cb = cb;
177	}	241	}
178		242
179	static void	243	static void noinline
180	syserr (const char *msg)	244	syserr (const char *msg)
181	{	245	{
182	if (!msg)	246	if (!msg)
183	msg = "(libev) system error";	247	msg = "(libev) system error";
184		248
…		…
189	perror (msg);	253	perror (msg);
190	abort ();	254	abort ();
191	}	255	}
192	}	256	}
193		257
194	static void *(*alloc)(void *ptr, long size);	258	static void *(*alloc)(void *ptr, size_t size) = realloc;
195		259
		260	void
196	void ev_set_allocator (void *(*cb)(void *ptr, long size))	261	ev_set_allocator (void *(*cb)(void *ptr, size_t size))
197	{	262	{
198	alloc = cb;	263	alloc = cb;
199	}	264	}
200		265
201	static void *	266	inline_speed void *
202	ev_realloc (void *ptr, long size)	267	ev_realloc (void *ptr, size_t size)
203	{	268	{
204	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	269	ptr = alloc (ptr, size);
205		270
206	if (!ptr && size)	271	if (!ptr && size)
207	{	272	{
208	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	273	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", (long)size);
209	abort ();	274	abort ();
210	}	275	}
211		276
212	return ptr;	277	return ptr;
213	}	278	}
…		…
220	typedef struct	285	typedef struct
221	{	286	{
222	WL head;	287	WL head;
223	unsigned char events;	288	unsigned char events;
224	unsigned char reify;	289	unsigned char reify;
		290	#if EV_SELECT_IS_WINSOCKET
		291	SOCKET handle;
		292	#endif
225	} ANFD;	293	} ANFD;
226		294
227	typedef struct	295	typedef struct
228	{	296	{
229	W w;	297	W w;
…		…
233	#if EV_MULTIPLICITY	301	#if EV_MULTIPLICITY
234		302
235	struct ev_loop	303	struct ev_loop
236	{	304	{
237	ev_tstamp ev_rt_now;	305	ev_tstamp ev_rt_now;
		306	#define ev_rt_now ((loop)->ev_rt_now)
238	#define VAR(name,decl) decl;	307	#define VAR(name,decl) decl;
239	#include "ev_vars.h"	308	#include "ev_vars.h"
240	#undef VAR	309	#undef VAR
241	};	310	};
242	#include "ev_wrap.h"	311	#include "ev_wrap.h"
243		312
244	struct ev_loop default_loop_struct;	313	static struct ev_loop default_loop_struct;
245	static struct ev_loop *default_loop;	314	struct ev_loop *ev_default_loop_ptr;
246		315
247	#else	316	#else
248		317
249	ev_tstamp ev_rt_now;	318	ev_tstamp ev_rt_now;
250	#define VAR(name,decl) static decl;	319	#define VAR(name,decl) static decl;
251	#include "ev_vars.h"	320	#include "ev_vars.h"
252	#undef VAR	321	#undef VAR
253		322
254	static int default_loop;	323	static int ev_default_loop_ptr;
255		324
256	#endif	325	#endif
257		326
258	/*****************************************************************************/	327	/*****************************************************************************/
259		328
…		…
269	gettimeofday (&tv, 0);	338	gettimeofday (&tv, 0);
270	return tv.tv_sec + tv.tv_usec * 1e-6;	339	return tv.tv_sec + tv.tv_usec * 1e-6;
271	#endif	340	#endif
272	}	341	}
273		342
274	inline ev_tstamp	343	ev_tstamp inline_size
275	get_clock (void)	344	get_clock (void)
276	{	345	{
277	#if EV_USE_MONOTONIC	346	#if EV_USE_MONOTONIC
278	if (expect_true (have_monotonic))	347	if (expect_true (have_monotonic))
279	{	348	{
…		…
292	{	361	{
293	return ev_rt_now;	362	return ev_rt_now;
294	}	363	}
295	#endif	364	#endif
296		365
297	#define array_roundsize(type,n) ((n) | 4 & ~3)	366	#define array_roundsize(type,n) (((n) | 4) & ~3)
298		367
299	#define array_needsize(type,base,cur,cnt,init) \	368	#define array_needsize(type,base,cur,cnt,init) \
300	if (expect_false ((cnt) > cur)) \	369	if (expect_false ((cnt) > cur)) \
301	{ \	370	{ \
302	int newcnt = cur; \	371	int newcnt = cur; \
…		…
317	stem ## max = array_roundsize (stem ## cnt >> 1); \	386	stem ## max = array_roundsize (stem ## cnt >> 1); \
318	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	387	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
319	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	388	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
320	}	389	}
321		390
322	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
323	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
324	#define array_free_microshit(stem) \
325	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
326
327	#define array_free(stem, idx) \	391	#define array_free(stem, idx) \
328	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;
329		393
330	/*****************************************************************************/	394	/*****************************************************************************/
331		395
332	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
333	anfds_init (ANFD *base, int count)	425	anfds_init (ANFD *base, int count)
334	{	426	{
335	while (count--)	427	while (count--)
336	{	428	{
337	base->head = 0;	429	base->head = 0;
…		…
340		432
341	++base;	433	++base;
342	}	434	}
343	}	435	}
344		436
345	void	437	void inline_speed
346	ev_feed_event (EV_P_ void *w, int revents)
347	{
348	W w_ = (W)w;
349
350	if (w_->pending)
351	{
352	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
353	return;
354	}
355
356	w_->pending = ++pendingcnt [ABSPRI (w_)];
357	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
358	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
359	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
360	}
361
362	static void
363	queue_events (EV_P_ W *events, int eventcnt, int type)
364	{
365	int i;
366
367	for (i = 0; i < eventcnt; ++i)
368	ev_feed_event (EV_A_ events [i], type);
369	}
370
371	inline void
372	fd_event (EV_P_ int fd, int revents)	438	fd_event (EV_P_ int fd, int revents)
373	{	439	{
374	ANFD *anfd = anfds + fd;	440	ANFD *anfd = anfds + fd;
375	struct ev_io *w;	441	ev_io *w;
376		442
377	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)
378	{	444	{
379	int ev = w->events & revents;	445	int ev = w->events & revents;
380		446
381	if (ev)	447	if (ev)
382	ev_feed_event (EV_A_ (W)w, ev);	448	ev_feed_event (EV_A_ (W)w, ev);
…		…
387	ev_feed_fd_event (EV_P_ int fd, int revents)	453	ev_feed_fd_event (EV_P_ int fd, int revents)
388	{	454	{
389	fd_event (EV_A_ fd, revents);	455	fd_event (EV_A_ fd, revents);
390	}	456	}
391		457
392	/*****************************************************************************/	458	void inline_size
393
394	static void
395	fd_reify (EV_P)	459	fd_reify (EV_P)
396	{	460	{
397	int i;	461	int i;
398		462
399	for (i = 0; i < fdchangecnt; ++i)	463	for (i = 0; i < fdchangecnt; ++i)
400	{	464	{
401	int fd = fdchanges [i];	465	int fd = fdchanges [i];
402	ANFD *anfd = anfds + fd;	466	ANFD *anfd = anfds + fd;
403	struct ev_io *w;	467	ev_io *w;
404		468
405	int events = 0;	469	int events = 0;
406		470
407	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)
408	events |= w->events;	472	events |= w->events;
409		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
410	anfd->reify = 0;	483	anfd->reify = 0;
411		484
412	method_modify (EV_A_ fd, anfd->events, events);	485	backend_modify (EV_A_ fd, anfd->events, events);
413	anfd->events = events;	486	anfd->events = events;
414	}	487	}
415		488
416	fdchangecnt = 0;	489	fdchangecnt = 0;
417	}	490	}
418		491
419	static void	492	void inline_size
420	fd_change (EV_P_ int fd)	493	fd_change (EV_P_ int fd)
421	{	494	{
422	if (anfds [fd].reify)	495	if (expect_false (anfds [fd].reify))
423	return;	496	return;
424		497
425	anfds [fd].reify = 1;	498	anfds [fd].reify = 1;
426		499
427	++fdchangecnt;	500	++fdchangecnt;
428	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	501	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
429	fdchanges [fdchangecnt - 1] = fd;	502	fdchanges [fdchangecnt - 1] = fd;
430	}	503	}
431		504
432	static void	505	void inline_speed
433	fd_kill (EV_P_ int fd)	506	fd_kill (EV_P_ int fd)
434	{	507	{
435	struct ev_io *w;	508	ev_io *w;
436		509
437	while ((w = (struct ev_io *)anfds [fd].head))	510	while ((w = (ev_io *)anfds [fd].head))
438	{	511	{
439	ev_io_stop (EV_A_ w);	512	ev_io_stop (EV_A_ w);
440	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);
441	}	514	}
442	}	515	}
443		516
444	static int	517	int inline_size
445	fd_valid (int fd)	518	fd_valid (int fd)
446	{	519	{
447	#ifdef WIN32	520	#ifdef _WIN32
448	return !!win32_get_osfhandle (fd);	521	return _get_osfhandle (fd) != -1;
449	#else	522	#else
450	return fcntl (fd, F_GETFD) != -1;	523	return fcntl (fd, F_GETFD) != -1;
451	#endif	524	#endif
452	}	525	}
453		526
454	/* called on EBADF to verify fds */	527	/* called on EBADF to verify fds */
455	static void	528	static void noinline
456	fd_ebadf (EV_P)	529	fd_ebadf (EV_P)
457	{	530	{
458	int fd;	531	int fd;
459		532
460	for (fd = 0; fd < anfdmax; ++fd)	533	for (fd = 0; fd < anfdmax; ++fd)
…		…
462	if (!fd_valid (fd) == -1 && errno == EBADF)	535	if (!fd_valid (fd) == -1 && errno == EBADF)
463	fd_kill (EV_A_ fd);	536	fd_kill (EV_A_ fd);
464	}	537	}
465		538
466	/* 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 */
467	static void	540	static void noinline
468	fd_enomem (EV_P)	541	fd_enomem (EV_P)
469	{	542	{
470	int fd;	543	int fd;
471		544
472	for (fd = anfdmax; fd--; )	545	for (fd = anfdmax; fd--; )
…		…
475	fd_kill (EV_A_ fd);	548	fd_kill (EV_A_ fd);
476	return;	549	return;
477	}	550	}
478	}	551	}
479		552
480	/* 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 */
481	static void	554	static void noinline
482	fd_rearm_all (EV_P)	555	fd_rearm_all (EV_P)
483	{	556	{
484	int fd;	557	int fd;
485		558
486	/* 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 */
…		…
492	}	565	}
493	}	566	}
494		567
495	/*****************************************************************************/	568	/*****************************************************************************/
496		569
497	static void	570	void inline_speed
498	upheap (WT *heap, int k)	571	upheap (WT *heap, int k)
499	{	572	{
500	WT w = heap [k];	573	WT w = heap [k];
501		574
502	while (k && heap [k >> 1]->at > w->at)	575	while (k && heap [k >> 1]->at > w->at)
…		…
509	heap [k] = w;	582	heap [k] = w;
510	((W)heap [k])->active = k + 1;	583	((W)heap [k])->active = k + 1;
511		584
512	}	585	}
513		586
514	static void	587	void inline_speed
515	downheap (WT *heap, int N, int k)	588	downheap (WT *heap, int N, int k)
516	{	589	{
517	WT w = heap [k];	590	WT w = heap [k];
518		591
519	while (k < (N >> 1))	592	while (k < (N >> 1))
…		…
533		606
534	heap [k] = w;	607	heap [k] = w;
535	((W)heap [k])->active = k + 1;	608	((W)heap [k])->active = k + 1;
536	}	609	}
537		610
538	inline void	611	void inline_size
539	adjustheap (WT *heap, int N, int k, ev_tstamp at)	612	adjustheap (WT *heap, int N, int k)
540	{	613	{
541	ev_tstamp old_at = heap [k]->at;	614	upheap (heap, k);
542	heap [k]->at = at;
543
544	if (old_at < at)
545	downheap (heap, N, k);	615	downheap (heap, N, k);
546	else
547	upheap (heap, k);
548	}	616	}
549		617
550	/*****************************************************************************/	618	/*****************************************************************************/
551		619
552	typedef struct	620	typedef struct
…		…
558	static ANSIG *signals;	626	static ANSIG *signals;
559	static int signalmax;	627	static int signalmax;
560		628
561	static int sigpipe [2];	629	static int sigpipe [2];
562	static sig_atomic_t volatile gotsig;	630	static sig_atomic_t volatile gotsig;
563	static struct ev_io sigev;	631	static ev_io sigev;
564		632
565	static void	633	void inline_size
566	signals_init (ANSIG *base, int count)	634	signals_init (ANSIG *base, int count)
567	{	635	{
568	while (count--)	636	while (count--)
569	{	637	{
570	base->head = 0;	638	base->head = 0;
…		…
575	}	643	}
576		644
577	static void	645	static void
578	sighandler (int signum)	646	sighandler (int signum)
579	{	647	{
580	#if WIN32	648	#if _WIN32
581	signal (signum, sighandler);	649	signal (signum, sighandler);
582	#endif	650	#endif
583		651
584	signals [signum - 1].gotsig = 1;	652	signals [signum - 1].gotsig = 1;
585		653
586	if (!gotsig)	654	if (!gotsig)
587	{	655	{
588	int old_errno = errno;	656	int old_errno = errno;
589	gotsig = 1;	657	gotsig = 1;
590	#ifdef WIN32
591	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
592	#else
593	write (sigpipe [1], &signum, 1);	658	write (sigpipe [1], &signum, 1);
594	#endif
595	errno = old_errno;	659	errno = old_errno;
596	}	660	}
597	}	661	}
598		662
599	void	663	void noinline
600	ev_feed_signal_event (EV_P_ int signum)	664	ev_feed_signal_event (EV_P_ int signum)
601	{	665	{
602	WL w;	666	WL w;
603		667
604	#if EV_MULTIPLICITY	668	#if EV_MULTIPLICITY
605	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));
606	#endif	670	#endif
607		671
608	--signum;	672	--signum;
609		673
610	if (signum < 0 || signum >= signalmax)	674	if (signum < 0 || signum >= signalmax)
…		…
615	for (w = signals [signum].head; w; w = w->next)	679	for (w = signals [signum].head; w; w = w->next)
616	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	680	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
617	}	681	}
618		682
619	static void	683	static void
620	sigcb (EV_P_ struct ev_io *iow, int revents)	684	sigcb (EV_P_ ev_io *iow, int revents)
621	{	685	{
622	int signum;	686	int signum;
623		687
624	#ifdef WIN32
625	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
626	#else
627	read (sigpipe [0], &revents, 1);	688	read (sigpipe [0], &revents, 1);
628	#endif
629	gotsig = 0;	689	gotsig = 0;
630		690
631	for (signum = signalmax; signum--; )	691	for (signum = signalmax; signum--; )
632	if (signals [signum].gotsig)	692	if (signals [signum].gotsig)
633	ev_feed_signal_event (EV_A_ signum + 1);	693	ev_feed_signal_event (EV_A_ signum + 1);
634	}	694	}
635		695
636	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
637	siginit (EV_P)	709	siginit (EV_P)
638	{	710	{
639	#ifndef WIN32	711	fd_intern (sigpipe [0]);
640	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	712	fd_intern (sigpipe [1]);
641	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
642
643	/* rather than sort out wether we really need nb, set it */
644	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
645	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
646	#endif
647		713
648	ev_io_set (&sigev, sigpipe [0], EV_READ);	714	ev_io_set (&sigev, sigpipe [0], EV_READ);
649	ev_io_start (EV_A_ &sigev);	715	ev_io_start (EV_A_ &sigev);
650	ev_unref (EV_A); /* child watcher should not keep loop alive */	716	ev_unref (EV_A); /* child watcher should not keep loop alive */
651	}	717	}
652		718
653	/*****************************************************************************/	719	/*****************************************************************************/
654		720
655	static struct ev_child *childs [PID_HASHSIZE];	721	static ev_child *childs [EV_PID_HASHSIZE];
656		722
657	#ifndef WIN32	723	#ifndef _WIN32
658		724
659	static struct ev_signal childev;	725	static ev_signal childev;
660		726
661	#ifndef WCONTINUED	727	void inline_speed
662	# define WCONTINUED 0
663	#endif
664
665	static void
666	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)
667	{	729	{
668	struct ev_child *w;	730	ev_child *w;
669		731
670	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)
671	if (w->pid == pid || !w->pid)	733	if (w->pid == pid || !w->pid)
672	{	734	{
673	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	735	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
674	w->rpid = pid;	736	w->rpid = pid;
675	w->rstatus = status;	737	w->rstatus = status;
676	ev_feed_event (EV_A_ (W)w, EV_CHILD);	738	ev_feed_event (EV_A_ (W)w, EV_CHILD);
677	}	739	}
678	}	740	}
679		741
		742	#ifndef WCONTINUED
		743	# define WCONTINUED 0
		744	#endif
		745
680	static void	746	static void
681	childcb (EV_P_ struct ev_signal *sw, int revents)	747	childcb (EV_P_ ev_signal *sw, int revents)
682	{	748	{
683	int pid, status;	749	int pid, status;
684		750
		751	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
685	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	752	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
686	{	753	if (!WCONTINUED
		754	|| errno != EINVAL
		755	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		756	return;
		757
687	/* 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 */
688	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	760	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
689		761
690	child_reap (EV_A_ sw, pid, pid, status);	762	child_reap (EV_A_ sw, pid, pid, status);
		763	if (EV_PID_HASHSIZE > 1)
691	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 */
692	}
693	}	765	}
694		766
695	#endif	767	#endif
696		768
697	/*****************************************************************************/	769	/*****************************************************************************/
698		770
		771	#if EV_USE_PORT
		772	# include "ev_port.c"
		773	#endif
699	#if EV_USE_KQUEUE	774	#if EV_USE_KQUEUE
700	# include "ev_kqueue.c"	775	# include "ev_kqueue.c"
701	#endif	776	#endif
702	#if EV_USE_EPOLL	777	#if EV_USE_EPOLL
703	# include "ev_epoll.c"	778	# include "ev_epoll.c"
…		…
720	{	795	{
721	return EV_VERSION_MINOR;	796	return EV_VERSION_MINOR;
722	}	797	}
723		798
724	/* 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 */
725	static int	800	int inline_size
726	enable_secure (void)	801	enable_secure (void)
727	{	802	{
728	#ifdef WIN32	803	#ifdef _WIN32
729	return 0;	804	return 0;
730	#else	805	#else
731	return getuid () != geteuid ()	806	return getuid () != geteuid ()
732	|| getgid () != getegid ();	807	|| getgid () != getegid ();
733	#endif	808	#endif
734	}	809	}
735		810
736	int	811	unsigned int
737	ev_method (EV_P)	812	ev_supported_backends (void)
738	{	813	{
739	return method;	814	unsigned int flags = 0;
740	}
741		815
742	static void	816	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
743	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)
744	{	827	{
745	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)
746	{	861	{
747	#if EV_USE_MONOTONIC	862	#if EV_USE_MONOTONIC
748	{	863	{
749	struct timespec ts;	864	struct timespec ts;
750	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	865	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
755	ev_rt_now = ev_time ();	870	ev_rt_now = ev_time ();
756	mn_now = get_clock ();	871	mn_now = get_clock ();
757	now_floor = mn_now;	872	now_floor = mn_now;
758	rtmn_diff = ev_rt_now - mn_now;	873	rtmn_diff = ev_rt_now - mn_now;
759		874
760	if (methods == EVMETHOD_AUTO)	875	if (!(flags & EVFLAG_NOENV)
761	if (!enable_secure () && getenv ("LIBEV_METHODS"))	876	&& !enable_secure ()
		877	&& getenv ("LIBEV_FLAGS"))
762	methods = atoi (getenv ("LIBEV_METHODS"));	878	flags = atoi (getenv ("LIBEV_FLAGS"));
763	else
764	methods = EVMETHOD_ANY;
765		879
766	method = 0;	880	if (!(flags & 0x0000ffffUL))
767	#if EV_USE_WIN32	881	flags |= ev_recommended_backends ();
768	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);
769	#endif	886	#endif
770	#if EV_USE_KQUEUE	887	#if EV_USE_KQUEUE
771	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	888	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
772	#endif	889	#endif
773	#if EV_USE_EPOLL	890	#if EV_USE_EPOLL
774	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	891	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
775	#endif	892	#endif
776	#if EV_USE_POLL	893	#if EV_USE_POLL
777	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	894	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
778	#endif	895	#endif
779	#if EV_USE_SELECT	896	#if EV_USE_SELECT
780	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	897	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
781	#endif	898	#endif
782		899
783	ev_init (&sigev, sigcb);	900	ev_init (&sigev, sigcb);
784	ev_set_priority (&sigev, EV_MAXPRI);	901	ev_set_priority (&sigev, EV_MAXPRI);
785	}	902	}
786	}	903	}
787		904
788	void	905	static void noinline
789	loop_destroy (EV_P)	906	loop_destroy (EV_P)
790	{	907	{
791	int i;	908	int i;
792		909
793	#if EV_USE_WIN32	910	#if EV_USE_PORT
794	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	911	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
795	#endif	912	#endif
796	#if EV_USE_KQUEUE	913	#if EV_USE_KQUEUE
797	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	914	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
798	#endif	915	#endif
799	#if EV_USE_EPOLL	916	#if EV_USE_EPOLL
800	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	917	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
801	#endif	918	#endif
802	#if EV_USE_POLL	919	#if EV_USE_POLL
803	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	920	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
804	#endif	921	#endif
805	#if EV_USE_SELECT	922	#if EV_USE_SELECT
806	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	923	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
807	#endif	924	#endif
808		925
809	for (i = NUMPRI; i--; )	926	for (i = NUMPRI; i--; )
810	array_free (pending, [i]);	927	array_free (pending, [i]);
811		928
812	/* have to use the microsoft-never-gets-it-right macro */	929	/* have to use the microsoft-never-gets-it-right macro */
813	array_free_microshit (fdchange);	930	array_free (fdchange, EMPTY0);
814	array_free_microshit (timer);	931	array_free (timer, EMPTY0);
815	#if EV_PERIODICS	932	#if EV_PERIODIC_ENABLE
816	array_free_microshit (periodic);	933	array_free (periodic, EMPTY0);
817	#endif	934	#endif
818	array_free_microshit (idle);	935	array_free (idle, EMPTY0);
819	array_free_microshit (prepare);	936	array_free (prepare, EMPTY0);
820	array_free_microshit (check);	937	array_free (check, EMPTY0);
821		938
822	method = 0;	939	backend = 0;
823	}	940	}
824		941
825	static void	942	void inline_size
826	loop_fork (EV_P)	943	loop_fork (EV_P)
827	{	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
828	#if EV_USE_EPOLL	951	#if EV_USE_EPOLL
829	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	952	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
830	#endif
831	#if EV_USE_KQUEUE
832	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
833	#endif	953	#endif
834		954
835	if (ev_is_active (&sigev))	955	if (ev_is_active (&sigev))
836	{	956	{
837	/* default loop */	957	/* default loop */
…		…
850	postfork = 0;	970	postfork = 0;
851	}	971	}
852		972
853	#if EV_MULTIPLICITY	973	#if EV_MULTIPLICITY
854	struct ev_loop *	974	struct ev_loop *
855	ev_loop_new (int methods)	975	ev_loop_new (unsigned int flags)
856	{	976	{
857	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));
858		978
859	memset (loop, 0, sizeof (struct ev_loop));	979	memset (loop, 0, sizeof (struct ev_loop));
860		980
861	loop_init (EV_A_ methods);	981	loop_init (EV_A_ flags);
862		982
863	if (ev_method (EV_A))	983	if (ev_backend (EV_A))
864	return loop;	984	return loop;
865		985
866	return 0;	986	return 0;
867	}	987	}
868		988
…		…
881		1001
882	#endif	1002	#endif
883		1003
884	#if EV_MULTIPLICITY	1004	#if EV_MULTIPLICITY
885	struct ev_loop *	1005	struct ev_loop *
		1006	ev_default_loop_init (unsigned int flags)
886	#else	1007	#else
887	int	1008	int
		1009	ev_default_loop (unsigned int flags)
888	#endif	1010	#endif
889	ev_default_loop (int methods)
890	{	1011	{
891	if (sigpipe [0] == sigpipe [1])	1012	if (sigpipe [0] == sigpipe [1])
892	if (pipe (sigpipe))	1013	if (pipe (sigpipe))
893	return 0;	1014	return 0;
894		1015
895	if (!default_loop)	1016	if (!ev_default_loop_ptr)
896	{	1017	{
897	#if EV_MULTIPLICITY	1018	#if EV_MULTIPLICITY
898	struct ev_loop *loop = default_loop = &default_loop_struct;	1019	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
899	#else	1020	#else
900	default_loop = 1;	1021	ev_default_loop_ptr = 1;
901	#endif	1022	#endif
902		1023
903	loop_init (EV_A_ methods);	1024	loop_init (EV_A_ flags);
904		1025
905	if (ev_method (EV_A))	1026	if (ev_backend (EV_A))
906	{	1027	{
907	siginit (EV_A);	1028	siginit (EV_A);
908		1029
909	#ifndef WIN32	1030	#ifndef _WIN32
910	ev_signal_init (&childev, childcb, SIGCHLD);	1031	ev_signal_init (&childev, childcb, SIGCHLD);
911	ev_set_priority (&childev, EV_MAXPRI);	1032	ev_set_priority (&childev, EV_MAXPRI);
912	ev_signal_start (EV_A_ &childev);	1033	ev_signal_start (EV_A_ &childev);
913	ev_unref (EV_A); /* child watcher should not keep loop alive */	1034	ev_unref (EV_A); /* child watcher should not keep loop alive */
914	#endif	1035	#endif
915	}	1036	}
916	else	1037	else
917	default_loop = 0;	1038	ev_default_loop_ptr = 0;
918	}	1039	}
919		1040
920	return default_loop;	1041	return ev_default_loop_ptr;
921	}	1042	}
922		1043
923	void	1044	void
924	ev_default_destroy (void)	1045	ev_default_destroy (void)
925	{	1046	{
926	#if EV_MULTIPLICITY	1047	#if EV_MULTIPLICITY
927	struct ev_loop *loop = default_loop;	1048	struct ev_loop *loop = ev_default_loop_ptr;
928	#endif	1049	#endif
929		1050
930	#ifndef WIN32	1051	#ifndef _WIN32
931	ev_ref (EV_A); /* child watcher */	1052	ev_ref (EV_A); /* child watcher */
932	ev_signal_stop (EV_A_ &childev);	1053	ev_signal_stop (EV_A_ &childev);
933	#endif	1054	#endif
934		1055
935	ev_ref (EV_A); /* signal watcher */	1056	ev_ref (EV_A); /* signal watcher */
…		…
943		1064
944	void	1065	void
945	ev_default_fork (void)	1066	ev_default_fork (void)
946	{	1067	{
947	#if EV_MULTIPLICITY	1068	#if EV_MULTIPLICITY
948	struct ev_loop *loop = default_loop;	1069	struct ev_loop *loop = ev_default_loop_ptr;
949	#endif	1070	#endif
950		1071
951	if (method)	1072	if (backend)
952	postfork = 1;	1073	postfork = 1;
953	}	1074	}
954		1075
955	/*****************************************************************************/	1076	/*****************************************************************************/
956		1077
957	static int	1078	int inline_size
958	any_pending (EV_P)	1079	any_pending (EV_P)
959	{	1080	{
960	int pri;	1081	int pri;
961		1082
962	for (pri = NUMPRI; pri--; )	1083	for (pri = NUMPRI; pri--; )
…		…
964	return 1;	1085	return 1;
965		1086
966	return 0;	1087	return 0;
967	}	1088	}
968		1089
969	static void	1090	void inline_speed
970	call_pending (EV_P)	1091	call_pending (EV_P)
971	{	1092	{
972	int pri;	1093	int pri;
973		1094
974	for (pri = NUMPRI; pri--; )	1095	for (pri = NUMPRI; pri--; )
975	while (pendingcnt [pri])	1096	while (pendingcnt [pri])
976	{	1097	{
977	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1098	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
978		1099
979	if (p->w)	1100	if (expect_true (p->w))
980	{	1101	{
		1102	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1103
981	p->w->pending = 0;	1104	p->w->pending = 0;
982	EV_CB_INVOKE (p->w, p->events);	1105	EV_CB_INVOKE (p->w, p->events);
983	}	1106	}
984	}	1107	}
985	}	1108	}
986		1109
987	static void	1110	void inline_size
988	timers_reify (EV_P)	1111	timers_reify (EV_P)
989	{	1112	{
990	while (timercnt && ((WT)timers [0])->at <= mn_now)	1113	while (timercnt && ((WT)timers [0])->at <= mn_now)
991	{	1114	{
992	struct ev_timer *w = timers [0];	1115	ev_timer *w = timers [0];
993		1116
994	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1117	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
995		1118
996	/* first reschedule or stop timer */	1119	/* first reschedule or stop timer */
997	if (w->repeat)	1120	if (w->repeat)
998	{	1121	{
999	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.));
…		…
1009		1132
1010	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1133	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1011	}	1134	}
1012	}	1135	}
1013		1136
1014	#if EV_PERIODICS	1137	#if EV_PERIODIC_ENABLE
1015	static void	1138	void inline_size
1016	periodics_reify (EV_P)	1139	periodics_reify (EV_P)
1017	{	1140	{
1018	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1141	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1019	{	1142	{
1020	struct ev_periodic *w = periodics [0];	1143	ev_periodic *w = periodics [0];
1021		1144
1022	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1145	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1023		1146
1024	/* first reschedule or stop timer */	1147	/* first reschedule or stop timer */
1025	if (w->reschedule_cb)	1148	if (w->reschedule_cb)
1026	{	1149	{
1027	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);
1028
1029	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));
1030	downheap ((WT *)periodics, periodiccnt, 0);	1152	downheap ((WT *)periodics, periodiccnt, 0);
1031	}	1153	}
1032	else if (w->interval)	1154	else if (w->interval)
1033	{	1155	{
…		…
1040		1162
1041	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1163	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1042	}	1164	}
1043	}	1165	}
1044		1166
1045	static void	1167	static void noinline
1046	periodics_reschedule (EV_P)	1168	periodics_reschedule (EV_P)
1047	{	1169	{
1048	int i;	1170	int i;
1049		1171
1050	/* adjust periodics after time jump */	1172	/* adjust periodics after time jump */
1051	for (i = 0; i < periodiccnt; ++i)	1173	for (i = 0; i < periodiccnt; ++i)
1052	{	1174	{
1053	struct ev_periodic *w = periodics [i];	1175	ev_periodic *w = periodics [i];
1054		1176
1055	if (w->reschedule_cb)	1177	if (w->reschedule_cb)
1056	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1178	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1057	else if (w->interval)	1179	else if (w->interval)
1058	((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;
…		…
1062	for (i = periodiccnt >> 1; i--; )	1184	for (i = periodiccnt >> 1; i--; )
1063	downheap ((WT *)periodics, periodiccnt, i);	1185	downheap ((WT *)periodics, periodiccnt, i);
1064	}	1186	}
1065	#endif	1187	#endif
1066		1188
1067	inline int	1189	int inline_size
1068	time_update_monotonic (EV_P)	1190	time_update_monotonic (EV_P)
1069	{	1191	{
1070	mn_now = get_clock ();	1192	mn_now = get_clock ();
1071		1193
1072	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1194	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
…		…
1080	ev_rt_now = ev_time ();	1202	ev_rt_now = ev_time ();
1081	return 1;	1203	return 1;
1082	}	1204	}
1083	}	1205	}
1084		1206
1085	static void	1207	void inline_size
1086	time_update (EV_P)	1208	time_update (EV_P)
1087	{	1209	{
1088	int i;	1210	int i;
1089		1211
1090	#if EV_USE_MONOTONIC	1212	#if EV_USE_MONOTONIC
…		…
1092	{	1214	{
1093	if (time_update_monotonic (EV_A))	1215	if (time_update_monotonic (EV_A))
1094	{	1216	{
1095	ev_tstamp odiff = rtmn_diff;	1217	ev_tstamp odiff = rtmn_diff;
1096		1218
1097	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; )
1098	{	1228	{
1099	rtmn_diff = ev_rt_now - mn_now;	1229	rtmn_diff = ev_rt_now - mn_now;
1100		1230
1101	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1231	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1102	return; /* all is well */	1232	return; /* all is well */
…		…
1104	ev_rt_now = ev_time ();	1234	ev_rt_now = ev_time ();
1105	mn_now = get_clock ();	1235	mn_now = get_clock ();
1106	now_floor = mn_now;	1236	now_floor = mn_now;
1107	}	1237	}
1108		1238
1109	# if EV_PERIODICS	1239	# if EV_PERIODIC_ENABLE
1110	periodics_reschedule (EV_A);	1240	periodics_reschedule (EV_A);
1111	# endif	1241	# endif
1112	/* no timer adjustment, as the monotonic clock doesn't jump */	1242	/* no timer adjustment, as the monotonic clock doesn't jump */
1113	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1243	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1114	}	1244	}
…		…
1118	{	1248	{
1119	ev_rt_now = ev_time ();	1249	ev_rt_now = ev_time ();
1120		1250
1121	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))
1122	{	1252	{
1123	#if EV_PERIODICS	1253	#if EV_PERIODIC_ENABLE
1124	periodics_reschedule (EV_A);	1254	periodics_reschedule (EV_A);
1125	#endif	1255	#endif
1126		1256
1127	/* 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 */
1128	for (i = 0; i < timercnt; ++i)	1258	for (i = 0; i < timercnt; ++i)
…		…
1148	static int loop_done;	1278	static int loop_done;
1149		1279
1150	void	1280	void
1151	ev_loop (EV_P_ int flags)	1281	ev_loop (EV_P_ int flags)
1152	{	1282	{
1153	double block;
1154	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1283	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1284	? EVUNLOOP_ONE
		1285	: EVUNLOOP_CANCEL;
1155		1286
1156	do	1287	while (activecnt)
1157	{	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
1158	/* queue check watchers (and execute them) */	1299	/* queue check watchers (and execute them) */
1159	if (expect_false (preparecnt))	1300	if (expect_false (preparecnt))
1160	{	1301	{
1161	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1302	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1162	call_pending (EV_A);	1303	call_pending (EV_A);
…		…
1168		1309
1169	/* update fd-related kernel structures */	1310	/* update fd-related kernel structures */
1170	fd_reify (EV_A);	1311	fd_reify (EV_A);
1171		1312
1172	/* calculate blocking time */	1313	/* calculate blocking time */
		1314	{
		1315	double block;
1173		1316
1174	/* we only need this for !monotonic clock or timers, but as we basically	1317	if (flags & EVLOOP_NONBLOCK || idlecnt)
1175	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 */
1176	#if EV_USE_MONOTONIC	1322	#if EV_USE_MONOTONIC
1177	if (expect_true (have_monotonic))	1323	if (expect_true (have_monotonic))
1178	time_update_monotonic (EV_A);	1324	time_update_monotonic (EV_A);
1179	else	1325	else
1180	#endif	1326	#endif
1181	{	1327	{
1182	ev_rt_now = ev_time ();	1328	ev_rt_now = ev_time ();
1183	mn_now = ev_rt_now;	1329	mn_now = ev_rt_now;
1184	}	1330	}
1185		1331
1186	if (flags & EVLOOP_NONBLOCK || idlecnt)
1187	block = 0.;
1188	else
1189	{
1190	block = MAX_BLOCKTIME;	1332	block = MAX_BLOCKTIME;
1191		1333
1192	if (timercnt)	1334	if (timercnt)
1193	{	1335	{
1194	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1336	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1195	if (block > to) block = to;	1337	if (block > to) block = to;
1196	}	1338	}
1197		1339
1198	#if EV_PERIODICS	1340	#if EV_PERIODIC_ENABLE
1199	if (periodiccnt)	1341	if (periodiccnt)
1200	{	1342	{
1201	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;
1202	if (block > to) block = to;	1344	if (block > to) block = to;
1203	}	1345	}
1204	#endif	1346	#endif
1205		1347
1206	if (block < 0.) block = 0.;	1348	if (expect_false (block < 0.)) block = 0.;
1207	}	1349	}
1208		1350
1209	method_poll (EV_A_ block);	1351	backend_poll (EV_A_ block);
		1352	}
1210		1353
1211	/* update ev_rt_now, do magic */	1354	/* update ev_rt_now, do magic */
1212	time_update (EV_A);	1355	time_update (EV_A);
1213		1356
1214	/* queue pending timers and reschedule them */	1357	/* queue pending timers and reschedule them */
1215	timers_reify (EV_A); /* relative timers called last */	1358	timers_reify (EV_A); /* relative timers called last */
1216	#if EV_PERIODICS	1359	#if EV_PERIODIC_ENABLE
1217	periodics_reify (EV_A); /* absolute timers called first */	1360	periodics_reify (EV_A); /* absolute timers called first */
1218	#endif	1361	#endif
1219		1362
1220	/* queue idle watchers unless io or timers are pending */	1363	/* queue idle watchers unless other events are pending */
1221	if (idlecnt && !any_pending (EV_A))	1364	if (idlecnt && !any_pending (EV_A))
1222	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1365	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1223		1366
1224	/* queue check watchers, to be executed first */	1367	/* queue check watchers, to be executed first */
1225	if (checkcnt)	1368	if (expect_false (checkcnt))
1226	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1369	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1227		1370
1228	call_pending (EV_A);	1371	call_pending (EV_A);
1229	}
1230	while (activecnt && !loop_done);
1231		1372
1232	if (loop_done != 2)	1373	if (expect_false (loop_done))
1233	loop_done = 0;	1374	break;
		1375	}
		1376
		1377	if (loop_done == EVUNLOOP_ONE)
		1378	loop_done = EVUNLOOP_CANCEL;
1234	}	1379	}
1235		1380
1236	void	1381	void
1237	ev_unloop (EV_P_ int how)	1382	ev_unloop (EV_P_ int how)
1238	{	1383	{
1239	loop_done = how;	1384	loop_done = how;
1240	}	1385	}
1241		1386
1242	/*****************************************************************************/	1387	/*****************************************************************************/
1243		1388
1244	inline void	1389	void inline_size
1245	wlist_add (WL *head, WL elem)	1390	wlist_add (WL *head, WL elem)
1246	{	1391	{
1247	elem->next = *head;	1392	elem->next = *head;
1248	*head = elem;	1393	*head = elem;
1249	}	1394	}
1250		1395
1251	inline void	1396	void inline_size
1252	wlist_del (WL *head, WL elem)	1397	wlist_del (WL *head, WL elem)
1253	{	1398	{
1254	while (*head)	1399	while (*head)
1255	{	1400	{
1256	if (*head == elem)	1401	if (*head == elem)
…		…
1261		1406
1262	head = &(*head)->next;	1407	head = &(*head)->next;
1263	}	1408	}
1264	}	1409	}
1265		1410
1266	inline void	1411	void inline_speed
1267	ev_clear_pending (EV_P_ W w)	1412	ev_clear_pending (EV_P_ W w)
1268	{	1413	{
1269	if (w->pending)	1414	if (w->pending)
1270	{	1415	{
1271	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1416	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1272	w->pending = 0;	1417	w->pending = 0;
1273	}	1418	}
1274	}	1419	}
1275		1420
1276	inline void	1421	void inline_speed
1277	ev_start (EV_P_ W w, int active)	1422	ev_start (EV_P_ W w, int active)
1278	{	1423	{
1279	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1424	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1280	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1425	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1281		1426
1282	w->active = active;	1427	w->active = active;
1283	ev_ref (EV_A);	1428	ev_ref (EV_A);
1284	}	1429	}
1285		1430
1286	inline void	1431	void inline_size
1287	ev_stop (EV_P_ W w)	1432	ev_stop (EV_P_ W w)
1288	{	1433	{
1289	ev_unref (EV_A);	1434	ev_unref (EV_A);
1290	w->active = 0;	1435	w->active = 0;
1291	}	1436	}
1292		1437
1293	/*****************************************************************************/	1438	/*****************************************************************************/
1294		1439
1295	void	1440	void
1296	ev_io_start (EV_P_ struct ev_io *w)	1441	ev_io_start (EV_P_ ev_io *w)
1297	{	1442	{
1298	int fd = w->fd;	1443	int fd = w->fd;
1299		1444
1300	if (ev_is_active (w))	1445	if (expect_false (ev_is_active (w)))
1301	return;	1446	return;
1302		1447
1303	assert (("ev_io_start called with negative fd", fd >= 0));	1448	assert (("ev_io_start called with negative fd", fd >= 0));
1304		1449
1305	ev_start (EV_A_ (W)w, 1);	1450	ev_start (EV_A_ (W)w, 1);
…		…
1308		1453
1309	fd_change (EV_A_ fd);	1454	fd_change (EV_A_ fd);
1310	}	1455	}
1311		1456
1312	void	1457	void
1313	ev_io_stop (EV_P_ struct ev_io *w)	1458	ev_io_stop (EV_P_ ev_io *w)
1314	{	1459	{
1315	ev_clear_pending (EV_A_ (W)w);	1460	ev_clear_pending (EV_A_ (W)w);
1316	if (!ev_is_active (w))	1461	if (expect_false (!ev_is_active (w)))
1317	return;	1462	return;
1318		1463
1319	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1464	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1320		1465
1321	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1466	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
…		…
1323		1468
1324	fd_change (EV_A_ w->fd);	1469	fd_change (EV_A_ w->fd);
1325	}	1470	}
1326		1471
1327	void	1472	void
1328	ev_timer_start (EV_P_ struct ev_timer *w)	1473	ev_timer_start (EV_P_ ev_timer *w)
1329	{	1474	{
1330	if (ev_is_active (w))	1475	if (expect_false (ev_is_active (w)))
1331	return;	1476	return;
1332		1477
1333	((WT)w)->at += mn_now;	1478	((WT)w)->at += mn_now;
1334		1479
1335	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.));
1336		1481
1337	ev_start (EV_A_ (W)w, ++timercnt);	1482	ev_start (EV_A_ (W)w, ++timercnt);
1338	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1483	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1339	timers [timercnt - 1] = w;	1484	timers [timercnt - 1] = w;
1340	upheap ((WT *)timers, timercnt - 1);	1485	upheap ((WT *)timers, timercnt - 1);
1341		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
1342	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1497	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1343	}
1344		1498
1345	void	1499	{
1346	ev_timer_stop (EV_P_ struct ev_timer *w)	1500	int active = ((W)w)->active;
1347	{
1348	ev_clear_pending (EV_A_ (W)w);
1349	if (!ev_is_active (w))
1350	return;
1351		1501
1352	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1502	if (expect_true (--active < --timercnt))
1353
1354	if (((W)w)->active < timercnt--)
1355	{	1503	{
1356	timers [((W)w)->active - 1] = timers [timercnt];	1504	timers [active] = timers [timercnt];
1357	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1505	adjustheap ((WT *)timers, timercnt, active);
1358	}	1506	}
		1507	}
1359		1508
1360	((WT)w)->at -= mn_now;	1509	((WT)w)->at -= mn_now;
1361		1510
1362	ev_stop (EV_A_ (W)w);	1511	ev_stop (EV_A_ (W)w);
1363	}	1512	}
1364		1513
1365	void	1514	void
1366	ev_timer_again (EV_P_ struct ev_timer *w)	1515	ev_timer_again (EV_P_ ev_timer *w)
1367	{	1516	{
1368	if (ev_is_active (w))	1517	if (ev_is_active (w))
1369	{	1518	{
1370	if (w->repeat)	1519	if (w->repeat)
		1520	{
		1521	((WT)w)->at = mn_now + w->repeat;
1371	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1522	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
		1523	}
1372	else	1524	else
1373	ev_timer_stop (EV_A_ w);	1525	ev_timer_stop (EV_A_ w);
1374	}	1526	}
1375	else if (w->repeat)	1527	else if (w->repeat)
		1528	{
		1529	w->at = w->repeat;
1376	ev_timer_start (EV_A_ w);	1530	ev_timer_start (EV_A_ w);
		1531	}
1377	}	1532	}
1378		1533
1379	#if EV_PERIODICS	1534	#if EV_PERIODIC_ENABLE
1380	void	1535	void
1381	ev_periodic_start (EV_P_ struct ev_periodic *w)	1536	ev_periodic_start (EV_P_ ev_periodic *w)
1382	{	1537	{
1383	if (ev_is_active (w))	1538	if (expect_false (ev_is_active (w)))
1384	return;	1539	return;
1385		1540
1386	if (w->reschedule_cb)	1541	if (w->reschedule_cb)
1387	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1542	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1388	else if (w->interval)	1543	else if (w->interval)
…		…
1391	/* 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 */
1392	((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;
1393	}	1548	}
1394		1549
1395	ev_start (EV_A_ (W)w, ++periodiccnt);	1550	ev_start (EV_A_ (W)w, ++periodiccnt);
1396	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1551	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1397	periodics [periodiccnt - 1] = w;	1552	periodics [periodiccnt - 1] = w;
1398	upheap ((WT *)periodics, periodiccnt - 1);	1553	upheap ((WT *)periodics, periodiccnt - 1);
1399		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
1400	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1565	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1401	}
1402		1566
1403	void	1567	{
1404	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1568	int active = ((W)w)->active;
1405	{
1406	ev_clear_pending (EV_A_ (W)w);
1407	if (!ev_is_active (w))
1408	return;
1409		1569
1410	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1570	if (expect_true (--active < --periodiccnt))
1411
1412	if (((W)w)->active < periodiccnt--)
1413	{	1571	{
1414	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1572	periodics [active] = periodics [periodiccnt];
1415	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1573	adjustheap ((WT *)periodics, periodiccnt, active);
1416	}	1574	}
		1575	}
1417		1576
1418	ev_stop (EV_A_ (W)w);	1577	ev_stop (EV_A_ (W)w);
1419	}	1578	}
1420		1579
1421	void	1580	void
1422	ev_periodic_again (EV_P_ struct ev_periodic *w)	1581	ev_periodic_again (EV_P_ ev_periodic *w)
1423	{	1582	{
1424	/* TODO: use adjustheap and recalculation */	1583	/* TODO: use adjustheap and recalculation */
1425	ev_periodic_stop (EV_A_ w);	1584	ev_periodic_stop (EV_A_ w);
1426	ev_periodic_start (EV_A_ w);	1585	ev_periodic_start (EV_A_ w);
1427	}	1586	}
1428	#endif	1587	#endif
1429		1588
1430	void
1431	ev_idle_start (EV_P_ struct ev_idle *w)
1432	{
1433	if (ev_is_active (w))
1434	return;
1435
1436	ev_start (EV_A_ (W)w, ++idlecnt);
1437	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1438	idles [idlecnt - 1] = w;
1439	}
1440
1441	void
1442	ev_idle_stop (EV_P_ struct ev_idle *w)
1443	{
1444	ev_clear_pending (EV_A_ (W)w);
1445	if (ev_is_active (w))
1446	return;
1447
1448	idles [((W)w)->active - 1] = idles [--idlecnt];
1449	ev_stop (EV_A_ (W)w);
1450	}
1451
1452	void
1453	ev_prepare_start (EV_P_ struct ev_prepare *w)
1454	{
1455	if (ev_is_active (w))
1456	return;
1457
1458	ev_start (EV_A_ (W)w, ++preparecnt);
1459	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1460	prepares [preparecnt - 1] = w;
1461	}
1462
1463	void
1464	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1465	{
1466	ev_clear_pending (EV_A_ (W)w);
1467	if (ev_is_active (w))
1468	return;
1469
1470	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1471	ev_stop (EV_A_ (W)w);
1472	}
1473
1474	void
1475	ev_check_start (EV_P_ struct ev_check *w)
1476	{
1477	if (ev_is_active (w))
1478	return;
1479
1480	ev_start (EV_A_ (W)w, ++checkcnt);
1481	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1482	checks [checkcnt - 1] = w;
1483	}
1484
1485	void
1486	ev_check_stop (EV_P_ struct ev_check *w)
1487	{
1488	ev_clear_pending (EV_A_ (W)w);
1489	if (!ev_is_active (w))
1490	return;
1491
1492	checks [((W)w)->active - 1] = checks [--checkcnt];
1493	ev_stop (EV_A_ (W)w);
1494	}
1495
1496	#ifndef SA_RESTART	1589	#ifndef SA_RESTART
1497	# define SA_RESTART 0	1590	# define SA_RESTART 0
1498	#endif	1591	#endif
1499		1592
1500	void	1593	void
1501	ev_signal_start (EV_P_ struct ev_signal *w)	1594	ev_signal_start (EV_P_ ev_signal *w)
1502	{	1595	{
1503	#if EV_MULTIPLICITY	1596	#if EV_MULTIPLICITY
1504	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));
1505	#endif	1598	#endif
1506	if (ev_is_active (w))	1599	if (expect_false (ev_is_active (w)))
1507	return;	1600	return;
1508		1601
1509	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));
1510		1603
1511	ev_start (EV_A_ (W)w, 1);	1604	ev_start (EV_A_ (W)w, 1);
1512	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1605	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1513	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1606	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1514		1607
1515	if (!((WL)w)->next)	1608	if (!((WL)w)->next)
1516	{	1609	{
1517	#if WIN32	1610	#if _WIN32
1518	signal (w->signum, sighandler);	1611	signal (w->signum, sighandler);
1519	#else	1612	#else
1520	struct sigaction sa;	1613	struct sigaction sa;
1521	sa.sa_handler = sighandler;	1614	sa.sa_handler = sighandler;
1522	sigfillset (&sa.sa_mask);	1615	sigfillset (&sa.sa_mask);
…		…
1525	#endif	1618	#endif
1526	}	1619	}
1527	}	1620	}
1528		1621
1529	void	1622	void
1530	ev_signal_stop (EV_P_ struct ev_signal *w)	1623	ev_signal_stop (EV_P_ ev_signal *w)
1531	{	1624	{
1532	ev_clear_pending (EV_A_ (W)w);	1625	ev_clear_pending (EV_A_ (W)w);
1533	if (!ev_is_active (w))	1626	if (expect_false (!ev_is_active (w)))
1534	return;	1627	return;
1535		1628
1536	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1629	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1537	ev_stop (EV_A_ (W)w);	1630	ev_stop (EV_A_ (W)w);
1538		1631
1539	if (!signals [w->signum - 1].head)	1632	if (!signals [w->signum - 1].head)
1540	signal (w->signum, SIG_DFL);	1633	signal (w->signum, SIG_DFL);
1541	}	1634	}
1542		1635
1543	void	1636	void
1544	ev_child_start (EV_P_ struct ev_child *w)	1637	ev_child_start (EV_P_ ev_child *w)
1545	{	1638	{
1546	#if EV_MULTIPLICITY	1639	#if EV_MULTIPLICITY
1547	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));
1548	#endif	1641	#endif
1549	if (ev_is_active (w))	1642	if (expect_false (ev_is_active (w)))
1550	return;	1643	return;
1551		1644
1552	ev_start (EV_A_ (W)w, 1);	1645	ev_start (EV_A_ (W)w, 1);
1553	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1646	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1554	}	1647	}
1555		1648
1556	void	1649	void
1557	ev_child_stop (EV_P_ struct ev_child *w)	1650	ev_child_stop (EV_P_ ev_child *w)
1558	{	1651	{
1559	ev_clear_pending (EV_A_ (W)w);	1652	ev_clear_pending (EV_A_ (W)w);
1560	if (!ev_is_active (w))	1653	if (expect_false (!ev_is_active (w)))
1561	return;	1654	return;
1562		1655
1563	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1656	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1564	ev_stop (EV_A_ (W)w);	1657	ev_stop (EV_A_ (W)w);
1565	}	1658	}
1566		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
1567	/*****************************************************************************/	1887	/*****************************************************************************/
1568		1888
1569	struct ev_once	1889	struct ev_once
1570	{	1890	{
1571	struct ev_io io;	1891	ev_io io;
1572	struct ev_timer to;	1892	ev_timer to;
1573	void (*cb)(int revents, void *arg);	1893	void (*cb)(int revents, void *arg);
1574	void *arg;	1894	void *arg;
1575	};	1895	};
1576		1896
1577	static void	1897	static void
…		…
1586		1906
1587	cb (revents, arg);	1907	cb (revents, arg);
1588	}	1908	}
1589		1909
1590	static void	1910	static void
1591	once_cb_io (EV_P_ struct ev_io *w, int revents)	1911	once_cb_io (EV_P_ ev_io *w, int revents)
1592	{	1912	{
1593	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);
1594	}	1914	}
1595		1915
1596	static void	1916	static void
1597	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1917	once_cb_to (EV_P_ ev_timer *w, int revents)
1598	{	1918	{
1599	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);
1600	}	1920	}
1601		1921
1602	void	1922	void
1603	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)
1604	{	1924	{
1605	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));
1606		1926
1607	if (!once)	1927	if (expect_false (!once))
		1928	{
1608	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1929	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1609	else	1930	return;
1610	{	1931	}
		1932
1611	once->cb = cb;	1933	once->cb = cb;
1612	once->arg = arg;	1934	once->arg = arg;
1613		1935
1614	ev_init (&once->io, once_cb_io);	1936	ev_init (&once->io, once_cb_io);
1615	if (fd >= 0)	1937	if (fd >= 0)
1616	{	1938	{
1617	ev_io_set (&once->io, fd, events);	1939	ev_io_set (&once->io, fd, events);
1618	ev_io_start (EV_A_ &once->io);	1940	ev_io_start (EV_A_ &once->io);
1619	}	1941	}
1620		1942
1621	ev_init (&once->to, once_cb_to);	1943	ev_init (&once->to, once_cb_to);
1622	if (timeout >= 0.)	1944	if (timeout >= 0.)
1623	{	1945	{
1624	ev_timer_set (&once->to, timeout, 0.);	1946	ev_timer_set (&once->to, timeout, 0.);
1625	ev_timer_start (EV_A_ &once->to);	1947	ev_timer_start (EV_A_ &once->to);
1626	}
1627	}	1948	}
1628	}	1949	}
1629		1950
1630	#ifdef __cplusplus	1951	#ifdef __cplusplus
1631	}	1952	}

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