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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 1.152 by root, Wed Nov 28 11:15:55 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, size_t size) = realloc;
178		287
		288	void
179	void ev_set_allocator (void *(*cb)(void *ptr, long size))	289	ev_set_allocator (void *(*cb)(void *ptr, size_t 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, size_t size)
186	{	296	{
187	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	297	ptr = alloc (ptr, size);
188		298
189	if (!ptr && size)	299	if (!ptr && size)
190	{	300	{
191	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	301	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", (long)size);
192	abort ();	302	abort ();
193	}	303	}
194		304
195	return ptr;	305	return ptr;
196	}	306	}
…		…
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	typedef struct
		330	{
		331	#if EV_USE_INOTIFY
		332	WL head;
		333	#endif
		334	} ANFS;
		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
737	loop_fork (EV_P)	991	loop_fork (EV_P)
738	{	992	{
739	/*TODO*/	993	#if EV_USE_PORT
		994	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		995	#endif
		996	#if EV_USE_KQUEUE
		997	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		998	#endif
740	#if EV_USE_EPOLL	999	#if EV_USE_EPOLL
741	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1000	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
742	#endif	1001	#endif
743	#if EV_USE_KQUEUE	1002
744	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1003	if (ev_is_active (&sigev))
745	#endif	1004	{
		1005	/* default loop */
		1006
		1007	ev_ref (EV_A);
		1008	ev_io_stop (EV_A_ &sigev);
		1009	close (sigpipe [0]);
		1010	close (sigpipe [1]);
		1011
		1012	while (pipe (sigpipe))
		1013	syserr ("(libev) error creating pipe");
		1014
		1015	siginit (EV_A);
		1016	}
		1017
		1018	postfork = 0;
746	}	1019	}
747		1020
748	#if EV_MULTIPLICITY	1021	#if EV_MULTIPLICITY
749	struct ev_loop *	1022	struct ev_loop *
750	ev_loop_new (int methods)	1023	ev_loop_new (unsigned int flags)
751	{	1024	{
752	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1025	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
753		1026
754	memset (loop, 0, sizeof (struct ev_loop));	1027	memset (loop, 0, sizeof (struct ev_loop));
755		1028
756	loop_init (EV_A_ methods);	1029	loop_init (EV_A_ flags);
757		1030
758	if (ev_method (EV_A))	1031	if (ev_backend (EV_A))
759	return loop;	1032	return loop;
760		1033
761	return 0;	1034	return 0;
762	}	1035	}
763		1036
…		…
769	}	1042	}
770		1043
771	void	1044	void
772	ev_loop_fork (EV_P)	1045	ev_loop_fork (EV_P)
773	{	1046	{
774	loop_fork (EV_A);	1047	postfork = 1;
775	}	1048	}
776		1049
777	#endif	1050	#endif
778		1051
779	#if EV_MULTIPLICITY	1052	#if EV_MULTIPLICITY
780	struct ev_loop default_loop_struct;
781	static struct ev_loop *default_loop;
782
783	struct ev_loop *	1053	struct ev_loop *
		1054	ev_default_loop_init (unsigned int flags)
784	#else	1055	#else
785	static int default_loop;
786
787	int	1056	int
		1057	ev_default_loop (unsigned int flags)
788	#endif	1058	#endif
789	ev_default_loop (int methods)
790	{	1059	{
791	if (sigpipe [0] == sigpipe [1])	1060	if (sigpipe [0] == sigpipe [1])
792	if (pipe (sigpipe))	1061	if (pipe (sigpipe))
793	return 0;	1062	return 0;
794		1063
795	if (!default_loop)	1064	if (!ev_default_loop_ptr)
796	{	1065	{
797	#if EV_MULTIPLICITY	1066	#if EV_MULTIPLICITY
798	struct ev_loop *loop = default_loop = &default_loop_struct;	1067	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
799	#else	1068	#else
800	default_loop = 1;	1069	ev_default_loop_ptr = 1;
801	#endif	1070	#endif
802		1071
803	loop_init (EV_A_ methods);	1072	loop_init (EV_A_ flags);
804		1073
805	if (ev_method (EV_A))	1074	if (ev_backend (EV_A))
806	{	1075	{
807	ev_watcher_init (&sigev, sigcb);
808	ev_set_priority (&sigev, EV_MAXPRI);
809	siginit (EV_A);	1076	siginit (EV_A);
810		1077
811	#ifndef WIN32	1078	#ifndef _WIN32
812	ev_signal_init (&childev, childcb, SIGCHLD);	1079	ev_signal_init (&childev, childcb, SIGCHLD);
813	ev_set_priority (&childev, EV_MAXPRI);	1080	ev_set_priority (&childev, EV_MAXPRI);
814	ev_signal_start (EV_A_ &childev);	1081	ev_signal_start (EV_A_ &childev);
815	ev_unref (EV_A); /* child watcher should not keep loop alive */	1082	ev_unref (EV_A); /* child watcher should not keep loop alive */
816	#endif	1083	#endif
817	}	1084	}
818	else	1085	else
819	default_loop = 0;	1086	ev_default_loop_ptr = 0;
820	}	1087	}
821		1088
822	return default_loop;	1089	return ev_default_loop_ptr;
823	}	1090	}
824		1091
825	void	1092	void
826	ev_default_destroy (void)	1093	ev_default_destroy (void)
827	{	1094	{
828	#if EV_MULTIPLICITY	1095	#if EV_MULTIPLICITY
829	struct ev_loop *loop = default_loop;	1096	struct ev_loop *loop = ev_default_loop_ptr;
830	#endif	1097	#endif
831		1098
		1099	#ifndef _WIN32
832	ev_ref (EV_A); /* child watcher */	1100	ev_ref (EV_A); /* child watcher */
833	ev_signal_stop (EV_A_ &childev);	1101	ev_signal_stop (EV_A_ &childev);
		1102	#endif
834		1103
835	ev_ref (EV_A); /* signal watcher */	1104	ev_ref (EV_A); /* signal watcher */
836	ev_io_stop (EV_A_ &sigev);	1105	ev_io_stop (EV_A_ &sigev);
837		1106
838	close (sigpipe [0]); sigpipe [0] = 0;	1107	close (sigpipe [0]); sigpipe [0] = 0;
…		…
843		1112
844	void	1113	void
845	ev_default_fork (void)	1114	ev_default_fork (void)
846	{	1115	{
847	#if EV_MULTIPLICITY	1116	#if EV_MULTIPLICITY
848	struct ev_loop *loop = default_loop;	1117	struct ev_loop *loop = ev_default_loop_ptr;
849	#endif	1118	#endif
850		1119
851	loop_fork (EV_A);	1120	if (backend)
852		1121	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	}	1122	}
861		1123
862	/*****************************************************************************/	1124	/*****************************************************************************/
863		1125
864	static void	1126	int inline_size
		1127	any_pending (EV_P)
		1128	{
		1129	int pri;
		1130
		1131	for (pri = NUMPRI; pri--; )
		1132	if (pendingcnt [pri])
		1133	return 1;
		1134
		1135	return 0;
		1136	}
		1137
		1138	void inline_speed
865	call_pending (EV_P)	1139	call_pending (EV_P)
866	{	1140	{
867	int pri;	1141	int pri;
868		1142
869	for (pri = NUMPRI; pri--; )	1143	for (pri = NUMPRI; pri--; )
870	while (pendingcnt [pri])	1144	while (pendingcnt [pri])
871	{	1145	{
872	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1146	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
873		1147
874	if (p->w)	1148	if (expect_true (p->w))
875	{	1149	{
		1150	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1151
876	p->w->pending = 0;	1152	p->w->pending = 0;
877	p->w->cb (EV_A_ p->w, p->events);	1153	EV_CB_INVOKE (p->w, p->events);
878	}	1154	}
879	}	1155	}
880	}	1156	}
881		1157
882	static void	1158	void inline_size
883	timers_reify (EV_P)	1159	timers_reify (EV_P)
884	{	1160	{
885	while (timercnt && ((WT)timers [0])->at <= mn_now)	1161	while (timercnt && ((WT)timers [0])->at <= mn_now)
886	{	1162	{
887	struct ev_timer *w = timers [0];	1163	ev_timer *w = timers [0];
888		1164
889	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1165	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
890		1166
891	/* first reschedule or stop timer */	1167	/* first reschedule or stop timer */
892	if (w->repeat)	1168	if (w->repeat)
893	{	1169	{
894	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1170	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1171
895	((WT)w)->at = mn_now + w->repeat;	1172	((WT)w)->at += w->repeat;
		1173	if (((WT)w)->at < mn_now)
		1174	((WT)w)->at = mn_now;
		1175
896	downheap ((WT *)timers, timercnt, 0);	1176	downheap ((WT *)timers, timercnt, 0);
897	}	1177	}
898	else	1178	else
899	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1179	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
900		1180
901	event (EV_A_ (W)w, EV_TIMEOUT);	1181	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
902	}	1182	}
903	}	1183	}
904		1184
905	static void	1185	#if EV_PERIODIC_ENABLE
		1186	void inline_size
906	periodics_reify (EV_P)	1187	periodics_reify (EV_P)
907	{	1188	{
908	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1189	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
909	{	1190	{
910	struct ev_periodic *w = periodics [0];	1191	ev_periodic *w = periodics [0];
911		1192
912	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1193	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
913		1194
914	/* first reschedule or stop timer */	1195	/* first reschedule or stop timer */
915	if (w->interval)	1196	if (w->reschedule_cb)
916	{	1197	{
		1198	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1199	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1200	downheap ((WT *)periodics, periodiccnt, 0);
		1201	}
		1202	else if (w->interval)
		1203	{
917	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1204	((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));	1205	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);	1206	downheap ((WT *)periodics, periodiccnt, 0);
920	}	1207	}
921	else	1208	else
922	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1209	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
923		1210
924	event (EV_A_ (W)w, EV_PERIODIC);	1211	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
925	}	1212	}
926	}	1213	}
927		1214
928	static void	1215	static void noinline
929	periodics_reschedule (EV_P)	1216	periodics_reschedule (EV_P)
930	{	1217	{
931	int i;	1218	int i;
932		1219
933	/* adjust periodics after time jump */	1220	/* adjust periodics after time jump */
934	for (i = 0; i < periodiccnt; ++i)	1221	for (i = 0; i < periodiccnt; ++i)
935	{	1222	{
936	struct ev_periodic *w = periodics [i];	1223	ev_periodic *w = periodics [i];
937		1224
		1225	if (w->reschedule_cb)
		1226	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
938	if (w->interval)	1227	else if (w->interval)
939	{
940	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1228	((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	}	1229	}
951	}
952		1230
953	inline int	1231	/* now rebuild the heap */
		1232	for (i = periodiccnt >> 1; i--; )
		1233	downheap ((WT *)periodics, periodiccnt, i);
		1234	}
		1235	#endif
		1236
		1237	int inline_size
954	time_update_monotonic (EV_P)	1238	time_update_monotonic (EV_P)
955	{	1239	{
956	mn_now = get_clock ();	1240	mn_now = get_clock ();
957		1241
958	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1242	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
959	{	1243	{
960	rt_now = rtmn_diff + mn_now;	1244	ev_rt_now = rtmn_diff + mn_now;
961	return 0;	1245	return 0;
962	}	1246	}
963	else	1247	else
964	{	1248	{
965	now_floor = mn_now;	1249	now_floor = mn_now;
966	rt_now = ev_time ();	1250	ev_rt_now = ev_time ();
967	return 1;	1251	return 1;
968	}	1252	}
969	}	1253	}
970		1254
971	static void	1255	void inline_size
972	time_update (EV_P)	1256	time_update (EV_P)
973	{	1257	{
974	int i;	1258	int i;
975		1259
976	#if EV_USE_MONOTONIC	1260	#if EV_USE_MONOTONIC
…		…
978	{	1262	{
979	if (time_update_monotonic (EV_A))	1263	if (time_update_monotonic (EV_A))
980	{	1264	{
981	ev_tstamp odiff = rtmn_diff;	1265	ev_tstamp odiff = rtmn_diff;
982		1266
983	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1267	/* loop a few times, before making important decisions.
		1268	* on the choice of "4": one iteration isn't enough,
		1269	* in case we get preempted during the calls to
		1270	* ev_time and get_clock. a second call is almost guarenteed
		1271	* to succeed in that case, though. and looping a few more times
		1272	* doesn't hurt either as we only do this on time-jumps or
		1273	* in the unlikely event of getting preempted here.
		1274	*/
		1275	for (i = 4; --i; )
984	{	1276	{
985	rtmn_diff = rt_now - mn_now;	1277	rtmn_diff = ev_rt_now - mn_now;
986		1278
987	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1279	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
988	return; /* all is well */	1280	return; /* all is well */
989		1281
990	rt_now = ev_time ();	1282	ev_rt_now = ev_time ();
991	mn_now = get_clock ();	1283	mn_now = get_clock ();
992	now_floor = mn_now;	1284	now_floor = mn_now;
993	}	1285	}
994		1286
		1287	# if EV_PERIODIC_ENABLE
995	periodics_reschedule (EV_A);	1288	periodics_reschedule (EV_A);
		1289	# endif
996	/* no timer adjustment, as the monotonic clock doesn't jump */	1290	/* no timer adjustment, as the monotonic clock doesn't jump */
997	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1291	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
998	}	1292	}
999	}	1293	}
1000	else	1294	else
1001	#endif	1295	#endif
1002	{	1296	{
1003	rt_now = ev_time ();	1297	ev_rt_now = ev_time ();
1004		1298
1005	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1299	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1006	{	1300	{
		1301	#if EV_PERIODIC_ENABLE
1007	periodics_reschedule (EV_A);	1302	periodics_reschedule (EV_A);
		1303	#endif
1008		1304
1009	/* adjust timers. this is easy, as the offset is the same for all */	1305	/* adjust timers. this is easy, as the offset is the same for all */
1010	for (i = 0; i < timercnt; ++i)	1306	for (i = 0; i < timercnt; ++i)
1011	((WT)timers [i])->at += rt_now - mn_now;	1307	((WT)timers [i])->at += ev_rt_now - mn_now;
1012	}	1308	}
1013		1309
1014	mn_now = rt_now;	1310	mn_now = ev_rt_now;
1015	}	1311	}
1016	}	1312	}
1017		1313
1018	void	1314	void
1019	ev_ref (EV_P)	1315	ev_ref (EV_P)
…		…
1030	static int loop_done;	1326	static int loop_done;
1031		1327
1032	void	1328	void
1033	ev_loop (EV_P_ int flags)	1329	ev_loop (EV_P_ int flags)
1034	{	1330	{
1035	double block;
1036	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1331	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1332	? EVUNLOOP_ONE
		1333	: EVUNLOOP_CANCEL;
1037		1334
1038	do	1335	while (activecnt)
1039	{	1336	{
		1337	/* we might have forked, so reify kernel state if necessary */
		1338	#if EV_FORK_ENABLE
		1339	if (expect_false (postfork))
		1340	if (forkcnt)
		1341	{
		1342	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1343	call_pending (EV_A);
		1344	}
		1345	#endif
		1346
1040	/* queue check watchers (and execute them) */	1347	/* queue check watchers (and execute them) */
1041	if (expect_false (preparecnt))	1348	if (expect_false (preparecnt))
1042	{	1349	{
1043	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1350	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1044	call_pending (EV_A);	1351	call_pending (EV_A);
1045	}	1352	}
1046		1353
		1354	/* we might have forked, so reify kernel state if necessary */
		1355	if (expect_false (postfork))
		1356	loop_fork (EV_A);
		1357
1047	/* update fd-related kernel structures */	1358	/* update fd-related kernel structures */
1048	fd_reify (EV_A);	1359	fd_reify (EV_A);
1049		1360
1050	/* calculate blocking time */	1361	/* calculate blocking time */
		1362	{
		1363	double block;
1051		1364
1052	/* we only need this for !monotonic clockor timers, but as we basically	1365	if (flags & EVLOOP_NONBLOCK || idlecnt)
1053	always have timers, we just calculate it always */	1366	block = 0.; /* do not block at all */
		1367	else
		1368	{
		1369	/* update time to cancel out callback processing overhead */
1054	#if EV_USE_MONOTONIC	1370	#if EV_USE_MONOTONIC
1055	if (expect_true (have_monotonic))	1371	if (expect_true (have_monotonic))
1056	time_update_monotonic (EV_A);	1372	time_update_monotonic (EV_A);
1057	else	1373	else
1058	#endif	1374	#endif
1059	{	1375	{
1060	rt_now = ev_time ();	1376	ev_rt_now = ev_time ();
1061	mn_now = rt_now;	1377	mn_now = ev_rt_now;
1062	}	1378	}
1063		1379
1064	if (flags & EVLOOP_NONBLOCK || idlecnt)
1065	block = 0.;
1066	else
1067	{
1068	block = MAX_BLOCKTIME;	1380	block = MAX_BLOCKTIME;
1069		1381
1070	if (timercnt)	1382	if (timercnt)
1071	{	1383	{
1072	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1384	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1073	if (block > to) block = to;	1385	if (block > to) block = to;
1074	}	1386	}
1075		1387
		1388	#if EV_PERIODIC_ENABLE
1076	if (periodiccnt)	1389	if (periodiccnt)
1077	{	1390	{
1078	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1391	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1079	if (block > to) block = to;	1392	if (block > to) block = to;
1080	}	1393	}
		1394	#endif
1081		1395
1082	if (block < 0.) block = 0.;	1396	if (expect_false (block < 0.)) block = 0.;
1083	}	1397	}
1084		1398
1085	method_poll (EV_A_ block);	1399	backend_poll (EV_A_ block);
		1400	}
1086		1401
1087	/* update rt_now, do magic */	1402	/* update ev_rt_now, do magic */
1088	time_update (EV_A);	1403	time_update (EV_A);
1089		1404
1090	/* queue pending timers and reschedule them */	1405	/* queue pending timers and reschedule them */
1091	timers_reify (EV_A); /* relative timers called last */	1406	timers_reify (EV_A); /* relative timers called last */
		1407	#if EV_PERIODIC_ENABLE
1092	periodics_reify (EV_A); /* absolute timers called first */	1408	periodics_reify (EV_A); /* absolute timers called first */
		1409	#endif
1093		1410
1094	/* queue idle watchers unless io or timers are pending */	1411	/* queue idle watchers unless other events are pending */
1095	if (!pendingcnt)	1412	if (idlecnt && !any_pending (EV_A))
1096	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1413	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1097		1414
1098	/* queue check watchers, to be executed first */	1415	/* queue check watchers, to be executed first */
1099	if (checkcnt)	1416	if (expect_false (checkcnt))
1100	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1417	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1101		1418
1102	call_pending (EV_A);	1419	call_pending (EV_A);
1103	}
1104	while (activecnt && !loop_done);
1105		1420
1106	if (loop_done != 2)	1421	if (expect_false (loop_done))
1107	loop_done = 0;	1422	break;
		1423	}
		1424
		1425	if (loop_done == EVUNLOOP_ONE)
		1426	loop_done = EVUNLOOP_CANCEL;
1108	}	1427	}
1109		1428
1110	void	1429	void
1111	ev_unloop (EV_P_ int how)	1430	ev_unloop (EV_P_ int how)
1112	{	1431	{
1113	loop_done = how;	1432	loop_done = how;
1114	}	1433	}
1115		1434
1116	/*****************************************************************************/	1435	/*****************************************************************************/
1117		1436
1118	inline void	1437	void inline_size
1119	wlist_add (WL *head, WL elem)	1438	wlist_add (WL *head, WL elem)
1120	{	1439	{
1121	elem->next = *head;	1440	elem->next = *head;
1122	*head = elem;	1441	*head = elem;
1123	}	1442	}
1124		1443
1125	inline void	1444	void inline_size
1126	wlist_del (WL *head, WL elem)	1445	wlist_del (WL *head, WL elem)
1127	{	1446	{
1128	while (*head)	1447	while (*head)
1129	{	1448	{
1130	if (*head == elem)	1449	if (*head == elem)
…		…
1135		1454
1136	head = &(*head)->next;	1455	head = &(*head)->next;
1137	}	1456	}
1138	}	1457	}
1139		1458
1140	inline void	1459	void inline_speed
1141	ev_clear_pending (EV_P_ W w)	1460	ev_clear_pending (EV_P_ W w)
1142	{	1461	{
1143	if (w->pending)	1462	if (w->pending)
1144	{	1463	{
1145	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1464	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1146	w->pending = 0;	1465	w->pending = 0;
1147	}	1466	}
1148	}	1467	}
1149		1468
1150	inline void	1469	void inline_speed
1151	ev_start (EV_P_ W w, int active)	1470	ev_start (EV_P_ W w, int active)
1152	{	1471	{
1153	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1472	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1154	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1473	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1155		1474
1156	w->active = active;	1475	w->active = active;
1157	ev_ref (EV_A);	1476	ev_ref (EV_A);
1158	}	1477	}
1159		1478
1160	inline void	1479	void inline_size
1161	ev_stop (EV_P_ W w)	1480	ev_stop (EV_P_ W w)
1162	{	1481	{
1163	ev_unref (EV_A);	1482	ev_unref (EV_A);
1164	w->active = 0;	1483	w->active = 0;
1165	}	1484	}
1166		1485
1167	/*****************************************************************************/	1486	/*****************************************************************************/
1168		1487
1169	void	1488	void
1170	ev_io_start (EV_P_ struct ev_io *w)	1489	ev_io_start (EV_P_ ev_io *w)
1171	{	1490	{
1172	int fd = w->fd;	1491	int fd = w->fd;
1173		1492
1174	if (ev_is_active (w))	1493	if (expect_false (ev_is_active (w)))
1175	return;	1494	return;
1176		1495
1177	assert (("ev_io_start called with negative fd", fd >= 0));	1496	assert (("ev_io_start called with negative fd", fd >= 0));
1178		1497
1179	ev_start (EV_A_ (W)w, 1);	1498	ev_start (EV_A_ (W)w, 1);
1180	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1499	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1181	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1500	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1182		1501
1183	fd_change (EV_A_ fd);	1502	fd_change (EV_A_ fd);
1184	}	1503	}
1185		1504
1186	void	1505	void
1187	ev_io_stop (EV_P_ struct ev_io *w)	1506	ev_io_stop (EV_P_ ev_io *w)
1188	{	1507	{
1189	ev_clear_pending (EV_A_ (W)w);	1508	ev_clear_pending (EV_A_ (W)w);
1190	if (!ev_is_active (w))	1509	if (expect_false (!ev_is_active (w)))
1191	return;	1510	return;
		1511
		1512	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1192		1513
1193	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1514	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1194	ev_stop (EV_A_ (W)w);	1515	ev_stop (EV_A_ (W)w);
1195		1516
1196	fd_change (EV_A_ w->fd);	1517	fd_change (EV_A_ w->fd);
1197	}	1518	}
1198		1519
1199	void	1520	void
1200	ev_timer_start (EV_P_ struct ev_timer *w)	1521	ev_timer_start (EV_P_ ev_timer *w)
1201	{	1522	{
1202	if (ev_is_active (w))	1523	if (expect_false (ev_is_active (w)))
1203	return;	1524	return;
1204		1525
1205	((WT)w)->at += mn_now;	1526	((WT)w)->at += mn_now;
1206		1527
1207	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1528	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1208		1529
1209	ev_start (EV_A_ (W)w, ++timercnt);	1530	ev_start (EV_A_ (W)w, ++timercnt);
1210	array_needsize (timers, timermax, timercnt, );	1531	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1211	timers [timercnt - 1] = w;	1532	timers [timercnt - 1] = w;
1212	upheap ((WT *)timers, timercnt - 1);	1533	upheap ((WT *)timers, timercnt - 1);
1213		1534
		1535	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1536	}
		1537
		1538	void
		1539	ev_timer_stop (EV_P_ ev_timer *w)
		1540	{
		1541	ev_clear_pending (EV_A_ (W)w);
		1542	if (expect_false (!ev_is_active (w)))
		1543	return;
		1544
1214	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1545	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1215	}
1216		1546
1217	void	1547	{
1218	ev_timer_stop (EV_P_ struct ev_timer *w)	1548	int active = ((W)w)->active;
1219	{
1220	ev_clear_pending (EV_A_ (W)w);
1221	if (!ev_is_active (w))
1222	return;
1223		1549
1224	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1550	if (expect_true (--active < --timercnt))
1225
1226	if (((W)w)->active < timercnt--)
1227	{	1551	{
1228	timers [((W)w)->active - 1] = timers [timercnt];	1552	timers [active] = timers [timercnt];
1229	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1553	adjustheap ((WT *)timers, timercnt, active);
1230	}	1554	}
		1555	}
1231		1556
1232	((WT)w)->at = w->repeat;	1557	((WT)w)->at -= mn_now;
1233		1558
1234	ev_stop (EV_A_ (W)w);	1559	ev_stop (EV_A_ (W)w);
1235	}	1560	}
1236		1561
1237	void	1562	void
1238	ev_timer_again (EV_P_ struct ev_timer *w)	1563	ev_timer_again (EV_P_ ev_timer *w)
1239	{	1564	{
1240	if (ev_is_active (w))	1565	if (ev_is_active (w))
1241	{	1566	{
1242	if (w->repeat)	1567	if (w->repeat)
1243	{	1568	{
1244	((WT)w)->at = mn_now + w->repeat;	1569	((WT)w)->at = mn_now + w->repeat;
1245	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1570	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1246	}	1571	}
1247	else	1572	else
1248	ev_timer_stop (EV_A_ w);	1573	ev_timer_stop (EV_A_ w);
1249	}	1574	}
1250	else if (w->repeat)	1575	else if (w->repeat)
		1576	{
		1577	w->at = w->repeat;
1251	ev_timer_start (EV_A_ w);	1578	ev_timer_start (EV_A_ w);
		1579	}
1252	}	1580	}
1253		1581
		1582	#if EV_PERIODIC_ENABLE
1254	void	1583	void
1255	ev_periodic_start (EV_P_ struct ev_periodic *w)	1584	ev_periodic_start (EV_P_ ev_periodic *w)
1256	{	1585	{
1257	if (ev_is_active (w))	1586	if (expect_false (ev_is_active (w)))
1258	return;	1587	return;
1259		1588
		1589	if (w->reschedule_cb)
		1590	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1591	else if (w->interval)
		1592	{
1260	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1593	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 */	1594	/* 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;	1595	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1596	}
1265		1597
1266	ev_start (EV_A_ (W)w, ++periodiccnt);	1598	ev_start (EV_A_ (W)w, ++periodiccnt);
1267	array_needsize (periodics, periodicmax, periodiccnt, );	1599	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1268	periodics [periodiccnt - 1] = w;	1600	periodics [periodiccnt - 1] = w;
1269	upheap ((WT *)periodics, periodiccnt - 1);	1601	upheap ((WT *)periodics, periodiccnt - 1);
1270		1602
		1603	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1604	}
		1605
		1606	void
		1607	ev_periodic_stop (EV_P_ ev_periodic *w)
		1608	{
		1609	ev_clear_pending (EV_A_ (W)w);
		1610	if (expect_false (!ev_is_active (w)))
		1611	return;
		1612
1271	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1613	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1272	}
1273		1614
1274	void	1615	{
1275	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1616	int active = ((W)w)->active;
1276	{
1277	ev_clear_pending (EV_A_ (W)w);
1278	if (!ev_is_active (w))
1279	return;
1280		1617
1281	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1618	if (expect_true (--active < --periodiccnt))
1282
1283	if (((W)w)->active < periodiccnt--)
1284	{	1619	{
1285	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1620	periodics [active] = periodics [periodiccnt];
1286	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1621	adjustheap ((WT *)periodics, periodiccnt, active);
1287	}	1622	}
		1623	}
1288		1624
1289	ev_stop (EV_A_ (W)w);	1625	ev_stop (EV_A_ (W)w);
1290	}	1626	}
1291		1627
1292	void	1628	void
1293	ev_idle_start (EV_P_ struct ev_idle *w)	1629	ev_periodic_again (EV_P_ ev_periodic *w)
1294	{	1630	{
1295	if (ev_is_active (w))	1631	/* 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);	1632	ev_periodic_stop (EV_A_ w);
		1633	ev_periodic_start (EV_A_ w);
1312	}	1634	}
1313		1635	#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		1636
1358	#ifndef SA_RESTART	1637	#ifndef SA_RESTART
1359	# define SA_RESTART 0	1638	# define SA_RESTART 0
1360	#endif	1639	#endif
1361		1640
1362	void	1641	void
1363	ev_signal_start (EV_P_ struct ev_signal *w)	1642	ev_signal_start (EV_P_ ev_signal *w)
1364	{	1643	{
1365	#if EV_MULTIPLICITY	1644	#if EV_MULTIPLICITY
1366	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1645	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1367	#endif	1646	#endif
1368	if (ev_is_active (w))	1647	if (expect_false (ev_is_active (w)))
1369	return;	1648	return;
1370		1649
1371	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1650	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1372		1651
1373	ev_start (EV_A_ (W)w, 1);	1652	ev_start (EV_A_ (W)w, 1);
1374	array_needsize (signals, signalmax, w->signum, signals_init);	1653	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1375	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1654	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1376		1655
1377	if (!((WL)w)->next)	1656	if (!((WL)w)->next)
1378	{	1657	{
1379	#if WIN32	1658	#if _WIN32
1380	signal (w->signum, sighandler);	1659	signal (w->signum, sighandler);
1381	#else	1660	#else
1382	struct sigaction sa;	1661	struct sigaction sa;
1383	sa.sa_handler = sighandler;	1662	sa.sa_handler = sighandler;
1384	sigfillset (&sa.sa_mask);	1663	sigfillset (&sa.sa_mask);
…		…
1387	#endif	1666	#endif
1388	}	1667	}
1389	}	1668	}
1390		1669
1391	void	1670	void
1392	ev_signal_stop (EV_P_ struct ev_signal *w)	1671	ev_signal_stop (EV_P_ ev_signal *w)
1393	{	1672	{
1394	ev_clear_pending (EV_A_ (W)w);	1673	ev_clear_pending (EV_A_ (W)w);
1395	if (!ev_is_active (w))	1674	if (expect_false (!ev_is_active (w)))
1396	return;	1675	return;
1397		1676
1398	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1677	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1399	ev_stop (EV_A_ (W)w);	1678	ev_stop (EV_A_ (W)w);
1400		1679
1401	if (!signals [w->signum - 1].head)	1680	if (!signals [w->signum - 1].head)
1402	signal (w->signum, SIG_DFL);	1681	signal (w->signum, SIG_DFL);
1403	}	1682	}
1404		1683
1405	void	1684	void
1406	ev_child_start (EV_P_ struct ev_child *w)	1685	ev_child_start (EV_P_ ev_child *w)
1407	{	1686	{
1408	#if EV_MULTIPLICITY	1687	#if EV_MULTIPLICITY
1409	assert (("child watchers are only supported in the default loop", loop == default_loop));	1688	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1410	#endif	1689	#endif
1411	if (ev_is_active (w))	1690	if (expect_false (ev_is_active (w)))
1412	return;	1691	return;
1413		1692
1414	ev_start (EV_A_ (W)w, 1);	1693	ev_start (EV_A_ (W)w, 1);
1415	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1694	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1416	}	1695	}
1417		1696
1418	void	1697	void
1419	ev_child_stop (EV_P_ struct ev_child *w)	1698	ev_child_stop (EV_P_ ev_child *w)
1420	{	1699	{
1421	ev_clear_pending (EV_A_ (W)w);	1700	ev_clear_pending (EV_A_ (W)w);
1422	if (ev_is_active (w))	1701	if (expect_false (!ev_is_active (w)))
1423	return;	1702	return;
1424		1703
1425	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1704	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1426	ev_stop (EV_A_ (W)w);	1705	ev_stop (EV_A_ (W)w);
1427	}	1706	}
1428		1707
		1708	#if EV_STAT_ENABLE
		1709
		1710	# ifdef _WIN32
		1711	# undef lstat
		1712	# define lstat(a,b) _stati64 (a,b)
		1713	# endif
		1714
		1715	#define DEF_STAT_INTERVAL 5.0074891
		1716	#define MIN_STAT_INTERVAL 0.1074891
		1717
		1718	void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1719
		1720	#if EV_USE_INOTIFY
		1721	# define EV_INOTIFY_BUFSIZE ((PATH_MAX + sizeof (struct inotify_event)) + 2048)
		1722
		1723	static void noinline
		1724	infy_add (EV_P_ ev_stat *w)
		1725	{
		1726	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);
		1727
		1728	if (w->wd < 0)
		1729	{
		1730	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1731
		1732	/* monitor some parent directory for speedup hints */
		1733	if (errno == ENOENT || errno == EACCES)
		1734	{
		1735	char path [PATH_MAX];
		1736	strcpy (path, w->path);
		1737
		1738	do
		1739	{
		1740	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1741	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1742
		1743	char *pend = strrchr (path, '/');
		1744
		1745	if (!pend)
		1746	break; /* whoops, no '/', complain to your admin */
		1747
		1748	*pend = 0;
		1749	w->wd = inotify_add_watch (fs_fd, path, IN_DELETE_SELF | IN_CREATE | IN_MOVED_TO | IN_MASK_ADD);
		1750	}
		1751	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1752	}
		1753	}
		1754	else
		1755	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1756
		1757	if (w->wd >= 0)
		1758	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1759	}
		1760
		1761	static void noinline
		1762	infy_del (EV_P_ ev_stat *w)
		1763	{
		1764	WL w_;
		1765	int slot;
		1766	int wd = w->wd;
		1767
		1768	if (wd < 0)
		1769	return;
		1770
		1771	w->wd = -2;
		1772	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1773	wlist_del (&fs_hash [slot].head, (WL)w);
		1774
		1775	/* remove this watcher, if others are watching it, they will rearm */
		1776	inotify_rm_watch (fs_fd, wd);
		1777	}
		1778
		1779	static void noinline
		1780	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1781	{
		1782	if (slot < 0)
		1783	/* overflow, need to check for all hahs slots */
		1784	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1785	infy_wd (EV_A_ slot, wd, ev);
		1786	else
		1787	{
		1788	WL w_;
		1789
		1790	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1791	{
		1792	ev_stat *w = (ev_stat *)w_;
		1793	w_ = w_->next; /* lets us remove this watcher and all before it */
		1794
		1795	if (w->wd == wd || wd == -1)
		1796	{
		1797	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1798	{
		1799	w->wd = -1;
		1800	infy_add (EV_A_ w); /* re-add, no matter what */
		1801	}
		1802
		1803	stat_timer_cb (EV_P_ &w->timer, 0);
		1804	}
		1805	}
		1806	}
		1807	}
		1808
		1809	static void
		1810	infy_cb (EV_P_ ev_io *w, int revents)
		1811	{
		1812	char buf [EV_INOTIFY_BUFSIZE];
		1813	struct inotify_event *ev = (struct inotify_event *)buf;
		1814	int ofs;
		1815	int len = read (fs_fd, buf, sizeof (buf));
		1816
		1817	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1818	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1819	}
		1820
		1821	void inline_size
		1822	infy_init (EV_P)
		1823	{
		1824	if (fs_fd != -2)
		1825	return;
		1826
		1827	fs_fd = inotify_init ();
		1828
		1829	if (fs_fd >= 0)
		1830	{
		1831	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1832	ev_set_priority (&fs_w, EV_MAXPRI);
		1833	ev_io_start (EV_A_ &fs_w);
		1834	}
		1835	}
		1836
		1837	#endif
		1838
		1839	void
		1840	ev_stat_stat (EV_P_ ev_stat *w)
		1841	{
		1842	if (lstat (w->path, &w->attr) < 0)
		1843	w->attr.st_nlink = 0;
		1844	else if (!w->attr.st_nlink)
		1845	w->attr.st_nlink = 1;
		1846	}
		1847
		1848	void noinline
		1849	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1850	{
		1851	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1852
		1853	/* we copy this here each the time so that */
		1854	/* prev has the old value when the callback gets invoked */
		1855	w->prev = w->attr;
		1856	ev_stat_stat (EV_A_ w);
		1857
		1858	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1859	{
		1860	#if EV_USE_INOTIFY
		1861	infy_del (EV_A_ w);
		1862	infy_add (EV_A_ w);
		1863	ev_stat_stat (EV_A_ w); /* avoid race... */
		1864	#endif
		1865
		1866	ev_feed_event (EV_A_ w, EV_STAT);
		1867	}
		1868	}
		1869
		1870	void
		1871	ev_stat_start (EV_P_ ev_stat *w)
		1872	{
		1873	if (expect_false (ev_is_active (w)))
		1874	return;
		1875
		1876	/* since we use memcmp, we need to clear any padding data etc. */
		1877	memset (&w->prev, 0, sizeof (ev_statdata));
		1878	memset (&w->attr, 0, sizeof (ev_statdata));
		1879
		1880	ev_stat_stat (EV_A_ w);
		1881
		1882	if (w->interval < MIN_STAT_INTERVAL)
		1883	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1884
		1885	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1886	ev_set_priority (&w->timer, ev_priority (w));
		1887
		1888	#if EV_USE_INOTIFY
		1889	infy_init (EV_A);
		1890
		1891	if (fs_fd >= 0)
		1892	infy_add (EV_A_ w);
		1893	else
		1894	#endif
		1895	ev_timer_start (EV_A_ &w->timer);
		1896
		1897	ev_start (EV_A_ (W)w, 1);
		1898	}
		1899
		1900	void
		1901	ev_stat_stop (EV_P_ ev_stat *w)
		1902	{
		1903	ev_clear_pending (EV_A_ (W)w);
		1904	if (expect_false (!ev_is_active (w)))
		1905	return;
		1906
		1907	#if EV_USE_INOTIFY
		1908	infy_del (EV_A_ w);
		1909	#endif
		1910	ev_timer_stop (EV_A_ &w->timer);
		1911
		1912	ev_stop (EV_A_ (W)w);
		1913	}
		1914	#endif
		1915
		1916	void
		1917	ev_idle_start (EV_P_ ev_idle *w)
		1918	{
		1919	if (expect_false (ev_is_active (w)))
		1920	return;
		1921
		1922	ev_start (EV_A_ (W)w, ++idlecnt);
		1923	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1924	idles [idlecnt - 1] = w;
		1925	}
		1926
		1927	void
		1928	ev_idle_stop (EV_P_ ev_idle *w)
		1929	{
		1930	ev_clear_pending (EV_A_ (W)w);
		1931	if (expect_false (!ev_is_active (w)))
		1932	return;
		1933
		1934	{
		1935	int active = ((W)w)->active;
		1936	idles [active - 1] = idles [--idlecnt];
		1937	((W)idles [active - 1])->active = active;
		1938	}
		1939
		1940	ev_stop (EV_A_ (W)w);
		1941	}
		1942
		1943	void
		1944	ev_prepare_start (EV_P_ ev_prepare *w)
		1945	{
		1946	if (expect_false (ev_is_active (w)))
		1947	return;
		1948
		1949	ev_start (EV_A_ (W)w, ++preparecnt);
		1950	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1951	prepares [preparecnt - 1] = w;
		1952	}
		1953
		1954	void
		1955	ev_prepare_stop (EV_P_ ev_prepare *w)
		1956	{
		1957	ev_clear_pending (EV_A_ (W)w);
		1958	if (expect_false (!ev_is_active (w)))
		1959	return;
		1960
		1961	{
		1962	int active = ((W)w)->active;
		1963	prepares [active - 1] = prepares [--preparecnt];
		1964	((W)prepares [active - 1])->active = active;
		1965	}
		1966
		1967	ev_stop (EV_A_ (W)w);
		1968	}
		1969
		1970	void
		1971	ev_check_start (EV_P_ ev_check *w)
		1972	{
		1973	if (expect_false (ev_is_active (w)))
		1974	return;
		1975
		1976	ev_start (EV_A_ (W)w, ++checkcnt);
		1977	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1978	checks [checkcnt - 1] = w;
		1979	}
		1980
		1981	void
		1982	ev_check_stop (EV_P_ ev_check *w)
		1983	{
		1984	ev_clear_pending (EV_A_ (W)w);
		1985	if (expect_false (!ev_is_active (w)))
		1986	return;
		1987
		1988	{
		1989	int active = ((W)w)->active;
		1990	checks [active - 1] = checks [--checkcnt];
		1991	((W)checks [active - 1])->active = active;
		1992	}
		1993
		1994	ev_stop (EV_A_ (W)w);
		1995	}
		1996
		1997	#if EV_EMBED_ENABLE
		1998	void noinline
		1999	ev_embed_sweep (EV_P_ ev_embed *w)
		2000	{
		2001	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2002	}
		2003
		2004	static void
		2005	embed_cb (EV_P_ ev_io *io, int revents)
		2006	{
		2007	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2008
		2009	if (ev_cb (w))
		2010	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2011	else
		2012	ev_embed_sweep (loop, w);
		2013	}
		2014
		2015	void
		2016	ev_embed_start (EV_P_ ev_embed *w)
		2017	{
		2018	if (expect_false (ev_is_active (w)))
		2019	return;
		2020
		2021	{
		2022	struct ev_loop *loop = w->loop;
		2023	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2024	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2025	}
		2026
		2027	ev_set_priority (&w->io, ev_priority (w));
		2028	ev_io_start (EV_A_ &w->io);
		2029
		2030	ev_start (EV_A_ (W)w, 1);
		2031	}
		2032
		2033	void
		2034	ev_embed_stop (EV_P_ ev_embed *w)
		2035	{
		2036	ev_clear_pending (EV_A_ (W)w);
		2037	if (expect_false (!ev_is_active (w)))
		2038	return;
		2039
		2040	ev_io_stop (EV_A_ &w->io);
		2041
		2042	ev_stop (EV_A_ (W)w);
		2043	}
		2044	#endif
		2045
		2046	#if EV_FORK_ENABLE
		2047	void
		2048	ev_fork_start (EV_P_ ev_fork *w)
		2049	{
		2050	if (expect_false (ev_is_active (w)))
		2051	return;
		2052
		2053	ev_start (EV_A_ (W)w, ++forkcnt);
		2054	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2055	forks [forkcnt - 1] = w;
		2056	}
		2057
		2058	void
		2059	ev_fork_stop (EV_P_ ev_fork *w)
		2060	{
		2061	ev_clear_pending (EV_A_ (W)w);
		2062	if (expect_false (!ev_is_active (w)))
		2063	return;
		2064
		2065	{
		2066	int active = ((W)w)->active;
		2067	forks [active - 1] = forks [--forkcnt];
		2068	((W)forks [active - 1])->active = active;
		2069	}
		2070
		2071	ev_stop (EV_A_ (W)w);
		2072	}
		2073	#endif
		2074
1429	/*****************************************************************************/	2075	/*****************************************************************************/
1430		2076
1431	struct ev_once	2077	struct ev_once
1432	{	2078	{
1433	struct ev_io io;	2079	ev_io io;
1434	struct ev_timer to;	2080	ev_timer to;
1435	void (*cb)(int revents, void *arg);	2081	void (*cb)(int revents, void *arg);
1436	void *arg;	2082	void *arg;
1437	};	2083	};
1438		2084
1439	static void	2085	static void
…		…
1448		2094
1449	cb (revents, arg);	2095	cb (revents, arg);
1450	}	2096	}
1451		2097
1452	static void	2098	static void
1453	once_cb_io (EV_P_ struct ev_io *w, int revents)	2099	once_cb_io (EV_P_ ev_io *w, int revents)
1454	{	2100	{
1455	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2101	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1456	}	2102	}
1457		2103
1458	static void	2104	static void
1459	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2105	once_cb_to (EV_P_ ev_timer *w, int revents)
1460	{	2106	{
1461	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2107	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1462	}	2108	}
1463		2109
1464	void	2110	void
1465	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2111	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1466	{	2112	{
1467	struct ev_once *once = ev_malloc (sizeof (struct ev_once));	2113	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1468		2114
1469	if (!once)	2115	if (expect_false (!once))
		2116	{
1470	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2117	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1471	else	2118	return;
1472	{	2119	}
		2120
1473	once->cb = cb;	2121	once->cb = cb;
1474	once->arg = arg;	2122	once->arg = arg;
1475		2123
1476	ev_watcher_init (&once->io, once_cb_io);	2124	ev_init (&once->io, once_cb_io);
1477	if (fd >= 0)	2125	if (fd >= 0)
1478	{	2126	{
1479	ev_io_set (&once->io, fd, events);	2127	ev_io_set (&once->io, fd, events);
1480	ev_io_start (EV_A_ &once->io);	2128	ev_io_start (EV_A_ &once->io);
1481	}	2129	}
1482		2130
1483	ev_watcher_init (&once->to, once_cb_to);	2131	ev_init (&once->to, once_cb_to);
1484	if (timeout >= 0.)	2132	if (timeout >= 0.)
1485	{	2133	{
1486	ev_timer_set (&once->to, timeout, 0.);	2134	ev_timer_set (&once->to, timeout, 0.);
1487	ev_timer_start (EV_A_ &once->to);	2135	ev_timer_start (EV_A_ &once->to);
1488	}
1489	}	2136	}
1490	}	2137	}
1491		2138
		2139	#ifdef __cplusplus
		2140	}
		2141	#endif
		2142

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