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Comparing libev/ev.c (file contents):
Revision 1.61 by root, Sun Nov 4 19:45:09 2007 UTC vs.
Revision 1.169 by root, Sat Dec 8 14:27:39 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
97	#ifndef EV_USE_REALTIME	171	#ifndef EV_USE_PORT
98	# define EV_USE_REALTIME 1	172	# define EV_USE_PORT 0
		173	#endif
		174
		175	#ifndef EV_USE_INOTIFY
		176	# define EV_USE_INOTIFY 0
		177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
		182	# else
		183	# define EV_PID_HASHSIZE 16
		184	# endif
		185	#endif
		186
		187	#ifndef EV_INOTIFY_HASHSIZE
		188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
99	#endif	193	#endif
100		194
101	/**/	195	/**/
102		196
103	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
…		…
108	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
109	# undef EV_USE_REALTIME	203	# undef EV_USE_REALTIME
110	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
111	#endif	205	#endif
112		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
113	/**/	219	/**/
114		220
115	#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) */
116	#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) */
117	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
118	/*#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 */
119
120	#include "ev.h"
121		224
122	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
123	# define expect(expr,value) __builtin_expect ((expr),(value))	226	# define expect(expr,value) __builtin_expect ((expr),(value))
124	# define inline inline	227	# define noinline __attribute__ ((noinline))
125	#else	228	#else
126	# define expect(expr,value) (expr)	229	# define expect(expr,value) (expr)
127	# define inline static	230	# define noinline
		231	# if __STDC_VERSION__ < 199901L
		232	# define inline
		233	# endif
128	#endif	234	#endif
129		235
130	#define expect_false(expr) expect ((expr) != 0, 0)	236	#define expect_false(expr) expect ((expr) != 0, 0)
131	#define expect_true(expr) expect ((expr) != 0, 1)	237	#define expect_true(expr) expect ((expr) != 0, 1)
		238	#define inline_size static inline
		239
		240	#if EV_MINIMAL
		241	# define inline_speed static noinline
		242	#else
		243	# define inline_speed static inline
		244	#endif
132		245
133	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	246	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
134	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	247	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
135		248
		249	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		250	#define EMPTY2(a,b) /* used to suppress some warnings */
		251
136	typedef struct ev_watcher *W;	252	typedef ev_watcher *W;
137	typedef struct ev_watcher_list *WL;	253	typedef ev_watcher_list *WL;
138	typedef struct ev_watcher_time *WT;	254	typedef ev_watcher_time *WT;
139		255
140	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	256	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
141		257
		258	#ifdef _WIN32
		259	# include "ev_win32.c"
		260	#endif
		261
142	/*****************************************************************************/	262	/*****************************************************************************/
143		263
		264	static void (*syserr_cb)(const char *msg);
		265
		266	void
		267	ev_set_syserr_cb (void (*cb)(const char *msg))
		268	{
		269	syserr_cb = cb;
		270	}
		271
		272	static void noinline
		273	syserr (const char *msg)
		274	{
		275	if (!msg)
		276	msg = "(libev) system error";
		277
		278	if (syserr_cb)
		279	syserr_cb (msg);
		280	else
		281	{
		282	perror (msg);
		283	abort ();
		284	}
		285	}
		286
		287	static void *(*alloc)(void *ptr, long size);
		288
		289	void
		290	ev_set_allocator (void *(*cb)(void *ptr, long size))
		291	{
		292	alloc = cb;
		293	}
		294
		295	inline_speed void *
		296	ev_realloc (void *ptr, long size)
		297	{
		298	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		299
		300	if (!ptr && size)
		301	{
		302	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		303	abort ();
		304	}
		305
		306	return ptr;
		307	}
		308
		309	#define ev_malloc(size) ev_realloc (0, (size))
		310	#define ev_free(ptr) ev_realloc ((ptr), 0)
		311
		312	/*****************************************************************************/
		313
144	typedef struct	314	typedef struct
145	{	315	{
146	struct ev_watcher_list *head;	316	WL head;
147	unsigned char events;	317	unsigned char events;
148	unsigned char reify;	318	unsigned char reify;
		319	#if EV_SELECT_IS_WINSOCKET
		320	SOCKET handle;
		321	#endif
149	} ANFD;	322	} ANFD;
150		323
151	typedef struct	324	typedef struct
152	{	325	{
153	W w;	326	W w;
154	int events;	327	int events;
155	} ANPENDING;	328	} ANPENDING;
156		329
		330	#if EV_USE_INOTIFY
		331	typedef struct
		332	{
		333	WL head;
		334	} ANFS;
		335	#endif
		336
157	#if EV_MULTIPLICITY	337	#if EV_MULTIPLICITY
158		338
159	struct ev_loop	339	struct ev_loop
160	{	340	{
		341	ev_tstamp ev_rt_now;
		342	#define ev_rt_now ((loop)->ev_rt_now)
161	# define VAR(name,decl) decl;	343	#define VAR(name,decl) decl;
162	# include "ev_vars.h"	344	#include "ev_vars.h"
163	};
164	# undef VAR	345	#undef VAR
		346	};
165	# include "ev_wrap.h"	347	#include "ev_wrap.h"
		348
		349	static struct ev_loop default_loop_struct;
		350	struct ev_loop *ev_default_loop_ptr;
166		351
167	#else	352	#else
168		353
		354	ev_tstamp ev_rt_now;
169	# define VAR(name,decl) static decl;	355	#define VAR(name,decl) static decl;
170	# include "ev_vars.h"	356	#include "ev_vars.h"
171	# undef VAR	357	#undef VAR
		358
		359	static int ev_default_loop_ptr;
172		360
173	#endif	361	#endif
174		362
175	/*****************************************************************************/	363	/*****************************************************************************/
176		364
177	inline ev_tstamp	365	ev_tstamp
178	ev_time (void)	366	ev_time (void)
179	{	367	{
180	#if EV_USE_REALTIME	368	#if EV_USE_REALTIME
181	struct timespec ts;	369	struct timespec ts;
182	clock_gettime (CLOCK_REALTIME, &ts);	370	clock_gettime (CLOCK_REALTIME, &ts);
…		…
186	gettimeofday (&tv, 0);	374	gettimeofday (&tv, 0);
187	return tv.tv_sec + tv.tv_usec * 1e-6;	375	return tv.tv_sec + tv.tv_usec * 1e-6;
188	#endif	376	#endif
189	}	377	}
190		378
191	inline ev_tstamp	379	ev_tstamp inline_size
192	get_clock (void)	380	get_clock (void)
193	{	381	{
194	#if EV_USE_MONOTONIC	382	#if EV_USE_MONOTONIC
195	if (expect_true (have_monotonic))	383	if (expect_true (have_monotonic))
196	{	384	{
…		…
201	#endif	389	#endif
202		390
203	return ev_time ();	391	return ev_time ();
204	}	392	}
205		393
		394	#if EV_MULTIPLICITY
206	ev_tstamp	395	ev_tstamp
207	ev_now (EV_P)	396	ev_now (EV_P)
208	{	397	{
209	return rt_now;	398	return ev_rt_now;
210	}	399	}
		400	#endif
211		401
212	#define array_roundsize(base,n) ((n) | 4 & ~3)	402	int inline_size
		403	array_nextsize (int elem, int cur, int cnt)
		404	{
		405	int ncur = cur + 1;
213		406
		407	do
		408	ncur <<= 1;
		409	while (cnt > ncur);
		410
		411	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		412	if (elem * ncur > 4096)
		413	{
		414	ncur *= elem;
		415	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		416	ncur = ncur - sizeof (void *) * 4;
		417	ncur /= elem;
		418	}
		419
		420	return ncur;
		421	}
		422
		423	inline_speed void *
		424	array_realloc (int elem, void *base, int *cur, int cnt)
		425	{
		426	*cur = array_nextsize (elem, *cur, cnt);
		427	return ev_realloc (base, elem * *cur);
		428	}
		429
214	#define array_needsize(base,cur,cnt,init) \	430	#define array_needsize(type,base,cur,cnt,init) \
215	if (expect_false ((cnt) > cur)) \	431	if (expect_false ((cnt) > (cur))) \
216	{ \	432	{ \
217	int newcnt = cur; \	433	int ocur_ = (cur); \
218	do \	434	(base) = (type *)array_realloc \
219	{ \	435	(sizeof (type), (base), &(cur), (cnt)); \
220	newcnt = array_roundsize (base, newcnt << 1); \	436	init ((base) + (ocur_), (cur) - ocur_); \
221	} \	437	}
222	while ((cnt) > newcnt); \	438
		439	#if 0
		440	#define array_slim(type,stem) \
		441	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
223	\	442	{ \
224	base = realloc (base, sizeof (*base) * (newcnt)); \	443	stem ## max = array_roundsize (stem ## cnt >> 1); \
225	init (base + cur, newcnt - cur); \	444	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
226	cur = newcnt; \	445	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
227	}	446	}
		447	#endif
		448
		449	#define array_free(stem, idx) \
		450	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
228		451
229	/*****************************************************************************/	452	/*****************************************************************************/
230		453
231	static void	454	void noinline
		455	ev_feed_event (EV_P_ void *w, int revents)
		456	{
		457	W w_ = (W)w;
		458
		459	if (expect_false (w_->pending))
		460	{
		461	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		462	return;
		463	}
		464
		465	w_->pending = ++pendingcnt [ABSPRI (w_)];
		466	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		467	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		468	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		469	}
		470
		471	void inline_size
		472	queue_events (EV_P_ W *events, int eventcnt, int type)
		473	{
		474	int i;
		475
		476	for (i = 0; i < eventcnt; ++i)
		477	ev_feed_event (EV_A_ events [i], type);
		478	}
		479
		480	/*****************************************************************************/
		481
		482	void inline_size
232	anfds_init (ANFD *base, int count)	483	anfds_init (ANFD *base, int count)
233	{	484	{
234	while (count--)	485	while (count--)
235	{	486	{
236	base->head = 0;	487	base->head = 0;
…		…
239		490
240	++base;	491	++base;
241	}	492	}
242	}	493	}
243		494
244	static void	495	void inline_speed
245	event (EV_P_ W w, int events)
246	{
247	if (w->pending)
248	{
249	pendings [ABSPRI (w)][w->pending - 1].events |= events;
250	return;
251	}
252
253	w->pending = ++pendingcnt [ABSPRI (w)];
254	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
255	pendings [ABSPRI (w)][w->pending - 1].w = w;
256	pendings [ABSPRI (w)][w->pending - 1].events = events;
257	}
258
259	static void
260	queue_events (EV_P_ W *events, int eventcnt, int type)
261	{
262	int i;
263
264	for (i = 0; i < eventcnt; ++i)
265	event (EV_A_ events [i], type);
266	}
267
268	static void
269	fd_event (EV_P_ int fd, int events)	496	fd_event (EV_P_ int fd, int revents)
270	{	497	{
271	ANFD *anfd = anfds + fd;	498	ANFD *anfd = anfds + fd;
272	struct ev_io *w;	499	ev_io *w;
273		500
274	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	501	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
275	{	502	{
276	int ev = w->events & events;	503	int ev = w->events & revents;
277		504
278	if (ev)	505	if (ev)
279	event (EV_A_ (W)w, ev);	506	ev_feed_event (EV_A_ (W)w, ev);
280	}	507	}
281	}	508	}
282		509
283	/*****************************************************************************/	510	void
		511	ev_feed_fd_event (EV_P_ int fd, int revents)
		512	{
		513	if (fd >= 0 && fd < anfdmax)
		514	fd_event (EV_A_ fd, revents);
		515	}
284		516
285	static void	517	void inline_size
286	fd_reify (EV_P)	518	fd_reify (EV_P)
287	{	519	{
288	int i;	520	int i;
289		521
290	for (i = 0; i < fdchangecnt; ++i)	522	for (i = 0; i < fdchangecnt; ++i)
291	{	523	{
292	int fd = fdchanges [i];	524	int fd = fdchanges [i];
293	ANFD *anfd = anfds + fd;	525	ANFD *anfd = anfds + fd;
294	struct ev_io *w;	526	ev_io *w;
295		527
296	int events = 0;	528	int events = 0;
297		529
298	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	530	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
299	events |= w->events;	531	events |= w->events;
300		532
		533	#if EV_SELECT_IS_WINSOCKET
		534	if (events)
		535	{
		536	unsigned long argp;
		537	anfd->handle = _get_osfhandle (fd);
		538	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		539	}
		540	#endif
		541
301	anfd->reify = 0;	542	anfd->reify = 0;
302		543
303	if (anfd->events != events)
304	{
305	method_modify (EV_A_ fd, anfd->events, events);	544	backend_modify (EV_A_ fd, anfd->events, events);
306	anfd->events = events;	545	anfd->events = events;
307	}
308	}	546	}
309		547
310	fdchangecnt = 0;	548	fdchangecnt = 0;
311	}	549	}
312		550
313	static void	551	void inline_size
314	fd_change (EV_P_ int fd)	552	fd_change (EV_P_ int fd)
315	{	553	{
316	if (anfds [fd].reify || fdchangecnt < 0)	554	if (expect_false (anfds [fd].reify))
317	return;	555	return;
318		556
319	anfds [fd].reify = 1;	557	anfds [fd].reify = 1;
320		558
321	++fdchangecnt;	559	++fdchangecnt;
322	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	560	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
323	fdchanges [fdchangecnt - 1] = fd;	561	fdchanges [fdchangecnt - 1] = fd;
324	}	562	}
325		563
326	static void	564	void inline_speed
327	fd_kill (EV_P_ int fd)	565	fd_kill (EV_P_ int fd)
328	{	566	{
329	struct ev_io *w;	567	ev_io *w;
330		568
331	while ((w = (struct ev_io *)anfds [fd].head))	569	while ((w = (ev_io *)anfds [fd].head))
332	{	570	{
333	ev_io_stop (EV_A_ w);	571	ev_io_stop (EV_A_ w);
334	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	572	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
335	}	573	}
		574	}
		575
		576	int inline_size
		577	fd_valid (int fd)
		578	{
		579	#ifdef _WIN32
		580	return _get_osfhandle (fd) != -1;
		581	#else
		582	return fcntl (fd, F_GETFD) != -1;
		583	#endif
336	}	584	}
337		585
338	/* called on EBADF to verify fds */	586	/* called on EBADF to verify fds */
339	static void	587	static void noinline
340	fd_ebadf (EV_P)	588	fd_ebadf (EV_P)
341	{	589	{
342	int fd;	590	int fd;
343		591
344	for (fd = 0; fd < anfdmax; ++fd)	592	for (fd = 0; fd < anfdmax; ++fd)
345	if (anfds [fd].events)	593	if (anfds [fd].events)
346	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	594	if (!fd_valid (fd) == -1 && errno == EBADF)
347	fd_kill (EV_A_ fd);	595	fd_kill (EV_A_ fd);
348	}	596	}
349		597
350	/* called on ENOMEM in select/poll to kill some fds and retry */	598	/* called on ENOMEM in select/poll to kill some fds and retry */
351	static void	599	static void noinline
352	fd_enomem (EV_P)	600	fd_enomem (EV_P)
353	{	601	{
354	int fd = anfdmax;	602	int fd;
355		603
356	while (fd--)	604	for (fd = anfdmax; fd--; )
357	if (anfds [fd].events)	605	if (anfds [fd].events)
358	{	606	{
359	close (fd);
360	fd_kill (EV_A_ fd);	607	fd_kill (EV_A_ fd);
361	return;	608	return;
362	}	609	}
363	}	610	}
364		611
365	/* susually called after fork if method needs to re-arm all fds from scratch */	612	/* usually called after fork if backend needs to re-arm all fds from scratch */
366	static void	613	static void noinline
367	fd_rearm_all (EV_P)	614	fd_rearm_all (EV_P)
368	{	615	{
369	int fd;	616	int fd;
370		617
371	/* this should be highly optimised to not do anything but set a flag */
372	for (fd = 0; fd < anfdmax; ++fd)	618	for (fd = 0; fd < anfdmax; ++fd)
373	if (anfds [fd].events)	619	if (anfds [fd].events)
374	{	620	{
375	anfds [fd].events = 0;	621	anfds [fd].events = 0;
376	fd_change (EV_A_ fd);	622	fd_change (EV_A_ fd);
377	}	623	}
378	}	624	}
379		625
380	/*****************************************************************************/	626	/*****************************************************************************/
381		627
382	static void	628	void inline_speed
383	upheap (WT *heap, int k)	629	upheap (WT *heap, int k)
384	{	630	{
385	WT w = heap [k];	631	WT w = heap [k];
386		632
387	while (k && heap [k >> 1]->at > w->at)	633	while (k && heap [k >> 1]->at > w->at)
388	{	634	{
389	heap [k] = heap [k >> 1];	635	heap [k] = heap [k >> 1];
390	heap [k]->active = k + 1;	636	((W)heap [k])->active = k + 1;
391	k >>= 1;	637	k >>= 1;
392	}	638	}
393		639
394	heap [k] = w;	640	heap [k] = w;
395	heap [k]->active = k + 1;	641	((W)heap [k])->active = k + 1;
396		642
397	}	643	}
398		644
399	static void	645	void inline_speed
400	downheap (WT *heap, int N, int k)	646	downheap (WT *heap, int N, int k)
401	{	647	{
402	WT w = heap [k];	648	WT w = heap [k];
403		649
404	while (k < (N >> 1))	650	while (k < (N >> 1))
…		…
410		656
411	if (w->at <= heap [j]->at)	657	if (w->at <= heap [j]->at)
412	break;	658	break;
413		659
414	heap [k] = heap [j];	660	heap [k] = heap [j];
415	heap [k]->active = k + 1;	661	((W)heap [k])->active = k + 1;
416	k = j;	662	k = j;
417	}	663	}
418		664
419	heap [k] = w;	665	heap [k] = w;
420	heap [k]->active = k + 1;	666	((W)heap [k])->active = k + 1;
		667	}
		668
		669	void inline_size
		670	adjustheap (WT *heap, int N, int k)
		671	{
		672	upheap (heap, k);
		673	downheap (heap, N, k);
421	}	674	}
422		675
423	/*****************************************************************************/	676	/*****************************************************************************/
424		677
425	typedef struct	678	typedef struct
426	{	679	{
427	struct ev_watcher_list *head;	680	WL head;
428	sig_atomic_t volatile gotsig;	681	sig_atomic_t volatile gotsig;
429	} ANSIG;	682	} ANSIG;
430		683
431	static ANSIG *signals;	684	static ANSIG *signals;
432	static int signalmax;	685	static int signalmax;
433		686
434	static int sigpipe [2];	687	static int sigpipe [2];
435	static sig_atomic_t volatile gotsig;	688	static sig_atomic_t volatile gotsig;
436	static struct ev_io sigev;	689	static ev_io sigev;
437		690
438	static void	691	void inline_size
439	signals_init (ANSIG *base, int count)	692	signals_init (ANSIG *base, int count)
440	{	693	{
441	while (count--)	694	while (count--)
442	{	695	{
443	base->head = 0;	696	base->head = 0;
…		…
448	}	701	}
449		702
450	static void	703	static void
451	sighandler (int signum)	704	sighandler (int signum)
452	{	705	{
		706	#if _WIN32
		707	signal (signum, sighandler);
		708	#endif
		709
453	signals [signum - 1].gotsig = 1;	710	signals [signum - 1].gotsig = 1;
454		711
455	if (!gotsig)	712	if (!gotsig)
456	{	713	{
457	int old_errno = errno;	714	int old_errno = errno;
…		…
459	write (sigpipe [1], &signum, 1);	716	write (sigpipe [1], &signum, 1);
460	errno = old_errno;	717	errno = old_errno;
461	}	718	}
462	}	719	}
463		720
		721	void noinline
		722	ev_feed_signal_event (EV_P_ int signum)
		723	{
		724	WL w;
		725
		726	#if EV_MULTIPLICITY
		727	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		728	#endif
		729
		730	--signum;
		731
		732	if (signum < 0 || signum >= signalmax)
		733	return;
		734
		735	signals [signum].gotsig = 0;
		736
		737	for (w = signals [signum].head; w; w = w->next)
		738	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		739	}
		740
464	static void	741	static void
465	sigcb (EV_P_ struct ev_io *iow, int revents)	742	sigcb (EV_P_ ev_io *iow, int revents)
466	{	743	{
467	struct ev_watcher_list *w;
468	int signum;	744	int signum;
469		745
470	read (sigpipe [0], &revents, 1);	746	read (sigpipe [0], &revents, 1);
471	gotsig = 0;	747	gotsig = 0;
472		748
473	for (signum = signalmax; signum--; )	749	for (signum = signalmax; signum--; )
474	if (signals [signum].gotsig)	750	if (signals [signum].gotsig)
475	{	751	ev_feed_signal_event (EV_A_ signum + 1);
476	signals [signum].gotsig = 0;
477
478	for (w = signals [signum].head; w; w = w->next)
479	event (EV_A_ (W)w, EV_SIGNAL);
480	}
481	}	752	}
482		753
483	static void	754	void inline_size
		755	fd_intern (int fd)
		756	{
		757	#ifdef _WIN32
		758	int arg = 1;
		759	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		760	#else
		761	fcntl (fd, F_SETFD, FD_CLOEXEC);
		762	fcntl (fd, F_SETFL, O_NONBLOCK);
		763	#endif
		764	}
		765
		766	static void noinline
484	siginit (EV_P)	767	siginit (EV_P)
485	{	768	{
486	#ifndef WIN32	769	fd_intern (sigpipe [0]);
487	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	770	fd_intern (sigpipe [1]);
488	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
489
490	/* rather than sort out wether we really need nb, set it */
491	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
492	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
493	#endif
494		771
495	ev_io_set (&sigev, sigpipe [0], EV_READ);	772	ev_io_set (&sigev, sigpipe [0], EV_READ);
496	ev_io_start (EV_A_ &sigev);	773	ev_io_start (EV_A_ &sigev);
497	ev_unref (EV_A); /* child watcher should not keep loop alive */	774	ev_unref (EV_A); /* child watcher should not keep loop alive */
498	}	775	}
499		776
500	/*****************************************************************************/	777	/*****************************************************************************/
501		778
		779	static ev_child *childs [EV_PID_HASHSIZE];
		780
502	#ifndef WIN32	781	#ifndef _WIN32
503		782
504	static struct ev_child *childs [PID_HASHSIZE];
505	static struct ev_signal childev;	783	static ev_signal childev;
		784
		785	void inline_speed
		786	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		787	{
		788	ev_child *w;
		789
		790	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		791	if (w->pid == pid || !w->pid)
		792	{
		793	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		794	w->rpid = pid;
		795	w->rstatus = status;
		796	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		797	}
		798	}
506		799
507	#ifndef WCONTINUED	800	#ifndef WCONTINUED
508	# define WCONTINUED 0	801	# define WCONTINUED 0
509	#endif	802	#endif
510		803
511	static void	804	static void
512	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
513	{
514	struct ev_child *w;
515
516	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
517	if (w->pid == pid || !w->pid)
518	{
519	w->priority = sw->priority; /* need to do it *now* */
520	w->rpid = pid;
521	w->rstatus = status;
522	event (EV_A_ (W)w, EV_CHILD);
523	}
524	}
525
526	static void
527	childcb (EV_P_ struct ev_signal *sw, int revents)	805	childcb (EV_P_ ev_signal *sw, int revents)
528	{	806	{
529	int pid, status;	807	int pid, status;
530		808
		809	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
531	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	810	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
532	{	811	if (!WCONTINUED
		812	|| errno != EINVAL
		813	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		814	return;
		815
533	/* make sure we are called again until all childs have been reaped */	816	/* make sure we are called again until all childs have been reaped */
		817	/* we need to do it this way so that the callback gets called before we continue */
534	event (EV_A_ (W)sw, EV_SIGNAL);	818	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
535		819
536	child_reap (EV_A_ sw, pid, pid, status);	820	child_reap (EV_A_ sw, pid, pid, status);
		821	if (EV_PID_HASHSIZE > 1)
537	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	822	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
538	}
539	}	823	}
540		824
541	#endif	825	#endif
542		826
543	/*****************************************************************************/	827	/*****************************************************************************/
544		828
		829	#if EV_USE_PORT
		830	# include "ev_port.c"
		831	#endif
545	#if EV_USE_KQUEUE	832	#if EV_USE_KQUEUE
546	# include "ev_kqueue.c"	833	# include "ev_kqueue.c"
547	#endif	834	#endif
548	#if EV_USE_EPOLL	835	#if EV_USE_EPOLL
549	# include "ev_epoll.c"	836	# include "ev_epoll.c"
…		…
566	{	853	{
567	return EV_VERSION_MINOR;	854	return EV_VERSION_MINOR;
568	}	855	}
569		856
570	/* return true if we are running with elevated privileges and should ignore env variables */	857	/* return true if we are running with elevated privileges and should ignore env variables */
571	static int	858	int inline_size
572	enable_secure (void)	859	enable_secure (void)
573	{	860	{
574	#ifdef WIN32	861	#ifdef _WIN32
575	return 0;	862	return 0;
576	#else	863	#else
577	return getuid () != geteuid ()	864	return getuid () != geteuid ()
578	|| getgid () != getegid ();	865	|| getgid () != getegid ();
579	#endif	866	#endif
580	}	867	}
581		868
582	int	869	unsigned int
583	ev_method (EV_P)	870	ev_supported_backends (void)
584	{	871	{
585	return method;	872	unsigned int flags = 0;
586	}
587		873
588	static void	874	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
589	loop_init (EV_P_ int methods)	875	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		876	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		877	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		878	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		879
		880	return flags;
		881	}
		882
		883	unsigned int
		884	ev_recommended_backends (void)
590	{	885	{
591	if (!method)	886	unsigned int flags = ev_supported_backends ();
		887
		888	#ifndef __NetBSD__
		889	/* kqueue is borked on everything but netbsd apparently */
		890	/* it usually doesn't work correctly on anything but sockets and pipes */
		891	flags &= ~EVBACKEND_KQUEUE;
		892	#endif
		893	#ifdef __APPLE__
		894	// flags &= ~EVBACKEND_KQUEUE; for documentation
		895	flags &= ~EVBACKEND_POLL;
		896	#endif
		897
		898	return flags;
		899	}
		900
		901	unsigned int
		902	ev_embeddable_backends (void)
		903	{
		904	return EVBACKEND_EPOLL
		905	| EVBACKEND_KQUEUE
		906	| EVBACKEND_PORT;
		907	}
		908
		909	unsigned int
		910	ev_backend (EV_P)
		911	{
		912	return backend;
		913	}
		914
		915	unsigned int
		916	ev_loop_count (EV_P)
		917	{
		918	return loop_count;
		919	}
		920
		921	static void noinline
		922	loop_init (EV_P_ unsigned int flags)
		923	{
		924	if (!backend)
592	{	925	{
593	#if EV_USE_MONOTONIC	926	#if EV_USE_MONOTONIC
594	{	927	{
595	struct timespec ts;	928	struct timespec ts;
596	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	929	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
597	have_monotonic = 1;	930	have_monotonic = 1;
598	}	931	}
599	#endif	932	#endif
600		933
601	rt_now = ev_time ();	934	ev_rt_now = ev_time ();
602	mn_now = get_clock ();	935	mn_now = get_clock ();
603	now_floor = mn_now;	936	now_floor = mn_now;
604	rtmn_diff = rt_now - mn_now;	937	rtmn_diff = ev_rt_now - mn_now;
605		938
606	if (methods == EVMETHOD_AUTO)	939	/* pid check not overridable via env */
607	if (!enable_secure () && getenv ("LIBEV_METHODS"))	940	#ifndef _WIN32
		941	if (flags & EVFLAG_FORKCHECK)
		942	curpid = getpid ();
		943	#endif
		944
		945	if (!(flags & EVFLAG_NOENV)
		946	&& !enable_secure ()
		947	&& getenv ("LIBEV_FLAGS"))
608	methods = atoi (getenv ("LIBEV_METHODS"));	948	flags = atoi (getenv ("LIBEV_FLAGS"));
609	else
610	methods = EVMETHOD_ANY;
611		949
612	method = 0;	950	if (!(flags & 0x0000ffffUL))
		951	flags |= ev_recommended_backends ();
		952
		953	backend = 0;
		954	backend_fd = -1;
		955	#if EV_USE_INOTIFY
		956	fs_fd = -2;
		957	#endif
		958
		959	#if EV_USE_PORT
		960	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		961	#endif
613	#if EV_USE_KQUEUE	962	#if EV_USE_KQUEUE
614	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	963	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
615	#endif	964	#endif
616	#if EV_USE_EPOLL	965	#if EV_USE_EPOLL
617	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	966	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
618	#endif	967	#endif
619	#if EV_USE_POLL	968	#if EV_USE_POLL
620	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	969	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
621	#endif	970	#endif
622	#if EV_USE_SELECT	971	#if EV_USE_SELECT
623	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	972	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
624	#endif	973	#endif
625	}
626	}
627		974
628	void	975	ev_init (&sigev, sigcb);
		976	ev_set_priority (&sigev, EV_MAXPRI);
		977	}
		978	}
		979
		980	static void noinline
629	loop_destroy (EV_P)	981	loop_destroy (EV_P)
630	{	982	{
		983	int i;
		984
		985	#if EV_USE_INOTIFY
		986	if (fs_fd >= 0)
		987	close (fs_fd);
		988	#endif
		989
		990	if (backend_fd >= 0)
		991	close (backend_fd);
		992
		993	#if EV_USE_PORT
		994	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		995	#endif
631	#if EV_USE_KQUEUE	996	#if EV_USE_KQUEUE
632	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	997	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
633	#endif	998	#endif
634	#if EV_USE_EPOLL	999	#if EV_USE_EPOLL
635	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1000	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
636	#endif	1001	#endif
637	#if EV_USE_POLL	1002	#if EV_USE_POLL
638	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1003	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
639	#endif	1004	#endif
640	#if EV_USE_SELECT	1005	#if EV_USE_SELECT
641	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1006	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
642	#endif	1007	#endif
643		1008
644	method = 0;	1009	for (i = NUMPRI; i--; )
645	/*TODO*/	1010	{
646	}	1011	array_free (pending, [i]);
		1012	#if EV_IDLE_ENABLE
		1013	array_free (idle, [i]);
		1014	#endif
		1015	}
647		1016
648	void	1017	/* have to use the microsoft-never-gets-it-right macro */
		1018	array_free (fdchange, EMPTY);
		1019	array_free (timer, EMPTY);
		1020	#if EV_PERIODIC_ENABLE
		1021	array_free (periodic, EMPTY);
		1022	#endif
		1023	array_free (prepare, EMPTY);
		1024	array_free (check, EMPTY);
		1025
		1026	backend = 0;
		1027	}
		1028
		1029	void inline_size infy_fork (EV_P);
		1030
		1031	void inline_size
649	loop_fork (EV_P)	1032	loop_fork (EV_P)
650	{	1033	{
651	/*TODO*/	1034	#if EV_USE_PORT
		1035	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1036	#endif
		1037	#if EV_USE_KQUEUE
		1038	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1039	#endif
652	#if EV_USE_EPOLL	1040	#if EV_USE_EPOLL
653	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1041	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
654	#endif	1042	#endif
655	#if EV_USE_KQUEUE	1043	#if EV_USE_INOTIFY
656	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1044	infy_fork (EV_A);
657	#endif	1045	#endif
		1046
		1047	if (ev_is_active (&sigev))
		1048	{
		1049	/* default loop */
		1050
		1051	ev_ref (EV_A);
		1052	ev_io_stop (EV_A_ &sigev);
		1053	close (sigpipe [0]);
		1054	close (sigpipe [1]);
		1055
		1056	while (pipe (sigpipe))
		1057	syserr ("(libev) error creating pipe");
		1058
		1059	siginit (EV_A);
		1060	}
		1061
		1062	postfork = 0;
658	}	1063	}
659		1064
660	#if EV_MULTIPLICITY	1065	#if EV_MULTIPLICITY
661	struct ev_loop *	1066	struct ev_loop *
662	ev_loop_new (int methods)	1067	ev_loop_new (unsigned int flags)
663	{	1068	{
664	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));	1069	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
665		1070
		1071	memset (loop, 0, sizeof (struct ev_loop));
		1072
666	loop_init (EV_A_ methods);	1073	loop_init (EV_A_ flags);
667		1074
668	if (ev_method (EV_A))	1075	if (ev_backend (EV_A))
669	return loop;	1076	return loop;
670		1077
671	return 0;	1078	return 0;
672	}	1079	}
673		1080
674	void	1081	void
675	ev_loop_destroy (EV_P)	1082	ev_loop_destroy (EV_P)
676	{	1083	{
677	loop_destroy (EV_A);	1084	loop_destroy (EV_A);
678	free (loop);	1085	ev_free (loop);
679	}	1086	}
680		1087
681	void	1088	void
682	ev_loop_fork (EV_P)	1089	ev_loop_fork (EV_P)
683	{	1090	{
684	loop_fork (EV_A);	1091	postfork = 1;
685	}	1092	}
686		1093
687	#endif	1094	#endif
688		1095
689	#if EV_MULTIPLICITY	1096	#if EV_MULTIPLICITY
690	struct ev_loop default_loop_struct;
691	static struct ev_loop *default_loop;
692
693	struct ev_loop *	1097	struct ev_loop *
		1098	ev_default_loop_init (unsigned int flags)
694	#else	1099	#else
695	static int default_loop;
696
697	int	1100	int
		1101	ev_default_loop (unsigned int flags)
698	#endif	1102	#endif
699	ev_default_loop (int methods)
700	{	1103	{
701	if (sigpipe [0] == sigpipe [1])	1104	if (sigpipe [0] == sigpipe [1])
702	if (pipe (sigpipe))	1105	if (pipe (sigpipe))
703	return 0;	1106	return 0;
704		1107
705	if (!default_loop)	1108	if (!ev_default_loop_ptr)
706	{	1109	{
707	#if EV_MULTIPLICITY	1110	#if EV_MULTIPLICITY
708	struct ev_loop *loop = default_loop = &default_loop_struct;	1111	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
709	#else	1112	#else
710	default_loop = 1;	1113	ev_default_loop_ptr = 1;
711	#endif	1114	#endif
712		1115
713	loop_init (EV_A_ methods);	1116	loop_init (EV_A_ flags);
714		1117
715	if (ev_method (EV_A))	1118	if (ev_backend (EV_A))
716	{	1119	{
717	ev_watcher_init (&sigev, sigcb);
718	ev_set_priority (&sigev, EV_MAXPRI);
719	siginit (EV_A);	1120	siginit (EV_A);
720		1121
721	#ifndef WIN32	1122	#ifndef _WIN32
722	ev_signal_init (&childev, childcb, SIGCHLD);	1123	ev_signal_init (&childev, childcb, SIGCHLD);
723	ev_set_priority (&childev, EV_MAXPRI);	1124	ev_set_priority (&childev, EV_MAXPRI);
724	ev_signal_start (EV_A_ &childev);	1125	ev_signal_start (EV_A_ &childev);
725	ev_unref (EV_A); /* child watcher should not keep loop alive */	1126	ev_unref (EV_A); /* child watcher should not keep loop alive */
726	#endif	1127	#endif
727	}	1128	}
728	else	1129	else
729	default_loop = 0;	1130	ev_default_loop_ptr = 0;
730	}	1131	}
731		1132
732	return default_loop;	1133	return ev_default_loop_ptr;
733	}	1134	}
734		1135
735	void	1136	void
736	ev_default_destroy (void)	1137	ev_default_destroy (void)
737	{	1138	{
738	#if EV_MULTIPLICITY	1139	#if EV_MULTIPLICITY
739	struct ev_loop *loop = default_loop;	1140	struct ev_loop *loop = ev_default_loop_ptr;
740	#endif	1141	#endif
741		1142
		1143	#ifndef _WIN32
742	ev_ref (EV_A); /* child watcher */	1144	ev_ref (EV_A); /* child watcher */
743	ev_signal_stop (EV_A_ &childev);	1145	ev_signal_stop (EV_A_ &childev);
		1146	#endif
744		1147
745	ev_ref (EV_A); /* signal watcher */	1148	ev_ref (EV_A); /* signal watcher */
746	ev_io_stop (EV_A_ &sigev);	1149	ev_io_stop (EV_A_ &sigev);
747		1150
748	close (sigpipe [0]); sigpipe [0] = 0;	1151	close (sigpipe [0]); sigpipe [0] = 0;
…		…
753		1156
754	void	1157	void
755	ev_default_fork (void)	1158	ev_default_fork (void)
756	{	1159	{
757	#if EV_MULTIPLICITY	1160	#if EV_MULTIPLICITY
758	struct ev_loop *loop = default_loop;	1161	struct ev_loop *loop = ev_default_loop_ptr;
759	#endif	1162	#endif
760		1163
761	loop_fork (EV_A);	1164	if (backend)
762		1165	postfork = 1;
763	ev_io_stop (EV_A_ &sigev);
764	close (sigpipe [0]);
765	close (sigpipe [1]);
766	pipe (sigpipe);
767
768	ev_ref (EV_A); /* signal watcher */
769	siginit (EV_A);
770	}	1166	}
771		1167
772	/*****************************************************************************/	1168	/*****************************************************************************/
773		1169
774	static void	1170	void
		1171	ev_invoke (EV_P_ void *w, int revents)
		1172	{
		1173	EV_CB_INVOKE ((W)w, revents);
		1174	}
		1175
		1176	void inline_speed
775	call_pending (EV_P)	1177	call_pending (EV_P)
776	{	1178	{
777	int pri;	1179	int pri;
778		1180
779	for (pri = NUMPRI; pri--; )	1181	for (pri = NUMPRI; pri--; )
780	while (pendingcnt [pri])	1182	while (pendingcnt [pri])
781	{	1183	{
782	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1184	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
783		1185
784	if (p->w)	1186	if (expect_true (p->w))
785	{	1187	{
		1188	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1189
786	p->w->pending = 0;	1190	p->w->pending = 0;
787	p->w->cb (EV_A_ p->w, p->events);	1191	EV_CB_INVOKE (p->w, p->events);
788	}	1192	}
789	}	1193	}
790	}	1194	}
791		1195
792	static void	1196	void inline_size
793	timers_reify (EV_P)	1197	timers_reify (EV_P)
794	{	1198	{
795	while (timercnt && timers [0]->at <= mn_now)	1199	while (timercnt && ((WT)timers [0])->at <= mn_now)
796	{	1200	{
797	struct ev_timer *w = timers [0];	1201	ev_timer *w = timers [0];
798		1202
799	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1203	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
800		1204
801	/* first reschedule or stop timer */	1205	/* first reschedule or stop timer */
802	if (w->repeat)	1206	if (w->repeat)
803	{	1207	{
804	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1208	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1209
805	w->at = mn_now + w->repeat;	1210	((WT)w)->at += w->repeat;
		1211	if (((WT)w)->at < mn_now)
		1212	((WT)w)->at = mn_now;
		1213
806	downheap ((WT *)timers, timercnt, 0);	1214	downheap ((WT *)timers, timercnt, 0);
807	}	1215	}
808	else	1216	else
809	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1217	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
810		1218
811	event (EV_A_ (W)w, EV_TIMEOUT);	1219	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
812	}	1220	}
813	}	1221	}
814		1222
815	static void	1223	#if EV_PERIODIC_ENABLE
		1224	void inline_size
816	periodics_reify (EV_P)	1225	periodics_reify (EV_P)
817	{	1226	{
818	while (periodiccnt && periodics [0]->at <= rt_now)	1227	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
819	{	1228	{
820	struct ev_periodic *w = periodics [0];	1229	ev_periodic *w = periodics [0];
821		1230
822	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1231	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
823		1232
824	/* first reschedule or stop timer */	1233	/* first reschedule or stop timer */
825	if (w->interval)	1234	if (w->reschedule_cb)
826	{	1235	{
		1236	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1237	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1238	downheap ((WT *)periodics, periodiccnt, 0);
		1239	}
		1240	else if (w->interval)
		1241	{
827	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1242	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
828	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1243	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
829	downheap ((WT *)periodics, periodiccnt, 0);	1244	downheap ((WT *)periodics, periodiccnt, 0);
830	}	1245	}
831	else	1246	else
832	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1247	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
833		1248
834	event (EV_A_ (W)w, EV_PERIODIC);	1249	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
835	}	1250	}
836	}	1251	}
837		1252
838	static void	1253	static void noinline
839	periodics_reschedule (EV_P)	1254	periodics_reschedule (EV_P)
840	{	1255	{
841	int i;	1256	int i;
842		1257
843	/* adjust periodics after time jump */	1258	/* adjust periodics after time jump */
844	for (i = 0; i < periodiccnt; ++i)	1259	for (i = 0; i < periodiccnt; ++i)
845	{	1260	{
846	struct ev_periodic *w = periodics [i];	1261	ev_periodic *w = periodics [i];
847		1262
		1263	if (w->reschedule_cb)
		1264	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
848	if (w->interval)	1265	else if (w->interval)
		1266	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1267	}
		1268
		1269	/* now rebuild the heap */
		1270	for (i = periodiccnt >> 1; i--; )
		1271	downheap ((WT *)periodics, periodiccnt, i);
		1272	}
		1273	#endif
		1274
		1275	#if EV_IDLE_ENABLE
		1276	void inline_size
		1277	idle_reify (EV_P)
		1278	{
		1279	if (expect_false (idleall))
		1280	{
		1281	int pri;
		1282
		1283	for (pri = NUMPRI; pri--; )
849	{	1284	{
850	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1285	if (pendingcnt [pri])
		1286	break;
851		1287
852	if (fabs (diff) >= 1e-4)	1288	if (idlecnt [pri])
853	{	1289	{
854	ev_periodic_stop (EV_A_ w);	1290	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
855	ev_periodic_start (EV_A_ w);	1291	break;
856
857	i = 0; /* restart loop, inefficient, but time jumps should be rare */
858	}	1292	}
859	}	1293	}
860	}	1294	}
861	}	1295	}
		1296	#endif
862		1297
863	inline int	1298	int inline_size
864	time_update_monotonic (EV_P)	1299	time_update_monotonic (EV_P)
865	{	1300	{
866	mn_now = get_clock ();	1301	mn_now = get_clock ();
867		1302
868	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1303	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
869	{	1304	{
870	rt_now = rtmn_diff + mn_now;	1305	ev_rt_now = rtmn_diff + mn_now;
871	return 0;	1306	return 0;
872	}	1307	}
873	else	1308	else
874	{	1309	{
875	now_floor = mn_now;	1310	now_floor = mn_now;
876	rt_now = ev_time ();	1311	ev_rt_now = ev_time ();
877	return 1;	1312	return 1;
878	}	1313	}
879	}	1314	}
880		1315
881	static void	1316	void inline_size
882	time_update (EV_P)	1317	time_update (EV_P)
883	{	1318	{
884	int i;	1319	int i;
885		1320
886	#if EV_USE_MONOTONIC	1321	#if EV_USE_MONOTONIC
…		…
888	{	1323	{
889	if (time_update_monotonic (EV_A))	1324	if (time_update_monotonic (EV_A))
890	{	1325	{
891	ev_tstamp odiff = rtmn_diff;	1326	ev_tstamp odiff = rtmn_diff;
892		1327
893	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1328	/* loop a few times, before making important decisions.
		1329	* on the choice of "4": one iteration isn't enough,
		1330	* in case we get preempted during the calls to
		1331	* ev_time and get_clock. a second call is almost guaranteed
		1332	* to succeed in that case, though. and looping a few more times
		1333	* doesn't hurt either as we only do this on time-jumps or
		1334	* in the unlikely event of having been preempted here.
		1335	*/
		1336	for (i = 4; --i; )
894	{	1337	{
895	rtmn_diff = rt_now - mn_now;	1338	rtmn_diff = ev_rt_now - mn_now;
896		1339
897	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1340	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
898	return; /* all is well */	1341	return; /* all is well */
899		1342
900	rt_now = ev_time ();	1343	ev_rt_now = ev_time ();
901	mn_now = get_clock ();	1344	mn_now = get_clock ();
902	now_floor = mn_now;	1345	now_floor = mn_now;
903	}	1346	}
904		1347
		1348	# if EV_PERIODIC_ENABLE
905	periodics_reschedule (EV_A);	1349	periodics_reschedule (EV_A);
		1350	# endif
906	/* no timer adjustment, as the monotonic clock doesn't jump */	1351	/* no timer adjustment, as the monotonic clock doesn't jump */
907	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1352	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
908	}	1353	}
909	}	1354	}
910	else	1355	else
911	#endif	1356	#endif
912	{	1357	{
913	rt_now = ev_time ();	1358	ev_rt_now = ev_time ();
914		1359
915	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1360	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
916	{	1361	{
		1362	#if EV_PERIODIC_ENABLE
917	periodics_reschedule (EV_A);	1363	periodics_reschedule (EV_A);
		1364	#endif
918		1365
919	/* adjust timers. this is easy, as the offset is the same for all */	1366	/* adjust timers. this is easy, as the offset is the same for all of them */
920	for (i = 0; i < timercnt; ++i)	1367	for (i = 0; i < timercnt; ++i)
921	timers [i]->at += rt_now - mn_now;	1368	((WT)timers [i])->at += ev_rt_now - mn_now;
922	}	1369	}
923		1370
924	mn_now = rt_now;	1371	mn_now = ev_rt_now;
925	}	1372	}
926	}	1373	}
927		1374
928	void	1375	void
929	ev_ref (EV_P)	1376	ev_ref (EV_P)
…		…
940	static int loop_done;	1387	static int loop_done;
941		1388
942	void	1389	void
943	ev_loop (EV_P_ int flags)	1390	ev_loop (EV_P_ int flags)
944	{	1391	{
945	double block;
946	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1392	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1393	? EVUNLOOP_ONE
		1394	: EVUNLOOP_CANCEL;
		1395
		1396	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
947		1397
948	do	1398	do
949	{	1399	{
		1400	#ifndef _WIN32
		1401	if (expect_false (curpid)) /* penalise the forking check even more */
		1402	if (expect_false (getpid () != curpid))
		1403	{
		1404	curpid = getpid ();
		1405	postfork = 1;
		1406	}
		1407	#endif
		1408
		1409	#if EV_FORK_ENABLE
		1410	/* we might have forked, so queue fork handlers */
		1411	if (expect_false (postfork))
		1412	if (forkcnt)
		1413	{
		1414	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1415	call_pending (EV_A);
		1416	}
		1417	#endif
		1418
950	/* queue check watchers (and execute them) */	1419	/* queue check watchers (and execute them) */
951	if (expect_false (preparecnt))	1420	if (expect_false (preparecnt))
952	{	1421	{
953	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1422	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
954	call_pending (EV_A);	1423	call_pending (EV_A);
955	}	1424	}
956		1425
		1426	if (expect_false (!activecnt))
		1427	break;
		1428
		1429	/* we might have forked, so reify kernel state if necessary */
		1430	if (expect_false (postfork))
		1431	loop_fork (EV_A);
		1432
957	/* update fd-related kernel structures */	1433	/* update fd-related kernel structures */
958	fd_reify (EV_A);	1434	fd_reify (EV_A);
959		1435
960	/* calculate blocking time */	1436	/* calculate blocking time */
		1437	{
		1438	ev_tstamp block;
961		1439
962	/* we only need this for !monotonic clockor timers, but as we basically	1440	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
963	always have timers, we just calculate it always */	1441	block = 0.; /* do not block at all */
		1442	else
		1443	{
		1444	/* update time to cancel out callback processing overhead */
964	#if EV_USE_MONOTONIC	1445	#if EV_USE_MONOTONIC
965	if (expect_true (have_monotonic))	1446	if (expect_true (have_monotonic))
966	time_update_monotonic (EV_A);	1447	time_update_monotonic (EV_A);
967	else	1448	else
968	#endif	1449	#endif
969	{	1450	{
970	rt_now = ev_time ();	1451	ev_rt_now = ev_time ();
971	mn_now = rt_now;	1452	mn_now = ev_rt_now;
972	}	1453	}
973		1454
974	if (flags & EVLOOP_NONBLOCK || idlecnt)
975	block = 0.;
976	else
977	{
978	block = MAX_BLOCKTIME;	1455	block = MAX_BLOCKTIME;
979		1456
980	if (timercnt)	1457	if (timercnt)
981	{	1458	{
982	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1459	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
983	if (block > to) block = to;	1460	if (block > to) block = to;
984	}	1461	}
985		1462
		1463	#if EV_PERIODIC_ENABLE
986	if (periodiccnt)	1464	if (periodiccnt)
987	{	1465	{
988	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1466	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
989	if (block > to) block = to;	1467	if (block > to) block = to;
990	}	1468	}
		1469	#endif
991		1470
992	if (block < 0.) block = 0.;	1471	if (expect_false (block < 0.)) block = 0.;
993	}	1472	}
994		1473
		1474	++loop_count;
995	method_poll (EV_A_ block);	1475	backend_poll (EV_A_ block);
		1476	}
996		1477
997	/* update rt_now, do magic */	1478	/* update ev_rt_now, do magic */
998	time_update (EV_A);	1479	time_update (EV_A);
999		1480
1000	/* queue pending timers and reschedule them */	1481	/* queue pending timers and reschedule them */
1001	timers_reify (EV_A); /* relative timers called last */	1482	timers_reify (EV_A); /* relative timers called last */
		1483	#if EV_PERIODIC_ENABLE
1002	periodics_reify (EV_A); /* absolute timers called first */	1484	periodics_reify (EV_A); /* absolute timers called first */
		1485	#endif
1003		1486
		1487	#if EV_IDLE_ENABLE
1004	/* queue idle watchers unless io or timers are pending */	1488	/* queue idle watchers unless other events are pending */
1005	if (!pendingcnt)	1489	idle_reify (EV_A);
1006	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1490	#endif
1007		1491
1008	/* queue check watchers, to be executed first */	1492	/* queue check watchers, to be executed first */
1009	if (checkcnt)	1493	if (expect_false (checkcnt))
1010	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1494	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1011		1495
1012	call_pending (EV_A);	1496	call_pending (EV_A);
		1497
1013	}	1498	}
1014	while (activecnt && !loop_done);	1499	while (expect_true (activecnt && !loop_done));
1015		1500
1016	if (loop_done != 2)	1501	if (loop_done == EVUNLOOP_ONE)
1017	loop_done = 0;	1502	loop_done = EVUNLOOP_CANCEL;
1018	}	1503	}
1019		1504
1020	void	1505	void
1021	ev_unloop (EV_P_ int how)	1506	ev_unloop (EV_P_ int how)
1022	{	1507	{
1023	loop_done = how;	1508	loop_done = how;
1024	}	1509	}
1025		1510
1026	/*****************************************************************************/	1511	/*****************************************************************************/
1027		1512
1028	inline void	1513	void inline_size
1029	wlist_add (WL *head, WL elem)	1514	wlist_add (WL *head, WL elem)
1030	{	1515	{
1031	elem->next = *head;	1516	elem->next = *head;
1032	*head = elem;	1517	*head = elem;
1033	}	1518	}
1034		1519
1035	inline void	1520	void inline_size
1036	wlist_del (WL *head, WL elem)	1521	wlist_del (WL *head, WL elem)
1037	{	1522	{
1038	while (*head)	1523	while (*head)
1039	{	1524	{
1040	if (*head == elem)	1525	if (*head == elem)
…		…
1045		1530
1046	head = &(*head)->next;	1531	head = &(*head)->next;
1047	}	1532	}
1048	}	1533	}
1049		1534
1050	inline void	1535	void inline_speed
1051	ev_clear_pending (EV_P_ W w)	1536	clear_pending (EV_P_ W w)
1052	{	1537	{
1053	if (w->pending)	1538	if (w->pending)
1054	{	1539	{
1055	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1540	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1056	w->pending = 0;	1541	w->pending = 0;
1057	}	1542	}
1058	}	1543	}
1059		1544
1060	inline void	1545	int
		1546	ev_clear_pending (EV_P_ void *w)
		1547	{
		1548	W w_ = (W)w;
		1549	int pending = w_->pending;
		1550
		1551	if (!pending)
		1552	return 0;
		1553
		1554	w_->pending = 0;
		1555	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1556	p->w = 0;
		1557
		1558	return p->events;
		1559	}
		1560
		1561	void inline_size
		1562	pri_adjust (EV_P_ W w)
		1563	{
		1564	int pri = w->priority;
		1565	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1566	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1567	w->priority = pri;
		1568	}
		1569
		1570	void inline_speed
1061	ev_start (EV_P_ W w, int active)	1571	ev_start (EV_P_ W w, int active)
1062	{	1572	{
1063	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1573	pri_adjust (EV_A_ w);
1064	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1065
1066	w->active = active;	1574	w->active = active;
1067	ev_ref (EV_A);	1575	ev_ref (EV_A);
1068	}	1576	}
1069		1577
1070	inline void	1578	void inline_size
1071	ev_stop (EV_P_ W w)	1579	ev_stop (EV_P_ W w)
1072	{	1580	{
1073	ev_unref (EV_A);	1581	ev_unref (EV_A);
1074	w->active = 0;	1582	w->active = 0;
1075	}	1583	}
1076		1584
1077	/*****************************************************************************/	1585	/*****************************************************************************/
1078		1586
1079	void	1587	void
1080	ev_io_start (EV_P_ struct ev_io *w)	1588	ev_io_start (EV_P_ ev_io *w)
1081	{	1589	{
1082	int fd = w->fd;	1590	int fd = w->fd;
1083		1591
1084	if (ev_is_active (w))	1592	if (expect_false (ev_is_active (w)))
1085	return;	1593	return;
1086		1594
1087	assert (("ev_io_start called with negative fd", fd >= 0));	1595	assert (("ev_io_start called with negative fd", fd >= 0));
1088		1596
1089	ev_start (EV_A_ (W)w, 1);	1597	ev_start (EV_A_ (W)w, 1);
1090	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1598	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1091	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1599	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1092		1600
1093	fd_change (EV_A_ fd);	1601	fd_change (EV_A_ fd);
1094	}	1602	}
1095		1603
1096	void	1604	void
1097	ev_io_stop (EV_P_ struct ev_io *w)	1605	ev_io_stop (EV_P_ ev_io *w)
1098	{	1606	{
1099	ev_clear_pending (EV_A_ (W)w);	1607	clear_pending (EV_A_ (W)w);
1100	if (!ev_is_active (w))	1608	if (expect_false (!ev_is_active (w)))
1101	return;	1609	return;
		1610
		1611	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1102		1612
1103	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1613	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1104	ev_stop (EV_A_ (W)w);	1614	ev_stop (EV_A_ (W)w);
1105		1615
1106	fd_change (EV_A_ w->fd);	1616	fd_change (EV_A_ w->fd);
1107	}	1617	}
1108		1618
1109	void	1619	void
1110	ev_timer_start (EV_P_ struct ev_timer *w)	1620	ev_timer_start (EV_P_ ev_timer *w)
1111	{	1621	{
1112	if (ev_is_active (w))	1622	if (expect_false (ev_is_active (w)))
1113	return;	1623	return;
1114		1624
1115	w->at += mn_now;	1625	((WT)w)->at += mn_now;
1116		1626
1117	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1627	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1118		1628
1119	ev_start (EV_A_ (W)w, ++timercnt);	1629	ev_start (EV_A_ (W)w, ++timercnt);
1120	array_needsize (timers, timermax, timercnt, );	1630	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1121	timers [timercnt - 1] = w;	1631	timers [timercnt - 1] = w;
1122	upheap ((WT *)timers, timercnt - 1);	1632	upheap ((WT *)timers, timercnt - 1);
1123	}
1124		1633
		1634	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1635	}
		1636
1125	void	1637	void
1126	ev_timer_stop (EV_P_ struct ev_timer *w)	1638	ev_timer_stop (EV_P_ ev_timer *w)
1127	{	1639	{
1128	ev_clear_pending (EV_A_ (W)w);	1640	clear_pending (EV_A_ (W)w);
1129	if (!ev_is_active (w))	1641	if (expect_false (!ev_is_active (w)))
1130	return;	1642	return;
1131		1643
1132	if (w->active < timercnt--)	1644	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1645
		1646	{
		1647	int active = ((W)w)->active;
		1648
		1649	if (expect_true (--active < --timercnt))
1133	{	1650	{
1134	timers [w->active - 1] = timers [timercnt];	1651	timers [active] = timers [timercnt];
1135	downheap ((WT *)timers, timercnt, w->active - 1);	1652	adjustheap ((WT *)timers, timercnt, active);
1136	}	1653	}
		1654	}
1137		1655
1138	w->at = w->repeat;	1656	((WT)w)->at -= mn_now;
1139		1657
1140	ev_stop (EV_A_ (W)w);	1658	ev_stop (EV_A_ (W)w);
1141	}	1659	}
1142		1660
1143	void	1661	void
1144	ev_timer_again (EV_P_ struct ev_timer *w)	1662	ev_timer_again (EV_P_ ev_timer *w)
1145	{	1663	{
1146	if (ev_is_active (w))	1664	if (ev_is_active (w))
1147	{	1665	{
1148	if (w->repeat)	1666	if (w->repeat)
1149	{	1667	{
1150	w->at = mn_now + w->repeat;	1668	((WT)w)->at = mn_now + w->repeat;
1151	downheap ((WT *)timers, timercnt, w->active - 1);	1669	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1152	}	1670	}
1153	else	1671	else
1154	ev_timer_stop (EV_A_ w);	1672	ev_timer_stop (EV_A_ w);
1155	}	1673	}
1156	else if (w->repeat)	1674	else if (w->repeat)
		1675	{
		1676	w->at = w->repeat;
1157	ev_timer_start (EV_A_ w);	1677	ev_timer_start (EV_A_ w);
		1678	}
1158	}	1679	}
1159		1680
		1681	#if EV_PERIODIC_ENABLE
1160	void	1682	void
1161	ev_periodic_start (EV_P_ struct ev_periodic *w)	1683	ev_periodic_start (EV_P_ ev_periodic *w)
1162	{	1684	{
1163	if (ev_is_active (w))	1685	if (expect_false (ev_is_active (w)))
1164	return;	1686	return;
1165		1687
		1688	if (w->reschedule_cb)
		1689	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1690	else if (w->interval)
		1691	{
1166	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1692	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1167
1168	/* this formula differs from the one in periodic_reify because we do not always round up */	1693	/* this formula differs from the one in periodic_reify because we do not always round up */
1169	if (w->interval)
1170	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1694	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1695	}
1171		1696
1172	ev_start (EV_A_ (W)w, ++periodiccnt);	1697	ev_start (EV_A_ (W)w, ++periodiccnt);
1173	array_needsize (periodics, periodicmax, periodiccnt, );	1698	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1174	periodics [periodiccnt - 1] = w;	1699	periodics [periodiccnt - 1] = w;
1175	upheap ((WT *)periodics, periodiccnt - 1);	1700	upheap ((WT *)periodics, periodiccnt - 1);
1176	}
1177		1701
		1702	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1703	}
		1704
1178	void	1705	void
1179	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1706	ev_periodic_stop (EV_P_ ev_periodic *w)
1180	{	1707	{
1181	ev_clear_pending (EV_A_ (W)w);	1708	clear_pending (EV_A_ (W)w);
1182	if (!ev_is_active (w))	1709	if (expect_false (!ev_is_active (w)))
1183	return;	1710	return;
1184		1711
1185	if (w->active < periodiccnt--)	1712	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1713
		1714	{
		1715	int active = ((W)w)->active;
		1716
		1717	if (expect_true (--active < --periodiccnt))
1186	{	1718	{
1187	periodics [w->active - 1] = periodics [periodiccnt];	1719	periodics [active] = periodics [periodiccnt];
1188	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1720	adjustheap ((WT *)periodics, periodiccnt, active);
1189	}	1721	}
		1722	}
1190		1723
1191	ev_stop (EV_A_ (W)w);	1724	ev_stop (EV_A_ (W)w);
1192	}	1725	}
1193		1726
1194	void	1727	void
1195	ev_idle_start (EV_P_ struct ev_idle *w)	1728	ev_periodic_again (EV_P_ ev_periodic *w)
1196	{	1729	{
1197	if (ev_is_active (w))	1730	/* TODO: use adjustheap and recalculation */
1198	return;
1199
1200	ev_start (EV_A_ (W)w, ++idlecnt);
1201	array_needsize (idles, idlemax, idlecnt, );
1202	idles [idlecnt - 1] = w;
1203	}
1204
1205	void
1206	ev_idle_stop (EV_P_ struct ev_idle *w)
1207	{
1208	ev_clear_pending (EV_A_ (W)w);
1209	if (ev_is_active (w))
1210	return;
1211
1212	idles [w->active - 1] = idles [--idlecnt];
1213	ev_stop (EV_A_ (W)w);	1731	ev_periodic_stop (EV_A_ w);
		1732	ev_periodic_start (EV_A_ w);
1214	}	1733	}
1215		1734	#endif
1216	void
1217	ev_prepare_start (EV_P_ struct ev_prepare *w)
1218	{
1219	if (ev_is_active (w))
1220	return;
1221
1222	ev_start (EV_A_ (W)w, ++preparecnt);
1223	array_needsize (prepares, preparemax, preparecnt, );
1224	prepares [preparecnt - 1] = w;
1225	}
1226
1227	void
1228	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1229	{
1230	ev_clear_pending (EV_A_ (W)w);
1231	if (ev_is_active (w))
1232	return;
1233
1234	prepares [w->active - 1] = prepares [--preparecnt];
1235	ev_stop (EV_A_ (W)w);
1236	}
1237
1238	void
1239	ev_check_start (EV_P_ struct ev_check *w)
1240	{
1241	if (ev_is_active (w))
1242	return;
1243
1244	ev_start (EV_A_ (W)w, ++checkcnt);
1245	array_needsize (checks, checkmax, checkcnt, );
1246	checks [checkcnt - 1] = w;
1247	}
1248
1249	void
1250	ev_check_stop (EV_P_ struct ev_check *w)
1251	{
1252	ev_clear_pending (EV_A_ (W)w);
1253	if (ev_is_active (w))
1254	return;
1255
1256	checks [w->active - 1] = checks [--checkcnt];
1257	ev_stop (EV_A_ (W)w);
1258	}
1259		1735
1260	#ifndef SA_RESTART	1736	#ifndef SA_RESTART
1261	# define SA_RESTART 0	1737	# define SA_RESTART 0
1262	#endif	1738	#endif
1263		1739
1264	void	1740	void
1265	ev_signal_start (EV_P_ struct ev_signal *w)	1741	ev_signal_start (EV_P_ ev_signal *w)
1266	{	1742	{
1267	#if EV_MULTIPLICITY	1743	#if EV_MULTIPLICITY
1268	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1744	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1269	#endif	1745	#endif
1270	if (ev_is_active (w))	1746	if (expect_false (ev_is_active (w)))
1271	return;	1747	return;
1272		1748
1273	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1749	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1274		1750
1275	ev_start (EV_A_ (W)w, 1);	1751	ev_start (EV_A_ (W)w, 1);
1276	array_needsize (signals, signalmax, w->signum, signals_init);	1752	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1277	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1753	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1278		1754
1279	if (!w->next)	1755	if (!((WL)w)->next)
1280	{	1756	{
		1757	#if _WIN32
		1758	signal (w->signum, sighandler);
		1759	#else
1281	struct sigaction sa;	1760	struct sigaction sa;
1282	sa.sa_handler = sighandler;	1761	sa.sa_handler = sighandler;
1283	sigfillset (&sa.sa_mask);	1762	sigfillset (&sa.sa_mask);
1284	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1763	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1285	sigaction (w->signum, &sa, 0);	1764	sigaction (w->signum, &sa, 0);
		1765	#endif
1286	}	1766	}
1287	}	1767	}
1288		1768
1289	void	1769	void
1290	ev_signal_stop (EV_P_ struct ev_signal *w)	1770	ev_signal_stop (EV_P_ ev_signal *w)
1291	{	1771	{
1292	ev_clear_pending (EV_A_ (W)w);	1772	clear_pending (EV_A_ (W)w);
1293	if (!ev_is_active (w))	1773	if (expect_false (!ev_is_active (w)))
1294	return;	1774	return;
1295		1775
1296	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1776	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1297	ev_stop (EV_A_ (W)w);	1777	ev_stop (EV_A_ (W)w);
1298		1778
1299	if (!signals [w->signum - 1].head)	1779	if (!signals [w->signum - 1].head)
1300	signal (w->signum, SIG_DFL);	1780	signal (w->signum, SIG_DFL);
1301	}	1781	}
1302		1782
1303	void	1783	void
1304	ev_child_start (EV_P_ struct ev_child *w)	1784	ev_child_start (EV_P_ ev_child *w)
1305	{	1785	{
1306	#if EV_MULTIPLICITY	1786	#if EV_MULTIPLICITY
1307	assert (("child watchers are only supported in the default loop", loop == default_loop));	1787	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1308	#endif	1788	#endif
1309	if (ev_is_active (w))	1789	if (expect_false (ev_is_active (w)))
1310	return;	1790	return;
1311		1791
1312	ev_start (EV_A_ (W)w, 1);	1792	ev_start (EV_A_ (W)w, 1);
1313	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1793	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1314	}	1794	}
1315		1795
1316	void	1796	void
1317	ev_child_stop (EV_P_ struct ev_child *w)	1797	ev_child_stop (EV_P_ ev_child *w)
1318	{	1798	{
1319	ev_clear_pending (EV_A_ (W)w);	1799	clear_pending (EV_A_ (W)w);
1320	if (ev_is_active (w))	1800	if (expect_false (!ev_is_active (w)))
1321	return;	1801	return;
1322		1802
1323	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1803	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1324	ev_stop (EV_A_ (W)w);	1804	ev_stop (EV_A_ (W)w);
1325	}	1805	}
1326		1806
		1807	#if EV_STAT_ENABLE
		1808
		1809	# ifdef _WIN32
		1810	# undef lstat
		1811	# define lstat(a,b) _stati64 (a,b)
		1812	# endif
		1813
		1814	#define DEF_STAT_INTERVAL 5.0074891
		1815	#define MIN_STAT_INTERVAL 0.1074891
		1816
		1817	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1818
		1819	#if EV_USE_INOTIFY
		1820	# define EV_INOTIFY_BUFSIZE 8192
		1821
		1822	static void noinline
		1823	infy_add (EV_P_ ev_stat *w)
		1824	{
		1825	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
		1826
		1827	if (w->wd < 0)
		1828	{
		1829	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1830
		1831	/* monitor some parent directory for speedup hints */
		1832	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1833	{
		1834	char path [4096];
		1835	strcpy (path, w->path);
		1836
		1837	do
		1838	{
		1839	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1840	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1841
		1842	char *pend = strrchr (path, '/');
		1843
		1844	if (!pend)
		1845	break; /* whoops, no '/', complain to your admin */
		1846
		1847	*pend = 0;
		1848	w->wd = inotify_add_watch (fs_fd, path, mask);
		1849	}
		1850	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1851	}
		1852	}
		1853	else
		1854	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1855
		1856	if (w->wd >= 0)
		1857	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1858	}
		1859
		1860	static void noinline
		1861	infy_del (EV_P_ ev_stat *w)
		1862	{
		1863	int slot;
		1864	int wd = w->wd;
		1865
		1866	if (wd < 0)
		1867	return;
		1868
		1869	w->wd = -2;
		1870	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1871	wlist_del (&fs_hash [slot].head, (WL)w);
		1872
		1873	/* remove this watcher, if others are watching it, they will rearm */
		1874	inotify_rm_watch (fs_fd, wd);
		1875	}
		1876
		1877	static void noinline
		1878	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1879	{
		1880	if (slot < 0)
		1881	/* overflow, need to check for all hahs slots */
		1882	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1883	infy_wd (EV_A_ slot, wd, ev);
		1884	else
		1885	{
		1886	WL w_;
		1887
		1888	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1889	{
		1890	ev_stat *w = (ev_stat *)w_;
		1891	w_ = w_->next; /* lets us remove this watcher and all before it */
		1892
		1893	if (w->wd == wd || wd == -1)
		1894	{
		1895	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1896	{
		1897	w->wd = -1;
		1898	infy_add (EV_A_ w); /* re-add, no matter what */
		1899	}
		1900
		1901	stat_timer_cb (EV_A_ &w->timer, 0);
		1902	}
		1903	}
		1904	}
		1905	}
		1906
		1907	static void
		1908	infy_cb (EV_P_ ev_io *w, int revents)
		1909	{
		1910	char buf [EV_INOTIFY_BUFSIZE];
		1911	struct inotify_event *ev = (struct inotify_event *)buf;
		1912	int ofs;
		1913	int len = read (fs_fd, buf, sizeof (buf));
		1914
		1915	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1916	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1917	}
		1918
		1919	void inline_size
		1920	infy_init (EV_P)
		1921	{
		1922	if (fs_fd != -2)
		1923	return;
		1924
		1925	fs_fd = inotify_init ();
		1926
		1927	if (fs_fd >= 0)
		1928	{
		1929	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1930	ev_set_priority (&fs_w, EV_MAXPRI);
		1931	ev_io_start (EV_A_ &fs_w);
		1932	}
		1933	}
		1934
		1935	void inline_size
		1936	infy_fork (EV_P)
		1937	{
		1938	int slot;
		1939
		1940	if (fs_fd < 0)
		1941	return;
		1942
		1943	close (fs_fd);
		1944	fs_fd = inotify_init ();
		1945
		1946	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1947	{
		1948	WL w_ = fs_hash [slot].head;
		1949	fs_hash [slot].head = 0;
		1950
		1951	while (w_)
		1952	{
		1953	ev_stat *w = (ev_stat *)w_;
		1954	w_ = w_->next; /* lets us add this watcher */
		1955
		1956	w->wd = -1;
		1957
		1958	if (fs_fd >= 0)
		1959	infy_add (EV_A_ w); /* re-add, no matter what */
		1960	else
		1961	ev_timer_start (EV_A_ &w->timer);
		1962	}
		1963
		1964	}
		1965	}
		1966
		1967	#endif
		1968
		1969	void
		1970	ev_stat_stat (EV_P_ ev_stat *w)
		1971	{
		1972	if (lstat (w->path, &w->attr) < 0)
		1973	w->attr.st_nlink = 0;
		1974	else if (!w->attr.st_nlink)
		1975	w->attr.st_nlink = 1;
		1976	}
		1977
		1978	static void noinline
		1979	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1980	{
		1981	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1982
		1983	/* we copy this here each the time so that */
		1984	/* prev has the old value when the callback gets invoked */
		1985	w->prev = w->attr;
		1986	ev_stat_stat (EV_A_ w);
		1987
		1988	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1989	if (
		1990	w->prev.st_dev != w->attr.st_dev
		1991	|| w->prev.st_ino != w->attr.st_ino
		1992	|| w->prev.st_mode != w->attr.st_mode
		1993	|| w->prev.st_nlink != w->attr.st_nlink
		1994	|| w->prev.st_uid != w->attr.st_uid
		1995	|| w->prev.st_gid != w->attr.st_gid
		1996	|| w->prev.st_rdev != w->attr.st_rdev
		1997	|| w->prev.st_size != w->attr.st_size
		1998	|| w->prev.st_atime != w->attr.st_atime
		1999	|| w->prev.st_mtime != w->attr.st_mtime
		2000	|| w->prev.st_ctime != w->attr.st_ctime
		2001	) {
		2002	#if EV_USE_INOTIFY
		2003	infy_del (EV_A_ w);
		2004	infy_add (EV_A_ w);
		2005	ev_stat_stat (EV_A_ w); /* avoid race... */
		2006	#endif
		2007
		2008	ev_feed_event (EV_A_ w, EV_STAT);
		2009	}
		2010	}
		2011
		2012	void
		2013	ev_stat_start (EV_P_ ev_stat *w)
		2014	{
		2015	if (expect_false (ev_is_active (w)))
		2016	return;
		2017
		2018	/* since we use memcmp, we need to clear any padding data etc. */
		2019	memset (&w->prev, 0, sizeof (ev_statdata));
		2020	memset (&w->attr, 0, sizeof (ev_statdata));
		2021
		2022	ev_stat_stat (EV_A_ w);
		2023
		2024	if (w->interval < MIN_STAT_INTERVAL)
		2025	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2026
		2027	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2028	ev_set_priority (&w->timer, ev_priority (w));
		2029
		2030	#if EV_USE_INOTIFY
		2031	infy_init (EV_A);
		2032
		2033	if (fs_fd >= 0)
		2034	infy_add (EV_A_ w);
		2035	else
		2036	#endif
		2037	ev_timer_start (EV_A_ &w->timer);
		2038
		2039	ev_start (EV_A_ (W)w, 1);
		2040	}
		2041
		2042	void
		2043	ev_stat_stop (EV_P_ ev_stat *w)
		2044	{
		2045	clear_pending (EV_A_ (W)w);
		2046	if (expect_false (!ev_is_active (w)))
		2047	return;
		2048
		2049	#if EV_USE_INOTIFY
		2050	infy_del (EV_A_ w);
		2051	#endif
		2052	ev_timer_stop (EV_A_ &w->timer);
		2053
		2054	ev_stop (EV_A_ (W)w);
		2055	}
		2056	#endif
		2057
		2058	#if EV_IDLE_ENABLE
		2059	void
		2060	ev_idle_start (EV_P_ ev_idle *w)
		2061	{
		2062	if (expect_false (ev_is_active (w)))
		2063	return;
		2064
		2065	pri_adjust (EV_A_ (W)w);
		2066
		2067	{
		2068	int active = ++idlecnt [ABSPRI (w)];
		2069
		2070	++idleall;
		2071	ev_start (EV_A_ (W)w, active);
		2072
		2073	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2074	idles [ABSPRI (w)][active - 1] = w;
		2075	}
		2076	}
		2077
		2078	void
		2079	ev_idle_stop (EV_P_ ev_idle *w)
		2080	{
		2081	clear_pending (EV_A_ (W)w);
		2082	if (expect_false (!ev_is_active (w)))
		2083	return;
		2084
		2085	{
		2086	int active = ((W)w)->active;
		2087
		2088	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2089	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2090
		2091	ev_stop (EV_A_ (W)w);
		2092	--idleall;
		2093	}
		2094	}
		2095	#endif
		2096
		2097	void
		2098	ev_prepare_start (EV_P_ ev_prepare *w)
		2099	{
		2100	if (expect_false (ev_is_active (w)))
		2101	return;
		2102
		2103	ev_start (EV_A_ (W)w, ++preparecnt);
		2104	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2105	prepares [preparecnt - 1] = w;
		2106	}
		2107
		2108	void
		2109	ev_prepare_stop (EV_P_ ev_prepare *w)
		2110	{
		2111	clear_pending (EV_A_ (W)w);
		2112	if (expect_false (!ev_is_active (w)))
		2113	return;
		2114
		2115	{
		2116	int active = ((W)w)->active;
		2117	prepares [active - 1] = prepares [--preparecnt];
		2118	((W)prepares [active - 1])->active = active;
		2119	}
		2120
		2121	ev_stop (EV_A_ (W)w);
		2122	}
		2123
		2124	void
		2125	ev_check_start (EV_P_ ev_check *w)
		2126	{
		2127	if (expect_false (ev_is_active (w)))
		2128	return;
		2129
		2130	ev_start (EV_A_ (W)w, ++checkcnt);
		2131	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2132	checks [checkcnt - 1] = w;
		2133	}
		2134
		2135	void
		2136	ev_check_stop (EV_P_ ev_check *w)
		2137	{
		2138	clear_pending (EV_A_ (W)w);
		2139	if (expect_false (!ev_is_active (w)))
		2140	return;
		2141
		2142	{
		2143	int active = ((W)w)->active;
		2144	checks [active - 1] = checks [--checkcnt];
		2145	((W)checks [active - 1])->active = active;
		2146	}
		2147
		2148	ev_stop (EV_A_ (W)w);
		2149	}
		2150
		2151	#if EV_EMBED_ENABLE
		2152	void noinline
		2153	ev_embed_sweep (EV_P_ ev_embed *w)
		2154	{
		2155	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2156	}
		2157
		2158	static void
		2159	embed_cb (EV_P_ ev_io *io, int revents)
		2160	{
		2161	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2162
		2163	if (ev_cb (w))
		2164	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2165	else
		2166	ev_embed_sweep (loop, w);
		2167	}
		2168
		2169	void
		2170	ev_embed_start (EV_P_ ev_embed *w)
		2171	{
		2172	if (expect_false (ev_is_active (w)))
		2173	return;
		2174
		2175	{
		2176	struct ev_loop *loop = w->loop;
		2177	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2178	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2179	}
		2180
		2181	ev_set_priority (&w->io, ev_priority (w));
		2182	ev_io_start (EV_A_ &w->io);
		2183
		2184	ev_start (EV_A_ (W)w, 1);
		2185	}
		2186
		2187	void
		2188	ev_embed_stop (EV_P_ ev_embed *w)
		2189	{
		2190	clear_pending (EV_A_ (W)w);
		2191	if (expect_false (!ev_is_active (w)))
		2192	return;
		2193
		2194	ev_io_stop (EV_A_ &w->io);
		2195
		2196	ev_stop (EV_A_ (W)w);
		2197	}
		2198	#endif
		2199
		2200	#if EV_FORK_ENABLE
		2201	void
		2202	ev_fork_start (EV_P_ ev_fork *w)
		2203	{
		2204	if (expect_false (ev_is_active (w)))
		2205	return;
		2206
		2207	ev_start (EV_A_ (W)w, ++forkcnt);
		2208	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2209	forks [forkcnt - 1] = w;
		2210	}
		2211
		2212	void
		2213	ev_fork_stop (EV_P_ ev_fork *w)
		2214	{
		2215	clear_pending (EV_A_ (W)w);
		2216	if (expect_false (!ev_is_active (w)))
		2217	return;
		2218
		2219	{
		2220	int active = ((W)w)->active;
		2221	forks [active - 1] = forks [--forkcnt];
		2222	((W)forks [active - 1])->active = active;
		2223	}
		2224
		2225	ev_stop (EV_A_ (W)w);
		2226	}
		2227	#endif
		2228
1327	/*****************************************************************************/	2229	/*****************************************************************************/
1328		2230
1329	struct ev_once	2231	struct ev_once
1330	{	2232	{
1331	struct ev_io io;	2233	ev_io io;
1332	struct ev_timer to;	2234	ev_timer to;
1333	void (*cb)(int revents, void *arg);	2235	void (*cb)(int revents, void *arg);
1334	void *arg;	2236	void *arg;
1335	};	2237	};
1336		2238
1337	static void	2239	static void
…		…
1340	void (*cb)(int revents, void *arg) = once->cb;	2242	void (*cb)(int revents, void *arg) = once->cb;
1341	void *arg = once->arg;	2243	void *arg = once->arg;
1342		2244
1343	ev_io_stop (EV_A_ &once->io);	2245	ev_io_stop (EV_A_ &once->io);
1344	ev_timer_stop (EV_A_ &once->to);	2246	ev_timer_stop (EV_A_ &once->to);
1345	free (once);	2247	ev_free (once);
1346		2248
1347	cb (revents, arg);	2249	cb (revents, arg);
1348	}	2250	}
1349		2251
1350	static void	2252	static void
1351	once_cb_io (EV_P_ struct ev_io *w, int revents)	2253	once_cb_io (EV_P_ ev_io *w, int revents)
1352	{	2254	{
1353	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2255	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1354	}	2256	}
1355		2257
1356	static void	2258	static void
1357	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2259	once_cb_to (EV_P_ ev_timer *w, int revents)
1358	{	2260	{
1359	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2261	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1360	}	2262	}
1361		2263
1362	void	2264	void
1363	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2265	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1364	{	2266	{
1365	struct ev_once *once = malloc (sizeof (struct ev_once));	2267	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1366		2268
1367	if (!once)	2269	if (expect_false (!once))
		2270	{
1368	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2271	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1369	else	2272	return;
1370	{	2273	}
		2274
1371	once->cb = cb;	2275	once->cb = cb;
1372	once->arg = arg;	2276	once->arg = arg;
1373		2277
1374	ev_watcher_init (&once->io, once_cb_io);	2278	ev_init (&once->io, once_cb_io);
1375	if (fd >= 0)	2279	if (fd >= 0)
1376	{	2280	{
1377	ev_io_set (&once->io, fd, events);	2281	ev_io_set (&once->io, fd, events);
1378	ev_io_start (EV_A_ &once->io);	2282	ev_io_start (EV_A_ &once->io);
1379	}	2283	}
1380		2284
1381	ev_watcher_init (&once->to, once_cb_to);	2285	ev_init (&once->to, once_cb_to);
1382	if (timeout >= 0.)	2286	if (timeout >= 0.)
1383	{	2287	{
1384	ev_timer_set (&once->to, timeout, 0.);	2288	ev_timer_set (&once->to, timeout, 0.);
1385	ev_timer_start (EV_A_ &once->to);	2289	ev_timer_start (EV_A_ &once->to);
1386	}
1387	}	2290	}
1388	}	2291	}
1389		2292
		2293	#ifdef __cplusplus
		2294	}
		2295	#endif
		2296

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