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Comparing libev/ev.c (file contents):
Revision 1.59 by root, Sun Nov 4 18:15:16 2007 UTC vs.
Revision 1.174 by root, Tue Dec 11 03:18:33 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
		42
		43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
		45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
		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
		57	# endif
		58
		59	# ifndef EV_USE_SELECT
		60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
		65	# endif
		66
		67	# ifndef EV_USE_POLL
		68	# if HAVE_POLL && HAVE_POLL_H
		69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
		73	# endif
		74
		75	# ifndef EV_USE_EPOLL
		76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
		81	# endif
		82
		83	# ifndef EV_USE_KQUEUE
		84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		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
		105	# endif
		106
33	#endif	107	#endif
34		108
35	#include <math.h>	109	#include <math.h>
36	#include <stdlib.h>	110	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	111	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	112	#include <stddef.h>
41		113
42	#include <stdio.h>	114	#include <stdio.h>
43		115
44	#include <assert.h>	116	#include <assert.h>
45	#include <errno.h>	117	#include <errno.h>
46	#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
47	#ifndef WIN32	129	#ifndef _WIN32
		130	# include <sys/time.h>
48	# 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
49	#endif	138	# endif
50	#include <sys/time.h>	139	#endif
51	#include <time.h>
52		140
53	/**/	141	/**/
54		142
55	#ifndef EV_USE_MONOTONIC	143	#ifndef EV_USE_MONOTONIC
56	# 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
57	#endif	149	#endif
58		150
59	#ifndef EV_USE_SELECT	151	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	152	# define EV_USE_SELECT 1
61	#endif	153	#endif
62		154
63	#ifndef EV_USE_POLL	155	#ifndef EV_USE_POLL
64	# 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
65	#endif	161	#endif
66		162
67	#ifndef EV_USE_EPOLL	163	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	164	# define EV_USE_EPOLL 0
69	#endif	165	#endif
70		166
71	#ifndef EV_USE_KQUEUE	167	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	168	# define EV_USE_KQUEUE 0
73	#endif	169	#endif
74		170
75	#ifndef EV_USE_REALTIME	171	#ifndef EV_USE_PORT
76	# 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
77	#endif	193	#endif
78		194
79	/**/	195	/**/
80		196
81	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
…		…
86	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	203	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
89	#endif	205	#endif
90		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
91	/**/	219	/**/
92		220
93	#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) */
94	#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) */
95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
96	/*#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 */
97
98	#include "ev.h"
99		224
100	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	226	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	227	# define noinline __attribute__ ((noinline))
103	#else	228	#else
104	# define expect(expr,value) (expr)	229	# define expect(expr,value) (expr)
105	# define inline static	230	# define noinline
		231	# if __STDC_VERSION__ < 199901L
		232	# define inline
		233	# endif
106	#endif	234	#endif
107		235
108	#define expect_false(expr) expect ((expr) != 0, 0)	236	#define expect_false(expr) expect ((expr) != 0, 0)
109	#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
110		245
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	246	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	247	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
113		248
		249	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		250	#define EMPTY2(a,b) /* used to suppress some warnings */
		251
114	typedef struct ev_watcher *W;	252	typedef ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	253	typedef ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	254	typedef ev_watcher_time *WT;
117		255
118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	256	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119		257
		258	#ifdef _WIN32
		259	# include "ev_win32.c"
		260	#endif
		261
120	/*****************************************************************************/	262	/*****************************************************************************/
121		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
122	typedef struct	314	typedef struct
123	{	315	{
124	struct ev_watcher_list *head;	316	WL head;
125	unsigned char events;	317	unsigned char events;
126	unsigned char reify;	318	unsigned char reify;
		319	#if EV_SELECT_IS_WINSOCKET
		320	SOCKET handle;
		321	#endif
127	} ANFD;	322	} ANFD;
128		323
129	typedef struct	324	typedef struct
130	{	325	{
131	W w;	326	W w;
132	int events;	327	int events;
133	} ANPENDING;	328	} ANPENDING;
134		329
		330	#if EV_USE_INOTIFY
		331	typedef struct
		332	{
		333	WL head;
		334	} ANFS;
		335	#endif
		336
135	#if EV_MULTIPLICITY	337	#if EV_MULTIPLICITY
136		338
137	struct ev_loop	339	struct ev_loop
138	{	340	{
		341	ev_tstamp ev_rt_now;
		342	#define ev_rt_now ((loop)->ev_rt_now)
139	# define VAR(name,decl) decl;	343	#define VAR(name,decl) decl;
140	# include "ev_vars.h"	344	#include "ev_vars.h"
141	};
142	# undef VAR	345	#undef VAR
		346	};
143	# 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;
144		351
145	#else	352	#else
146		353
		354	ev_tstamp ev_rt_now;
147	# define VAR(name,decl) static decl;	355	#define VAR(name,decl) static decl;
148	# include "ev_vars.h"	356	#include "ev_vars.h"
149	# undef VAR	357	#undef VAR
		358
		359	static int ev_default_loop_ptr;
150		360
151	#endif	361	#endif
152		362
153	/*****************************************************************************/	363	/*****************************************************************************/
154		364
155	inline ev_tstamp	365	ev_tstamp
156	ev_time (void)	366	ev_time (void)
157	{	367	{
158	#if EV_USE_REALTIME	368	#if EV_USE_REALTIME
159	struct timespec ts;	369	struct timespec ts;
160	clock_gettime (CLOCK_REALTIME, &ts);	370	clock_gettime (CLOCK_REALTIME, &ts);
…		…
164	gettimeofday (&tv, 0);	374	gettimeofday (&tv, 0);
165	return tv.tv_sec + tv.tv_usec * 1e-6;	375	return tv.tv_sec + tv.tv_usec * 1e-6;
166	#endif	376	#endif
167	}	377	}
168		378
169	inline ev_tstamp	379	ev_tstamp inline_size
170	get_clock (void)	380	get_clock (void)
171	{	381	{
172	#if EV_USE_MONOTONIC	382	#if EV_USE_MONOTONIC
173	if (expect_true (have_monotonic))	383	if (expect_true (have_monotonic))
174	{	384	{
…		…
179	#endif	389	#endif
180		390
181	return ev_time ();	391	return ev_time ();
182	}	392	}
183		393
		394	#if EV_MULTIPLICITY
184	ev_tstamp	395	ev_tstamp
185	ev_now (EV_P)	396	ev_now (EV_P)
186	{	397	{
187	return rt_now;	398	return ev_rt_now;
188	}	399	}
		400	#endif
189		401
190	#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;
191		406
		407	do
		408	ncur <<= 1;
		409	while (cnt > ncur);
		410
		411	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		412	if (elem * ncur > 4096)
		413	{
		414	ncur *= elem;
		415	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		416	ncur = ncur - sizeof (void *) * 4;
		417	ncur /= elem;
		418	}
		419
		420	return ncur;
		421	}
		422
		423	static noinline void *
		424	array_realloc (int elem, void *base, int *cur, int cnt)
		425	{
		426	*cur = array_nextsize (elem, *cur, cnt);
		427	return ev_realloc (base, elem * *cur);
		428	}
		429
192	#define array_needsize(base,cur,cnt,init) \	430	#define array_needsize(type,base,cur,cnt,init) \
193	if (expect_false ((cnt) > cur)) \	431	if (expect_false ((cnt) > (cur))) \
194	{ \	432	{ \
195	int newcnt = cur; \	433	int ocur_ = (cur); \
196	do \	434	(base) = (type *)array_realloc \
197	{ \	435	(sizeof (type), (base), &(cur), (cnt)); \
198	newcnt = array_roundsize (base, newcnt << 1); \	436	init ((base) + (ocur_), (cur) - ocur_); \
199	} \	437	}
200	while ((cnt) > newcnt); \	438
		439	#if 0
		440	#define array_slim(type,stem) \
		441	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
201	\	442	{ \
202	base = realloc (base, sizeof (*base) * (newcnt)); \	443	stem ## max = array_roundsize (stem ## cnt >> 1); \
203	init (base + cur, newcnt - cur); \	444	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
204	cur = newcnt; \	445	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
205	}	446	}
		447	#endif
		448
		449	#define array_free(stem, idx) \
		450	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
206		451
207	/*****************************************************************************/	452	/*****************************************************************************/
208		453
209	static void	454	void noinline
		455	ev_feed_event (EV_P_ void *w, int revents)
		456	{
		457	W w_ = (W)w;
		458	int pri = ABSPRI (w_);
		459
		460	if (expect_false (w_->pending))
		461	pendings [pri][w_->pending - 1].events |= revents;
		462	else
		463	{
		464	w_->pending = ++pendingcnt [pri];
		465	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		466	pendings [pri][w_->pending - 1].w = w_;
		467	pendings [pri][w_->pending - 1].events = revents;
		468	}
		469	}
		470
		471	void inline_size
		472	queue_events (EV_P_ W *events, int eventcnt, int type)
		473	{
		474	int i;
		475
		476	for (i = 0; i < eventcnt; ++i)
		477	ev_feed_event (EV_A_ events [i], type);
		478	}
		479
		480	/*****************************************************************************/
		481
		482	void inline_size
210	anfds_init (ANFD *base, int count)	483	anfds_init (ANFD *base, int count)
211	{	484	{
212	while (count--)	485	while (count--)
213	{	486	{
214	base->head = 0;	487	base->head = 0;
…		…
217		490
218	++base;	491	++base;
219	}	492	}
220	}	493	}
221		494
222	static void	495	void inline_speed
223	event (EV_P_ W w, int events)
224	{
225	if (w->pending)
226	{
227	pendings [ABSPRI (w)][w->pending - 1].events |= events;
228	return;
229	}
230
231	w->pending = ++pendingcnt [ABSPRI (w)];
232	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
233	pendings [ABSPRI (w)][w->pending - 1].w = w;
234	pendings [ABSPRI (w)][w->pending - 1].events = events;
235	}
236
237	static void
238	queue_events (EV_P_ W *events, int eventcnt, int type)
239	{
240	int i;
241
242	for (i = 0; i < eventcnt; ++i)
243	event (EV_A_ events [i], type);
244	}
245
246	static void
247	fd_event (EV_P_ int fd, int events)	496	fd_event (EV_P_ int fd, int revents)
248	{	497	{
249	ANFD *anfd = anfds + fd;	498	ANFD *anfd = anfds + fd;
250	struct ev_io *w;	499	ev_io *w;
251		500
252	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)
253	{	502	{
254	int ev = w->events & events;	503	int ev = w->events & revents;
255		504
256	if (ev)	505	if (ev)
257	event (EV_A_ (W)w, ev);	506	ev_feed_event (EV_A_ (W)w, ev);
258	}	507	}
259	}	508	}
260		509
261	/*****************************************************************************/	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	}
262		516
263	static void	517	void inline_size
264	fd_reify (EV_P)	518	fd_reify (EV_P)
265	{	519	{
266	int i;	520	int i;
267		521
268	for (i = 0; i < fdchangecnt; ++i)	522	for (i = 0; i < fdchangecnt; ++i)
269	{	523	{
270	int fd = fdchanges [i];	524	int fd = fdchanges [i];
271	ANFD *anfd = anfds + fd;	525	ANFD *anfd = anfds + fd;
272	struct ev_io *w;	526	ev_io *w;
273		527
274	int events = 0;	528	int events = 0;
275		529
276	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)
277	events |= w->events;	531	events |= w->events;
278		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
279	anfd->reify = 0;	542	anfd->reify = 0;
280		543
281	if (anfd->events != events)
282	{
283	method_modify (EV_A_ fd, anfd->events, events);	544	backend_modify (EV_A_ fd, anfd->events, events);
284	anfd->events = events;	545	anfd->events = events;
285	}
286	}	546	}
287		547
288	fdchangecnt = 0;	548	fdchangecnt = 0;
289	}	549	}
290		550
291	static void	551	void inline_size
292	fd_change (EV_P_ int fd)	552	fd_change (EV_P_ int fd)
293	{	553	{
294	if (anfds [fd].reify || fdchangecnt < 0)	554	if (expect_false (anfds [fd].reify))
295	return;	555	return;
296		556
297	anfds [fd].reify = 1;	557	anfds [fd].reify = 1;
298		558
299	++fdchangecnt;	559	++fdchangecnt;
300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	560	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
301	fdchanges [fdchangecnt - 1] = fd;	561	fdchanges [fdchangecnt - 1] = fd;
302	}	562	}
303		563
304	static void	564	void inline_speed
305	fd_kill (EV_P_ int fd)	565	fd_kill (EV_P_ int fd)
306	{	566	{
307	struct ev_io *w;	567	ev_io *w;
308		568
309	while ((w = (struct ev_io *)anfds [fd].head))	569	while ((w = (ev_io *)anfds [fd].head))
310	{	570	{
311	ev_io_stop (EV_A_ w);	571	ev_io_stop (EV_A_ w);
312	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);
313	}	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
314	}	584	}
315		585
316	/* called on EBADF to verify fds */	586	/* called on EBADF to verify fds */
317	static void	587	static void noinline
318	fd_ebadf (EV_P)	588	fd_ebadf (EV_P)
319	{	589	{
320	int fd;	590	int fd;
321		591
322	for (fd = 0; fd < anfdmax; ++fd)	592	for (fd = 0; fd < anfdmax; ++fd)
323	if (anfds [fd].events)	593	if (anfds [fd].events)
324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	594	if (!fd_valid (fd) == -1 && errno == EBADF)
325	fd_kill (EV_A_ fd);	595	fd_kill (EV_A_ fd);
326	}	596	}
327		597
328	/* 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 */
329	static void	599	static void noinline
330	fd_enomem (EV_P)	600	fd_enomem (EV_P)
331	{	601	{
332	int fd = anfdmax;	602	int fd;
333		603
334	while (fd--)	604	for (fd = anfdmax; fd--; )
335	if (anfds [fd].events)	605	if (anfds [fd].events)
336	{	606	{
337	close (fd);
338	fd_kill (EV_A_ fd);	607	fd_kill (EV_A_ fd);
339	return;	608	return;
340	}	609	}
341	}	610	}
342		611
343	/* 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 */
344	static void	613	static void noinline
345	fd_rearm_all (EV_P)	614	fd_rearm_all (EV_P)
346	{	615	{
347	int fd;	616	int fd;
348		617
349	/* this should be highly optimised to not do anything but set a flag */
350	for (fd = 0; fd < anfdmax; ++fd)	618	for (fd = 0; fd < anfdmax; ++fd)
351	if (anfds [fd].events)	619	if (anfds [fd].events)
352	{	620	{
353	anfds [fd].events = 0;	621	anfds [fd].events = 0;
354	fd_change (fd);	622	fd_change (EV_A_ fd);
355	}	623	}
356	}	624	}
357		625
358	/*****************************************************************************/	626	/*****************************************************************************/
359		627
360	static void	628	void inline_speed
361	upheap (WT *heap, int k)	629	upheap (WT *heap, int k)
362	{	630	{
363	WT w = heap [k];	631	WT w = heap [k];
364		632
365	while (k && heap [k >> 1]->at > w->at)	633	while (k && heap [k >> 1]->at > w->at)
366	{	634	{
367	heap [k] = heap [k >> 1];	635	heap [k] = heap [k >> 1];
368	heap [k]->active = k + 1;	636	((W)heap [k])->active = k + 1;
369	k >>= 1;	637	k >>= 1;
370	}	638	}
371		639
372	heap [k] = w;	640	heap [k] = w;
373	heap [k]->active = k + 1;	641	((W)heap [k])->active = k + 1;
374		642
375	}	643	}
376		644
377	static void	645	void inline_speed
378	downheap (WT *heap, int N, int k)	646	downheap (WT *heap, int N, int k)
379	{	647	{
380	WT w = heap [k];	648	WT w = heap [k];
381		649
382	while (k < (N >> 1))	650	while (k < (N >> 1))
…		…
388		656
389	if (w->at <= heap [j]->at)	657	if (w->at <= heap [j]->at)
390	break;	658	break;
391		659
392	heap [k] = heap [j];	660	heap [k] = heap [j];
393	heap [k]->active = k + 1;	661	((W)heap [k])->active = k + 1;
394	k = j;	662	k = j;
395	}	663	}
396		664
397	heap [k] = w;	665	heap [k] = w;
398	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);
399	}	674	}
400		675
401	/*****************************************************************************/	676	/*****************************************************************************/
402		677
403	typedef struct	678	typedef struct
404	{	679	{
405	struct ev_watcher_list *head;	680	WL head;
406	sig_atomic_t volatile gotsig;	681	sig_atomic_t volatile gotsig;
407	} ANSIG;	682	} ANSIG;
408		683
409	static ANSIG *signals;	684	static ANSIG *signals;
410	static int signalmax;	685	static int signalmax;
411		686
412	static int sigpipe [2];	687	static int sigpipe [2];
413	static sig_atomic_t volatile gotsig;	688	static sig_atomic_t volatile gotsig;
414	static struct ev_io sigev;	689	static ev_io sigev;
415		690
416	static void	691	void inline_size
417	signals_init (ANSIG *base, int count)	692	signals_init (ANSIG *base, int count)
418	{	693	{
419	while (count--)	694	while (count--)
420	{	695	{
421	base->head = 0;	696	base->head = 0;
…		…
426	}	701	}
427		702
428	static void	703	static void
429	sighandler (int signum)	704	sighandler (int signum)
430	{	705	{
		706	#if _WIN32
		707	signal (signum, sighandler);
		708	#endif
		709
431	signals [signum - 1].gotsig = 1;	710	signals [signum - 1].gotsig = 1;
432		711
433	if (!gotsig)	712	if (!gotsig)
434	{	713	{
435	int old_errno = errno;	714	int old_errno = errno;
…		…
437	write (sigpipe [1], &signum, 1);	716	write (sigpipe [1], &signum, 1);
438	errno = old_errno;	717	errno = old_errno;
439	}	718	}
440	}	719	}
441		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
442	static void	741	static void
443	sigcb (EV_P_ struct ev_io *iow, int revents)	742	sigcb (EV_P_ ev_io *iow, int revents)
444	{	743	{
445	struct ev_watcher_list *w;
446	int signum;	744	int signum;
447		745
448	read (sigpipe [0], &revents, 1);	746	read (sigpipe [0], &revents, 1);
449	gotsig = 0;	747	gotsig = 0;
450		748
451	for (signum = signalmax; signum--; )	749	for (signum = signalmax; signum--; )
452	if (signals [signum].gotsig)	750	if (signals [signum].gotsig)
453	{	751	ev_feed_signal_event (EV_A_ signum + 1);
454	signals [signum].gotsig = 0;
455
456	for (w = signals [signum].head; w; w = w->next)
457	event (EV_A_ (W)w, EV_SIGNAL);
458	}
459	}	752	}
460		753
461	static void	754	void inline_speed
		755	fd_intern (int fd)
		756	{
		757	#ifdef _WIN32
		758	int arg = 1;
		759	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		760	#else
		761	fcntl (fd, F_SETFD, FD_CLOEXEC);
		762	fcntl (fd, F_SETFL, O_NONBLOCK);
		763	#endif
		764	}
		765
		766	static void noinline
462	siginit (EV_P)	767	siginit (EV_P)
463	{	768	{
464	#ifndef WIN32	769	fd_intern (sigpipe [0]);
465	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	770	fd_intern (sigpipe [1]);
466	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
467
468	/* rather than sort out wether we really need nb, set it */
469	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
470	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
471	#endif
472		771
473	ev_io_set (&sigev, sigpipe [0], EV_READ);	772	ev_io_set (&sigev, sigpipe [0], EV_READ);
474	ev_io_start (EV_A_ &sigev);	773	ev_io_start (EV_A_ &sigev);
475	ev_unref (EV_A); /* child watcher should not keep loop alive */	774	ev_unref (EV_A); /* child watcher should not keep loop alive */
476	}	775	}
477		776
478	/*****************************************************************************/	777	/*****************************************************************************/
479		778
		779	static ev_child *childs [EV_PID_HASHSIZE];
		780
480	#ifndef WIN32	781	#ifndef _WIN32
481		782
482	static struct ev_child *childs [PID_HASHSIZE];
483	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	}
484		799
485	#ifndef WCONTINUED	800	#ifndef WCONTINUED
486	# define WCONTINUED 0	801	# define WCONTINUED 0
487	#endif	802	#endif
488		803
489	static void	804	static void
490	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
491	{
492	struct ev_child *w;
493
494	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
495	if (w->pid == pid || !w->pid)
496	{
497	w->priority = sw->priority; /* need to do it *now* */
498	w->rpid = pid;
499	w->rstatus = status;
500	event (EV_A_ (W)w, EV_CHILD);
501	}
502	}
503
504	static void
505	childcb (EV_P_ struct ev_signal *sw, int revents)	805	childcb (EV_P_ ev_signal *sw, int revents)
506	{	806	{
507	int pid, status;	807	int pid, status;
508		808
		809	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
509	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	810	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
510	{	811	if (!WCONTINUED
		812	|| errno != EINVAL
		813	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		814	return;
		815
511	/* 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 */
512	event (EV_A_ (W)sw, EV_SIGNAL);	818	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
513		819
514	child_reap (EV_A_ sw, pid, pid, status);	820	child_reap (EV_A_ sw, pid, pid, status);
		821	if (EV_PID_HASHSIZE > 1)
515	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 */
516	}
517	}	823	}
518		824
519	#endif	825	#endif
520		826
521	/*****************************************************************************/	827	/*****************************************************************************/
522		828
		829	#if EV_USE_PORT
		830	# include "ev_port.c"
		831	#endif
523	#if EV_USE_KQUEUE	832	#if EV_USE_KQUEUE
524	# include "ev_kqueue.c"	833	# include "ev_kqueue.c"
525	#endif	834	#endif
526	#if EV_USE_EPOLL	835	#if EV_USE_EPOLL
527	# include "ev_epoll.c"	836	# include "ev_epoll.c"
…		…
544	{	853	{
545	return EV_VERSION_MINOR;	854	return EV_VERSION_MINOR;
546	}	855	}
547		856
548	/* 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 */
549	static int	858	int inline_size
550	enable_secure (void)	859	enable_secure (void)
551	{	860	{
552	#ifdef WIN32	861	#ifdef _WIN32
553	return 0;	862	return 0;
554	#else	863	#else
555	return getuid () != geteuid ()	864	return getuid () != geteuid ()
556	|| getgid () != getegid ();	865	|| getgid () != getegid ();
557	#endif	866	#endif
558	}	867	}
559		868
560	int	869	unsigned int
561	ev_method (EV_P)	870	ev_supported_backends (void)
562	{	871	{
563	return method;	872	unsigned int flags = 0;
564	}
565		873
566	static void	874	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
567	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)
568	{	885	{
569	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)
570	{	925	{
571	#if EV_USE_MONOTONIC	926	#if EV_USE_MONOTONIC
572	{	927	{
573	struct timespec ts;	928	struct timespec ts;
574	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	929	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
575	have_monotonic = 1;	930	have_monotonic = 1;
576	}	931	}
577	#endif	932	#endif
578		933
579	rt_now = ev_time ();	934	ev_rt_now = ev_time ();
580	mn_now = get_clock ();	935	mn_now = get_clock ();
581	now_floor = mn_now;	936	now_floor = mn_now;
582	rtmn_diff = rt_now - mn_now;	937	rtmn_diff = ev_rt_now - mn_now;
583		938
584	if (methods == EVMETHOD_AUTO)	939	/* pid check not overridable via env */
585	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"))
586	methods = atoi (getenv ("LIBEV_METHODS"));	948	flags = atoi (getenv ("LIBEV_FLAGS"));
587	else
588	methods = EVMETHOD_ANY;
589		949
590	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
591	#if EV_USE_KQUEUE	962	#if EV_USE_KQUEUE
592	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	963	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
593	#endif	964	#endif
594	#if EV_USE_EPOLL	965	#if EV_USE_EPOLL
595	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	966	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
596	#endif	967	#endif
597	#if EV_USE_POLL	968	#if EV_USE_POLL
598	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	969	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
599	#endif	970	#endif
600	#if EV_USE_SELECT	971	#if EV_USE_SELECT
601	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	972	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
602	#endif	973	#endif
603	}
604	}
605		974
606	void	975	ev_init (&sigev, sigcb);
		976	ev_set_priority (&sigev, EV_MAXPRI);
		977	}
		978	}
		979
		980	static void noinline
607	loop_destroy (EV_P)	981	loop_destroy (EV_P)
608	{	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
609	#if EV_USE_KQUEUE	996	#if EV_USE_KQUEUE
610	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	997	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
611	#endif	998	#endif
612	#if EV_USE_EPOLL	999	#if EV_USE_EPOLL
613	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1000	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
614	#endif	1001	#endif
615	#if EV_USE_POLL	1002	#if EV_USE_POLL
616	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1003	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
617	#endif	1004	#endif
618	#if EV_USE_SELECT	1005	#if EV_USE_SELECT
619	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1006	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
620	#endif	1007	#endif
621		1008
622	method = 0;	1009	for (i = NUMPRI; i--; )
623	/*TODO*/	1010	{
624	}	1011	array_free (pending, [i]);
		1012	#if EV_IDLE_ENABLE
		1013	array_free (idle, [i]);
		1014	#endif
		1015	}
625		1016
626	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
627	loop_fork (EV_P)	1032	loop_fork (EV_P)
628	{	1033	{
629	/*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
630	#if EV_USE_EPOLL	1040	#if EV_USE_EPOLL
631	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1041	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
632	#endif	1042	#endif
633	#if EV_USE_KQUEUE	1043	#if EV_USE_INOTIFY
634	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1044	infy_fork (EV_A);
635	#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;
636	}	1063	}
637		1064
638	#if EV_MULTIPLICITY	1065	#if EV_MULTIPLICITY
639	struct ev_loop *	1066	struct ev_loop *
640	ev_loop_new (int methods)	1067	ev_loop_new (unsigned int flags)
641	{	1068	{
642	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));
643		1070
		1071	memset (loop, 0, sizeof (struct ev_loop));
		1072
644	loop_init (EV_A_ methods);	1073	loop_init (EV_A_ flags);
645		1074
646	if (ev_methods (EV_A))	1075	if (ev_backend (EV_A))
647	return loop;	1076	return loop;
648		1077
649	return 0;	1078	return 0;
650	}	1079	}
651		1080
652	void	1081	void
653	ev_loop_destroy (EV_P)	1082	ev_loop_destroy (EV_P)
654	{	1083	{
655	loop_destroy (EV_A);	1084	loop_destroy (EV_A);
656	free (loop);	1085	ev_free (loop);
657	}	1086	}
658		1087
659	void	1088	void
660	ev_loop_fork (EV_P)	1089	ev_loop_fork (EV_P)
661	{	1090	{
662	loop_fork (EV_A);	1091	postfork = 1;
663	}	1092	}
664		1093
665	#endif	1094	#endif
666		1095
667	#if EV_MULTIPLICITY	1096	#if EV_MULTIPLICITY
668	struct ev_loop default_loop_struct;
669	static struct ev_loop *default_loop;
670
671	struct ev_loop *	1097	struct ev_loop *
		1098	ev_default_loop_init (unsigned int flags)
672	#else	1099	#else
673	static int default_loop;
674
675	int	1100	int
		1101	ev_default_loop (unsigned int flags)
676	#endif	1102	#endif
677	ev_default_loop (int methods)
678	{	1103	{
679	if (sigpipe [0] == sigpipe [1])	1104	if (sigpipe [0] == sigpipe [1])
680	if (pipe (sigpipe))	1105	if (pipe (sigpipe))
681	return 0;	1106	return 0;
682		1107
683	if (!default_loop)	1108	if (!ev_default_loop_ptr)
684	{	1109	{
685	#if EV_MULTIPLICITY	1110	#if EV_MULTIPLICITY
686	struct ev_loop *loop = default_loop = &default_loop_struct;	1111	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
687	#else	1112	#else
688	default_loop = 1;	1113	ev_default_loop_ptr = 1;
689	#endif	1114	#endif
690		1115
691	loop_init (EV_A_ methods);	1116	loop_init (EV_A_ flags);
692		1117
693	if (ev_method (EV_A))	1118	if (ev_backend (EV_A))
694	{	1119	{
695	ev_watcher_init (&sigev, sigcb);
696	ev_set_priority (&sigev, EV_MAXPRI);
697	siginit (EV_A);	1120	siginit (EV_A);
698		1121
699	#ifndef WIN32	1122	#ifndef _WIN32
700	ev_signal_init (&childev, childcb, SIGCHLD);	1123	ev_signal_init (&childev, childcb, SIGCHLD);
701	ev_set_priority (&childev, EV_MAXPRI);	1124	ev_set_priority (&childev, EV_MAXPRI);
702	ev_signal_start (EV_A_ &childev);	1125	ev_signal_start (EV_A_ &childev);
703	ev_unref (EV_A); /* child watcher should not keep loop alive */	1126	ev_unref (EV_A); /* child watcher should not keep loop alive */
704	#endif	1127	#endif
705	}	1128	}
706	else	1129	else
707	default_loop = 0;	1130	ev_default_loop_ptr = 0;
708	}	1131	}
709		1132
710	return default_loop;	1133	return ev_default_loop_ptr;
711	}	1134	}
712		1135
713	void	1136	void
714	ev_default_destroy (void)	1137	ev_default_destroy (void)
715	{	1138	{
716	#if EV_MULTIPLICITY	1139	#if EV_MULTIPLICITY
717	struct ev_loop *loop = default_loop;	1140	struct ev_loop *loop = ev_default_loop_ptr;
718	#endif	1141	#endif
719		1142
		1143	#ifndef _WIN32
720	ev_ref (EV_A); /* child watcher */	1144	ev_ref (EV_A); /* child watcher */
721	ev_signal_stop (EV_A_ &childev);	1145	ev_signal_stop (EV_A_ &childev);
		1146	#endif
722		1147
723	ev_ref (EV_A); /* signal watcher */	1148	ev_ref (EV_A); /* signal watcher */
724	ev_io_stop (EV_A_ &sigev);	1149	ev_io_stop (EV_A_ &sigev);
725		1150
726	close (sigpipe [0]); sigpipe [0] = 0;	1151	close (sigpipe [0]); sigpipe [0] = 0;
…		…
728		1153
729	loop_destroy (EV_A);	1154	loop_destroy (EV_A);
730	}	1155	}
731		1156
732	void	1157	void
733	ev_default_fork (EV_P)	1158	ev_default_fork (void)
734	{	1159	{
735	loop_fork (EV_A);	1160	#if EV_MULTIPLICITY
		1161	struct ev_loop *loop = ev_default_loop_ptr;
		1162	#endif
736		1163
737	ev_io_stop (EV_A_ &sigev);	1164	if (backend)
738	close (sigpipe [0]);	1165	postfork = 1;
739	close (sigpipe [1]);
740	pipe (sigpipe);
741
742	ev_ref (EV_A); /* signal watcher */
743	siginit (EV_A);
744	}	1166	}
745		1167
746	/*****************************************************************************/	1168	/*****************************************************************************/
747		1169
748	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
749	call_pending (EV_P)	1177	call_pending (EV_P)
750	{	1178	{
751	int pri;	1179	int pri;
752		1180
753	for (pri = NUMPRI; pri--; )	1181	for (pri = NUMPRI; pri--; )
754	while (pendingcnt [pri])	1182	while (pendingcnt [pri])
755	{	1183	{
756	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1184	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
757		1185
758	if (p->w)	1186	if (expect_true (p->w))
759	{	1187	{
		1188	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1189
760	p->w->pending = 0;	1190	p->w->pending = 0;
761	p->w->cb (EV_A_ p->w, p->events);	1191	EV_CB_INVOKE (p->w, p->events);
762	}	1192	}
763	}	1193	}
764	}	1194	}
765		1195
766	static void	1196	void inline_size
767	timers_reify (EV_P)	1197	timers_reify (EV_P)
768	{	1198	{
769	while (timercnt && timers [0]->at <= mn_now)	1199	while (timercnt && ((WT)timers [0])->at <= mn_now)
770	{	1200	{
771	struct ev_timer *w = timers [0];	1201	ev_timer *w = timers [0];
		1202
		1203	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
772		1204
773	/* first reschedule or stop timer */	1205	/* first reschedule or stop timer */
774	if (w->repeat)	1206	if (w->repeat)
775	{	1207	{
776	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
777	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
778	downheap ((WT *)timers, timercnt, 0);	1214	downheap ((WT *)timers, timercnt, 0);
779	}	1215	}
780	else	1216	else
781	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1217	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
782		1218
783	event (EV_A_ (W)w, EV_TIMEOUT);	1219	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
784	}	1220	}
785	}	1221	}
786		1222
787	static void	1223	#if EV_PERIODIC_ENABLE
		1224	void inline_size
788	periodics_reify (EV_P)	1225	periodics_reify (EV_P)
789	{	1226	{
790	while (periodiccnt && periodics [0]->at <= rt_now)	1227	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
791	{	1228	{
792	struct ev_periodic *w = periodics [0];	1229	ev_periodic *w = periodics [0];
		1230
		1231	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
793		1232
794	/* first reschedule or stop timer */	1233	/* first reschedule or stop timer */
795	if (w->interval)	1234	if (w->reschedule_cb)
796	{	1235	{
		1236	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001220703125 /* 1/8192 */);
		1237	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1238	downheap ((WT *)periodics, periodiccnt, 0);
		1239	}
		1240	else if (w->interval)
		1241	{
797	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1242	((WT)w)->at = w->offset + floor ((ev_rt_now - w->offset) / w->interval + 1.) * w->interval;
798	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));
799	downheap ((WT *)periodics, periodiccnt, 0);	1244	downheap ((WT *)periodics, periodiccnt, 0);
800	}	1245	}
801	else	1246	else
802	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1247	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
803		1248
804	event (EV_A_ (W)w, EV_PERIODIC);	1249	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
805	}	1250	}
806	}	1251	}
807		1252
808	static void	1253	static void noinline
809	periodics_reschedule (EV_P)	1254	periodics_reschedule (EV_P)
810	{	1255	{
811	int i;	1256	int i;
812		1257
813	/* adjust periodics after time jump */	1258	/* adjust periodics after time jump */
814	for (i = 0; i < periodiccnt; ++i)	1259	for (i = 0; i < periodiccnt; ++i)
815	{	1260	{
816	struct ev_periodic *w = periodics [i];	1261	ev_periodic *w = periodics [i];
817		1262
		1263	if (w->reschedule_cb)
		1264	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
818	if (w->interval)	1265	else if (w->interval)
		1266	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1267	}
		1268
		1269	/* now rebuild the heap */
		1270	for (i = periodiccnt >> 1; i--; )
		1271	downheap ((WT *)periodics, periodiccnt, i);
		1272	}
		1273	#endif
		1274
		1275	#if EV_IDLE_ENABLE
		1276	void inline_size
		1277	idle_reify (EV_P)
		1278	{
		1279	if (expect_false (idleall))
		1280	{
		1281	int pri;
		1282
		1283	for (pri = NUMPRI; pri--; )
819	{	1284	{
820	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1285	if (pendingcnt [pri])
		1286	break;
821		1287
822	if (fabs (diff) >= 1e-4)	1288	if (idlecnt [pri])
823	{	1289	{
824	ev_periodic_stop (EV_A_ w);	1290	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
825	ev_periodic_start (EV_A_ w);	1291	break;
826
827	i = 0; /* restart loop, inefficient, but time jumps should be rare */
828	}	1292	}
829	}	1293	}
830	}	1294	}
831	}	1295	}
		1296	#endif
832		1297
833	inline int	1298	int inline_size
834	time_update_monotonic (EV_P)	1299	time_update_monotonic (EV_P)
835	{	1300	{
836	mn_now = get_clock ();	1301	mn_now = get_clock ();
837		1302
838	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1303	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
839	{	1304	{
840	rt_now = rtmn_diff + mn_now;	1305	ev_rt_now = rtmn_diff + mn_now;
841	return 0;	1306	return 0;
842	}	1307	}
843	else	1308	else
844	{	1309	{
845	now_floor = mn_now;	1310	now_floor = mn_now;
846	rt_now = ev_time ();	1311	ev_rt_now = ev_time ();
847	return 1;	1312	return 1;
848	}	1313	}
849	}	1314	}
850		1315
851	static void	1316	void inline_size
852	time_update (EV_P)	1317	time_update (EV_P)
853	{	1318	{
854	int i;	1319	int i;
855		1320
856	#if EV_USE_MONOTONIC	1321	#if EV_USE_MONOTONIC
…		…
858	{	1323	{
859	if (time_update_monotonic (EV_A))	1324	if (time_update_monotonic (EV_A))
860	{	1325	{
861	ev_tstamp odiff = rtmn_diff;	1326	ev_tstamp odiff = rtmn_diff;
862		1327
863	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; )
864	{	1337	{
865	rtmn_diff = rt_now - mn_now;	1338	rtmn_diff = ev_rt_now - mn_now;
866		1339
867	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1340	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
868	return; /* all is well */	1341	return; /* all is well */
869		1342
870	rt_now = ev_time ();	1343	ev_rt_now = ev_time ();
871	mn_now = get_clock ();	1344	mn_now = get_clock ();
872	now_floor = mn_now;	1345	now_floor = mn_now;
873	}	1346	}
874		1347
		1348	# if EV_PERIODIC_ENABLE
875	periodics_reschedule (EV_A);	1349	periodics_reschedule (EV_A);
		1350	# endif
876	/* no timer adjustment, as the monotonic clock doesn't jump */	1351	/* no timer adjustment, as the monotonic clock doesn't jump */
877	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1352	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
878	}	1353	}
879	}	1354	}
880	else	1355	else
881	#endif	1356	#endif
882	{	1357	{
883	rt_now = ev_time ();	1358	ev_rt_now = ev_time ();
884		1359
885	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))
886	{	1361	{
		1362	#if EV_PERIODIC_ENABLE
887	periodics_reschedule (EV_A);	1363	periodics_reschedule (EV_A);
		1364	#endif
888		1365
889	/* 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 */
890	for (i = 0; i < timercnt; ++i)	1367	for (i = 0; i < timercnt; ++i)
891	timers [i]->at += rt_now - mn_now;	1368	((WT)timers [i])->at += ev_rt_now - mn_now;
892	}	1369	}
893		1370
894	mn_now = rt_now;	1371	mn_now = ev_rt_now;
895	}	1372	}
896	}	1373	}
897		1374
898	void	1375	void
899	ev_ref (EV_P)	1376	ev_ref (EV_P)
…		…
910	static int loop_done;	1387	static int loop_done;
911		1388
912	void	1389	void
913	ev_loop (EV_P_ int flags)	1390	ev_loop (EV_P_ int flags)
914	{	1391	{
915	double block;
916	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 */
917		1397
918	do	1398	do
919	{	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
920	/* queue check watchers (and execute them) */	1419	/* queue prepare watchers (and execute them) */
921	if (expect_false (preparecnt))	1420	if (expect_false (preparecnt))
922	{	1421	{
923	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1422	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
924	call_pending (EV_A);	1423	call_pending (EV_A);
925	}	1424	}
926		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
927	/* update fd-related kernel structures */	1433	/* update fd-related kernel structures */
928	fd_reify (EV_A);	1434	fd_reify (EV_A);
929		1435
930	/* calculate blocking time */	1436	/* calculate blocking time */
		1437	{
		1438	ev_tstamp block;
931		1439
932	/* we only need this for !monotonic clockor timers, but as we basically	1440	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
933	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 */
934	#if EV_USE_MONOTONIC	1445	#if EV_USE_MONOTONIC
935	if (expect_true (have_monotonic))	1446	if (expect_true (have_monotonic))
936	time_update_monotonic (EV_A);	1447	time_update_monotonic (EV_A);
937	else	1448	else
938	#endif	1449	#endif
939	{	1450	{
940	rt_now = ev_time ();	1451	ev_rt_now = ev_time ();
941	mn_now = rt_now;	1452	mn_now = ev_rt_now;
942	}	1453	}
943		1454
944	if (flags & EVLOOP_NONBLOCK || idlecnt)
945	block = 0.;
946	else
947	{
948	block = MAX_BLOCKTIME;	1455	block = MAX_BLOCKTIME;
949		1456
950	if (timercnt)	1457	if (timercnt)
951	{	1458	{
952	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1459	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
953	if (block > to) block = to;	1460	if (block > to) block = to;
954	}	1461	}
955		1462
		1463	#if EV_PERIODIC_ENABLE
956	if (periodiccnt)	1464	if (periodiccnt)
957	{	1465	{
958	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1466	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
959	if (block > to) block = to;	1467	if (block > to) block = to;
960	}	1468	}
		1469	#endif
961		1470
962	if (block < 0.) block = 0.;	1471	if (expect_false (block < 0.)) block = 0.;
963	}	1472	}
964		1473
		1474	++loop_count;
965	method_poll (EV_A_ block);	1475	backend_poll (EV_A_ block);
		1476	}
966		1477
967	/* update rt_now, do magic */	1478	/* update ev_rt_now, do magic */
968	time_update (EV_A);	1479	time_update (EV_A);
969		1480
970	/* queue pending timers and reschedule them */	1481	/* queue pending timers and reschedule them */
971	timers_reify (EV_A); /* relative timers called last */	1482	timers_reify (EV_A); /* relative timers called last */
		1483	#if EV_PERIODIC_ENABLE
972	periodics_reify (EV_A); /* absolute timers called first */	1484	periodics_reify (EV_A); /* absolute timers called first */
		1485	#endif
973		1486
		1487	#if EV_IDLE_ENABLE
974	/* queue idle watchers unless io or timers are pending */	1488	/* queue idle watchers unless other events are pending */
975	if (!pendingcnt)	1489	idle_reify (EV_A);
976	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1490	#endif
977		1491
978	/* queue check watchers, to be executed first */	1492	/* queue check watchers, to be executed first */
979	if (checkcnt)	1493	if (expect_false (checkcnt))
980	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1494	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
981		1495
982	call_pending (EV_A);	1496	call_pending (EV_A);
		1497
983	}	1498	}
984	while (activecnt && !loop_done);	1499	while (expect_true (activecnt && !loop_done));
985		1500
986	if (loop_done != 2)	1501	if (loop_done == EVUNLOOP_ONE)
987	loop_done = 0;	1502	loop_done = EVUNLOOP_CANCEL;
988	}	1503	}
989		1504
990	void	1505	void
991	ev_unloop (EV_P_ int how)	1506	ev_unloop (EV_P_ int how)
992	{	1507	{
993	loop_done = how;	1508	loop_done = how;
994	}	1509	}
995		1510
996	/*****************************************************************************/	1511	/*****************************************************************************/
997		1512
998	inline void	1513	void inline_size
999	wlist_add (WL *head, WL elem)	1514	wlist_add (WL *head, WL elem)
1000	{	1515	{
1001	elem->next = *head;	1516	elem->next = *head;
1002	*head = elem;	1517	*head = elem;
1003	}	1518	}
1004		1519
1005	inline void	1520	void inline_size
1006	wlist_del (WL *head, WL elem)	1521	wlist_del (WL *head, WL elem)
1007	{	1522	{
1008	while (*head)	1523	while (*head)
1009	{	1524	{
1010	if (*head == elem)	1525	if (*head == elem)
…		…
1015		1530
1016	head = &(*head)->next;	1531	head = &(*head)->next;
1017	}	1532	}
1018	}	1533	}
1019		1534
1020	inline void	1535	void inline_speed
1021	ev_clear_pending (EV_P_ W w)	1536	clear_pending (EV_P_ W w)
1022	{	1537	{
1023	if (w->pending)	1538	if (w->pending)
1024	{	1539	{
1025	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1540	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1026	w->pending = 0;	1541	w->pending = 0;
1027	}	1542	}
1028	}	1543	}
1029		1544
1030	inline void	1545	int
		1546	ev_clear_pending (EV_P_ void *w)
		1547	{
		1548	W w_ = (W)w;
		1549	int pending = w_->pending;
		1550
		1551	if (expect_true (pending))
		1552	{
		1553	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1554	w_->pending = 0;
		1555	p->w = 0;
		1556	return p->events;
		1557	}
		1558	else
		1559	return 0;
		1560	}
		1561
		1562	void inline_size
		1563	pri_adjust (EV_P_ W w)
		1564	{
		1565	int pri = w->priority;
		1566	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1567	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1568	w->priority = pri;
		1569	}
		1570
		1571	void inline_speed
1031	ev_start (EV_P_ W w, int active)	1572	ev_start (EV_P_ W w, int active)
1032	{	1573	{
1033	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1574	pri_adjust (EV_A_ w);
1034	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1035
1036	w->active = active;	1575	w->active = active;
1037	ev_ref (EV_A);	1576	ev_ref (EV_A);
1038	}	1577	}
1039		1578
1040	inline void	1579	void inline_size
1041	ev_stop (EV_P_ W w)	1580	ev_stop (EV_P_ W w)
1042	{	1581	{
1043	ev_unref (EV_A);	1582	ev_unref (EV_A);
1044	w->active = 0;	1583	w->active = 0;
1045	}	1584	}
1046		1585
1047	/*****************************************************************************/	1586	/*****************************************************************************/
1048		1587
1049	void	1588	void noinline
1050	ev_io_start (EV_P_ struct ev_io *w)	1589	ev_io_start (EV_P_ ev_io *w)
1051	{	1590	{
1052	int fd = w->fd;	1591	int fd = w->fd;
1053		1592
1054	if (ev_is_active (w))	1593	if (expect_false (ev_is_active (w)))
1055	return;	1594	return;
1056		1595
1057	assert (("ev_io_start called with negative fd", fd >= 0));	1596	assert (("ev_io_start called with negative fd", fd >= 0));
1058		1597
1059	ev_start (EV_A_ (W)w, 1);	1598	ev_start (EV_A_ (W)w, 1);
1060	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1599	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1061	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1600	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1062		1601
1063	fd_change (EV_A_ fd);	1602	fd_change (EV_A_ fd);
1064	}	1603	}
1065		1604
1066	void	1605	void noinline
1067	ev_io_stop (EV_P_ struct ev_io *w)	1606	ev_io_stop (EV_P_ ev_io *w)
1068	{	1607	{
1069	ev_clear_pending (EV_A_ (W)w);	1608	clear_pending (EV_A_ (W)w);
1070	if (!ev_is_active (w))	1609	if (expect_false (!ev_is_active (w)))
1071	return;	1610	return;
		1611
		1612	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1072		1613
1073	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1614	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1074	ev_stop (EV_A_ (W)w);	1615	ev_stop (EV_A_ (W)w);
1075		1616
1076	fd_change (EV_A_ w->fd);	1617	fd_change (EV_A_ w->fd);
1077	}	1618	}
1078		1619
1079	void	1620	void noinline
1080	ev_timer_start (EV_P_ struct ev_timer *w)	1621	ev_timer_start (EV_P_ ev_timer *w)
1081	{	1622	{
1082	if (ev_is_active (w))	1623	if (expect_false (ev_is_active (w)))
1083	return;	1624	return;
1084		1625
1085	w->at += mn_now;	1626	((WT)w)->at += mn_now;
1086		1627
1087	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1628	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1088		1629
1089	ev_start (EV_A_ (W)w, ++timercnt);	1630	ev_start (EV_A_ (W)w, ++timercnt);
1090	array_needsize (timers, timermax, timercnt, );	1631	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1091	timers [timercnt - 1] = w;	1632	timers [timercnt - 1] = w;
1092	upheap ((WT *)timers, timercnt - 1);	1633	upheap ((WT *)timers, timercnt - 1);
1093	}
1094		1634
1095	void	1635	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1636	}
		1637
		1638	void noinline
1096	ev_timer_stop (EV_P_ struct ev_timer *w)	1639	ev_timer_stop (EV_P_ ev_timer *w)
1097	{	1640	{
1098	ev_clear_pending (EV_A_ (W)w);	1641	clear_pending (EV_A_ (W)w);
1099	if (!ev_is_active (w))	1642	if (expect_false (!ev_is_active (w)))
1100	return;	1643	return;
1101		1644
1102	if (w->active < timercnt--)	1645	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1646
		1647	{
		1648	int active = ((W)w)->active;
		1649
		1650	if (expect_true (--active < --timercnt))
1103	{	1651	{
1104	timers [w->active - 1] = timers [timercnt];	1652	timers [active] = timers [timercnt];
1105	downheap ((WT *)timers, timercnt, w->active - 1);	1653	adjustheap ((WT *)timers, timercnt, active);
1106	}	1654	}
		1655	}
1107		1656
1108	w->at = w->repeat;	1657	((WT)w)->at -= mn_now;
1109		1658
1110	ev_stop (EV_A_ (W)w);	1659	ev_stop (EV_A_ (W)w);
1111	}	1660	}
1112		1661
1113	void	1662	void noinline
1114	ev_timer_again (EV_P_ struct ev_timer *w)	1663	ev_timer_again (EV_P_ ev_timer *w)
1115	{	1664	{
1116	if (ev_is_active (w))	1665	if (ev_is_active (w))
1117	{	1666	{
1118	if (w->repeat)	1667	if (w->repeat)
1119	{	1668	{
1120	w->at = mn_now + w->repeat;	1669	((WT)w)->at = mn_now + w->repeat;
1121	downheap ((WT *)timers, timercnt, w->active - 1);	1670	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1122	}	1671	}
1123	else	1672	else
1124	ev_timer_stop (EV_A_ w);	1673	ev_timer_stop (EV_A_ w);
1125	}	1674	}
1126	else if (w->repeat)	1675	else if (w->repeat)
		1676	{
		1677	w->at = w->repeat;
1127	ev_timer_start (EV_A_ w);	1678	ev_timer_start (EV_A_ w);
		1679	}
1128	}	1680	}
1129		1681
1130	void	1682	#if EV_PERIODIC_ENABLE
		1683	void noinline
1131	ev_periodic_start (EV_P_ struct ev_periodic *w)	1684	ev_periodic_start (EV_P_ ev_periodic *w)
1132	{	1685	{
1133	if (ev_is_active (w))	1686	if (expect_false (ev_is_active (w)))
1134	return;	1687	return;
1135		1688
		1689	if (w->reschedule_cb)
		1690	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1691	else if (w->interval)
		1692	{
1136	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1693	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1137
1138	/* this formula differs from the one in periodic_reify because we do not always round up */	1694	/* this formula differs from the one in periodic_reify because we do not always round up */
1139	if (w->interval)
1140	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1695	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1696	}
		1697	else
		1698	((WT)w)->at = w->offset;
1141		1699
1142	ev_start (EV_A_ (W)w, ++periodiccnt);	1700	ev_start (EV_A_ (W)w, ++periodiccnt);
1143	array_needsize (periodics, periodicmax, periodiccnt, );	1701	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1144	periodics [periodiccnt - 1] = w;	1702	periodics [periodiccnt - 1] = w;
1145	upheap ((WT *)periodics, periodiccnt - 1);	1703	upheap ((WT *)periodics, periodiccnt - 1);
1146	}
1147		1704
1148	void	1705	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1706	}
		1707
		1708	void noinline
1149	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1709	ev_periodic_stop (EV_P_ ev_periodic *w)
1150	{	1710	{
1151	ev_clear_pending (EV_A_ (W)w);	1711	clear_pending (EV_A_ (W)w);
1152	if (!ev_is_active (w))	1712	if (expect_false (!ev_is_active (w)))
1153	return;	1713	return;
1154		1714
1155	if (w->active < periodiccnt--)	1715	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1716
		1717	{
		1718	int active = ((W)w)->active;
		1719
		1720	if (expect_true (--active < --periodiccnt))
1156	{	1721	{
1157	periodics [w->active - 1] = periodics [periodiccnt];	1722	periodics [active] = periodics [periodiccnt];
1158	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1723	adjustheap ((WT *)periodics, periodiccnt, active);
1159	}	1724	}
		1725	}
1160		1726
1161	ev_stop (EV_A_ (W)w);	1727	ev_stop (EV_A_ (W)w);
1162	}	1728	}
1163		1729
1164	void	1730	void noinline
1165	ev_idle_start (EV_P_ struct ev_idle *w)	1731	ev_periodic_again (EV_P_ ev_periodic *w)
1166	{	1732	{
1167	if (ev_is_active (w))	1733	/* TODO: use adjustheap and recalculation */
1168	return;
1169
1170	ev_start (EV_A_ (W)w, ++idlecnt);
1171	array_needsize (idles, idlemax, idlecnt, );
1172	idles [idlecnt - 1] = w;
1173	}
1174
1175	void
1176	ev_idle_stop (EV_P_ struct ev_idle *w)
1177	{
1178	ev_clear_pending (EV_A_ (W)w);
1179	if (ev_is_active (w))
1180	return;
1181
1182	idles [w->active - 1] = idles [--idlecnt];
1183	ev_stop (EV_A_ (W)w);	1734	ev_periodic_stop (EV_A_ w);
		1735	ev_periodic_start (EV_A_ w);
1184	}	1736	}
1185		1737	#endif
1186	void
1187	ev_prepare_start (EV_P_ struct ev_prepare *w)
1188	{
1189	if (ev_is_active (w))
1190	return;
1191
1192	ev_start (EV_A_ (W)w, ++preparecnt);
1193	array_needsize (prepares, preparemax, preparecnt, );
1194	prepares [preparecnt - 1] = w;
1195	}
1196
1197	void
1198	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1199	{
1200	ev_clear_pending (EV_A_ (W)w);
1201	if (ev_is_active (w))
1202	return;
1203
1204	prepares [w->active - 1] = prepares [--preparecnt];
1205	ev_stop (EV_A_ (W)w);
1206	}
1207
1208	void
1209	ev_check_start (EV_P_ struct ev_check *w)
1210	{
1211	if (ev_is_active (w))
1212	return;
1213
1214	ev_start (EV_A_ (W)w, ++checkcnt);
1215	array_needsize (checks, checkmax, checkcnt, );
1216	checks [checkcnt - 1] = w;
1217	}
1218
1219	void
1220	ev_check_stop (EV_P_ struct ev_check *w)
1221	{
1222	ev_clear_pending (EV_A_ (W)w);
1223	if (ev_is_active (w))
1224	return;
1225
1226	checks [w->active - 1] = checks [--checkcnt];
1227	ev_stop (EV_A_ (W)w);
1228	}
1229		1738
1230	#ifndef SA_RESTART	1739	#ifndef SA_RESTART
1231	# define SA_RESTART 0	1740	# define SA_RESTART 0
1232	#endif	1741	#endif
1233		1742
1234	void	1743	void noinline
1235	ev_signal_start (EV_P_ struct ev_signal *w)	1744	ev_signal_start (EV_P_ ev_signal *w)
1236	{	1745	{
1237	#if EV_MULTIPLICITY	1746	#if EV_MULTIPLICITY
1238	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1747	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1239	#endif	1748	#endif
1240	if (ev_is_active (w))	1749	if (expect_false (ev_is_active (w)))
1241	return;	1750	return;
1242		1751
1243	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1752	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1244		1753
1245	ev_start (EV_A_ (W)w, 1);	1754	ev_start (EV_A_ (W)w, 1);
1246	array_needsize (signals, signalmax, w->signum, signals_init);	1755	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1247	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1756	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1248		1757
1249	if (!w->next)	1758	if (!((WL)w)->next)
1250	{	1759	{
		1760	#if _WIN32
		1761	signal (w->signum, sighandler);
		1762	#else
1251	struct sigaction sa;	1763	struct sigaction sa;
1252	sa.sa_handler = sighandler;	1764	sa.sa_handler = sighandler;
1253	sigfillset (&sa.sa_mask);	1765	sigfillset (&sa.sa_mask);
1254	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1766	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1255	sigaction (w->signum, &sa, 0);	1767	sigaction (w->signum, &sa, 0);
		1768	#endif
1256	}	1769	}
1257	}	1770	}
1258		1771
1259	void	1772	void noinline
1260	ev_signal_stop (EV_P_ struct ev_signal *w)	1773	ev_signal_stop (EV_P_ ev_signal *w)
1261	{	1774	{
1262	ev_clear_pending (EV_A_ (W)w);	1775	clear_pending (EV_A_ (W)w);
1263	if (!ev_is_active (w))	1776	if (expect_false (!ev_is_active (w)))
1264	return;	1777	return;
1265		1778
1266	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1779	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1267	ev_stop (EV_A_ (W)w);	1780	ev_stop (EV_A_ (W)w);
1268		1781
1269	if (!signals [w->signum - 1].head)	1782	if (!signals [w->signum - 1].head)
1270	signal (w->signum, SIG_DFL);	1783	signal (w->signum, SIG_DFL);
1271	}	1784	}
1272		1785
1273	void	1786	void
1274	ev_child_start (EV_P_ struct ev_child *w)	1787	ev_child_start (EV_P_ ev_child *w)
1275	{	1788	{
1276	#if EV_MULTIPLICITY	1789	#if EV_MULTIPLICITY
1277	assert (("child watchers are only supported in the default loop", loop == default_loop));	1790	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1278	#endif	1791	#endif
1279	if (ev_is_active (w))	1792	if (expect_false (ev_is_active (w)))
1280	return;	1793	return;
1281		1794
1282	ev_start (EV_A_ (W)w, 1);	1795	ev_start (EV_A_ (W)w, 1);
1283	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1796	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1284	}	1797	}
1285		1798
1286	void	1799	void
1287	ev_child_stop (EV_P_ struct ev_child *w)	1800	ev_child_stop (EV_P_ ev_child *w)
1288	{	1801	{
1289	ev_clear_pending (EV_A_ (W)w);	1802	clear_pending (EV_A_ (W)w);
1290	if (ev_is_active (w))	1803	if (expect_false (!ev_is_active (w)))
1291	return;	1804	return;
1292		1805
1293	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1806	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1294	ev_stop (EV_A_ (W)w);	1807	ev_stop (EV_A_ (W)w);
1295	}	1808	}
1296		1809
		1810	#if EV_STAT_ENABLE
		1811
		1812	# ifdef _WIN32
		1813	# undef lstat
		1814	# define lstat(a,b) _stati64 (a,b)
		1815	# endif
		1816
		1817	#define DEF_STAT_INTERVAL 5.0074891
		1818	#define MIN_STAT_INTERVAL 0.1074891
		1819
		1820	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1821
		1822	#if EV_USE_INOTIFY
		1823	# define EV_INOTIFY_BUFSIZE 8192
		1824
		1825	static void noinline
		1826	infy_add (EV_P_ ev_stat *w)
		1827	{
		1828	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
		1829
		1830	if (w->wd < 0)
		1831	{
		1832	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1833
		1834	/* monitor some parent directory for speedup hints */
		1835	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1836	{
		1837	char path [4096];
		1838	strcpy (path, w->path);
		1839
		1840	do
		1841	{
		1842	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1843	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1844
		1845	char *pend = strrchr (path, '/');
		1846
		1847	if (!pend)
		1848	break; /* whoops, no '/', complain to your admin */
		1849
		1850	*pend = 0;
		1851	w->wd = inotify_add_watch (fs_fd, path, mask);
		1852	}
		1853	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1854	}
		1855	}
		1856	else
		1857	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1858
		1859	if (w->wd >= 0)
		1860	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1861	}
		1862
		1863	static void noinline
		1864	infy_del (EV_P_ ev_stat *w)
		1865	{
		1866	int slot;
		1867	int wd = w->wd;
		1868
		1869	if (wd < 0)
		1870	return;
		1871
		1872	w->wd = -2;
		1873	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1874	wlist_del (&fs_hash [slot].head, (WL)w);
		1875
		1876	/* remove this watcher, if others are watching it, they will rearm */
		1877	inotify_rm_watch (fs_fd, wd);
		1878	}
		1879
		1880	static void noinline
		1881	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1882	{
		1883	if (slot < 0)
		1884	/* overflow, need to check for all hahs slots */
		1885	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1886	infy_wd (EV_A_ slot, wd, ev);
		1887	else
		1888	{
		1889	WL w_;
		1890
		1891	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1892	{
		1893	ev_stat *w = (ev_stat *)w_;
		1894	w_ = w_->next; /* lets us remove this watcher and all before it */
		1895
		1896	if (w->wd == wd || wd == -1)
		1897	{
		1898	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1899	{
		1900	w->wd = -1;
		1901	infy_add (EV_A_ w); /* re-add, no matter what */
		1902	}
		1903
		1904	stat_timer_cb (EV_A_ &w->timer, 0);
		1905	}
		1906	}
		1907	}
		1908	}
		1909
		1910	static void
		1911	infy_cb (EV_P_ ev_io *w, int revents)
		1912	{
		1913	char buf [EV_INOTIFY_BUFSIZE];
		1914	struct inotify_event *ev = (struct inotify_event *)buf;
		1915	int ofs;
		1916	int len = read (fs_fd, buf, sizeof (buf));
		1917
		1918	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1919	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1920	}
		1921
		1922	void inline_size
		1923	infy_init (EV_P)
		1924	{
		1925	if (fs_fd != -2)
		1926	return;
		1927
		1928	fs_fd = inotify_init ();
		1929
		1930	if (fs_fd >= 0)
		1931	{
		1932	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1933	ev_set_priority (&fs_w, EV_MAXPRI);
		1934	ev_io_start (EV_A_ &fs_w);
		1935	}
		1936	}
		1937
		1938	void inline_size
		1939	infy_fork (EV_P)
		1940	{
		1941	int slot;
		1942
		1943	if (fs_fd < 0)
		1944	return;
		1945
		1946	close (fs_fd);
		1947	fs_fd = inotify_init ();
		1948
		1949	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1950	{
		1951	WL w_ = fs_hash [slot].head;
		1952	fs_hash [slot].head = 0;
		1953
		1954	while (w_)
		1955	{
		1956	ev_stat *w = (ev_stat *)w_;
		1957	w_ = w_->next; /* lets us add this watcher */
		1958
		1959	w->wd = -1;
		1960
		1961	if (fs_fd >= 0)
		1962	infy_add (EV_A_ w); /* re-add, no matter what */
		1963	else
		1964	ev_timer_start (EV_A_ &w->timer);
		1965	}
		1966
		1967	}
		1968	}
		1969
		1970	#endif
		1971
		1972	void
		1973	ev_stat_stat (EV_P_ ev_stat *w)
		1974	{
		1975	if (lstat (w->path, &w->attr) < 0)
		1976	w->attr.st_nlink = 0;
		1977	else if (!w->attr.st_nlink)
		1978	w->attr.st_nlink = 1;
		1979	}
		1980
		1981	static void noinline
		1982	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1983	{
		1984	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1985
		1986	/* we copy this here each the time so that */
		1987	/* prev has the old value when the callback gets invoked */
		1988	w->prev = w->attr;
		1989	ev_stat_stat (EV_A_ w);
		1990
		1991	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1992	if (
		1993	w->prev.st_dev != w->attr.st_dev
		1994	|| w->prev.st_ino != w->attr.st_ino
		1995	|| w->prev.st_mode != w->attr.st_mode
		1996	|| w->prev.st_nlink != w->attr.st_nlink
		1997	|| w->prev.st_uid != w->attr.st_uid
		1998	|| w->prev.st_gid != w->attr.st_gid
		1999	|| w->prev.st_rdev != w->attr.st_rdev
		2000	|| w->prev.st_size != w->attr.st_size
		2001	|| w->prev.st_atime != w->attr.st_atime
		2002	|| w->prev.st_mtime != w->attr.st_mtime
		2003	|| w->prev.st_ctime != w->attr.st_ctime
		2004	) {
		2005	#if EV_USE_INOTIFY
		2006	infy_del (EV_A_ w);
		2007	infy_add (EV_A_ w);
		2008	ev_stat_stat (EV_A_ w); /* avoid race... */
		2009	#endif
		2010
		2011	ev_feed_event (EV_A_ w, EV_STAT);
		2012	}
		2013	}
		2014
		2015	void
		2016	ev_stat_start (EV_P_ ev_stat *w)
		2017	{
		2018	if (expect_false (ev_is_active (w)))
		2019	return;
		2020
		2021	/* since we use memcmp, we need to clear any padding data etc. */
		2022	memset (&w->prev, 0, sizeof (ev_statdata));
		2023	memset (&w->attr, 0, sizeof (ev_statdata));
		2024
		2025	ev_stat_stat (EV_A_ w);
		2026
		2027	if (w->interval < MIN_STAT_INTERVAL)
		2028	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2029
		2030	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2031	ev_set_priority (&w->timer, ev_priority (w));
		2032
		2033	#if EV_USE_INOTIFY
		2034	infy_init (EV_A);
		2035
		2036	if (fs_fd >= 0)
		2037	infy_add (EV_A_ w);
		2038	else
		2039	#endif
		2040	ev_timer_start (EV_A_ &w->timer);
		2041
		2042	ev_start (EV_A_ (W)w, 1);
		2043	}
		2044
		2045	void
		2046	ev_stat_stop (EV_P_ ev_stat *w)
		2047	{
		2048	clear_pending (EV_A_ (W)w);
		2049	if (expect_false (!ev_is_active (w)))
		2050	return;
		2051
		2052	#if EV_USE_INOTIFY
		2053	infy_del (EV_A_ w);
		2054	#endif
		2055	ev_timer_stop (EV_A_ &w->timer);
		2056
		2057	ev_stop (EV_A_ (W)w);
		2058	}
		2059	#endif
		2060
		2061	#if EV_IDLE_ENABLE
		2062	void
		2063	ev_idle_start (EV_P_ ev_idle *w)
		2064	{
		2065	if (expect_false (ev_is_active (w)))
		2066	return;
		2067
		2068	pri_adjust (EV_A_ (W)w);
		2069
		2070	{
		2071	int active = ++idlecnt [ABSPRI (w)];
		2072
		2073	++idleall;
		2074	ev_start (EV_A_ (W)w, active);
		2075
		2076	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2077	idles [ABSPRI (w)][active - 1] = w;
		2078	}
		2079	}
		2080
		2081	void
		2082	ev_idle_stop (EV_P_ ev_idle *w)
		2083	{
		2084	clear_pending (EV_A_ (W)w);
		2085	if (expect_false (!ev_is_active (w)))
		2086	return;
		2087
		2088	{
		2089	int active = ((W)w)->active;
		2090
		2091	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2092	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2093
		2094	ev_stop (EV_A_ (W)w);
		2095	--idleall;
		2096	}
		2097	}
		2098	#endif
		2099
		2100	void
		2101	ev_prepare_start (EV_P_ ev_prepare *w)
		2102	{
		2103	if (expect_false (ev_is_active (w)))
		2104	return;
		2105
		2106	ev_start (EV_A_ (W)w, ++preparecnt);
		2107	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2108	prepares [preparecnt - 1] = w;
		2109	}
		2110
		2111	void
		2112	ev_prepare_stop (EV_P_ ev_prepare *w)
		2113	{
		2114	clear_pending (EV_A_ (W)w);
		2115	if (expect_false (!ev_is_active (w)))
		2116	return;
		2117
		2118	{
		2119	int active = ((W)w)->active;
		2120	prepares [active - 1] = prepares [--preparecnt];
		2121	((W)prepares [active - 1])->active = active;
		2122	}
		2123
		2124	ev_stop (EV_A_ (W)w);
		2125	}
		2126
		2127	void
		2128	ev_check_start (EV_P_ ev_check *w)
		2129	{
		2130	if (expect_false (ev_is_active (w)))
		2131	return;
		2132
		2133	ev_start (EV_A_ (W)w, ++checkcnt);
		2134	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2135	checks [checkcnt - 1] = w;
		2136	}
		2137
		2138	void
		2139	ev_check_stop (EV_P_ ev_check *w)
		2140	{
		2141	clear_pending (EV_A_ (W)w);
		2142	if (expect_false (!ev_is_active (w)))
		2143	return;
		2144
		2145	{
		2146	int active = ((W)w)->active;
		2147	checks [active - 1] = checks [--checkcnt];
		2148	((W)checks [active - 1])->active = active;
		2149	}
		2150
		2151	ev_stop (EV_A_ (W)w);
		2152	}
		2153
		2154	#if EV_EMBED_ENABLE
		2155	void noinline
		2156	ev_embed_sweep (EV_P_ ev_embed *w)
		2157	{
		2158	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2159	}
		2160
		2161	static void
		2162	embed_cb (EV_P_ ev_io *io, int revents)
		2163	{
		2164	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2165
		2166	if (ev_cb (w))
		2167	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2168	else
		2169	ev_embed_sweep (loop, w);
		2170	}
		2171
		2172	void
		2173	ev_embed_start (EV_P_ ev_embed *w)
		2174	{
		2175	if (expect_false (ev_is_active (w)))
		2176	return;
		2177
		2178	{
		2179	struct ev_loop *loop = w->loop;
		2180	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2181	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2182	}
		2183
		2184	ev_set_priority (&w->io, ev_priority (w));
		2185	ev_io_start (EV_A_ &w->io);
		2186
		2187	ev_start (EV_A_ (W)w, 1);
		2188	}
		2189
		2190	void
		2191	ev_embed_stop (EV_P_ ev_embed *w)
		2192	{
		2193	clear_pending (EV_A_ (W)w);
		2194	if (expect_false (!ev_is_active (w)))
		2195	return;
		2196
		2197	ev_io_stop (EV_A_ &w->io);
		2198
		2199	ev_stop (EV_A_ (W)w);
		2200	}
		2201	#endif
		2202
		2203	#if EV_FORK_ENABLE
		2204	void
		2205	ev_fork_start (EV_P_ ev_fork *w)
		2206	{
		2207	if (expect_false (ev_is_active (w)))
		2208	return;
		2209
		2210	ev_start (EV_A_ (W)w, ++forkcnt);
		2211	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2212	forks [forkcnt - 1] = w;
		2213	}
		2214
		2215	void
		2216	ev_fork_stop (EV_P_ ev_fork *w)
		2217	{
		2218	clear_pending (EV_A_ (W)w);
		2219	if (expect_false (!ev_is_active (w)))
		2220	return;
		2221
		2222	{
		2223	int active = ((W)w)->active;
		2224	forks [active - 1] = forks [--forkcnt];
		2225	((W)forks [active - 1])->active = active;
		2226	}
		2227
		2228	ev_stop (EV_A_ (W)w);
		2229	}
		2230	#endif
		2231
1297	/*****************************************************************************/	2232	/*****************************************************************************/
1298		2233
1299	struct ev_once	2234	struct ev_once
1300	{	2235	{
1301	struct ev_io io;	2236	ev_io io;
1302	struct ev_timer to;	2237	ev_timer to;
1303	void (*cb)(int revents, void *arg);	2238	void (*cb)(int revents, void *arg);
1304	void *arg;	2239	void *arg;
1305	};	2240	};
1306		2241
1307	static void	2242	static void
…		…
1310	void (*cb)(int revents, void *arg) = once->cb;	2245	void (*cb)(int revents, void *arg) = once->cb;
1311	void *arg = once->arg;	2246	void *arg = once->arg;
1312		2247
1313	ev_io_stop (EV_A_ &once->io);	2248	ev_io_stop (EV_A_ &once->io);
1314	ev_timer_stop (EV_A_ &once->to);	2249	ev_timer_stop (EV_A_ &once->to);
1315	free (once);	2250	ev_free (once);
1316		2251
1317	cb (revents, arg);	2252	cb (revents, arg);
1318	}	2253	}
1319		2254
1320	static void	2255	static void
1321	once_cb_io (EV_P_ struct ev_io *w, int revents)	2256	once_cb_io (EV_P_ ev_io *w, int revents)
1322	{	2257	{
1323	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2258	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1324	}	2259	}
1325		2260
1326	static void	2261	static void
1327	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2262	once_cb_to (EV_P_ ev_timer *w, int revents)
1328	{	2263	{
1329	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2264	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1330	}	2265	}
1331		2266
1332	void	2267	void
1333	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2268	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1334	{	2269	{
1335	struct ev_once *once = malloc (sizeof (struct ev_once));	2270	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1336		2271
1337	if (!once)	2272	if (expect_false (!once))
		2273	{
1338	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2274	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1339	else	2275	return;
1340	{	2276	}
		2277
1341	once->cb = cb;	2278	once->cb = cb;
1342	once->arg = arg;	2279	once->arg = arg;
1343		2280
1344	ev_watcher_init (&once->io, once_cb_io);	2281	ev_init (&once->io, once_cb_io);
1345	if (fd >= 0)	2282	if (fd >= 0)
1346	{	2283	{
1347	ev_io_set (&once->io, fd, events);	2284	ev_io_set (&once->io, fd, events);
1348	ev_io_start (EV_A_ &once->io);	2285	ev_io_start (EV_A_ &once->io);
1349	}	2286	}
1350		2287
1351	ev_watcher_init (&once->to, once_cb_to);	2288	ev_init (&once->to, once_cb_to);
1352	if (timeout >= 0.)	2289	if (timeout >= 0.)
1353	{	2290	{
1354	ev_timer_set (&once->to, timeout, 0.);	2291	ev_timer_set (&once->to, timeout, 0.);
1355	ev_timer_start (EV_A_ &once->to);	2292	ev_timer_start (EV_A_ &once->to);
1356	}
1357	}	2293	}
1358	}	2294	}
1359		2295
		2296	#ifdef __cplusplus
		2297	}
		2298	#endif
		2299

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