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Comparing libev/ev.c (file contents):
Revision 1.93 by root, Sun Nov 11 01:07:35 2007 UTC vs.
Revision 1.171 by root, Sun Dec 9 02:12:43 2007 UTC

…		…
32	#ifdef __cplusplus	32	#ifdef __cplusplus
33	extern "C" {	33	extern "C" {
34	#endif	34	#endif
35		35
36	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
37	# include "config.h"	40	# include "config.h"
		41	# endif
38		42
39	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
40	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
41	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
42	# endif	57	# endif
43		58
		59	# ifndef EV_USE_SELECT
44	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
45	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
46	# endif	65	# endif
47		66
		67	# ifndef EV_USE_POLL
48	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
49	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
50	# endif	73	# endif
51		74
		75	# ifndef EV_USE_EPOLL
52	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
53	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
54	# endif	81	# endif
55		82
		83	# ifndef EV_USE_KQUEUE
56	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
57	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
		97	# endif
		98
		99	# ifndef EV_USE_INOTIFY
		100	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		101	# define EV_USE_INOTIFY 1
		102	# else
		103	# define EV_USE_INOTIFY 0
		104	# endif
58	# endif	105	# endif
59		106
60	#endif	107	#endif
61		108
62	#include <math.h>	109	#include <math.h>
…		…
71	#include <sys/types.h>	118	#include <sys/types.h>
72	#include <time.h>	119	#include <time.h>
73		120
74	#include <signal.h>	121	#include <signal.h>
75		122
76	#ifndef WIN32
77	# include <unistd.h>
78	# include <sys/time.h>
79	# include <sys/wait.h>
80	#endif
81	/**/
82
83	#ifndef EV_USE_MONOTONIC
84	# define EV_USE_MONOTONIC 1
85	#endif
86
87	#ifndef EV_USE_SELECT
88	# define EV_USE_SELECT 1
89	#endif
90
91	#ifndef EV_USE_POLL
92	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
93	#endif
94
95	#ifndef EV_USE_EPOLL
96	# define EV_USE_EPOLL 0
97	#endif
98
99	#ifndef EV_USE_KQUEUE
100	# define EV_USE_KQUEUE 0
101	#endif
102
103	#ifndef EV_USE_WIN32
104	# ifdef WIN32
105	# define EV_USE_WIN32 0 /* it does not exist, use select */
106	# undef EV_USE_SELECT
107	# define EV_USE_SELECT 1
108	# else
109	# define EV_USE_WIN32 0
110	# endif
111	#endif
112
113	#ifndef EV_USE_REALTIME
114	# define EV_USE_REALTIME 1
115	#endif
116
117	/**/
118
119	#ifndef CLOCK_MONOTONIC
120	# undef EV_USE_MONOTONIC
121	# define EV_USE_MONOTONIC 0
122	#endif
123
124	#ifndef CLOCK_REALTIME
125	# undef EV_USE_REALTIME
126	# define EV_USE_REALTIME 0
127	#endif
128
129	/**/
130
131	#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) */
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 */
135
136	#ifdef EV_H	123	#ifdef EV_H
137	# include EV_H	124	# include EV_H
138	#else	125	#else
139	# include "ev.h"	126	# include "ev.h"
140	#endif	127	#endif
141		128
		129	#ifndef _WIN32
		130	# include <sys/time.h>
		131	# include <sys/wait.h>
		132	# include <unistd.h>
		133	#else
		134	# define WIN32_LEAN_AND_MEAN
		135	# include <windows.h>
		136	# ifndef EV_SELECT_IS_WINSOCKET
		137	# define EV_SELECT_IS_WINSOCKET 1
		138	# endif
		139	#endif
		140
		141	/**/
		142
		143	#ifndef EV_USE_MONOTONIC
		144	# define EV_USE_MONOTONIC 0
		145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
		149	#endif
		150
		151	#ifndef EV_USE_SELECT
		152	# define EV_USE_SELECT 1
		153	#endif
		154
		155	#ifndef EV_USE_POLL
		156	# ifdef _WIN32
		157	# define EV_USE_POLL 0
		158	# else
		159	# define EV_USE_POLL 1
		160	# endif
		161	#endif
		162
		163	#ifndef EV_USE_EPOLL
		164	# define EV_USE_EPOLL 0
		165	#endif
		166
		167	#ifndef EV_USE_KQUEUE
		168	# define EV_USE_KQUEUE 0
		169	#endif
		170
		171	#ifndef EV_USE_PORT
		172	# define EV_USE_PORT 0
		173	#endif
		174
		175	#ifndef EV_USE_INOTIFY
		176	# define EV_USE_INOTIFY 0
		177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
		182	# else
		183	# define EV_PID_HASHSIZE 16
		184	# endif
		185	#endif
		186
		187	#ifndef EV_INOTIFY_HASHSIZE
		188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
		193	#endif
		194
		195	/**/
		196
		197	#ifndef CLOCK_MONOTONIC
		198	# undef EV_USE_MONOTONIC
		199	# define EV_USE_MONOTONIC 0
		200	#endif
		201
		202	#ifndef CLOCK_REALTIME
		203	# undef EV_USE_REALTIME
		204	# define EV_USE_REALTIME 0
		205	#endif
		206
		207	#if EV_SELECT_IS_WINSOCKET
		208	# include <winsock.h>
		209	#endif
		210
		211	#if !EV_STAT_ENABLE
		212	# define EV_USE_INOTIFY 0
		213	#endif
		214
		215	#if EV_USE_INOTIFY
		216	# include <sys/inotify.h>
		217	#endif
		218
		219	/**/
		220
		221	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
		222	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
		223	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
		224
142	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
143	# define expect(expr,value) __builtin_expect ((expr),(value))	226	# define expect(expr,value) __builtin_expect ((expr),(value))
144	# define inline inline	227	# define noinline __attribute__ ((noinline))
145	#else	228	#else
146	# define expect(expr,value) (expr)	229	# define expect(expr,value) (expr)
147	# define inline static	230	# define noinline
		231	# if __STDC_VERSION__ < 199901L
		232	# define inline
		233	# endif
148	#endif	234	#endif
149		235
150	#define expect_false(expr) expect ((expr) != 0, 0)	236	#define expect_false(expr) expect ((expr) != 0, 0)
151	#define expect_true(expr) expect ((expr) != 0, 1)	237	#define expect_true(expr) expect ((expr) != 0, 1)
		238	#define inline_size static inline
		239
		240	#if EV_MINIMAL
		241	# define inline_speed static noinline
		242	#else
		243	# define inline_speed static inline
		244	#endif
152		245
153	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	246	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
154	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	247	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
155		248
		249	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		250	#define EMPTY2(a,b) /* used to suppress some warnings */
		251
156	typedef struct ev_watcher *W;	252	typedef ev_watcher *W;
157	typedef struct ev_watcher_list *WL;	253	typedef ev_watcher_list *WL;
158	typedef struct ev_watcher_time *WT;	254	typedef ev_watcher_time *WT;
159		255
160	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	256	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
161		257
		258	#ifdef _WIN32
162	#include "ev_win32.c"	259	# include "ev_win32.c"
		260	#endif
163		261
164	/*****************************************************************************/	262	/*****************************************************************************/
165		263
166	static void (*syserr_cb)(const char *msg);	264	static void (*syserr_cb)(const char *msg);
167		265
		266	void
168	void ev_set_syserr_cb (void (*cb)(const char *msg))	267	ev_set_syserr_cb (void (*cb)(const char *msg))
169	{	268	{
170	syserr_cb = cb;	269	syserr_cb = cb;
171	}	270	}
172		271
173	static void	272	static void noinline
174	syserr (const char *msg)	273	syserr (const char *msg)
175	{	274	{
176	if (!msg)	275	if (!msg)
177	msg = "(libev) system error";	276	msg = "(libev) system error";
178		277
…		…
185	}	284	}
186	}	285	}
187		286
188	static void *(*alloc)(void *ptr, long size);	287	static void *(*alloc)(void *ptr, long size);
189		288
		289	void
190	void ev_set_allocator (void *(*cb)(void *ptr, long size))	290	ev_set_allocator (void *(*cb)(void *ptr, long size))
191	{	291	{
192	alloc = cb;	292	alloc = cb;
193	}	293	}
194		294
195	static void *	295	inline_speed void *
196	ev_realloc (void *ptr, long size)	296	ev_realloc (void *ptr, long size)
197	{	297	{
198	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	298	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
199		299
200	if (!ptr && size)	300	if (!ptr && size)
…		…
214	typedef struct	314	typedef struct
215	{	315	{
216	WL head;	316	WL head;
217	unsigned char events;	317	unsigned char events;
218	unsigned char reify;	318	unsigned char reify;
		319	#if EV_SELECT_IS_WINSOCKET
		320	SOCKET handle;
		321	#endif
219	} ANFD;	322	} ANFD;
220		323
221	typedef struct	324	typedef struct
222	{	325	{
223	W w;	326	W w;
224	int events;	327	int events;
225	} ANPENDING;	328	} ANPENDING;
226		329
		330	#if EV_USE_INOTIFY
		331	typedef struct
		332	{
		333	WL head;
		334	} ANFS;
		335	#endif
		336
227	#if EV_MULTIPLICITY	337	#if EV_MULTIPLICITY
228		338
229	struct ev_loop	339	struct ev_loop
230	{	340	{
231	ev_tstamp ev_rt_now;	341	ev_tstamp ev_rt_now;
		342	#define ev_rt_now ((loop)->ev_rt_now)
232	#define VAR(name,decl) decl;	343	#define VAR(name,decl) decl;
233	#include "ev_vars.h"	344	#include "ev_vars.h"
234	#undef VAR	345	#undef VAR
235	};	346	};
236	#include "ev_wrap.h"	347	#include "ev_wrap.h"
237		348
238	struct ev_loop default_loop_struct;	349	static struct ev_loop default_loop_struct;
239	static struct ev_loop *default_loop;	350	struct ev_loop *ev_default_loop_ptr;
240		351
241	#else	352	#else
242		353
243	ev_tstamp ev_rt_now;	354	ev_tstamp ev_rt_now;
244	#define VAR(name,decl) static decl;	355	#define VAR(name,decl) static decl;
245	#include "ev_vars.h"	356	#include "ev_vars.h"
246	#undef VAR	357	#undef VAR
247		358
248	static int default_loop;	359	static int ev_default_loop_ptr;
249		360
250	#endif	361	#endif
251		362
252	/*****************************************************************************/	363	/*****************************************************************************/
253		364
…		…
263	gettimeofday (&tv, 0);	374	gettimeofday (&tv, 0);
264	return tv.tv_sec + tv.tv_usec * 1e-6;	375	return tv.tv_sec + tv.tv_usec * 1e-6;
265	#endif	376	#endif
266	}	377	}
267		378
268	inline ev_tstamp	379	ev_tstamp inline_size
269	get_clock (void)	380	get_clock (void)
270	{	381	{
271	#if EV_USE_MONOTONIC	382	#if EV_USE_MONOTONIC
272	if (expect_true (have_monotonic))	383	if (expect_true (have_monotonic))
273	{	384	{
…		…
286	{	397	{
287	return ev_rt_now;	398	return ev_rt_now;
288	}	399	}
289	#endif	400	#endif
290		401
291	#define array_roundsize(type,n) ((n) | 4 & ~3)	402	int inline_size
		403	array_nextsize (int elem, int cur, int cnt)
		404	{
		405	int ncur = cur + 1;
		406
		407	do
		408	ncur <<= 1;
		409	while (cnt > ncur);
		410
		411	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		412	if (elem * ncur > 4096)
		413	{
		414	ncur *= elem;
		415	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		416	ncur = ncur - sizeof (void *) * 4;
		417	ncur /= elem;
		418	}
		419
		420	return ncur;
		421	}
		422
		423	static noinline void *
		424	array_realloc (int elem, void *base, int *cur, int cnt)
		425	{
		426	*cur = array_nextsize (elem, *cur, cnt);
		427	return ev_realloc (base, elem * *cur);
		428	}
292		429
293	#define array_needsize(type,base,cur,cnt,init) \	430	#define array_needsize(type,base,cur,cnt,init) \
294	if (expect_false ((cnt) > cur)) \	431	if (expect_false ((cnt) > (cur))) \
295	{ \	432	{ \
296	int newcnt = cur; \	433	int ocur_ = (cur); \
297	do \	434	(base) = (type *)array_realloc \
298	{ \	435	(sizeof (type), (base), &(cur), (cnt)); \
299	newcnt = array_roundsize (type, newcnt << 1); \	436	init ((base) + (ocur_), (cur) - ocur_); \
300	} \
301	while ((cnt) > newcnt); \
302	\
303	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
304	init (base + cur, newcnt - cur); \
305	cur = newcnt; \
306	}	437	}
307		438
		439	#if 0
308	#define array_slim(type,stem) \	440	#define array_slim(type,stem) \
309	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	441	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
310	{ \	442	{ \
311	stem ## max = array_roundsize (stem ## cnt >> 1); \	443	stem ## max = array_roundsize (stem ## cnt >> 1); \
312	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	444	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
313	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	445	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
314	}	446	}
315		447	#endif
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		448
321	#define array_free(stem, idx) \	449	#define array_free(stem, idx) \
322	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	450	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
323		451
324	/*****************************************************************************/	452	/*****************************************************************************/
325		453
326	static void	454	void noinline
		455	ev_feed_event (EV_P_ void *w, int revents)
		456	{
		457	W w_ = (W)w;
		458	int pri = ABSPRI (w_);
		459
		460	if (expect_false (w_->pending))
		461	pendings [pri][w_->pending - 1].events |= revents;
		462	else
		463	{
		464	w_->pending = ++pendingcnt [pri];
		465	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		466	pendings [pri][w_->pending - 1].w = w_;
		467	pendings [pri][w_->pending - 1].events = revents;
		468	}
		469	}
		470
		471	void inline_size
		472	queue_events (EV_P_ W *events, int eventcnt, int type)
		473	{
		474	int i;
		475
		476	for (i = 0; i < eventcnt; ++i)
		477	ev_feed_event (EV_A_ events [i], type);
		478	}
		479
		480	/*****************************************************************************/
		481
		482	void inline_size
327	anfds_init (ANFD *base, int count)	483	anfds_init (ANFD *base, int count)
328	{	484	{
329	while (count--)	485	while (count--)
330	{	486	{
331	base->head = 0;	487	base->head = 0;
…		…
334		490
335	++base;	491	++base;
336	}	492	}
337	}	493	}
338		494
339	void	495	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)	496	fd_event (EV_P_ int fd, int revents)
367	{	497	{
368	ANFD *anfd = anfds + fd;	498	ANFD *anfd = anfds + fd;
369	struct ev_io *w;	499	ev_io *w;
370		500
371	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	501	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
372	{	502	{
373	int ev = w->events & revents;	503	int ev = w->events & revents;
374		504
375	if (ev)	505	if (ev)
376	ev_feed_event (EV_A_ (W)w, ev);	506	ev_feed_event (EV_A_ (W)w, ev);
…		…
378	}	508	}
379		509
380	void	510	void
381	ev_feed_fd_event (EV_P_ int fd, int revents)	511	ev_feed_fd_event (EV_P_ int fd, int revents)
382	{	512	{
		513	if (fd >= 0 && fd < anfdmax)
383	fd_event (EV_A_ fd, revents);	514	fd_event (EV_A_ fd, revents);
384	}	515	}
385		516
386	/*****************************************************************************/	517	void inline_size
387
388	static void
389	fd_reify (EV_P)	518	fd_reify (EV_P)
390	{	519	{
391	int i;	520	int i;
392		521
393	for (i = 0; i < fdchangecnt; ++i)	522	for (i = 0; i < fdchangecnt; ++i)
394	{	523	{
395	int fd = fdchanges [i];	524	int fd = fdchanges [i];
396	ANFD *anfd = anfds + fd;	525	ANFD *anfd = anfds + fd;
397	struct ev_io *w;	526	ev_io *w;
398		527
399	int events = 0;	528	int events = 0;
400		529
401	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	530	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
402	events |= w->events;	531	events |= w->events;
403		532
		533	#if EV_SELECT_IS_WINSOCKET
		534	if (events)
		535	{
		536	unsigned long argp;
		537	anfd->handle = _get_osfhandle (fd);
		538	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		539	}
		540	#endif
		541
404	anfd->reify = 0;	542	anfd->reify = 0;
405		543
406	method_modify (EV_A_ fd, anfd->events, events);	544	backend_modify (EV_A_ fd, anfd->events, events);
407	anfd->events = events;	545	anfd->events = events;
408	}	546	}
409		547
410	fdchangecnt = 0;	548	fdchangecnt = 0;
411	}	549	}
412		550
413	static void	551	void inline_size
414	fd_change (EV_P_ int fd)	552	fd_change (EV_P_ int fd)
415	{	553	{
416	if (anfds [fd].reify)	554	if (expect_false (anfds [fd].reify))
417	return;	555	return;
418		556
419	anfds [fd].reify = 1;	557	anfds [fd].reify = 1;
420		558
421	++fdchangecnt;	559	++fdchangecnt;
422	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	560	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
423	fdchanges [fdchangecnt - 1] = fd;	561	fdchanges [fdchangecnt - 1] = fd;
424	}	562	}
425		563
426	static void	564	void inline_speed
427	fd_kill (EV_P_ int fd)	565	fd_kill (EV_P_ int fd)
428	{	566	{
429	struct ev_io *w;	567	ev_io *w;
430		568
431	while ((w = (struct ev_io *)anfds [fd].head))	569	while ((w = (ev_io *)anfds [fd].head))
432	{	570	{
433	ev_io_stop (EV_A_ w);	571	ev_io_stop (EV_A_ w);
434	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	572	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
435	}	573	}
436	}	574	}
437		575
438	static int	576	int inline_size
439	fd_valid (int fd)	577	fd_valid (int fd)
440	{	578	{
441	#ifdef WIN32	579	#ifdef _WIN32
442	return !!win32_get_osfhandle (fd);	580	return _get_osfhandle (fd) != -1;
443	#else	581	#else
444	return fcntl (fd, F_GETFD) != -1;	582	return fcntl (fd, F_GETFD) != -1;
445	#endif	583	#endif
446	}	584	}
447		585
448	/* called on EBADF to verify fds */	586	/* called on EBADF to verify fds */
449	static void	587	static void noinline
450	fd_ebadf (EV_P)	588	fd_ebadf (EV_P)
451	{	589	{
452	int fd;	590	int fd;
453		591
454	for (fd = 0; fd < anfdmax; ++fd)	592	for (fd = 0; fd < anfdmax; ++fd)
…		…
456	if (!fd_valid (fd) == -1 && errno == EBADF)	594	if (!fd_valid (fd) == -1 && errno == EBADF)
457	fd_kill (EV_A_ fd);	595	fd_kill (EV_A_ fd);
458	}	596	}
459		597
460	/* called on ENOMEM in select/poll to kill some fds and retry */	598	/* called on ENOMEM in select/poll to kill some fds and retry */
461	static void	599	static void noinline
462	fd_enomem (EV_P)	600	fd_enomem (EV_P)
463	{	601	{
464	int fd;	602	int fd;
465		603
466	for (fd = anfdmax; fd--; )	604	for (fd = anfdmax; fd--; )
…		…
469	fd_kill (EV_A_ fd);	607	fd_kill (EV_A_ fd);
470	return;	608	return;
471	}	609	}
472	}	610	}
473		611
474	/* usually called after fork if method needs to re-arm all fds from scratch */	612	/* usually called after fork if backend needs to re-arm all fds from scratch */
475	static void	613	static void noinline
476	fd_rearm_all (EV_P)	614	fd_rearm_all (EV_P)
477	{	615	{
478	int fd;	616	int fd;
479		617
480	/* this should be highly optimised to not do anything but set a flag */
481	for (fd = 0; fd < anfdmax; ++fd)	618	for (fd = 0; fd < anfdmax; ++fd)
482	if (anfds [fd].events)	619	if (anfds [fd].events)
483	{	620	{
484	anfds [fd].events = 0;	621	anfds [fd].events = 0;
485	fd_change (EV_A_ fd);	622	fd_change (EV_A_ fd);
486	}	623	}
487	}	624	}
488		625
489	/*****************************************************************************/	626	/*****************************************************************************/
490		627
491	static void	628	void inline_speed
492	upheap (WT *heap, int k)	629	upheap (WT *heap, int k)
493	{	630	{
494	WT w = heap [k];	631	WT w = heap [k];
495		632
496	while (k && heap [k >> 1]->at > w->at)	633	while (k && heap [k >> 1]->at > w->at)
…		…
503	heap [k] = w;	640	heap [k] = w;
504	((W)heap [k])->active = k + 1;	641	((W)heap [k])->active = k + 1;
505		642
506	}	643	}
507		644
508	static void	645	void inline_speed
509	downheap (WT *heap, int N, int k)	646	downheap (WT *heap, int N, int k)
510	{	647	{
511	WT w = heap [k];	648	WT w = heap [k];
512		649
513	while (k < (N >> 1))	650	while (k < (N >> 1))
…		…
527		664
528	heap [k] = w;	665	heap [k] = w;
529	((W)heap [k])->active = k + 1;	666	((W)heap [k])->active = k + 1;
530	}	667	}
531		668
532	inline void	669	void inline_size
533	adjustheap (WT *heap, int N, int k, ev_tstamp at)	670	adjustheap (WT *heap, int N, int k)
534	{	671	{
535	ev_tstamp old_at = heap [k]->at;	672	upheap (heap, k);
536	heap [k]->at = at;
537
538	if (old_at < at)
539	downheap (heap, N, k);	673	downheap (heap, N, k);
540	else
541	upheap (heap, k);
542	}	674	}
543		675
544	/*****************************************************************************/	676	/*****************************************************************************/
545		677
546	typedef struct	678	typedef struct
…		…
552	static ANSIG *signals;	684	static ANSIG *signals;
553	static int signalmax;	685	static int signalmax;
554		686
555	static int sigpipe [2];	687	static int sigpipe [2];
556	static sig_atomic_t volatile gotsig;	688	static sig_atomic_t volatile gotsig;
557	static struct ev_io sigev;	689	static ev_io sigev;
558		690
559	static void	691	void inline_size
560	signals_init (ANSIG *base, int count)	692	signals_init (ANSIG *base, int count)
561	{	693	{
562	while (count--)	694	while (count--)
563	{	695	{
564	base->head = 0;	696	base->head = 0;
…		…
569	}	701	}
570		702
571	static void	703	static void
572	sighandler (int signum)	704	sighandler (int signum)
573	{	705	{
574	#if WIN32	706	#if _WIN32
575	signal (signum, sighandler);	707	signal (signum, sighandler);
576	#endif	708	#endif
577		709
578	signals [signum - 1].gotsig = 1;	710	signals [signum - 1].gotsig = 1;
579		711
580	if (!gotsig)	712	if (!gotsig)
581	{	713	{
582	int old_errno = errno;	714	int old_errno = errno;
583	gotsig = 1;	715	gotsig = 1;
584	#ifdef WIN32
585	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
586	#else
587	write (sigpipe [1], &signum, 1);	716	write (sigpipe [1], &signum, 1);
588	#endif
589	errno = old_errno;	717	errno = old_errno;
590	}	718	}
591	}	719	}
592		720
593	void	721	void noinline
594	ev_feed_signal_event (EV_P_ int signum)	722	ev_feed_signal_event (EV_P_ int signum)
595	{	723	{
596	WL w;	724	WL w;
597		725
598	#if EV_MULTIPLICITY	726	#if EV_MULTIPLICITY
599	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	727	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
600	#endif	728	#endif
601		729
602	--signum;	730	--signum;
603		731
604	if (signum < 0 || signum >= signalmax)	732	if (signum < 0 || signum >= signalmax)
…		…
609	for (w = signals [signum].head; w; w = w->next)	737	for (w = signals [signum].head; w; w = w->next)
610	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	738	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
611	}	739	}
612		740
613	static void	741	static void
614	sigcb (EV_P_ struct ev_io *iow, int revents)	742	sigcb (EV_P_ ev_io *iow, int revents)
615	{	743	{
616	int signum;	744	int signum;
617		745
618	#ifdef WIN32
619	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
620	#else
621	read (sigpipe [0], &revents, 1);	746	read (sigpipe [0], &revents, 1);
622	#endif
623	gotsig = 0;	747	gotsig = 0;
624		748
625	for (signum = signalmax; signum--; )	749	for (signum = signalmax; signum--; )
626	if (signals [signum].gotsig)	750	if (signals [signum].gotsig)
627	ev_feed_signal_event (EV_A_ signum + 1);	751	ev_feed_signal_event (EV_A_ signum + 1);
628	}	752	}
629		753
630	static void	754	void inline_speed
		755	fd_intern (int fd)
		756	{
		757	#ifdef _WIN32
		758	int arg = 1;
		759	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		760	#else
		761	fcntl (fd, F_SETFD, FD_CLOEXEC);
		762	fcntl (fd, F_SETFL, O_NONBLOCK);
		763	#endif
		764	}
		765
		766	static void noinline
631	siginit (EV_P)	767	siginit (EV_P)
632	{	768	{
633	#ifndef WIN32	769	fd_intern (sigpipe [0]);
634	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	770	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		771
642	ev_io_set (&sigev, sigpipe [0], EV_READ);	772	ev_io_set (&sigev, sigpipe [0], EV_READ);
643	ev_io_start (EV_A_ &sigev);	773	ev_io_start (EV_A_ &sigev);
644	ev_unref (EV_A); /* child watcher should not keep loop alive */	774	ev_unref (EV_A); /* child watcher should not keep loop alive */
645	}	775	}
646		776
647	/*****************************************************************************/	777	/*****************************************************************************/
648		778
649	static struct ev_child *childs [PID_HASHSIZE];	779	static ev_child *childs [EV_PID_HASHSIZE];
650		780
651	#ifndef WIN32	781	#ifndef _WIN32
652		782
653	static struct ev_signal childev;	783	static ev_signal childev;
		784
		785	void inline_speed
		786	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		787	{
		788	ev_child *w;
		789
		790	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		791	if (w->pid == pid || !w->pid)
		792	{
		793	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		794	w->rpid = pid;
		795	w->rstatus = status;
		796	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		797	}
		798	}
654		799
655	#ifndef WCONTINUED	800	#ifndef WCONTINUED
656	# define WCONTINUED 0	801	# define WCONTINUED 0
657	#endif	802	#endif
658		803
659	static void	804	static void
660	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
661	{
662	struct ev_child *w;
663
664	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
665	if (w->pid == pid || !w->pid)
666	{
667	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
668	w->rpid = pid;
669	w->rstatus = status;
670	ev_feed_event (EV_A_ (W)w, EV_CHILD);
671	}
672	}
673
674	static void
675	childcb (EV_P_ struct ev_signal *sw, int revents)	805	childcb (EV_P_ ev_signal *sw, int revents)
676	{	806	{
677	int pid, status;	807	int pid, status;
678		808
		809	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
679	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	810	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
680	{	811	if (!WCONTINUED
		812	|| errno != EINVAL
		813	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		814	return;
		815
681	/* make sure we are called again until all childs have been reaped */	816	/* make sure we are called again until all childs have been reaped */
		817	/* 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);	818	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
683		819
684	child_reap (EV_A_ sw, pid, pid, status);	820	child_reap (EV_A_ sw, pid, pid, status);
		821	if (EV_PID_HASHSIZE > 1)
685	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	822	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
686	}
687	}	823	}
688		824
689	#endif	825	#endif
690		826
691	/*****************************************************************************/	827	/*****************************************************************************/
692		828
		829	#if EV_USE_PORT
		830	# include "ev_port.c"
		831	#endif
693	#if EV_USE_KQUEUE	832	#if EV_USE_KQUEUE
694	# include "ev_kqueue.c"	833	# include "ev_kqueue.c"
695	#endif	834	#endif
696	#if EV_USE_EPOLL	835	#if EV_USE_EPOLL
697	# include "ev_epoll.c"	836	# include "ev_epoll.c"
…		…
714	{	853	{
715	return EV_VERSION_MINOR;	854	return EV_VERSION_MINOR;
716	}	855	}
717		856
718	/* return true if we are running with elevated privileges and should ignore env variables */	857	/* return true if we are running with elevated privileges and should ignore env variables */
719	static int	858	int inline_size
720	enable_secure (void)	859	enable_secure (void)
721	{	860	{
722	#ifdef WIN32	861	#ifdef _WIN32
723	return 0;	862	return 0;
724	#else	863	#else
725	return getuid () != geteuid ()	864	return getuid () != geteuid ()
726	|| getgid () != getegid ();	865	|| getgid () != getegid ();
727	#endif	866	#endif
728	}	867	}
729		868
730	int	869	unsigned int
731	ev_method (EV_P)	870	ev_supported_backends (void)
732	{	871	{
733	return method;	872	unsigned int flags = 0;
734	}
735		873
736	static void	874	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
737	loop_init (EV_P_ int methods)	875	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		876	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		877	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		878	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		879
		880	return flags;
		881	}
		882
		883	unsigned int
		884	ev_recommended_backends (void)
738	{	885	{
739	if (!method)	886	unsigned int flags = ev_supported_backends ();
		887
		888	#ifndef __NetBSD__
		889	/* kqueue is borked on everything but netbsd apparently */
		890	/* it usually doesn't work correctly on anything but sockets and pipes */
		891	flags &= ~EVBACKEND_KQUEUE;
		892	#endif
		893	#ifdef __APPLE__
		894	// flags &= ~EVBACKEND_KQUEUE; for documentation
		895	flags &= ~EVBACKEND_POLL;
		896	#endif
		897
		898	return flags;
		899	}
		900
		901	unsigned int
		902	ev_embeddable_backends (void)
		903	{
		904	return EVBACKEND_EPOLL
		905	| EVBACKEND_KQUEUE
		906	| EVBACKEND_PORT;
		907	}
		908
		909	unsigned int
		910	ev_backend (EV_P)
		911	{
		912	return backend;
		913	}
		914
		915	unsigned int
		916	ev_loop_count (EV_P)
		917	{
		918	return loop_count;
		919	}
		920
		921	static void noinline
		922	loop_init (EV_P_ unsigned int flags)
		923	{
		924	if (!backend)
740	{	925	{
741	#if EV_USE_MONOTONIC	926	#if EV_USE_MONOTONIC
742	{	927	{
743	struct timespec ts;	928	struct timespec ts;
744	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	929	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
749	ev_rt_now = ev_time ();	934	ev_rt_now = ev_time ();
750	mn_now = get_clock ();	935	mn_now = get_clock ();
751	now_floor = mn_now;	936	now_floor = mn_now;
752	rtmn_diff = ev_rt_now - mn_now;	937	rtmn_diff = ev_rt_now - mn_now;
753		938
754	if (methods == EVMETHOD_AUTO)	939	/* pid check not overridable via env */
755	if (!enable_secure () && getenv ("LIBEV_METHODS"))	940	#ifndef _WIN32
		941	if (flags & EVFLAG_FORKCHECK)
		942	curpid = getpid ();
		943	#endif
		944
		945	if (!(flags & EVFLAG_NOENV)
		946	&& !enable_secure ()
		947	&& getenv ("LIBEV_FLAGS"))
756	methods = atoi (getenv ("LIBEV_METHODS"));	948	flags = atoi (getenv ("LIBEV_FLAGS"));
757	else
758	methods = EVMETHOD_ANY;
759		949
760	method = 0;	950	if (!(flags & 0x0000ffffUL))
		951	flags |= ev_recommended_backends ();
		952
		953	backend = 0;
		954	backend_fd = -1;
761	#if EV_USE_WIN32	955	#if EV_USE_INOTIFY
762	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	956	fs_fd = -2;
		957	#endif
		958
		959	#if EV_USE_PORT
		960	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
763	#endif	961	#endif
764	#if EV_USE_KQUEUE	962	#if EV_USE_KQUEUE
765	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	963	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
766	#endif	964	#endif
767	#if EV_USE_EPOLL	965	#if EV_USE_EPOLL
768	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	966	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
769	#endif	967	#endif
770	#if EV_USE_POLL	968	#if EV_USE_POLL
771	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	969	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
772	#endif	970	#endif
773	#if EV_USE_SELECT	971	#if EV_USE_SELECT
774	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	972	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
775	#endif	973	#endif
776		974
777	ev_init (&sigev, sigcb);	975	ev_init (&sigev, sigcb);
778	ev_set_priority (&sigev, EV_MAXPRI);	976	ev_set_priority (&sigev, EV_MAXPRI);
779	}	977	}
780	}	978	}
781		979
782	void	980	static void noinline
783	loop_destroy (EV_P)	981	loop_destroy (EV_P)
784	{	982	{
785	int i;	983	int i;
786		984
787	#if EV_USE_WIN32	985	#if EV_USE_INOTIFY
788	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	986	if (fs_fd >= 0)
		987	close (fs_fd);
		988	#endif
		989
		990	if (backend_fd >= 0)
		991	close (backend_fd);
		992
		993	#if EV_USE_PORT
		994	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
789	#endif	995	#endif
790	#if EV_USE_KQUEUE	996	#if EV_USE_KQUEUE
791	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	997	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
792	#endif	998	#endif
793	#if EV_USE_EPOLL	999	#if EV_USE_EPOLL
794	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1000	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
795	#endif	1001	#endif
796	#if EV_USE_POLL	1002	#if EV_USE_POLL
797	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1003	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
798	#endif	1004	#endif
799	#if EV_USE_SELECT	1005	#if EV_USE_SELECT
800	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1006	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
801	#endif	1007	#endif
802		1008
803	for (i = NUMPRI; i--; )	1009	for (i = NUMPRI; i--; )
		1010	{
804	array_free (pending, [i]);	1011	array_free (pending, [i]);
		1012	#if EV_IDLE_ENABLE
		1013	array_free (idle, [i]);
		1014	#endif
		1015	}
805		1016
806	/* have to use the microsoft-never-gets-it-right macro */	1017	/* have to use the microsoft-never-gets-it-right macro */
807	array_free_microshit (fdchange);	1018	array_free (fdchange, EMPTY);
808	array_free_microshit (timer);	1019	array_free (timer, EMPTY);
809	#if EV_PERIODICS	1020	#if EV_PERIODIC_ENABLE
810	array_free_microshit (periodic);	1021	array_free (periodic, EMPTY);
811	#endif	1022	#endif
812	array_free_microshit (idle);	1023	array_free (prepare, EMPTY);
813	array_free_microshit (prepare);	1024	array_free (check, EMPTY);
814	array_free_microshit (check);
815		1025
816	method = 0;	1026	backend = 0;
817	}	1027	}
818		1028
819	static void	1029	void inline_size infy_fork (EV_P);
		1030
		1031	void inline_size
820	loop_fork (EV_P)	1032	loop_fork (EV_P)
821	{	1033	{
		1034	#if EV_USE_PORT
		1035	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1036	#endif
		1037	#if EV_USE_KQUEUE
		1038	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1039	#endif
822	#if EV_USE_EPOLL	1040	#if EV_USE_EPOLL
823	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1041	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
824	#endif	1042	#endif
825	#if EV_USE_KQUEUE	1043	#if EV_USE_INOTIFY
826	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1044	infy_fork (EV_A);
827	#endif	1045	#endif
828		1046
829	if (ev_is_active (&sigev))	1047	if (ev_is_active (&sigev))
830	{	1048	{
831	/* default loop */	1049	/* default loop */
…		…
844	postfork = 0;	1062	postfork = 0;
845	}	1063	}
846		1064
847	#if EV_MULTIPLICITY	1065	#if EV_MULTIPLICITY
848	struct ev_loop *	1066	struct ev_loop *
849	ev_loop_new (int methods)	1067	ev_loop_new (unsigned int flags)
850	{	1068	{
851	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1069	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
852		1070
853	memset (loop, 0, sizeof (struct ev_loop));	1071	memset (loop, 0, sizeof (struct ev_loop));
854		1072
855	loop_init (EV_A_ methods);	1073	loop_init (EV_A_ flags);
856		1074
857	if (ev_method (EV_A))	1075	if (ev_backend (EV_A))
858	return loop;	1076	return loop;
859		1077
860	return 0;	1078	return 0;
861	}	1079	}
862		1080
…		…
875		1093
876	#endif	1094	#endif
877		1095
878	#if EV_MULTIPLICITY	1096	#if EV_MULTIPLICITY
879	struct ev_loop *	1097	struct ev_loop *
		1098	ev_default_loop_init (unsigned int flags)
880	#else	1099	#else
881	int	1100	int
		1101	ev_default_loop (unsigned int flags)
882	#endif	1102	#endif
883	ev_default_loop (int methods)
884	{	1103	{
885	if (sigpipe [0] == sigpipe [1])	1104	if (sigpipe [0] == sigpipe [1])
886	if (pipe (sigpipe))	1105	if (pipe (sigpipe))
887	return 0;	1106	return 0;
888		1107
889	if (!default_loop)	1108	if (!ev_default_loop_ptr)
890	{	1109	{
891	#if EV_MULTIPLICITY	1110	#if EV_MULTIPLICITY
892	struct ev_loop *loop = default_loop = &default_loop_struct;	1111	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
893	#else	1112	#else
894	default_loop = 1;	1113	ev_default_loop_ptr = 1;
895	#endif	1114	#endif
896		1115
897	loop_init (EV_A_ methods);	1116	loop_init (EV_A_ flags);
898		1117
899	if (ev_method (EV_A))	1118	if (ev_backend (EV_A))
900	{	1119	{
901	siginit (EV_A);	1120	siginit (EV_A);
902		1121
903	#ifndef WIN32	1122	#ifndef _WIN32
904	ev_signal_init (&childev, childcb, SIGCHLD);	1123	ev_signal_init (&childev, childcb, SIGCHLD);
905	ev_set_priority (&childev, EV_MAXPRI);	1124	ev_set_priority (&childev, EV_MAXPRI);
906	ev_signal_start (EV_A_ &childev);	1125	ev_signal_start (EV_A_ &childev);
907	ev_unref (EV_A); /* child watcher should not keep loop alive */	1126	ev_unref (EV_A); /* child watcher should not keep loop alive */
908	#endif	1127	#endif
909	}	1128	}
910	else	1129	else
911	default_loop = 0;	1130	ev_default_loop_ptr = 0;
912	}	1131	}
913		1132
914	return default_loop;	1133	return ev_default_loop_ptr;
915	}	1134	}
916		1135
917	void	1136	void
918	ev_default_destroy (void)	1137	ev_default_destroy (void)
919	{	1138	{
920	#if EV_MULTIPLICITY	1139	#if EV_MULTIPLICITY
921	struct ev_loop *loop = default_loop;	1140	struct ev_loop *loop = ev_default_loop_ptr;
922	#endif	1141	#endif
923		1142
924	#ifndef WIN32	1143	#ifndef _WIN32
925	ev_ref (EV_A); /* child watcher */	1144	ev_ref (EV_A); /* child watcher */
926	ev_signal_stop (EV_A_ &childev);	1145	ev_signal_stop (EV_A_ &childev);
927	#endif	1146	#endif
928		1147
929	ev_ref (EV_A); /* signal watcher */	1148	ev_ref (EV_A); /* signal watcher */
…		…
937		1156
938	void	1157	void
939	ev_default_fork (void)	1158	ev_default_fork (void)
940	{	1159	{
941	#if EV_MULTIPLICITY	1160	#if EV_MULTIPLICITY
942	struct ev_loop *loop = default_loop;	1161	struct ev_loop *loop = ev_default_loop_ptr;
943	#endif	1162	#endif
944		1163
945	if (method)	1164	if (backend)
946	postfork = 1;	1165	postfork = 1;
947	}	1166	}
948		1167
949	/*****************************************************************************/	1168	/*****************************************************************************/
950		1169
951	static int	1170	void
952	any_pending (EV_P)	1171	ev_invoke (EV_P_ void *w, int revents)
953	{	1172	{
954	int pri;	1173	EV_CB_INVOKE ((W)w, revents);
955
956	for (pri = NUMPRI; pri--; )
957	if (pendingcnt [pri])
958	return 1;
959
960	return 0;
961	}	1174	}
962		1175
963	static void	1176	void inline_speed
964	call_pending (EV_P)	1177	call_pending (EV_P)
965	{	1178	{
966	int pri;	1179	int pri;
967		1180
968	for (pri = NUMPRI; pri--; )	1181	for (pri = NUMPRI; pri--; )
969	while (pendingcnt [pri])	1182	while (pendingcnt [pri])
970	{	1183	{
971	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1184	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
972		1185
973	if (p->w)	1186	if (expect_true (p->w))
974	{	1187	{
		1188	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1189
975	p->w->pending = 0;	1190	p->w->pending = 0;
976	EV_CB_INVOKE (p->w, p->events);	1191	EV_CB_INVOKE (p->w, p->events);
977	}	1192	}
978	}	1193	}
979	}	1194	}
980		1195
981	static void	1196	void inline_size
982	timers_reify (EV_P)	1197	timers_reify (EV_P)
983	{	1198	{
984	while (timercnt && ((WT)timers [0])->at <= mn_now)	1199	while (timercnt && ((WT)timers [0])->at <= mn_now)
985	{	1200	{
986	struct ev_timer *w = timers [0];	1201	ev_timer *w = timers [0];
987		1202
988	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1203	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
989		1204
990	/* first reschedule or stop timer */	1205	/* first reschedule or stop timer */
991	if (w->repeat)	1206	if (w->repeat)
992	{	1207	{
993	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1208	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
…		…
1003		1218
1004	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1219	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1005	}	1220	}
1006	}	1221	}
1007		1222
1008	#if EV_PERIODICS	1223	#if EV_PERIODIC_ENABLE
1009	static void	1224	void inline_size
1010	periodics_reify (EV_P)	1225	periodics_reify (EV_P)
1011	{	1226	{
1012	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1227	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1013	{	1228	{
1014	struct ev_periodic *w = periodics [0];	1229	ev_periodic *w = periodics [0];
1015		1230
1016	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1231	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1017		1232
1018	/* first reschedule or stop timer */	1233	/* first reschedule or stop timer */
1019	if (w->reschedule_cb)	1234	if (w->reschedule_cb)
1020	{	1235	{
1021	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1236	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1022
1023	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1237	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1024	downheap ((WT *)periodics, periodiccnt, 0);	1238	downheap ((WT *)periodics, periodiccnt, 0);
1025	}	1239	}
1026	else if (w->interval)	1240	else if (w->interval)
1027	{	1241	{
…		…
1034		1248
1035	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1249	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1036	}	1250	}
1037	}	1251	}
1038		1252
1039	static void	1253	static void noinline
1040	periodics_reschedule (EV_P)	1254	periodics_reschedule (EV_P)
1041	{	1255	{
1042	int i;	1256	int i;
1043		1257
1044	/* adjust periodics after time jump */	1258	/* adjust periodics after time jump */
1045	for (i = 0; i < periodiccnt; ++i)	1259	for (i = 0; i < periodiccnt; ++i)
1046	{	1260	{
1047	struct ev_periodic *w = periodics [i];	1261	ev_periodic *w = periodics [i];
1048		1262
1049	if (w->reschedule_cb)	1263	if (w->reschedule_cb)
1050	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1264	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1051	else if (w->interval)	1265	else if (w->interval)
1052	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1266	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
…		…
1056	for (i = periodiccnt >> 1; i--; )	1270	for (i = periodiccnt >> 1; i--; )
1057	downheap ((WT *)periodics, periodiccnt, i);	1271	downheap ((WT *)periodics, periodiccnt, i);
1058	}	1272	}
1059	#endif	1273	#endif
1060		1274
1061	inline int	1275	#if EV_IDLE_ENABLE
		1276	void inline_size
		1277	idle_reify (EV_P)
		1278	{
		1279	if (expect_false (idleall))
		1280	{
		1281	int pri;
		1282
		1283	for (pri = NUMPRI; pri--; )
		1284	{
		1285	if (pendingcnt [pri])
		1286	break;
		1287
		1288	if (idlecnt [pri])
		1289	{
		1290	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1291	break;
		1292	}
		1293	}
		1294	}
		1295	}
		1296	#endif
		1297
		1298	int inline_size
1062	time_update_monotonic (EV_P)	1299	time_update_monotonic (EV_P)
1063	{	1300	{
1064	mn_now = get_clock ();	1301	mn_now = get_clock ();
1065		1302
1066	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1303	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
…		…
1074	ev_rt_now = ev_time ();	1311	ev_rt_now = ev_time ();
1075	return 1;	1312	return 1;
1076	}	1313	}
1077	}	1314	}
1078		1315
1079	static void	1316	void inline_size
1080	time_update (EV_P)	1317	time_update (EV_P)
1081	{	1318	{
1082	int i;	1319	int i;
1083		1320
1084	#if EV_USE_MONOTONIC	1321	#if EV_USE_MONOTONIC
…		…
1086	{	1323	{
1087	if (time_update_monotonic (EV_A))	1324	if (time_update_monotonic (EV_A))
1088	{	1325	{
1089	ev_tstamp odiff = rtmn_diff;	1326	ev_tstamp odiff = rtmn_diff;
1090		1327
1091	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1328	/* loop a few times, before making important decisions.
		1329	* on the choice of "4": one iteration isn't enough,
		1330	* in case we get preempted during the calls to
		1331	* ev_time and get_clock. a second call is almost guaranteed
		1332	* to succeed in that case, though. and looping a few more times
		1333	* doesn't hurt either as we only do this on time-jumps or
		1334	* in the unlikely event of having been preempted here.
		1335	*/
		1336	for (i = 4; --i; )
1092	{	1337	{
1093	rtmn_diff = ev_rt_now - mn_now;	1338	rtmn_diff = ev_rt_now - mn_now;
1094		1339
1095	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1340	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1096	return; /* all is well */	1341	return; /* all is well */
…		…
1098	ev_rt_now = ev_time ();	1343	ev_rt_now = ev_time ();
1099	mn_now = get_clock ();	1344	mn_now = get_clock ();
1100	now_floor = mn_now;	1345	now_floor = mn_now;
1101	}	1346	}
1102		1347
1103	# if EV_PERIODICS	1348	# if EV_PERIODIC_ENABLE
1104	periodics_reschedule (EV_A);	1349	periodics_reschedule (EV_A);
1105	# endif	1350	# endif
1106	/* no timer adjustment, as the monotonic clock doesn't jump */	1351	/* no timer adjustment, as the monotonic clock doesn't jump */
1107	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1352	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1108	}	1353	}
…		…
1112	{	1357	{
1113	ev_rt_now = ev_time ();	1358	ev_rt_now = ev_time ();
1114		1359
1115	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1360	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1116	{	1361	{
1117	#if EV_PERIODICS	1362	#if EV_PERIODIC_ENABLE
1118	periodics_reschedule (EV_A);	1363	periodics_reschedule (EV_A);
1119	#endif	1364	#endif
1120		1365
1121	/* adjust timers. this is easy, as the offset is the same for all */	1366	/* adjust timers. this is easy, as the offset is the same for all of them */
1122	for (i = 0; i < timercnt; ++i)	1367	for (i = 0; i < timercnt; ++i)
1123	((WT)timers [i])->at += ev_rt_now - mn_now;	1368	((WT)timers [i])->at += ev_rt_now - mn_now;
1124	}	1369	}
1125		1370
1126	mn_now = ev_rt_now;	1371	mn_now = ev_rt_now;
…		…
1142	static int loop_done;	1387	static int loop_done;
1143		1388
1144	void	1389	void
1145	ev_loop (EV_P_ int flags)	1390	ev_loop (EV_P_ int flags)
1146	{	1391	{
1147	double block;
1148	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1392	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1393	? EVUNLOOP_ONE
		1394	: EVUNLOOP_CANCEL;
		1395
		1396	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1149		1397
1150	do	1398	do
1151	{	1399	{
		1400	#ifndef _WIN32
		1401	if (expect_false (curpid)) /* penalise the forking check even more */
		1402	if (expect_false (getpid () != curpid))
		1403	{
		1404	curpid = getpid ();
		1405	postfork = 1;
		1406	}
		1407	#endif
		1408
		1409	#if EV_FORK_ENABLE
		1410	/* we might have forked, so queue fork handlers */
		1411	if (expect_false (postfork))
		1412	if (forkcnt)
		1413	{
		1414	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1415	call_pending (EV_A);
		1416	}
		1417	#endif
		1418
1152	/* queue check watchers (and execute them) */	1419	/* queue prepare watchers (and execute them) */
1153	if (expect_false (preparecnt))	1420	if (expect_false (preparecnt))
1154	{	1421	{
1155	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1422	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1156	call_pending (EV_A);	1423	call_pending (EV_A);
1157	}	1424	}
1158		1425
		1426	if (expect_false (!activecnt))
		1427	break;
		1428
1159	/* we might have forked, so reify kernel state if necessary */	1429	/* we might have forked, so reify kernel state if necessary */
1160	if (expect_false (postfork))	1430	if (expect_false (postfork))
1161	loop_fork (EV_A);	1431	loop_fork (EV_A);
1162		1432
1163	/* update fd-related kernel structures */	1433	/* update fd-related kernel structures */
1164	fd_reify (EV_A);	1434	fd_reify (EV_A);
1165		1435
1166	/* calculate blocking time */	1436	/* calculate blocking time */
		1437	{
		1438	ev_tstamp block;
1167		1439
1168	/* we only need this for !monotonic clock or timers, but as we basically	1440	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1169	always have timers, we just calculate it always */	1441	block = 0.; /* do not block at all */
		1442	else
		1443	{
		1444	/* update time to cancel out callback processing overhead */
1170	#if EV_USE_MONOTONIC	1445	#if EV_USE_MONOTONIC
1171	if (expect_true (have_monotonic))	1446	if (expect_true (have_monotonic))
1172	time_update_monotonic (EV_A);	1447	time_update_monotonic (EV_A);
1173	else	1448	else
1174	#endif	1449	#endif
1175	{	1450	{
1176	ev_rt_now = ev_time ();	1451	ev_rt_now = ev_time ();
1177	mn_now = ev_rt_now;	1452	mn_now = ev_rt_now;
1178	}	1453	}
1179		1454
1180	if (flags & EVLOOP_NONBLOCK || idlecnt)
1181	block = 0.;
1182	else
1183	{
1184	block = MAX_BLOCKTIME;	1455	block = MAX_BLOCKTIME;
1185		1456
1186	if (timercnt)	1457	if (timercnt)
1187	{	1458	{
1188	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1459	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1189	if (block > to) block = to;	1460	if (block > to) block = to;
1190	}	1461	}
1191		1462
1192	#if EV_PERIODICS	1463	#if EV_PERIODIC_ENABLE
1193	if (periodiccnt)	1464	if (periodiccnt)
1194	{	1465	{
1195	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1466	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1196	if (block > to) block = to;	1467	if (block > to) block = to;
1197	}	1468	}
1198	#endif	1469	#endif
1199		1470
1200	if (block < 0.) block = 0.;	1471	if (expect_false (block < 0.)) block = 0.;
1201	}	1472	}
1202		1473
		1474	++loop_count;
1203	method_poll (EV_A_ block);	1475	backend_poll (EV_A_ block);
		1476	}
1204		1477
1205	/* update ev_rt_now, do magic */	1478	/* update ev_rt_now, do magic */
1206	time_update (EV_A);	1479	time_update (EV_A);
1207		1480
1208	/* queue pending timers and reschedule them */	1481	/* queue pending timers and reschedule them */
1209	timers_reify (EV_A); /* relative timers called last */	1482	timers_reify (EV_A); /* relative timers called last */
1210	#if EV_PERIODICS	1483	#if EV_PERIODIC_ENABLE
1211	periodics_reify (EV_A); /* absolute timers called first */	1484	periodics_reify (EV_A); /* absolute timers called first */
1212	#endif	1485	#endif
1213		1486
		1487	#if EV_IDLE_ENABLE
1214	/* queue idle watchers unless io or timers are pending */	1488	/* queue idle watchers unless other events are pending */
1215	if (idlecnt && !any_pending (EV_A))	1489	idle_reify (EV_A);
1216	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1490	#endif
1217		1491
1218	/* queue check watchers, to be executed first */	1492	/* queue check watchers, to be executed first */
1219	if (checkcnt)	1493	if (expect_false (checkcnt))
1220	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1494	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1221		1495
1222	call_pending (EV_A);	1496	call_pending (EV_A);
		1497
1223	}	1498	}
1224	while (activecnt && !loop_done);	1499	while (expect_true (activecnt && !loop_done));
1225		1500
1226	if (loop_done != 2)	1501	if (loop_done == EVUNLOOP_ONE)
1227	loop_done = 0;	1502	loop_done = EVUNLOOP_CANCEL;
1228	}	1503	}
1229		1504
1230	void	1505	void
1231	ev_unloop (EV_P_ int how)	1506	ev_unloop (EV_P_ int how)
1232	{	1507	{
1233	loop_done = how;	1508	loop_done = how;
1234	}	1509	}
1235		1510
1236	/*****************************************************************************/	1511	/*****************************************************************************/
1237		1512
1238	inline void	1513	void inline_size
1239	wlist_add (WL *head, WL elem)	1514	wlist_add (WL *head, WL elem)
1240	{	1515	{
1241	elem->next = *head;	1516	elem->next = *head;
1242	*head = elem;	1517	*head = elem;
1243	}	1518	}
1244		1519
1245	inline void	1520	void inline_size
1246	wlist_del (WL *head, WL elem)	1521	wlist_del (WL *head, WL elem)
1247	{	1522	{
1248	while (*head)	1523	while (*head)
1249	{	1524	{
1250	if (*head == elem)	1525	if (*head == elem)
…		…
1255		1530
1256	head = &(*head)->next;	1531	head = &(*head)->next;
1257	}	1532	}
1258	}	1533	}
1259		1534
1260	inline void	1535	void inline_speed
1261	ev_clear_pending (EV_P_ W w)	1536	clear_pending (EV_P_ W w)
1262	{	1537	{
1263	if (w->pending)	1538	if (w->pending)
1264	{	1539	{
1265	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1540	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1266	w->pending = 0;	1541	w->pending = 0;
1267	}	1542	}
1268	}	1543	}
1269		1544
1270	inline void	1545	int
		1546	ev_clear_pending (EV_P_ void *w)
		1547	{
		1548	W w_ = (W)w;
		1549	int pending = w_->pending;
		1550
		1551	if (!pending)
		1552	return 0;
		1553
		1554	w_->pending = 0;
		1555	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1556	p->w = 0;
		1557
		1558	return p->events;
		1559	}
		1560
		1561	void inline_size
		1562	pri_adjust (EV_P_ W w)
		1563	{
		1564	int pri = w->priority;
		1565	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1566	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1567	w->priority = pri;
		1568	}
		1569
		1570	void inline_speed
1271	ev_start (EV_P_ W w, int active)	1571	ev_start (EV_P_ W w, int active)
1272	{	1572	{
1273	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1573	pri_adjust (EV_A_ w);
1274	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1275
1276	w->active = active;	1574	w->active = active;
1277	ev_ref (EV_A);	1575	ev_ref (EV_A);
1278	}	1576	}
1279		1577
1280	inline void	1578	void inline_size
1281	ev_stop (EV_P_ W w)	1579	ev_stop (EV_P_ W w)
1282	{	1580	{
1283	ev_unref (EV_A);	1581	ev_unref (EV_A);
1284	w->active = 0;	1582	w->active = 0;
1285	}	1583	}
1286		1584
1287	/*****************************************************************************/	1585	/*****************************************************************************/
1288		1586
1289	void	1587	void noinline
1290	ev_io_start (EV_P_ struct ev_io *w)	1588	ev_io_start (EV_P_ ev_io *w)
1291	{	1589	{
1292	int fd = w->fd;	1590	int fd = w->fd;
1293		1591
1294	if (ev_is_active (w))	1592	if (expect_false (ev_is_active (w)))
1295	return;	1593	return;
1296		1594
1297	assert (("ev_io_start called with negative fd", fd >= 0));	1595	assert (("ev_io_start called with negative fd", fd >= 0));
1298		1596
1299	ev_start (EV_A_ (W)w, 1);	1597	ev_start (EV_A_ (W)w, 1);
…		…
1301	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1599	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1302		1600
1303	fd_change (EV_A_ fd);	1601	fd_change (EV_A_ fd);
1304	}	1602	}
1305		1603
1306	void	1604	void noinline
1307	ev_io_stop (EV_P_ struct ev_io *w)	1605	ev_io_stop (EV_P_ ev_io *w)
1308	{	1606	{
1309	ev_clear_pending (EV_A_ (W)w);	1607	clear_pending (EV_A_ (W)w);
1310	if (!ev_is_active (w))	1608	if (expect_false (!ev_is_active (w)))
1311	return;	1609	return;
1312		1610
1313	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1611	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1314		1612
1315	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1613	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1316	ev_stop (EV_A_ (W)w);	1614	ev_stop (EV_A_ (W)w);
1317		1615
1318	fd_change (EV_A_ w->fd);	1616	fd_change (EV_A_ w->fd);
1319	}	1617	}
1320		1618
1321	void	1619	void noinline
1322	ev_timer_start (EV_P_ struct ev_timer *w)	1620	ev_timer_start (EV_P_ ev_timer *w)
1323	{	1621	{
1324	if (ev_is_active (w))	1622	if (expect_false (ev_is_active (w)))
1325	return;	1623	return;
1326		1624
1327	((WT)w)->at += mn_now;	1625	((WT)w)->at += mn_now;
1328		1626
1329	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1627	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1330		1628
1331	ev_start (EV_A_ (W)w, ++timercnt);	1629	ev_start (EV_A_ (W)w, ++timercnt);
1332	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1630	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1333	timers [timercnt - 1] = w;	1631	timers [timercnt - 1] = w;
1334	upheap ((WT *)timers, timercnt - 1);	1632	upheap ((WT *)timers, timercnt - 1);
1335		1633
		1634	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1635	}
		1636
		1637	void noinline
		1638	ev_timer_stop (EV_P_ ev_timer *w)
		1639	{
		1640	clear_pending (EV_A_ (W)w);
		1641	if (expect_false (!ev_is_active (w)))
		1642	return;
		1643
1336	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1644	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1337	}
1338		1645
1339	void	1646	{
1340	ev_timer_stop (EV_P_ struct ev_timer *w)	1647	int active = ((W)w)->active;
1341	{
1342	ev_clear_pending (EV_A_ (W)w);
1343	if (!ev_is_active (w))
1344	return;
1345		1648
1346	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1649	if (expect_true (--active < --timercnt))
1347
1348	if (((W)w)->active < timercnt--)
1349	{	1650	{
1350	timers [((W)w)->active - 1] = timers [timercnt];	1651	timers [active] = timers [timercnt];
1351	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1652	adjustheap ((WT *)timers, timercnt, active);
1352	}	1653	}
		1654	}
1353		1655
1354	((WT)w)->at -= mn_now;	1656	((WT)w)->at -= mn_now;
1355		1657
1356	ev_stop (EV_A_ (W)w);	1658	ev_stop (EV_A_ (W)w);
1357	}	1659	}
1358		1660
1359	void	1661	void noinline
1360	ev_timer_again (EV_P_ struct ev_timer *w)	1662	ev_timer_again (EV_P_ ev_timer *w)
1361	{	1663	{
1362	if (ev_is_active (w))	1664	if (ev_is_active (w))
1363	{	1665	{
1364	if (w->repeat)	1666	if (w->repeat)
		1667	{
		1668	((WT)w)->at = mn_now + w->repeat;
1365	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1669	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
		1670	}
1366	else	1671	else
1367	ev_timer_stop (EV_A_ w);	1672	ev_timer_stop (EV_A_ w);
1368	}	1673	}
1369	else if (w->repeat)	1674	else if (w->repeat)
		1675	{
		1676	w->at = w->repeat;
1370	ev_timer_start (EV_A_ w);	1677	ev_timer_start (EV_A_ w);
		1678	}
1371	}	1679	}
1372		1680
1373	#if EV_PERIODICS	1681	#if EV_PERIODIC_ENABLE
1374	void	1682	void noinline
1375	ev_periodic_start (EV_P_ struct ev_periodic *w)	1683	ev_periodic_start (EV_P_ ev_periodic *w)
1376	{	1684	{
1377	if (ev_is_active (w))	1685	if (expect_false (ev_is_active (w)))
1378	return;	1686	return;
1379		1687
1380	if (w->reschedule_cb)	1688	if (w->reschedule_cb)
1381	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1689	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1382	else if (w->interval)	1690	else if (w->interval)
…		…
1385	/* this formula differs from the one in periodic_reify because we do not always round up */	1693	/* this formula differs from the one in periodic_reify because we do not always round up */
1386	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1694	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1387	}	1695	}
1388		1696
1389	ev_start (EV_A_ (W)w, ++periodiccnt);	1697	ev_start (EV_A_ (W)w, ++periodiccnt);
1390	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1698	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1391	periodics [periodiccnt - 1] = w;	1699	periodics [periodiccnt - 1] = w;
1392	upheap ((WT *)periodics, periodiccnt - 1);	1700	upheap ((WT *)periodics, periodiccnt - 1);
1393		1701
		1702	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1703	}
		1704
		1705	void noinline
		1706	ev_periodic_stop (EV_P_ ev_periodic *w)
		1707	{
		1708	clear_pending (EV_A_ (W)w);
		1709	if (expect_false (!ev_is_active (w)))
		1710	return;
		1711
1394	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1712	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1395	}
1396		1713
1397	void	1714	{
1398	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1715	int active = ((W)w)->active;
1399	{
1400	ev_clear_pending (EV_A_ (W)w);
1401	if (!ev_is_active (w))
1402	return;
1403		1716
1404	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1717	if (expect_true (--active < --periodiccnt))
1405
1406	if (((W)w)->active < periodiccnt--)
1407	{	1718	{
1408	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1719	periodics [active] = periodics [periodiccnt];
1409	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1720	adjustheap ((WT *)periodics, periodiccnt, active);
1410	}	1721	}
		1722	}
1411		1723
1412	ev_stop (EV_A_ (W)w);	1724	ev_stop (EV_A_ (W)w);
1413	}	1725	}
1414		1726
1415	void	1727	void noinline
1416	ev_periodic_again (EV_P_ struct ev_periodic *w)	1728	ev_periodic_again (EV_P_ ev_periodic *w)
1417	{	1729	{
1418	/* TODO: use adjustheap and recalculation */	1730	/* TODO: use adjustheap and recalculation */
1419	ev_periodic_stop (EV_A_ w);	1731	ev_periodic_stop (EV_A_ w);
1420	ev_periodic_start (EV_A_ w);	1732	ev_periodic_start (EV_A_ w);
1421	}	1733	}
1422	#endif	1734	#endif
1423		1735
1424	void
1425	ev_idle_start (EV_P_ struct ev_idle *w)
1426	{
1427	if (ev_is_active (w))
1428	return;
1429
1430	ev_start (EV_A_ (W)w, ++idlecnt);
1431	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1432	idles [idlecnt - 1] = w;
1433	}
1434
1435	void
1436	ev_idle_stop (EV_P_ struct ev_idle *w)
1437	{
1438	ev_clear_pending (EV_A_ (W)w);
1439	if (ev_is_active (w))
1440	return;
1441
1442	idles [((W)w)->active - 1] = idles [--idlecnt];
1443	ev_stop (EV_A_ (W)w);
1444	}
1445
1446	void
1447	ev_prepare_start (EV_P_ struct ev_prepare *w)
1448	{
1449	if (ev_is_active (w))
1450	return;
1451
1452	ev_start (EV_A_ (W)w, ++preparecnt);
1453	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1454	prepares [preparecnt - 1] = w;
1455	}
1456
1457	void
1458	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1459	{
1460	ev_clear_pending (EV_A_ (W)w);
1461	if (ev_is_active (w))
1462	return;
1463
1464	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1465	ev_stop (EV_A_ (W)w);
1466	}
1467
1468	void
1469	ev_check_start (EV_P_ struct ev_check *w)
1470	{
1471	if (ev_is_active (w))
1472	return;
1473
1474	ev_start (EV_A_ (W)w, ++checkcnt);
1475	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1476	checks [checkcnt - 1] = w;
1477	}
1478
1479	void
1480	ev_check_stop (EV_P_ struct ev_check *w)
1481	{
1482	ev_clear_pending (EV_A_ (W)w);
1483	if (ev_is_active (w))
1484	return;
1485
1486	checks [((W)w)->active - 1] = checks [--checkcnt];
1487	ev_stop (EV_A_ (W)w);
1488	}
1489
1490	#ifndef SA_RESTART	1736	#ifndef SA_RESTART
1491	# define SA_RESTART 0	1737	# define SA_RESTART 0
1492	#endif	1738	#endif
1493		1739
1494	void	1740	void noinline
1495	ev_signal_start (EV_P_ struct ev_signal *w)	1741	ev_signal_start (EV_P_ ev_signal *w)
1496	{	1742	{
1497	#if EV_MULTIPLICITY	1743	#if EV_MULTIPLICITY
1498	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1744	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1499	#endif	1745	#endif
1500	if (ev_is_active (w))	1746	if (expect_false (ev_is_active (w)))
1501	return;	1747	return;
1502		1748
1503	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1749	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1504		1750
1505	ev_start (EV_A_ (W)w, 1);	1751	ev_start (EV_A_ (W)w, 1);
1506	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1752	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1507	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1753	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1508		1754
1509	if (!((WL)w)->next)	1755	if (!((WL)w)->next)
1510	{	1756	{
1511	#if WIN32	1757	#if _WIN32
1512	signal (w->signum, sighandler);	1758	signal (w->signum, sighandler);
1513	#else	1759	#else
1514	struct sigaction sa;	1760	struct sigaction sa;
1515	sa.sa_handler = sighandler;	1761	sa.sa_handler = sighandler;
1516	sigfillset (&sa.sa_mask);	1762	sigfillset (&sa.sa_mask);
…		…
1518	sigaction (w->signum, &sa, 0);	1764	sigaction (w->signum, &sa, 0);
1519	#endif	1765	#endif
1520	}	1766	}
1521	}	1767	}
1522		1768
1523	void	1769	void noinline
1524	ev_signal_stop (EV_P_ struct ev_signal *w)	1770	ev_signal_stop (EV_P_ ev_signal *w)
1525	{	1771	{
1526	ev_clear_pending (EV_A_ (W)w);	1772	clear_pending (EV_A_ (W)w);
1527	if (!ev_is_active (w))	1773	if (expect_false (!ev_is_active (w)))
1528	return;	1774	return;
1529		1775
1530	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1776	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1531	ev_stop (EV_A_ (W)w);	1777	ev_stop (EV_A_ (W)w);
1532		1778
1533	if (!signals [w->signum - 1].head)	1779	if (!signals [w->signum - 1].head)
1534	signal (w->signum, SIG_DFL);	1780	signal (w->signum, SIG_DFL);
1535	}	1781	}
1536		1782
1537	void	1783	void
1538	ev_child_start (EV_P_ struct ev_child *w)	1784	ev_child_start (EV_P_ ev_child *w)
1539	{	1785	{
1540	#if EV_MULTIPLICITY	1786	#if EV_MULTIPLICITY
1541	assert (("child watchers are only supported in the default loop", loop == default_loop));	1787	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1542	#endif	1788	#endif
1543	if (ev_is_active (w))	1789	if (expect_false (ev_is_active (w)))
1544	return;	1790	return;
1545		1791
1546	ev_start (EV_A_ (W)w, 1);	1792	ev_start (EV_A_ (W)w, 1);
1547	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1793	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1548	}	1794	}
1549		1795
1550	void	1796	void
1551	ev_child_stop (EV_P_ struct ev_child *w)	1797	ev_child_stop (EV_P_ ev_child *w)
1552	{	1798	{
1553	ev_clear_pending (EV_A_ (W)w);	1799	clear_pending (EV_A_ (W)w);
1554	if (ev_is_active (w))	1800	if (expect_false (!ev_is_active (w)))
1555	return;	1801	return;
1556		1802
1557	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1803	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1558	ev_stop (EV_A_ (W)w);	1804	ev_stop (EV_A_ (W)w);
1559	}	1805	}
1560		1806
		1807	#if EV_STAT_ENABLE
		1808
		1809	# ifdef _WIN32
		1810	# undef lstat
		1811	# define lstat(a,b) _stati64 (a,b)
		1812	# endif
		1813
		1814	#define DEF_STAT_INTERVAL 5.0074891
		1815	#define MIN_STAT_INTERVAL 0.1074891
		1816
		1817	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1818
		1819	#if EV_USE_INOTIFY
		1820	# define EV_INOTIFY_BUFSIZE 8192
		1821
		1822	static void noinline
		1823	infy_add (EV_P_ ev_stat *w)
		1824	{
		1825	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
		1826
		1827	if (w->wd < 0)
		1828	{
		1829	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1830
		1831	/* monitor some parent directory for speedup hints */
		1832	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1833	{
		1834	char path [4096];
		1835	strcpy (path, w->path);
		1836
		1837	do
		1838	{
		1839	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1840	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1841
		1842	char *pend = strrchr (path, '/');
		1843
		1844	if (!pend)
		1845	break; /* whoops, no '/', complain to your admin */
		1846
		1847	*pend = 0;
		1848	w->wd = inotify_add_watch (fs_fd, path, mask);
		1849	}
		1850	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1851	}
		1852	}
		1853	else
		1854	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1855
		1856	if (w->wd >= 0)
		1857	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1858	}
		1859
		1860	static void noinline
		1861	infy_del (EV_P_ ev_stat *w)
		1862	{
		1863	int slot;
		1864	int wd = w->wd;
		1865
		1866	if (wd < 0)
		1867	return;
		1868
		1869	w->wd = -2;
		1870	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1871	wlist_del (&fs_hash [slot].head, (WL)w);
		1872
		1873	/* remove this watcher, if others are watching it, they will rearm */
		1874	inotify_rm_watch (fs_fd, wd);
		1875	}
		1876
		1877	static void noinline
		1878	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1879	{
		1880	if (slot < 0)
		1881	/* overflow, need to check for all hahs slots */
		1882	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1883	infy_wd (EV_A_ slot, wd, ev);
		1884	else
		1885	{
		1886	WL w_;
		1887
		1888	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1889	{
		1890	ev_stat *w = (ev_stat *)w_;
		1891	w_ = w_->next; /* lets us remove this watcher and all before it */
		1892
		1893	if (w->wd == wd || wd == -1)
		1894	{
		1895	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1896	{
		1897	w->wd = -1;
		1898	infy_add (EV_A_ w); /* re-add, no matter what */
		1899	}
		1900
		1901	stat_timer_cb (EV_A_ &w->timer, 0);
		1902	}
		1903	}
		1904	}
		1905	}
		1906
		1907	static void
		1908	infy_cb (EV_P_ ev_io *w, int revents)
		1909	{
		1910	char buf [EV_INOTIFY_BUFSIZE];
		1911	struct inotify_event *ev = (struct inotify_event *)buf;
		1912	int ofs;
		1913	int len = read (fs_fd, buf, sizeof (buf));
		1914
		1915	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1916	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1917	}
		1918
		1919	void inline_size
		1920	infy_init (EV_P)
		1921	{
		1922	if (fs_fd != -2)
		1923	return;
		1924
		1925	fs_fd = inotify_init ();
		1926
		1927	if (fs_fd >= 0)
		1928	{
		1929	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1930	ev_set_priority (&fs_w, EV_MAXPRI);
		1931	ev_io_start (EV_A_ &fs_w);
		1932	}
		1933	}
		1934
		1935	void inline_size
		1936	infy_fork (EV_P)
		1937	{
		1938	int slot;
		1939
		1940	if (fs_fd < 0)
		1941	return;
		1942
		1943	close (fs_fd);
		1944	fs_fd = inotify_init ();
		1945
		1946	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1947	{
		1948	WL w_ = fs_hash [slot].head;
		1949	fs_hash [slot].head = 0;
		1950
		1951	while (w_)
		1952	{
		1953	ev_stat *w = (ev_stat *)w_;
		1954	w_ = w_->next; /* lets us add this watcher */
		1955
		1956	w->wd = -1;
		1957
		1958	if (fs_fd >= 0)
		1959	infy_add (EV_A_ w); /* re-add, no matter what */
		1960	else
		1961	ev_timer_start (EV_A_ &w->timer);
		1962	}
		1963
		1964	}
		1965	}
		1966
		1967	#endif
		1968
		1969	void
		1970	ev_stat_stat (EV_P_ ev_stat *w)
		1971	{
		1972	if (lstat (w->path, &w->attr) < 0)
		1973	w->attr.st_nlink = 0;
		1974	else if (!w->attr.st_nlink)
		1975	w->attr.st_nlink = 1;
		1976	}
		1977
		1978	static void noinline
		1979	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1980	{
		1981	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1982
		1983	/* we copy this here each the time so that */
		1984	/* prev has the old value when the callback gets invoked */
		1985	w->prev = w->attr;
		1986	ev_stat_stat (EV_A_ w);
		1987
		1988	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1989	if (
		1990	w->prev.st_dev != w->attr.st_dev
		1991	|| w->prev.st_ino != w->attr.st_ino
		1992	|| w->prev.st_mode != w->attr.st_mode
		1993	|| w->prev.st_nlink != w->attr.st_nlink
		1994	|| w->prev.st_uid != w->attr.st_uid
		1995	|| w->prev.st_gid != w->attr.st_gid
		1996	|| w->prev.st_rdev != w->attr.st_rdev
		1997	|| w->prev.st_size != w->attr.st_size
		1998	|| w->prev.st_atime != w->attr.st_atime
		1999	|| w->prev.st_mtime != w->attr.st_mtime
		2000	|| w->prev.st_ctime != w->attr.st_ctime
		2001	) {
		2002	#if EV_USE_INOTIFY
		2003	infy_del (EV_A_ w);
		2004	infy_add (EV_A_ w);
		2005	ev_stat_stat (EV_A_ w); /* avoid race... */
		2006	#endif
		2007
		2008	ev_feed_event (EV_A_ w, EV_STAT);
		2009	}
		2010	}
		2011
		2012	void
		2013	ev_stat_start (EV_P_ ev_stat *w)
		2014	{
		2015	if (expect_false (ev_is_active (w)))
		2016	return;
		2017
		2018	/* since we use memcmp, we need to clear any padding data etc. */
		2019	memset (&w->prev, 0, sizeof (ev_statdata));
		2020	memset (&w->attr, 0, sizeof (ev_statdata));
		2021
		2022	ev_stat_stat (EV_A_ w);
		2023
		2024	if (w->interval < MIN_STAT_INTERVAL)
		2025	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2026
		2027	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2028	ev_set_priority (&w->timer, ev_priority (w));
		2029
		2030	#if EV_USE_INOTIFY
		2031	infy_init (EV_A);
		2032
		2033	if (fs_fd >= 0)
		2034	infy_add (EV_A_ w);
		2035	else
		2036	#endif
		2037	ev_timer_start (EV_A_ &w->timer);
		2038
		2039	ev_start (EV_A_ (W)w, 1);
		2040	}
		2041
		2042	void
		2043	ev_stat_stop (EV_P_ ev_stat *w)
		2044	{
		2045	clear_pending (EV_A_ (W)w);
		2046	if (expect_false (!ev_is_active (w)))
		2047	return;
		2048
		2049	#if EV_USE_INOTIFY
		2050	infy_del (EV_A_ w);
		2051	#endif
		2052	ev_timer_stop (EV_A_ &w->timer);
		2053
		2054	ev_stop (EV_A_ (W)w);
		2055	}
		2056	#endif
		2057
		2058	#if EV_IDLE_ENABLE
		2059	void
		2060	ev_idle_start (EV_P_ ev_idle *w)
		2061	{
		2062	if (expect_false (ev_is_active (w)))
		2063	return;
		2064
		2065	pri_adjust (EV_A_ (W)w);
		2066
		2067	{
		2068	int active = ++idlecnt [ABSPRI (w)];
		2069
		2070	++idleall;
		2071	ev_start (EV_A_ (W)w, active);
		2072
		2073	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2074	idles [ABSPRI (w)][active - 1] = w;
		2075	}
		2076	}
		2077
		2078	void
		2079	ev_idle_stop (EV_P_ ev_idle *w)
		2080	{
		2081	clear_pending (EV_A_ (W)w);
		2082	if (expect_false (!ev_is_active (w)))
		2083	return;
		2084
		2085	{
		2086	int active = ((W)w)->active;
		2087
		2088	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2089	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2090
		2091	ev_stop (EV_A_ (W)w);
		2092	--idleall;
		2093	}
		2094	}
		2095	#endif
		2096
		2097	void
		2098	ev_prepare_start (EV_P_ ev_prepare *w)
		2099	{
		2100	if (expect_false (ev_is_active (w)))
		2101	return;
		2102
		2103	ev_start (EV_A_ (W)w, ++preparecnt);
		2104	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2105	prepares [preparecnt - 1] = w;
		2106	}
		2107
		2108	void
		2109	ev_prepare_stop (EV_P_ ev_prepare *w)
		2110	{
		2111	clear_pending (EV_A_ (W)w);
		2112	if (expect_false (!ev_is_active (w)))
		2113	return;
		2114
		2115	{
		2116	int active = ((W)w)->active;
		2117	prepares [active - 1] = prepares [--preparecnt];
		2118	((W)prepares [active - 1])->active = active;
		2119	}
		2120
		2121	ev_stop (EV_A_ (W)w);
		2122	}
		2123
		2124	void
		2125	ev_check_start (EV_P_ ev_check *w)
		2126	{
		2127	if (expect_false (ev_is_active (w)))
		2128	return;
		2129
		2130	ev_start (EV_A_ (W)w, ++checkcnt);
		2131	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2132	checks [checkcnt - 1] = w;
		2133	}
		2134
		2135	void
		2136	ev_check_stop (EV_P_ ev_check *w)
		2137	{
		2138	clear_pending (EV_A_ (W)w);
		2139	if (expect_false (!ev_is_active (w)))
		2140	return;
		2141
		2142	{
		2143	int active = ((W)w)->active;
		2144	checks [active - 1] = checks [--checkcnt];
		2145	((W)checks [active - 1])->active = active;
		2146	}
		2147
		2148	ev_stop (EV_A_ (W)w);
		2149	}
		2150
		2151	#if EV_EMBED_ENABLE
		2152	void noinline
		2153	ev_embed_sweep (EV_P_ ev_embed *w)
		2154	{
		2155	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2156	}
		2157
		2158	static void
		2159	embed_cb (EV_P_ ev_io *io, int revents)
		2160	{
		2161	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2162
		2163	if (ev_cb (w))
		2164	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2165	else
		2166	ev_embed_sweep (loop, w);
		2167	}
		2168
		2169	void
		2170	ev_embed_start (EV_P_ ev_embed *w)
		2171	{
		2172	if (expect_false (ev_is_active (w)))
		2173	return;
		2174
		2175	{
		2176	struct ev_loop *loop = w->loop;
		2177	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2178	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2179	}
		2180
		2181	ev_set_priority (&w->io, ev_priority (w));
		2182	ev_io_start (EV_A_ &w->io);
		2183
		2184	ev_start (EV_A_ (W)w, 1);
		2185	}
		2186
		2187	void
		2188	ev_embed_stop (EV_P_ ev_embed *w)
		2189	{
		2190	clear_pending (EV_A_ (W)w);
		2191	if (expect_false (!ev_is_active (w)))
		2192	return;
		2193
		2194	ev_io_stop (EV_A_ &w->io);
		2195
		2196	ev_stop (EV_A_ (W)w);
		2197	}
		2198	#endif
		2199
		2200	#if EV_FORK_ENABLE
		2201	void
		2202	ev_fork_start (EV_P_ ev_fork *w)
		2203	{
		2204	if (expect_false (ev_is_active (w)))
		2205	return;
		2206
		2207	ev_start (EV_A_ (W)w, ++forkcnt);
		2208	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2209	forks [forkcnt - 1] = w;
		2210	}
		2211
		2212	void
		2213	ev_fork_stop (EV_P_ ev_fork *w)
		2214	{
		2215	clear_pending (EV_A_ (W)w);
		2216	if (expect_false (!ev_is_active (w)))
		2217	return;
		2218
		2219	{
		2220	int active = ((W)w)->active;
		2221	forks [active - 1] = forks [--forkcnt];
		2222	((W)forks [active - 1])->active = active;
		2223	}
		2224
		2225	ev_stop (EV_A_ (W)w);
		2226	}
		2227	#endif
		2228
1561	/*****************************************************************************/	2229	/*****************************************************************************/
1562		2230
1563	struct ev_once	2231	struct ev_once
1564	{	2232	{
1565	struct ev_io io;	2233	ev_io io;
1566	struct ev_timer to;	2234	ev_timer to;
1567	void (*cb)(int revents, void *arg);	2235	void (*cb)(int revents, void *arg);
1568	void *arg;	2236	void *arg;
1569	};	2237	};
1570		2238
1571	static void	2239	static void
…		…
1580		2248
1581	cb (revents, arg);	2249	cb (revents, arg);
1582	}	2250	}
1583		2251
1584	static void	2252	static void
1585	once_cb_io (EV_P_ struct ev_io *w, int revents)	2253	once_cb_io (EV_P_ ev_io *w, int revents)
1586	{	2254	{
1587	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2255	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1588	}	2256	}
1589		2257
1590	static void	2258	static void
1591	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2259	once_cb_to (EV_P_ ev_timer *w, int revents)
1592	{	2260	{
1593	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2261	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1594	}	2262	}
1595		2263
1596	void	2264	void
1597	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2265	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1598	{	2266	{
1599	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	2267	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1600		2268
1601	if (!once)	2269	if (expect_false (!once))
		2270	{
1602	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2271	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1603	else	2272	return;
1604	{	2273	}
		2274
1605	once->cb = cb;	2275	once->cb = cb;
1606	once->arg = arg;	2276	once->arg = arg;
1607		2277
1608	ev_init (&once->io, once_cb_io);	2278	ev_init (&once->io, once_cb_io);
1609	if (fd >= 0)	2279	if (fd >= 0)
1610	{	2280	{
1611	ev_io_set (&once->io, fd, events);	2281	ev_io_set (&once->io, fd, events);
1612	ev_io_start (EV_A_ &once->io);	2282	ev_io_start (EV_A_ &once->io);
1613	}	2283	}
1614		2284
1615	ev_init (&once->to, once_cb_to);	2285	ev_init (&once->to, once_cb_to);
1616	if (timeout >= 0.)	2286	if (timeout >= 0.)
1617	{	2287	{
1618	ev_timer_set (&once->to, timeout, 0.);	2288	ev_timer_set (&once->to, timeout, 0.);
1619	ev_timer_start (EV_A_ &once->to);	2289	ev_timer_start (EV_A_ &once->to);
1620	}
1621	}	2290	}
1622	}	2291	}
1623		2292
1624	#ifdef __cplusplus	2293	#ifdef __cplusplus
1625	}	2294	}

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