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Comparing libev/ev.c (file contents):
Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC vs.
Revision 1.172 by root, Sun Dec 9 02:27:44 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_USEV_POLL	155	#ifndef EV_USE_POLL
64	# define EV_USEV_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	#ifdef 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
		612	/* usually called after fork if backend needs to re-arm all fds from scratch */
		613	static void noinline
		614	fd_rearm_all (EV_P)
		615	{
		616	int fd;
		617
		618	for (fd = 0; fd < anfdmax; ++fd)
		619	if (anfds [fd].events)
		620	{
		621	anfds [fd].events = 0;
		622	fd_change (EV_A_ fd);
		623	}
		624	}
		625
343	/*****************************************************************************/	626	/*****************************************************************************/
344		627
345	static void	628	void inline_speed
346	upheap (WT *heap, int k)	629	upheap (WT *heap, int k)
347	{	630	{
348	WT w = heap [k];	631	WT w = heap [k];
349		632
350	while (k && heap [k >> 1]->at > w->at)	633	while (k && heap [k >> 1]->at > w->at)
351	{	634	{
352	heap [k] = heap [k >> 1];	635	heap [k] = heap [k >> 1];
353	heap [k]->active = k + 1;	636	((W)heap [k])->active = k + 1;
354	k >>= 1;	637	k >>= 1;
355	}	638	}
356		639
357	heap [k] = w;	640	heap [k] = w;
358	heap [k]->active = k + 1;	641	((W)heap [k])->active = k + 1;
359		642
360	}	643	}
361		644
362	static void	645	void inline_speed
363	downheap (WT *heap, int N, int k)	646	downheap (WT *heap, int N, int k)
364	{	647	{
365	WT w = heap [k];	648	WT w = heap [k];
366		649
367	while (k < (N >> 1))	650	while (k < (N >> 1))
…		…
373		656
374	if (w->at <= heap [j]->at)	657	if (w->at <= heap [j]->at)
375	break;	658	break;
376		659
377	heap [k] = heap [j];	660	heap [k] = heap [j];
378	heap [k]->active = k + 1;	661	((W)heap [k])->active = k + 1;
379	k = j;	662	k = j;
380	}	663	}
381		664
382	heap [k] = w;	665	heap [k] = w;
383	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);
384	}	674	}
385		675
386	/*****************************************************************************/	676	/*****************************************************************************/
387		677
388	typedef struct	678	typedef struct
389	{	679	{
390	struct ev_watcher_list *head;	680	WL head;
391	sig_atomic_t volatile gotsig;	681	sig_atomic_t volatile gotsig;
392	} ANSIG;	682	} ANSIG;
393		683
394	static ANSIG *signals;	684	static ANSIG *signals;
395	static int signalmax;	685	static int signalmax;
396		686
397	static int sigpipe [2];	687	static int sigpipe [2];
398	static sig_atomic_t volatile gotsig;	688	static sig_atomic_t volatile gotsig;
		689	static ev_io sigev;
399		690
400	static void	691	void inline_size
401	signals_init (ANSIG *base, int count)	692	signals_init (ANSIG *base, int count)
402	{	693	{
403	while (count--)	694	while (count--)
404	{	695	{
405	base->head = 0;	696	base->head = 0;
…		…
410	}	701	}
411		702
412	static void	703	static void
413	sighandler (int signum)	704	sighandler (int signum)
414	{	705	{
		706	#if _WIN32
		707	signal (signum, sighandler);
		708	#endif
		709
415	signals [signum - 1].gotsig = 1;	710	signals [signum - 1].gotsig = 1;
416		711
417	if (!gotsig)	712	if (!gotsig)
418	{	713	{
419	int old_errno = errno;	714	int old_errno = errno;
…		…
421	write (sigpipe [1], &signum, 1);	716	write (sigpipe [1], &signum, 1);
422	errno = old_errno;	717	errno = old_errno;
423	}	718	}
424	}	719	}
425		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
426	static void	741	static void
427	sigcb (EV_P_ struct ev_io *iow, int revents)	742	sigcb (EV_P_ ev_io *iow, int revents)
428	{	743	{
429	struct ev_watcher_list *w;
430	int signum;	744	int signum;
431		745
432	read (sigpipe [0], &revents, 1);	746	read (sigpipe [0], &revents, 1);
433	gotsig = 0;	747	gotsig = 0;
434		748
435	for (signum = signalmax; signum--; )	749	for (signum = signalmax; signum--; )
436	if (signals [signum].gotsig)	750	if (signals [signum].gotsig)
437	{	751	ev_feed_signal_event (EV_A_ signum + 1);
438	signals [signum].gotsig = 0;
439
440	for (w = signals [signum].head; w; w = w->next)
441	event (EV_A_ (W)w, EV_SIGNAL);
442	}
443	}	752	}
444		753
445	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
446	siginit (EV_P)	767	siginit (EV_P)
447	{	768	{
448	#ifndef WIN32	769	fd_intern (sigpipe [0]);
449	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	770	fd_intern (sigpipe [1]);
450	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
451
452	/* rather than sort out wether we really need nb, set it */
453	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
454	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
455	#endif
456		771
457	ev_io_set (&sigev, sigpipe [0], EV_READ);	772	ev_io_set (&sigev, sigpipe [0], EV_READ);
458	ev_io_start (EV_A_ &sigev);	773	ev_io_start (EV_A_ &sigev);
459	ev_unref (EV_A); /* child watcher should not keep loop alive */	774	ev_unref (EV_A); /* child watcher should not keep loop alive */
460	}	775	}
461		776
462	/*****************************************************************************/	777	/*****************************************************************************/
463		778
		779	static ev_child *childs [EV_PID_HASHSIZE];
		780
464	#ifndef WIN32	781	#ifndef _WIN32
		782
		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	}
465		799
466	#ifndef WCONTINUED	800	#ifndef WCONTINUED
467	# define WCONTINUED 0	801	# define WCONTINUED 0
468	#endif	802	#endif
469		803
470	static void	804	static void
471	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
472	{
473	struct ev_child *w;
474
475	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
476	if (w->pid == pid || !w->pid)
477	{
478	w->priority = sw->priority; /* need to do it *now* */
479	w->rpid = pid;
480	w->rstatus = status;
481	event (EV_A_ (W)w, EV_CHILD);
482	}
483	}
484
485	static void
486	childcb (EV_P_ struct ev_signal *sw, int revents)	805	childcb (EV_P_ ev_signal *sw, int revents)
487	{	806	{
488	int pid, status;	807	int pid, status;
489		808
		809	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
490	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	810	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
491	{	811	if (!WCONTINUED
		812	|| errno != EINVAL
		813	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		814	return;
		815
492	/* 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 */
493	event (EV_A_ (W)sw, EV_SIGNAL);	818	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
494		819
495	child_reap (EV_A_ sw, pid, pid, status);	820	child_reap (EV_A_ sw, pid, pid, status);
		821	if (EV_PID_HASHSIZE > 1)
496	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 */
497	}
498	}	823	}
499		824
500	#endif	825	#endif
501		826
502	/*****************************************************************************/	827	/*****************************************************************************/
503		828
		829	#if EV_USE_PORT
		830	# include "ev_port.c"
		831	#endif
504	#if EV_USE_KQUEUE	832	#if EV_USE_KQUEUE
505	# include "ev_kqueue.c"	833	# include "ev_kqueue.c"
506	#endif	834	#endif
507	#if EV_USE_EPOLL	835	#if EV_USE_EPOLL
508	# include "ev_epoll.c"	836	# include "ev_epoll.c"
509	#endif	837	#endif
510	#if EV_USEV_POLL	838	#if EV_USE_POLL
511	# include "ev_poll.c"	839	# include "ev_poll.c"
512	#endif	840	#endif
513	#if EV_USE_SELECT	841	#if EV_USE_SELECT
514	# include "ev_select.c"	842	# include "ev_select.c"
515	#endif	843	#endif
…		…
525	{	853	{
526	return EV_VERSION_MINOR;	854	return EV_VERSION_MINOR;
527	}	855	}
528		856
529	/* 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 */
530	static int	858	int inline_size
531	enable_secure (void)	859	enable_secure (void)
532	{	860	{
533	#ifdef WIN32	861	#ifdef _WIN32
534	return 0;	862	return 0;
535	#else	863	#else
536	return getuid () != geteuid ()	864	return getuid () != geteuid ()
537	|| getgid () != getegid ();	865	|| getgid () != getegid ();
538	#endif	866	#endif
539	}	867	}
540		868
541	int	869	unsigned int
542	ev_method (EV_P)	870	ev_supported_backends (void)
543	{	871	{
544	return method;	872	unsigned int flags = 0;
545	}
546		873
547	static void	874	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
548	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)
549	{	885	{
550	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)
551	{	925	{
552	#if EV_USE_MONOTONIC	926	#if EV_USE_MONOTONIC
553	{	927	{
554	struct timespec ts;	928	struct timespec ts;
555	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	929	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
556	have_monotonic = 1;	930	have_monotonic = 1;
557	}	931	}
558	#endif	932	#endif
559		933
560	rt_now = ev_time ();	934	ev_rt_now = ev_time ();
561	mn_now = get_clock ();	935	mn_now = get_clock ();
562	now_floor = mn_now;	936	now_floor = mn_now;
563	rtmn_diff = rt_now - mn_now;	937	rtmn_diff = ev_rt_now - mn_now;
564		938
565	if (pipe (sigpipe))	939	/* pid check not overridable via env */
566	return 0;	940	#ifndef _WIN32
		941	if (flags & EVFLAG_FORKCHECK)
		942	curpid = getpid ();
		943	#endif
567		944
568	if (methods == EVMETHOD_AUTO)	945	if (!(flags & EVFLAG_NOENV)
569	if (!enable_secure () && getenv ("LIBmethodS"))	946	&& !enable_secure ()
570	methods = atoi (getenv ("LIBmethodS"));	947	&& getenv ("LIBEV_FLAGS"))
571	else	948	flags = atoi (getenv ("LIBEV_FLAGS"));
572	methods = EVMETHOD_ANY;
573		949
574	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
575	#if EV_USE_KQUEUE	962	#if EV_USE_KQUEUE
576	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	963	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
577	#endif	964	#endif
578	#if EV_USE_EPOLL	965	#if EV_USE_EPOLL
579	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	966	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
580	#endif	967	#endif
581	#if EV_USEV_POLL	968	#if EV_USE_POLL
582	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	969	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
583	#endif	970	#endif
584	#if EV_USE_SELECT	971	#if EV_USE_SELECT
585	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	972	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
586	#endif	973	#endif
587		974
588	if (method)	975	ev_init (&sigev, sigcb);
		976	ev_set_priority (&sigev, EV_MAXPRI);
		977	}
		978	}
		979
		980	static void noinline
		981	loop_destroy (EV_P)
		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
		996	#if EV_USE_KQUEUE
		997	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		998	#endif
		999	#if EV_USE_EPOLL
		1000	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		1001	#endif
		1002	#if EV_USE_POLL
		1003	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		1004	#endif
		1005	#if EV_USE_SELECT
		1006	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		1007	#endif
		1008
		1009	for (i = NUMPRI; i--; )
		1010	{
		1011	array_free (pending, [i]);
		1012	#if EV_IDLE_ENABLE
		1013	array_free (idle, [i]);
		1014	#endif
		1015	}
		1016
		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
		1032	loop_fork (EV_P)
		1033	{
		1034	#if EV_USE_PORT
		1035	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1036	#endif
		1037	#if EV_USE_KQUEUE
		1038	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1039	#endif
		1040	#if EV_USE_EPOLL
		1041	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1042	#endif
		1043	#if EV_USE_INOTIFY
		1044	infy_fork (EV_A);
		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;
		1063	}
		1064
		1065	#if EV_MULTIPLICITY
		1066	struct ev_loop *
		1067	ev_loop_new (unsigned int flags)
		1068	{
		1069	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		1070
		1071	memset (loop, 0, sizeof (struct ev_loop));
		1072
		1073	loop_init (EV_A_ flags);
		1074
		1075	if (ev_backend (EV_A))
		1076	return loop;
		1077
		1078	return 0;
		1079	}
		1080
		1081	void
		1082	ev_loop_destroy (EV_P)
		1083	{
		1084	loop_destroy (EV_A);
		1085	ev_free (loop);
		1086	}
		1087
		1088	void
		1089	ev_loop_fork (EV_P)
		1090	{
		1091	postfork = 1;
		1092	}
		1093
		1094	#endif
		1095
		1096	#if EV_MULTIPLICITY
		1097	struct ev_loop *
		1098	ev_default_loop_init (unsigned int flags)
		1099	#else
		1100	int
		1101	ev_default_loop (unsigned int flags)
		1102	#endif
		1103	{
		1104	if (sigpipe [0] == sigpipe [1])
		1105	if (pipe (sigpipe))
		1106	return 0;
		1107
		1108	if (!ev_default_loop_ptr)
		1109	{
		1110	#if EV_MULTIPLICITY
		1111	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		1112	#else
		1113	ev_default_loop_ptr = 1;
		1114	#endif
		1115
		1116	loop_init (EV_A_ flags);
		1117
		1118	if (ev_backend (EV_A))
589	{	1119	{
590	ev_watcher_init (&sigev, sigcb);
591	ev_set_priority (&sigev, EV_MAXPRI);
592	siginit (EV_A);	1120	siginit (EV_A);
593		1121
594	#ifndef WIN32	1122	#ifndef _WIN32
595	ev_signal_init (&childev, childcb, SIGCHLD);	1123	ev_signal_init (&childev, childcb, SIGCHLD);
596	ev_set_priority (&childev, EV_MAXPRI);	1124	ev_set_priority (&childev, EV_MAXPRI);
597	ev_signal_start (EV_A_ &childev);	1125	ev_signal_start (EV_A_ &childev);
598	ev_unref (EV_A); /* child watcher should not keep loop alive */	1126	ev_unref (EV_A); /* child watcher should not keep loop alive */
599	#endif	1127	#endif
600	}	1128	}
		1129	else
		1130	ev_default_loop_ptr = 0;
601	}	1131	}
602		1132
603	return method;	1133	return ev_default_loop_ptr;
604	}	1134	}
605		1135
		1136	void
		1137	ev_default_destroy (void)
		1138	{
606	#ifdef EV_MULTIPLICITY	1139	#if EV_MULTIPLICITY
607		1140	struct ev_loop *loop = ev_default_loop_ptr;
608	struct ev_loop *
609	ev_loop_new (int methods)
610	{
611	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));
612
613	loop_init (EV_A_ methods);
614
615	return loop;
616	}
617
618	void
619	ev_loop_delete (EV_P)
620	{
621	/*TODO*/
622	free (loop);
623	}
624
625	#else
626
627	int
628	ev_init (int methods)
629	{
630	loop_init ();
631	}
632
633	#endif	1141	#endif
		1142
		1143	#ifndef _WIN32
		1144	ev_ref (EV_A); /* child watcher */
		1145	ev_signal_stop (EV_A_ &childev);
		1146	#endif
		1147
		1148	ev_ref (EV_A); /* signal watcher */
		1149	ev_io_stop (EV_A_ &sigev);
		1150
		1151	close (sigpipe [0]); sigpipe [0] = 0;
		1152	close (sigpipe [1]); sigpipe [1] = 0;
		1153
		1154	loop_destroy (EV_A);
		1155	}
		1156
		1157	void
		1158	ev_default_fork (void)
		1159	{
		1160	#if EV_MULTIPLICITY
		1161	struct ev_loop *loop = ev_default_loop_ptr;
		1162	#endif
		1163
		1164	if (backend)
		1165	postfork = 1;
		1166	}
634		1167
635	/*****************************************************************************/	1168	/*****************************************************************************/
636		1169
637	void	1170	void
638	ev_fork_prepare (void)	1171	ev_invoke (EV_P_ void *w, int revents)
639	{	1172	{
640	/* nop */	1173	EV_CB_INVOKE ((W)w, revents);
641	}	1174	}
642		1175
643	void	1176	void inline_speed
644	ev_fork_parent (void)
645	{
646	/* nop */
647	}
648
649	void
650	ev_fork_child (void)
651	{
652	/*TODO*/
653	#if !EV_MULTIPLICITY
654	#if EV_USE_EPOLL
655	if (method == EVMETHOD_EPOLL)
656	epoll_postfork_child (EV_A);
657	#endif
658
659	ev_io_stop (EV_A_ &sigev);
660	close (sigpipe [0]);
661	close (sigpipe [1]);
662	pipe (sigpipe);
663	siginit (EV_A);
664	#endif
665	}
666
667	/*****************************************************************************/
668
669	static void
670	call_pending (EV_P)	1177	call_pending (EV_P)
671	{	1178	{
672	int pri;	1179	int pri;
673		1180
674	for (pri = NUMPRI; pri--; )	1181	for (pri = NUMPRI; pri--; )
675	while (pendingcnt [pri])	1182	while (pendingcnt [pri])
676	{	1183	{
677	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1184	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
678		1185
679	if (p->w)	1186	if (expect_true (p->w))
680	{	1187	{
		1188	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1189
681	p->w->pending = 0;	1190	p->w->pending = 0;
682	p->w->cb (EV_A_ p->w, p->events);	1191	EV_CB_INVOKE (p->w, p->events);
683	}	1192	}
684	}	1193	}
685	}	1194	}
686		1195
687	static void	1196	void inline_size
688	timers_reify (EV_P)	1197	timers_reify (EV_P)
689	{	1198	{
690	while (timercnt && timers [0]->at <= mn_now)	1199	while (timercnt && ((WT)timers [0])->at <= mn_now)
691	{	1200	{
692	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)));*/
693		1204
694	/* first reschedule or stop timer */	1205	/* first reschedule or stop timer */
695	if (w->repeat)	1206	if (w->repeat)
696	{	1207	{
697	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
698	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
699	downheap ((WT *)timers, timercnt, 0);	1214	downheap ((WT *)timers, timercnt, 0);
700	}	1215	}
701	else	1216	else
702	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1217	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
703		1218
704	event (EV_A_ (W)w, EV_TIMEOUT);	1219	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
705	}	1220	}
706	}	1221	}
707		1222
708	static void	1223	#if EV_PERIODIC_ENABLE
		1224	void inline_size
709	periodics_reify (EV_P)	1225	periodics_reify (EV_P)
710	{	1226	{
711	while (periodiccnt && periodics [0]->at <= rt_now)	1227	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
712	{	1228	{
713	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)));*/
714		1232
715	/* first reschedule or stop timer */	1233	/* first reschedule or stop timer */
716	if (w->interval)	1234	if (w->reschedule_cb)
717	{	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	{
718	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;
719	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));
720	downheap ((WT *)periodics, periodiccnt, 0);	1244	downheap ((WT *)periodics, periodiccnt, 0);
721	}	1245	}
722	else	1246	else
723	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1247	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
724		1248
725	event (EV_A_ (W)w, EV_PERIODIC);	1249	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
726	}	1250	}
727	}	1251	}
728		1252
729	static void	1253	static void noinline
730	periodics_reschedule (EV_P)	1254	periodics_reschedule (EV_P)
731	{	1255	{
732	int i;	1256	int i;
733		1257
734	/* adjust periodics after time jump */	1258	/* adjust periodics after time jump */
735	for (i = 0; i < periodiccnt; ++i)	1259	for (i = 0; i < periodiccnt; ++i)
736	{	1260	{
737	struct ev_periodic *w = periodics [i];	1261	ev_periodic *w = periodics [i];
738		1262
		1263	if (w->reschedule_cb)
		1264	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
739	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--; )
740	{	1284	{
741	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1285	if (pendingcnt [pri])
		1286	break;
742		1287
743	if (fabs (diff) >= 1e-4)	1288	if (idlecnt [pri])
744	{	1289	{
745	ev_periodic_stop (EV_A_ w);	1290	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
746	ev_periodic_start (EV_A_ w);	1291	break;
747
748	i = 0; /* restart loop, inefficient, but time jumps should be rare */
749	}	1292	}
750	}	1293	}
751	}	1294	}
752	}	1295	}
		1296	#endif
753		1297
754	inline int	1298	int inline_size
755	time_update_monotonic (EV_P)	1299	time_update_monotonic (EV_P)
756	{	1300	{
757	mn_now = get_clock ();	1301	mn_now = get_clock ();
758		1302
759	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1303	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
760	{	1304	{
761	rt_now = rtmn_diff + mn_now;	1305	ev_rt_now = rtmn_diff + mn_now;
762	return 0;	1306	return 0;
763	}	1307	}
764	else	1308	else
765	{	1309	{
766	now_floor = mn_now;	1310	now_floor = mn_now;
767	rt_now = ev_time ();	1311	ev_rt_now = ev_time ();
768	return 1;	1312	return 1;
769	}	1313	}
770	}	1314	}
771		1315
772	static void	1316	void inline_size
773	time_update (EV_P)	1317	time_update (EV_P)
774	{	1318	{
775	int i;	1319	int i;
776		1320
777	#if EV_USE_MONOTONIC	1321	#if EV_USE_MONOTONIC
…		…
779	{	1323	{
780	if (time_update_monotonic (EV_A))	1324	if (time_update_monotonic (EV_A))
781	{	1325	{
782	ev_tstamp odiff = rtmn_diff;	1326	ev_tstamp odiff = rtmn_diff;
783		1327
784	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; )
785	{	1337	{
786	rtmn_diff = rt_now - mn_now;	1338	rtmn_diff = ev_rt_now - mn_now;
787		1339
788	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1340	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
789	return; /* all is well */	1341	return; /* all is well */
790		1342
791	rt_now = ev_time ();	1343	ev_rt_now = ev_time ();
792	mn_now = get_clock ();	1344	mn_now = get_clock ();
793	now_floor = mn_now;	1345	now_floor = mn_now;
794	}	1346	}
795		1347
		1348	# if EV_PERIODIC_ENABLE
796	periodics_reschedule (EV_A);	1349	periodics_reschedule (EV_A);
		1350	# endif
797	/* no timer adjustment, as the monotonic clock doesn't jump */	1351	/* no timer adjustment, as the monotonic clock doesn't jump */
798	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1352	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
799	}	1353	}
800	}	1354	}
801	else	1355	else
802	#endif	1356	#endif
803	{	1357	{
804	rt_now = ev_time ();	1358	ev_rt_now = ev_time ();
805		1359
806	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))
807	{	1361	{
		1362	#if EV_PERIODIC_ENABLE
808	periodics_reschedule (EV_A);	1363	periodics_reschedule (EV_A);
		1364	#endif
809		1365
810	/* 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 */
811	for (i = 0; i < timercnt; ++i)	1367	for (i = 0; i < timercnt; ++i)
812	timers [i]->at += rt_now - mn_now;	1368	((WT)timers [i])->at += ev_rt_now - mn_now;
813	}	1369	}
814		1370
815	mn_now = rt_now;	1371	mn_now = ev_rt_now;
816	}	1372	}
817	}	1373	}
818		1374
819	void	1375	void
820	ev_ref (EV_P)	1376	ev_ref (EV_P)
…		…
831	static int loop_done;	1387	static int loop_done;
832		1388
833	void	1389	void
834	ev_loop (EV_P_ int flags)	1390	ev_loop (EV_P_ int flags)
835	{	1391	{
836	double block;
837	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 */
838		1397
839	do	1398	do
840	{	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
841	/* queue check watchers (and execute them) */	1419	/* queue prepare watchers (and execute them) */
842	if (expect_false (preparecnt))	1420	if (expect_false (preparecnt))
843	{	1421	{
844	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1422	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
845	call_pending (EV_A);	1423	call_pending (EV_A);
846	}	1424	}
847		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
848	/* update fd-related kernel structures */	1433	/* update fd-related kernel structures */
849	fd_reify (EV_A);	1434	fd_reify (EV_A);
850		1435
851	/* calculate blocking time */	1436	/* calculate blocking time */
		1437	{
		1438	ev_tstamp block;
852		1439
853	/* we only need this for !monotonic clockor timers, but as we basically	1440	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
854	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 */
855	#if EV_USE_MONOTONIC	1445	#if EV_USE_MONOTONIC
856	if (expect_true (have_monotonic))	1446	if (expect_true (have_monotonic))
857	time_update_monotonic (EV_A);	1447	time_update_monotonic (EV_A);
858	else	1448	else
859	#endif	1449	#endif
860	{	1450	{
861	rt_now = ev_time ();	1451	ev_rt_now = ev_time ();
862	mn_now = rt_now;	1452	mn_now = ev_rt_now;
863	}	1453	}
864		1454
865	if (flags & EVLOOP_NONBLOCK || idlecnt)
866	block = 0.;
867	else
868	{
869	block = MAX_BLOCKTIME;	1455	block = MAX_BLOCKTIME;
870		1456
871	if (timercnt)	1457	if (timercnt)
872	{	1458	{
873	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1459	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
874	if (block > to) block = to;	1460	if (block > to) block = to;
875	}	1461	}
876		1462
		1463	#if EV_PERIODIC_ENABLE
877	if (periodiccnt)	1464	if (periodiccnt)
878	{	1465	{
879	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1466	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
880	if (block > to) block = to;	1467	if (block > to) block = to;
881	}	1468	}
		1469	#endif
882		1470
883	if (block < 0.) block = 0.;	1471	if (expect_false (block < 0.)) block = 0.;
884	}	1472	}
885		1473
		1474	++loop_count;
886	method_poll (EV_A_ block);	1475	backend_poll (EV_A_ block);
		1476	}
887		1477
888	/* update rt_now, do magic */	1478	/* update ev_rt_now, do magic */
889	time_update (EV_A);	1479	time_update (EV_A);
890		1480
891	/* queue pending timers and reschedule them */	1481	/* queue pending timers and reschedule them */
892	timers_reify (EV_A); /* relative timers called last */	1482	timers_reify (EV_A); /* relative timers called last */
		1483	#if EV_PERIODIC_ENABLE
893	periodics_reify (EV_A); /* absolute timers called first */	1484	periodics_reify (EV_A); /* absolute timers called first */
		1485	#endif
894		1486
		1487	#if EV_IDLE_ENABLE
895	/* queue idle watchers unless io or timers are pending */	1488	/* queue idle watchers unless other events are pending */
896	if (!pendingcnt)	1489	idle_reify (EV_A);
897	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1490	#endif
898		1491
899	/* queue check watchers, to be executed first */	1492	/* queue check watchers, to be executed first */
900	if (checkcnt)	1493	if (expect_false (checkcnt))
901	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1494	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
902		1495
903	call_pending (EV_A);	1496	call_pending (EV_A);
		1497
904	}	1498	}
905	while (activecnt && !loop_done);	1499	while (expect_true (activecnt && !loop_done));
906		1500
907	if (loop_done != 2)	1501	if (loop_done == EVUNLOOP_ONE)
908	loop_done = 0;	1502	loop_done = EVUNLOOP_CANCEL;
909	}	1503	}
910		1504
911	void	1505	void
912	ev_unloop (EV_P_ int how)	1506	ev_unloop (EV_P_ int how)
913	{	1507	{
914	loop_done = how;	1508	loop_done = how;
915	}	1509	}
916		1510
917	/*****************************************************************************/	1511	/*****************************************************************************/
918		1512
919	inline void	1513	void inline_size
920	wlist_add (WL *head, WL elem)	1514	wlist_add (WL *head, WL elem)
921	{	1515	{
922	elem->next = *head;	1516	elem->next = *head;
923	*head = elem;	1517	*head = elem;
924	}	1518	}
925		1519
926	inline void	1520	void inline_size
927	wlist_del (WL *head, WL elem)	1521	wlist_del (WL *head, WL elem)
928	{	1522	{
929	while (*head)	1523	while (*head)
930	{	1524	{
931	if (*head == elem)	1525	if (*head == elem)
…		…
936		1530
937	head = &(*head)->next;	1531	head = &(*head)->next;
938	}	1532	}
939	}	1533	}
940		1534
941	inline void	1535	void inline_speed
942	ev_clear_pending (EV_P_ W w)	1536	clear_pending (EV_P_ W w)
943	{	1537	{
944	if (w->pending)	1538	if (w->pending)
945	{	1539	{
946	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1540	pendings [ABSPRI (w)][w->pending - 1].w = 0;
947	w->pending = 0;	1541	w->pending = 0;
948	}	1542	}
949	}	1543	}
950		1544
951	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
952	ev_start (EV_P_ W w, int active)	1572	ev_start (EV_P_ W w, int active)
953	{	1573	{
954	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1574	pri_adjust (EV_A_ w);
955	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
956
957	w->active = active;	1575	w->active = active;
958	ev_ref (EV_A);	1576	ev_ref (EV_A);
959	}	1577	}
960		1578
961	inline void	1579	void inline_size
962	ev_stop (EV_P_ W w)	1580	ev_stop (EV_P_ W w)
963	{	1581	{
964	ev_unref (EV_A);	1582	ev_unref (EV_A);
965	w->active = 0;	1583	w->active = 0;
966	}	1584	}
967		1585
968	/*****************************************************************************/	1586	/*****************************************************************************/
969		1587
970	void	1588	void noinline
971	ev_io_start (EV_P_ struct ev_io *w)	1589	ev_io_start (EV_P_ ev_io *w)
972	{	1590	{
973	int fd = w->fd;	1591	int fd = w->fd;
974		1592
975	if (ev_is_active (w))	1593	if (expect_false (ev_is_active (w)))
976	return;	1594	return;
977		1595
978	assert (("ev_io_start called with negative fd", fd >= 0));	1596	assert (("ev_io_start called with negative fd", fd >= 0));
979		1597
980	ev_start (EV_A_ (W)w, 1);	1598	ev_start (EV_A_ (W)w, 1);
981	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1599	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
982	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1600	wlist_add ((WL *)&anfds[fd].head, (WL)w);
983		1601
984	fd_change (EV_A_ fd);	1602	fd_change (EV_A_ fd);
985	}	1603	}
986		1604
987	void	1605	void noinline
988	ev_io_stop (EV_P_ struct ev_io *w)	1606	ev_io_stop (EV_P_ ev_io *w)
989	{	1607	{
990	ev_clear_pending (EV_A_ (W)w);	1608	clear_pending (EV_A_ (W)w);
991	if (!ev_is_active (w))	1609	if (expect_false (!ev_is_active (w)))
992	return;	1610	return;
		1611
		1612	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
993		1613
994	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1614	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
995	ev_stop (EV_A_ (W)w);	1615	ev_stop (EV_A_ (W)w);
996		1616
997	fd_change (EV_A_ w->fd);	1617	fd_change (EV_A_ w->fd);
998	}	1618	}
999		1619
1000	void	1620	void noinline
1001	ev_timer_start (EV_P_ struct ev_timer *w)	1621	ev_timer_start (EV_P_ ev_timer *w)
1002	{	1622	{
1003	if (ev_is_active (w))	1623	if (expect_false (ev_is_active (w)))
1004	return;	1624	return;
1005		1625
1006	w->at += mn_now;	1626	((WT)w)->at += mn_now;
1007		1627
1008	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.));
1009		1629
1010	ev_start (EV_A_ (W)w, ++timercnt);	1630	ev_start (EV_A_ (W)w, ++timercnt);
1011	array_needsize (timers, timermax, timercnt, );	1631	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1012	timers [timercnt - 1] = w;	1632	timers [timercnt - 1] = w;
1013	upheap ((WT *)timers, timercnt - 1);	1633	upheap ((WT *)timers, timercnt - 1);
1014	}
1015		1634
1016	void	1635	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1636	}
		1637
		1638	void noinline
1017	ev_timer_stop (EV_P_ struct ev_timer *w)	1639	ev_timer_stop (EV_P_ ev_timer *w)
1018	{	1640	{
1019	ev_clear_pending (EV_A_ (W)w);	1641	clear_pending (EV_A_ (W)w);
1020	if (!ev_is_active (w))	1642	if (expect_false (!ev_is_active (w)))
1021	return;	1643	return;
1022		1644
1023	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))
1024	{	1651	{
1025	timers [w->active - 1] = timers [timercnt];	1652	timers [active] = timers [timercnt];
1026	downheap ((WT *)timers, timercnt, w->active - 1);	1653	adjustheap ((WT *)timers, timercnt, active);
1027	}	1654	}
		1655	}
1028		1656
1029	w->at = w->repeat;	1657	((WT)w)->at -= mn_now;
1030		1658
1031	ev_stop (EV_A_ (W)w);	1659	ev_stop (EV_A_ (W)w);
1032	}	1660	}
1033		1661
1034	void	1662	void noinline
1035	ev_timer_again (EV_P_ struct ev_timer *w)	1663	ev_timer_again (EV_P_ ev_timer *w)
1036	{	1664	{
1037	if (ev_is_active (w))	1665	if (ev_is_active (w))
1038	{	1666	{
1039	if (w->repeat)	1667	if (w->repeat)
1040	{	1668	{
1041	w->at = mn_now + w->repeat;	1669	((WT)w)->at = mn_now + w->repeat;
1042	downheap ((WT *)timers, timercnt, w->active - 1);	1670	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1043	}	1671	}
1044	else	1672	else
1045	ev_timer_stop (EV_A_ w);	1673	ev_timer_stop (EV_A_ w);
1046	}	1674	}
1047	else if (w->repeat)	1675	else if (w->repeat)
		1676	{
		1677	w->at = w->repeat;
1048	ev_timer_start (EV_A_ w);	1678	ev_timer_start (EV_A_ w);
		1679	}
1049	}	1680	}
1050		1681
1051	void	1682	#if EV_PERIODIC_ENABLE
		1683	void noinline
1052	ev_periodic_start (EV_P_ struct ev_periodic *w)	1684	ev_periodic_start (EV_P_ ev_periodic *w)
1053	{	1685	{
1054	if (ev_is_active (w))	1686	if (expect_false (ev_is_active (w)))
1055	return;	1687	return;
1056		1688
		1689	if (w->reschedule_cb)
		1690	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1691	else if (w->interval)
		1692	{
1057	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.));
1058
1059	/* 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 */
1060	if (w->interval)
1061	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1695	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1696	}
1062		1697
1063	ev_start (EV_A_ (W)w, ++periodiccnt);	1698	ev_start (EV_A_ (W)w, ++periodiccnt);
1064	array_needsize (periodics, periodicmax, periodiccnt, );	1699	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1065	periodics [periodiccnt - 1] = w;	1700	periodics [periodiccnt - 1] = w;
1066	upheap ((WT *)periodics, periodiccnt - 1);	1701	upheap ((WT *)periodics, periodiccnt - 1);
1067	}
1068		1702
1069	void	1703	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1704	}
		1705
		1706	void noinline
1070	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1707	ev_periodic_stop (EV_P_ ev_periodic *w)
1071	{	1708	{
1072	ev_clear_pending (EV_A_ (W)w);	1709	clear_pending (EV_A_ (W)w);
1073	if (!ev_is_active (w))	1710	if (expect_false (!ev_is_active (w)))
1074	return;	1711	return;
1075		1712
1076	if (w->active < periodiccnt--)	1713	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1714
		1715	{
		1716	int active = ((W)w)->active;
		1717
		1718	if (expect_true (--active < --periodiccnt))
1077	{	1719	{
1078	periodics [w->active - 1] = periodics [periodiccnt];	1720	periodics [active] = periodics [periodiccnt];
1079	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1721	adjustheap ((WT *)periodics, periodiccnt, active);
1080	}	1722	}
		1723	}
1081		1724
1082	ev_stop (EV_A_ (W)w);	1725	ev_stop (EV_A_ (W)w);
1083	}	1726	}
		1727
		1728	void noinline
		1729	ev_periodic_again (EV_P_ ev_periodic *w)
		1730	{
		1731	/* TODO: use adjustheap and recalculation */
		1732	ev_periodic_stop (EV_A_ w);
		1733	ev_periodic_start (EV_A_ w);
		1734	}
		1735	#endif
1084		1736
1085	#ifndef SA_RESTART	1737	#ifndef SA_RESTART
1086	# define SA_RESTART 0	1738	# define SA_RESTART 0
1087	#endif	1739	#endif
1088		1740
1089	void	1741	void noinline
1090	ev_signal_start (EV_P_ struct ev_signal *w)	1742	ev_signal_start (EV_P_ ev_signal *w)
1091	{	1743	{
		1744	#if EV_MULTIPLICITY
		1745	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1746	#endif
1092	if (ev_is_active (w))	1747	if (expect_false (ev_is_active (w)))
1093	return;	1748	return;
1094		1749
1095	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1750	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1096		1751
1097	ev_start (EV_A_ (W)w, 1);	1752	ev_start (EV_A_ (W)w, 1);
1098	array_needsize (signals, signalmax, w->signum, signals_init);	1753	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1099	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1754	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1100		1755
1101	if (!w->next)	1756	if (!((WL)w)->next)
1102	{	1757	{
		1758	#if _WIN32
		1759	signal (w->signum, sighandler);
		1760	#else
1103	struct sigaction sa;	1761	struct sigaction sa;
1104	sa.sa_handler = sighandler;	1762	sa.sa_handler = sighandler;
1105	sigfillset (&sa.sa_mask);	1763	sigfillset (&sa.sa_mask);
1106	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1764	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1107	sigaction (w->signum, &sa, 0);	1765	sigaction (w->signum, &sa, 0);
		1766	#endif
1108	}	1767	}
1109	}	1768	}
1110		1769
1111	void	1770	void noinline
1112	ev_signal_stop (EV_P_ struct ev_signal *w)	1771	ev_signal_stop (EV_P_ ev_signal *w)
1113	{	1772	{
1114	ev_clear_pending (EV_A_ (W)w);	1773	clear_pending (EV_A_ (W)w);
1115	if (!ev_is_active (w))	1774	if (expect_false (!ev_is_active (w)))
1116	return;	1775	return;
1117		1776
1118	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1777	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1119	ev_stop (EV_A_ (W)w);	1778	ev_stop (EV_A_ (W)w);
1120		1779
1121	if (!signals [w->signum - 1].head)	1780	if (!signals [w->signum - 1].head)
1122	signal (w->signum, SIG_DFL);	1781	signal (w->signum, SIG_DFL);
1123	}	1782	}
1124		1783
1125	void	1784	void
1126	ev_idle_start (EV_P_ struct ev_idle *w)	1785	ev_child_start (EV_P_ ev_child *w)
1127	{	1786	{
		1787	#if EV_MULTIPLICITY
		1788	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1789	#endif
1128	if (ev_is_active (w))	1790	if (expect_false (ev_is_active (w)))
1129	return;	1791	return;
1130		1792
1131	ev_start (EV_A_ (W)w, ++idlecnt);	1793	ev_start (EV_A_ (W)w, 1);
1132	array_needsize (idles, idlemax, idlecnt, );	1794	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1133	idles [idlecnt - 1] = w;
1134	}	1795	}
1135		1796
1136	void	1797	void
1137	ev_idle_stop (EV_P_ struct ev_idle *w)	1798	ev_child_stop (EV_P_ ev_child *w)
1138	{	1799	{
1139	ev_clear_pending (EV_A_ (W)w);	1800	clear_pending (EV_A_ (W)w);
1140	if (ev_is_active (w))	1801	if (expect_false (!ev_is_active (w)))
1141	return;	1802	return;
1142		1803
1143	idles [w->active - 1] = idles [--idlecnt];	1804	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1144	ev_stop (EV_A_ (W)w);	1805	ev_stop (EV_A_ (W)w);
1145	}	1806	}
1146		1807
		1808	#if EV_STAT_ENABLE
		1809
		1810	# ifdef _WIN32
		1811	# undef lstat
		1812	# define lstat(a,b) _stati64 (a,b)
		1813	# endif
		1814
		1815	#define DEF_STAT_INTERVAL 5.0074891
		1816	#define MIN_STAT_INTERVAL 0.1074891
		1817
		1818	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1819
		1820	#if EV_USE_INOTIFY
		1821	# define EV_INOTIFY_BUFSIZE 8192
		1822
		1823	static void noinline
		1824	infy_add (EV_P_ ev_stat *w)
		1825	{
		1826	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);
		1827
		1828	if (w->wd < 0)
		1829	{
		1830	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1831
		1832	/* monitor some parent directory for speedup hints */
		1833	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1834	{
		1835	char path [4096];
		1836	strcpy (path, w->path);
		1837
		1838	do
		1839	{
		1840	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1841	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1842
		1843	char *pend = strrchr (path, '/');
		1844
		1845	if (!pend)
		1846	break; /* whoops, no '/', complain to your admin */
		1847
		1848	*pend = 0;
		1849	w->wd = inotify_add_watch (fs_fd, path, mask);
		1850	}
		1851	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1852	}
		1853	}
		1854	else
		1855	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1856
		1857	if (w->wd >= 0)
		1858	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1859	}
		1860
		1861	static void noinline
		1862	infy_del (EV_P_ ev_stat *w)
		1863	{
		1864	int slot;
		1865	int wd = w->wd;
		1866
		1867	if (wd < 0)
		1868	return;
		1869
		1870	w->wd = -2;
		1871	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1872	wlist_del (&fs_hash [slot].head, (WL)w);
		1873
		1874	/* remove this watcher, if others are watching it, they will rearm */
		1875	inotify_rm_watch (fs_fd, wd);
		1876	}
		1877
		1878	static void noinline
		1879	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1880	{
		1881	if (slot < 0)
		1882	/* overflow, need to check for all hahs slots */
		1883	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1884	infy_wd (EV_A_ slot, wd, ev);
		1885	else
		1886	{
		1887	WL w_;
		1888
		1889	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1890	{
		1891	ev_stat *w = (ev_stat *)w_;
		1892	w_ = w_->next; /* lets us remove this watcher and all before it */
		1893
		1894	if (w->wd == wd || wd == -1)
		1895	{
		1896	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1897	{
		1898	w->wd = -1;
		1899	infy_add (EV_A_ w); /* re-add, no matter what */
		1900	}
		1901
		1902	stat_timer_cb (EV_A_ &w->timer, 0);
		1903	}
		1904	}
		1905	}
		1906	}
		1907
		1908	static void
		1909	infy_cb (EV_P_ ev_io *w, int revents)
		1910	{
		1911	char buf [EV_INOTIFY_BUFSIZE];
		1912	struct inotify_event *ev = (struct inotify_event *)buf;
		1913	int ofs;
		1914	int len = read (fs_fd, buf, sizeof (buf));
		1915
		1916	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1917	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1918	}
		1919
		1920	void inline_size
		1921	infy_init (EV_P)
		1922	{
		1923	if (fs_fd != -2)
		1924	return;
		1925
		1926	fs_fd = inotify_init ();
		1927
		1928	if (fs_fd >= 0)
		1929	{
		1930	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1931	ev_set_priority (&fs_w, EV_MAXPRI);
		1932	ev_io_start (EV_A_ &fs_w);
		1933	}
		1934	}
		1935
		1936	void inline_size
		1937	infy_fork (EV_P)
		1938	{
		1939	int slot;
		1940
		1941	if (fs_fd < 0)
		1942	return;
		1943
		1944	close (fs_fd);
		1945	fs_fd = inotify_init ();
		1946
		1947	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1948	{
		1949	WL w_ = fs_hash [slot].head;
		1950	fs_hash [slot].head = 0;
		1951
		1952	while (w_)
		1953	{
		1954	ev_stat *w = (ev_stat *)w_;
		1955	w_ = w_->next; /* lets us add this watcher */
		1956
		1957	w->wd = -1;
		1958
		1959	if (fs_fd >= 0)
		1960	infy_add (EV_A_ w); /* re-add, no matter what */
		1961	else
		1962	ev_timer_start (EV_A_ &w->timer);
		1963	}
		1964
		1965	}
		1966	}
		1967
		1968	#endif
		1969
1147	void	1970	void
		1971	ev_stat_stat (EV_P_ ev_stat *w)
		1972	{
		1973	if (lstat (w->path, &w->attr) < 0)
		1974	w->attr.st_nlink = 0;
		1975	else if (!w->attr.st_nlink)
		1976	w->attr.st_nlink = 1;
		1977	}
		1978
		1979	static void noinline
		1980	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1981	{
		1982	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1983
		1984	/* we copy this here each the time so that */
		1985	/* prev has the old value when the callback gets invoked */
		1986	w->prev = w->attr;
		1987	ev_stat_stat (EV_A_ w);
		1988
		1989	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1990	if (
		1991	w->prev.st_dev != w->attr.st_dev
		1992	|| w->prev.st_ino != w->attr.st_ino
		1993	|| w->prev.st_mode != w->attr.st_mode
		1994	|| w->prev.st_nlink != w->attr.st_nlink
		1995	|| w->prev.st_uid != w->attr.st_uid
		1996	|| w->prev.st_gid != w->attr.st_gid
		1997	|| w->prev.st_rdev != w->attr.st_rdev
		1998	|| w->prev.st_size != w->attr.st_size
		1999	|| w->prev.st_atime != w->attr.st_atime
		2000	|| w->prev.st_mtime != w->attr.st_mtime
		2001	|| w->prev.st_ctime != w->attr.st_ctime
		2002	) {
		2003	#if EV_USE_INOTIFY
		2004	infy_del (EV_A_ w);
		2005	infy_add (EV_A_ w);
		2006	ev_stat_stat (EV_A_ w); /* avoid race... */
		2007	#endif
		2008
		2009	ev_feed_event (EV_A_ w, EV_STAT);
		2010	}
		2011	}
		2012
		2013	void
		2014	ev_stat_start (EV_P_ ev_stat *w)
		2015	{
		2016	if (expect_false (ev_is_active (w)))
		2017	return;
		2018
		2019	/* since we use memcmp, we need to clear any padding data etc. */
		2020	memset (&w->prev, 0, sizeof (ev_statdata));
		2021	memset (&w->attr, 0, sizeof (ev_statdata));
		2022
		2023	ev_stat_stat (EV_A_ w);
		2024
		2025	if (w->interval < MIN_STAT_INTERVAL)
		2026	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2027
		2028	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2029	ev_set_priority (&w->timer, ev_priority (w));
		2030
		2031	#if EV_USE_INOTIFY
		2032	infy_init (EV_A);
		2033
		2034	if (fs_fd >= 0)
		2035	infy_add (EV_A_ w);
		2036	else
		2037	#endif
		2038	ev_timer_start (EV_A_ &w->timer);
		2039
		2040	ev_start (EV_A_ (W)w, 1);
		2041	}
		2042
		2043	void
		2044	ev_stat_stop (EV_P_ ev_stat *w)
		2045	{
		2046	clear_pending (EV_A_ (W)w);
		2047	if (expect_false (!ev_is_active (w)))
		2048	return;
		2049
		2050	#if EV_USE_INOTIFY
		2051	infy_del (EV_A_ w);
		2052	#endif
		2053	ev_timer_stop (EV_A_ &w->timer);
		2054
		2055	ev_stop (EV_A_ (W)w);
		2056	}
		2057	#endif
		2058
		2059	#if EV_IDLE_ENABLE
		2060	void
		2061	ev_idle_start (EV_P_ ev_idle *w)
		2062	{
		2063	if (expect_false (ev_is_active (w)))
		2064	return;
		2065
		2066	pri_adjust (EV_A_ (W)w);
		2067
		2068	{
		2069	int active = ++idlecnt [ABSPRI (w)];
		2070
		2071	++idleall;
		2072	ev_start (EV_A_ (W)w, active);
		2073
		2074	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2075	idles [ABSPRI (w)][active - 1] = w;
		2076	}
		2077	}
		2078
		2079	void
		2080	ev_idle_stop (EV_P_ ev_idle *w)
		2081	{
		2082	clear_pending (EV_A_ (W)w);
		2083	if (expect_false (!ev_is_active (w)))
		2084	return;
		2085
		2086	{
		2087	int active = ((W)w)->active;
		2088
		2089	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2090	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2091
		2092	ev_stop (EV_A_ (W)w);
		2093	--idleall;
		2094	}
		2095	}
		2096	#endif
		2097
		2098	void
1148	ev_prepare_start (EV_P_ struct ev_prepare *w)	2099	ev_prepare_start (EV_P_ ev_prepare *w)
1149	{	2100	{
1150	if (ev_is_active (w))	2101	if (expect_false (ev_is_active (w)))
1151	return;	2102	return;
1152		2103
1153	ev_start (EV_A_ (W)w, ++preparecnt);	2104	ev_start (EV_A_ (W)w, ++preparecnt);
1154	array_needsize (prepares, preparemax, preparecnt, );	2105	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1155	prepares [preparecnt - 1] = w;	2106	prepares [preparecnt - 1] = w;
1156	}	2107	}
1157		2108
1158	void	2109	void
1159	ev_prepare_stop (EV_P_ struct ev_prepare *w)	2110	ev_prepare_stop (EV_P_ ev_prepare *w)
1160	{	2111	{
1161	ev_clear_pending (EV_A_ (W)w);	2112	clear_pending (EV_A_ (W)w);
1162	if (ev_is_active (w))	2113	if (expect_false (!ev_is_active (w)))
1163	return;	2114	return;
1164		2115
		2116	{
		2117	int active = ((W)w)->active;
1165	prepares [w->active - 1] = prepares [--preparecnt];	2118	prepares [active - 1] = prepares [--preparecnt];
		2119	((W)prepares [active - 1])->active = active;
		2120	}
		2121
1166	ev_stop (EV_A_ (W)w);	2122	ev_stop (EV_A_ (W)w);
1167	}	2123	}
1168		2124
1169	void	2125	void
1170	ev_check_start (EV_P_ struct ev_check *w)	2126	ev_check_start (EV_P_ ev_check *w)
1171	{	2127	{
1172	if (ev_is_active (w))	2128	if (expect_false (ev_is_active (w)))
1173	return;	2129	return;
1174		2130
1175	ev_start (EV_A_ (W)w, ++checkcnt);	2131	ev_start (EV_A_ (W)w, ++checkcnt);
1176	array_needsize (checks, checkmax, checkcnt, );	2132	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1177	checks [checkcnt - 1] = w;	2133	checks [checkcnt - 1] = w;
1178	}	2134	}
1179		2135
1180	void	2136	void
1181	ev_check_stop (EV_P_ struct ev_check *w)	2137	ev_check_stop (EV_P_ ev_check *w)
1182	{	2138	{
1183	ev_clear_pending (EV_A_ (W)w);	2139	clear_pending (EV_A_ (W)w);
1184	if (ev_is_active (w))	2140	if (expect_false (!ev_is_active (w)))
1185	return;	2141	return;
1186		2142
		2143	{
		2144	int active = ((W)w)->active;
1187	checks [w->active - 1] = checks [--checkcnt];	2145	checks [active - 1] = checks [--checkcnt];
		2146	((W)checks [active - 1])->active = active;
		2147	}
		2148
1188	ev_stop (EV_A_ (W)w);	2149	ev_stop (EV_A_ (W)w);
1189	}	2150	}
1190		2151
1191	void	2152	#if EV_EMBED_ENABLE
1192	ev_child_start (EV_P_ struct ev_child *w)	2153	void noinline
		2154	ev_embed_sweep (EV_P_ ev_embed *w)
1193	{	2155	{
		2156	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2157	}
		2158
		2159	static void
		2160	embed_cb (EV_P_ ev_io *io, int revents)
		2161	{
		2162	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2163
1194	if (ev_is_active (w))	2164	if (ev_cb (w))
		2165	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2166	else
		2167	ev_embed_sweep (loop, w);
		2168	}
		2169
		2170	void
		2171	ev_embed_start (EV_P_ ev_embed *w)
		2172	{
		2173	if (expect_false (ev_is_active (w)))
1195	return;	2174	return;
		2175
		2176	{
		2177	struct ev_loop *loop = w->loop;
		2178	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2179	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2180	}
		2181
		2182	ev_set_priority (&w->io, ev_priority (w));
		2183	ev_io_start (EV_A_ &w->io);
1196		2184
1197	ev_start (EV_A_ (W)w, 1);	2185	ev_start (EV_A_ (W)w, 1);
1198	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1199	}	2186	}
1200		2187
1201	void	2188	void
1202	ev_child_stop (EV_P_ struct ev_child *w)	2189	ev_embed_stop (EV_P_ ev_embed *w)
1203	{	2190	{
1204	ev_clear_pending (EV_A_ (W)w);	2191	clear_pending (EV_A_ (W)w);
1205	if (ev_is_active (w))	2192	if (expect_false (!ev_is_active (w)))
1206	return;	2193	return;
1207		2194
1208	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2195	ev_io_stop (EV_A_ &w->io);
		2196
1209	ev_stop (EV_A_ (W)w);	2197	ev_stop (EV_A_ (W)w);
1210	}	2198	}
		2199	#endif
		2200
		2201	#if EV_FORK_ENABLE
		2202	void
		2203	ev_fork_start (EV_P_ ev_fork *w)
		2204	{
		2205	if (expect_false (ev_is_active (w)))
		2206	return;
		2207
		2208	ev_start (EV_A_ (W)w, ++forkcnt);
		2209	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2210	forks [forkcnt - 1] = w;
		2211	}
		2212
		2213	void
		2214	ev_fork_stop (EV_P_ ev_fork *w)
		2215	{
		2216	clear_pending (EV_A_ (W)w);
		2217	if (expect_false (!ev_is_active (w)))
		2218	return;
		2219
		2220	{
		2221	int active = ((W)w)->active;
		2222	forks [active - 1] = forks [--forkcnt];
		2223	((W)forks [active - 1])->active = active;
		2224	}
		2225
		2226	ev_stop (EV_A_ (W)w);
		2227	}
		2228	#endif
1211		2229
1212	/*****************************************************************************/	2230	/*****************************************************************************/
1213		2231
1214	struct ev_once	2232	struct ev_once
1215	{	2233	{
1216	struct ev_io io;	2234	ev_io io;
1217	struct ev_timer to;	2235	ev_timer to;
1218	void (*cb)(int revents, void *arg);	2236	void (*cb)(int revents, void *arg);
1219	void *arg;	2237	void *arg;
1220	};	2238	};
1221		2239
1222	static void	2240	static void
…		…
1225	void (*cb)(int revents, void *arg) = once->cb;	2243	void (*cb)(int revents, void *arg) = once->cb;
1226	void *arg = once->arg;	2244	void *arg = once->arg;
1227		2245
1228	ev_io_stop (EV_A_ &once->io);	2246	ev_io_stop (EV_A_ &once->io);
1229	ev_timer_stop (EV_A_ &once->to);	2247	ev_timer_stop (EV_A_ &once->to);
1230	free (once);	2248	ev_free (once);
1231		2249
1232	cb (revents, arg);	2250	cb (revents, arg);
1233	}	2251	}
1234		2252
1235	static void	2253	static void
1236	once_cb_io (EV_P_ struct ev_io *w, int revents)	2254	once_cb_io (EV_P_ ev_io *w, int revents)
1237	{	2255	{
1238	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2256	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1239	}	2257	}
1240		2258
1241	static void	2259	static void
1242	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2260	once_cb_to (EV_P_ ev_timer *w, int revents)
1243	{	2261	{
1244	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2262	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1245	}	2263	}
1246		2264
1247	void	2265	void
1248	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2266	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1249	{	2267	{
1250	struct ev_once *once = malloc (sizeof (struct ev_once));	2268	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1251		2269
1252	if (!once)	2270	if (expect_false (!once))
		2271	{
1253	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2272	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1254	else	2273	return;
1255	{	2274	}
		2275
1256	once->cb = cb;	2276	once->cb = cb;
1257	once->arg = arg;	2277	once->arg = arg;
1258		2278
1259	ev_watcher_init (&once->io, once_cb_io);	2279	ev_init (&once->io, once_cb_io);
1260	if (fd >= 0)	2280	if (fd >= 0)
1261	{	2281	{
1262	ev_io_set (&once->io, fd, events);	2282	ev_io_set (&once->io, fd, events);
1263	ev_io_start (EV_A_ &once->io);	2283	ev_io_start (EV_A_ &once->io);
1264	}	2284	}
1265		2285
1266	ev_watcher_init (&once->to, once_cb_to);	2286	ev_init (&once->to, once_cb_to);
1267	if (timeout >= 0.)	2287	if (timeout >= 0.)
1268	{	2288	{
1269	ev_timer_set (&once->to, timeout, 0.);	2289	ev_timer_set (&once->to, timeout, 0.);
1270	ev_timer_start (EV_A_ &once->to);	2290	ev_timer_start (EV_A_ &once->to);
1271	}
1272	}
1273	}
1274
1275	/*****************************************************************************/
1276
1277	#if 0
1278
1279	struct ev_io wio;
1280
1281	static void
1282	sin_cb (struct ev_io *w, int revents)
1283	{
1284	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1285	}
1286
1287	static void
1288	ocb (struct ev_timer *w, int revents)
1289	{
1290	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1291	ev_timer_stop (w);
1292	ev_timer_start (w);
1293	}
1294
1295	static void
1296	scb (struct ev_signal *w, int revents)
1297	{
1298	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1299	ev_io_stop (&wio);
1300	ev_io_start (&wio);
1301	}
1302
1303	static void
1304	gcb (struct ev_signal *w, int revents)
1305	{
1306	fprintf (stderr, "generic %x\n", revents);
1307
1308	}
1309
1310	int main (void)
1311	{
1312	ev_init (0);
1313
1314	ev_io_init (&wio, sin_cb, 0, EV_READ);
1315	ev_io_start (&wio);
1316
1317	struct ev_timer t[10000];
1318
1319	#if 0
1320	int i;
1321	for (i = 0; i < 10000; ++i)
1322	{	2291	}
1323	struct ev_timer *w = t + i;
1324	ev_watcher_init (w, ocb, i);
1325	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1326	ev_timer_start (w);
1327	if (drand48 () < 0.5)
1328	ev_timer_stop (w);
1329	}
1330	#endif
1331
1332	struct ev_timer t1;
1333	ev_timer_init (&t1, ocb, 5, 10);
1334	ev_timer_start (&t1);
1335
1336	struct ev_signal sig;
1337	ev_signal_init (&sig, scb, SIGQUIT);
1338	ev_signal_start (&sig);
1339
1340	struct ev_check cw;
1341	ev_check_init (&cw, gcb);
1342	ev_check_start (&cw);
1343
1344	struct ev_idle iw;
1345	ev_idle_init (&iw, gcb);
1346	ev_idle_start (&iw);
1347
1348	ev_loop (0);
1349
1350	return 0;
1351	}	2292	}
1352		2293
		2294	#ifdef __cplusplus
		2295	}
1353	#endif	2296	#endif
1354		2297
1355
1356
1357

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