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Comparing libev/ev.c (file contents):
Revision 1.69 by root, Tue Nov 6 00:10:04 2007 UTC vs.
Revision 1.155 by root, Wed Nov 28 17:32:24 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>
58	#include <stdlib.h>	110	#include <stdlib.h>
59	#include <unistd.h>
60	#include <fcntl.h>	111	#include <fcntl.h>
61	#include <signal.h>
62	#include <stddef.h>	112	#include <stddef.h>
63		113
64	#include <stdio.h>	114	#include <stdio.h>
65		115
66	#include <assert.h>	116	#include <assert.h>
67	#include <errno.h>	117	#include <errno.h>
68	#include <sys/types.h>	118	#include <sys/types.h>
		119	#include <time.h>
		120
		121	#include <signal.h>
		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
69	#ifndef WIN32	129	#ifndef _WIN32
		130	# include <sys/time.h>
70	# 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
71	#endif	138	# endif
72	#include <sys/time.h>	139	#endif
73	#include <time.h>
74		140
75	/**/	141	/**/
76		142
77	#ifndef EV_USE_MONOTONIC	143	#ifndef EV_USE_MONOTONIC
78	# 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
79	#endif	149	#endif
80		150
81	#ifndef EV_USE_SELECT	151	#ifndef EV_USE_SELECT
82	# define EV_USE_SELECT 1	152	# define EV_USE_SELECT 1
83	#endif	153	#endif
84		154
85	#ifndef EV_USE_POLL	155	#ifndef EV_USE_POLL
86	# 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
87	#endif	161	#endif
88		162
89	#ifndef EV_USE_EPOLL	163	#ifndef EV_USE_EPOLL
90	# define EV_USE_EPOLL 0	164	# define EV_USE_EPOLL 0
91	#endif	165	#endif
92		166
93	#ifndef EV_USE_KQUEUE	167	#ifndef EV_USE_KQUEUE
94	# define EV_USE_KQUEUE 0	168	# define EV_USE_KQUEUE 0
95	#endif	169	#endif
96		170
		171	#ifndef EV_USE_PORT
		172	# define EV_USE_PORT 0
		173	#endif
		174
97	#ifndef EV_USE_WIN32	175	#ifndef EV_USE_INOTIFY
98	# ifdef WIN32	176	# define EV_USE_INOTIFY 0
99	# define EV_USE_WIN32 1	177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
100	# else	182	# else
101	# define EV_USE_WIN32 0	183	# define EV_PID_HASHSIZE 16
102	# endif	184	# endif
103	#endif	185	#endif
104		186
105	#ifndef EV_USE_REALTIME	187	#ifndef EV_INOTIFY_HASHSIZE
106	# 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
107	#endif	193	#endif
108		194
109	/**/	195	/**/
110		196
111	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
…		…
116	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
117	# undef EV_USE_REALTIME	203	# undef EV_USE_REALTIME
118	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
119	#endif	205	#endif
120		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
121	/**/	219	/**/
122		220
123	#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) */
124	#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) */
125	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
126	/*#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 */
127
128	#include "ev.h"
129		224
130	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
131	# define expect(expr,value) __builtin_expect ((expr),(value))	226	# define expect(expr,value) __builtin_expect ((expr),(value))
		227	# define inline_size static inline /* inline for codesize */
		228	# if EV_MINIMAL
132	# define inline inline	229	# define noinline __attribute__ ((noinline))
		230	# define inline_speed static noinline
		231	# else
		232	# define noinline
		233	# define inline_speed static inline
		234	# endif
133	#else	235	#else
134	# define expect(expr,value) (expr)	236	# define expect(expr,value) (expr)
		237	# define inline_speed static
135	# define inline static	238	# define inline_size static
		239	# define noinline
136	#endif	240	#endif
137		241
138	#define expect_false(expr) expect ((expr) != 0, 0)	242	#define expect_false(expr) expect ((expr) != 0, 0)
139	#define expect_true(expr) expect ((expr) != 0, 1)	243	#define expect_true(expr) expect ((expr) != 0, 1)
140		244
141	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	246	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
143		247
		248	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		249	#define EMPTY2(a,b) /* used to suppress some warnings */
		250
144	typedef struct ev_watcher *W;	251	typedef ev_watcher *W;
145	typedef struct ev_watcher_list *WL;	252	typedef ev_watcher_list *WL;
146	typedef struct ev_watcher_time *WT;	253	typedef ev_watcher_time *WT;
147		254
148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149		256
150	#if WIN32	257	#ifdef _WIN32
151	/* note: the comment below could not be substantiated, but what would I care */	258	# include "ev_win32.c"
152	/* MSDN says this is required to handle SIGFPE */
153	volatile double SIGFPE_REQ = 0.0f;
154	#endif	259	#endif
155		260
156	/*****************************************************************************/	261	/*****************************************************************************/
157		262
158	static void (*syserr_cb)(void);	263	static void (*syserr_cb)(const char *msg);
159		264
160	void ev_set_syserr_cb (void (*cb)(void))	265	void
		266	ev_set_syserr_cb (void (*cb)(const char *msg))
161	{	267	{
162	syserr_cb = cb;	268	syserr_cb = cb;
163	}	269	}
164		270
165	static void	271	static void noinline
166	syserr (void)	272	syserr (const char *msg)
167	{	273	{
		274	if (!msg)
		275	msg = "(libev) system error";
		276
168	if (syserr_cb)	277	if (syserr_cb)
169	syserr_cb ();	278	syserr_cb (msg);
170	else	279	else
171	{	280	{
172	perror ("libev");	281	perror (msg);
173	abort ();	282	abort ();
174	}	283	}
175	}	284	}
176		285
177	static void *(*alloc)(void *ptr, long size);	286	static void *(*alloc)(void *ptr, long size);
178		287
		288	void
179	void ev_set_allocator (void *(*cb)(void *ptr, long size))	289	ev_set_allocator (void *(*cb)(void *ptr, long size))
180	{	290	{
181	alloc = cb;	291	alloc = cb;
182	}	292	}
183		293
184	static void *	294	inline_speed void *
185	ev_realloc (void *ptr, long size)	295	ev_realloc (void *ptr, long size)
186	{	296	{
187	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	297	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
188		298
189	if (!ptr && size)	299	if (!ptr && size)
…		…
203	typedef struct	313	typedef struct
204	{	314	{
205	WL head;	315	WL head;
206	unsigned char events;	316	unsigned char events;
207	unsigned char reify;	317	unsigned char reify;
		318	#if EV_SELECT_IS_WINSOCKET
		319	SOCKET handle;
		320	#endif
208	} ANFD;	321	} ANFD;
209		322
210	typedef struct	323	typedef struct
211	{	324	{
212	W w;	325	W w;
213	int events;	326	int events;
214	} ANPENDING;	327	} ANPENDING;
215		328
		329	#if EV_USE_INOTIFY
		330	typedef struct
		331	{
		332	WL head;
		333	} ANFS;
		334	#endif
		335
216	#if EV_MULTIPLICITY	336	#if EV_MULTIPLICITY
217		337
218	struct ev_loop	338	struct ev_loop
219	{	339	{
		340	ev_tstamp ev_rt_now;
		341	#define ev_rt_now ((loop)->ev_rt_now)
220	# define VAR(name,decl) decl;	342	#define VAR(name,decl) decl;
221	# include "ev_vars.h"	343	#include "ev_vars.h"
222	};
223	# undef VAR	344	#undef VAR
		345	};
224	# include "ev_wrap.h"	346	#include "ev_wrap.h"
		347
		348	static struct ev_loop default_loop_struct;
		349	struct ev_loop *ev_default_loop_ptr;
225		350
226	#else	351	#else
227		352
		353	ev_tstamp ev_rt_now;
228	# define VAR(name,decl) static decl;	354	#define VAR(name,decl) static decl;
229	# include "ev_vars.h"	355	#include "ev_vars.h"
230	# undef VAR	356	#undef VAR
		357
		358	static int ev_default_loop_ptr;
231		359
232	#endif	360	#endif
233		361
234	/*****************************************************************************/	362	/*****************************************************************************/
235		363
236	inline ev_tstamp	364	ev_tstamp
237	ev_time (void)	365	ev_time (void)
238	{	366	{
239	#if EV_USE_REALTIME	367	#if EV_USE_REALTIME
240	struct timespec ts;	368	struct timespec ts;
241	clock_gettime (CLOCK_REALTIME, &ts);	369	clock_gettime (CLOCK_REALTIME, &ts);
…		…
245	gettimeofday (&tv, 0);	373	gettimeofday (&tv, 0);
246	return tv.tv_sec + tv.tv_usec * 1e-6;	374	return tv.tv_sec + tv.tv_usec * 1e-6;
247	#endif	375	#endif
248	}	376	}
249		377
250	inline ev_tstamp	378	ev_tstamp inline_size
251	get_clock (void)	379	get_clock (void)
252	{	380	{
253	#if EV_USE_MONOTONIC	381	#if EV_USE_MONOTONIC
254	if (expect_true (have_monotonic))	382	if (expect_true (have_monotonic))
255	{	383	{
…		…
260	#endif	388	#endif
261		389
262	return ev_time ();	390	return ev_time ();
263	}	391	}
264		392
		393	#if EV_MULTIPLICITY
265	ev_tstamp	394	ev_tstamp
266	ev_now (EV_P)	395	ev_now (EV_P)
267	{	396	{
268	return rt_now;	397	return ev_rt_now;
269	}	398	}
		399	#endif
270		400
271	#define array_roundsize(base,n) ((n) | 4 & ~3)	401	#define array_roundsize(type,n) (((n) | 4) & ~3)
272		402
273	#define array_needsize(base,cur,cnt,init) \	403	#define array_needsize(type,base,cur,cnt,init) \
274	if (expect_false ((cnt) > cur)) \	404	if (expect_false ((cnt) > cur)) \
275	{ \	405	{ \
276	int newcnt = cur; \	406	int newcnt = cur; \
277	do \	407	do \
278	{ \	408	{ \
279	newcnt = array_roundsize (base, newcnt << 1); \	409	newcnt = array_roundsize (type, newcnt << 1); \
280	} \	410	} \
281	while ((cnt) > newcnt); \	411	while ((cnt) > newcnt); \
282	\	412	\
283	base = ev_realloc (base, sizeof (*base) * (newcnt)); \	413	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
284	init (base + cur, newcnt - cur); \	414	init (base + cur, newcnt - cur); \
285	cur = newcnt; \	415	cur = newcnt; \
286	}	416	}
287		417
288	#define array_slim(stem) \	418	#define array_slim(type,stem) \
289	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	419	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
290	{ \	420	{ \
291	stem ## max = array_roundsize (stem ## cnt >> 1); \	421	stem ## max = array_roundsize (stem ## cnt >> 1); \
292	base = ev_realloc (base, sizeof (*base) * (stem ## max)); \	422	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
293	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	423	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
294	}	424	}
295		425
296	#define array_free(stem, idx) \	426	#define array_free(stem, idx) \
297	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	427	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
298		428
299	/*****************************************************************************/	429	/*****************************************************************************/
300		430
301	static void	431	void noinline
		432	ev_feed_event (EV_P_ void *w, int revents)
		433	{
		434	W w_ = (W)w;
		435
		436	if (expect_false (w_->pending))
		437	{
		438	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		439	return;
		440	}
		441
		442	w_->pending = ++pendingcnt [ABSPRI (w_)];
		443	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		444	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		445	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		446	}
		447
		448	void inline_size
		449	queue_events (EV_P_ W *events, int eventcnt, int type)
		450	{
		451	int i;
		452
		453	for (i = 0; i < eventcnt; ++i)
		454	ev_feed_event (EV_A_ events [i], type);
		455	}
		456
		457	/*****************************************************************************/
		458
		459	void inline_size
302	anfds_init (ANFD *base, int count)	460	anfds_init (ANFD *base, int count)
303	{	461	{
304	while (count--)	462	while (count--)
305	{	463	{
306	base->head = 0;	464	base->head = 0;
…		…
309		467
310	++base;	468	++base;
311	}	469	}
312	}	470	}
313		471
314	static void	472	void inline_speed
315	event (EV_P_ W w, int events)
316	{
317	if (w->pending)
318	{
319	pendings [ABSPRI (w)][w->pending - 1].events |= events;
320	return;
321	}
322
323	w->pending = ++pendingcnt [ABSPRI (w)];
324	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
325	pendings [ABSPRI (w)][w->pending - 1].w = w;
326	pendings [ABSPRI (w)][w->pending - 1].events = events;
327	}
328
329	static void
330	queue_events (EV_P_ W *events, int eventcnt, int type)
331	{
332	int i;
333
334	for (i = 0; i < eventcnt; ++i)
335	event (EV_A_ events [i], type);
336	}
337
338	static void
339	fd_event (EV_P_ int fd, int events)	473	fd_event (EV_P_ int fd, int revents)
340	{	474	{
341	ANFD *anfd = anfds + fd;	475	ANFD *anfd = anfds + fd;
342	struct ev_io *w;	476	ev_io *w;
343		477
344	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	478	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
345	{	479	{
346	int ev = w->events & events;	480	int ev = w->events & revents;
347		481
348	if (ev)	482	if (ev)
349	event (EV_A_ (W)w, ev);	483	ev_feed_event (EV_A_ (W)w, ev);
350	}	484	}
351	}	485	}
352		486
353	/*****************************************************************************/	487	void
		488	ev_feed_fd_event (EV_P_ int fd, int revents)
		489	{
		490	fd_event (EV_A_ fd, revents);
		491	}
354		492
355	static void	493	void inline_size
356	fd_reify (EV_P)	494	fd_reify (EV_P)
357	{	495	{
358	int i;	496	int i;
359		497
360	for (i = 0; i < fdchangecnt; ++i)	498	for (i = 0; i < fdchangecnt; ++i)
361	{	499	{
362	int fd = fdchanges [i];	500	int fd = fdchanges [i];
363	ANFD *anfd = anfds + fd;	501	ANFD *anfd = anfds + fd;
364	struct ev_io *w;	502	ev_io *w;
365		503
366	int events = 0;	504	int events = 0;
367		505
368	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	506	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
369	events |= w->events;	507	events |= w->events;
370		508
		509	#if EV_SELECT_IS_WINSOCKET
		510	if (events)
		511	{
		512	unsigned long argp;
		513	anfd->handle = _get_osfhandle (fd);
		514	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		515	}
		516	#endif
		517
371	anfd->reify = 0;	518	anfd->reify = 0;
372		519
373	method_modify (EV_A_ fd, anfd->events, events);	520	backend_modify (EV_A_ fd, anfd->events, events);
374	anfd->events = events;	521	anfd->events = events;
375	}	522	}
376		523
377	fdchangecnt = 0;	524	fdchangecnt = 0;
378	}	525	}
379		526
380	static void	527	void inline_size
381	fd_change (EV_P_ int fd)	528	fd_change (EV_P_ int fd)
382	{	529	{
383	if (anfds [fd].reify || fdchangecnt < 0)	530	if (expect_false (anfds [fd].reify))
384	return;	531	return;
385		532
386	anfds [fd].reify = 1;	533	anfds [fd].reify = 1;
387		534
388	++fdchangecnt;	535	++fdchangecnt;
389	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	536	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
390	fdchanges [fdchangecnt - 1] = fd;	537	fdchanges [fdchangecnt - 1] = fd;
391	}	538	}
392		539
393	static void	540	void inline_speed
394	fd_kill (EV_P_ int fd)	541	fd_kill (EV_P_ int fd)
395	{	542	{
396	struct ev_io *w;	543	ev_io *w;
397		544
398	while ((w = (struct ev_io *)anfds [fd].head))	545	while ((w = (ev_io *)anfds [fd].head))
399	{	546	{
400	ev_io_stop (EV_A_ w);	547	ev_io_stop (EV_A_ w);
401	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	548	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
402	}	549	}
		550	}
		551
		552	int inline_size
		553	fd_valid (int fd)
		554	{
		555	#ifdef _WIN32
		556	return _get_osfhandle (fd) != -1;
		557	#else
		558	return fcntl (fd, F_GETFD) != -1;
		559	#endif
403	}	560	}
404		561
405	/* called on EBADF to verify fds */	562	/* called on EBADF to verify fds */
406	static void	563	static void noinline
407	fd_ebadf (EV_P)	564	fd_ebadf (EV_P)
408	{	565	{
409	int fd;	566	int fd;
410		567
411	for (fd = 0; fd < anfdmax; ++fd)	568	for (fd = 0; fd < anfdmax; ++fd)
412	if (anfds [fd].events)	569	if (anfds [fd].events)
413	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	570	if (!fd_valid (fd) == -1 && errno == EBADF)
414	fd_kill (EV_A_ fd);	571	fd_kill (EV_A_ fd);
415	}	572	}
416		573
417	/* called on ENOMEM in select/poll to kill some fds and retry */	574	/* called on ENOMEM in select/poll to kill some fds and retry */
418	static void	575	static void noinline
419	fd_enomem (EV_P)	576	fd_enomem (EV_P)
420	{	577	{
421	int fd;	578	int fd;
422		579
423	for (fd = anfdmax; fd--; )	580	for (fd = anfdmax; fd--; )
…		…
426	fd_kill (EV_A_ fd);	583	fd_kill (EV_A_ fd);
427	return;	584	return;
428	}	585	}
429	}	586	}
430		587
431	/* susually called after fork if method needs to re-arm all fds from scratch */	588	/* usually called after fork if backend needs to re-arm all fds from scratch */
432	static void	589	static void noinline
433	fd_rearm_all (EV_P)	590	fd_rearm_all (EV_P)
434	{	591	{
435	int fd;	592	int fd;
436		593
437	/* this should be highly optimised to not do anything but set a flag */	594	/* this should be highly optimised to not do anything but set a flag */
…		…
443	}	600	}
444	}	601	}
445		602
446	/*****************************************************************************/	603	/*****************************************************************************/
447		604
448	static void	605	void inline_speed
449	upheap (WT *heap, int k)	606	upheap (WT *heap, int k)
450	{	607	{
451	WT w = heap [k];	608	WT w = heap [k];
452		609
453	while (k && heap [k >> 1]->at > w->at)	610	while (k && heap [k >> 1]->at > w->at)
…		…
460	heap [k] = w;	617	heap [k] = w;
461	((W)heap [k])->active = k + 1;	618	((W)heap [k])->active = k + 1;
462		619
463	}	620	}
464		621
465	static void	622	void inline_speed
466	downheap (WT *heap, int N, int k)	623	downheap (WT *heap, int N, int k)
467	{	624	{
468	WT w = heap [k];	625	WT w = heap [k];
469		626
470	while (k < (N >> 1))	627	while (k < (N >> 1))
…		…
484		641
485	heap [k] = w;	642	heap [k] = w;
486	((W)heap [k])->active = k + 1;	643	((W)heap [k])->active = k + 1;
487	}	644	}
488		645
		646	void inline_size
		647	adjustheap (WT *heap, int N, int k)
		648	{
		649	upheap (heap, k);
		650	downheap (heap, N, k);
		651	}
		652
489	/*****************************************************************************/	653	/*****************************************************************************/
490		654
491	typedef struct	655	typedef struct
492	{	656	{
493	WL head;	657	WL head;
…		…
497	static ANSIG *signals;	661	static ANSIG *signals;
498	static int signalmax;	662	static int signalmax;
499		663
500	static int sigpipe [2];	664	static int sigpipe [2];
501	static sig_atomic_t volatile gotsig;	665	static sig_atomic_t volatile gotsig;
502	static struct ev_io sigev;	666	static ev_io sigev;
503		667
504	static void	668	void inline_size
505	signals_init (ANSIG *base, int count)	669	signals_init (ANSIG *base, int count)
506	{	670	{
507	while (count--)	671	while (count--)
508	{	672	{
509	base->head = 0;	673	base->head = 0;
…		…
514	}	678	}
515		679
516	static void	680	static void
517	sighandler (int signum)	681	sighandler (int signum)
518	{	682	{
519	#if WIN32	683	#if _WIN32
520	signal (signum, sighandler);	684	signal (signum, sighandler);
521	#endif	685	#endif
522		686
523	signals [signum - 1].gotsig = 1;	687	signals [signum - 1].gotsig = 1;
524		688
…		…
529	write (sigpipe [1], &signum, 1);	693	write (sigpipe [1], &signum, 1);
530	errno = old_errno;	694	errno = old_errno;
531	}	695	}
532	}	696	}
533		697
		698	void noinline
		699	ev_feed_signal_event (EV_P_ int signum)
		700	{
		701	WL w;
		702
		703	#if EV_MULTIPLICITY
		704	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		705	#endif
		706
		707	--signum;
		708
		709	if (signum < 0 || signum >= signalmax)
		710	return;
		711
		712	signals [signum].gotsig = 0;
		713
		714	for (w = signals [signum].head; w; w = w->next)
		715	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		716	}
		717
534	static void	718	static void
535	sigcb (EV_P_ struct ev_io *iow, int revents)	719	sigcb (EV_P_ ev_io *iow, int revents)
536	{	720	{
537	WL w;
538	int signum;	721	int signum;
539		722
540	read (sigpipe [0], &revents, 1);	723	read (sigpipe [0], &revents, 1);
541	gotsig = 0;	724	gotsig = 0;
542		725
543	for (signum = signalmax; signum--; )	726	for (signum = signalmax; signum--; )
544	if (signals [signum].gotsig)	727	if (signals [signum].gotsig)
545	{	728	ev_feed_signal_event (EV_A_ signum + 1);
546	signals [signum].gotsig = 0;
547
548	for (w = signals [signum].head; w; w = w->next)
549	event (EV_A_ (W)w, EV_SIGNAL);
550	}
551	}	729	}
552		730
553	static void	731	void inline_size
		732	fd_intern (int fd)
		733	{
		734	#ifdef _WIN32
		735	int arg = 1;
		736	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		737	#else
		738	fcntl (fd, F_SETFD, FD_CLOEXEC);
		739	fcntl (fd, F_SETFL, O_NONBLOCK);
		740	#endif
		741	}
		742
		743	static void noinline
554	siginit (EV_P)	744	siginit (EV_P)
555	{	745	{
556	#ifndef WIN32	746	fd_intern (sigpipe [0]);
557	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	747	fd_intern (sigpipe [1]);
558	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
559
560	/* rather than sort out wether we really need nb, set it */
561	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
562	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
563	#endif
564		748
565	ev_io_set (&sigev, sigpipe [0], EV_READ);	749	ev_io_set (&sigev, sigpipe [0], EV_READ);
566	ev_io_start (EV_A_ &sigev);	750	ev_io_start (EV_A_ &sigev);
567	ev_unref (EV_A); /* child watcher should not keep loop alive */	751	ev_unref (EV_A); /* child watcher should not keep loop alive */
568	}	752	}
569		753
570	/*****************************************************************************/	754	/*****************************************************************************/
571		755
		756	static ev_child *childs [EV_PID_HASHSIZE];
		757
572	#ifndef WIN32	758	#ifndef _WIN32
573		759
574	static struct ev_child *childs [PID_HASHSIZE];
575	static struct ev_signal childev;	760	static ev_signal childev;
576		761
577	#ifndef WCONTINUED	762	void inline_speed
578	# define WCONTINUED 0
579	#endif
580
581	static void
582	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	763	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
583	{	764	{
584	struct ev_child *w;	765	ev_child *w;
585		766
586	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	767	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
587	if (w->pid == pid || !w->pid)	768	if (w->pid == pid || !w->pid)
588	{	769	{
589	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	770	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
590	w->rpid = pid;	771	w->rpid = pid;
591	w->rstatus = status;	772	w->rstatus = status;
592	event (EV_A_ (W)w, EV_CHILD);	773	ev_feed_event (EV_A_ (W)w, EV_CHILD);
593	}	774	}
594	}	775	}
595		776
		777	#ifndef WCONTINUED
		778	# define WCONTINUED 0
		779	#endif
		780
596	static void	781	static void
597	childcb (EV_P_ struct ev_signal *sw, int revents)	782	childcb (EV_P_ ev_signal *sw, int revents)
598	{	783	{
599	int pid, status;	784	int pid, status;
600		785
		786	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
601	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	787	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
602	{	788	if (!WCONTINUED
		789	|| errno != EINVAL
		790	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		791	return;
		792
603	/* make sure we are called again until all childs have been reaped */	793	/* make sure we are called again until all childs have been reaped */
		794	/* we need to do it this way so that the callback gets called before we continue */
604	event (EV_A_ (W)sw, EV_SIGNAL);	795	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
605		796
606	child_reap (EV_A_ sw, pid, pid, status);	797	child_reap (EV_A_ sw, pid, pid, status);
		798	if (EV_PID_HASHSIZE > 1)
607	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	799	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
608	}
609	}	800	}
610		801
611	#endif	802	#endif
612		803
613	/*****************************************************************************/	804	/*****************************************************************************/
614		805
		806	#if EV_USE_PORT
		807	# include "ev_port.c"
		808	#endif
615	#if EV_USE_KQUEUE	809	#if EV_USE_KQUEUE
616	# include "ev_kqueue.c"	810	# include "ev_kqueue.c"
617	#endif	811	#endif
618	#if EV_USE_EPOLL	812	#if EV_USE_EPOLL
619	# include "ev_epoll.c"	813	# include "ev_epoll.c"
…		…
636	{	830	{
637	return EV_VERSION_MINOR;	831	return EV_VERSION_MINOR;
638	}	832	}
639		833
640	/* return true if we are running with elevated privileges and should ignore env variables */	834	/* return true if we are running with elevated privileges and should ignore env variables */
641	static int	835	int inline_size
642	enable_secure (void)	836	enable_secure (void)
643	{	837	{
644	#ifdef WIN32	838	#ifdef _WIN32
645	return 0;	839	return 0;
646	#else	840	#else
647	return getuid () != geteuid ()	841	return getuid () != geteuid ()
648	|| getgid () != getegid ();	842	|| getgid () != getegid ();
649	#endif	843	#endif
650	}	844	}
651		845
652	int	846	unsigned int
653	ev_method (EV_P)	847	ev_supported_backends (void)
654	{	848	{
655	return method;	849	unsigned int flags = 0;
656	}
657		850
658	static void	851	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
659	loop_init (EV_P_ int methods)	852	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		853	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		854	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		855	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		856
		857	return flags;
		858	}
		859
		860	unsigned int
		861	ev_recommended_backends (void)
660	{	862	{
661	if (!method)	863	unsigned int flags = ev_supported_backends ();
		864
		865	#ifndef __NetBSD__
		866	/* kqueue is borked on everything but netbsd apparently */
		867	/* it usually doesn't work correctly on anything but sockets and pipes */
		868	flags &= ~EVBACKEND_KQUEUE;
		869	#endif
		870	#ifdef __APPLE__
		871	// flags &= ~EVBACKEND_KQUEUE; for documentation
		872	flags &= ~EVBACKEND_POLL;
		873	#endif
		874
		875	return flags;
		876	}
		877
		878	unsigned int
		879	ev_embeddable_backends (void)
		880	{
		881	return EVBACKEND_EPOLL
		882	| EVBACKEND_KQUEUE
		883	| EVBACKEND_PORT;
		884	}
		885
		886	unsigned int
		887	ev_backend (EV_P)
		888	{
		889	return backend;
		890	}
		891
		892	static void noinline
		893	loop_init (EV_P_ unsigned int flags)
		894	{
		895	if (!backend)
662	{	896	{
663	#if EV_USE_MONOTONIC	897	#if EV_USE_MONOTONIC
664	{	898	{
665	struct timespec ts;	899	struct timespec ts;
666	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	900	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
667	have_monotonic = 1;	901	have_monotonic = 1;
668	}	902	}
669	#endif	903	#endif
670		904
671	rt_now = ev_time ();	905	ev_rt_now = ev_time ();
672	mn_now = get_clock ();	906	mn_now = get_clock ();
673	now_floor = mn_now;	907	now_floor = mn_now;
674	rtmn_diff = rt_now - mn_now;	908	rtmn_diff = ev_rt_now - mn_now;
675		909
676	if (methods == EVMETHOD_AUTO)	910	if (!(flags & EVFLAG_NOENV)
677	if (!enable_secure () && getenv ("LIBEV_METHODS"))	911	&& !enable_secure ()
		912	&& getenv ("LIBEV_FLAGS"))
678	methods = atoi (getenv ("LIBEV_METHODS"));	913	flags = atoi (getenv ("LIBEV_FLAGS"));
679	else
680	methods = EVMETHOD_ANY;
681		914
682	method = 0;	915	if (!(flags & 0x0000ffffUL))
		916	flags |= ev_recommended_backends ();
		917
		918	backend = 0;
		919	backend_fd = -1;
683	#if EV_USE_WIN32	920	#if EV_USE_INOTIFY
684	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	921	fs_fd = -2;
		922	#endif
		923
		924	#if EV_USE_PORT
		925	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
685	#endif	926	#endif
686	#if EV_USE_KQUEUE	927	#if EV_USE_KQUEUE
687	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	928	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
688	#endif	929	#endif
689	#if EV_USE_EPOLL	930	#if EV_USE_EPOLL
690	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	931	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
691	#endif	932	#endif
692	#if EV_USE_POLL	933	#if EV_USE_POLL
693	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	934	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
694	#endif	935	#endif
695	#if EV_USE_SELECT	936	#if EV_USE_SELECT
696	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	937	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
697	#endif	938	#endif
698	}
699	}
700		939
701	void	940	ev_init (&sigev, sigcb);
		941	ev_set_priority (&sigev, EV_MAXPRI);
		942	}
		943	}
		944
		945	static void noinline
702	loop_destroy (EV_P)	946	loop_destroy (EV_P)
703	{	947	{
704	int i;	948	int i;
705		949
706	#if EV_USE_WIN32	950	#if EV_USE_INOTIFY
707	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	951	if (fs_fd >= 0)
		952	close (fs_fd);
		953	#endif
		954
		955	if (backend_fd >= 0)
		956	close (backend_fd);
		957
		958	#if EV_USE_PORT
		959	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
708	#endif	960	#endif
709	#if EV_USE_KQUEUE	961	#if EV_USE_KQUEUE
710	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	962	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
711	#endif	963	#endif
712	#if EV_USE_EPOLL	964	#if EV_USE_EPOLL
713	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	965	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
714	#endif	966	#endif
715	#if EV_USE_POLL	967	#if EV_USE_POLL
716	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	968	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
717	#endif	969	#endif
718	#if EV_USE_SELECT	970	#if EV_USE_SELECT
719	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	971	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
720	#endif	972	#endif
721		973
722	for (i = NUMPRI; i--; )	974	for (i = NUMPRI; i--; )
723	array_free (pending, [i]);	975	array_free (pending, [i]);
724		976
		977	/* have to use the microsoft-never-gets-it-right macro */
725	array_free (fdchange, );	978	array_free (fdchange, EMPTY0);
726	array_free (timer, );	979	array_free (timer, EMPTY0);
		980	#if EV_PERIODIC_ENABLE
727	array_free (periodic, );	981	array_free (periodic, EMPTY0);
		982	#endif
728	array_free (idle, );	983	array_free (idle, EMPTY0);
729	array_free (prepare, );	984	array_free (prepare, EMPTY0);
730	array_free (check, );	985	array_free (check, EMPTY0);
731		986
732	method = 0;	987	backend = 0;
733	/*TODO*/
734	}	988	}
735		989
736	void	990	void inline_size infy_fork (EV_P);
		991
		992	void inline_size
737	loop_fork (EV_P)	993	loop_fork (EV_P)
738	{	994	{
739	/*TODO*/	995	#if EV_USE_PORT
		996	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		997	#endif
		998	#if EV_USE_KQUEUE
		999	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1000	#endif
740	#if EV_USE_EPOLL	1001	#if EV_USE_EPOLL
741	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1002	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
742	#endif	1003	#endif
743	#if EV_USE_KQUEUE	1004	#if EV_USE_INOTIFY
744	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1005	infy_fork (EV_A);
745	#endif	1006	#endif
		1007
		1008	if (ev_is_active (&sigev))
		1009	{
		1010	/* default loop */
		1011
		1012	ev_ref (EV_A);
		1013	ev_io_stop (EV_A_ &sigev);
		1014	close (sigpipe [0]);
		1015	close (sigpipe [1]);
		1016
		1017	while (pipe (sigpipe))
		1018	syserr ("(libev) error creating pipe");
		1019
		1020	siginit (EV_A);
		1021	}
		1022
		1023	postfork = 0;
746	}	1024	}
747		1025
748	#if EV_MULTIPLICITY	1026	#if EV_MULTIPLICITY
749	struct ev_loop *	1027	struct ev_loop *
750	ev_loop_new (int methods)	1028	ev_loop_new (unsigned int flags)
751	{	1029	{
752	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1030	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
753		1031
754	memset (loop, 0, sizeof (struct ev_loop));	1032	memset (loop, 0, sizeof (struct ev_loop));
755		1033
756	loop_init (EV_A_ methods);	1034	loop_init (EV_A_ flags);
757		1035
758	if (ev_method (EV_A))	1036	if (ev_backend (EV_A))
759	return loop;	1037	return loop;
760		1038
761	return 0;	1039	return 0;
762	}	1040	}
763		1041
…		…
769	}	1047	}
770		1048
771	void	1049	void
772	ev_loop_fork (EV_P)	1050	ev_loop_fork (EV_P)
773	{	1051	{
774	loop_fork (EV_A);	1052	postfork = 1;
775	}	1053	}
776		1054
777	#endif	1055	#endif
778		1056
779	#if EV_MULTIPLICITY	1057	#if EV_MULTIPLICITY
780	struct ev_loop default_loop_struct;
781	static struct ev_loop *default_loop;
782
783	struct ev_loop *	1058	struct ev_loop *
		1059	ev_default_loop_init (unsigned int flags)
784	#else	1060	#else
785	static int default_loop;
786
787	int	1061	int
		1062	ev_default_loop (unsigned int flags)
788	#endif	1063	#endif
789	ev_default_loop (int methods)
790	{	1064	{
791	if (sigpipe [0] == sigpipe [1])	1065	if (sigpipe [0] == sigpipe [1])
792	if (pipe (sigpipe))	1066	if (pipe (sigpipe))
793	return 0;	1067	return 0;
794		1068
795	if (!default_loop)	1069	if (!ev_default_loop_ptr)
796	{	1070	{
797	#if EV_MULTIPLICITY	1071	#if EV_MULTIPLICITY
798	struct ev_loop *loop = default_loop = &default_loop_struct;	1072	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
799	#else	1073	#else
800	default_loop = 1;	1074	ev_default_loop_ptr = 1;
801	#endif	1075	#endif
802		1076
803	loop_init (EV_A_ methods);	1077	loop_init (EV_A_ flags);
804		1078
805	if (ev_method (EV_A))	1079	if (ev_backend (EV_A))
806	{	1080	{
807	ev_watcher_init (&sigev, sigcb);
808	ev_set_priority (&sigev, EV_MAXPRI);
809	siginit (EV_A);	1081	siginit (EV_A);
810		1082
811	#ifndef WIN32	1083	#ifndef _WIN32
812	ev_signal_init (&childev, childcb, SIGCHLD);	1084	ev_signal_init (&childev, childcb, SIGCHLD);
813	ev_set_priority (&childev, EV_MAXPRI);	1085	ev_set_priority (&childev, EV_MAXPRI);
814	ev_signal_start (EV_A_ &childev);	1086	ev_signal_start (EV_A_ &childev);
815	ev_unref (EV_A); /* child watcher should not keep loop alive */	1087	ev_unref (EV_A); /* child watcher should not keep loop alive */
816	#endif	1088	#endif
817	}	1089	}
818	else	1090	else
819	default_loop = 0;	1091	ev_default_loop_ptr = 0;
820	}	1092	}
821		1093
822	return default_loop;	1094	return ev_default_loop_ptr;
823	}	1095	}
824		1096
825	void	1097	void
826	ev_default_destroy (void)	1098	ev_default_destroy (void)
827	{	1099	{
828	#if EV_MULTIPLICITY	1100	#if EV_MULTIPLICITY
829	struct ev_loop *loop = default_loop;	1101	struct ev_loop *loop = ev_default_loop_ptr;
830	#endif	1102	#endif
831		1103
		1104	#ifndef _WIN32
832	ev_ref (EV_A); /* child watcher */	1105	ev_ref (EV_A); /* child watcher */
833	ev_signal_stop (EV_A_ &childev);	1106	ev_signal_stop (EV_A_ &childev);
		1107	#endif
834		1108
835	ev_ref (EV_A); /* signal watcher */	1109	ev_ref (EV_A); /* signal watcher */
836	ev_io_stop (EV_A_ &sigev);	1110	ev_io_stop (EV_A_ &sigev);
837		1111
838	close (sigpipe [0]); sigpipe [0] = 0;	1112	close (sigpipe [0]); sigpipe [0] = 0;
…		…
843		1117
844	void	1118	void
845	ev_default_fork (void)	1119	ev_default_fork (void)
846	{	1120	{
847	#if EV_MULTIPLICITY	1121	#if EV_MULTIPLICITY
848	struct ev_loop *loop = default_loop;	1122	struct ev_loop *loop = ev_default_loop_ptr;
849	#endif	1123	#endif
850		1124
851	loop_fork (EV_A);	1125	if (backend)
852		1126	postfork = 1;
853	ev_io_stop (EV_A_ &sigev);
854	close (sigpipe [0]);
855	close (sigpipe [1]);
856	pipe (sigpipe);
857
858	ev_ref (EV_A); /* signal watcher */
859	siginit (EV_A);
860	}	1127	}
861		1128
862	/*****************************************************************************/	1129	/*****************************************************************************/
863		1130
864	static void	1131	int inline_size
		1132	any_pending (EV_P)
		1133	{
		1134	int pri;
		1135
		1136	for (pri = NUMPRI; pri--; )
		1137	if (pendingcnt [pri])
		1138	return 1;
		1139
		1140	return 0;
		1141	}
		1142
		1143	void inline_speed
865	call_pending (EV_P)	1144	call_pending (EV_P)
866	{	1145	{
867	int pri;	1146	int pri;
868		1147
869	for (pri = NUMPRI; pri--; )	1148	for (pri = NUMPRI; pri--; )
870	while (pendingcnt [pri])	1149	while (pendingcnt [pri])
871	{	1150	{
872	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1151	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
873		1152
874	if (p->w)	1153	if (expect_true (p->w))
875	{	1154	{
		1155	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1156
876	p->w->pending = 0;	1157	p->w->pending = 0;
877	p->w->cb (EV_A_ p->w, p->events);	1158	EV_CB_INVOKE (p->w, p->events);
878	}	1159	}
879	}	1160	}
880	}	1161	}
881		1162
882	static void	1163	void inline_size
883	timers_reify (EV_P)	1164	timers_reify (EV_P)
884	{	1165	{
885	while (timercnt && ((WT)timers [0])->at <= mn_now)	1166	while (timercnt && ((WT)timers [0])->at <= mn_now)
886	{	1167	{
887	struct ev_timer *w = timers [0];	1168	ev_timer *w = timers [0];
888		1169
889	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1170	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
890		1171
891	/* first reschedule or stop timer */	1172	/* first reschedule or stop timer */
892	if (w->repeat)	1173	if (w->repeat)
893	{	1174	{
894	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1175	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1176
895	((WT)w)->at = mn_now + w->repeat;	1177	((WT)w)->at += w->repeat;
		1178	if (((WT)w)->at < mn_now)
		1179	((WT)w)->at = mn_now;
		1180
896	downheap ((WT *)timers, timercnt, 0);	1181	downheap ((WT *)timers, timercnt, 0);
897	}	1182	}
898	else	1183	else
899	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1184	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
900		1185
901	event (EV_A_ (W)w, EV_TIMEOUT);	1186	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
902	}	1187	}
903	}	1188	}
904		1189
905	static void	1190	#if EV_PERIODIC_ENABLE
		1191	void inline_size
906	periodics_reify (EV_P)	1192	periodics_reify (EV_P)
907	{	1193	{
908	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1194	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
909	{	1195	{
910	struct ev_periodic *w = periodics [0];	1196	ev_periodic *w = periodics [0];
911		1197
912	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1198	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
913		1199
914	/* first reschedule or stop timer */	1200	/* first reschedule or stop timer */
915	if (w->interval)	1201	if (w->reschedule_cb)
916	{	1202	{
		1203	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1204	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1205	downheap ((WT *)periodics, periodiccnt, 0);
		1206	}
		1207	else if (w->interval)
		1208	{
917	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1209	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
918	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1210	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
919	downheap ((WT *)periodics, periodiccnt, 0);	1211	downheap ((WT *)periodics, periodiccnt, 0);
920	}	1212	}
921	else	1213	else
922	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1214	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
923		1215
924	event (EV_A_ (W)w, EV_PERIODIC);	1216	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
925	}	1217	}
926	}	1218	}
927		1219
928	static void	1220	static void noinline
929	periodics_reschedule (EV_P)	1221	periodics_reschedule (EV_P)
930	{	1222	{
931	int i;	1223	int i;
932		1224
933	/* adjust periodics after time jump */	1225	/* adjust periodics after time jump */
934	for (i = 0; i < periodiccnt; ++i)	1226	for (i = 0; i < periodiccnt; ++i)
935	{	1227	{
936	struct ev_periodic *w = periodics [i];	1228	ev_periodic *w = periodics [i];
937		1229
		1230	if (w->reschedule_cb)
		1231	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
938	if (w->interval)	1232	else if (w->interval)
939	{
940	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1233	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
941
942	if (fabs (diff) >= 1e-4)
943	{
944	ev_periodic_stop (EV_A_ w);
945	ev_periodic_start (EV_A_ w);
946
947	i = 0; /* restart loop, inefficient, but time jumps should be rare */
948	}
949	}
950	}	1234	}
951	}
952		1235
953	inline int	1236	/* now rebuild the heap */
		1237	for (i = periodiccnt >> 1; i--; )
		1238	downheap ((WT *)periodics, periodiccnt, i);
		1239	}
		1240	#endif
		1241
		1242	int inline_size
954	time_update_monotonic (EV_P)	1243	time_update_monotonic (EV_P)
955	{	1244	{
956	mn_now = get_clock ();	1245	mn_now = get_clock ();
957		1246
958	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1247	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
959	{	1248	{
960	rt_now = rtmn_diff + mn_now;	1249	ev_rt_now = rtmn_diff + mn_now;
961	return 0;	1250	return 0;
962	}	1251	}
963	else	1252	else
964	{	1253	{
965	now_floor = mn_now;	1254	now_floor = mn_now;
966	rt_now = ev_time ();	1255	ev_rt_now = ev_time ();
967	return 1;	1256	return 1;
968	}	1257	}
969	}	1258	}
970		1259
971	static void	1260	void inline_size
972	time_update (EV_P)	1261	time_update (EV_P)
973	{	1262	{
974	int i;	1263	int i;
975		1264
976	#if EV_USE_MONOTONIC	1265	#if EV_USE_MONOTONIC
…		…
978	{	1267	{
979	if (time_update_monotonic (EV_A))	1268	if (time_update_monotonic (EV_A))
980	{	1269	{
981	ev_tstamp odiff = rtmn_diff;	1270	ev_tstamp odiff = rtmn_diff;
982		1271
983	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1272	/* loop a few times, before making important decisions.
		1273	* on the choice of "4": one iteration isn't enough,
		1274	* in case we get preempted during the calls to
		1275	* ev_time and get_clock. a second call is almost guarenteed
		1276	* to succeed in that case, though. and looping a few more times
		1277	* doesn't hurt either as we only do this on time-jumps or
		1278	* in the unlikely event of getting preempted here.
		1279	*/
		1280	for (i = 4; --i; )
984	{	1281	{
985	rtmn_diff = rt_now - mn_now;	1282	rtmn_diff = ev_rt_now - mn_now;
986		1283
987	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1284	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
988	return; /* all is well */	1285	return; /* all is well */
989		1286
990	rt_now = ev_time ();	1287	ev_rt_now = ev_time ();
991	mn_now = get_clock ();	1288	mn_now = get_clock ();
992	now_floor = mn_now;	1289	now_floor = mn_now;
993	}	1290	}
994		1291
		1292	# if EV_PERIODIC_ENABLE
995	periodics_reschedule (EV_A);	1293	periodics_reschedule (EV_A);
		1294	# endif
996	/* no timer adjustment, as the monotonic clock doesn't jump */	1295	/* no timer adjustment, as the monotonic clock doesn't jump */
997	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1296	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
998	}	1297	}
999	}	1298	}
1000	else	1299	else
1001	#endif	1300	#endif
1002	{	1301	{
1003	rt_now = ev_time ();	1302	ev_rt_now = ev_time ();
1004		1303
1005	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1304	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1006	{	1305	{
		1306	#if EV_PERIODIC_ENABLE
1007	periodics_reschedule (EV_A);	1307	periodics_reschedule (EV_A);
		1308	#endif
1008		1309
1009	/* adjust timers. this is easy, as the offset is the same for all */	1310	/* adjust timers. this is easy, as the offset is the same for all */
1010	for (i = 0; i < timercnt; ++i)	1311	for (i = 0; i < timercnt; ++i)
1011	((WT)timers [i])->at += rt_now - mn_now;	1312	((WT)timers [i])->at += ev_rt_now - mn_now;
1012	}	1313	}
1013		1314
1014	mn_now = rt_now;	1315	mn_now = ev_rt_now;
1015	}	1316	}
1016	}	1317	}
1017		1318
1018	void	1319	void
1019	ev_ref (EV_P)	1320	ev_ref (EV_P)
…		…
1030	static int loop_done;	1331	static int loop_done;
1031		1332
1032	void	1333	void
1033	ev_loop (EV_P_ int flags)	1334	ev_loop (EV_P_ int flags)
1034	{	1335	{
1035	double block;
1036	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1336	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1337	? EVUNLOOP_ONE
		1338	: EVUNLOOP_CANCEL;
1037		1339
1038	do	1340	while (activecnt)
1039	{	1341	{
		1342	/* we might have forked, so reify kernel state if necessary */
		1343	#if EV_FORK_ENABLE
		1344	if (expect_false (postfork))
		1345	if (forkcnt)
		1346	{
		1347	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1348	call_pending (EV_A);
		1349	}
		1350	#endif
		1351
1040	/* queue check watchers (and execute them) */	1352	/* queue check watchers (and execute them) */
1041	if (expect_false (preparecnt))	1353	if (expect_false (preparecnt))
1042	{	1354	{
1043	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1355	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1044	call_pending (EV_A);	1356	call_pending (EV_A);
1045	}	1357	}
1046		1358
		1359	/* we might have forked, so reify kernel state if necessary */
		1360	if (expect_false (postfork))
		1361	loop_fork (EV_A);
		1362
1047	/* update fd-related kernel structures */	1363	/* update fd-related kernel structures */
1048	fd_reify (EV_A);	1364	fd_reify (EV_A);
1049		1365
1050	/* calculate blocking time */	1366	/* calculate blocking time */
		1367	{
		1368	double block;
1051		1369
1052	/* we only need this for !monotonic clockor timers, but as we basically	1370	if (flags & EVLOOP_NONBLOCK || idlecnt)
1053	always have timers, we just calculate it always */	1371	block = 0.; /* do not block at all */
		1372	else
		1373	{
		1374	/* update time to cancel out callback processing overhead */
1054	#if EV_USE_MONOTONIC	1375	#if EV_USE_MONOTONIC
1055	if (expect_true (have_monotonic))	1376	if (expect_true (have_monotonic))
1056	time_update_monotonic (EV_A);	1377	time_update_monotonic (EV_A);
1057	else	1378	else
1058	#endif	1379	#endif
1059	{	1380	{
1060	rt_now = ev_time ();	1381	ev_rt_now = ev_time ();
1061	mn_now = rt_now;	1382	mn_now = ev_rt_now;
1062	}	1383	}
1063		1384
1064	if (flags & EVLOOP_NONBLOCK || idlecnt)
1065	block = 0.;
1066	else
1067	{
1068	block = MAX_BLOCKTIME;	1385	block = MAX_BLOCKTIME;
1069		1386
1070	if (timercnt)	1387	if (timercnt)
1071	{	1388	{
1072	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1389	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1073	if (block > to) block = to;	1390	if (block > to) block = to;
1074	}	1391	}
1075		1392
		1393	#if EV_PERIODIC_ENABLE
1076	if (periodiccnt)	1394	if (periodiccnt)
1077	{	1395	{
1078	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1396	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1079	if (block > to) block = to;	1397	if (block > to) block = to;
1080	}	1398	}
		1399	#endif
1081		1400
1082	if (block < 0.) block = 0.;	1401	if (expect_false (block < 0.)) block = 0.;
1083	}	1402	}
1084		1403
1085	method_poll (EV_A_ block);	1404	backend_poll (EV_A_ block);
		1405	}
1086		1406
1087	/* update rt_now, do magic */	1407	/* update ev_rt_now, do magic */
1088	time_update (EV_A);	1408	time_update (EV_A);
1089		1409
1090	/* queue pending timers and reschedule them */	1410	/* queue pending timers and reschedule them */
1091	timers_reify (EV_A); /* relative timers called last */	1411	timers_reify (EV_A); /* relative timers called last */
		1412	#if EV_PERIODIC_ENABLE
1092	periodics_reify (EV_A); /* absolute timers called first */	1413	periodics_reify (EV_A); /* absolute timers called first */
		1414	#endif
1093		1415
1094	/* queue idle watchers unless io or timers are pending */	1416	/* queue idle watchers unless other events are pending */
1095	if (!pendingcnt)	1417	if (idlecnt && !any_pending (EV_A))
1096	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1418	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1097		1419
1098	/* queue check watchers, to be executed first */	1420	/* queue check watchers, to be executed first */
1099	if (checkcnt)	1421	if (expect_false (checkcnt))
1100	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1422	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1101		1423
1102	call_pending (EV_A);	1424	call_pending (EV_A);
1103	}
1104	while (activecnt && !loop_done);
1105		1425
1106	if (loop_done != 2)	1426	if (expect_false (loop_done))
1107	loop_done = 0;	1427	break;
		1428	}
		1429
		1430	if (loop_done == EVUNLOOP_ONE)
		1431	loop_done = EVUNLOOP_CANCEL;
1108	}	1432	}
1109		1433
1110	void	1434	void
1111	ev_unloop (EV_P_ int how)	1435	ev_unloop (EV_P_ int how)
1112	{	1436	{
1113	loop_done = how;	1437	loop_done = how;
1114	}	1438	}
1115		1439
1116	/*****************************************************************************/	1440	/*****************************************************************************/
1117		1441
1118	inline void	1442	void inline_size
1119	wlist_add (WL *head, WL elem)	1443	wlist_add (WL *head, WL elem)
1120	{	1444	{
1121	elem->next = *head;	1445	elem->next = *head;
1122	*head = elem;	1446	*head = elem;
1123	}	1447	}
1124		1448
1125	inline void	1449	void inline_size
1126	wlist_del (WL *head, WL elem)	1450	wlist_del (WL *head, WL elem)
1127	{	1451	{
1128	while (*head)	1452	while (*head)
1129	{	1453	{
1130	if (*head == elem)	1454	if (*head == elem)
…		…
1135		1459
1136	head = &(*head)->next;	1460	head = &(*head)->next;
1137	}	1461	}
1138	}	1462	}
1139		1463
1140	inline void	1464	void inline_speed
1141	ev_clear_pending (EV_P_ W w)	1465	ev_clear_pending (EV_P_ W w)
1142	{	1466	{
1143	if (w->pending)	1467	if (w->pending)
1144	{	1468	{
1145	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1469	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1146	w->pending = 0;	1470	w->pending = 0;
1147	}	1471	}
1148	}	1472	}
1149		1473
1150	inline void	1474	void inline_speed
1151	ev_start (EV_P_ W w, int active)	1475	ev_start (EV_P_ W w, int active)
1152	{	1476	{
1153	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1477	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1154	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1478	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1155		1479
1156	w->active = active;	1480	w->active = active;
1157	ev_ref (EV_A);	1481	ev_ref (EV_A);
1158	}	1482	}
1159		1483
1160	inline void	1484	void inline_size
1161	ev_stop (EV_P_ W w)	1485	ev_stop (EV_P_ W w)
1162	{	1486	{
1163	ev_unref (EV_A);	1487	ev_unref (EV_A);
1164	w->active = 0;	1488	w->active = 0;
1165	}	1489	}
1166		1490
1167	/*****************************************************************************/	1491	/*****************************************************************************/
1168		1492
1169	void	1493	void
1170	ev_io_start (EV_P_ struct ev_io *w)	1494	ev_io_start (EV_P_ ev_io *w)
1171	{	1495	{
1172	int fd = w->fd;	1496	int fd = w->fd;
1173		1497
1174	if (ev_is_active (w))	1498	if (expect_false (ev_is_active (w)))
1175	return;	1499	return;
1176		1500
1177	assert (("ev_io_start called with negative fd", fd >= 0));	1501	assert (("ev_io_start called with negative fd", fd >= 0));
1178		1502
1179	ev_start (EV_A_ (W)w, 1);	1503	ev_start (EV_A_ (W)w, 1);
1180	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1504	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1181	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1505	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1182		1506
1183	fd_change (EV_A_ fd);	1507	fd_change (EV_A_ fd);
1184	}	1508	}
1185		1509
1186	void	1510	void
1187	ev_io_stop (EV_P_ struct ev_io *w)	1511	ev_io_stop (EV_P_ ev_io *w)
1188	{	1512	{
1189	ev_clear_pending (EV_A_ (W)w);	1513	ev_clear_pending (EV_A_ (W)w);
1190	if (!ev_is_active (w))	1514	if (expect_false (!ev_is_active (w)))
1191	return;	1515	return;
		1516
		1517	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1192		1518
1193	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1519	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1194	ev_stop (EV_A_ (W)w);	1520	ev_stop (EV_A_ (W)w);
1195		1521
1196	fd_change (EV_A_ w->fd);	1522	fd_change (EV_A_ w->fd);
1197	}	1523	}
1198		1524
1199	void	1525	void
1200	ev_timer_start (EV_P_ struct ev_timer *w)	1526	ev_timer_start (EV_P_ ev_timer *w)
1201	{	1527	{
1202	if (ev_is_active (w))	1528	if (expect_false (ev_is_active (w)))
1203	return;	1529	return;
1204		1530
1205	((WT)w)->at += mn_now;	1531	((WT)w)->at += mn_now;
1206		1532
1207	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1533	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1208		1534
1209	ev_start (EV_A_ (W)w, ++timercnt);	1535	ev_start (EV_A_ (W)w, ++timercnt);
1210	array_needsize (timers, timermax, timercnt, );	1536	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1211	timers [timercnt - 1] = w;	1537	timers [timercnt - 1] = w;
1212	upheap ((WT *)timers, timercnt - 1);	1538	upheap ((WT *)timers, timercnt - 1);
1213		1539
		1540	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1541	}
		1542
		1543	void
		1544	ev_timer_stop (EV_P_ ev_timer *w)
		1545	{
		1546	ev_clear_pending (EV_A_ (W)w);
		1547	if (expect_false (!ev_is_active (w)))
		1548	return;
		1549
1214	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1550	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1215	}
1216		1551
1217	void	1552	{
1218	ev_timer_stop (EV_P_ struct ev_timer *w)	1553	int active = ((W)w)->active;
1219	{
1220	ev_clear_pending (EV_A_ (W)w);
1221	if (!ev_is_active (w))
1222	return;
1223		1554
1224	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1555	if (expect_true (--active < --timercnt))
1225
1226	if (((W)w)->active < timercnt--)
1227	{	1556	{
1228	timers [((W)w)->active - 1] = timers [timercnt];	1557	timers [active] = timers [timercnt];
1229	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1558	adjustheap ((WT *)timers, timercnt, active);
1230	}	1559	}
		1560	}
1231		1561
1232	((WT)w)->at = w->repeat;	1562	((WT)w)->at -= mn_now;
1233		1563
1234	ev_stop (EV_A_ (W)w);	1564	ev_stop (EV_A_ (W)w);
1235	}	1565	}
1236		1566
1237	void	1567	void
1238	ev_timer_again (EV_P_ struct ev_timer *w)	1568	ev_timer_again (EV_P_ ev_timer *w)
1239	{	1569	{
1240	if (ev_is_active (w))	1570	if (ev_is_active (w))
1241	{	1571	{
1242	if (w->repeat)	1572	if (w->repeat)
1243	{	1573	{
1244	((WT)w)->at = mn_now + w->repeat;	1574	((WT)w)->at = mn_now + w->repeat;
1245	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1575	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1246	}	1576	}
1247	else	1577	else
1248	ev_timer_stop (EV_A_ w);	1578	ev_timer_stop (EV_A_ w);
1249	}	1579	}
1250	else if (w->repeat)	1580	else if (w->repeat)
		1581	{
		1582	w->at = w->repeat;
1251	ev_timer_start (EV_A_ w);	1583	ev_timer_start (EV_A_ w);
		1584	}
1252	}	1585	}
1253		1586
		1587	#if EV_PERIODIC_ENABLE
1254	void	1588	void
1255	ev_periodic_start (EV_P_ struct ev_periodic *w)	1589	ev_periodic_start (EV_P_ ev_periodic *w)
1256	{	1590	{
1257	if (ev_is_active (w))	1591	if (expect_false (ev_is_active (w)))
1258	return;	1592	return;
1259		1593
		1594	if (w->reschedule_cb)
		1595	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1596	else if (w->interval)
		1597	{
1260	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1598	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1261
1262	/* this formula differs from the one in periodic_reify because we do not always round up */	1599	/* this formula differs from the one in periodic_reify because we do not always round up */
1263	if (w->interval)
1264	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1600	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1601	}
1265		1602
1266	ev_start (EV_A_ (W)w, ++periodiccnt);	1603	ev_start (EV_A_ (W)w, ++periodiccnt);
1267	array_needsize (periodics, periodicmax, periodiccnt, );	1604	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1268	periodics [periodiccnt - 1] = w;	1605	periodics [periodiccnt - 1] = w;
1269	upheap ((WT *)periodics, periodiccnt - 1);	1606	upheap ((WT *)periodics, periodiccnt - 1);
1270		1607
		1608	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1609	}
		1610
		1611	void
		1612	ev_periodic_stop (EV_P_ ev_periodic *w)
		1613	{
		1614	ev_clear_pending (EV_A_ (W)w);
		1615	if (expect_false (!ev_is_active (w)))
		1616	return;
		1617
1271	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1618	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1272	}
1273		1619
1274	void	1620	{
1275	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1621	int active = ((W)w)->active;
1276	{
1277	ev_clear_pending (EV_A_ (W)w);
1278	if (!ev_is_active (w))
1279	return;
1280		1622
1281	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1623	if (expect_true (--active < --periodiccnt))
1282
1283	if (((W)w)->active < periodiccnt--)
1284	{	1624	{
1285	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1625	periodics [active] = periodics [periodiccnt];
1286	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1626	adjustheap ((WT *)periodics, periodiccnt, active);
1287	}	1627	}
		1628	}
1288		1629
1289	ev_stop (EV_A_ (W)w);	1630	ev_stop (EV_A_ (W)w);
1290	}	1631	}
1291		1632
1292	void	1633	void
1293	ev_idle_start (EV_P_ struct ev_idle *w)	1634	ev_periodic_again (EV_P_ ev_periodic *w)
1294	{	1635	{
1295	if (ev_is_active (w))	1636	/* TODO: use adjustheap and recalculation */
1296	return;
1297
1298	ev_start (EV_A_ (W)w, ++idlecnt);
1299	array_needsize (idles, idlemax, idlecnt, );
1300	idles [idlecnt - 1] = w;
1301	}
1302
1303	void
1304	ev_idle_stop (EV_P_ struct ev_idle *w)
1305	{
1306	ev_clear_pending (EV_A_ (W)w);
1307	if (ev_is_active (w))
1308	return;
1309
1310	idles [((W)w)->active - 1] = idles [--idlecnt];
1311	ev_stop (EV_A_ (W)w);	1637	ev_periodic_stop (EV_A_ w);
		1638	ev_periodic_start (EV_A_ w);
1312	}	1639	}
1313		1640	#endif
1314	void
1315	ev_prepare_start (EV_P_ struct ev_prepare *w)
1316	{
1317	if (ev_is_active (w))
1318	return;
1319
1320	ev_start (EV_A_ (W)w, ++preparecnt);
1321	array_needsize (prepares, preparemax, preparecnt, );
1322	prepares [preparecnt - 1] = w;
1323	}
1324
1325	void
1326	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1327	{
1328	ev_clear_pending (EV_A_ (W)w);
1329	if (ev_is_active (w))
1330	return;
1331
1332	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1333	ev_stop (EV_A_ (W)w);
1334	}
1335
1336	void
1337	ev_check_start (EV_P_ struct ev_check *w)
1338	{
1339	if (ev_is_active (w))
1340	return;
1341
1342	ev_start (EV_A_ (W)w, ++checkcnt);
1343	array_needsize (checks, checkmax, checkcnt, );
1344	checks [checkcnt - 1] = w;
1345	}
1346
1347	void
1348	ev_check_stop (EV_P_ struct ev_check *w)
1349	{
1350	ev_clear_pending (EV_A_ (W)w);
1351	if (ev_is_active (w))
1352	return;
1353
1354	checks [((W)w)->active - 1] = checks [--checkcnt];
1355	ev_stop (EV_A_ (W)w);
1356	}
1357		1641
1358	#ifndef SA_RESTART	1642	#ifndef SA_RESTART
1359	# define SA_RESTART 0	1643	# define SA_RESTART 0
1360	#endif	1644	#endif
1361		1645
1362	void	1646	void
1363	ev_signal_start (EV_P_ struct ev_signal *w)	1647	ev_signal_start (EV_P_ ev_signal *w)
1364	{	1648	{
1365	#if EV_MULTIPLICITY	1649	#if EV_MULTIPLICITY
1366	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1650	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1367	#endif	1651	#endif
1368	if (ev_is_active (w))	1652	if (expect_false (ev_is_active (w)))
1369	return;	1653	return;
1370		1654
1371	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1655	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1372		1656
1373	ev_start (EV_A_ (W)w, 1);	1657	ev_start (EV_A_ (W)w, 1);
1374	array_needsize (signals, signalmax, w->signum, signals_init);	1658	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1375	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1659	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1376		1660
1377	if (!((WL)w)->next)	1661	if (!((WL)w)->next)
1378	{	1662	{
1379	#if WIN32	1663	#if _WIN32
1380	signal (w->signum, sighandler);	1664	signal (w->signum, sighandler);
1381	#else	1665	#else
1382	struct sigaction sa;	1666	struct sigaction sa;
1383	sa.sa_handler = sighandler;	1667	sa.sa_handler = sighandler;
1384	sigfillset (&sa.sa_mask);	1668	sigfillset (&sa.sa_mask);
…		…
1387	#endif	1671	#endif
1388	}	1672	}
1389	}	1673	}
1390		1674
1391	void	1675	void
1392	ev_signal_stop (EV_P_ struct ev_signal *w)	1676	ev_signal_stop (EV_P_ ev_signal *w)
1393	{	1677	{
1394	ev_clear_pending (EV_A_ (W)w);	1678	ev_clear_pending (EV_A_ (W)w);
1395	if (!ev_is_active (w))	1679	if (expect_false (!ev_is_active (w)))
1396	return;	1680	return;
1397		1681
1398	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1682	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1399	ev_stop (EV_A_ (W)w);	1683	ev_stop (EV_A_ (W)w);
1400		1684
1401	if (!signals [w->signum - 1].head)	1685	if (!signals [w->signum - 1].head)
1402	signal (w->signum, SIG_DFL);	1686	signal (w->signum, SIG_DFL);
1403	}	1687	}
1404		1688
1405	void	1689	void
1406	ev_child_start (EV_P_ struct ev_child *w)	1690	ev_child_start (EV_P_ ev_child *w)
1407	{	1691	{
1408	#if EV_MULTIPLICITY	1692	#if EV_MULTIPLICITY
1409	assert (("child watchers are only supported in the default loop", loop == default_loop));	1693	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1410	#endif	1694	#endif
1411	if (ev_is_active (w))	1695	if (expect_false (ev_is_active (w)))
1412	return;	1696	return;
1413		1697
1414	ev_start (EV_A_ (W)w, 1);	1698	ev_start (EV_A_ (W)w, 1);
1415	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1699	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1416	}	1700	}
1417		1701
1418	void	1702	void
1419	ev_child_stop (EV_P_ struct ev_child *w)	1703	ev_child_stop (EV_P_ ev_child *w)
1420	{	1704	{
1421	ev_clear_pending (EV_A_ (W)w);	1705	ev_clear_pending (EV_A_ (W)w);
1422	if (ev_is_active (w))	1706	if (expect_false (!ev_is_active (w)))
1423	return;	1707	return;
1424		1708
1425	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1709	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1426	ev_stop (EV_A_ (W)w);	1710	ev_stop (EV_A_ (W)w);
1427	}	1711	}
1428		1712
		1713	#if EV_STAT_ENABLE
		1714
		1715	# ifdef _WIN32
		1716	# undef lstat
		1717	# define lstat(a,b) _stati64 (a,b)
		1718	# endif
		1719
		1720	#define DEF_STAT_INTERVAL 5.0074891
		1721	#define MIN_STAT_INTERVAL 0.1074891
		1722
		1723	void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1724
		1725	#if EV_USE_INOTIFY
		1726	# define EV_INOTIFY_BUFSIZE 8192
		1727
		1728	static void noinline
		1729	infy_add (EV_P_ ev_stat *w)
		1730	{
		1731	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);
		1732
		1733	if (w->wd < 0)
		1734	{
		1735	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1736
		1737	/* monitor some parent directory for speedup hints */
		1738	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1739	{
		1740	char path [4096];
		1741	strcpy (path, w->path);
		1742
		1743	do
		1744	{
		1745	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1746	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1747
		1748	char *pend = strrchr (path, '/');
		1749
		1750	if (!pend)
		1751	break; /* whoops, no '/', complain to your admin */
		1752
		1753	*pend = 0;
		1754	w->wd = inotify_add_watch (fs_fd, path, mask);
		1755	}
		1756	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1757	}
		1758	}
		1759	else
		1760	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1761
		1762	if (w->wd >= 0)
		1763	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1764	}
		1765
		1766	static void noinline
		1767	infy_del (EV_P_ ev_stat *w)
		1768	{
		1769	int slot;
		1770	int wd = w->wd;
		1771
		1772	if (wd < 0)
		1773	return;
		1774
		1775	w->wd = -2;
		1776	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1777	wlist_del (&fs_hash [slot].head, (WL)w);
		1778
		1779	/* remove this watcher, if others are watching it, they will rearm */
		1780	inotify_rm_watch (fs_fd, wd);
		1781	}
		1782
		1783	static void noinline
		1784	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1785	{
		1786	if (slot < 0)
		1787	/* overflow, need to check for all hahs slots */
		1788	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1789	infy_wd (EV_A_ slot, wd, ev);
		1790	else
		1791	{
		1792	WL w_;
		1793
		1794	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1795	{
		1796	ev_stat *w = (ev_stat *)w_;
		1797	w_ = w_->next; /* lets us remove this watcher and all before it */
		1798
		1799	if (w->wd == wd || wd == -1)
		1800	{
		1801	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1802	{
		1803	w->wd = -1;
		1804	infy_add (EV_A_ w); /* re-add, no matter what */
		1805	}
		1806
		1807	stat_timer_cb (EV_A_ &w->timer, 0);
		1808	}
		1809	}
		1810	}
		1811	}
		1812
		1813	static void
		1814	infy_cb (EV_P_ ev_io *w, int revents)
		1815	{
		1816	char buf [EV_INOTIFY_BUFSIZE];
		1817	struct inotify_event *ev = (struct inotify_event *)buf;
		1818	int ofs;
		1819	int len = read (fs_fd, buf, sizeof (buf));
		1820
		1821	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1822	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1823	}
		1824
		1825	void inline_size
		1826	infy_init (EV_P)
		1827	{
		1828	if (fs_fd != -2)
		1829	return;
		1830
		1831	fs_fd = inotify_init ();
		1832
		1833	if (fs_fd >= 0)
		1834	{
		1835	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1836	ev_set_priority (&fs_w, EV_MAXPRI);
		1837	ev_io_start (EV_A_ &fs_w);
		1838	}
		1839	}
		1840
		1841	void inline_size
		1842	infy_fork (EV_P)
		1843	{
		1844	int slot;
		1845
		1846	if (fs_fd < 0)
		1847	return;
		1848
		1849	close (fs_fd);
		1850	fs_fd = inotify_init ();
		1851
		1852	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1853	{
		1854	WL w_ = fs_hash [slot].head;
		1855	fs_hash [slot].head = 0;
		1856
		1857	while (w_)
		1858	{
		1859	ev_stat *w = (ev_stat *)w_;
		1860	w_ = w_->next; /* lets us add this watcher */
		1861
		1862	w->wd = -1;
		1863
		1864	if (fs_fd >= 0)
		1865	infy_add (EV_A_ w); /* re-add, no matter what */
		1866	else
		1867	ev_timer_start (EV_A_ &w->timer);
		1868	}
		1869
		1870	}
		1871	}
		1872
		1873	#endif
		1874
		1875	void
		1876	ev_stat_stat (EV_P_ ev_stat *w)
		1877	{
		1878	if (lstat (w->path, &w->attr) < 0)
		1879	w->attr.st_nlink = 0;
		1880	else if (!w->attr.st_nlink)
		1881	w->attr.st_nlink = 1;
		1882	}
		1883
		1884	void noinline
		1885	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1886	{
		1887	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1888
		1889	/* we copy this here each the time so that */
		1890	/* prev has the old value when the callback gets invoked */
		1891	w->prev = w->attr;
		1892	ev_stat_stat (EV_A_ w);
		1893
		1894	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1895	{
		1896	#if EV_USE_INOTIFY
		1897	infy_del (EV_A_ w);
		1898	infy_add (EV_A_ w);
		1899	ev_stat_stat (EV_A_ w); /* avoid race... */
		1900	#endif
		1901
		1902	ev_feed_event (EV_A_ w, EV_STAT);
		1903	}
		1904	}
		1905
		1906	void
		1907	ev_stat_start (EV_P_ ev_stat *w)
		1908	{
		1909	if (expect_false (ev_is_active (w)))
		1910	return;
		1911
		1912	/* since we use memcmp, we need to clear any padding data etc. */
		1913	memset (&w->prev, 0, sizeof (ev_statdata));
		1914	memset (&w->attr, 0, sizeof (ev_statdata));
		1915
		1916	ev_stat_stat (EV_A_ w);
		1917
		1918	if (w->interval < MIN_STAT_INTERVAL)
		1919	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1920
		1921	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1922	ev_set_priority (&w->timer, ev_priority (w));
		1923
		1924	#if EV_USE_INOTIFY
		1925	infy_init (EV_A);
		1926
		1927	if (fs_fd >= 0)
		1928	infy_add (EV_A_ w);
		1929	else
		1930	#endif
		1931	ev_timer_start (EV_A_ &w->timer);
		1932
		1933	ev_start (EV_A_ (W)w, 1);
		1934	}
		1935
		1936	void
		1937	ev_stat_stop (EV_P_ ev_stat *w)
		1938	{
		1939	ev_clear_pending (EV_A_ (W)w);
		1940	if (expect_false (!ev_is_active (w)))
		1941	return;
		1942
		1943	#if EV_USE_INOTIFY
		1944	infy_del (EV_A_ w);
		1945	#endif
		1946	ev_timer_stop (EV_A_ &w->timer);
		1947
		1948	ev_stop (EV_A_ (W)w);
		1949	}
		1950	#endif
		1951
		1952	void
		1953	ev_idle_start (EV_P_ ev_idle *w)
		1954	{
		1955	if (expect_false (ev_is_active (w)))
		1956	return;
		1957
		1958	ev_start (EV_A_ (W)w, ++idlecnt);
		1959	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1960	idles [idlecnt - 1] = w;
		1961	}
		1962
		1963	void
		1964	ev_idle_stop (EV_P_ ev_idle *w)
		1965	{
		1966	ev_clear_pending (EV_A_ (W)w);
		1967	if (expect_false (!ev_is_active (w)))
		1968	return;
		1969
		1970	{
		1971	int active = ((W)w)->active;
		1972	idles [active - 1] = idles [--idlecnt];
		1973	((W)idles [active - 1])->active = active;
		1974	}
		1975
		1976	ev_stop (EV_A_ (W)w);
		1977	}
		1978
		1979	void
		1980	ev_prepare_start (EV_P_ ev_prepare *w)
		1981	{
		1982	if (expect_false (ev_is_active (w)))
		1983	return;
		1984
		1985	ev_start (EV_A_ (W)w, ++preparecnt);
		1986	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1987	prepares [preparecnt - 1] = w;
		1988	}
		1989
		1990	void
		1991	ev_prepare_stop (EV_P_ ev_prepare *w)
		1992	{
		1993	ev_clear_pending (EV_A_ (W)w);
		1994	if (expect_false (!ev_is_active (w)))
		1995	return;
		1996
		1997	{
		1998	int active = ((W)w)->active;
		1999	prepares [active - 1] = prepares [--preparecnt];
		2000	((W)prepares [active - 1])->active = active;
		2001	}
		2002
		2003	ev_stop (EV_A_ (W)w);
		2004	}
		2005
		2006	void
		2007	ev_check_start (EV_P_ ev_check *w)
		2008	{
		2009	if (expect_false (ev_is_active (w)))
		2010	return;
		2011
		2012	ev_start (EV_A_ (W)w, ++checkcnt);
		2013	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2014	checks [checkcnt - 1] = w;
		2015	}
		2016
		2017	void
		2018	ev_check_stop (EV_P_ ev_check *w)
		2019	{
		2020	ev_clear_pending (EV_A_ (W)w);
		2021	if (expect_false (!ev_is_active (w)))
		2022	return;
		2023
		2024	{
		2025	int active = ((W)w)->active;
		2026	checks [active - 1] = checks [--checkcnt];
		2027	((W)checks [active - 1])->active = active;
		2028	}
		2029
		2030	ev_stop (EV_A_ (W)w);
		2031	}
		2032
		2033	#if EV_EMBED_ENABLE
		2034	void noinline
		2035	ev_embed_sweep (EV_P_ ev_embed *w)
		2036	{
		2037	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2038	}
		2039
		2040	static void
		2041	embed_cb (EV_P_ ev_io *io, int revents)
		2042	{
		2043	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2044
		2045	if (ev_cb (w))
		2046	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2047	else
		2048	ev_embed_sweep (loop, w);
		2049	}
		2050
		2051	void
		2052	ev_embed_start (EV_P_ ev_embed *w)
		2053	{
		2054	if (expect_false (ev_is_active (w)))
		2055	return;
		2056
		2057	{
		2058	struct ev_loop *loop = w->loop;
		2059	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2060	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2061	}
		2062
		2063	ev_set_priority (&w->io, ev_priority (w));
		2064	ev_io_start (EV_A_ &w->io);
		2065
		2066	ev_start (EV_A_ (W)w, 1);
		2067	}
		2068
		2069	void
		2070	ev_embed_stop (EV_P_ ev_embed *w)
		2071	{
		2072	ev_clear_pending (EV_A_ (W)w);
		2073	if (expect_false (!ev_is_active (w)))
		2074	return;
		2075
		2076	ev_io_stop (EV_A_ &w->io);
		2077
		2078	ev_stop (EV_A_ (W)w);
		2079	}
		2080	#endif
		2081
		2082	#if EV_FORK_ENABLE
		2083	void
		2084	ev_fork_start (EV_P_ ev_fork *w)
		2085	{
		2086	if (expect_false (ev_is_active (w)))
		2087	return;
		2088
		2089	ev_start (EV_A_ (W)w, ++forkcnt);
		2090	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2091	forks [forkcnt - 1] = w;
		2092	}
		2093
		2094	void
		2095	ev_fork_stop (EV_P_ ev_fork *w)
		2096	{
		2097	ev_clear_pending (EV_A_ (W)w);
		2098	if (expect_false (!ev_is_active (w)))
		2099	return;
		2100
		2101	{
		2102	int active = ((W)w)->active;
		2103	forks [active - 1] = forks [--forkcnt];
		2104	((W)forks [active - 1])->active = active;
		2105	}
		2106
		2107	ev_stop (EV_A_ (W)w);
		2108	}
		2109	#endif
		2110
1429	/*****************************************************************************/	2111	/*****************************************************************************/
1430		2112
1431	struct ev_once	2113	struct ev_once
1432	{	2114	{
1433	struct ev_io io;	2115	ev_io io;
1434	struct ev_timer to;	2116	ev_timer to;
1435	void (*cb)(int revents, void *arg);	2117	void (*cb)(int revents, void *arg);
1436	void *arg;	2118	void *arg;
1437	};	2119	};
1438		2120
1439	static void	2121	static void
…		…
1448		2130
1449	cb (revents, arg);	2131	cb (revents, arg);
1450	}	2132	}
1451		2133
1452	static void	2134	static void
1453	once_cb_io (EV_P_ struct ev_io *w, int revents)	2135	once_cb_io (EV_P_ ev_io *w, int revents)
1454	{	2136	{
1455	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2137	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1456	}	2138	}
1457		2139
1458	static void	2140	static void
1459	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2141	once_cb_to (EV_P_ ev_timer *w, int revents)
1460	{	2142	{
1461	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2143	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1462	}	2144	}
1463		2145
1464	void	2146	void
1465	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2147	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1466	{	2148	{
1467	struct ev_once *once = ev_malloc (sizeof (struct ev_once));	2149	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1468		2150
1469	if (!once)	2151	if (expect_false (!once))
		2152	{
1470	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2153	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1471	else	2154	return;
1472	{	2155	}
		2156
1473	once->cb = cb;	2157	once->cb = cb;
1474	once->arg = arg;	2158	once->arg = arg;
1475		2159
1476	ev_watcher_init (&once->io, once_cb_io);	2160	ev_init (&once->io, once_cb_io);
1477	if (fd >= 0)	2161	if (fd >= 0)
1478	{	2162	{
1479	ev_io_set (&once->io, fd, events);	2163	ev_io_set (&once->io, fd, events);
1480	ev_io_start (EV_A_ &once->io);	2164	ev_io_start (EV_A_ &once->io);
1481	}	2165	}
1482		2166
1483	ev_watcher_init (&once->to, once_cb_to);	2167	ev_init (&once->to, once_cb_to);
1484	if (timeout >= 0.)	2168	if (timeout >= 0.)
1485	{	2169	{
1486	ev_timer_set (&once->to, timeout, 0.);	2170	ev_timer_set (&once->to, timeout, 0.);
1487	ev_timer_start (EV_A_ &once->to);	2171	ev_timer_start (EV_A_ &once->to);
1488	}
1489	}	2172	}
1490	}	2173	}
1491		2174
		2175	#ifdef __cplusplus
		2176	}
		2177	#endif
		2178

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