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Comparing libev/ev.c (file contents):
Revision 1.50 by root, Sat Nov 3 19:41:55 2007 UTC vs.
Revision 1.170 by root, Sat Dec 8 22:11:14 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 ev_tstamp now_floor, now, diff; /* monotonic clock */	256	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		257
		258	#ifdef _WIN32
		259	# include "ev_win32.c"
		260	#endif
		261
		262	/*****************************************************************************/
		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
		314	typedef struct
		315	{
		316	WL head;
		317	unsigned char events;
		318	unsigned char reify;
		319	#if EV_SELECT_IS_WINSOCKET
		320	SOCKET handle;
		321	#endif
		322	} ANFD;
		323
		324	typedef struct
		325	{
		326	W w;
		327	int events;
		328	} ANPENDING;
		329
		330	#if EV_USE_INOTIFY
		331	typedef struct
		332	{
		333	WL head;
		334	} ANFS;
		335	#endif
		336
		337	#if EV_MULTIPLICITY
		338
		339	struct ev_loop
		340	{
		341	ev_tstamp ev_rt_now;
		342	#define ev_rt_now ((loop)->ev_rt_now)
		343	#define VAR(name,decl) decl;
		344	#include "ev_vars.h"
		345	#undef VAR
		346	};
		347	#include "ev_wrap.h"
		348
		349	static struct ev_loop default_loop_struct;
		350	struct ev_loop *ev_default_loop_ptr;
		351
		352	#else
		353
119	ev_tstamp ev_now;	354	ev_tstamp ev_rt_now;
120	int ev_method;	355	#define VAR(name,decl) static decl;
		356	#include "ev_vars.h"
		357	#undef VAR
121		358
122	static int have_monotonic; /* runtime */	359	static int ev_default_loop_ptr;
123		360
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	361	#endif
125	static void (*method_modify)(int fd, int oev, int nev);
126	static void (*method_poll)(ev_tstamp timeout);
127		362
128	/*****************************************************************************/	363	/*****************************************************************************/
129		364
130	ev_tstamp	365	ev_tstamp
131	ev_time (void)	366	ev_time (void)
…		…
139	gettimeofday (&tv, 0);	374	gettimeofday (&tv, 0);
140	return tv.tv_sec + tv.tv_usec * 1e-6;	375	return tv.tv_sec + tv.tv_usec * 1e-6;
141	#endif	376	#endif
142	}	377	}
143		378
144	static ev_tstamp	379	ev_tstamp inline_size
145	get_clock (void)	380	get_clock (void)
146	{	381	{
147	#if EV_USE_MONOTONIC	382	#if EV_USE_MONOTONIC
148	if (expect_true (have_monotonic))	383	if (expect_true (have_monotonic))
149	{	384	{
…		…
154	#endif	389	#endif
155		390
156	return ev_time ();	391	return ev_time ();
157	}	392	}
158		393
159	#define array_roundsize(base,n) ((n) | 4 & ~3)	394	#if EV_MULTIPLICITY
		395	ev_tstamp
		396	ev_now (EV_P)
		397	{
		398	return ev_rt_now;
		399	}
		400	#endif
160		401
		402	int inline_size
		403	array_nextsize (int elem, int cur, int cnt)
		404	{
		405	int ncur = cur + 1;
		406
		407	do
		408	ncur <<= 1;
		409	while (cnt > ncur);
		410
		411	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		412	if (elem * ncur > 4096)
		413	{
		414	ncur *= elem;
		415	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		416	ncur = ncur - sizeof (void *) * 4;
		417	ncur /= elem;
		418	}
		419
		420	return ncur;
		421	}
		422
		423	inline_speed void *
		424	array_realloc (int elem, void *base, int *cur, int cnt)
		425	{
		426	*cur = array_nextsize (elem, *cur, cnt);
		427	return ev_realloc (base, elem * *cur);
		428	}
		429
161	#define array_needsize(base,cur,cnt,init) \	430	#define array_needsize(type,base,cur,cnt,init) \
162	if (expect_false ((cnt) > cur)) \	431	if (expect_false ((cnt) > (cur))) \
163	{ \	432	{ \
164	int newcnt = cur; \	433	int ocur_ = (cur); \
165	do \	434	(base) = (type *)array_realloc \
166	{ \	435	(sizeof (type), (base), &(cur), (cnt)); \
167	newcnt = array_roundsize (base, newcnt << 1); \	436	init ((base) + (ocur_), (cur) - ocur_); \
168	} \	437	}
169	while ((cnt) > newcnt); \	438
		439	#if 0
		440	#define array_slim(type,stem) \
		441	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
170	\	442	{ \
171	base = realloc (base, sizeof (*base) * (newcnt)); \	443	stem ## max = array_roundsize (stem ## cnt >> 1); \
172	init (base + cur, newcnt - cur); \	444	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
173	cur = newcnt; \	445	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
174	}	446	}
		447	#endif
		448
		449	#define array_free(stem, idx) \
		450	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
175		451
176	/*****************************************************************************/	452	/*****************************************************************************/
177		453
178	typedef struct	454	void noinline
		455	ev_feed_event (EV_P_ void *w, int revents)
179	{	456	{
180	struct ev_watcher_list *head;	457	W w_ = (W)w;
181	unsigned char events;
182	unsigned char reify;
183	} ANFD;
184		458
185	static ANFD *anfds;	459	if (expect_false (w_->pending))
186	static int anfdmax;	460	{
		461	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		462	return;
		463	}
187		464
188	static void	465	w_->pending = ++pendingcnt [ABSPRI (w_)];
		466	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		467	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		468	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		469	}
		470
		471	void inline_size
		472	queue_events (EV_P_ W *events, int eventcnt, int type)
		473	{
		474	int i;
		475
		476	for (i = 0; i < eventcnt; ++i)
		477	ev_feed_event (EV_A_ events [i], type);
		478	}
		479
		480	/*****************************************************************************/
		481
		482	void inline_size
189	anfds_init (ANFD *base, int count)	483	anfds_init (ANFD *base, int count)
190	{	484	{
191	while (count--)	485	while (count--)
192	{	486	{
193	base->head = 0;	487	base->head = 0;
…		…
196		490
197	++base;	491	++base;
198	}	492	}
199	}	493	}
200		494
201	typedef struct	495	void inline_speed
202	{
203	W w;
204	int events;
205	} ANPENDING;
206
207	static ANPENDING *pendings [NUMPRI];
208	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
209
210	static void
211	event (W w, int events)
212	{
213	if (w->pending)
214	{
215	pendings [ABSPRI (w)][w->pending - 1].events |= events;
216	return;
217	}
218
219	w->pending = ++pendingcnt [ABSPRI (w)];
220	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
221	pendings [ABSPRI (w)][w->pending - 1].w = w;
222	pendings [ABSPRI (w)][w->pending - 1].events = events;
223	}
224
225	static void
226	queue_events (W *events, int eventcnt, int type)
227	{
228	int i;
229
230	for (i = 0; i < eventcnt; ++i)
231	event (events [i], type);
232	}
233
234	static void
235	fd_event (int fd, int events)	496	fd_event (EV_P_ int fd, int revents)
236	{	497	{
237	ANFD *anfd = anfds + fd;	498	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	499	ev_io *w;
239		500
240	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)
241	{	502	{
242	int ev = w->events & events;	503	int ev = w->events & revents;
243		504
244	if (ev)	505	if (ev)
245	event ((W)w, ev);	506	ev_feed_event (EV_A_ (W)w, ev);
246	}	507	}
247	}	508	}
248		509
249	/*****************************************************************************/	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	}
250		516
251	static int *fdchanges;	517	void inline_size
252	static int fdchangemax, fdchangecnt;	518	fd_reify (EV_P)
253
254	static void
255	fd_reify (void)
256	{	519	{
257	int i;	520	int i;
258		521
259	for (i = 0; i < fdchangecnt; ++i)	522	for (i = 0; i < fdchangecnt; ++i)
260	{	523	{
261	int fd = fdchanges [i];	524	int fd = fdchanges [i];
262	ANFD *anfd = anfds + fd;	525	ANFD *anfd = anfds + fd;
263	struct ev_io *w;	526	ev_io *w;
264		527
265	int events = 0;	528	int events = 0;
266		529
267	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)
268	events |= w->events;	531	events |= w->events;
269		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
270	anfd->reify = 0;	542	anfd->reify = 0;
271		543
272	if (anfd->events != events)
273	{
274	method_modify (fd, anfd->events, events);	544	backend_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	545	anfd->events = events;
276	}
277	}	546	}
278		547
279	fdchangecnt = 0;	548	fdchangecnt = 0;
280	}	549	}
281		550
282	static void	551	void inline_size
283	fd_change (int fd)	552	fd_change (EV_P_ int fd)
284	{	553	{
285	if (anfds [fd].reify || fdchangecnt < 0)	554	if (expect_false (anfds [fd].reify))
286	return;	555	return;
287		556
288	anfds [fd].reify = 1;	557	anfds [fd].reify = 1;
289		558
290	++fdchangecnt;	559	++fdchangecnt;
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	560	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
292	fdchanges [fdchangecnt - 1] = fd;	561	fdchanges [fdchangecnt - 1] = fd;
293	}	562	}
294		563
295	static void	564	void inline_speed
296	fd_kill (int fd)	565	fd_kill (EV_P_ int fd)
297	{	566	{
298	struct ev_io *w;	567	ev_io *w;
299		568
300	while ((w = (struct ev_io *)anfds [fd].head))	569	while ((w = (ev_io *)anfds [fd].head))
301	{	570	{
302	ev_io_stop (w);	571	ev_io_stop (EV_A_ w);
303	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	572	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
304	}	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
305	}	584	}
306		585
307	/* called on EBADF to verify fds */	586	/* called on EBADF to verify fds */
308	static void	587	static void noinline
309	fd_ebadf (void)	588	fd_ebadf (EV_P)
310	{	589	{
311	int fd;	590	int fd;
312		591
313	for (fd = 0; fd < anfdmax; ++fd)	592	for (fd = 0; fd < anfdmax; ++fd)
314	if (anfds [fd].events)	593	if (anfds [fd].events)
315	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	594	if (!fd_valid (fd) == -1 && errno == EBADF)
316	fd_kill (fd);	595	fd_kill (EV_A_ fd);
317	}	596	}
318		597
319	/* 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 */
320	static void	599	static void noinline
321	fd_enomem (void)	600	fd_enomem (EV_P)
322	{	601	{
323	int fd = anfdmax;	602	int fd;
324		603
325	while (fd--)	604	for (fd = anfdmax; fd--; )
326	if (anfds [fd].events)	605	if (anfds [fd].events)
327	{	606	{
328	close (fd);
329	fd_kill (fd);	607	fd_kill (EV_A_ fd);
330	return;	608	return;
331	}	609	}
332	}	610	}
333		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
334	/*****************************************************************************/	626	/*****************************************************************************/
335		627
336	static struct ev_timer **timers;	628	void inline_speed
337	static int timermax, timercnt;
338
339	static struct ev_periodic **periodics;
340	static int periodicmax, periodiccnt;
341
342	static void
343	upheap (WT *timers, int k)	629	upheap (WT *heap, int k)
344	{	630	{
345	WT w = timers [k];	631	WT w = heap [k];
346		632
347	while (k && timers [k >> 1]->at > w->at)	633	while (k && heap [k >> 1]->at > w->at)
348	{	634	{
349	timers [k] = timers [k >> 1];	635	heap [k] = heap [k >> 1];
350	timers [k]->active = k + 1;	636	((W)heap [k])->active = k + 1;
351	k >>= 1;	637	k >>= 1;
352	}	638	}
353		639
354	timers [k] = w;	640	heap [k] = w;
355	timers [k]->active = k + 1;	641	((W)heap [k])->active = k + 1;
356		642
357	}	643	}
358		644
359	static void	645	void inline_speed
360	downheap (WT *timers, int N, int k)	646	downheap (WT *heap, int N, int k)
361	{	647	{
362	WT w = timers [k];	648	WT w = heap [k];
363		649
364	while (k < (N >> 1))	650	while (k < (N >> 1))
365	{	651	{
366	int j = k << 1;	652	int j = k << 1;
367		653
368	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	654	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
369	++j;	655	++j;
370		656
371	if (w->at <= timers [j]->at)	657	if (w->at <= heap [j]->at)
372	break;	658	break;
373		659
374	timers [k] = timers [j];	660	heap [k] = heap [j];
375	timers [k]->active = k + 1;	661	((W)heap [k])->active = k + 1;
376	k = j;	662	k = j;
377	}	663	}
378		664
379	timers [k] = w;	665	heap [k] = w;
380	timers [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);
381	}	674	}
382		675
383	/*****************************************************************************/	676	/*****************************************************************************/
384		677
385	typedef struct	678	typedef struct
386	{	679	{
387	struct ev_watcher_list *head;	680	WL head;
388	sig_atomic_t volatile gotsig;	681	sig_atomic_t volatile gotsig;
389	} ANSIG;	682	} ANSIG;
390		683
391	static ANSIG *signals;	684	static ANSIG *signals;
392	static int signalmax;	685	static int signalmax;
393		686
394	static int sigpipe [2];	687	static int sigpipe [2];
395	static sig_atomic_t volatile gotsig;	688	static sig_atomic_t volatile gotsig;
396	static struct ev_io sigev;	689	static ev_io sigev;
397		690
398	static void	691	void inline_size
399	signals_init (ANSIG *base, int count)	692	signals_init (ANSIG *base, int count)
400	{	693	{
401	while (count--)	694	while (count--)
402	{	695	{
403	base->head = 0;	696	base->head = 0;
…		…
408	}	701	}
409		702
410	static void	703	static void
411	sighandler (int signum)	704	sighandler (int signum)
412	{	705	{
		706	#if _WIN32
		707	signal (signum, sighandler);
		708	#endif
		709
413	signals [signum - 1].gotsig = 1;	710	signals [signum - 1].gotsig = 1;
414		711
415	if (!gotsig)	712	if (!gotsig)
416	{	713	{
417	int old_errno = errno;	714	int old_errno = errno;
…		…
419	write (sigpipe [1], &signum, 1);	716	write (sigpipe [1], &signum, 1);
420	errno = old_errno;	717	errno = old_errno;
421	}	718	}
422	}	719	}
423		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
424	static void	741	static void
425	sigcb (struct ev_io *iow, int revents)	742	sigcb (EV_P_ ev_io *iow, int revents)
426	{	743	{
427	struct ev_watcher_list *w;
428	int signum;	744	int signum;
429		745
430	read (sigpipe [0], &revents, 1);	746	read (sigpipe [0], &revents, 1);
431	gotsig = 0;	747	gotsig = 0;
432		748
433	for (signum = signalmax; signum--; )	749	for (signum = signalmax; signum--; )
434	if (signals [signum].gotsig)	750	if (signals [signum].gotsig)
		751	ev_feed_signal_event (EV_A_ signum + 1);
		752	}
		753
		754	void inline_size
		755	fd_intern (int fd)
		756	{
		757	#ifdef _WIN32
		758	int arg = 1;
		759	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		760	#else
		761	fcntl (fd, F_SETFD, FD_CLOEXEC);
		762	fcntl (fd, F_SETFL, O_NONBLOCK);
		763	#endif
		764	}
		765
		766	static void noinline
		767	siginit (EV_P)
		768	{
		769	fd_intern (sigpipe [0]);
		770	fd_intern (sigpipe [1]);
		771
		772	ev_io_set (&sigev, sigpipe [0], EV_READ);
		773	ev_io_start (EV_A_ &sigev);
		774	ev_unref (EV_A); /* child watcher should not keep loop alive */
		775	}
		776
		777	/*****************************************************************************/
		778
		779	static ev_child *childs [EV_PID_HASHSIZE];
		780
		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)
435	{	792	{
436	signals [signum].gotsig = 0;	793	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
437		794	w->rpid = pid;
438	for (w = signals [signum].head; w; w = w->next)	795	w->rstatus = status;
439	event ((W)w, EV_SIGNAL);	796	ev_feed_event (EV_A_ (W)w, EV_CHILD);
440	}	797	}
441	}	798	}
442
443	static void
444	siginit (void)
445	{
446	#ifndef WIN32
447	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
448	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
449
450	/* rather than sort out wether we really need nb, set it */
451	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
452	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
453	#endif
454
455	ev_io_set (&sigev, sigpipe [0], EV_READ);
456	ev_io_start (&sigev);
457	}
458
459	/*****************************************************************************/
460
461	static struct ev_idle **idles;
462	static int idlemax, idlecnt;
463
464	static struct ev_prepare **prepares;
465	static int preparemax, preparecnt;
466
467	static struct ev_check **checks;
468	static int checkmax, checkcnt;
469
470	/*****************************************************************************/
471
472	static struct ev_child *childs [PID_HASHSIZE];
473	static struct ev_signal childev;
474
475	#ifndef WIN32
476		799
477	#ifndef WCONTINUED	800	#ifndef WCONTINUED
478	# define WCONTINUED 0	801	# define WCONTINUED 0
479	#endif	802	#endif
480		803
481	static void	804	static void
482	child_reap (struct ev_signal *sw, int chain, int pid, int status)
483	{
484	struct ev_child *w;
485
486	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
487	if (w->pid == pid || !w->pid)
488	{
489	w->priority = sw->priority; /* need to do it *now* */
490	w->rpid = pid;
491	w->rstatus = status;
492	event ((W)w, EV_CHILD);
493	}
494	}
495
496	static void
497	childcb (struct ev_signal *sw, int revents)	805	childcb (EV_P_ ev_signal *sw, int revents)
498	{	806	{
499	int pid, status;	807	int pid, status;
500		808
		809	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
501	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	810	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
502	{	811	if (!WCONTINUED
		812	|| errno != EINVAL
		813	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		814	return;
		815
503	/* 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 */
504	event ((W)sw, EV_SIGNAL);	818	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
505		819
506	child_reap (sw, pid, pid, status);	820	child_reap (EV_A_ sw, pid, pid, status);
		821	if (EV_PID_HASHSIZE > 1)
507	child_reap (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 */
508	}
509	}	823	}
510		824
511	#endif	825	#endif
512		826
513	/*****************************************************************************/	827	/*****************************************************************************/
514		828
		829	#if EV_USE_PORT
		830	# include "ev_port.c"
		831	#endif
515	#if EV_USE_KQUEUE	832	#if EV_USE_KQUEUE
516	# include "ev_kqueue.c"	833	# include "ev_kqueue.c"
517	#endif	834	#endif
518	#if EV_USE_EPOLL	835	#if EV_USE_EPOLL
519	# include "ev_epoll.c"	836	# include "ev_epoll.c"
…		…
536	{	853	{
537	return EV_VERSION_MINOR;	854	return EV_VERSION_MINOR;
538	}	855	}
539		856
540	/* 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 */
541	static int	858	int inline_size
542	enable_secure ()	859	enable_secure (void)
543	{	860	{
544	#ifdef WIN32	861	#ifdef _WIN32
545	return 0;	862	return 0;
546	#else	863	#else
547	return getuid () != geteuid ()	864	return getuid () != geteuid ()
548	|| getgid () != getegid ();	865	|| getgid () != getegid ();
549	#endif	866	#endif
550	}	867	}
551		868
552	int ev_init (int methods)	869	unsigned int
		870	ev_supported_backends (void)
553	{	871	{
554	if (!ev_method)	872	unsigned int flags = 0;
		873
		874	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		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)
		885	{
		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)
555	{	925	{
556	#if EV_USE_MONOTONIC	926	#if EV_USE_MONOTONIC
557	{	927	{
558	struct timespec ts;	928	struct timespec ts;
559	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	929	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
560	have_monotonic = 1;	930	have_monotonic = 1;
561	}	931	}
562	#endif	932	#endif
563		933
564	ev_now = ev_time ();	934	ev_rt_now = ev_time ();
565	now = get_clock ();	935	mn_now = get_clock ();
566	now_floor = now;	936	now_floor = mn_now;
567	diff = ev_now - now;	937	rtmn_diff = ev_rt_now - mn_now;
568		938
569	if (pipe (sigpipe))	939	/* pid check not overridable via env */
570	return 0;	940	#ifndef _WIN32
		941	if (flags & EVFLAG_FORKCHECK)
		942	curpid = getpid ();
		943	#endif
571		944
572	if (methods == EVMETHOD_AUTO)	945	if (!(flags & EVFLAG_NOENV)
573	if (!enable_secure () && getenv ("LIBEV_METHODS"))	946	&& !enable_secure ()
		947	&& getenv ("LIBEV_FLAGS"))
574	methods = atoi (getenv ("LIBEV_METHODS"));	948	flags = atoi (getenv ("LIBEV_FLAGS"));
575	else
576	methods = EVMETHOD_ANY;
577		949
578	ev_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
579	#if EV_USE_KQUEUE	962	#if EV_USE_KQUEUE
580	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	963	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
581	#endif	964	#endif
582	#if EV_USE_EPOLL	965	#if EV_USE_EPOLL
583	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	966	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
584	#endif	967	#endif
585	#if EV_USE_POLL	968	#if EV_USE_POLL
586	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	969	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
587	#endif	970	#endif
588	#if EV_USE_SELECT	971	#if EV_USE_SELECT
589	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	972	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
590	#endif	973	#endif
591		974
592	if (ev_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))
593	{	1119	{
594	ev_watcher_init (&sigev, sigcb);
595	ev_set_priority (&sigev, EV_MAXPRI);
596	siginit ();	1120	siginit (EV_A);
597		1121
598	#ifndef WIN32	1122	#ifndef _WIN32
599	ev_signal_init (&childev, childcb, SIGCHLD);	1123	ev_signal_init (&childev, childcb, SIGCHLD);
600	ev_set_priority (&childev, EV_MAXPRI);	1124	ev_set_priority (&childev, EV_MAXPRI);
601	ev_signal_start (&childev);	1125	ev_signal_start (EV_A_ &childev);
		1126	ev_unref (EV_A); /* child watcher should not keep loop alive */
602	#endif	1127	#endif
603	}	1128	}
		1129	else
		1130	ev_default_loop_ptr = 0;
604	}	1131	}
605		1132
606	return ev_method;	1133	return ev_default_loop_ptr;
		1134	}
		1135
		1136	void
		1137	ev_default_destroy (void)
		1138	{
		1139	#if EV_MULTIPLICITY
		1140	struct ev_loop *loop = ev_default_loop_ptr;
		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;
607	}	1166	}
608		1167
609	/*****************************************************************************/	1168	/*****************************************************************************/
610		1169
611	void	1170	void
612	ev_fork_prepare (void)	1171	ev_invoke (EV_P_ void *w, int revents)
613	{	1172	{
614	/* nop */	1173	EV_CB_INVOKE ((W)w, revents);
615	}	1174	}
616		1175
617	void	1176	void inline_speed
618	ev_fork_parent (void)
619	{
620	/* nop */
621	}
622
623	void
624	ev_fork_child (void)
625	{
626	#if EV_USE_EPOLL
627	if (ev_method == EVMETHOD_EPOLL)
628	epoll_postfork_child ();
629	#endif
630
631	ev_io_stop (&sigev);
632	close (sigpipe [0]);
633	close (sigpipe [1]);
634	pipe (sigpipe);
635	siginit ();
636	}
637
638	/*****************************************************************************/
639
640	static void
641	call_pending (void)	1177	call_pending (EV_P)
642	{	1178	{
643	int pri;	1179	int pri;
644		1180
645	for (pri = NUMPRI; pri--; )	1181	for (pri = NUMPRI; pri--; )
646	while (pendingcnt [pri])	1182	while (pendingcnt [pri])
647	{	1183	{
648	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1184	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
649		1185
650	if (p->w)	1186	if (expect_true (p->w))
651	{	1187	{
		1188	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1189
652	p->w->pending = 0;	1190	p->w->pending = 0;
653	p->w->cb (p->w, p->events);	1191	EV_CB_INVOKE (p->w, p->events);
654	}	1192	}
655	}	1193	}
656	}	1194	}
657		1195
658	static void	1196	void inline_size
659	timers_reify (void)	1197	timers_reify (EV_P)
660	{	1198	{
661	while (timercnt && timers [0]->at <= now)	1199	while (timercnt && ((WT)timers [0])->at <= mn_now)
662	{	1200	{
663	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)));*/
664		1204
665	/* first reschedule or stop timer */	1205	/* first reschedule or stop timer */
666	if (w->repeat)	1206	if (w->repeat)
667	{	1207	{
668	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
669	w->at = now + w->repeat;	1210	((WT)w)->at += w->repeat;
		1211	if (((WT)w)->at < mn_now)
		1212	((WT)w)->at = mn_now;
		1213
670	downheap ((WT *)timers, timercnt, 0);	1214	downheap ((WT *)timers, timercnt, 0);
671	}	1215	}
672	else	1216	else
673	ev_timer_stop (w); /* nonrepeating: stop timer */	1217	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
674		1218
675	event ((W)w, EV_TIMEOUT);	1219	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
676	}	1220	}
677	}	1221	}
678		1222
679	static void	1223	#if EV_PERIODIC_ENABLE
		1224	void inline_size
680	periodics_reify (void)	1225	periodics_reify (EV_P)
681	{	1226	{
682	while (periodiccnt && periodics [0]->at <= ev_now)	1227	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
683	{	1228	{
684	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)));*/
685		1232
686	/* first reschedule or stop timer */	1233	/* first reschedule or stop timer */
687	if (w->interval)	1234	if (w->reschedule_cb)
688	{	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	{
689	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1242	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
690	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1243	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
691	downheap ((WT *)periodics, periodiccnt, 0);	1244	downheap ((WT *)periodics, periodiccnt, 0);
692	}	1245	}
693	else	1246	else
694	ev_periodic_stop (w); /* nonrepeating: stop timer */	1247	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
695		1248
696	event ((W)w, EV_PERIODIC);	1249	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
697	}	1250	}
698	}	1251	}
699		1252
700	static void	1253	static void noinline
701	periodics_reschedule (ev_tstamp diff)	1254	periodics_reschedule (EV_P)
702	{	1255	{
703	int i;	1256	int i;
704		1257
705	/* adjust periodics after time jump */	1258	/* adjust periodics after time jump */
706	for (i = 0; i < periodiccnt; ++i)	1259	for (i = 0; i < periodiccnt; ++i)
707	{	1260	{
708	struct ev_periodic *w = periodics [i];	1261	ev_periodic *w = periodics [i];
709		1262
		1263	if (w->reschedule_cb)
		1264	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
710	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--; )
711	{	1284	{
712	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1285	if (pendingcnt [pri])
		1286	break;
713		1287
714	if (fabs (diff) >= 1e-4)	1288	if (idlecnt [pri])
715	{	1289	{
716	ev_periodic_stop (w);	1290	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
717	ev_periodic_start (w);	1291	break;
718
719	i = 0; /* restart loop, inefficient, but time jumps should be rare */
720	}	1292	}
721	}	1293	}
722	}	1294	}
723	}	1295	}
		1296	#endif
724		1297
725	static int	1298	int inline_size
726	time_update_monotonic (void)	1299	time_update_monotonic (EV_P)
727	{	1300	{
728	now = get_clock ();	1301	mn_now = get_clock ();
729		1302
730	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	1303	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
731	{	1304	{
732	ev_now = now + diff;	1305	ev_rt_now = rtmn_diff + mn_now;
733	return 0;	1306	return 0;
734	}	1307	}
735	else	1308	else
736	{	1309	{
737	now_floor = now;	1310	now_floor = mn_now;
738	ev_now = ev_time ();	1311	ev_rt_now = ev_time ();
739	return 1;	1312	return 1;
740	}	1313	}
741	}	1314	}
742		1315
743	static void	1316	void inline_size
744	time_update (void)	1317	time_update (EV_P)
745	{	1318	{
746	int i;	1319	int i;
747		1320
748	#if EV_USE_MONOTONIC	1321	#if EV_USE_MONOTONIC
749	if (expect_true (have_monotonic))	1322	if (expect_true (have_monotonic))
750	{	1323	{
751	if (time_update_monotonic ())	1324	if (time_update_monotonic (EV_A))
752	{	1325	{
753	ev_tstamp odiff = diff;	1326	ev_tstamp odiff = rtmn_diff;
754		1327
755	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; )
756	{	1337	{
757	diff = ev_now - now;	1338	rtmn_diff = ev_rt_now - mn_now;
758		1339
759	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1340	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
760	return; /* all is well */	1341	return; /* all is well */
761		1342
762	ev_now = ev_time ();	1343	ev_rt_now = ev_time ();
763	now = get_clock ();	1344	mn_now = get_clock ();
764	now_floor = now;	1345	now_floor = mn_now;
765	}	1346	}
766		1347
		1348	# if EV_PERIODIC_ENABLE
767	periodics_reschedule (diff - odiff);	1349	periodics_reschedule (EV_A);
		1350	# endif
768	/* no timer adjustment, as the monotonic clock doesn't jump */	1351	/* no timer adjustment, as the monotonic clock doesn't jump */
		1352	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
769	}	1353	}
770	}	1354	}
771	else	1355	else
772	#endif	1356	#endif
773	{	1357	{
774	ev_now = ev_time ();	1358	ev_rt_now = ev_time ();
775		1359
776	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1360	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
777	{	1361	{
		1362	#if EV_PERIODIC_ENABLE
778	periodics_reschedule (ev_now - now);	1363	periodics_reschedule (EV_A);
		1364	#endif
779		1365
780	/* 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 */
781	for (i = 0; i < timercnt; ++i)	1367	for (i = 0; i < timercnt; ++i)
782	timers [i]->at += diff;	1368	((WT)timers [i])->at += ev_rt_now - mn_now;
783	}	1369	}
784		1370
785	now = ev_now;	1371	mn_now = ev_rt_now;
786	}	1372	}
787	}	1373	}
788		1374
789	int ev_loop_done;	1375	void
		1376	ev_ref (EV_P)
		1377	{
		1378	++activecnt;
		1379	}
790		1380
		1381	void
		1382	ev_unref (EV_P)
		1383	{
		1384	--activecnt;
		1385	}
		1386
		1387	static int loop_done;
		1388
		1389	void
791	void ev_loop (int flags)	1390	ev_loop (EV_P_ int flags)
792	{	1391	{
793	double block;
794	ev_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 */
795		1397
796	do	1398	do
797	{	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
798	/* queue check watchers (and execute them) */	1419	/* queue prepare watchers (and execute them) */
799	if (expect_false (preparecnt))	1420	if (expect_false (preparecnt))
800	{	1421	{
801	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1422	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
802	call_pending ();	1423	call_pending (EV_A);
803	}	1424	}
804		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
805	/* update fd-related kernel structures */	1433	/* update fd-related kernel structures */
806	fd_reify ();	1434	fd_reify (EV_A);
807		1435
808	/* calculate blocking time */	1436	/* calculate blocking time */
		1437	{
		1438	ev_tstamp block;
809		1439
810	/* we only need this for !monotonic clockor timers, but as we basically	1440	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
811	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 */
812	#if EV_USE_MONOTONIC	1445	#if EV_USE_MONOTONIC
813	if (expect_true (have_monotonic))	1446	if (expect_true (have_monotonic))
814	time_update_monotonic ();	1447	time_update_monotonic (EV_A);
815	else	1448	else
816	#endif	1449	#endif
817	{	1450	{
818	ev_now = ev_time ();	1451	ev_rt_now = ev_time ();
819	now = ev_now;	1452	mn_now = ev_rt_now;
820	}	1453	}
821		1454
822	if (flags & EVLOOP_NONBLOCK || idlecnt)
823	block = 0.;
824	else
825	{
826	block = MAX_BLOCKTIME;	1455	block = MAX_BLOCKTIME;
827		1456
828	if (timercnt)	1457	if (timercnt)
829	{	1458	{
830	ev_tstamp to = timers [0]->at - now + method_fudge;	1459	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
831	if (block > to) block = to;	1460	if (block > to) block = to;
832	}	1461	}
833		1462
		1463	#if EV_PERIODIC_ENABLE
834	if (periodiccnt)	1464	if (periodiccnt)
835	{	1465	{
836	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1466	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
837	if (block > to) block = to;	1467	if (block > to) block = to;
838	}	1468	}
		1469	#endif
839		1470
840	if (block < 0.) block = 0.;	1471	if (expect_false (block < 0.)) block = 0.;
841	}	1472	}
842		1473
843	method_poll (block);	1474	++loop_count;
		1475	backend_poll (EV_A_ block);
		1476	}
844		1477
845	/* update ev_now, do magic */	1478	/* update ev_rt_now, do magic */
846	time_update ();	1479	time_update (EV_A);
847		1480
848	/* queue pending timers and reschedule them */	1481	/* queue pending timers and reschedule them */
849	timers_reify (); /* relative timers called last */	1482	timers_reify (EV_A); /* relative timers called last */
		1483	#if EV_PERIODIC_ENABLE
850	periodics_reify (); /* absolute timers called first */	1484	periodics_reify (EV_A); /* absolute timers called first */
		1485	#endif
851		1486
		1487	#if EV_IDLE_ENABLE
852	/* queue idle watchers unless io or timers are pending */	1488	/* queue idle watchers unless other events are pending */
853	if (!pendingcnt)	1489	idle_reify (EV_A);
854	queue_events ((W *)idles, idlecnt, EV_IDLE);	1490	#endif
855		1491
856	/* queue check watchers, to be executed first */	1492	/* queue check watchers, to be executed first */
857	if (checkcnt)	1493	if (expect_false (checkcnt))
858	queue_events ((W *)checks, checkcnt, EV_CHECK);	1494	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
859		1495
860	call_pending ();	1496	call_pending (EV_A);
861	}
862	while (!ev_loop_done);
863		1497
864	if (ev_loop_done != 2)	1498	}
		1499	while (expect_true (activecnt && !loop_done));
		1500
		1501	if (loop_done == EVUNLOOP_ONE)
		1502	loop_done = EVUNLOOP_CANCEL;
		1503	}
		1504
		1505	void
		1506	ev_unloop (EV_P_ int how)
		1507	{
865	ev_loop_done = 0;	1508	loop_done = how;
866	}	1509	}
867		1510
868	/*****************************************************************************/	1511	/*****************************************************************************/
869		1512
870	static void	1513	void inline_size
871	wlist_add (WL *head, WL elem)	1514	wlist_add (WL *head, WL elem)
872	{	1515	{
873	elem->next = *head;	1516	elem->next = *head;
874	*head = elem;	1517	*head = elem;
875	}	1518	}
876		1519
877	static void	1520	void inline_size
878	wlist_del (WL *head, WL elem)	1521	wlist_del (WL *head, WL elem)
879	{	1522	{
880	while (*head)	1523	while (*head)
881	{	1524	{
882	if (*head == elem)	1525	if (*head == elem)
…		…
887		1530
888	head = &(*head)->next;	1531	head = &(*head)->next;
889	}	1532	}
890	}	1533	}
891		1534
892	static void	1535	void inline_speed
893	ev_clear_pending (W w)	1536	clear_pending (EV_P_ W w)
894	{	1537	{
895	if (w->pending)	1538	if (w->pending)
896	{	1539	{
897	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1540	pendings [ABSPRI (w)][w->pending - 1].w = 0;
898	w->pending = 0;	1541	w->pending = 0;
899	}	1542	}
900	}	1543	}
901		1544
902	static void	1545	int
		1546	ev_clear_pending (EV_P_ void *w)
		1547	{
		1548	W w_ = (W)w;
		1549	int pending = w_->pending;
		1550
		1551	if (!pending)
		1552	return 0;
		1553
		1554	w_->pending = 0;
		1555	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1556	p->w = 0;
		1557
		1558	return p->events;
		1559	}
		1560
		1561	void inline_size
		1562	pri_adjust (EV_P_ W w)
		1563	{
		1564	int pri = w->priority;
		1565	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1566	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1567	w->priority = pri;
		1568	}
		1569
		1570	void inline_speed
903	ev_start (W w, int active)	1571	ev_start (EV_P_ W w, int active)
904	{	1572	{
905	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1573	pri_adjust (EV_A_ w);
906	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
907
908	w->active = active;	1574	w->active = active;
		1575	ev_ref (EV_A);
909	}	1576	}
910		1577
911	static void	1578	void inline_size
912	ev_stop (W w)	1579	ev_stop (EV_P_ W w)
913	{	1580	{
		1581	ev_unref (EV_A);
914	w->active = 0;	1582	w->active = 0;
915	}	1583	}
916		1584
917	/*****************************************************************************/	1585	/*****************************************************************************/
918		1586
919	void	1587	void
920	ev_io_start (struct ev_io *w)	1588	ev_io_start (EV_P_ ev_io *w)
921	{	1589	{
922	int fd = w->fd;	1590	int fd = w->fd;
923		1591
924	if (ev_is_active (w))	1592	if (expect_false (ev_is_active (w)))
925	return;	1593	return;
926		1594
927	assert (("ev_io_start called with negative fd", fd >= 0));	1595	assert (("ev_io_start called with negative fd", fd >= 0));
928		1596
929	ev_start ((W)w, 1);	1597	ev_start (EV_A_ (W)w, 1);
930	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1598	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
931	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1599	wlist_add ((WL *)&anfds[fd].head, (WL)w);
932		1600
933	fd_change (fd);	1601	fd_change (EV_A_ fd);
934	}	1602	}
935		1603
936	void	1604	void
937	ev_io_stop (struct ev_io *w)	1605	ev_io_stop (EV_P_ ev_io *w)
938	{	1606	{
939	ev_clear_pending ((W)w);	1607	clear_pending (EV_A_ (W)w);
940	if (!ev_is_active (w))	1608	if (expect_false (!ev_is_active (w)))
941	return;	1609	return;
		1610
		1611	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
942		1612
943	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1613	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
944	ev_stop ((W)w);	1614	ev_stop (EV_A_ (W)w);
945		1615
946	fd_change (w->fd);	1616	fd_change (EV_A_ w->fd);
947	}	1617	}
948		1618
949	void	1619	void
950	ev_timer_start (struct ev_timer *w)	1620	ev_timer_start (EV_P_ ev_timer *w)
951	{	1621	{
952	if (ev_is_active (w))	1622	if (expect_false (ev_is_active (w)))
953	return;	1623	return;
954		1624
955	w->at += now;	1625	((WT)w)->at += mn_now;
956		1626
957	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1627	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
958		1628
959	ev_start ((W)w, ++timercnt);	1629	ev_start (EV_A_ (W)w, ++timercnt);
960	array_needsize (timers, timermax, timercnt, );	1630	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
961	timers [timercnt - 1] = w;	1631	timers [timercnt - 1] = w;
962	upheap ((WT *)timers, timercnt - 1);	1632	upheap ((WT *)timers, timercnt - 1);
963	}
964		1633
		1634	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1635	}
		1636
965	void	1637	void
966	ev_timer_stop (struct ev_timer *w)	1638	ev_timer_stop (EV_P_ ev_timer *w)
967	{	1639	{
968	ev_clear_pending ((W)w);	1640	clear_pending (EV_A_ (W)w);
969	if (!ev_is_active (w))	1641	if (expect_false (!ev_is_active (w)))
970	return;	1642	return;
971		1643
972	if (w->active < timercnt--)	1644	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1645
		1646	{
		1647	int active = ((W)w)->active;
		1648
		1649	if (expect_true (--active < --timercnt))
973	{	1650	{
974	timers [w->active - 1] = timers [timercnt];	1651	timers [active] = timers [timercnt];
975	downheap ((WT *)timers, timercnt, w->active - 1);	1652	adjustheap ((WT *)timers, timercnt, active);
976	}	1653	}
		1654	}
977		1655
978	w->at = w->repeat;	1656	((WT)w)->at -= mn_now;
979		1657
980	ev_stop ((W)w);	1658	ev_stop (EV_A_ (W)w);
981	}	1659	}
982		1660
983	void	1661	void
984	ev_timer_again (struct ev_timer *w)	1662	ev_timer_again (EV_P_ ev_timer *w)
985	{	1663	{
986	if (ev_is_active (w))	1664	if (ev_is_active (w))
987	{	1665	{
988	if (w->repeat)	1666	if (w->repeat)
989	{	1667	{
990	w->at = now + w->repeat;	1668	((WT)w)->at = mn_now + w->repeat;
991	downheap ((WT *)timers, timercnt, w->active - 1);	1669	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
992	}	1670	}
993	else	1671	else
994	ev_timer_stop (w);	1672	ev_timer_stop (EV_A_ w);
995	}	1673	}
996	else if (w->repeat)	1674	else if (w->repeat)
		1675	{
		1676	w->at = w->repeat;
997	ev_timer_start (w);	1677	ev_timer_start (EV_A_ w);
		1678	}
998	}	1679	}
999		1680
		1681	#if EV_PERIODIC_ENABLE
1000	void	1682	void
1001	ev_periodic_start (struct ev_periodic *w)	1683	ev_periodic_start (EV_P_ ev_periodic *w)
1002	{	1684	{
1003	if (ev_is_active (w))	1685	if (expect_false (ev_is_active (w)))
1004	return;	1686	return;
1005		1687
		1688	if (w->reschedule_cb)
		1689	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1690	else if (w->interval)
		1691	{
1006	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1692	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1007
1008	/* this formula differs from the one in periodic_reify because we do not always round up */	1693	/* this formula differs from the one in periodic_reify because we do not always round up */
1009	if (w->interval)
1010	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1694	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1695	}
1011		1696
1012	ev_start ((W)w, ++periodiccnt);	1697	ev_start (EV_A_ (W)w, ++periodiccnt);
1013	array_needsize (periodics, periodicmax, periodiccnt, );	1698	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1014	periodics [periodiccnt - 1] = w;	1699	periodics [periodiccnt - 1] = w;
1015	upheap ((WT *)periodics, periodiccnt - 1);	1700	upheap ((WT *)periodics, periodiccnt - 1);
1016	}
1017		1701
		1702	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1703	}
		1704
1018	void	1705	void
1019	ev_periodic_stop (struct ev_periodic *w)	1706	ev_periodic_stop (EV_P_ ev_periodic *w)
1020	{	1707	{
1021	ev_clear_pending ((W)w);	1708	clear_pending (EV_A_ (W)w);
1022	if (!ev_is_active (w))	1709	if (expect_false (!ev_is_active (w)))
1023	return;	1710	return;
1024		1711
1025	if (w->active < periodiccnt--)	1712	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1713
		1714	{
		1715	int active = ((W)w)->active;
		1716
		1717	if (expect_true (--active < --periodiccnt))
1026	{	1718	{
1027	periodics [w->active - 1] = periodics [periodiccnt];	1719	periodics [active] = periodics [periodiccnt];
1028	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1720	adjustheap ((WT *)periodics, periodiccnt, active);
1029	}	1721	}
		1722	}
1030		1723
1031	ev_stop ((W)w);	1724	ev_stop (EV_A_ (W)w);
1032	}	1725	}
		1726
		1727	void
		1728	ev_periodic_again (EV_P_ ev_periodic *w)
		1729	{
		1730	/* TODO: use adjustheap and recalculation */
		1731	ev_periodic_stop (EV_A_ w);
		1732	ev_periodic_start (EV_A_ w);
		1733	}
		1734	#endif
1033		1735
1034	#ifndef SA_RESTART	1736	#ifndef SA_RESTART
1035	# define SA_RESTART 0	1737	# define SA_RESTART 0
1036	#endif	1738	#endif
1037		1739
1038	void	1740	void
1039	ev_signal_start (struct ev_signal *w)	1741	ev_signal_start (EV_P_ ev_signal *w)
1040	{	1742	{
		1743	#if EV_MULTIPLICITY
		1744	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1745	#endif
1041	if (ev_is_active (w))	1746	if (expect_false (ev_is_active (w)))
1042	return;	1747	return;
1043		1748
1044	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1749	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1045		1750
1046	ev_start ((W)w, 1);	1751	ev_start (EV_A_ (W)w, 1);
1047	array_needsize (signals, signalmax, w->signum, signals_init);	1752	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1048	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1753	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1049		1754
1050	if (!w->next)	1755	if (!((WL)w)->next)
1051	{	1756	{
		1757	#if _WIN32
		1758	signal (w->signum, sighandler);
		1759	#else
1052	struct sigaction sa;	1760	struct sigaction sa;
1053	sa.sa_handler = sighandler;	1761	sa.sa_handler = sighandler;
1054	sigfillset (&sa.sa_mask);	1762	sigfillset (&sa.sa_mask);
1055	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1763	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1056	sigaction (w->signum, &sa, 0);	1764	sigaction (w->signum, &sa, 0);
		1765	#endif
1057	}	1766	}
1058	}	1767	}
1059		1768
1060	void	1769	void
1061	ev_signal_stop (struct ev_signal *w)	1770	ev_signal_stop (EV_P_ ev_signal *w)
1062	{	1771	{
1063	ev_clear_pending ((W)w);	1772	clear_pending (EV_A_ (W)w);
1064	if (!ev_is_active (w))	1773	if (expect_false (!ev_is_active (w)))
1065	return;	1774	return;
1066		1775
1067	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1776	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1068	ev_stop ((W)w);	1777	ev_stop (EV_A_ (W)w);
1069		1778
1070	if (!signals [w->signum - 1].head)	1779	if (!signals [w->signum - 1].head)
1071	signal (w->signum, SIG_DFL);	1780	signal (w->signum, SIG_DFL);
1072	}	1781	}
1073		1782
1074	void	1783	void
1075	ev_idle_start (struct ev_idle *w)	1784	ev_child_start (EV_P_ ev_child *w)
1076	{	1785	{
		1786	#if EV_MULTIPLICITY
		1787	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1788	#endif
1077	if (ev_is_active (w))	1789	if (expect_false (ev_is_active (w)))
1078	return;	1790	return;
1079		1791
1080	ev_start ((W)w, ++idlecnt);	1792	ev_start (EV_A_ (W)w, 1);
1081	array_needsize (idles, idlemax, idlecnt, );	1793	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1082	idles [idlecnt - 1] = w;
1083	}	1794	}
1084		1795
1085	void	1796	void
1086	ev_idle_stop (struct ev_idle *w)	1797	ev_child_stop (EV_P_ ev_child *w)
1087	{	1798	{
1088	ev_clear_pending ((W)w);	1799	clear_pending (EV_A_ (W)w);
1089	if (ev_is_active (w))	1800	if (expect_false (!ev_is_active (w)))
1090	return;	1801	return;
1091		1802
1092	idles [w->active - 1] = idles [--idlecnt];	1803	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1093	ev_stop ((W)w);	1804	ev_stop (EV_A_ (W)w);
1094	}	1805	}
1095		1806
		1807	#if EV_STAT_ENABLE
		1808
		1809	# ifdef _WIN32
		1810	# undef lstat
		1811	# define lstat(a,b) _stati64 (a,b)
		1812	# endif
		1813
		1814	#define DEF_STAT_INTERVAL 5.0074891
		1815	#define MIN_STAT_INTERVAL 0.1074891
		1816
		1817	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1818
		1819	#if EV_USE_INOTIFY
		1820	# define EV_INOTIFY_BUFSIZE 8192
		1821
		1822	static void noinline
		1823	infy_add (EV_P_ ev_stat *w)
		1824	{
		1825	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
		1826
		1827	if (w->wd < 0)
		1828	{
		1829	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1830
		1831	/* monitor some parent directory for speedup hints */
		1832	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1833	{
		1834	char path [4096];
		1835	strcpy (path, w->path);
		1836
		1837	do
		1838	{
		1839	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1840	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1841
		1842	char *pend = strrchr (path, '/');
		1843
		1844	if (!pend)
		1845	break; /* whoops, no '/', complain to your admin */
		1846
		1847	*pend = 0;
		1848	w->wd = inotify_add_watch (fs_fd, path, mask);
		1849	}
		1850	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1851	}
		1852	}
		1853	else
		1854	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1855
		1856	if (w->wd >= 0)
		1857	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1858	}
		1859
		1860	static void noinline
		1861	infy_del (EV_P_ ev_stat *w)
		1862	{
		1863	int slot;
		1864	int wd = w->wd;
		1865
		1866	if (wd < 0)
		1867	return;
		1868
		1869	w->wd = -2;
		1870	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1871	wlist_del (&fs_hash [slot].head, (WL)w);
		1872
		1873	/* remove this watcher, if others are watching it, they will rearm */
		1874	inotify_rm_watch (fs_fd, wd);
		1875	}
		1876
		1877	static void noinline
		1878	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1879	{
		1880	if (slot < 0)
		1881	/* overflow, need to check for all hahs slots */
		1882	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1883	infy_wd (EV_A_ slot, wd, ev);
		1884	else
		1885	{
		1886	WL w_;
		1887
		1888	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1889	{
		1890	ev_stat *w = (ev_stat *)w_;
		1891	w_ = w_->next; /* lets us remove this watcher and all before it */
		1892
		1893	if (w->wd == wd || wd == -1)
		1894	{
		1895	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1896	{
		1897	w->wd = -1;
		1898	infy_add (EV_A_ w); /* re-add, no matter what */
		1899	}
		1900
		1901	stat_timer_cb (EV_A_ &w->timer, 0);
		1902	}
		1903	}
		1904	}
		1905	}
		1906
		1907	static void
		1908	infy_cb (EV_P_ ev_io *w, int revents)
		1909	{
		1910	char buf [EV_INOTIFY_BUFSIZE];
		1911	struct inotify_event *ev = (struct inotify_event *)buf;
		1912	int ofs;
		1913	int len = read (fs_fd, buf, sizeof (buf));
		1914
		1915	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1916	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1917	}
		1918
		1919	void inline_size
		1920	infy_init (EV_P)
		1921	{
		1922	if (fs_fd != -2)
		1923	return;
		1924
		1925	fs_fd = inotify_init ();
		1926
		1927	if (fs_fd >= 0)
		1928	{
		1929	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1930	ev_set_priority (&fs_w, EV_MAXPRI);
		1931	ev_io_start (EV_A_ &fs_w);
		1932	}
		1933	}
		1934
		1935	void inline_size
		1936	infy_fork (EV_P)
		1937	{
		1938	int slot;
		1939
		1940	if (fs_fd < 0)
		1941	return;
		1942
		1943	close (fs_fd);
		1944	fs_fd = inotify_init ();
		1945
		1946	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1947	{
		1948	WL w_ = fs_hash [slot].head;
		1949	fs_hash [slot].head = 0;
		1950
		1951	while (w_)
		1952	{
		1953	ev_stat *w = (ev_stat *)w_;
		1954	w_ = w_->next; /* lets us add this watcher */
		1955
		1956	w->wd = -1;
		1957
		1958	if (fs_fd >= 0)
		1959	infy_add (EV_A_ w); /* re-add, no matter what */
		1960	else
		1961	ev_timer_start (EV_A_ &w->timer);
		1962	}
		1963
		1964	}
		1965	}
		1966
		1967	#endif
		1968
1096	void	1969	void
		1970	ev_stat_stat (EV_P_ ev_stat *w)
		1971	{
		1972	if (lstat (w->path, &w->attr) < 0)
		1973	w->attr.st_nlink = 0;
		1974	else if (!w->attr.st_nlink)
		1975	w->attr.st_nlink = 1;
		1976	}
		1977
		1978	static void noinline
		1979	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1980	{
		1981	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1982
		1983	/* we copy this here each the time so that */
		1984	/* prev has the old value when the callback gets invoked */
		1985	w->prev = w->attr;
		1986	ev_stat_stat (EV_A_ w);
		1987
		1988	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1989	if (
		1990	w->prev.st_dev != w->attr.st_dev
		1991	|| w->prev.st_ino != w->attr.st_ino
		1992	|| w->prev.st_mode != w->attr.st_mode
		1993	|| w->prev.st_nlink != w->attr.st_nlink
		1994	|| w->prev.st_uid != w->attr.st_uid
		1995	|| w->prev.st_gid != w->attr.st_gid
		1996	|| w->prev.st_rdev != w->attr.st_rdev
		1997	|| w->prev.st_size != w->attr.st_size
		1998	|| w->prev.st_atime != w->attr.st_atime
		1999	|| w->prev.st_mtime != w->attr.st_mtime
		2000	|| w->prev.st_ctime != w->attr.st_ctime
		2001	) {
		2002	#if EV_USE_INOTIFY
		2003	infy_del (EV_A_ w);
		2004	infy_add (EV_A_ w);
		2005	ev_stat_stat (EV_A_ w); /* avoid race... */
		2006	#endif
		2007
		2008	ev_feed_event (EV_A_ w, EV_STAT);
		2009	}
		2010	}
		2011
		2012	void
		2013	ev_stat_start (EV_P_ ev_stat *w)
		2014	{
		2015	if (expect_false (ev_is_active (w)))
		2016	return;
		2017
		2018	/* since we use memcmp, we need to clear any padding data etc. */
		2019	memset (&w->prev, 0, sizeof (ev_statdata));
		2020	memset (&w->attr, 0, sizeof (ev_statdata));
		2021
		2022	ev_stat_stat (EV_A_ w);
		2023
		2024	if (w->interval < MIN_STAT_INTERVAL)
		2025	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2026
		2027	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2028	ev_set_priority (&w->timer, ev_priority (w));
		2029
		2030	#if EV_USE_INOTIFY
		2031	infy_init (EV_A);
		2032
		2033	if (fs_fd >= 0)
		2034	infy_add (EV_A_ w);
		2035	else
		2036	#endif
		2037	ev_timer_start (EV_A_ &w->timer);
		2038
		2039	ev_start (EV_A_ (W)w, 1);
		2040	}
		2041
		2042	void
		2043	ev_stat_stop (EV_P_ ev_stat *w)
		2044	{
		2045	clear_pending (EV_A_ (W)w);
		2046	if (expect_false (!ev_is_active (w)))
		2047	return;
		2048
		2049	#if EV_USE_INOTIFY
		2050	infy_del (EV_A_ w);
		2051	#endif
		2052	ev_timer_stop (EV_A_ &w->timer);
		2053
		2054	ev_stop (EV_A_ (W)w);
		2055	}
		2056	#endif
		2057
		2058	#if EV_IDLE_ENABLE
		2059	void
		2060	ev_idle_start (EV_P_ ev_idle *w)
		2061	{
		2062	if (expect_false (ev_is_active (w)))
		2063	return;
		2064
		2065	pri_adjust (EV_A_ (W)w);
		2066
		2067	{
		2068	int active = ++idlecnt [ABSPRI (w)];
		2069
		2070	++idleall;
		2071	ev_start (EV_A_ (W)w, active);
		2072
		2073	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2074	idles [ABSPRI (w)][active - 1] = w;
		2075	}
		2076	}
		2077
		2078	void
		2079	ev_idle_stop (EV_P_ ev_idle *w)
		2080	{
		2081	clear_pending (EV_A_ (W)w);
		2082	if (expect_false (!ev_is_active (w)))
		2083	return;
		2084
		2085	{
		2086	int active = ((W)w)->active;
		2087
		2088	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2089	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2090
		2091	ev_stop (EV_A_ (W)w);
		2092	--idleall;
		2093	}
		2094	}
		2095	#endif
		2096
		2097	void
1097	ev_prepare_start (struct ev_prepare *w)	2098	ev_prepare_start (EV_P_ ev_prepare *w)
1098	{	2099	{
1099	if (ev_is_active (w))	2100	if (expect_false (ev_is_active (w)))
1100	return;	2101	return;
1101		2102
1102	ev_start ((W)w, ++preparecnt);	2103	ev_start (EV_A_ (W)w, ++preparecnt);
1103	array_needsize (prepares, preparemax, preparecnt, );	2104	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1104	prepares [preparecnt - 1] = w;	2105	prepares [preparecnt - 1] = w;
1105	}	2106	}
1106		2107
1107	void	2108	void
1108	ev_prepare_stop (struct ev_prepare *w)	2109	ev_prepare_stop (EV_P_ ev_prepare *w)
1109	{	2110	{
1110	ev_clear_pending ((W)w);	2111	clear_pending (EV_A_ (W)w);
1111	if (ev_is_active (w))	2112	if (expect_false (!ev_is_active (w)))
1112	return;	2113	return;
1113		2114
		2115	{
		2116	int active = ((W)w)->active;
1114	prepares [w->active - 1] = prepares [--preparecnt];	2117	prepares [active - 1] = prepares [--preparecnt];
		2118	((W)prepares [active - 1])->active = active;
		2119	}
		2120
1115	ev_stop ((W)w);	2121	ev_stop (EV_A_ (W)w);
1116	}	2122	}
1117		2123
1118	void	2124	void
1119	ev_check_start (struct ev_check *w)	2125	ev_check_start (EV_P_ ev_check *w)
1120	{	2126	{
1121	if (ev_is_active (w))	2127	if (expect_false (ev_is_active (w)))
1122	return;	2128	return;
1123		2129
1124	ev_start ((W)w, ++checkcnt);	2130	ev_start (EV_A_ (W)w, ++checkcnt);
1125	array_needsize (checks, checkmax, checkcnt, );	2131	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1126	checks [checkcnt - 1] = w;	2132	checks [checkcnt - 1] = w;
1127	}	2133	}
1128		2134
1129	void	2135	void
1130	ev_check_stop (struct ev_check *w)	2136	ev_check_stop (EV_P_ ev_check *w)
1131	{	2137	{
1132	ev_clear_pending ((W)w);	2138	clear_pending (EV_A_ (W)w);
1133	if (ev_is_active (w))	2139	if (expect_false (!ev_is_active (w)))
1134	return;	2140	return;
1135		2141
		2142	{
		2143	int active = ((W)w)->active;
1136	checks [w->active - 1] = checks [--checkcnt];	2144	checks [active - 1] = checks [--checkcnt];
		2145	((W)checks [active - 1])->active = active;
		2146	}
		2147
1137	ev_stop ((W)w);	2148	ev_stop (EV_A_ (W)w);
1138	}	2149	}
1139		2150
1140	void	2151	#if EV_EMBED_ENABLE
1141	ev_child_start (struct ev_child *w)	2152	void noinline
		2153	ev_embed_sweep (EV_P_ ev_embed *w)
1142	{	2154	{
		2155	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2156	}
		2157
		2158	static void
		2159	embed_cb (EV_P_ ev_io *io, int revents)
		2160	{
		2161	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2162
1143	if (ev_is_active (w))	2163	if (ev_cb (w))
1144	return;	2164	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2165	else
		2166	ev_embed_sweep (loop, w);
		2167	}
1145		2168
		2169	void
		2170	ev_embed_start (EV_P_ ev_embed *w)
		2171	{
		2172	if (expect_false (ev_is_active (w)))
		2173	return;
		2174
		2175	{
		2176	struct ev_loop *loop = w->loop;
		2177	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2178	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2179	}
		2180
		2181	ev_set_priority (&w->io, ev_priority (w));
		2182	ev_io_start (EV_A_ &w->io);
		2183
1146	ev_start ((W)w, 1);	2184	ev_start (EV_A_ (W)w, 1);
1147	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1148	}	2185	}
1149		2186
1150	void	2187	void
1151	ev_child_stop (struct ev_child *w)	2188	ev_embed_stop (EV_P_ ev_embed *w)
1152	{	2189	{
1153	ev_clear_pending ((W)w);	2190	clear_pending (EV_A_ (W)w);
1154	if (ev_is_active (w))	2191	if (expect_false (!ev_is_active (w)))
1155	return;	2192	return;
1156		2193
1157	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2194	ev_io_stop (EV_A_ &w->io);
		2195
1158	ev_stop ((W)w);	2196	ev_stop (EV_A_ (W)w);
1159	}	2197	}
		2198	#endif
		2199
		2200	#if EV_FORK_ENABLE
		2201	void
		2202	ev_fork_start (EV_P_ ev_fork *w)
		2203	{
		2204	if (expect_false (ev_is_active (w)))
		2205	return;
		2206
		2207	ev_start (EV_A_ (W)w, ++forkcnt);
		2208	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2209	forks [forkcnt - 1] = w;
		2210	}
		2211
		2212	void
		2213	ev_fork_stop (EV_P_ ev_fork *w)
		2214	{
		2215	clear_pending (EV_A_ (W)w);
		2216	if (expect_false (!ev_is_active (w)))
		2217	return;
		2218
		2219	{
		2220	int active = ((W)w)->active;
		2221	forks [active - 1] = forks [--forkcnt];
		2222	((W)forks [active - 1])->active = active;
		2223	}
		2224
		2225	ev_stop (EV_A_ (W)w);
		2226	}
		2227	#endif
1160		2228
1161	/*****************************************************************************/	2229	/*****************************************************************************/
1162		2230
1163	struct ev_once	2231	struct ev_once
1164	{	2232	{
1165	struct ev_io io;	2233	ev_io io;
1166	struct ev_timer to;	2234	ev_timer to;
1167	void (*cb)(int revents, void *arg);	2235	void (*cb)(int revents, void *arg);
1168	void *arg;	2236	void *arg;
1169	};	2237	};
1170		2238
1171	static void	2239	static void
1172	once_cb (struct ev_once *once, int revents)	2240	once_cb (EV_P_ struct ev_once *once, int revents)
1173	{	2241	{
1174	void (*cb)(int revents, void *arg) = once->cb;	2242	void (*cb)(int revents, void *arg) = once->cb;
1175	void *arg = once->arg;	2243	void *arg = once->arg;
1176		2244
1177	ev_io_stop (&once->io);	2245	ev_io_stop (EV_A_ &once->io);
1178	ev_timer_stop (&once->to);	2246	ev_timer_stop (EV_A_ &once->to);
1179	free (once);	2247	ev_free (once);
1180		2248
1181	cb (revents, arg);	2249	cb (revents, arg);
1182	}	2250	}
1183		2251
1184	static void	2252	static void
1185	once_cb_io (struct ev_io *w, int revents)	2253	once_cb_io (EV_P_ ev_io *w, int revents)
1186	{	2254	{
1187	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2255	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1188	}	2256	}
1189		2257
1190	static void	2258	static void
1191	once_cb_to (struct ev_timer *w, int revents)	2259	once_cb_to (EV_P_ ev_timer *w, int revents)
1192	{	2260	{
1193	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2261	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1194	}	2262	}
1195		2263
1196	void	2264	void
1197	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2265	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1198	{	2266	{
1199	struct ev_once *once = malloc (sizeof (struct ev_once));	2267	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1200		2268
1201	if (!once)	2269	if (expect_false (!once))
		2270	{
1202	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2271	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1203	else	2272	return;
1204	{	2273	}
		2274
1205	once->cb = cb;	2275	once->cb = cb;
1206	once->arg = arg;	2276	once->arg = arg;
1207		2277
1208	ev_watcher_init (&once->io, once_cb_io);	2278	ev_init (&once->io, once_cb_io);
1209	if (fd >= 0)	2279	if (fd >= 0)
1210	{	2280	{
1211	ev_io_set (&once->io, fd, events);	2281	ev_io_set (&once->io, fd, events);
1212	ev_io_start (&once->io);	2282	ev_io_start (EV_A_ &once->io);
1213	}	2283	}
1214		2284
1215	ev_watcher_init (&once->to, once_cb_to);	2285	ev_init (&once->to, once_cb_to);
1216	if (timeout >= 0.)	2286	if (timeout >= 0.)
1217	{	2287	{
1218	ev_timer_set (&once->to, timeout, 0.);	2288	ev_timer_set (&once->to, timeout, 0.);
1219	ev_timer_start (&once->to);	2289	ev_timer_start (EV_A_ &once->to);
1220	}
1221	}
1222	}
1223
1224	/*****************************************************************************/
1225
1226	#if 0
1227
1228	struct ev_io wio;
1229
1230	static void
1231	sin_cb (struct ev_io *w, int revents)
1232	{
1233	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1234	}
1235
1236	static void
1237	ocb (struct ev_timer *w, int revents)
1238	{
1239	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1240	ev_timer_stop (w);
1241	ev_timer_start (w);
1242	}
1243
1244	static void
1245	scb (struct ev_signal *w, int revents)
1246	{
1247	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1248	ev_io_stop (&wio);
1249	ev_io_start (&wio);
1250	}
1251
1252	static void
1253	gcb (struct ev_signal *w, int revents)
1254	{
1255	fprintf (stderr, "generic %x\n", revents);
1256
1257	}
1258
1259	int main (void)
1260	{
1261	ev_init (0);
1262
1263	ev_io_init (&wio, sin_cb, 0, EV_READ);
1264	ev_io_start (&wio);
1265
1266	struct ev_timer t[10000];
1267
1268	#if 0
1269	int i;
1270	for (i = 0; i < 10000; ++i)
1271	{	2290	}
1272	struct ev_timer *w = t + i;
1273	ev_watcher_init (w, ocb, i);
1274	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1275	ev_timer_start (w);
1276	if (drand48 () < 0.5)
1277	ev_timer_stop (w);
1278	}
1279	#endif
1280
1281	struct ev_timer t1;
1282	ev_timer_init (&t1, ocb, 5, 10);
1283	ev_timer_start (&t1);
1284
1285	struct ev_signal sig;
1286	ev_signal_init (&sig, scb, SIGQUIT);
1287	ev_signal_start (&sig);
1288
1289	struct ev_check cw;
1290	ev_check_init (&cw, gcb);
1291	ev_check_start (&cw);
1292
1293	struct ev_idle iw;
1294	ev_idle_init (&iw, gcb);
1295	ev_idle_start (&iw);
1296
1297	ev_loop (0);
1298
1299	return 0;
1300	}	2291	}
1301		2292
		2293	#ifdef __cplusplus
		2294	}
1302	#endif	2295	#endif
1303		2296
1304
1305
1306

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