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Comparing libev/ev.c (file contents):
Revision 1.71 by root, Tue Nov 6 13:17:55 2007 UTC vs.
Revision 1.174 by root, Tue Dec 11 03:18:33 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
33		42
34	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
36	# 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
37	# endif	57	# endif
38		58
		59	# ifndef EV_USE_SELECT
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
40	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
41	# endif	65	# endif
42		66
		67	# ifndef EV_USE_POLL
43	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
44	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
45	# endif	73	# endif
46		74
		75	# ifndef EV_USE_EPOLL
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
49	# endif	81	# endif
50		82
		83	# ifndef EV_USE_KQUEUE
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# 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
53	# endif	105	# endif
54		106
55	#endif	107	#endif
56		108
57	#include <math.h>	109	#include <math.h>
…		…
64	#include <assert.h>	116	#include <assert.h>
65	#include <errno.h>	117	#include <errno.h>
66	#include <sys/types.h>	118	#include <sys/types.h>
67	#include <time.h>	119	#include <time.h>
68		120
69	#ifndef PERL
70	# include <signal.h>	121	#include <signal.h>
71	#endif
72		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
73	#ifndef WIN32	129	#ifndef _WIN32
74	# include <unistd.h>
75	# include <sys/time.h>	130	# include <sys/time.h>
76	# include <sys/wait.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
77	#endif	138	# endif
		139	#endif
		140
78	/**/	141	/**/
79		142
80	#ifndef EV_USE_MONOTONIC	143	#ifndef EV_USE_MONOTONIC
81	# define EV_USE_MONOTONIC 1	144	# define EV_USE_MONOTONIC 0
		145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
82	#endif	149	#endif
83		150
84	#ifndef EV_USE_SELECT	151	#ifndef EV_USE_SELECT
85	# define EV_USE_SELECT 1	152	# define EV_USE_SELECT 1
86	#endif	153	#endif
87		154
88	#ifndef EV_USE_POLL	155	#ifndef EV_USE_POLL
89	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	156	# ifdef _WIN32
		157	# define EV_USE_POLL 0
		158	# else
		159	# define EV_USE_POLL 1
		160	# endif
90	#endif	161	#endif
91		162
92	#ifndef EV_USE_EPOLL	163	#ifndef EV_USE_EPOLL
93	# define EV_USE_EPOLL 0	164	# define EV_USE_EPOLL 0
94	#endif	165	#endif
95		166
96	#ifndef EV_USE_KQUEUE	167	#ifndef EV_USE_KQUEUE
97	# define EV_USE_KQUEUE 0	168	# define EV_USE_KQUEUE 0
98	#endif	169	#endif
99		170
		171	#ifndef EV_USE_PORT
		172	# define EV_USE_PORT 0
		173	#endif
		174
100	#ifndef EV_USE_WIN32	175	#ifndef EV_USE_INOTIFY
101	# ifdef WIN32	176	# define EV_USE_INOTIFY 0
102	# define EV_USE_WIN32 0 /* it does not exist, use select */	177	#endif
103	# undef EV_USE_SELECT	178
104	# define EV_USE_SELECT 1	179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
105	# else	182	# else
106	# define EV_USE_WIN32 0	183	# define EV_PID_HASHSIZE 16
107	# endif	184	# endif
108	#endif	185	#endif
109		186
110	#ifndef EV_USE_REALTIME	187	#ifndef EV_INOTIFY_HASHSIZE
111	# define EV_USE_REALTIME 1	188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
112	#endif	193	#endif
113		194
114	/**/	195	/**/
115		196
116	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
…		…
121	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
122	# undef EV_USE_REALTIME	203	# undef EV_USE_REALTIME
123	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
124	#endif	205	#endif
125		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
126	/**/	219	/**/
127		220
128	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	221	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
129	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	222	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
130	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
131	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	223	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
132
133	#include "ev.h"
134		224
135	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
136	# define expect(expr,value) __builtin_expect ((expr),(value))	226	# define expect(expr,value) __builtin_expect ((expr),(value))
137	# define inline inline	227	# define noinline __attribute__ ((noinline))
138	#else	228	#else
139	# define expect(expr,value) (expr)	229	# define expect(expr,value) (expr)
140	# define inline static	230	# define noinline
		231	# if __STDC_VERSION__ < 199901L
		232	# define inline
		233	# endif
141	#endif	234	#endif
142		235
143	#define expect_false(expr) expect ((expr) != 0, 0)	236	#define expect_false(expr) expect ((expr) != 0, 0)
144	#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
145		245
146	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	246	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
147	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	247	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
148		248
		249	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		250	#define EMPTY2(a,b) /* used to suppress some warnings */
		251
149	typedef struct ev_watcher *W;	252	typedef ev_watcher *W;
150	typedef struct ev_watcher_list *WL;	253	typedef ev_watcher_list *WL;
151	typedef struct ev_watcher_time *WT;	254	typedef ev_watcher_time *WT;
152		255
153	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	256	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
154		257
155	#if WIN32	258	#ifdef _WIN32
156	/* note: the comment below could not be substantiated, but what would I care */	259	# include "ev_win32.c"
157	/* MSDN says this is required to handle SIGFPE */
158	volatile double SIGFPE_REQ = 0.0f;
159	#endif	260	#endif
160		261
161	/*****************************************************************************/	262	/*****************************************************************************/
162		263
163	static void (*syserr_cb)(const char *msg);	264	static void (*syserr_cb)(const char *msg);
164		265
		266	void
165	void ev_set_syserr_cb (void (*cb)(const char *msg))	267	ev_set_syserr_cb (void (*cb)(const char *msg))
166	{	268	{
167	syserr_cb = cb;	269	syserr_cb = cb;
168	}	270	}
169		271
170	static void	272	static void noinline
171	syserr (const char *msg)	273	syserr (const char *msg)
172	{	274	{
173	if (!msg)	275	if (!msg)
174	msg = "(libev) system error";	276	msg = "(libev) system error";
175		277
…		…
182	}	284	}
183	}	285	}
184		286
185	static void *(*alloc)(void *ptr, long size);	287	static void *(*alloc)(void *ptr, long size);
186		288
		289	void
187	void ev_set_allocator (void *(*cb)(void *ptr, long size))	290	ev_set_allocator (void *(*cb)(void *ptr, long size))
188	{	291	{
189	alloc = cb;	292	alloc = cb;
190	}	293	}
191		294
192	static void *	295	inline_speed void *
193	ev_realloc (void *ptr, long size)	296	ev_realloc (void *ptr, long size)
194	{	297	{
195	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	298	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
196		299
197	if (!ptr && size)	300	if (!ptr && size)
…		…
211	typedef struct	314	typedef struct
212	{	315	{
213	WL head;	316	WL head;
214	unsigned char events;	317	unsigned char events;
215	unsigned char reify;	318	unsigned char reify;
		319	#if EV_SELECT_IS_WINSOCKET
		320	SOCKET handle;
		321	#endif
216	} ANFD;	322	} ANFD;
217		323
218	typedef struct	324	typedef struct
219	{	325	{
220	W w;	326	W w;
221	int events;	327	int events;
222	} ANPENDING;	328	} ANPENDING;
223		329
		330	#if EV_USE_INOTIFY
		331	typedef struct
		332	{
		333	WL head;
		334	} ANFS;
		335	#endif
		336
224	#if EV_MULTIPLICITY	337	#if EV_MULTIPLICITY
225		338
226	struct ev_loop	339	struct ev_loop
227	{	340	{
		341	ev_tstamp ev_rt_now;
		342	#define ev_rt_now ((loop)->ev_rt_now)
228	# define VAR(name,decl) decl;	343	#define VAR(name,decl) decl;
229	# include "ev_vars.h"	344	#include "ev_vars.h"
230	};
231	# undef VAR	345	#undef VAR
		346	};
232	# include "ev_wrap.h"	347	#include "ev_wrap.h"
		348
		349	static struct ev_loop default_loop_struct;
		350	struct ev_loop *ev_default_loop_ptr;
233		351
234	#else	352	#else
235		353
		354	ev_tstamp ev_rt_now;
236	# define VAR(name,decl) static decl;	355	#define VAR(name,decl) static decl;
237	# include "ev_vars.h"	356	#include "ev_vars.h"
238	# undef VAR	357	#undef VAR
		358
		359	static int ev_default_loop_ptr;
239		360
240	#endif	361	#endif
241		362
242	/*****************************************************************************/	363	/*****************************************************************************/
243		364
244	inline ev_tstamp	365	ev_tstamp
245	ev_time (void)	366	ev_time (void)
246	{	367	{
247	#if EV_USE_REALTIME	368	#if EV_USE_REALTIME
248	struct timespec ts;	369	struct timespec ts;
249	clock_gettime (CLOCK_REALTIME, &ts);	370	clock_gettime (CLOCK_REALTIME, &ts);
…		…
253	gettimeofday (&tv, 0);	374	gettimeofday (&tv, 0);
254	return tv.tv_sec + tv.tv_usec * 1e-6;	375	return tv.tv_sec + tv.tv_usec * 1e-6;
255	#endif	376	#endif
256	}	377	}
257		378
258	inline ev_tstamp	379	ev_tstamp inline_size
259	get_clock (void)	380	get_clock (void)
260	{	381	{
261	#if EV_USE_MONOTONIC	382	#if EV_USE_MONOTONIC
262	if (expect_true (have_monotonic))	383	if (expect_true (have_monotonic))
263	{	384	{
…		…
268	#endif	389	#endif
269		390
270	return ev_time ();	391	return ev_time ();
271	}	392	}
272		393
		394	#if EV_MULTIPLICITY
273	ev_tstamp	395	ev_tstamp
274	ev_now (EV_P)	396	ev_now (EV_P)
275	{	397	{
276	return rt_now;	398	return ev_rt_now;
277	}	399	}
		400	#endif
278		401
279	#define array_roundsize(base,n) ((n) | 4 & ~3)	402	int inline_size
		403	array_nextsize (int elem, int cur, int cnt)
		404	{
		405	int ncur = cur + 1;
280		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	}
		429
281	#define array_needsize(base,cur,cnt,init) \	430	#define array_needsize(type,base,cur,cnt,init) \
282	if (expect_false ((cnt) > cur)) \	431	if (expect_false ((cnt) > (cur))) \
283	{ \	432	{ \
284	int newcnt = cur; \	433	int ocur_ = (cur); \
285	do \	434	(base) = (type *)array_realloc \
286	{ \	435	(sizeof (type), (base), &(cur), (cnt)); \
287	newcnt = array_roundsize (base, newcnt << 1); \	436	init ((base) + (ocur_), (cur) - ocur_); \
288	} \
289	while ((cnt) > newcnt); \
290	\
291	base = ev_realloc (base, sizeof (*base) * (newcnt)); \
292	init (base + cur, newcnt - cur); \
293	cur = newcnt; \
294	}	437	}
295		438
		439	#if 0
296	#define array_slim(stem) \	440	#define array_slim(type,stem) \
297	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	441	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
298	{ \	442	{ \
299	stem ## max = array_roundsize (stem ## cnt >> 1); \	443	stem ## max = array_roundsize (stem ## cnt >> 1); \
300	base = ev_realloc (base, sizeof (*base) * (stem ## max)); \	444	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
301	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	445	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
302	}	446	}
303		447	#endif
304	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
305	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
306	#define array_free_microshit(stem) \
307	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
308		448
309	#define array_free(stem, idx) \	449	#define array_free(stem, idx) \
310	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;
311		451
312	/*****************************************************************************/	452	/*****************************************************************************/
313		453
314	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
315	anfds_init (ANFD *base, int count)	483	anfds_init (ANFD *base, int count)
316	{	484	{
317	while (count--)	485	while (count--)
318	{	486	{
319	base->head = 0;	487	base->head = 0;
…		…
322		490
323	++base;	491	++base;
324	}	492	}
325	}	493	}
326		494
327	static void	495	void inline_speed
328	event (EV_P_ W w, int events)
329	{
330	if (w->pending)
331	{
332	pendings [ABSPRI (w)][w->pending - 1].events |= events;
333	return;
334	}
335
336	w->pending = ++pendingcnt [ABSPRI (w)];
337	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));
338	pendings [ABSPRI (w)][w->pending - 1].w = w;
339	pendings [ABSPRI (w)][w->pending - 1].events = events;
340	}
341
342	static void
343	queue_events (EV_P_ W *events, int eventcnt, int type)
344	{
345	int i;
346
347	for (i = 0; i < eventcnt; ++i)
348	event (EV_A_ events [i], type);
349	}
350
351	static void
352	fd_event (EV_P_ int fd, int events)	496	fd_event (EV_P_ int fd, int revents)
353	{	497	{
354	ANFD *anfd = anfds + fd;	498	ANFD *anfd = anfds + fd;
355	struct ev_io *w;	499	ev_io *w;
356		500
357	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)
358	{	502	{
359	int ev = w->events & events;	503	int ev = w->events & revents;
360		504
361	if (ev)	505	if (ev)
362	event (EV_A_ (W)w, ev);	506	ev_feed_event (EV_A_ (W)w, ev);
363	}	507	}
364	}	508	}
365		509
366	/*****************************************************************************/	510	void
		511	ev_feed_fd_event (EV_P_ int fd, int revents)
		512	{
		513	if (fd >= 0 && fd < anfdmax)
		514	fd_event (EV_A_ fd, revents);
		515	}
367		516
368	static void	517	void inline_size
369	fd_reify (EV_P)	518	fd_reify (EV_P)
370	{	519	{
371	int i;	520	int i;
372		521
373	for (i = 0; i < fdchangecnt; ++i)	522	for (i = 0; i < fdchangecnt; ++i)
374	{	523	{
375	int fd = fdchanges [i];	524	int fd = fdchanges [i];
376	ANFD *anfd = anfds + fd;	525	ANFD *anfd = anfds + fd;
377	struct ev_io *w;	526	ev_io *w;
378		527
379	int events = 0;	528	int events = 0;
380		529
381	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)
382	events |= w->events;	531	events |= w->events;
383		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
384	anfd->reify = 0;	542	anfd->reify = 0;
385		543
386	method_modify (EV_A_ fd, anfd->events, events);	544	backend_modify (EV_A_ fd, anfd->events, events);
387	anfd->events = events;	545	anfd->events = events;
388	}	546	}
389		547
390	fdchangecnt = 0;	548	fdchangecnt = 0;
391	}	549	}
392		550
393	static void	551	void inline_size
394	fd_change (EV_P_ int fd)	552	fd_change (EV_P_ int fd)
395	{	553	{
396	if (anfds [fd].reify)	554	if (expect_false (anfds [fd].reify))
397	return;	555	return;
398		556
399	anfds [fd].reify = 1;	557	anfds [fd].reify = 1;
400		558
401	++fdchangecnt;	559	++fdchangecnt;
402	array_needsize (fdchanges, fdchangemax, fdchangecnt, (void));	560	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
403	fdchanges [fdchangecnt - 1] = fd;	561	fdchanges [fdchangecnt - 1] = fd;
404	}	562	}
405		563
406	static void	564	void inline_speed
407	fd_kill (EV_P_ int fd)	565	fd_kill (EV_P_ int fd)
408	{	566	{
409	struct ev_io *w;	567	ev_io *w;
410		568
411	while ((w = (struct ev_io *)anfds [fd].head))	569	while ((w = (ev_io *)anfds [fd].head))
412	{	570	{
413	ev_io_stop (EV_A_ w);	571	ev_io_stop (EV_A_ w);
414	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);
415	}	573	}
416	}	574	}
417		575
418	static int	576	int inline_size
419	fd_valid (int fd)	577	fd_valid (int fd)
420	{	578	{
421	#ifdef WIN32	579	#ifdef _WIN32
422	return !!win32_get_osfhandle (fd);	580	return _get_osfhandle (fd) != -1;
423	#else	581	#else
424	return fcntl (fd, F_GETFD) != -1;	582	return fcntl (fd, F_GETFD) != -1;
425	#endif	583	#endif
426	}	584	}
427		585
428	/* called on EBADF to verify fds */	586	/* called on EBADF to verify fds */
429	static void	587	static void noinline
430	fd_ebadf (EV_P)	588	fd_ebadf (EV_P)
431	{	589	{
432	int fd;	590	int fd;
433		591
434	for (fd = 0; fd < anfdmax; ++fd)	592	for (fd = 0; fd < anfdmax; ++fd)
…		…
436	if (!fd_valid (fd) == -1 && errno == EBADF)	594	if (!fd_valid (fd) == -1 && errno == EBADF)
437	fd_kill (EV_A_ fd);	595	fd_kill (EV_A_ fd);
438	}	596	}
439		597
440	/* 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 */
441	static void	599	static void noinline
442	fd_enomem (EV_P)	600	fd_enomem (EV_P)
443	{	601	{
444	int fd;	602	int fd;
445		603
446	for (fd = anfdmax; fd--; )	604	for (fd = anfdmax; fd--; )
…		…
449	fd_kill (EV_A_ fd);	607	fd_kill (EV_A_ fd);
450	return;	608	return;
451	}	609	}
452	}	610	}
453		611
454	/* 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 */
455	static void	613	static void noinline
456	fd_rearm_all (EV_P)	614	fd_rearm_all (EV_P)
457	{	615	{
458	int fd;	616	int fd;
459		617
460	/* this should be highly optimised to not do anything but set a flag */
461	for (fd = 0; fd < anfdmax; ++fd)	618	for (fd = 0; fd < anfdmax; ++fd)
462	if (anfds [fd].events)	619	if (anfds [fd].events)
463	{	620	{
464	anfds [fd].events = 0;	621	anfds [fd].events = 0;
465	fd_change (EV_A_ fd);	622	fd_change (EV_A_ fd);
466	}	623	}
467	}	624	}
468		625
469	/*****************************************************************************/	626	/*****************************************************************************/
470		627
471	static void	628	void inline_speed
472	upheap (WT *heap, int k)	629	upheap (WT *heap, int k)
473	{	630	{
474	WT w = heap [k];	631	WT w = heap [k];
475		632
476	while (k && heap [k >> 1]->at > w->at)	633	while (k && heap [k >> 1]->at > w->at)
…		…
483	heap [k] = w;	640	heap [k] = w;
484	((W)heap [k])->active = k + 1;	641	((W)heap [k])->active = k + 1;
485		642
486	}	643	}
487		644
488	static void	645	void inline_speed
489	downheap (WT *heap, int N, int k)	646	downheap (WT *heap, int N, int k)
490	{	647	{
491	WT w = heap [k];	648	WT w = heap [k];
492		649
493	while (k < (N >> 1))	650	while (k < (N >> 1))
…		…
507		664
508	heap [k] = w;	665	heap [k] = w;
509	((W)heap [k])->active = k + 1;	666	((W)heap [k])->active = k + 1;
510	}	667	}
511		668
		669	void inline_size
		670	adjustheap (WT *heap, int N, int k)
		671	{
		672	upheap (heap, k);
		673	downheap (heap, N, k);
		674	}
		675
512	/*****************************************************************************/	676	/*****************************************************************************/
513		677
514	typedef struct	678	typedef struct
515	{	679	{
516	WL head;	680	WL head;
…		…
520	static ANSIG *signals;	684	static ANSIG *signals;
521	static int signalmax;	685	static int signalmax;
522		686
523	static int sigpipe [2];	687	static int sigpipe [2];
524	static sig_atomic_t volatile gotsig;	688	static sig_atomic_t volatile gotsig;
525	static struct ev_io sigev;	689	static ev_io sigev;
526		690
527	static void	691	void inline_size
528	signals_init (ANSIG *base, int count)	692	signals_init (ANSIG *base, int count)
529	{	693	{
530	while (count--)	694	while (count--)
531	{	695	{
532	base->head = 0;	696	base->head = 0;
…		…
537	}	701	}
538		702
539	static void	703	static void
540	sighandler (int signum)	704	sighandler (int signum)
541	{	705	{
542	#if WIN32	706	#if _WIN32
543	signal (signum, sighandler);	707	signal (signum, sighandler);
544	#endif	708	#endif
545		709
546	signals [signum - 1].gotsig = 1;	710	signals [signum - 1].gotsig = 1;
547		711
…		…
552	write (sigpipe [1], &signum, 1);	716	write (sigpipe [1], &signum, 1);
553	errno = old_errno;	717	errno = old_errno;
554	}	718	}
555	}	719	}
556		720
		721	void noinline
		722	ev_feed_signal_event (EV_P_ int signum)
		723	{
		724	WL w;
		725
		726	#if EV_MULTIPLICITY
		727	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		728	#endif
		729
		730	--signum;
		731
		732	if (signum < 0 || signum >= signalmax)
		733	return;
		734
		735	signals [signum].gotsig = 0;
		736
		737	for (w = signals [signum].head; w; w = w->next)
		738	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		739	}
		740
557	static void	741	static void
558	sigcb (EV_P_ struct ev_io *iow, int revents)	742	sigcb (EV_P_ ev_io *iow, int revents)
559	{	743	{
560	WL w;
561	int signum;	744	int signum;
562		745
563	read (sigpipe [0], &revents, 1);	746	read (sigpipe [0], &revents, 1);
564	gotsig = 0;	747	gotsig = 0;
565		748
566	for (signum = signalmax; signum--; )	749	for (signum = signalmax; signum--; )
567	if (signals [signum].gotsig)	750	if (signals [signum].gotsig)
568	{	751	ev_feed_signal_event (EV_A_ signum + 1);
569	signals [signum].gotsig = 0;
570
571	for (w = signals [signum].head; w; w = w->next)
572	event (EV_A_ (W)w, EV_SIGNAL);
573	}
574	}	752	}
575		753
576	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
577	siginit (EV_P)	767	siginit (EV_P)
578	{	768	{
579	#ifndef WIN32	769	fd_intern (sigpipe [0]);
580	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	770	fd_intern (sigpipe [1]);
581	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
582
583	/* rather than sort out wether we really need nb, set it */
584	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
585	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
586	#endif
587		771
588	ev_io_set (&sigev, sigpipe [0], EV_READ);	772	ev_io_set (&sigev, sigpipe [0], EV_READ);
589	ev_io_start (EV_A_ &sigev);	773	ev_io_start (EV_A_ &sigev);
590	ev_unref (EV_A); /* child watcher should not keep loop alive */	774	ev_unref (EV_A); /* child watcher should not keep loop alive */
591	}	775	}
592		776
593	/*****************************************************************************/	777	/*****************************************************************************/
594		778
595	static struct ev_child *childs [PID_HASHSIZE];	779	static ev_child *childs [EV_PID_HASHSIZE];
596		780
597	#ifndef WIN32	781	#ifndef _WIN32
598		782
599	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	}
600		799
601	#ifndef WCONTINUED	800	#ifndef WCONTINUED
602	# define WCONTINUED 0	801	# define WCONTINUED 0
603	#endif	802	#endif
604		803
605	static void	804	static void
606	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
607	{
608	struct ev_child *w;
609
610	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
611	if (w->pid == pid || !w->pid)
612	{
613	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
614	w->rpid = pid;
615	w->rstatus = status;
616	event (EV_A_ (W)w, EV_CHILD);
617	}
618	}
619
620	static void
621	childcb (EV_P_ struct ev_signal *sw, int revents)	805	childcb (EV_P_ ev_signal *sw, int revents)
622	{	806	{
623	int pid, status;	807	int pid, status;
624		808
		809	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
625	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	810	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
626	{	811	if (!WCONTINUED
		812	|| errno != EINVAL
		813	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		814	return;
		815
627	/* 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 */
628	event (EV_A_ (W)sw, EV_SIGNAL);	818	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
629		819
630	child_reap (EV_A_ sw, pid, pid, status);	820	child_reap (EV_A_ sw, pid, pid, status);
		821	if (EV_PID_HASHSIZE > 1)
631	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 */
632	}
633	}	823	}
634		824
635	#endif	825	#endif
636		826
637	/*****************************************************************************/	827	/*****************************************************************************/
638		828
		829	#if EV_USE_PORT
		830	# include "ev_port.c"
		831	#endif
639	#if EV_USE_KQUEUE	832	#if EV_USE_KQUEUE
640	# include "ev_kqueue.c"	833	# include "ev_kqueue.c"
641	#endif	834	#endif
642	#if EV_USE_EPOLL	835	#if EV_USE_EPOLL
643	# include "ev_epoll.c"	836	# include "ev_epoll.c"
…		…
660	{	853	{
661	return EV_VERSION_MINOR;	854	return EV_VERSION_MINOR;
662	}	855	}
663		856
664	/* 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 */
665	static int	858	int inline_size
666	enable_secure (void)	859	enable_secure (void)
667	{	860	{
668	#ifdef WIN32	861	#ifdef _WIN32
669	return 0;	862	return 0;
670	#else	863	#else
671	return getuid () != geteuid ()	864	return getuid () != geteuid ()
672	|| getgid () != getegid ();	865	|| getgid () != getegid ();
673	#endif	866	#endif
674	}	867	}
675		868
676	int	869	unsigned int
677	ev_method (EV_P)	870	ev_supported_backends (void)
678	{	871	{
679	return method;	872	unsigned int flags = 0;
680	}
681		873
682	static void	874	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
683	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)
684	{	885	{
685	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)
686	{	925	{
687	#if EV_USE_MONOTONIC	926	#if EV_USE_MONOTONIC
688	{	927	{
689	struct timespec ts;	928	struct timespec ts;
690	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	929	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
691	have_monotonic = 1;	930	have_monotonic = 1;
692	}	931	}
693	#endif	932	#endif
694		933
695	rt_now = ev_time ();	934	ev_rt_now = ev_time ();
696	mn_now = get_clock ();	935	mn_now = get_clock ();
697	now_floor = mn_now;	936	now_floor = mn_now;
698	rtmn_diff = rt_now - mn_now;	937	rtmn_diff = ev_rt_now - mn_now;
699		938
700	if (methods == EVMETHOD_AUTO)	939	/* pid check not overridable via env */
701	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"))
702	methods = atoi (getenv ("LIBEV_METHODS"));	948	flags = atoi (getenv ("LIBEV_FLAGS"));
703	else
704	methods = EVMETHOD_ANY;
705		949
706	method = 0;	950	if (!(flags & 0x0000ffffUL))
		951	flags |= ev_recommended_backends ();
		952
		953	backend = 0;
		954	backend_fd = -1;
707	#if EV_USE_WIN32	955	#if EV_USE_INOTIFY
708	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);
709	#endif	961	#endif
710	#if EV_USE_KQUEUE	962	#if EV_USE_KQUEUE
711	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	963	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
712	#endif	964	#endif
713	#if EV_USE_EPOLL	965	#if EV_USE_EPOLL
714	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	966	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
715	#endif	967	#endif
716	#if EV_USE_POLL	968	#if EV_USE_POLL
717	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	969	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
718	#endif	970	#endif
719	#if EV_USE_SELECT	971	#if EV_USE_SELECT
720	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	972	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
721	#endif	973	#endif
722		974
723	ev_watcher_init (&sigev, sigcb);	975	ev_init (&sigev, sigcb);
724	ev_set_priority (&sigev, EV_MAXPRI);	976	ev_set_priority (&sigev, EV_MAXPRI);
725	}	977	}
726	}	978	}
727		979
728	void	980	static void noinline
729	loop_destroy (EV_P)	981	loop_destroy (EV_P)
730	{	982	{
731	int i;	983	int i;
732		984
733	#if EV_USE_WIN32	985	#if EV_USE_INOTIFY
734	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);
735	#endif	995	#endif
736	#if EV_USE_KQUEUE	996	#if EV_USE_KQUEUE
737	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	997	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
738	#endif	998	#endif
739	#if EV_USE_EPOLL	999	#if EV_USE_EPOLL
740	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1000	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
741	#endif	1001	#endif
742	#if EV_USE_POLL	1002	#if EV_USE_POLL
743	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1003	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
744	#endif	1004	#endif
745	#if EV_USE_SELECT	1005	#if EV_USE_SELECT
746	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1006	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
747	#endif	1007	#endif
748		1008
749	for (i = NUMPRI; i--; )	1009	for (i = NUMPRI; i--; )
		1010	{
750	array_free (pending, [i]);	1011	array_free (pending, [i]);
		1012	#if EV_IDLE_ENABLE
		1013	array_free (idle, [i]);
		1014	#endif
		1015	}
751		1016
752	/* have to use the microsoft-never-gets-it-right macro */	1017	/* have to use the microsoft-never-gets-it-right macro */
753	array_free_microshit (fdchange);	1018	array_free (fdchange, EMPTY);
754	array_free_microshit (timer);	1019	array_free (timer, EMPTY);
755	array_free_microshit (periodic);	1020	#if EV_PERIODIC_ENABLE
756	array_free_microshit (idle);	1021	array_free (periodic, EMPTY);
757	array_free_microshit (prepare);	1022	#endif
758	array_free_microshit (check);	1023	array_free (prepare, EMPTY);
		1024	array_free (check, EMPTY);
759		1025
760	method = 0;	1026	backend = 0;
761	}	1027	}
762		1028
763	static void	1029	void inline_size infy_fork (EV_P);
		1030
		1031	void inline_size
764	loop_fork (EV_P)	1032	loop_fork (EV_P)
765	{	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
766	#if EV_USE_EPOLL	1040	#if EV_USE_EPOLL
767	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1041	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
768	#endif	1042	#endif
769	#if EV_USE_KQUEUE	1043	#if EV_USE_INOTIFY
770	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1044	infy_fork (EV_A);
771	#endif	1045	#endif
772		1046
773	if (ev_is_active (&sigev))	1047	if (ev_is_active (&sigev))
774	{	1048	{
775	/* default loop */	1049	/* default loop */
…		…
788	postfork = 0;	1062	postfork = 0;
789	}	1063	}
790		1064
791	#if EV_MULTIPLICITY	1065	#if EV_MULTIPLICITY
792	struct ev_loop *	1066	struct ev_loop *
793	ev_loop_new (int methods)	1067	ev_loop_new (unsigned int flags)
794	{	1068	{
795	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));
796		1070
797	memset (loop, 0, sizeof (struct ev_loop));	1071	memset (loop, 0, sizeof (struct ev_loop));
798		1072
799	loop_init (EV_A_ methods);	1073	loop_init (EV_A_ flags);
800		1074
801	if (ev_method (EV_A))	1075	if (ev_backend (EV_A))
802	return loop;	1076	return loop;
803		1077
804	return 0;	1078	return 0;
805	}	1079	}
806		1080
…		…
818	}	1092	}
819		1093
820	#endif	1094	#endif
821		1095
822	#if EV_MULTIPLICITY	1096	#if EV_MULTIPLICITY
823	struct ev_loop default_loop_struct;
824	static struct ev_loop *default_loop;
825
826	struct ev_loop *	1097	struct ev_loop *
		1098	ev_default_loop_init (unsigned int flags)
827	#else	1099	#else
828	static int default_loop;
829
830	int	1100	int
		1101	ev_default_loop (unsigned int flags)
831	#endif	1102	#endif
832	ev_default_loop (int methods)
833	{	1103	{
834	if (sigpipe [0] == sigpipe [1])	1104	if (sigpipe [0] == sigpipe [1])
835	if (pipe (sigpipe))	1105	if (pipe (sigpipe))
836	return 0;	1106	return 0;
837		1107
838	if (!default_loop)	1108	if (!ev_default_loop_ptr)
839	{	1109	{
840	#if EV_MULTIPLICITY	1110	#if EV_MULTIPLICITY
841	struct ev_loop *loop = default_loop = &default_loop_struct;	1111	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
842	#else	1112	#else
843	default_loop = 1;	1113	ev_default_loop_ptr = 1;
844	#endif	1114	#endif
845		1115
846	loop_init (EV_A_ methods);	1116	loop_init (EV_A_ flags);
847		1117
848	if (ev_method (EV_A))	1118	if (ev_backend (EV_A))
849	{	1119	{
850	siginit (EV_A);	1120	siginit (EV_A);
851		1121
852	#ifndef WIN32	1122	#ifndef _WIN32
853	ev_signal_init (&childev, childcb, SIGCHLD);	1123	ev_signal_init (&childev, childcb, SIGCHLD);
854	ev_set_priority (&childev, EV_MAXPRI);	1124	ev_set_priority (&childev, EV_MAXPRI);
855	ev_signal_start (EV_A_ &childev);	1125	ev_signal_start (EV_A_ &childev);
856	ev_unref (EV_A); /* child watcher should not keep loop alive */	1126	ev_unref (EV_A); /* child watcher should not keep loop alive */
857	#endif	1127	#endif
858	}	1128	}
859	else	1129	else
860	default_loop = 0;	1130	ev_default_loop_ptr = 0;
861	}	1131	}
862		1132
863	return default_loop;	1133	return ev_default_loop_ptr;
864	}	1134	}
865		1135
866	void	1136	void
867	ev_default_destroy (void)	1137	ev_default_destroy (void)
868	{	1138	{
869	#if EV_MULTIPLICITY	1139	#if EV_MULTIPLICITY
870	struct ev_loop *loop = default_loop;	1140	struct ev_loop *loop = ev_default_loop_ptr;
871	#endif	1141	#endif
872		1142
873	#ifndef WIN32	1143	#ifndef _WIN32
874	ev_ref (EV_A); /* child watcher */	1144	ev_ref (EV_A); /* child watcher */
875	ev_signal_stop (EV_A_ &childev);	1145	ev_signal_stop (EV_A_ &childev);
876	#endif	1146	#endif
877		1147
878	ev_ref (EV_A); /* signal watcher */	1148	ev_ref (EV_A); /* signal watcher */
…		…
886		1156
887	void	1157	void
888	ev_default_fork (void)	1158	ev_default_fork (void)
889	{	1159	{
890	#if EV_MULTIPLICITY	1160	#if EV_MULTIPLICITY
891	struct ev_loop *loop = default_loop;	1161	struct ev_loop *loop = ev_default_loop_ptr;
892	#endif	1162	#endif
893		1163
894	if (method)	1164	if (backend)
895	postfork = 1;	1165	postfork = 1;
896	}	1166	}
897		1167
898	/*****************************************************************************/	1168	/*****************************************************************************/
899		1169
900	static void	1170	void
		1171	ev_invoke (EV_P_ void *w, int revents)
		1172	{
		1173	EV_CB_INVOKE ((W)w, revents);
		1174	}
		1175
		1176	void inline_speed
901	call_pending (EV_P)	1177	call_pending (EV_P)
902	{	1178	{
903	int pri;	1179	int pri;
904		1180
905	for (pri = NUMPRI; pri--; )	1181	for (pri = NUMPRI; pri--; )
906	while (pendingcnt [pri])	1182	while (pendingcnt [pri])
907	{	1183	{
908	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1184	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
909		1185
910	if (p->w)	1186	if (expect_true (p->w))
911	{	1187	{
		1188	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1189
912	p->w->pending = 0;	1190	p->w->pending = 0;
913	p->w->cb (EV_A_ p->w, p->events);	1191	EV_CB_INVOKE (p->w, p->events);
914	}	1192	}
915	}	1193	}
916	}	1194	}
917		1195
918	static void	1196	void inline_size
919	timers_reify (EV_P)	1197	timers_reify (EV_P)
920	{	1198	{
921	while (timercnt && ((WT)timers [0])->at <= mn_now)	1199	while (timercnt && ((WT)timers [0])->at <= mn_now)
922	{	1200	{
923	struct ev_timer *w = timers [0];	1201	ev_timer *w = timers [0];
924		1202
925	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1203	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
926		1204
927	/* first reschedule or stop timer */	1205	/* first reschedule or stop timer */
928	if (w->repeat)	1206	if (w->repeat)
929	{	1207	{
930	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.));
		1209
931	((WT)w)->at = mn_now + w->repeat;	1210	((WT)w)->at += w->repeat;
		1211	if (((WT)w)->at < mn_now)
		1212	((WT)w)->at = mn_now;
		1213
932	downheap ((WT *)timers, timercnt, 0);	1214	downheap ((WT *)timers, timercnt, 0);
933	}	1215	}
934	else	1216	else
935	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1217	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
936		1218
937	event (EV_A_ (W)w, EV_TIMEOUT);	1219	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
938	}	1220	}
939	}	1221	}
940		1222
941	static void	1223	#if EV_PERIODIC_ENABLE
		1224	void inline_size
942	periodics_reify (EV_P)	1225	periodics_reify (EV_P)
943	{	1226	{
944	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1227	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
945	{	1228	{
946	struct ev_periodic *w = periodics [0];	1229	ev_periodic *w = periodics [0];
947		1230
948	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1231	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
949		1232
950	/* first reschedule or stop timer */	1233	/* first reschedule or stop timer */
951	if (w->interval)	1234	if (w->reschedule_cb)
952	{	1235	{
		1236	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001220703125 /* 1/8192 */);
		1237	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1238	downheap ((WT *)periodics, periodiccnt, 0);
		1239	}
		1240	else if (w->interval)
		1241	{
953	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1242	((WT)w)->at = w->offset + floor ((ev_rt_now - w->offset) / w->interval + 1.) * w->interval;
954	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1243	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
955	downheap ((WT *)periodics, periodiccnt, 0);	1244	downheap ((WT *)periodics, periodiccnt, 0);
956	}	1245	}
957	else	1246	else
958	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1247	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
959		1248
960	event (EV_A_ (W)w, EV_PERIODIC);	1249	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
961	}	1250	}
962	}	1251	}
963		1252
964	static void	1253	static void noinline
965	periodics_reschedule (EV_P)	1254	periodics_reschedule (EV_P)
966	{	1255	{
967	int i;	1256	int i;
968		1257
969	/* adjust periodics after time jump */	1258	/* adjust periodics after time jump */
970	for (i = 0; i < periodiccnt; ++i)	1259	for (i = 0; i < periodiccnt; ++i)
971	{	1260	{
972	struct ev_periodic *w = periodics [i];	1261	ev_periodic *w = periodics [i];
973		1262
		1263	if (w->reschedule_cb)
		1264	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
974	if (w->interval)	1265	else if (w->interval)
		1266	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1267	}
		1268
		1269	/* now rebuild the heap */
		1270	for (i = periodiccnt >> 1; i--; )
		1271	downheap ((WT *)periodics, periodiccnt, i);
		1272	}
		1273	#endif
		1274
		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--; )
975	{	1284	{
976	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1285	if (pendingcnt [pri])
		1286	break;
977		1287
978	if (fabs (diff) >= 1e-4)	1288	if (idlecnt [pri])
979	{	1289	{
980	ev_periodic_stop (EV_A_ w);	1290	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
981	ev_periodic_start (EV_A_ w);	1291	break;
982
983	i = 0; /* restart loop, inefficient, but time jumps should be rare */
984	}	1292	}
985	}	1293	}
986	}	1294	}
987	}	1295	}
		1296	#endif
988		1297
989	inline int	1298	int inline_size
990	time_update_monotonic (EV_P)	1299	time_update_monotonic (EV_P)
991	{	1300	{
992	mn_now = get_clock ();	1301	mn_now = get_clock ();
993		1302
994	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1303	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
995	{	1304	{
996	rt_now = rtmn_diff + mn_now;	1305	ev_rt_now = rtmn_diff + mn_now;
997	return 0;	1306	return 0;
998	}	1307	}
999	else	1308	else
1000	{	1309	{
1001	now_floor = mn_now;	1310	now_floor = mn_now;
1002	rt_now = ev_time ();	1311	ev_rt_now = ev_time ();
1003	return 1;	1312	return 1;
1004	}	1313	}
1005	}	1314	}
1006		1315
1007	static void	1316	void inline_size
1008	time_update (EV_P)	1317	time_update (EV_P)
1009	{	1318	{
1010	int i;	1319	int i;
1011		1320
1012	#if EV_USE_MONOTONIC	1321	#if EV_USE_MONOTONIC
…		…
1014	{	1323	{
1015	if (time_update_monotonic (EV_A))	1324	if (time_update_monotonic (EV_A))
1016	{	1325	{
1017	ev_tstamp odiff = rtmn_diff;	1326	ev_tstamp odiff = rtmn_diff;
1018		1327
1019	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; )
1020	{	1337	{
1021	rtmn_diff = rt_now - mn_now;	1338	rtmn_diff = ev_rt_now - mn_now;
1022		1339
1023	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1340	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1024	return; /* all is well */	1341	return; /* all is well */
1025		1342
1026	rt_now = ev_time ();	1343	ev_rt_now = ev_time ();
1027	mn_now = get_clock ();	1344	mn_now = get_clock ();
1028	now_floor = mn_now;	1345	now_floor = mn_now;
1029	}	1346	}
1030		1347
		1348	# if EV_PERIODIC_ENABLE
1031	periodics_reschedule (EV_A);	1349	periodics_reschedule (EV_A);
		1350	# endif
1032	/* no timer adjustment, as the monotonic clock doesn't jump */	1351	/* no timer adjustment, as the monotonic clock doesn't jump */
1033	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1352	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1034	}	1353	}
1035	}	1354	}
1036	else	1355	else
1037	#endif	1356	#endif
1038	{	1357	{
1039	rt_now = ev_time ();	1358	ev_rt_now = ev_time ();
1040		1359
1041	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1360	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1042	{	1361	{
		1362	#if EV_PERIODIC_ENABLE
1043	periodics_reschedule (EV_A);	1363	periodics_reschedule (EV_A);
		1364	#endif
1044		1365
1045	/* 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 */
1046	for (i = 0; i < timercnt; ++i)	1367	for (i = 0; i < timercnt; ++i)
1047	((WT)timers [i])->at += rt_now - mn_now;	1368	((WT)timers [i])->at += ev_rt_now - mn_now;
1048	}	1369	}
1049		1370
1050	mn_now = rt_now;	1371	mn_now = ev_rt_now;
1051	}	1372	}
1052	}	1373	}
1053		1374
1054	void	1375	void
1055	ev_ref (EV_P)	1376	ev_ref (EV_P)
…		…
1066	static int loop_done;	1387	static int loop_done;
1067		1388
1068	void	1389	void
1069	ev_loop (EV_P_ int flags)	1390	ev_loop (EV_P_ int flags)
1070	{	1391	{
1071	double block;
1072	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 */
1073		1397
1074	do	1398	do
1075	{	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
1076	/* queue check watchers (and execute them) */	1419	/* queue prepare watchers (and execute them) */
1077	if (expect_false (preparecnt))	1420	if (expect_false (preparecnt))
1078	{	1421	{
1079	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1422	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1080	call_pending (EV_A);	1423	call_pending (EV_A);
1081	}	1424	}
1082		1425
		1426	if (expect_false (!activecnt))
		1427	break;
		1428
1083	/* we might have forked, so reify kernel state if necessary */	1429	/* we might have forked, so reify kernel state if necessary */
1084	if (expect_false (postfork))	1430	if (expect_false (postfork))
1085	loop_fork (EV_A);	1431	loop_fork (EV_A);
1086		1432
1087	/* update fd-related kernel structures */	1433	/* update fd-related kernel structures */
1088	fd_reify (EV_A);	1434	fd_reify (EV_A);
1089		1435
1090	/* calculate blocking time */	1436	/* calculate blocking time */
		1437	{
		1438	ev_tstamp block;
1091		1439
1092	/* we only need this for !monotonic clockor timers, but as we basically	1440	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1093	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 */
1094	#if EV_USE_MONOTONIC	1445	#if EV_USE_MONOTONIC
1095	if (expect_true (have_monotonic))	1446	if (expect_true (have_monotonic))
1096	time_update_monotonic (EV_A);	1447	time_update_monotonic (EV_A);
1097	else	1448	else
1098	#endif	1449	#endif
1099	{	1450	{
1100	rt_now = ev_time ();	1451	ev_rt_now = ev_time ();
1101	mn_now = rt_now;	1452	mn_now = ev_rt_now;
1102	}	1453	}
1103		1454
1104	if (flags & EVLOOP_NONBLOCK || idlecnt)
1105	block = 0.;
1106	else
1107	{
1108	block = MAX_BLOCKTIME;	1455	block = MAX_BLOCKTIME;
1109		1456
1110	if (timercnt)	1457	if (timercnt)
1111	{	1458	{
1112	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1459	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1113	if (block > to) block = to;	1460	if (block > to) block = to;
1114	}	1461	}
1115		1462
		1463	#if EV_PERIODIC_ENABLE
1116	if (periodiccnt)	1464	if (periodiccnt)
1117	{	1465	{
1118	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1466	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1119	if (block > to) block = to;	1467	if (block > to) block = to;
1120	}	1468	}
		1469	#endif
1121		1470
1122	if (block < 0.) block = 0.;	1471	if (expect_false (block < 0.)) block = 0.;
1123	}	1472	}
1124		1473
		1474	++loop_count;
1125	method_poll (EV_A_ block);	1475	backend_poll (EV_A_ block);
		1476	}
1126		1477
1127	/* update rt_now, do magic */	1478	/* update ev_rt_now, do magic */
1128	time_update (EV_A);	1479	time_update (EV_A);
1129		1480
1130	/* queue pending timers and reschedule them */	1481	/* queue pending timers and reschedule them */
1131	timers_reify (EV_A); /* relative timers called last */	1482	timers_reify (EV_A); /* relative timers called last */
		1483	#if EV_PERIODIC_ENABLE
1132	periodics_reify (EV_A); /* absolute timers called first */	1484	periodics_reify (EV_A); /* absolute timers called first */
		1485	#endif
1133		1486
		1487	#if EV_IDLE_ENABLE
1134	/* queue idle watchers unless io or timers are pending */	1488	/* queue idle watchers unless other events are pending */
1135	if (!pendingcnt)	1489	idle_reify (EV_A);
1136	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1490	#endif
1137		1491
1138	/* queue check watchers, to be executed first */	1492	/* queue check watchers, to be executed first */
1139	if (checkcnt)	1493	if (expect_false (checkcnt))
1140	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1494	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1141		1495
1142	call_pending (EV_A);	1496	call_pending (EV_A);
		1497
1143	}	1498	}
1144	while (activecnt && !loop_done);	1499	while (expect_true (activecnt && !loop_done));
1145		1500
1146	if (loop_done != 2)	1501	if (loop_done == EVUNLOOP_ONE)
1147	loop_done = 0;	1502	loop_done = EVUNLOOP_CANCEL;
1148	}	1503	}
1149		1504
1150	void	1505	void
1151	ev_unloop (EV_P_ int how)	1506	ev_unloop (EV_P_ int how)
1152	{	1507	{
1153	loop_done = how;	1508	loop_done = how;
1154	}	1509	}
1155		1510
1156	/*****************************************************************************/	1511	/*****************************************************************************/
1157		1512
1158	inline void	1513	void inline_size
1159	wlist_add (WL *head, WL elem)	1514	wlist_add (WL *head, WL elem)
1160	{	1515	{
1161	elem->next = *head;	1516	elem->next = *head;
1162	*head = elem;	1517	*head = elem;
1163	}	1518	}
1164		1519
1165	inline void	1520	void inline_size
1166	wlist_del (WL *head, WL elem)	1521	wlist_del (WL *head, WL elem)
1167	{	1522	{
1168	while (*head)	1523	while (*head)
1169	{	1524	{
1170	if (*head == elem)	1525	if (*head == elem)
…		…
1175		1530
1176	head = &(*head)->next;	1531	head = &(*head)->next;
1177	}	1532	}
1178	}	1533	}
1179		1534
1180	inline void	1535	void inline_speed
1181	ev_clear_pending (EV_P_ W w)	1536	clear_pending (EV_P_ W w)
1182	{	1537	{
1183	if (w->pending)	1538	if (w->pending)
1184	{	1539	{
1185	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1540	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1186	w->pending = 0;	1541	w->pending = 0;
1187	}	1542	}
1188	}	1543	}
1189		1544
1190	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 (expect_true (pending))
		1552	{
		1553	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1554	w_->pending = 0;
		1555	p->w = 0;
		1556	return p->events;
		1557	}
		1558	else
		1559	return 0;
		1560	}
		1561
		1562	void inline_size
		1563	pri_adjust (EV_P_ W w)
		1564	{
		1565	int pri = w->priority;
		1566	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1567	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1568	w->priority = pri;
		1569	}
		1570
		1571	void inline_speed
1191	ev_start (EV_P_ W w, int active)	1572	ev_start (EV_P_ W w, int active)
1192	{	1573	{
1193	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1574	pri_adjust (EV_A_ w);
1194	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1195
1196	w->active = active;	1575	w->active = active;
1197	ev_ref (EV_A);	1576	ev_ref (EV_A);
1198	}	1577	}
1199		1578
1200	inline void	1579	void inline_size
1201	ev_stop (EV_P_ W w)	1580	ev_stop (EV_P_ W w)
1202	{	1581	{
1203	ev_unref (EV_A);	1582	ev_unref (EV_A);
1204	w->active = 0;	1583	w->active = 0;
1205	}	1584	}
1206		1585
1207	/*****************************************************************************/	1586	/*****************************************************************************/
1208		1587
1209	void	1588	void noinline
1210	ev_io_start (EV_P_ struct ev_io *w)	1589	ev_io_start (EV_P_ ev_io *w)
1211	{	1590	{
1212	int fd = w->fd;	1591	int fd = w->fd;
1213		1592
1214	if (ev_is_active (w))	1593	if (expect_false (ev_is_active (w)))
1215	return;	1594	return;
1216		1595
1217	assert (("ev_io_start called with negative fd", fd >= 0));	1596	assert (("ev_io_start called with negative fd", fd >= 0));
1218		1597
1219	ev_start (EV_A_ (W)w, 1);	1598	ev_start (EV_A_ (W)w, 1);
1220	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1599	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1221	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1600	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1222		1601
1223	fd_change (EV_A_ fd);	1602	fd_change (EV_A_ fd);
1224	}	1603	}
1225		1604
1226	void	1605	void noinline
1227	ev_io_stop (EV_P_ struct ev_io *w)	1606	ev_io_stop (EV_P_ ev_io *w)
1228	{	1607	{
1229	ev_clear_pending (EV_A_ (W)w);	1608	clear_pending (EV_A_ (W)w);
1230	if (!ev_is_active (w))	1609	if (expect_false (!ev_is_active (w)))
1231	return;	1610	return;
		1611
		1612	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1232		1613
1233	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1614	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1234	ev_stop (EV_A_ (W)w);	1615	ev_stop (EV_A_ (W)w);
1235		1616
1236	fd_change (EV_A_ w->fd);	1617	fd_change (EV_A_ w->fd);
1237	}	1618	}
1238		1619
1239	void	1620	void noinline
1240	ev_timer_start (EV_P_ struct ev_timer *w)	1621	ev_timer_start (EV_P_ ev_timer *w)
1241	{	1622	{
1242	if (ev_is_active (w))	1623	if (expect_false (ev_is_active (w)))
1243	return;	1624	return;
1244		1625
1245	((WT)w)->at += mn_now;	1626	((WT)w)->at += mn_now;
1246		1627
1247	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1628	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1248		1629
1249	ev_start (EV_A_ (W)w, ++timercnt);	1630	ev_start (EV_A_ (W)w, ++timercnt);
1250	array_needsize (timers, timermax, timercnt, (void));	1631	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1251	timers [timercnt - 1] = w;	1632	timers [timercnt - 1] = w;
1252	upheap ((WT *)timers, timercnt - 1);	1633	upheap ((WT *)timers, timercnt - 1);
1253		1634
		1635	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1636	}
		1637
		1638	void noinline
		1639	ev_timer_stop (EV_P_ ev_timer *w)
		1640	{
		1641	clear_pending (EV_A_ (W)w);
		1642	if (expect_false (!ev_is_active (w)))
		1643	return;
		1644
1254	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1645	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1255	}
1256		1646
1257	void	1647	{
1258	ev_timer_stop (EV_P_ struct ev_timer *w)	1648	int active = ((W)w)->active;
1259	{
1260	ev_clear_pending (EV_A_ (W)w);
1261	if (!ev_is_active (w))
1262	return;
1263		1649
1264	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1650	if (expect_true (--active < --timercnt))
1265
1266	if (((W)w)->active < timercnt--)
1267	{	1651	{
1268	timers [((W)w)->active - 1] = timers [timercnt];	1652	timers [active] = timers [timercnt];
1269	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1653	adjustheap ((WT *)timers, timercnt, active);
1270	}	1654	}
		1655	}
1271		1656
1272	((WT)w)->at = w->repeat;	1657	((WT)w)->at -= mn_now;
1273		1658
1274	ev_stop (EV_A_ (W)w);	1659	ev_stop (EV_A_ (W)w);
1275	}	1660	}
1276		1661
1277	void	1662	void noinline
1278	ev_timer_again (EV_P_ struct ev_timer *w)	1663	ev_timer_again (EV_P_ ev_timer *w)
1279	{	1664	{
1280	if (ev_is_active (w))	1665	if (ev_is_active (w))
1281	{	1666	{
1282	if (w->repeat)	1667	if (w->repeat)
1283	{	1668	{
1284	((WT)w)->at = mn_now + w->repeat;	1669	((WT)w)->at = mn_now + w->repeat;
1285	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1670	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1286	}	1671	}
1287	else	1672	else
1288	ev_timer_stop (EV_A_ w);	1673	ev_timer_stop (EV_A_ w);
1289	}	1674	}
1290	else if (w->repeat)	1675	else if (w->repeat)
		1676	{
		1677	w->at = w->repeat;
1291	ev_timer_start (EV_A_ w);	1678	ev_timer_start (EV_A_ w);
		1679	}
1292	}	1680	}
1293		1681
1294	void	1682	#if EV_PERIODIC_ENABLE
		1683	void noinline
1295	ev_periodic_start (EV_P_ struct ev_periodic *w)	1684	ev_periodic_start (EV_P_ ev_periodic *w)
1296	{	1685	{
1297	if (ev_is_active (w))	1686	if (expect_false (ev_is_active (w)))
1298	return;	1687	return;
1299		1688
		1689	if (w->reschedule_cb)
		1690	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1691	else if (w->interval)
		1692	{
1300	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1693	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1301
1302	/* this formula differs from the one in periodic_reify because we do not always round up */	1694	/* this formula differs from the one in periodic_reify because we do not always round up */
1303	if (w->interval)
1304	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1695	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1696	}
		1697	else
		1698	((WT)w)->at = w->offset;
1305		1699
1306	ev_start (EV_A_ (W)w, ++periodiccnt);	1700	ev_start (EV_A_ (W)w, ++periodiccnt);
1307	array_needsize (periodics, periodicmax, periodiccnt, (void));	1701	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1308	periodics [periodiccnt - 1] = w;	1702	periodics [periodiccnt - 1] = w;
1309	upheap ((WT *)periodics, periodiccnt - 1);	1703	upheap ((WT *)periodics, periodiccnt - 1);
1310		1704
		1705	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1706	}
		1707
		1708	void noinline
		1709	ev_periodic_stop (EV_P_ ev_periodic *w)
		1710	{
		1711	clear_pending (EV_A_ (W)w);
		1712	if (expect_false (!ev_is_active (w)))
		1713	return;
		1714
1311	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1715	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1312	}
1313		1716
1314	void	1717	{
1315	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1718	int active = ((W)w)->active;
1316	{
1317	ev_clear_pending (EV_A_ (W)w);
1318	if (!ev_is_active (w))
1319	return;
1320		1719
1321	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1720	if (expect_true (--active < --periodiccnt))
1322
1323	if (((W)w)->active < periodiccnt--)
1324	{	1721	{
1325	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1722	periodics [active] = periodics [periodiccnt];
1326	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1723	adjustheap ((WT *)periodics, periodiccnt, active);
1327	}	1724	}
		1725	}
1328		1726
1329	ev_stop (EV_A_ (W)w);	1727	ev_stop (EV_A_ (W)w);
1330	}	1728	}
1331		1729
1332	void	1730	void noinline
1333	ev_idle_start (EV_P_ struct ev_idle *w)	1731	ev_periodic_again (EV_P_ ev_periodic *w)
1334	{	1732	{
1335	if (ev_is_active (w))	1733	/* TODO: use adjustheap and recalculation */
1336	return;
1337
1338	ev_start (EV_A_ (W)w, ++idlecnt);
1339	array_needsize (idles, idlemax, idlecnt, (void));
1340	idles [idlecnt - 1] = w;
1341	}
1342
1343	void
1344	ev_idle_stop (EV_P_ struct ev_idle *w)
1345	{
1346	ev_clear_pending (EV_A_ (W)w);
1347	if (ev_is_active (w))
1348	return;
1349
1350	idles [((W)w)->active - 1] = idles [--idlecnt];
1351	ev_stop (EV_A_ (W)w);	1734	ev_periodic_stop (EV_A_ w);
		1735	ev_periodic_start (EV_A_ w);
1352	}	1736	}
1353		1737	#endif
1354	void
1355	ev_prepare_start (EV_P_ struct ev_prepare *w)
1356	{
1357	if (ev_is_active (w))
1358	return;
1359
1360	ev_start (EV_A_ (W)w, ++preparecnt);
1361	array_needsize (prepares, preparemax, preparecnt, (void));
1362	prepares [preparecnt - 1] = w;
1363	}
1364
1365	void
1366	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1367	{
1368	ev_clear_pending (EV_A_ (W)w);
1369	if (ev_is_active (w))
1370	return;
1371
1372	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1373	ev_stop (EV_A_ (W)w);
1374	}
1375
1376	void
1377	ev_check_start (EV_P_ struct ev_check *w)
1378	{
1379	if (ev_is_active (w))
1380	return;
1381
1382	ev_start (EV_A_ (W)w, ++checkcnt);
1383	array_needsize (checks, checkmax, checkcnt, (void));
1384	checks [checkcnt - 1] = w;
1385	}
1386
1387	void
1388	ev_check_stop (EV_P_ struct ev_check *w)
1389	{
1390	ev_clear_pending (EV_A_ (W)w);
1391	if (ev_is_active (w))
1392	return;
1393
1394	checks [((W)w)->active - 1] = checks [--checkcnt];
1395	ev_stop (EV_A_ (W)w);
1396	}
1397		1738
1398	#ifndef SA_RESTART	1739	#ifndef SA_RESTART
1399	# define SA_RESTART 0	1740	# define SA_RESTART 0
1400	#endif	1741	#endif
1401		1742
1402	void	1743	void noinline
1403	ev_signal_start (EV_P_ struct ev_signal *w)	1744	ev_signal_start (EV_P_ ev_signal *w)
1404	{	1745	{
1405	#if EV_MULTIPLICITY	1746	#if EV_MULTIPLICITY
1406	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1747	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1407	#endif	1748	#endif
1408	if (ev_is_active (w))	1749	if (expect_false (ev_is_active (w)))
1409	return;	1750	return;
1410		1751
1411	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1752	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1412		1753
1413	ev_start (EV_A_ (W)w, 1);	1754	ev_start (EV_A_ (W)w, 1);
1414	array_needsize (signals, signalmax, w->signum, signals_init);	1755	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1415	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1756	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1416		1757
1417	if (!((WL)w)->next)	1758	if (!((WL)w)->next)
1418	{	1759	{
1419	#if WIN32	1760	#if _WIN32
1420	signal (w->signum, sighandler);	1761	signal (w->signum, sighandler);
1421	#else	1762	#else
1422	struct sigaction sa;	1763	struct sigaction sa;
1423	sa.sa_handler = sighandler;	1764	sa.sa_handler = sighandler;
1424	sigfillset (&sa.sa_mask);	1765	sigfillset (&sa.sa_mask);
…		…
1426	sigaction (w->signum, &sa, 0);	1767	sigaction (w->signum, &sa, 0);
1427	#endif	1768	#endif
1428	}	1769	}
1429	}	1770	}
1430		1771
1431	void	1772	void noinline
1432	ev_signal_stop (EV_P_ struct ev_signal *w)	1773	ev_signal_stop (EV_P_ ev_signal *w)
1433	{	1774	{
1434	ev_clear_pending (EV_A_ (W)w);	1775	clear_pending (EV_A_ (W)w);
1435	if (!ev_is_active (w))	1776	if (expect_false (!ev_is_active (w)))
1436	return;	1777	return;
1437		1778
1438	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1779	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1439	ev_stop (EV_A_ (W)w);	1780	ev_stop (EV_A_ (W)w);
1440		1781
1441	if (!signals [w->signum - 1].head)	1782	if (!signals [w->signum - 1].head)
1442	signal (w->signum, SIG_DFL);	1783	signal (w->signum, SIG_DFL);
1443	}	1784	}
1444		1785
1445	void	1786	void
1446	ev_child_start (EV_P_ struct ev_child *w)	1787	ev_child_start (EV_P_ ev_child *w)
1447	{	1788	{
1448	#if EV_MULTIPLICITY	1789	#if EV_MULTIPLICITY
1449	assert (("child watchers are only supported in the default loop", loop == default_loop));	1790	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1450	#endif	1791	#endif
1451	if (ev_is_active (w))	1792	if (expect_false (ev_is_active (w)))
1452	return;	1793	return;
1453		1794
1454	ev_start (EV_A_ (W)w, 1);	1795	ev_start (EV_A_ (W)w, 1);
1455	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1796	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1456	}	1797	}
1457		1798
1458	void	1799	void
1459	ev_child_stop (EV_P_ struct ev_child *w)	1800	ev_child_stop (EV_P_ ev_child *w)
1460	{	1801	{
1461	ev_clear_pending (EV_A_ (W)w);	1802	clear_pending (EV_A_ (W)w);
1462	if (ev_is_active (w))	1803	if (expect_false (!ev_is_active (w)))
1463	return;	1804	return;
1464		1805
1465	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1806	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1466	ev_stop (EV_A_ (W)w);	1807	ev_stop (EV_A_ (W)w);
1467	}	1808	}
1468		1809
		1810	#if EV_STAT_ENABLE
		1811
		1812	# ifdef _WIN32
		1813	# undef lstat
		1814	# define lstat(a,b) _stati64 (a,b)
		1815	# endif
		1816
		1817	#define DEF_STAT_INTERVAL 5.0074891
		1818	#define MIN_STAT_INTERVAL 0.1074891
		1819
		1820	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1821
		1822	#if EV_USE_INOTIFY
		1823	# define EV_INOTIFY_BUFSIZE 8192
		1824
		1825	static void noinline
		1826	infy_add (EV_P_ ev_stat *w)
		1827	{
		1828	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);
		1829
		1830	if (w->wd < 0)
		1831	{
		1832	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1833
		1834	/* monitor some parent directory for speedup hints */
		1835	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1836	{
		1837	char path [4096];
		1838	strcpy (path, w->path);
		1839
		1840	do
		1841	{
		1842	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1843	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1844
		1845	char *pend = strrchr (path, '/');
		1846
		1847	if (!pend)
		1848	break; /* whoops, no '/', complain to your admin */
		1849
		1850	*pend = 0;
		1851	w->wd = inotify_add_watch (fs_fd, path, mask);
		1852	}
		1853	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1854	}
		1855	}
		1856	else
		1857	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1858
		1859	if (w->wd >= 0)
		1860	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1861	}
		1862
		1863	static void noinline
		1864	infy_del (EV_P_ ev_stat *w)
		1865	{
		1866	int slot;
		1867	int wd = w->wd;
		1868
		1869	if (wd < 0)
		1870	return;
		1871
		1872	w->wd = -2;
		1873	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1874	wlist_del (&fs_hash [slot].head, (WL)w);
		1875
		1876	/* remove this watcher, if others are watching it, they will rearm */
		1877	inotify_rm_watch (fs_fd, wd);
		1878	}
		1879
		1880	static void noinline
		1881	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1882	{
		1883	if (slot < 0)
		1884	/* overflow, need to check for all hahs slots */
		1885	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1886	infy_wd (EV_A_ slot, wd, ev);
		1887	else
		1888	{
		1889	WL w_;
		1890
		1891	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1892	{
		1893	ev_stat *w = (ev_stat *)w_;
		1894	w_ = w_->next; /* lets us remove this watcher and all before it */
		1895
		1896	if (w->wd == wd || wd == -1)
		1897	{
		1898	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1899	{
		1900	w->wd = -1;
		1901	infy_add (EV_A_ w); /* re-add, no matter what */
		1902	}
		1903
		1904	stat_timer_cb (EV_A_ &w->timer, 0);
		1905	}
		1906	}
		1907	}
		1908	}
		1909
		1910	static void
		1911	infy_cb (EV_P_ ev_io *w, int revents)
		1912	{
		1913	char buf [EV_INOTIFY_BUFSIZE];
		1914	struct inotify_event *ev = (struct inotify_event *)buf;
		1915	int ofs;
		1916	int len = read (fs_fd, buf, sizeof (buf));
		1917
		1918	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1919	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1920	}
		1921
		1922	void inline_size
		1923	infy_init (EV_P)
		1924	{
		1925	if (fs_fd != -2)
		1926	return;
		1927
		1928	fs_fd = inotify_init ();
		1929
		1930	if (fs_fd >= 0)
		1931	{
		1932	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1933	ev_set_priority (&fs_w, EV_MAXPRI);
		1934	ev_io_start (EV_A_ &fs_w);
		1935	}
		1936	}
		1937
		1938	void inline_size
		1939	infy_fork (EV_P)
		1940	{
		1941	int slot;
		1942
		1943	if (fs_fd < 0)
		1944	return;
		1945
		1946	close (fs_fd);
		1947	fs_fd = inotify_init ();
		1948
		1949	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1950	{
		1951	WL w_ = fs_hash [slot].head;
		1952	fs_hash [slot].head = 0;
		1953
		1954	while (w_)
		1955	{
		1956	ev_stat *w = (ev_stat *)w_;
		1957	w_ = w_->next; /* lets us add this watcher */
		1958
		1959	w->wd = -1;
		1960
		1961	if (fs_fd >= 0)
		1962	infy_add (EV_A_ w); /* re-add, no matter what */
		1963	else
		1964	ev_timer_start (EV_A_ &w->timer);
		1965	}
		1966
		1967	}
		1968	}
		1969
		1970	#endif
		1971
		1972	void
		1973	ev_stat_stat (EV_P_ ev_stat *w)
		1974	{
		1975	if (lstat (w->path, &w->attr) < 0)
		1976	w->attr.st_nlink = 0;
		1977	else if (!w->attr.st_nlink)
		1978	w->attr.st_nlink = 1;
		1979	}
		1980
		1981	static void noinline
		1982	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1983	{
		1984	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1985
		1986	/* we copy this here each the time so that */
		1987	/* prev has the old value when the callback gets invoked */
		1988	w->prev = w->attr;
		1989	ev_stat_stat (EV_A_ w);
		1990
		1991	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1992	if (
		1993	w->prev.st_dev != w->attr.st_dev
		1994	|| w->prev.st_ino != w->attr.st_ino
		1995	|| w->prev.st_mode != w->attr.st_mode
		1996	|| w->prev.st_nlink != w->attr.st_nlink
		1997	|| w->prev.st_uid != w->attr.st_uid
		1998	|| w->prev.st_gid != w->attr.st_gid
		1999	|| w->prev.st_rdev != w->attr.st_rdev
		2000	|| w->prev.st_size != w->attr.st_size
		2001	|| w->prev.st_atime != w->attr.st_atime
		2002	|| w->prev.st_mtime != w->attr.st_mtime
		2003	|| w->prev.st_ctime != w->attr.st_ctime
		2004	) {
		2005	#if EV_USE_INOTIFY
		2006	infy_del (EV_A_ w);
		2007	infy_add (EV_A_ w);
		2008	ev_stat_stat (EV_A_ w); /* avoid race... */
		2009	#endif
		2010
		2011	ev_feed_event (EV_A_ w, EV_STAT);
		2012	}
		2013	}
		2014
		2015	void
		2016	ev_stat_start (EV_P_ ev_stat *w)
		2017	{
		2018	if (expect_false (ev_is_active (w)))
		2019	return;
		2020
		2021	/* since we use memcmp, we need to clear any padding data etc. */
		2022	memset (&w->prev, 0, sizeof (ev_statdata));
		2023	memset (&w->attr, 0, sizeof (ev_statdata));
		2024
		2025	ev_stat_stat (EV_A_ w);
		2026
		2027	if (w->interval < MIN_STAT_INTERVAL)
		2028	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2029
		2030	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2031	ev_set_priority (&w->timer, ev_priority (w));
		2032
		2033	#if EV_USE_INOTIFY
		2034	infy_init (EV_A);
		2035
		2036	if (fs_fd >= 0)
		2037	infy_add (EV_A_ w);
		2038	else
		2039	#endif
		2040	ev_timer_start (EV_A_ &w->timer);
		2041
		2042	ev_start (EV_A_ (W)w, 1);
		2043	}
		2044
		2045	void
		2046	ev_stat_stop (EV_P_ ev_stat *w)
		2047	{
		2048	clear_pending (EV_A_ (W)w);
		2049	if (expect_false (!ev_is_active (w)))
		2050	return;
		2051
		2052	#if EV_USE_INOTIFY
		2053	infy_del (EV_A_ w);
		2054	#endif
		2055	ev_timer_stop (EV_A_ &w->timer);
		2056
		2057	ev_stop (EV_A_ (W)w);
		2058	}
		2059	#endif
		2060
		2061	#if EV_IDLE_ENABLE
		2062	void
		2063	ev_idle_start (EV_P_ ev_idle *w)
		2064	{
		2065	if (expect_false (ev_is_active (w)))
		2066	return;
		2067
		2068	pri_adjust (EV_A_ (W)w);
		2069
		2070	{
		2071	int active = ++idlecnt [ABSPRI (w)];
		2072
		2073	++idleall;
		2074	ev_start (EV_A_ (W)w, active);
		2075
		2076	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2077	idles [ABSPRI (w)][active - 1] = w;
		2078	}
		2079	}
		2080
		2081	void
		2082	ev_idle_stop (EV_P_ ev_idle *w)
		2083	{
		2084	clear_pending (EV_A_ (W)w);
		2085	if (expect_false (!ev_is_active (w)))
		2086	return;
		2087
		2088	{
		2089	int active = ((W)w)->active;
		2090
		2091	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2092	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2093
		2094	ev_stop (EV_A_ (W)w);
		2095	--idleall;
		2096	}
		2097	}
		2098	#endif
		2099
		2100	void
		2101	ev_prepare_start (EV_P_ ev_prepare *w)
		2102	{
		2103	if (expect_false (ev_is_active (w)))
		2104	return;
		2105
		2106	ev_start (EV_A_ (W)w, ++preparecnt);
		2107	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2108	prepares [preparecnt - 1] = w;
		2109	}
		2110
		2111	void
		2112	ev_prepare_stop (EV_P_ ev_prepare *w)
		2113	{
		2114	clear_pending (EV_A_ (W)w);
		2115	if (expect_false (!ev_is_active (w)))
		2116	return;
		2117
		2118	{
		2119	int active = ((W)w)->active;
		2120	prepares [active - 1] = prepares [--preparecnt];
		2121	((W)prepares [active - 1])->active = active;
		2122	}
		2123
		2124	ev_stop (EV_A_ (W)w);
		2125	}
		2126
		2127	void
		2128	ev_check_start (EV_P_ ev_check *w)
		2129	{
		2130	if (expect_false (ev_is_active (w)))
		2131	return;
		2132
		2133	ev_start (EV_A_ (W)w, ++checkcnt);
		2134	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2135	checks [checkcnt - 1] = w;
		2136	}
		2137
		2138	void
		2139	ev_check_stop (EV_P_ ev_check *w)
		2140	{
		2141	clear_pending (EV_A_ (W)w);
		2142	if (expect_false (!ev_is_active (w)))
		2143	return;
		2144
		2145	{
		2146	int active = ((W)w)->active;
		2147	checks [active - 1] = checks [--checkcnt];
		2148	((W)checks [active - 1])->active = active;
		2149	}
		2150
		2151	ev_stop (EV_A_ (W)w);
		2152	}
		2153
		2154	#if EV_EMBED_ENABLE
		2155	void noinline
		2156	ev_embed_sweep (EV_P_ ev_embed *w)
		2157	{
		2158	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2159	}
		2160
		2161	static void
		2162	embed_cb (EV_P_ ev_io *io, int revents)
		2163	{
		2164	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2165
		2166	if (ev_cb (w))
		2167	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2168	else
		2169	ev_embed_sweep (loop, w);
		2170	}
		2171
		2172	void
		2173	ev_embed_start (EV_P_ ev_embed *w)
		2174	{
		2175	if (expect_false (ev_is_active (w)))
		2176	return;
		2177
		2178	{
		2179	struct ev_loop *loop = w->loop;
		2180	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2181	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2182	}
		2183
		2184	ev_set_priority (&w->io, ev_priority (w));
		2185	ev_io_start (EV_A_ &w->io);
		2186
		2187	ev_start (EV_A_ (W)w, 1);
		2188	}
		2189
		2190	void
		2191	ev_embed_stop (EV_P_ ev_embed *w)
		2192	{
		2193	clear_pending (EV_A_ (W)w);
		2194	if (expect_false (!ev_is_active (w)))
		2195	return;
		2196
		2197	ev_io_stop (EV_A_ &w->io);
		2198
		2199	ev_stop (EV_A_ (W)w);
		2200	}
		2201	#endif
		2202
		2203	#if EV_FORK_ENABLE
		2204	void
		2205	ev_fork_start (EV_P_ ev_fork *w)
		2206	{
		2207	if (expect_false (ev_is_active (w)))
		2208	return;
		2209
		2210	ev_start (EV_A_ (W)w, ++forkcnt);
		2211	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2212	forks [forkcnt - 1] = w;
		2213	}
		2214
		2215	void
		2216	ev_fork_stop (EV_P_ ev_fork *w)
		2217	{
		2218	clear_pending (EV_A_ (W)w);
		2219	if (expect_false (!ev_is_active (w)))
		2220	return;
		2221
		2222	{
		2223	int active = ((W)w)->active;
		2224	forks [active - 1] = forks [--forkcnt];
		2225	((W)forks [active - 1])->active = active;
		2226	}
		2227
		2228	ev_stop (EV_A_ (W)w);
		2229	}
		2230	#endif
		2231
1469	/*****************************************************************************/	2232	/*****************************************************************************/
1470		2233
1471	struct ev_once	2234	struct ev_once
1472	{	2235	{
1473	struct ev_io io;	2236	ev_io io;
1474	struct ev_timer to;	2237	ev_timer to;
1475	void (*cb)(int revents, void *arg);	2238	void (*cb)(int revents, void *arg);
1476	void *arg;	2239	void *arg;
1477	};	2240	};
1478		2241
1479	static void	2242	static void
…		…
1488		2251
1489	cb (revents, arg);	2252	cb (revents, arg);
1490	}	2253	}
1491		2254
1492	static void	2255	static void
1493	once_cb_io (EV_P_ struct ev_io *w, int revents)	2256	once_cb_io (EV_P_ ev_io *w, int revents)
1494	{	2257	{
1495	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2258	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1496	}	2259	}
1497		2260
1498	static void	2261	static void
1499	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2262	once_cb_to (EV_P_ ev_timer *w, int revents)
1500	{	2263	{
1501	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2264	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1502	}	2265	}
1503		2266
1504	void	2267	void
1505	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2268	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1506	{	2269	{
1507	struct ev_once *once = ev_malloc (sizeof (struct ev_once));	2270	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1508		2271
1509	if (!once)	2272	if (expect_false (!once))
		2273	{
1510	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2274	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1511	else	2275	return;
1512	{	2276	}
		2277
1513	once->cb = cb;	2278	once->cb = cb;
1514	once->arg = arg;	2279	once->arg = arg;
1515		2280
1516	ev_watcher_init (&once->io, once_cb_io);	2281	ev_init (&once->io, once_cb_io);
1517	if (fd >= 0)	2282	if (fd >= 0)
1518	{	2283	{
1519	ev_io_set (&once->io, fd, events);	2284	ev_io_set (&once->io, fd, events);
1520	ev_io_start (EV_A_ &once->io);	2285	ev_io_start (EV_A_ &once->io);
1521	}	2286	}
1522		2287
1523	ev_watcher_init (&once->to, once_cb_to);	2288	ev_init (&once->to, once_cb_to);
1524	if (timeout >= 0.)	2289	if (timeout >= 0.)
1525	{	2290	{
1526	ev_timer_set (&once->to, timeout, 0.);	2291	ev_timer_set (&once->to, timeout, 0.);
1527	ev_timer_start (EV_A_ &once->to);	2292	ev_timer_start (EV_A_ &once->to);
1528	}
1529	}	2293	}
1530	}	2294	}
1531		2295
		2296	#ifdef __cplusplus
		2297	}
		2298	#endif
		2299

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